Refactor code structure for improved readability and maintainability

- Add helper text indicating users can paste demo video links
- Update placeholder to mention YouTube, Loom, etc.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

apps/backoffice/src/app/(protected)/hackathon-teams/_components/modal-team-detail-new.tsx

@@ -1,822 +0,0 @@
-import { FC, useState, useEffect, useMemo, useRef } from 'react';
-import { Button } from '@imphnen-frontend-service/ui/atoms';
-import { cn } from '@imphnen-frontend-service/utils';
-import TeamBannerPlaceholder from './team-banner-placeholder';
-import { CityFilterSelect } from '../../../../components/city-filter-select';
-import {
-  TeamOutlined,
-  CalendarOutlined,
-  SaveOutlined,
-  CloseOutlined,
-  ExclamationOutlined,
-  UserOutlined,
-  DeleteOutlined,
-  EyeOutlined,
-  EyeInvisibleOutlined,
-  CrownOutlined,
-  CheckCircleOutlined,
-  ClockCircleOutlined,
-  CloseCircleOutlined,
-  CameraOutlined,
-  UploadOutlined,
-} from '@ant-design/icons';
-
-interface TeamMember {
-  id: string;
-  joined_at: string;
-  role: 'leader' | 'member';
-  status: 'pending' | 'accepted' | 'rejected';
-  team_id: string;
-  user: {
-    avatar?: string;
-    bio?: string;
-    created_at: string;
-    email: string;
-    fullname: string;
-    id: string;
-    is_active: boolean;
-    location: string;
-    phone_number?: string;
-    skills: string[];
-    updated_at: string;
-  };
-  user_id: string;
-}
-
-interface TeamType {
-  id: string;
-  name: string;
-  description?: string;
-  city: string;
-  banner?: string;
-  logo?: string;
-  visibility: 'public' | 'private';
-  member_count: number;
-  has_submission: boolean;
-  created_at: string;
-  updated_at: string;
-  leader_id: string;
-  members: TeamMember[];
-}
-
-interface ModalProps {
-  isOpen: boolean;
-  onClose: () => void;
-  team: TeamType | null;
-}
-
-const ModalTeamDetail: FC<ModalProps> = ({ isOpen, onClose, team }) => {
-  const [formData, setFormData] = useState<TeamType | null>(null);
-  const [showDeleteConfirm, setShowDeleteConfirm] = useState(false);
-  const [activeTab, setActiveTab] = useState<'details' | 'members'>('details');
-  const [showLogoMenu, setShowLogoMenu] = useState(false);
-  const logoInputRef = useRef<HTMLInputElement>(null);
-  const bannerInputRef = useRef<HTMLInputElement>(null);
-
-  // Initialize form data when modal opens
-  useEffect(() => {
-    if (isOpen) {
-      if (team) {
-        // Edit existing team
-        setFormData({ ...team });
-      } else {
-        // Create new team
-        setFormData({
-          id: '', // Will be generated by backend
-          name: '',
-          description: '',
-          city: '',
-          banner: undefined,
-          logo: undefined,
-          visibility: 'public',
-          member_count: 1,
-          has_submission: false,
-          created_at: new Date().toISOString(),
-          updated_at: new Date().toISOString(),
-          leader_id: '',
-          members: [],
-        });
-      }
-    }
-  }, [isOpen, team]);
-
-  // Check if form has changes
-  const hasChanges = useMemo(() => {
-    if (!formData) return false;
-    if (!team) return true; // New team always has changes
-    return (
-      formData.name !== team.name ||
-      formData.description !== team.description ||
-      formData.city !== team.city ||
-      formData.visibility !== team.visibility ||
-      formData.logo !== team.logo ||
-      formData.banner !== team.banner
-    );
-  }, [formData, team]);
-
-  // Check if required fields are filled
-  const isFormValid = useMemo(() => {
-    if (!formData) return false;
-    return formData.name.trim() !== '' && formData.city.trim() !== '';
-  }, [formData]);
-
-  const canSave = hasChanges && isFormValid;
-
-  // Get leader and other members
-  const leader = team?.members.find((m) => m.role === 'leader');
-  const acceptedMembers =
-    team?.members.filter((m) => m.status === 'accepted') || [];
-  const pendingMembers =
-    team?.members.filter((m) => m.status === 'pending') || [];
-
-  if (!isOpen || !formData) return null;
-
-  const handleInputChange = (
-    field: keyof TeamType,
-    value: string | boolean | 'public' | 'private' | undefined
-  ) => {
-    setFormData((prev) => (prev ? { ...prev, [field]: value } : null));
-  };
-
-  const handleSave = () => {
-    if (!formData) return;
-
-    console.log('Saving team:', formData);
-    onClose();
-  };
-
-  const handleDelete = () => {
-    if (!team) return;
-
-    console.log('Deleting team:', team.id);
-    setShowDeleteConfirm(false);
-    onClose();
-  };
-
-  const handleLogoUpload = (event: React.ChangeEvent<HTMLInputElement>) => {
-    const file = event.target.files?.[0];
-    if (file) {
-      if (!file.type.startsWith('image/')) {
-        alert('Please select an image file');
-        return;
-      }
-      if (file.size > 5 * 1024 * 1024) {
-        alert('Image size must be less than 5MB');
-        return;
-      }
-      const reader = new FileReader();
-      reader.onload = (e) => {
-        const logoUrl = e.target?.result as string;
-        handleInputChange('logo', logoUrl);
-        setShowLogoMenu(false);
-      };
-      reader.readAsDataURL(file);
-    }
-  };
-
-  const handleBannerUpload = (event: React.ChangeEvent<HTMLInputElement>) => {
-    const file = event.target.files?.[0];
-    if (file) {
-      if (!file.type.startsWith('image/')) {
-        alert('Please select an image file');
-        return;
-      }
-      if (file.size > 5 * 1024 * 1024) {
-        alert('Image size must be less than 5MB');
-        return;
-      }
-      const reader = new FileReader();
-      reader.onload = (e) => {
-        const bannerUrl = e.target?.result as string;
-        handleInputChange('banner', bannerUrl);
-      };
-      reader.readAsDataURL(file);
-    }
-  };
-
-  const handleRemoveLogo = () => {
-    handleInputChange('logo', undefined);
-    setShowLogoMenu(false);
-  };
-
-  const handleRemoveBanner = () => {
-    handleInputChange('banner', undefined);
-  };
-
-  const triggerLogoUpload = () => {
-    logoInputRef.current?.click();
-  };
-
-  return (
-    <div className="fixed inset-0 bg-black/50 flex items-center justify-center z-50 p-4">
-      <div className="bg-white rounded-lg shadow-xl w-full max-w-4xl max-h-[90vh] overflow-y-auto">
-        {/* Header */}
-        <div className="flex items-center justify-between p-6 border-b border-neutral-200">
-          <div className="flex items-center gap-3">
-            <div className="w-10 h-10 rounded-full bg-primary-100 flex items-center justify-center">
-              <TeamOutlined className="text-primary-600 text-lg" />
-            </div>
-            <div>
-              <h2 className="text-xl font-semibold text-neutral-900">
-                {team ? 'Team Details' : 'Create New Team'}
-              </h2>
-              <p className="text-sm text-neutral-500">
-                {team
-                  ? 'View and manage team information'
-                  : 'Add a new team to the hackathon'}
-              </p>
-            </div>
-          </div>
-          <button
-            className="p-2 hover:bg-neutral-100 rounded-lg transition-colors cursor-pointer"
-            onClick={() => {
-              setShowLogoMenu(false);
-              onClose();
-            }}
-          >
-            <CloseOutlined className="text-neutral-400 text-lg" />
-          </button>
-        </div>
-
-        {/* Content */}
-        <div className="p-6 space-y-6" onClick={() => setShowLogoMenu(false)}>
-          {/* Hidden File Inputs */}
-          <input
-            type="file"
-            ref={logoInputRef}
-            onChange={handleLogoUpload}
-            accept="image/*"
-            className="hidden"
-          />
-          <input
-            type="file"
-            ref={bannerInputRef}
-            onChange={handleBannerUpload}
-            accept="image/*"
-            className="hidden"
-          />
-
-          {/* Interactive Banner Section */}
-          <div className="space-y-2">
-            <label className="block text-sm font-medium text-neutral-700">
-              Team Banner
-              <span className="text-xs text-neutral-500 ml-2">
-                (3:1 aspect ratio recommended)
-              </span>
-            </label>
-            <div className="relative group">
-              <TeamBannerPlaceholder
-                banner={formData.banner}
-                teamName={formData.name || 'Team Name'}
-                className="rounded-lg border border-neutral-200 transition-all group-hover:border-primary-300"
-              />
-              {/* Banner Action Buttons */}
-              <div className="absolute inset-0 bg-black/40 rounded-lg opacity-0 group-hover:opacity-100 transition-opacity flex items-center justify-center gap-3">
-                <Button
-                  variant="primary"
-                  size="sm"
-                  onClick={(e) => {
-                    e.stopPropagation();
-                    bannerInputRef.current?.click();
-                  }}
-                  className="bg-white/90 hover:bg-white text-neutral-700 border-transparent shadow-sm gap-2"
-                >
-                  <UploadOutlined className="text-sm" />
-                  {formData.banner ? 'Change Banner' : 'Add Banner'}
-                </Button>
-                {formData.banner && (
-                  <Button
-                    variant="secondary"
-                    size="sm"
-                    onClick={(e) => {
-                      e.stopPropagation();
-                      handleRemoveBanner();
-                    }}
-                    className="bg-white/90 hover:bg-white text-red-600 border-transparent shadow-sm hover:text-red-700 gap-2"
-                  >
-                    <DeleteOutlined className="text-sm" />
-                    Delete Banner
-                  </Button>
-                )}
-              </div>
-            </div>
-          </div>
-
-          {/* Team Logo & Name Row */}
-          <div className="grid grid-cols-12 gap-4 items-start">
-            {/* Interactive Team Logo */}
-            <div className="col-span-2">
-              <label className="block text-sm font-medium text-neutral-700 mb-2">
-                Logo
-              </label>
-              <div className="relative group">
-                <div className="w-24 h-24 rounded-full bg-neutral-100 flex items-center justify-center overflow-hidden border border-neutral-200 group-hover:border-primary-300 transition-colors">
-                  {formData.logo ? (
-                    <img
-                      src={formData.logo}
-                      alt={formData.name || 'Team Logo'}
-                      className="w-full h-full object-cover"
-                    />
-                  ) : (
-                    <TeamOutlined className="text-neutral-400 text-xl" />
-                  )}
-                </div>
-                {/* Logo Hover Overlay - Full circle */}
-                <button
-                  onClick={(e) => {
-                    e.stopPropagation();
-                    setShowLogoMenu(!showLogoMenu);
-                  }}
-                  className="absolute inset-0 bg-neutral-300/80 cursor-pointer rounded-full opacity-0 group-hover:opacity-100 transition-opacity flex items-center justify-center w-24 h-24"
-                >
-                  <CameraOutlined className="text-white text-lg" />
-                </button>
-
-                {/* Logo Menu Dropdown */}
-                {showLogoMenu && (
-                  <div className="absolute top-full left-0 mt-2 bg-white rounded-lg shadow-lg border border-neutral-200 py-2 min-w-[140px] z-10">
-                    <button
-                      onClick={(e) => {
-                        e.stopPropagation();
-                        triggerLogoUpload();
-                      }}
-                      className="w-full px-4 py-2 text-left text-sm text-neutral-700 hover:bg-neutral-50 flex items-center gap-2 cursor-pointer"
-                    >
-                      <UploadOutlined className="text-sm" />
-                      {formData.logo ? 'Change Logo' : 'Upload Logo'}
-                    </button>
-                    {formData.logo && (
-                      <button
-                        onClick={(e) => {
-                          e.stopPropagation();
-                          handleRemoveLogo();
-                        }}
-                        className="w-full px-4 py-2 text-left text-sm text-red-600 hover:bg-red-50 flex items-center gap-2 cursor-pointer"
-                      >
-                        <DeleteOutlined className="text-sm" />
-                        Remove Logo
-                      </button>
-                    )}
-                  </div>
-                )}
-              </div>
-            </div>
-
-            {/* Team Name */}
-            <div className="col-span-10 space-y-2">
-              <label className="block text-sm font-medium text-neutral-700">
-                Team Name <span className="text-danger-500">*</span>
-              </label>
-              <input
-                type="text"
-                className="w-full border border-neutral-200 rounded-lg px-3 py-2 text-sm focus:border-primary-500 focus:outline-none"
-                placeholder="Enter team name"
-                value={formData.name}
-                onChange={(e) => handleInputChange('name', e.target.value)}
-              />
-              <p className="text-xs text-neutral-500">
-                Click logo to upload or change team logo (circular format)
-              </p>
-            </div>
-          </div>
-
-          {/* Team Description */}
-          <div className="space-y-2">
-            <label className="block text-sm font-medium text-neutral-700">
-              Description
-            </label>
-            <textarea
-              className="w-full border border-neutral-200 rounded-lg px-3 py-2 text-sm focus:border-primary-500 focus:outline-none resize-none"
-              placeholder="Enter team description (optional)"
-              rows={3}
-              value={formData.description || ''}
-              onChange={(e) => handleInputChange('description', e.target.value)}
-            />
-          </div>
-
-          {/* City */}
-          <div className="space-y-2">
-            <label className="block text-sm font-medium text-neutral-700">
-              City <span className="text-danger-500">*</span>
-            </label>
-            <CityFilterSelect
-              value={formData.city || 'all'}
-              onChange={(city) =>
-                handleInputChange('city', city === 'all' ? '' : city)
-              }
-              className="w-full"
-              placeholder="Search cities..."
-              allOptionLabel="Select a city"
-              filterIcon={false}
-            />
-          </div>
-
-          {/* Visibility */}
-          <div className="space-y-2">
-            <label className="block text-sm font-medium text-neutral-700">
-              Team Visibility
-            </label>
-            <div className="flex gap-4">
-              <label className="flex items-center gap-2 cursor-pointer">
-                <input
-                  type="radio"
-                  name="visibility"
-                  value="public"
-                  checked={formData.visibility === 'public'}
-                  onChange={(e) =>
-                    handleInputChange('visibility', e.target.value as 'public')
-                  }
-                  className="text-primary-600"
-                />
-                <EyeOutlined className="text-info-600" />
-                <span className="text-sm">Public</span>
-              </label>
-              <label className="flex items-center gap-2 cursor-pointer">
-                <input
-                  type="radio"
-                  name="visibility"
-                  value="private"
-                  checked={formData.visibility === 'private'}
-                  onChange={(e) =>
-                    handleInputChange('visibility', e.target.value as 'private')
-                  }
-                  className="text-primary-600"
-                />
-                <EyeInvisibleOutlined className="text-neutral-600" />
-                <span className="text-sm">Private</span>
-              </label>
-            </div>
-          </div>
-
-          {/* Team Information (Read-only for existing teams) */}
-          {team && (
-            <div className="grid grid-cols-2 gap-4">
-              <div className="space-y-2">
-                <label className="block text-sm font-medium text-neutral-700">
-                  Members
-                </label>
-                <div className="flex items-center gap-2 p-3 bg-neutral-50 rounded-lg">
-                  <UserOutlined className="text-neutral-500" />
-                  <span className="text-sm text-neutral-700">
-                    {team.member_count} member
-                    {team.member_count !== 1 ? 's' : ''}
-                  </span>
-                </div>
-              </div>
-
-              <div className="space-y-2">
-                <label className="block text-sm font-medium text-neutral-700">
-                  Submission Status
-                </label>
-                <div className="flex items-center gap-2 p-3 bg-neutral-50 rounded-lg">
-                  <div
-                    className={cn(
-                      'w-2 h-2 rounded-full',
-                      team.has_submission ? 'bg-success-500' : 'bg-danger-500'
-                    )}
-                  />
-                  <span
-                    className={cn(
-                      'text-sm font-medium',
-                      team.has_submission
-                        ? 'text-success-700'
-                        : 'text-danger-700'
-                    )}
-                  >
-                    {team.has_submission ? 'Submitted' : 'Not Submitted'}
-                  </span>
-                </div>
-              </div>
-            </div>
-          )}
-
-          {/* Tabs for Details and Members */}
-          {team && (
-            <div>
-              <div className="flex border-b border-neutral-200">
-                <button
-                  className={cn(
-                    'px-4 py-2 text-sm font-medium border-b-2 transition-colors cursor-pointer',
-                    activeTab === 'details'
-                      ? 'border-primary-500 text-primary-600'
-                      : 'border-transparent text-neutral-500 hover:text-neutral-700'
-                  )}
-                  onClick={() => setActiveTab('details')}
-                >
-                  Team Details
-                </button>
-                <button
-                  className={cn(
-                    'px-4 py-2 text-sm font-medium border-b-2 transition-colors cursor-pointer',
-                    activeTab === 'members'
-                      ? 'border-primary-500 text-primary-600'
-                      : 'border-transparent text-neutral-500 hover:text-neutral-700'
-                  )}
-                  onClick={() => setActiveTab('members')}
-                >
-                  Members ({team.member_count})
-                </button>
-              </div>
-
-              <div className="pt-4">
-                {activeTab === 'details' && (
-                  <div className="space-y-4">
-                    {/* Leader Information */}
-                    {leader && (
-                      <div className="space-y-2">
-                        <label className="block text-sm font-medium text-neutral-700">
-                          Team Leader
-                        </label>
-                        <div className="p-3 bg-neutral-50 rounded-lg">
-                          <div className="flex items-center gap-3">
-                            <div className="w-10 h-10 rounded-full bg-neutral-200 flex items-center justify-center overflow-hidden">
-                              {leader.user.avatar ? (
-                                <img
-                                  src={leader.user.avatar}
-                                  alt={leader.user.fullname}
-                                  className="w-full h-full object-cover"
-                                />
-                              ) : (
-                                <CrownOutlined className="text-yellow-600 text-sm" />
-                              )}
-                            </div>
-                            <div>
-                              <p className="text-sm font-medium text-neutral-900">
-                                {leader.user.fullname}
-                              </p>
-                              <p className="text-xs text-neutral-500">
-                                {leader.user.email}
-                              </p>
-                            </div>
-                          </div>
-                        </div>
-                      </div>
-                    )}
-
-                    {/* Timestamps */}
-                    <div className="grid grid-cols-2 gap-4">
-                      <div className="space-y-2">
-                        <label className="block text-sm font-medium text-neutral-700">
-                          Created
-                        </label>
-                        <div className="flex items-center gap-2 p-3 bg-neutral-50 rounded-lg">
-                          <CalendarOutlined className="text-neutral-500" />
-                          <span className="text-sm text-neutral-700">
-                            {new Date(team.created_at).toLocaleDateString(
-                              'en-US',
-                              {
-                                year: 'numeric',
-                                month: 'long',
-                                day: 'numeric',
-                                hour: '2-digit',
-                                minute: '2-digit',
-                              }
-                            )}
-                          </span>
-                        </div>
-                      </div>
-
-                      <div className="space-y-2">
-                        <label className="block text-sm font-medium text-neutral-700">
-                          Last Updated
-                        </label>
-                        <div className="flex items-center gap-2 p-3 bg-neutral-50 rounded-lg">
-                          <CalendarOutlined className="text-neutral-500" />
-                          <span className="text-sm text-neutral-700">
-                            {new Date(team.updated_at).toLocaleDateString(
-                              'en-US',
-                              {
-                                year: 'numeric',
-                                month: 'long',
-                                day: 'numeric',
-                                hour: '2-digit',
-                                minute: '2-digit',
-                              }
-                            )}
-                          </span>
-                        </div>
-                      </div>
-                    </div>
-                  </div>
-                )}
-
-                {activeTab === 'members' && (
-                  <div className="space-y-4">
-                    {/* Accepted Members */}
-                    <div>
-                      <h4 className="text-sm font-medium text-neutral-700 mb-3">
-                        Active Members ({acceptedMembers.length})
-                      </h4>
-                      <div className="space-y-2">
-                        {acceptedMembers.map((member) => (
-                          <div
-                            key={member.id}
-                            className="flex items-center gap-3 p-3 bg-neutral-50 rounded-lg"
-                          >
-                            <div className="w-10 h-10 rounded-full bg-neutral-200 flex items-center justify-center overflow-hidden">
-                              {member.user.avatar ? (
-                                <img
-                                  src={member.user.avatar}
-                                  alt={member.user.fullname}
-                                  className="w-full h-full object-cover"
-                                />
-                              ) : (
-                                <UserOutlined className="text-neutral-500" />
-                              )}
-                            </div>
-                            <div className="flex-1 min-w-0">
-                              <div className="flex items-center gap-2">
-                                <p className="text-sm font-medium text-neutral-900">
-                                  {member.user.fullname}
-                                </p>
-                                {member.role === 'leader' && (
-                                  <CrownOutlined className="text-yellow-600 text-xs" />
-                                )}
-                              </div>
-                              <p className="text-xs text-neutral-500">
-                                {member.user.email}
-                              </p>
-                              {member.user.skills.length > 0 && (
-                                <div className="flex flex-wrap gap-1 mt-1">
-                                  {member.user.skills
-                                    .slice(0, 2)
-                                    .map((skill, idx) => (
-                                      <span
-                                        key={idx}
-                                        className="px-1 py-0.5 bg-primary-100 text-primary-700 text-xs rounded"
-                                      >
-                                        {skill}
-                                      </span>
-                                    ))}
-                                  {member.user.skills.length > 2 && (
-                                    <span className="text-xs text-neutral-400">
-                                      +{member.user.skills.length - 2}
-                                    </span>
-                                  )}
-                                </div>
-                              )}
-                            </div>
-                            <div className="text-xs text-neutral-500">
-                              Joined{' '}
-                              {new Date(member.joined_at).toLocaleDateString()}
-                            </div>
-                          </div>
-                        ))}
-                      </div>
-                    </div>
-
-                    {/* Pending Members */}
-                    {pendingMembers.length > 0 && (
-                      <div>
-                        <h4 className="text-sm font-medium text-neutral-700 mb-3">
-                          Pending Members ({pendingMembers.length})
-                        </h4>
-                        <div className="space-y-2">
-                          {pendingMembers.map((member) => (
-                            <div
-                              key={member.id}
-                              className="flex items-center gap-3 p-3 bg-orange-50 border border-orange-200 rounded-lg"
-                            >
-                              <div className="w-10 h-10 rounded-full bg-neutral-200 flex items-center justify-center overflow-hidden">
-                                {member.user.avatar ? (
-                                  <img
-                                    src={member.user.avatar}
-                                    alt={member.user.fullname}
-                                    className="w-full h-full object-cover"
-                                  />
-                                ) : (
-                                  <UserOutlined className="text-neutral-500" />
-                                )}
-                              </div>
-                              <div className="flex-1 min-w-0">
-                                <div className="flex items-center gap-2">
-                                  <p className="text-sm font-medium text-neutral-900">
-                                    {member.user.fullname}
-                                  </p>
-                                  <ClockCircleOutlined className="text-orange-600 text-xs" />
-                                </div>
-                                <p className="text-xs text-neutral-500">
-                                  {member.user.email}
-                                </p>
-                              </div>
-                              <div className="flex gap-2">
-                                <Button
-                                  variant="primary"
-                                  size="sm"
-                                  className="flex items-center gap-1"
-                                  onClick={() =>
-                                    console.log('Accept member:', member.id)
-                                  }
-                                >
-                                  <CheckCircleOutlined className="text-xs" />
-                                  Accept
-                                </Button>
-                                <Button
-                                  variant="secondary"
-                                  size="sm"
-                                  className="flex items-center gap-1"
-                                  onClick={() =>
-                                    console.log('Reject member:', member.id)
-                                  }
-                                >
-                                  <CloseCircleOutlined className="text-xs" />
-                                  Reject
-                                </Button>
-                              </div>
-                            </div>
-                          ))}
-                        </div>
-                      </div>
-                    )}
-                  </div>
-                )}
-              </div>
-            </div>
-          )}
-        </div>
-
-        {/* Footer */}
-        <div className="flex items-center justify-between p-6 border-t border-neutral-200">
-          <div>
-            {team && (
-              <Button
-                variant="danger"
-                size="md"
-                onClick={() => setShowDeleteConfirm(true)}
-                className="flex items-center gap-2"
-              >
-                <DeleteOutlined />
-                Delete Team
-              </Button>
-            )}
-          </div>
-
-          <div className="flex items-center gap-3">
-            <Button variant="secondary" size="md" onClick={onClose}>
-              Cancel
-            </Button>
-            <Button
-              variant="primary"
-              size="md"
-              onClick={handleSave}
-              disabled={!canSave}
-              className="flex items-center gap-2"
-            >
-              <SaveOutlined />
-              {team ? 'Save Changes' : 'Create Team'}
-            </Button>
-          </div>
-        </div>
-      </div>
-
-      {/* Delete Confirmation Modal */}
-      {showDeleteConfirm && (
-        <div className="fixed inset-0 bg-black/50 flex items-center justify-center z-60 p-4">
-          <div className="bg-white rounded-lg shadow-xl w-full max-w-md">
-            <div className="p-6">
-              <div className="flex items-center gap-4 mb-4">
-                <div className="w-12 h-12 rounded-full bg-danger-100 flex items-center justify-center">
-                  <ExclamationOutlined className="text-danger-600 text-xl" />
-                </div>
-                <div>
-                  <h3 className="text-lg font-semibold text-neutral-900">
-                    Delete Team
-                  </h3>
-                  <p className="text-sm text-neutral-500">
-                    This action cannot be undone.
-                  </p>
-                </div>
-              </div>
-
-              <p className="text-sm text-neutral-700 mb-6">
-                Are you sure you want to delete "{team?.name}"? This will
-                permanently remove the team and all associated data.
-              </p>
-
-              <div className="flex items-center gap-3 justify-end">
-                <Button
-                  variant="secondary"
-                  size="md"
-                  onClick={() => setShowDeleteConfirm(false)}
-                >
-                  Cancel
-                </Button>
-                <Button
-                  variant="danger"
-                  size="md"
-                  onClick={handleDelete}
-                  className="flex items-center gap-2"
-                >
-                  <DeleteOutlined />
-                  Delete Team
-                </Button>
-              </div>
-            </div>
-          </div>
-        </div>
-      )}
-    </div>
-  );
-};
-
-export default ModalTeamDetail;

apps/backoffice/src/app/(protected)/hackathon-teams/_components/submission-modal.tsx

@@ -1,216 +0,0 @@
-import { FC } from 'react';
-import { Button } from '@imphnen-frontend-service/ui/atoms';
-import {
-  CloseOutlined,
-  LinkOutlined,
-  ProjectOutlined,
-} from '@ant-design/icons';
-
-interface SubmissionModalProps {
-  isOpen: boolean;
-  onClose: () => void;
-  teamId: string;
-  teamName: string;
-}
-
-const SubmissionModal: FC<SubmissionModalProps> = ({
-  isOpen,
-  onClose,
-  teamId,
-  teamName,
-}) => {
-  if (!isOpen) return null;
-
-  // Mock submission data
-  const mockSubmission = {
-    id: `submission-${teamId}`,
-    project_name: `${teamName} Project`,
-    repository_url: `https://github.com/${teamName
-      .toLowerCase()
-      .replace(/\s+/g, '-')}/hackathon-project`,
-    demo_url: `https://${teamName
-      .toLowerCase()
-      .replace(/\s+/g, '-')}.vercel.app`,
-    presentation_url: `https://docs.google.com/presentation/d/${teamId}/edit`,
-    submitted_at: new Date().toISOString(),
-    status: 'submitted',
-    description:
-      'An innovative solution built during the IMPHNEN x Kolosal.ai Hackathon 2025.',
-  };
-
-  return (
-    <div className="fixed inset-0 bg-black/50 flex items-center justify-center z-50 p-4">
-      <div className="bg-white rounded-lg shadow-xl w-full max-w-3xl max-h-[90vh] overflow-y-auto">
-        {/* Header */}
-        <div className="flex items-center justify-between p-6 border-b border-neutral-200">
-          <div className="flex items-center gap-3">
-            <div className="w-10 h-10 rounded-full bg-success-100 flex items-center justify-center">
-              <ProjectOutlined className="text-success-600 text-lg" />
-            </div>
-            <div>
-              <h2 className="text-xl font-semibold text-neutral-900">
-                Project Submission
-              </h2>
-              <p className="text-sm text-neutral-500">
-                {teamName} - Hackathon Submission Details
-              </p>
-            </div>
-          </div>
-          <button
-            className="p-2 hover:bg-neutral-100 rounded-lg transition-colors cursor-pointer"
-            onClick={onClose}
-          >
-            <CloseOutlined className="text-neutral-400 text-lg" />
-          </button>
-        </div>
-
-        {/* Content */}
-        <div className="p-6 space-y-6">
-          {/* Submission Status */}
-          <div className="flex items-center gap-3 p-4 bg-success-50 border border-success-200 rounded-lg">
-            <div className="w-3 h-3 rounded-full bg-success-500"></div>
-            <div>
-              <p className="text-sm font-medium text-success-800">
-                Submission Completed
-              </p>
-              <p className="text-xs text-success-600">
-                Submitted on{' '}
-                {new Date(mockSubmission.submitted_at).toLocaleDateString(
-                  'en-UK',
-                  {
-                    year: 'numeric',
-                    month: 'long',
-                    day: 'numeric',
-                    hour: '2-digit',
-                    minute: '2-digit',
-                  }
-                )}
-              </p>
-            </div>
-          </div>
-
-          {/* Project Information */}
-          <div className="grid gap-6">
-            <div className="space-y-2">
-              <label className="block text-sm font-medium text-neutral-700">
-                Project Name
-              </label>
-              <p className="text-sm text-neutral-900 p-3 bg-neutral-50 rounded-lg">
-                {mockSubmission.project_name}
-              </p>
-            </div>
-
-            <div className="space-y-2">
-              <label className="block text-sm font-medium text-neutral-700">
-                Project Description
-              </label>
-              <p className="text-sm text-neutral-900 p-3 bg-neutral-50 rounded-lg">
-                {mockSubmission.description}
-              </p>
-            </div>
-
-            {/* Links Section */}
-            <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
-              <div className="space-y-2">
-                <label className="block text-sm font-medium text-neutral-700">
-                  Repository
-                </label>
-                <div className="flex items-center gap-2 p-3 bg-neutral-50 rounded-lg">
-                  <span className="text-sm text-neutral-700 flex-1 truncate">
-                    {mockSubmission.repository_url}
-                  </span>
-                  <Button
-                    variant="secondary"
-                    size="sm"
-                    className="shrink-0"
-                    onClick={() =>
-                      window.open(mockSubmission.repository_url, '_blank')
-                    }
-                  >
-                    <LinkOutlined className="text-xs" />
-                  </Button>
-                </div>
-              </div>
-
-              <div className="space-y-2">
-                <label className="block text-sm font-medium text-neutral-700">
-                  Live Demo
-                </label>
-                <div className="flex items-center gap-2 p-3 bg-neutral-50 rounded-lg">
-                  <span className="text-sm text-neutral-700 flex-1 truncate">
-                    {mockSubmission.demo_url}
-                  </span>
-                  <Button
-                    variant="secondary"
-                    size="sm"
-                    className="shrink-0"
-                    onClick={() =>
-                      window.open(mockSubmission.demo_url, '_blank')
-                    }
-                  >
-                    <LinkOutlined className="text-xs" />
-                  </Button>
-                </div>
-              </div>
-            </div>
-
-            <div className="space-y-2">
-              <label className="block text-sm font-medium text-neutral-700">
-                Presentation
-              </label>
-              <div className="flex items-center gap-2 p-3 bg-neutral-50 rounded-lg">
-                <span className="text-sm text-neutral-700 flex-1 truncate">
-                  {mockSubmission.presentation_url}
-                </span>
-                <Button
-                  variant="secondary"
-                  size="sm"
-                  className="shrink-0"
-                  onClick={() =>
-                    window.open(mockSubmission.presentation_url, '_blank')
-                  }
-                >
-                  <LinkOutlined className="text-xs" />
-                </Button>
-              </div>
-            </div>
-          </div>
-
-          {/* Action Note */}
-          <div className="p-4 bg-info-50 border border-info-200 rounded-lg">
-            <p className="text-sm text-info-800">
-              <strong>Note:</strong> This is a submission preview. The team has
-              successfully submitted their project. You can review the
-              submission details and access the project links above.
-            </p>
-          </div>
-        </div>
-
-        {/* Footer */}
-        <div className="flex items-center justify-end p-6 border-t border-neutral-200">
-          <div className="flex items-center gap-3">
-            <Button variant="secondary" size="md" onClick={onClose}>
-              Close
-            </Button>
-            <Button
-              variant="primary"
-              size="md"
-              onClick={() => {
-                // Navigate to hackathon-submissions page
-                console.log('Navigate to full submissions page');
-                // You can implement navigation here
-                onClose();
-              }}
-              className="flex items-center gap-2"
-            >
-              <ProjectOutlined />
-              View All Submissions
-            </Button>
-          </div>
-        </div>
-      </div>
-    </div>
-  );
-};
-
-export default SubmissionModal;

apps/backoffice/src/app/(protected)/hackathon-teams/_components/team-banner-placeholder.tsx

@@ -1,82 +0,0 @@
-import { FC } from 'react';
-import { TeamOutlined } from '@ant-design/icons';
-import { cn } from '@imphnen-frontend-service/utils';
-
-interface TeamBannerPlaceholderProps {
-  banner?: string;
-  teamName: string;
-  className?: string;
-  showPlaceholder?: boolean;
-}
-
-const TeamBannerPlaceholder: FC<TeamBannerPlaceholderProps> = ({
-  banner,
-  teamName,
-  className = '',
-  showPlaceholder = true,
-}) => {
-  const aspectRatioClass = 'aspect-[3/1]'; // 3:1 aspect ratio
-
-  if (!banner && !showPlaceholder) {
-    return null;
-  }
-
-  if (banner) {
-    return (
-      <div
-        className={cn(
-          'w-full bg-gray-100 overflow-hidden relative',
-          aspectRatioClass,
-          className
-        )}
-      >
-        <img
-          src={banner}
-          alt={`${teamName} banner`}
-          className="w-full h-full object-cover"
-          onError={(e) => {
-            // Fallback to placeholder if image fails to load
-            const target = e.target as HTMLImageElement;
-            target.style.display = 'none';
-            const placeholder = target.nextElementSibling as HTMLElement;
-            if (placeholder) {
-              placeholder.style.display = 'flex';
-            }
-          }}
-        />
-        {/* Fallback placeholder (hidden by default, shown on image error) */}
-        <div
-          className={cn(
-            'absolute inset-0 bg-linear-to-r from-gray-100 to-gray-200 flex items-center justify-center',
-            'hidden' // Hidden by default
-          )}
-        >
-          <div className="text-center">
-            <TeamOutlined className="text-4xl text-gray-400 mb-2" />
-            <p className="text-sm text-gray-500 font-medium">{teamName}</p>
-            <p className="text-xs text-gray-400">Team Banner</p>
-          </div>
-        </div>
-      </div>
-    );
-  }
-
-  // No banner - show placeholder
-  return (
-    <div
-      className={cn(
-        'w-full bg-linear-to-r from-gray-100 to-gray-200 flex items-center justify-center',
-        aspectRatioClass,
-        className
-      )}
-    >
-      <div className="text-center">
-        <TeamOutlined className="text-4xl text-gray-400 mb-2" />
-        <p className="text-sm text-gray-500 font-medium">{teamName}</p>
-        <p className="text-xs text-gray-400">No Banner</p>
-      </div>
-    </div>
-  );
-};
-
-export default TeamBannerPlaceholder;

apps/backoffice/src/app/(protected)/hackathon-teams/page.tsx

@@ -1,476 +1,179 @@
-import { FC, ReactElement, useState, useMemo, useCallback } from 'react';
-import ModalTeamDetail from './_components/modal-team-detail-new';
-import SubmissionModal from './_components/submission-modal';
-import { CityFilterSelect } from '../../../components/city-filter-select';
-import INDONESIAN_CITIES from '../../../constants/cities';
+import { FC, ReactElement, useState } from 'react';
 import {
   BackofficeWrapper,
   DataTable,
 } from '@imphnen-frontend-service/ui/organisms';
-import { ColumnDef } from '@tanstack/react-table';
+import {
+  ColumnDef,
+  getCoreRowModel,
+  getPaginationRowModel,
+  PaginationState,
+  RowSelectionState,
+  useReactTable,
+} from '@tanstack/react-table';
 import { Button } from '@imphnen-frontend-service/ui/atoms';
 import { cn } from '@imphnen-frontend-service/utils';
-import {
-  EditOutlined,
-  TeamOutlined,
-  SearchOutlined,
-  FilterOutlined,
-  PlusOutlined,
-  UserOutlined,
-  ArrowRightOutlined,
-} from '@ant-design/icons';
-
-// Define interface outside component
-interface TeamMember {
-  id: string;
-  joined_at: string;
-  role: 'leader' | 'member';
-  status: 'pending' | 'accepted' | 'rejected';
-  team_id: string;
-  user: {
-    avatar?: string;
-    bio?: string;
-    created_at: string;
-    email: string;
-    fullname: string;
-    id: string;
-    is_active: boolean;
-    location: string;
-    phone_number?: string;
-    skills: string[];
-    updated_at: string;
-  };
-  user_id: string;
-}
-
-interface TeamType {
-  id: string;
-  name: string;
-  description?: string;
-  city: string;
-  banner?: string;
-  logo?: string;
-  visibility: 'public' | 'private';
-  member_count: number;
-  has_submission: boolean;
-  created_at: string;
-  updated_at: string;
-  leader_id: string;
-  members: TeamMember[];
-}
-
-// Move mock data outside component to prevent recreation
-// Sample data for popular cities from the INDONESIAN_CITIES constant
-const cities = INDONESIAN_CITIES.slice(0, 20); // Use first 20 cities for variety
-const teamNames = [
-  'Innovators',
-  'Hackers',
-  'Builders',
-  'Creators',
-  'Pioneers',
-  'Developers',
-  'Engineers',
-  'Coders',
-  'Tech Stars',
-  'Digital Wizards',
-];
-
-const descriptions = [
-  'Building innovative solutions for modern problems with cutting-edge technology',
-  'Passionate developers creating the next generation of web applications',
-  'Focused on sustainable tech solutions that make a positive impact',
-  'Experienced team working on scalable fintech innovations',
-  'Creative minds developing user-centric mobile applications',
-  'Full-stack developers building comprehensive business solutions',
-  'AI enthusiasts creating intelligent automation tools',
-  'Open source advocates building community-driven platforms',
-];
-
-const skills = [
-  'Frontend Developer',
-  'Backend Developer',
-  'Full Stack Developer',
-  'DevOps Engineer',
-  'UI/UX Designer',
-  'Product Manager',
-  'Data Scientist',
-  'Mobile Developer',
-];
-
-const generateMembers = (
-  count: number,
-  teamId: string,
-  leaderId: string
-): TeamMember[] => {
-  return Array.from({ length: count }, (_, i) => {
-    const isLeader = i === 0;
-    const memberId = isLeader ? leaderId : `user-${teamId}-${i}`;
-
-    return {
-      id: `member-${teamId}-${i}`,
-      joined_at: new Date(
-        Date.now() - (count - i) * 86400000 * Math.random() * 5
-      ).toISOString(),
-      role: isLeader ? 'leader' : 'member',
-      status: Math.random() > 0.8 ? 'pending' : 'accepted',
-      team_id: teamId,
-      user: {
-        id: memberId,
-        avatar:
-          Math.random() > 0.6
-            ? `https://ui-avatars.com/api/?name=${encodeURIComponent(
-                `User ${i}`
-              )}`
-            : undefined,
-        bio:
-          Math.random() > 0.5
-            ? `Passionate ${skills[
-                Math.floor(Math.random() * skills.length)
-              ].toLowerCase()} with ${
-                Math.floor(Math.random() * 8) + 1
-              }+ years experience`
-            : undefined,
-        created_at: new Date(
-          Date.now() - Math.random() * 365 * 86400000
-        ).toISOString(),
-        email: `user${i}.team${teamId}@example.com`,
-        fullname: `${
-          ['Ahmad', 'Sofia', 'Budi', 'Sari', 'Rizki', 'Maya', 'Andi', 'Dina'][
-            Math.floor(Math.random() * 8)
-          ]
-        } ${
-          [
-            'Wijuana',
-            'Santoso',
-            'Pratama',
-            'Dewi',
-            'Nugroho',
-            'Sari',
-            'Putra',
-            'Lestari',
-          ][Math.floor(Math.random() * 8)]
-        }`,
-        is_active: true,
-        location: cities[Math.floor(Math.random() * cities.length)],
-        phone_number:
-          Math.random() > 0.7
-            ? `+62${Math.floor(Math.random() * 9000000000) + 1000000000}`
-            : undefined,
-        skills: skills.slice(0, Math.floor(Math.random() * 3) + 1),
-        updated_at: new Date().toISOString(),
-      },
-      user_id: memberId,
-    };
-  });
-};
-
-const mockData: TeamType[] = Array.from({ length: 50 }, (_, i) => {
-  const teamId = `team-${String(i + 1).padStart(3, '0')}`;
-  const memberCount = Math.floor(Math.random() * 5) + 1; // 1-5 members
-  const leaderId = `leader-${teamId}`;
-  const members = generateMembers(memberCount, teamId, leaderId);
-
-  return {
-    id: teamId,
-    name: `Team ${teamNames[i % teamNames.length]} ${
-      Math.floor(i / teamNames.length) + 1
-    }`,
-    description:
-      i % 4 === 0 ? undefined : descriptions[i % descriptions.length],
-    city: cities[i % cities.length],
-    banner:
-      i % 3 === 0 ? undefined : `https://picsum.photos/600/200?random=${i}`, // 3:1 aspect ratio
-    logo:
-      i % 4 === 0
-        ? undefined
-        : `https://ui-avatars.com/api/?name=${encodeURIComponent(
-            teamNames[i % teamNames.length]
-          )}&background=random&size=120`,
-    visibility: i % 4 === 0 ? 'private' : 'public',
-    member_count: memberCount,
-    has_submission: i % 3 !== 0,
-    created_at: new Date(
-      Date.now() - i * 86400000 * (Math.random() * 15 + 1)
-    ).toISOString(),
-    updated_at: new Date().toISOString(),
-    leader_id: leaderId,
-    members: members,
-  };
-});
+import { useTeams } from '@imphnen-frontend-service/service';
+import { EditOutlined } from '@ant-design/icons';
 
 export const HackathonTeamsPage: FC = (): ReactElement => {
-  const [showDetailModal, setShowDetailModal] = useState(false);
-  const [showNewTeamModal, setShowNewTeamModal] = useState(false);
-  const [showSubmissionModal, setShowSubmissionModal] = useState(false);
-  const [selectedTeam, setSelectedTeam] = useState<TeamType | null>(null);
-  const [selectedSubmissionTeam, setSelectedSubmissionTeam] =
-    useState<TeamType | null>(null);
-  const [globalFilter, setGlobalFilter] = useState('');
+  const { data: teamsData } = useTeams();
 
-  // Advanced filtering states
-  const [visibilityFilter, setVisibilityFilter] = useState('all');
-  const [cityFilter, setCityFilter] = useState('all');
-  const [submissionFilter, setSubmissionFilter] = useState('all');
-  const [memberCountFilter, setMemberCountFilter] = useState('all');
+  const [rowSelection, setRowSelection] = useState<RowSelectionState>({});
+  const [pagination, setPagination] = useState<PaginationState>({
+    pageIndex: 0,
+    pageSize: 9,
+  });
 
-  // Constants
-  const pageSize = 10;
-
-  // Memoize the callback to prevent recreation
-  const handleShowDetailModal = useCallback((team: TeamType) => {
-    setSelectedTeam(team);
-    setShowDetailModal(true);
-  }, []);
-
-  const handleCloseDetailModal = useCallback(() => {
-    setShowDetailModal(false);
-    setSelectedTeam(null);
-  }, []);
-
-  const handleShowNewTeamModal = useCallback(() => {
-    setShowNewTeamModal(true);
-  }, []);
-
-  const handleCloseNewTeamModal = useCallback(() => {
-    setShowNewTeamModal(false);
-  }, []);
-
-  const handleShowSubmissionModal = useCallback((team: TeamType) => {
-    setSelectedSubmissionTeam(team);
-    setShowSubmissionModal(true);
-  }, []);
-
-  const handleCloseSubmissionModal = useCallback(() => {
-    setShowSubmissionModal(false);
-    setSelectedSubmissionTeam(null);
-  }, []);
-
-  // Filter data based on current filter states
-  const filteredData = useMemo(() => {
-    return mockData.filter((team) => {
-      // Global search filter
-      if (globalFilter) {
-        const searchTerm = globalFilter.toLowerCase();
-        const leaderName =
-          team.members.find((m) => m.role === 'leader')?.user.fullname || '';
-        const memberNames = team.members.map((m) => m.user.fullname).join(' ');
-
-        if (
-          !team.name.toLowerCase().includes(searchTerm) &&
-          !team.city.toLowerCase().includes(searchTerm) &&
-          !leaderName.toLowerCase().includes(searchTerm) &&
-          !memberNames.toLowerCase().includes(searchTerm)
-        ) {
-          return false;
-        }
-      }
-
-      // Visibility filter
-      if (visibilityFilter !== 'all' && team.visibility !== visibilityFilter) {
-        return false;
-      }
-
-      // City filter
-      if (cityFilter !== 'all' && team.city !== cityFilter) {
-        return false;
-      }
-
-      // Submission filter
-      if (submissionFilter !== 'all') {
-        const hasSubmission = submissionFilter === 'submitted';
-        if (team.has_submission !== hasSubmission) return false;
-      }
-
-      // Member count filter
-      if (memberCountFilter !== 'all') {
-        const count = parseInt(memberCountFilter);
-        if (team.member_count !== count) return false;
-      }
-
-      return true;
-    });
-  }, [
-    globalFilter,
-    visibilityFilter,
-    cityFilter,
-    submissionFilter,
-    memberCountFilter,
-  ]);
-
-  // Memoize columns to prevent recreation on every render
-  const columns: ColumnDef<TeamType>[] = useMemo(
-    () => [
-      {
-        accessorKey: 'name',
-        header: 'Team',
-        cell: ({ row }) => {
-          const team = row.original;
-          return (
-            <div className="flex items-center gap-3">
-              {/* Team Logo */}
-              <div className="w-10 h-10 rounded-full bg-neutral-100 flex items-center justify-center shrink-0 overflow-hidden">
-                {team.logo ? (
-                  <img
-                    src={team.logo}
-                    alt={team.name}
-                    className="w-full h-full object-cover"
-                  />
-                ) : (
-                  <TeamOutlined className="text-neutral-400 text-lg" />
-                )}
-              </div>
-              {/* Team Name & Description */}
-              <div className="min-w-0 flex-1">
-                <p className="font-medium text-neutral-900 truncate">
-                  {team.name}
-                </p>
-              </div>
-            </div>
-          );
-        },
-        enableSorting: true,
+  const mockData: TeamType[] = Array.from({ length: 90 }, (_, i) => ({
+    id: `team-${i + 1}`,
+    name: `Team ${i + 1} - ${i % 3 === 0 ? 'Innovators' : 'Hackers'}`,
+    city: i % 2 === 0 ? 'Jakarta' : 'Bandung',
+    visibility: i % 4 === 0 ? 'private' : 'public',
+    member_count: Math.floor(Math.random() * 4) + 1,
+    has_submission: i % 3 !== 0,
+    created_at: new Date().toISOString(),
+    updated_at: new Date().toISOString(),
+    leader: {
+      user: {
+        fullname: `Leader User ${i}`,
+        email: `leader${i}@example.com`,
       },
-      {
-        accessorKey: 'city',
-        header: 'City',
-        cell: ({ row }) => (
-          <span className="text-neutral-700">{row.original.city}</span>
-        ),
-        enableSorting: true,
-      },
-      {
-        accessorKey: 'visibility',
-        header: 'Visibility',
-        cell: ({ row }) => {
-          const isPublic = row.original.visibility === 'public';
-          return (
-            <span
-              className={cn(
-                'inline-flex items-center gap-1 px-2 py-1 rounded-2xl text-xs font-medium',
-                isPublic
-                  ? 'bg-success-100 text-success-800'
-                  : 'bg-neutral-100 text-neutral-700'
-              )}
-            >
-              {isPublic ? 'Public' : 'Private'}
-            </span>
-          );
-        },
-        enableSorting: true,
-      },
-      {
-        accessorKey: 'member_count',
-        header: 'Members',
-        cell: ({ row }) => (
-          <div className="flex items-center gap-2">
-            <UserOutlined className="text-neutral-400 text-sm" />
-            <span className="text-sm text-neutral-700">
-              {row.original.member_count}
-            </span>
-          </div>
-        ),
-        enableSorting: true,
-      },
-      {
-        id: 'leader',
-        header: 'Leader',
-        cell: ({ row }) => {
-          const leader = row.original.members.find(
-            (m) => m.role === 'leader'
-          )?.user;
-          return leader ? (
-            <div>
-              <div className="text-sm font-medium text-neutral-900">
-                {leader.fullname}
-              </div>
-              <div className="text-xs text-neutral-500">{leader.email}</div>
-            </div>
-          ) : (
-            <span className="text-neutral-400 italic">No leader</span>
-          );
-        },
-        enableSorting: false,
-      },
-      {
-        accessorKey: 'has_submission',
-        header: 'Submission',
-        cell: ({ row }) => {
-          const hasSubmission = row.original.has_submission;
-          return (
-            <div className="flex items-center gap-2">
-              <div
-                className={cn(
-                  'w-2 h-2 rounded-full',
-                  hasSubmission ? 'bg-success-500' : 'bg-danger-500'
-                )}
-              />
-              <div className="flex flex-col">
-                <span
-                  className={cn(
-                    'text-sm font-medium',
-                    hasSubmission ? 'text-success-700' : 'text-danger-700'
-                  )}
-                >
-                  {hasSubmission ? 'Submitted' : 'Not Submitted'}
-                </span>
-                {hasSubmission && (
-                  <button
-                    className="text-xs text-primary-600 hover:text-primary-800 text-left cursor-pointer"
-                    onClick={() => handleShowSubmissionModal(row.original)}
-                  >
-                    View Submission <ArrowRightOutlined />
-                  </button>
-                )}
-              </div>
-            </div>
-          );
-        },
-        enableSorting: true,
-        sortingFn: (rowA, rowB) => {
-          const aSubmission = rowA.original.has_submission;
-          const bSubmission = rowB.original.has_submission;
-          if (aSubmission && !bSubmission) return -1;
-          if (!aSubmission && bSubmission) return 1;
-          return 0;
-        },
-      },
-      {
-        accessorKey: 'created_at',
-        header: 'Created',
-        cell: ({ row }) => (
-          <span className="text-neutral-900 text-sm">
-            {new Date(row.original.created_at).toLocaleDateString('en-UK', {
-              year: 'numeric',
-              month: 'short',
-              day: 'numeric',
-            })}
+    },
+  }));
+
+  interface TeamType {
+    id: string;
+    name: string;
+    city: string;
+    visibility: 'public' | 'private';
+    member_count: number;
+    has_submission: boolean;
+    created_at: string;
+    updated_at: string;
+    leader?: {
+      user: {
+        fullname: string;
+        email: string;
+      };
+    };
+  }
+
+  const columns: ColumnDef<TeamType>[] = [
+    {
+      accessorKey: 'id',
+      header: 'ID',
+    },
+    {
+      accessorKey: 'name',
+      header: 'Team Name',
+    },
+    {
+      accessorKey: 'city',
+      header: 'City',
+    },
+    {
+      accessorKey: 'visibility',
+      header: 'Visibility',
+      cell: ({ row }) => {
+        const isPublic = row.original.visibility === 'public';
+        return (
+          <span
+            className={cn(
+              'py-2 px-4 text-sm rounded-2xl text-center',
+              isPublic
+                ? 'bg-info-200 text-info-700'
+                : 'bg-gray-200 text-gray-700'
+            )}
+          >
+            {isPublic ? 'Public' : 'Private'}
           </span>
-        ),
-        enableSorting: true,
-        sortingFn: 'datetime',
+        );
       },
-      {
-        id: 'actions',
-        header: 'Actions',
-        meta: { cellClassName: cn('w-48') },
-        cell: ({ row }) => (
-          <div className="flex items-center gap-2">
-            <Button
-              variant="primary"
-              size="sm"
-              className="flex items-center gap-2 text-sm px-4 py-2"
-              onClick={() => handleShowDetailModal(row.original)}
-            >
-              <EditOutlined className="text-sm" />
-              Manage
-            </Button>
+    },
+    {
+      accessorKey: 'member_count',
+      header: 'Members',
+    },
+    {
+      id: 'leader',
+      header: 'Leader',
+      cell: ({ row }) => {
+        const leader = row.original.leader?.user;
+        return leader ? (
+          <div>
+            <div className="text-sm font-medium text-gray-900">
+              {leader.fullname}
+            </div>
+            <div className="text-xs text-gray-500">{leader.email}</div>
           </div>
-        ),
-        enableSorting: false,
+        ) : (
+          <span className="text-gray-400 italic">-</span>
+        );
       },
-    ],
-    [handleShowDetailModal, handleShowSubmissionModal]
-  );
+    },
+    {
+      accessorKey: 'has_submission',
+      header: 'Submitted',
+      cell: ({ row }) => {
+        const hasSubmission = row.original.has_submission;
+        return (
+          <span
+            className={cn(
+              'py-2 px-4 text-sm rounded-2xl text-center',
+              hasSubmission
+                ? 'bg-success-200 text-success-700'
+                : 'bg-danger-200 text-danger-700'
+            )}
+          >
+            {hasSubmission ? 'Yes' : 'No'}
+          </span>
+        );
+      },
+    },
+    {
+      accessorKey: 'updated_at',
+      header: 'Last Updated',
+      cell: ({ row }) => {
+        return new Date(row.original.updated_at).toLocaleDateString();
+      },
+    },
+    {
+      id: 'actions',
+      header: 'Action',
+      meta: { cellClassName: cn('w-48') },
+      cell: ({ row }) => (
+        <div className="flex items-center gap-2">
+          <Button
+            variant="primary"
+            size="sm"
+            className="flex items-center gap-2 w-max"
+            onClick={() => {
+              // View detail logic
+            }}
+          >
+            <EditOutlined className="text-base" /> View & Manage
+          </Button>
+        </div>
+      ),
+    },
+  ];
+
+  const table = useReactTable({
+    data: mockData,
+    columns,
+    state: {
+      pagination,
+      rowSelection,
+    },
+    enableRowSelection: true,
+    onRowSelectionChange: setRowSelection,
+    getCoreRowModel: getCoreRowModel(),
+    getPaginationRowModel: getPaginationRowModel(),
+    onPaginationChange: setPagination,
+    pageCount: Math.ceil(mockData.length / pagination.pageSize),
+    manualPagination: false,
+  });
 
   return (
     <BackofficeWrapper title="IMPHNEN x Kolosal.ai Hackathon 2025">
@@ -479,204 +182,27 @@ export const HackathonTeamsPage: FC = (): ReactElement => {
       </h1>
       {/* Filters and actions */}
       <section className="bg-white rounded-md shadow p-8 flex flex-col gap-6">
-        <div className="flex flex-wrap gap-3 items-center justify-between">
-          {/* Left side - Search & filters */}
-          <div className="flex flex-wrap gap-3 items-center">
-            {/* Search bar */}
-            <div className="relative">
-              <SearchOutlined className="absolute left-3 top-1/2 transform -translate-y-1/2 text-neutral-400 text-sm" />
-              <input
-                type="text"
-                className="border border-neutral-200 rounded-lg pl-10 pr-4 py-2.5 text-sm w-full sm:w-80 focus:border-primary-500 focus:outline-none"
-                placeholder="Search teams by name, city, or leader..."
-                value={globalFilter}
-                onChange={(e) => setGlobalFilter(e.target.value)}
-              />
-            </div>
-
-            {/* Visibility Filter */}
-            <div className="relative">
-              <FilterOutlined className="absolute left-3 top-1/2 transform -translate-y-1/2 text-neutral-400 text-sm pointer-events-none z-10" />
-              <select
-                className="border border-neutral-200 rounded-lg pl-10 pr-10 py-2.5 text-sm w-full sm:w-40 focus:border-primary-500 focus:outline-none appearance-none bg-white cursor-pointer"
-                value={visibilityFilter}
-                onChange={(e) => setVisibilityFilter(e.target.value)}
-              >
-                <option value="all">All Visibility</option>
-                <option value="public">Public</option>
-                <option value="private">Private</option>
-              </select>
-            </div>
-
-            {/* City Filter */}
-            <CityFilterSelect
-              value={cityFilter}
-              onChange={setCityFilter}
-              className="w-full sm:w-44"
-              placeholder="Search cities..."
-              allOptionLabel="All Cities"
-            />
-
-            {/* Member Count Filter */}
-            <div className="relative">
-              <FilterOutlined className="absolute left-3 top-1/2 transform -translate-y-1/2 text-neutral-400 text-sm pointer-events-none z-10" />
-              <select
-                className="border border-neutral-200 rounded-lg pl-10 pr-10 py-2.5 text-sm w-full sm:w-55 focus:border-primary-500 focus:outline-none appearance-none bg-white cursor-pointer"
-                value={memberCountFilter}
-                onChange={(e) => setMemberCountFilter(e.target.value)}
-              >
-                <option value="all">All Member Count</option>
-                <option value="1">1 Member</option>
-                <option value="2">2 Members</option>
-                <option value="3">3 Members</option>
-                <option value="4">4 Members</option>
-                <option value="5">5 Members</option>
-              </select>
-            </div>
-
-            {/* Submission Filter */}
-            <div className="relative">
-              <FilterOutlined className="absolute left-3 top-1/2 transform -translate-y-1/2 text-neutral-400 text-sm pointer-events-none z-10" />
-              <select
-                className="border border-neutral-200 rounded-lg pl-10 pr-10 py-2.5 text-sm w-full sm:w-44 focus:border-primary-500 focus:outline-none appearance-none bg-white cursor-pointer"
-                value={submissionFilter}
-                onChange={(e) => setSubmissionFilter(e.target.value)}
-              >
-                <option value="all">All Submissions</option>
-                <option value="submitted">Submitted</option>
-                <option value="not_submitted">Not Submitted</option>
-              </select>
-            </div>
-          </div>
-
-          {/* Right side - Add Team Button */}
-          <div className="flex items-center gap-3">
-            <Button
-              variant="primary"
-              size="md"
-              className="flex items-center gap-2 px-4 py-2"
-              onClick={handleShowNewTeamModal}
-            >
-              <PlusOutlined className="text-sm" />
-              Add Team
-            </Button>
-          </div>
+        <div className="flex flex-wrap gap-3 items-center">
+          <input
+            type="text"
+            className="border border-neutral-200 rounded-md px-3 py-2 text-label1 w-full sm:w-64"
+            placeholder="Search name or email"
+          />
+          <select className="border border-neutral-200 rounded-md px-3 py-2 text-label1 w-full sm:w-40">
+            <option value="all">All Status</option>
+            <option value="active">Active</option>
+            <option value="suspended">Suspended</option>
+          </select>
+          <select className="border border-neutral-200 rounded-md px-3 py-2 text-label1 w-full sm:w-40">
+            <option value="all">All City</option>
+            <option value="jakarta">Jakarta</option>
+            <option value="bandung">Bandung</option>
+          </select>
         </div>
-
-        {/* Active filters display */}
-        {(visibilityFilter !== 'all' ||
-          cityFilter !== 'all' ||
-          submissionFilter !== 'all' ||
-          memberCountFilter !== 'all') && (
-          <div className="flex flex-wrap gap-2 items-center">
-            <span className="text-sm text-neutral-600">Active filters:</span>
-
-            {/* Visibility filter badge */}
-            {visibilityFilter !== 'all' && (
-              <span className="inline-flex items-center gap-1 px-2 py-1 bg-info-100 text-info-800 rounded-2xl text-sm">
-                Visibility: {visibilityFilter}
-                <button
-                  onClick={() => setVisibilityFilter('all')}
-                  className="text-info-600 hover:text-info-800 cursor-pointer"
-                >
-                  ✕
-                </button>
-              </span>
-            )}
-
-            {/* City filter badge */}
-            {cityFilter !== 'all' && (
-              <span className="inline-flex items-center gap-1 px-2 py-1 bg-green-100 text-green-800 rounded-2xl text-sm">
-                City: {cityFilter}
-                <button
-                  onClick={() => setCityFilter('all')}
-                  className="text-green-600 hover:text-green-800 cursor-pointer"
-                >
-                  ✕
-                </button>
-              </span>
-            )}
-
-            {/* Member count filter badge */}
-            {memberCountFilter !== 'all' && (
-              <span className="inline-flex items-center gap-1 px-2 py-1 bg-blue-100 text-blue-800 rounded-2xl text-sm">
-                Members: {memberCountFilter}
-                <button
-                  onClick={() => setMemberCountFilter('all')}
-                  className="text-blue-600 hover:text-blue-800 cursor-pointer"
-                >
-                  ✕
-                </button>
-              </span>
-            )}
-
-            {/* Submission filter badge */}
-            {submissionFilter !== 'all' && (
-              <span className="inline-flex items-center gap-1 px-2 py-1 bg-purple-100 text-purple-800 rounded-2xl text-sm">
-                Submission: {submissionFilter}
-                <button
-                  onClick={() => setSubmissionFilter('all')}
-                  className="text-purple-600 hover:text-purple-800 cursor-pointer"
-                >
-                  ✕
-                </button>
-              </span>
-            )}
-
-            {/* Clear all filters */}
-            <Button
-              variant="secondary"
-              size="sm"
-              onClick={() => {
-                setVisibilityFilter('all');
-                setCityFilter('all');
-                setSubmissionFilter('all');
-                setMemberCountFilter('all');
-                setGlobalFilter('');
-              }}
-              className="text-sm text-neutral-600"
-            >
-              Clear All
-            </Button>
-          </div>
-        )}
-
-        {/* Pagination-aware results display */}
-        {filteredData.length > 0 && (
-          <div className="text-sm text-neutral-600">
-            Showing {Math.min(pageSize, filteredData.length)} of{' '}
-            {filteredData.length} teams
-            {filteredData.length > pageSize}
-          </div>
-        )}
-
         {/* Table */}
-        <DataTable data={filteredData} columns={columns} pageSize={10} />
+        <DataTable data={mockData} columns={columns} table={table} />
       </section>
-
-      {/* Modals component */}
-      <ModalTeamDetail
-        isOpen={showDetailModal}
-        onClose={handleCloseDetailModal}
-        team={selectedTeam}
-      />
-
-      {/* New Team Modal */}
-      <ModalTeamDetail
-        isOpen={showNewTeamModal}
-        onClose={handleCloseNewTeamModal}
-        team={null} // null indicates creating new team
-      />
-
-      {/* Submission Modal */}
-      {selectedSubmissionTeam && (
-        <SubmissionModal
-          isOpen={showSubmissionModal}
-          onClose={handleCloseSubmissionModal}
-          teamId={selectedSubmissionTeam.id}
-          teamName={selectedSubmissionTeam.name}
-        />
-      )}
+      {/* Modals extracted into shared backoffice components */}
     </BackofficeWrapper>
   );
 };

apps/backoffice/src/app/(protected)/hackathon-users/page.tsx

@@ -14,7 +14,7 @@ import {
   FilterOutlined,
   PlusOutlined,
 } from '@ant-design/icons';
-import { CityFilterSelect } from '../../../components/city-filter-select';
+// Removed unused SearchOutlined icon after schema revision
 
 // Define interface outside component
 interface UserType {
@@ -89,7 +89,7 @@ export const HackathonUsersPage: FC = (): ReactElement => {
 
   // Advanced filtering states
   const [statusFilter, setStatusFilter] = useState('all');
-  const [cityFilter, setCityFilter] = useState('all');
+  const [locationFilter, setLocationFilter] = useState('all');
   const [skillsFilter, setSkillsFilter] = useState<string[]>([]);
 
   // Constants
@@ -123,8 +123,8 @@ export const HackathonUsersPage: FC = (): ReactElement => {
         if (user.is_active !== isActive) return false;
       }
 
-      // City filter
-      if (cityFilter !== 'all' && user.location !== cityFilter) {
+      // Location filter
+      if (locationFilter !== 'all' && user.location !== locationFilter) {
         return false;
       }
 
@@ -138,7 +138,7 @@ export const HackathonUsersPage: FC = (): ReactElement => {
 
       return true;
     });
-  }, [statusFilter, cityFilter, skillsFilter]);
+  }, [statusFilter, locationFilter, skillsFilter]);
 
   // Memoize columns to prevent recreation on every render
   const columns: ColumnDef<UserType>[] = useMemo(
@@ -315,25 +315,22 @@ export const HackathonUsersPage: FC = (): ReactElement => {
               </select>
             </div>
 
-            {/* City Filter */}
-            <CityFilterSelect
-              value={cityFilter}
-              onChange={setCityFilter}
-              className="w-full sm:w-44"
-              placeholder="Search cities..."
-              allOptionLabel="All Cities"
-            />
-            {cityFilter !== 'all' && (
-              <span className="inline-flex items-center gap-1 px-2 py-1 bg-green-100 text-green-800 rounded-2xl text-sm">
-                Location: {cityFilter}
-                <button
-                  onClick={() => setCityFilter('all')}
-                  className="text-green-600 hover:text-green-800 cursor-pointer"
-                >
-                  ✕
-                </button>
-              </span>
-            )}
+            {/* Location Filter */}
+            <div className="relative">
+              <FilterOutlined className="absolute left-3 top-1/2 transform -translate-y-1/2 text-neutral-400 text-sm pointer-events-none z-10" />
+              <select
+                className="border border-neutral-200 rounded-lg pl-10 pr-10 py-2.5 text-sm w-full sm:w-44 focus:border-primary-500 focus:outline-none appearance-none bg-white cursor-pointer"
+                value={locationFilter}
+                onChange={(e) => setLocationFilter(e.target.value)}
+              >
+                <option value="all">All Locations</option>
+                {locations.map((location) => (
+                  <option key={location} value={location}>
+                    {location}
+                  </option>
+                ))}
+              </select>
+            </div>
 
             {/* Skills Filter with Icon */}
             <div className="relative">
@@ -381,7 +378,7 @@ export const HackathonUsersPage: FC = (): ReactElement => {
         {/* Active filters display */}
         {(skillsFilter.length > 0 ||
           statusFilter !== 'all' ||
-          cityFilter !== 'all') && (
+          locationFilter !== 'all') && (
           <div className="flex flex-wrap gap-2 items-center">
             <span className="text-sm text-neutral-600">Active filters:</span>
 
@@ -399,11 +396,11 @@ export const HackathonUsersPage: FC = (): ReactElement => {
             )}
 
             {/* Location filter badge */}
-            {cityFilter !== 'all' && (
+            {locationFilter !== 'all' && (
               <span className="inline-flex items-center gap-1 px-2 py-1 bg-green-100 text-green-800 rounded-2xl text-sm">
-                City: {cityFilter}
+                Location: {locationFilter}
                 <button
-                  onClick={() => setCityFilter('all')}
+                  onClick={() => setLocationFilter('all')}
                   className="text-green-600 hover:text-green-800 cursor-pointer"
                 >
                   ✕
@@ -435,7 +432,7 @@ export const HackathonUsersPage: FC = (): ReactElement => {
               size="sm"
               onClick={() => {
                 setStatusFilter('all');
-                setCityFilter('all');
+                setLocationFilter('all');
                 setSkillsFilter([]);
                 setGlobalFilter('');
               }}

apps/backoffice/src/components/city-filter-select.tsx

@@ -1,148 +0,0 @@
-import { FC, useState, useRef, useEffect } from 'react';
-import { FilterOutlined } from '@ant-design/icons';
-import INDONESIAN_CITIES from '../constants/cities';
-
-interface CityFilterSelectProps {
-  value: string;
-  onChange: (value: string) => void;
-  className?: string;
-  placeholder?: string;
-  allOptionLabel?: string;
-  filterIcon?: boolean;
-}
-
-export const CityFilterSelect: FC<CityFilterSelectProps> = ({
-  value,
-  onChange,
-  className = '',
-  placeholder = 'Search cities...',
-  allOptionLabel = 'All Cities',
-  filterIcon = true,
-}) => {
-  const [isOpen, setIsOpen] = useState(false);
-  const [searchQuery, setSearchQuery] = useState('');
-  const dropdownRef = useRef<HTMLDivElement>(null);
-  const inputRef = useRef<HTMLInputElement>(null);
-
-  // Filter cities based on search query
-  const filteredCities = INDONESIAN_CITIES.filter((city) =>
-    city.toLowerCase().includes(searchQuery.toLowerCase())
-  );
-
-  // Close dropdown when clicking outside
-  useEffect(() => {
-    const handleClickOutside = (event: MouseEvent) => {
-      if (
-        dropdownRef.current &&
-        !dropdownRef.current.contains(event.target as Node)
-      ) {
-        setIsOpen(false);
-        setSearchQuery('');
-      }
-    };
-
-    document.addEventListener('mousedown', handleClickOutside);
-    return () => document.removeEventListener('mousedown', handleClickOutside);
-  }, []);
-
-  const handleSelectCity = (city: string) => {
-    onChange(city);
-    setSearchQuery('');
-    setIsOpen(false);
-  };
-
-  const handleInputClick = () => {
-    setIsOpen(true);
-    setSearchQuery('');
-  };
-
-  const handleClearSelection = () => {
-    onChange('all');
-    setSearchQuery('');
-    setIsOpen(false);
-  };
-
-  const displayValue = value === 'all' ? allOptionLabel : value;
-  const showClearButton = value !== 'all' && !isOpen;
-
-  return (
-    <div className={`relative ${className}`} ref={dropdownRef}>
-      <div className="relative">
-        {filterIcon && (
-          <FilterOutlined className="absolute left-3 top-1/2 transform -translate-y-1/2 text-neutral-400 text-sm pointer-events-none z-10" />
-        )}
-        <input
-          ref={inputRef}
-          type="text"
-          value={isOpen ? searchQuery : displayValue}
-          onChange={(e) => {
-            setSearchQuery(e.target.value);
-            if (!isOpen) setIsOpen(true);
-          }}
-          onClick={handleInputClick}
-          onFocus={handleInputClick}
-          placeholder={isOpen ? placeholder : displayValue}
-          className={`border border-neutral-200 rounded-lg pr-10 py-2.5 text-sm w-full focus:border-primary-500 focus:outline-none appearance-none bg-white cursor-pointer ${
-            filterIcon ? ' pl-10' : 'pl-3'
-          }`}
-        />
-        {showClearButton && (
-          <button
-            type="button"
-            onClick={(e) => {
-              e.stopPropagation();
-              handleClearSelection();
-            }}
-            className="absolute right-3 top-1/2 -translate-y-1/2 text-neutral-400 hover:text-neutral-600 text-xs cursor-pointer z-20"
-          >
-            ✕
-          </button>
-        )}
-      </div>
-
-      {isOpen && (
-        <div className="absolute z-50 w-full mt-1 bg-white border border-neutral-200 rounded-lg shadow-lg max-h-60 overflow-y-auto">
-          {/* All Cities Option */}
-          <div
-            onClick={() => handleSelectCity('all')}
-            className={`px-3 py-2 cursor-pointer hover:bg-neutral-50 border-b border-neutral-100 ${
-              value === 'all'
-                ? 'bg-primary-50 text-primary-700 font-medium'
-                : 'text-neutral-900'
-            }`}
-          >
-            {allOptionLabel}
-          </div>
-
-          {/* Filtered Cities */}
-          {filteredCities.length > 0 ? (
-            <div className="py-1">
-              {filteredCities.slice(0, 100).map((city) => (
-                <div
-                  key={city}
-                  onClick={() => handleSelectCity(city)}
-                  className={`px-3 py-2 cursor-pointer hover:bg-neutral-50 text-sm ${
-                    value === city
-                      ? 'bg-primary-50 text-primary-700 font-medium'
-                      : 'text-neutral-700'
-                  }`}
-                >
-                  {city}
-                </div>
-              ))}
-              {filteredCities.length > 100 && (
-                <div className="px-3 py-2 text-xs text-neutral-500 border-t border-neutral-100">
-                  Showing first 100 results. Continue typing to refine...
-                </div>
-              )}
-            </div>
-          ) : searchQuery ? (
-            <div className="px-3 py-2 text-neutral-500 text-sm">
-              No cities found matching "{searchQuery}"
-            </div>
-          ) : null}
-        </div>
-      )}
-    </div>
-  );
-};

apps/backoffice/src/constants/cities.ts

@@ -1,518 +0,0 @@
-const INDONESIAN_CITIES: string[] = [
-  'Aceh Selatan',
-  'Aceh Tenggara',
-  'Aceh Timur',
-  'Aceh Tengah',
-  'Aceh Barat',
-  'Aceh Besar',
-  'Pidie',
-  'Aceh Utara',
-  'Simeulue',
-  'Aceh Singkil',
-  'Bireuen',
-  'Aceh Barat Daya',
-  'Gayo Lues',
-  'Aceh Jaya',
-  'Nagan Raya',
-  'Aceh Tamiang',
-  'Bener Meriah',
-  'Pidie Jaya',
-  'Kota Banda Aceh',
-  'Kota Sabang',
-  'Kota Lhokseumawe',
-  'Kota Langsa',
-  'Kota Subulussalam',
-  'Tapanuli Tengah',
-  'Tapanuli Utara',
-  'Tapanuli Selatan',
-  'Nias',
-  'Langkat',
-  'Karo',
-  'Deli Serdang',
-  'Simalungun',
-  'Asahan',
-  'Labuhanbatu',
-  'Dairi',
-  'Toba',
-  'Mandailing Natal',
-  'Nias Selatan',
-  'Pakpak Bharat',
-  'Humbang Hasundutan',
-  'Samosir',
-  'Serdang Bedagai',
-  'Batu Bara',
-  'Padang Lawas Utara',
-  'Padang Lawas',
-  'Labuhanbatu Selatan',
-  'Labuhanbatu Utara',
-  'Nias Utara',
-  'Nias Barat',
-  'Kota Medan',
-  'Kota Pematangsiantar',
-  'Kota Sibolga',
-  'Kota Tanjung Balai',
-  'Kota Binjai',
-  'Kota Tebing Tinggi',
-  'Kota Padangsidimpuan',
-  'Kota Gunungsitoli',
-  'Pesisir Selatan',
-  'Solok',
-  'Sijunjung',
-  'Tanah Datar',
-  'Padang Pariaman',
-  'Agam',
-  'Lima Puluh Kota',
-  'Pasaman',
-  'Kepulauan Mentawai',
-  'Dharmasraya',
-  'Solok Selatan',
-  'Pasaman Barat',
-  'Kota Padang',
-  'Kota Solok',
-  'Kota Sawahlunto',
-  'Kota Padang Panjang',
-  'Kota Bukittinggi',
-  'Kota Payakumbuh',
-  'Kota Pariaman',
-  'Kampar',
-  'Indragiri Hulu',
-  'Bengkalis',
-  'Indragiri Hilir',
-  'Pelalawan',
-  'Rokan Hulu',
-  'Rokan Hilir',
-  'Siak',
-  'Kuantan Singingi',
-  'Kepulauan Meranti',
-  'Kota Pekanbaru',
-  'Kota Dumai',
-  'Kerinci',
-  'Merangin',
-  'Sarolangun',
-  'Batanghari',
-  'Muaro Jambi',
-  'Tanjung Jabung Barat',
-  'Tanjung Jabung Timur',
-  'Bungo',
-  'Tebo',
-  'Kota Jambi',
-  'Kota Sungai Penuh',
-  'Ogan Komering Ulu',
-  'Ogan Komering Ilir',
-  'Muara Enim',
-  'Lahat',
-  'Musi Rawas',
-  'Musi Banyuasin',
-  'Banyuasin',
-  'Ogan Komering Ulu Timur',
-  'Ogan Komering Ulu Selatan',
-  'Ogan Ilir',
-  'Empat Lawang',
-  'Penukal Abab Lematang Ilir',
-  'Musi Rawas Utara',
-  'Kota Palembang',
-  'Kota Pagar Alam',
-  'Kota Lubuk Linggau',
-  'Kota Prabumulih',
-  'Bengkulu Selatan',
-  'Rejang Lebong',
-  'Bengkulu Utara',
-  'Kaur',
-  'Seluma',
-  'Muko Muko',
-  'Lebong',
-  'Kepahiang',
-  'Bengkulu Tengah',
-  'Kota Bengkulu',
-  'Lampung Selatan',
-  'Lampung Tengah',
-  'Lampung Utara',
-  'Lampung Barat',
-  'Tulang Bawang',
-  'Tanggamus',
-  'Lampung Timur',
-  'Way Kanan',
-  'Pesawaran',
-  'Pringsewu',
-  'Mesuji',
-  'Tulang Bawang Barat',
-  'Pesisir Barat',
-  'Kota Bandar Lampung',
-  'Kota Metro',
-  'Bangka',
-  'Belitung',
-  'Bangka Selatan',
-  'Bangka Tengah',
-  'Bangka Barat',
-  'Belitung Timur',
-  'Kota Pangkal Pinang',
-  'Bintan',
-  'Karimun',
-  'Natuna',
-  'Lingga',
-  'Kepulauan Anambas',
-  'Kota Batam',
-  'Kota Tanjung Pinang',
-  'Kepulauan Seribu',
-  'Kota Jakarta Pusat',
-  'Kota Jakarta Utara',
-  'Kota Jakarta Barat',
-  'Kota Jakarta Selatan',
-  'Kota Jakarta Timur',
-  'Bogor',
-  'Sukabumi',
-  'Cianjur',
-  'Bandung',
-  'Garut',
-  'Tasikmalaya',
-  'Ciamis',
-  'Kuningan',
-  'Cirebon',
-  'Majalengka',
-  'Sumedang',
-  'Indramayu',
-  'Subang',
-  'Purwakarta',
-  'Karawang',
-  'Bekasi',
-  'Bandung Barat',
-  'Pangandaran',
-  'Kota Bogor',
-  'Kota Sukabumi',
-  'Kota Bandung',
-  'Kota Cirebon',
-  'Kota Bekasi',
-  'Kota Depok',
-  'Kota Cimahi',
-  'Kota Tasikmalaya',
-  'Kota Banjar',
-  'Cilacap',
-  'Banyumas',
-  'Purbalingga',
-  'Banjarnegara',
-  'Kebumen',
-  'Purworejo',
-  'Wonosobo',
-  'Magelang',
-  'Boyolali',
-  'Klaten',
-  'Sukoharjo',
-  'Wonogiri',
-  'Karanganyar',
-  'Sragen',
-  'Grobogan',
-  'Blora',
-  'Rembang',
-  'Pati',
-  'Kudus',
-  'Jepara',
-  'Demak',
-  'Semarang',
-  'Temanggung',
-  'Kendal',
-  'Batang',
-  'Pekalongan',
-  'Pemalang',
-  'Tegal',
-  'Brebes',
-  'Kota Magelang',
-  'Kota Surakarta',
-  'Kota Salatiga',
-  'Kota Semarang',
-  'Kota Pekalongan',
-  'Kota Tegal',
-  'Kulon Progo',
-  'Bantul',
-  'Gunungkidul',
-  'Sleman',
-  'Kota Yogyakarta',
-  'Pacitan',
-  'Ponorogo',
-  'Trenggalek',
-  'Tulungagung',
-  'Blitar',
-  'Kediri',
-  'Malang',
-  'Lumajang',
-  'Jember',
-  'Banyuwangi',
-  'Bondowoso',
-  'Situbondo',
-  'Probolinggo',
-  'Pasuruan',
-  'Sidoarjo',
-  'Mojokerto',
-  'Jombang',
-  'Nganjuk',
-  'Madiun',
-  'Magetan',
-  'Ngawi',
-  'Bojonegoro',
-  'Tuban',
-  'Lamongan',
-  'Gresik',
-  'Bangkalan',
-  'Sampang',
-  'Pamekasan',
-  'Sumenep',
-  'Kota Kediri',
-  'Kota Blitar',
-  'Kota Malang',
-  'Kota Probolinggo',
-  'Kota Pasuruan',
-  'Kota Mojokerto',
-  'Kota Madiun',
-  'Kota Surabaya',
-  'Kota Batu',
-  'Pandeglang',
-  'Lebak',
-  'Tangerang',
-  'Serang',
-  'Kota Tangerang',
-  'Kota Cilegon',
-  'Kota Serang',
-  'Kota Tangerang Selatan',
-  'Jembrana',
-  'Tabanan',
-  'Badung',
-  'Gianyar',
-  'Klungkung',
-  'Bangli',
-  'Karangasem',
-  'Buleleng',
-  'Kota Denpasar',
-  'Lombok Barat',
-  'Lombok Tengah',
-  'Lombok Timur',
-  'Sumbawa',
-  'Dompu',
-  'Bima',
-  'Sumbawa Barat',
-  'Lombok Utara',
-  'Kota Mataram',
-  'Kota Bima',
-  'Kupang',
-  'Timor Tengah Selatan',
-  'Timor Tengah Utara',
-  'Belu',
-  'Alor',
-  'Flores Timur',
-  'Sikka',
-  'Ende',
-  'Ngada',
-  'Manggarai',
-  'Sumba Timur',
-  'Sumba Barat',
-  'Lembata',
-  'Rote Ndao',
-  'Manggarai Barat',
-  'Nagekeo',
-  'Sumba Tengah',
-  'Sumba Barat Daya',
-  'Manggarai Timur',
-  'Sabu Raijua',
-  'Malaka',
-  'Kota Kupang',
-  'Sambas',
-  'Mempawah',
-  'Sanggau',
-  'Ketapang',
-  'Sintang',
-  'Kapuas Hulu',
-  'Bengkayang',
-  'Landak',
-  'Sekadau',
-  'Melawi',
-  'Kayong Utara',
-  'Kubu Raya',
-  'Kota Pontianak',
-  'Kota Singkawang',
-  'Kotawaringin Barat',
-  'Kotawaringin Timur',
-  'Kapuas',
-  'Barito Selatan',
-  'Barito Utara',
-  'Katingan',
-  'Seruyan',
-  'Sukamara',
-  'Lamandau',
-  'Gunung Mas',
-  'Pulang Pisau',
-  'Murung Raya',
-  'Barito Timur',
-  'Kota Palangkaraya',
-  'Tanah Laut',
-  'Kotabaru',
-  'Banjar',
-  'Barito Kuala',
-  'Tapin',
-  'Hulu Sungai Selatan',
-  'Hulu Sungai Tengah',
-  'Hulu Sungai Utara',
-  'Tabalong',
-  'Tanah Bumbu',
-  'Balangan',
-  'Kota Banjarmasin',
-  'Kota Banjarbaru',
-  'Paser',
-  'Kutai Kartanegara',
-  'Berau',
-  'Kutai Barat',
-  'Kutai Timur',
-  'Penajam Paser Utara',
-  'Mahakam Ulu',
-  'Kota Balikpapan',
-  'Kota Samarinda',
-  'Kota Bontang',
-  'Bulungan',
-  'Malinau',
-  'Nunukan',
-  'Tana Tidung',
-  'Kota Tarakan',
-  'Bolaang Mongondow',
-  'Minahasa',
-  'Kepulauan Sangihe',
-  'Kepulauan Talaud',
-  'Minahasa Selatan',
-  'Minahasa Utara',
-  'Minahasa Tenggara',
-  'Bolaang Mongondow Utara',
-  'Kepulauan Siau Tagulandang Biaro (Sitaro)',
-  'Bolaang Mongondow Timur',
-  'Bolaang Mongondow Selatan',
-  'Kota Manado',
-  'Kota Bitung',
-  'Kota Tomohon',
-  'Kota Kotamobagu',
-  'Banggai',
-  'Poso',
-  'Donggala',
-  'Toli Toli',
-  'Buol',
-  'Morowali',
-  'Banggai Kepulauan',
-  'Parigi Moutong',
-  'Tojo Una Una',
-  'Sigi',
-  'Banggai Laut',
-  'Morowali Utara',
-  'Kota Palu',
-  'Kepulauan Selayar',
-  'Bulukumba',
-  'Bantaeng',
-  'Jeneponto',
-  'Takalar',
-  'Gowa',
-  'Sinjai',
-  'Bone',
-  'Maros',
-  'Pangkajene Kepulauan',
-  'Barru',
-  'Soppeng',
-  'Wajo',
-  'Sidenreng Rappang',
-  'Pinrang',
-  'Enrekang',
-  'Luwu',
-  'Tana Toraja',
-  'Luwu Utara',
-  'Luwu Timur',
-  'Toraja Utara',
-  'Kota Makassar',
-  'Kota Pare Pare',
-  'Kota Palopo',
-  'Kolaka',
-  'Konawe',
-  'Muna',
-  'Buton',
-  'Konawe Selatan',
-  'Bombana',
-  'Wakatobi',
-  'Kolaka Utara',
-  'Konawe Utara',
-  'Buton Utara',
-  'Kolaka Timur',
-  'Konawe Kepulauan',
-  'Muna Barat',
-  'Buton Tengah',
-  'Buton Selatan',
-  'Kota Kendari',
-  'Kota Bau Bau',
-  'Gorontalo',
-  'Boalemo',
-  'Bone Bolango',
-  'Pahuwato',
-  'Gorontalo Utara',
-  'Kota Gorontalo',
-  'Pasangkayu (Mamuju Utara)',
-  'Mamuju',
-  'Mamasa',
-  'Polewali Mandar',
-  'Majene',
-  'Mamuju Tengah',
-  'Maluku Tengah',
-  'Maluku Tenggara',
-  'Kepulauan Tanimbar (Maluku Tenggara Barat)',
-  'Buru',
-  'Seram Bagian Timur',
-  'Seram Bagian Barat',
-  'Kepulauan Aru',
-  'Maluku Barat Daya',
-  'Buru Selatan',
-  'Kota Ambon',
-  'Kota Tual',
-  'Halmahera Barat',
-  'Halmahera Tengah',
-  'Halmahera Utara',
-  'Halmahera Selatan',
-  'Kepulauan Sula',
-  'Halmahera Timur',
-  'Pulau Morotai',
-  'Pulau Taliabu',
-  'Kota Ternate',
-  'Kota Tidore Kepulauan',
-  'Jayapura',
-  'Kepulauan Yapen',
-  'Biak Numfor',
-  'Sarmi',
-  'Keerom',
-  'Waropen',
-  'Supiori',
-  'Mamberamo Raya',
-  'Kota Jayapura',
-  'Manokwari',
-  'Fak Fak',
-  'Teluk Bintuni',
-  'Teluk Wondama',
-  'Kaimana',
-  'Manokwari Selatan',
-  'Pegunungan Arfak',
-  'Merauke',
-  'Boven Digoel',
-  'Mappi',
-  'Asmat',
-  'Nabire',
-  'Puncak Jaya',
-  'Paniai',
-  'Mimika',
-  'Puncak',
-  'Dogiyai',
-  'Intan Jaya',
-  'Deiyai',
-  'Jayawijaya',
-  'Pegunungan Bintang',
-  'Yahukimo',
-  'Tolikara',
-  'Mamberamo Tengah',
-  'Yalimo',
-  'Lanny Jaya',
-  'Nduga',
-  'Sorong',
-  'Sorong Selatan',
-  'Raja Ampat',
-  'Tambrauw',
-  'Maybrat',
-  'Kota Sorong',
-];
-
-export default INDONESIAN_CITIES;

apps/hackathon/src/app/certificate/[certId]/page.tsx

@@ -0,0 +1,517 @@
+import { FC, ReactElement, useState, useEffect, useRef } from 'react';
+import { useParams, useNavigate } from 'react-router';
+import { Button } from '@imphnen-frontend-service/ui/atoms';
+import { decodeCertificateId } from '../../../utils/certificate';
+import {
+  useTeamById,
+  useTeamSubmission,
+  useAuthStore,
+} from '@imphnen-frontend-service/service';
+import QRCode from 'qrcode';
+import html2canvas from 'html2canvas';
+
+interface DecodedCert {
+  teamId: string;
+  submissionId: string;
+}
+
+const CertificatePage: FC = (): ReactElement => {
+  const { certId } = useParams<{ certId: string }>();
+  const navigate = useNavigate();
+  const { session } = useAuthStore();
+  const [decodedInfo, setDecodedInfo] = useState<DecodedCert | null>(null);
+  const [error, setError] = useState<string | null>(null);
+  const teamNameRef = useRef<HTMLHeadingElement>(null);
+  const userNameRef = useRef<HTMLHeadingElement>(null);
+  const [teamNameFontSize, setTeamNameFontSize] = useState('2.25rem');
+  const [userNameFontSize, setUserNameFontSize] = useState('2.25rem');
+  const [qrCodeUrl, setQrCodeUrl] = useState<string>('');
+  const certificateRef = useRef<HTMLDivElement>(null);
+  const [isGenerating, setIsGenerating] = useState(false);
+  const [certificateImage, setCertificateImage] = useState<string>('');
+  const [showTemplate, setShowTemplate] = useState(true);
+
+  useEffect(() => {
+    if (certId) {
+      decodeCertificateId(certId)
+        .then(setDecodedInfo)
+        .catch(() => {
+          setError('Invalid certificate ID');
+        });
+    }
+  }, [certId]);
+
+  // Generate QR Code
+  useEffect(() => {
+    if (certId) {
+      const certificateUrl = `${window.location.origin}/certificate/${certId}`;
+      QRCode.toDataURL(certificateUrl, {
+        width: 200,
+        margin: 1,
+        color: {
+          dark: '#000000',
+          light: '#ffffff',
+        },
+      })
+        .then(setQrCodeUrl)
+        .catch((err) => console.error('QR Code generation failed:', err));
+    }
+  }, [certId]);
+
+  const { data: teamData, isLoading: isLoadingTeam } = useTeamById(
+    decodedInfo?.teamId || '',
+    !!decodedInfo?.teamId
+  );
+  const { data: submissionData, isLoading: isLoadingSubmission } =
+    useTeamSubmission(decodedInfo?.teamId || '', !!decodedInfo?.teamId);
+
+  const team = teamData?.data;
+  const submission = submissionData?.data;
+
+  const isLoading =
+    (!decodedInfo && !error) || isLoadingTeam || isLoadingSubmission;
+
+  // Dynamic font sizing: shrink by 2px if height exceeds 80px
+  useEffect(() => {
+    const adjustFontSize = (
+      element: HTMLElement | null,
+      maxHeight: number,
+      startSize: number,
+      setter: (size: string) => void
+    ) => {
+      if (!element) return;
+
+      let currentSize = startSize;
+      element.style.fontSize = `${currentSize}px`;
+
+      while (element.offsetHeight > maxHeight && currentSize > 1) {
+        currentSize -= 2;
+        element.style.fontSize = `${currentSize}px`;
+      }
+
+      setter(`${currentSize}px`);
+    };
+
+    const timer = setTimeout(() => {
+      adjustFontSize(teamNameRef.current, 80, 20, setTeamNameFontSize);
+      adjustFontSize(userNameRef.current, 80, 36, setUserNameFontSize);
+    }, 0);
+
+    return () => clearTimeout(timer);
+  }, [team?.name, session?.user?.fullname]);
+
+  // Generate certificate canvas screenshot
+  useEffect(() => {
+    const generateCertificate = async () => {
+      if (!certificateRef.current || !team || !submission || !qrCodeUrl) return;
+
+      setIsGenerating(true);
+      try {
+        // Wait a bit for fonts and images to load
+        await new Promise((resolve) => setTimeout(resolve, 500));
+
+        const canvas = await html2canvas(certificateRef.current, {
+          scale: 2,
+          useCORS: true,
+          backgroundColor: '#ffffff',
+          logging: false,
+          width: 1000,
+          height: (1000 * 2480) / 3508,
+        });
+
+        const imageUrl = canvas.toDataURL('image/png');
+        setCertificateImage(imageUrl);
+        setShowTemplate(false);
+      } catch (error) {
+        console.error('Failed to generate certificate:', error);
+      } finally {
+        setIsGenerating(false);
+      }
+    };
+
+    generateCertificate();
+  }, [team, submission, qrCodeUrl, session?.user?.fullname]);
+
+  // Download certificate
+  const handleDownloadCertificate = () => {
+    if (!certificateImage) return;
+
+    const link = document.createElement('a');
+    link.href = certificateImage;
+    link.download = `certificate-${team?.name || 'hackathon'}.png`;
+    link.click();
+  };
+
+  // Print certificate
+  const handlePrintCertificate = () => {
+    if (!certificateImage) return;
+
+    const printWindow = window.open('', '_blank');
+    if (printWindow) {
+      printWindow.document.write(`
+        <html>
+          <head>
+            <title>Certificate - ${team?.name}</title>
+            <style>
+              body { margin: 0; display: flex; justify-content: center; align-items: center; min-height: 100vh; }
+              img { max-width: 100%; height: auto; }
+              @media print {
+                @page { size: A4 landscape; margin: 0; }
+                body { margin: 0; }
+                img { width: 100%; height: auto; }
+              }
+            </style>
+          </head>
+          <body>
+            <img src="${certificateImage}" />
+          </body>
+        </html>
+      `);
+      printWindow.document.close();
+      printWindow.onload = () => {
+        printWindow.print();
+      };
+    }
+  };
+
+  if (error || !certId) {
+    return (
+      <div className="flex flex-col items-center justify-center min-h-screen bg-gray-50 dark:bg-gray-950">
+        <div className="text-6xl mb-4">❌</div>
+        <h2 className="text-2xl font-bold text-gray-900 dark:text-white mb-4">
+          Invalid Certificate
+        </h2>
+        <p className="text-gray-600 dark:text-gray-400 mb-6">
+          {error || 'The certificate ID is invalid or malformed.'}
+        </p>
+        <Button onClick={() => navigate('/')}>Back to Home</Button>
+      </div>
+    );
+  }
+
+  if (isLoading) {
+    return (
+      <div className="flex items-center justify-center min-h-screen bg-gray-50 dark:bg-gray-950">
+        <div className="text-center">
+          <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-600 mx-auto mb-4"></div>
+          <div className="text-gray-600 dark:text-gray-400">
+            Loading certificate...
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+  if (!submission || submission.id !== decodedInfo?.submissionId) {
+    return (
+      <div className="flex flex-col items-center justify-center min-h-screen bg-gray-50 dark:bg-gray-950">
+        <div className="text-6xl mb-4">📄</div>
+        <h2 className="text-2xl font-bold text-gray-900 dark:text-white mb-4">
+          Certificate Not Found
+        </h2>
+        <p className="text-gray-600 dark:text-gray-400 mb-6">
+          The submission associated with this certificate could not be found.
+        </p>
+        <Button onClick={() => navigate('/')}>Back to Home</Button>
+      </div>
+    );
+  }
+
+  return (
+    <div className="min-h-screen bg-gray-50 dark:bg-gray-950">
+      {/* Print Styles */}
+      <style>{`
+        @media print {
+          @page {
+            size: A4 landscape;
+            margin: 0;
+          }
+          body {
+            margin: 0;
+            padding: 0;
+          }
+          body * {
+            visibility: hidden;
+          }
+          #certificate-wrapper {
+            visibility: visible;
+            position: absolute;
+            left: 0;
+            top: 0;
+            width: 100%;
+            height: 100%;
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            background: white;
+          }
+          #certificate, #certificate * {
+            visibility: visible;
+          }
+          #certificate {
+            position: relative;
+            max-width: 100%;
+            page-break-after: avoid;
+          }
+          .no-print {
+            display: none !important;
+          }
+        }
+
+        /* Mobile responsive - zoom out to fit */
+        @media (max-width: 768px) {
+          #certificate-container {
+            transform-origin: top center;
+          }
+        }
+      `}</style>
+
+      {/* Header */}
+      <div className="bg-white dark:bg-gray-900 border-b dark:border-gray-700 no-print">
+        <div className="max-w-6xl mx-auto px-4 sm:px-6 lg:px-8 py-6">
+          <div className="flex items-center justify-between">
+            <div>
+              <h1 className="text-3xl font-bold text-gray-900 dark:text-white">
+                Certificate
+              </h1>
+              <p className="text-gray-600 dark:text-gray-400 mt-1">
+                {team?.name}
+              </p>
+            </div>
+            <Button
+              variant="secondary"
+              onClick={() =>
+                navigate(`/teams/${decodedInfo?.teamId}/submission`)
+              }
+            >
+              Back to Submission
+            </Button>
+          </div>
+        </div>
+      </div>
+
+      {/* Certificate Content */}
+      <div
+        className="max-w-6xl mx-auto px-4 sm:px-6 lg:px-8 py-12"
+        id="certificate-wrapper"
+      >
+        {/* Hidden Template for Canvas Generation */}
+        <div
+          className={showTemplate ? 'block' : 'hidden'}
+          style={{ position: 'absolute', left: '-9999px' }}
+        >
+          <div
+            ref={certificateRef}
+            id="certificate-template"
+            style={{
+              position: 'relative',
+              backgroundImage: 'url(/images/blank_cert.png)',
+              backgroundSize: 'cover',
+              backgroundPosition: 'center',
+              width: '1000px',
+              height: `${(1000 * 2480) / 3508}px`,
+            }}
+          >
+            {/* User Name (from session) */}
+            <div
+              style={{
+                position: 'absolute',
+                top: '40%',
+                left: '50%',
+                transform: 'translateX(-50%)',
+                width: '80%',
+              }}
+            >
+              <h3
+                ref={userNameRef}
+                style={{
+                  fontWeight: 'bold',
+                  color: '#111827',
+                  textAlign: 'center',
+                  fontSize: userNameFontSize,
+                  lineHeight: '1.2',
+                  wordBreak: 'break-word',
+                  textShadow: '0 1px 2px rgba(0,0,0,0.1)',
+                  margin: 0,
+                }}
+              >
+                {session?.user?.fullname || 'N/A'}
+              </h3>
+            </div>
+
+            {/* Team Name */}
+            <div
+              style={{
+                position: 'absolute',
+                top: '46%',
+                left: '50%',
+                transform: 'translateX(-50%)',
+                width: '70%',
+              }}
+            >
+              <h3
+                ref={teamNameRef}
+                style={{
+                  fontWeight: '600',
+                  color: '#1f2937',
+                  textAlign: 'center',
+                  fontSize: teamNameFontSize,
+                  lineHeight: '1.2',
+                  wordBreak: 'break-word',
+                  margin: 0,
+                }}
+              >
+                {team?.name}
+              </h3>
+            </div>
+
+            {/* Participation Text */}
+            <div
+              style={{
+                position: 'absolute',
+                top: '60%',
+                left: '50%',
+                transform: 'translateX(-50%)',
+                width: '70%',
+              }}
+            >
+              <p
+                style={{
+                  textAlign: 'center',
+                  color: '#374151',
+                  fontSize: '18px',
+                  fontWeight: '500',
+                  margin: 0,
+                }}
+              >
+                <span style={{ fontWeight: 'bold' }}>
+                  Peserta Hackathon IMPHNEN x KOLOSAL AI
+                </span>
+              </p>
+            </div>
+
+            {/* QR Code */}
+            <div
+              style={{
+                position: 'absolute',
+                bottom: '8%',
+                left: '8%',
+              }}
+            >
+              {qrCodeUrl && (
+                <div
+                  style={{
+                    backgroundColor: '#ffffff',
+                    padding: '8px',
+                    borderRadius: '4px',
+                    boxShadow: '0 4px 6px rgba(0,0,0,0.1)',
+                  }}
+                >
+                  <img
+                    src={qrCodeUrl}
+                    alt="Certificate QR Code"
+                    style={{ width: '96px', height: '96px' }}
+                  />
+                </div>
+              )}
+            </div>
+
+            {/* Date */}
+            <div
+              style={{
+                position: 'absolute',
+                bottom: '8%',
+                right: '8%',
+              }}
+            >
+              <p
+                style={{
+                  fontSize: '14px',
+                  color: '#374151',
+                  margin: 0,
+                }}
+              >
+                {submission.submitted_at
+                  ? new Date(submission.submitted_at).toLocaleDateString(
+                      'id-ID',
+                      {
+                        day: 'numeric',
+                        month: 'long',
+                        year: 'numeric',
+                      }
+                    )
+                  : 'N/A'}
+              </p>
+            </div>
+          </div>
+        </div>
+
+        {/* Display Certificate Image */}
+        <div className="bg-white dark:bg-gray-900 rounded-lg shadow-xl dark:shadow-gray-950/50 overflow-hidden p-2">
+          {isGenerating && (
+            <div className="flex items-center justify-center p-12">
+              <div className="text-center">
+                <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-600 mx-auto mb-4"></div>
+                <div className="text-gray-600 dark:text-gray-400">
+                  Generating certificate...
+                </div>
+              </div>
+            </div>
+          )}
+
+          {certificateImage && !isGenerating && (
+            <img
+              src={certificateImage}
+              alt="Certificate"
+              className="w-full h-auto"
+              style={{ maxWidth: '100%', height: 'auto' }}
+            />
+          )}
+
+          {/* Actions */}
+          <div className="bg-gray-50 dark:bg-gray-800 p-6 grid grid-cols-2 xl:grid-cols-3 gap-3 justify-center no-print">
+            <Button
+              variant="secondary"
+              onClick={handleDownloadCertificate}
+              className="flex items-center gap-2"
+              disabled={isGenerating}
+            >
+              {isGenerating ? '⏳ Generating...' : '📥 Download'}
+            </Button>
+            <Button
+              variant="secondary"
+              onClick={handlePrintCertificate}
+              className="flex items-center gap-2"
+              disabled={isGenerating}
+            >
+              {isGenerating ? '⏳ Generating...' : '🖨️ Print'}
+            </Button>
+            <Button
+              onClick={() =>
+                navigate(`/teams/${decodedInfo?.teamId}/submission`)
+              }
+              variant="secondary"
+              className="col-span-2 flex items-center gap-2 xl:col-span-1"
+            >
+              View Submission
+            </Button>
+          </div>
+        </div>
+
+        {/* Info Box */}
+        <div className="mt-8 bg-blue-50 dark:bg-blue-900/20 border border-blue-200 dark:border-blue-800 rounded-lg p-6 no-print">
+          <h3 className="font-bold text-blue-900 dark:text-blue-100 mb-2">
+            Certificate Information
+          </h3>
+          <p className="text-sm text-blue-800 dark:text-blue-200">
+            This certificate is a digital record of your hackathon participation
+            and project submission. You can print or save this page as a PDF for
+            your records.
+          </p>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default CertificatePage;

apps/hackathon/src/app/dashboard/page.tsx

@@ -14,6 +14,9 @@ import ProfilePage from '../profile/page';
 // Team features deadline: 2025-11-30 23:59:00 WIB (UTC+7)
 const TEAM_FEATURES_DEADLINE = new Date('2025-11-30T16:59:00Z');
 
+// Submission deadline: 2025-12-07 23:59:00 WIB (UTC+7)
+const SUBMISSION_DEADLINE = new Date('2025-12-07T16:59:00Z');
+
 type Invitation = {
   id: string;
   team: {
@@ -37,9 +40,46 @@ type Invitation = {
 const DashboardPage: FC = (): ReactElement => {
   const { session } = useAuthStore();
   const [showProfileModal, setShowProfileModal] = useState(false);
+  const [timeLeft, setTimeLeft] = useState<{
+    days: number;
+    hours: number;
+    minutes: number;
+    seconds: number;
+  } | null>(null);
 
   // Check if team features are closed
   const isTeamFeaturesClosed = new Date() >= TEAM_FEATURES_DEADLINE;
+
+  // Check if submission deadline passed
+  const isSubmissionDeadlinePassed = new Date() >= SUBMISSION_DEADLINE;
+
+  // Countdown timer
+  useEffect(() => {
+    if (isSubmissionDeadlinePassed) return;
+
+    const calculateTimeLeft = () => {
+      const now = new Date();
+      const difference = SUBMISSION_DEADLINE.getTime() - now.getTime();
+
+      if (difference <= 0) {
+        setTimeLeft(null);
+        return;
+      }
+
+      const days = Math.floor(difference / (1000 * 60 * 60 * 24));
+      const hours = Math.floor((difference / (1000 * 60 * 60)) % 24);
+      const minutes = Math.floor((difference / 1000 / 60) % 60);
+      const seconds = Math.floor((difference / 1000) % 60);
+
+      setTimeLeft({ days, hours, minutes, seconds });
+    };
+
+    calculateTimeLeft();
+    const timer = setInterval(calculateTimeLeft, 1000);
+
+    return () => clearInterval(timer);
+  }, [isSubmissionDeadlinePassed]);
+
   // Lock background scroll when profile modal is open
   useEffect(() => {
     if (showProfileModal) {
@@ -94,6 +134,57 @@ const DashboardPage: FC = (): ReactElement => {
           )}
         </div>
 
+        {/* Countdown Timer */}
+        {timeLeft && !isSubmissionDeadlinePassed && (
+          <div className="mb-8 bg-blue-50 dark:bg-blue-900/20 border-2 border-blue-500 rounded-lg p-6">
+            <div className="flex items-start space-x-3">
+              <span className="text-3xl">⏰</span>
+              <div className="flex-1">
+                <h3 className="font-bold text-blue-900 dark:text-blue-100 text-lg">
+                  Submission Deadline
+                </h3>
+                <p className="text-blue-800 dark:text-blue-200 mt-2 text-sm font-sans">
+                  Project submissions close on December 7, 2025 at 23:59 WIB
+                </p>
+                <div className="mt-4 grid grid-cols-4 gap-4">
+                  <div className="bg-white dark:bg-gray-800 rounded-lg p-3 text-center">
+                    <div className="text-2xl font-bold text-blue-600 dark:text-blue-400">
+                      {timeLeft.days}
+                    </div>
+                    <div className="text-xs text-gray-600 dark:text-gray-400 mt-1">
+                      Days
+                    </div>
+                  </div>
+                  <div className="bg-white dark:bg-gray-800 rounded-lg p-3 text-center">
+                    <div className="text-2xl font-bold text-blue-600 dark:text-blue-400">
+                      {timeLeft.hours.toString().padStart(2, '0')}
+                    </div>
+                    <div className="text-xs text-gray-600 dark:text-gray-400 mt-1">
+                      Hours
+                    </div>
+                  </div>
+                  <div className="bg-white dark:bg-gray-800 rounded-lg p-3 text-center">
+                    <div className="text-2xl font-bold text-blue-600 dark:text-blue-400">
+                      {timeLeft.minutes.toString().padStart(2, '0')}
+                    </div>
+                    <div className="text-xs text-gray-600 dark:text-gray-400 mt-1">
+                      Minutes
+                    </div>
+                  </div>
+                  <div className="bg-white dark:bg-gray-800 rounded-lg p-3 text-center">
+                    <div className="text-2xl font-bold text-blue-600 dark:text-blue-400">
+                      {timeLeft.seconds.toString().padStart(2, '0')}
+                    </div>
+                    <div className="text-xs text-gray-600 dark:text-gray-400 mt-1">
+                      Seconds
+                    </div>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </div>
+        )}
+
         {invitations.length > 0 && (
           <div className="mb-8 bg-primary-50 dark:bg-blue-900/20 border border-primary-200 dark:border-blue-800 rounded-lg p-6">
             <h2 className="text-xl font-bold text-gray-900 dark:text-white mb-4">

apps/hackathon/src/app/teams/[teamId]/submission/page.tsx

@@ -2,6 +2,7 @@ import { FC, ReactElement } from 'react';
 import { Button } from '@imphnen-frontend-service/ui/atoms';
 import { useNavigate, useParams } from 'react-router';
 import { useTeamById, useTeamSubmission } from '@imphnen-frontend-service/service';
+import { encodeCertificateId } from '../../../../utils/certificate';
 
 const SubmissionViewPage: FC = (): ReactElement => {
   const { teamId } = useParams<{ teamId: string }>();
@@ -15,18 +16,18 @@ const SubmissionViewPage: FC = (): ReactElement => {
 
   if (isLoading) {
     return (
-      <div className="flex items-center justify-center min-h-screen bg-gray-50 dark:bg-neutral-950">
-        <div className="text-gray-600 dark:text-neutral-400">Loading submission...</div>
+      <div className="flex items-center justify-center min-h-screen bg-gray-50 dark:bg-gray-950">
+        <div className="text-gray-600 dark:text-gray-400">Loading submission...</div>
       </div>
     );
   }
 
   if (!submission) {
     return (
-      <div className="flex flex-col items-center justify-center min-h-screen bg-gray-50 dark:bg-neutral-950">
+      <div className="flex flex-col items-center justify-center min-h-screen bg-gray-50 dark:bg-gray-950">
         <div className="text-6xl mb-4">📄</div>
         <h2 className="text-2xl font-bold text-gray-900 dark:text-white mb-4">No Submission Yet</h2>
-        <p className="text-gray-600 dark:text-neutral-400 mb-4">Your team hasn't submitted a project</p>
+        <p className="text-gray-600 dark:text-gray-400 mb-4">Your team hasn't submitted a project</p>
         <Button onClick={() => navigate(`/teams/${teamId}`)}>Back to Team</Button>
       </div>
     );
@@ -43,13 +44,13 @@ const SubmissionViewPage: FC = (): ReactElement => {
     : 'Not submitted';
 
   return (
-    <div className="min-h-screen bg-gray-50 dark:bg-neutral-950">
-      <div className="bg-white dark:bg-neutral-900 border-b dark:border-neutral-700">
+    <div className="min-h-screen bg-gray-50 dark:bg-gray-950">
+      <div className="bg-white dark:bg-gray-900 border-b dark:border-gray-700">
         <div className="max-w-6xl mx-auto px-4 sm:px-6 lg:px-8 py-6">
           <div className="flex items-center justify-between">
             <div>
               <h1 className="text-3xl font-bold text-gray-900 dark:text-white">Project Submission</h1>
-              <p className="text-gray-600 dark:text-neutral-400 mt-1">{team?.name}</p>
+              <p className="text-gray-600 dark:text-gray-400 mt-1">{team?.name}</p>
             </div>
             <Button variant="secondary" onClick={() => navigate(`/teams/${teamId}`)}>
               Back to Team
@@ -101,9 +102,37 @@ const SubmissionViewPage: FC = (): ReactElement => {
           </div>
         )}
 
-        <div className="bg-white dark:bg-neutral-900 rounded-lg shadow-md dark:shadow-neutral-950/50 overflow-hidden">
+        {/* Certificate Banner - Only show when submission is submitted */}
+        {submission.status === 'submitted' && (
+          <div className="bg-amber-50 dark:bg-amber-900/20 border-2 border-amber-400 dark:border-amber-500 rounded-lg p-6 mb-6">
+            <div className="flex items-center justify-between flex-wrap gap-4">
+              <div className="flex items-center space-x-3 flex-1 min-w-0">
+                <span className="text-4xl shrink-0">🏆</span>
+                <div className="min-w-0">
+                  <h3 className="font-bold text-amber-900 dark:text-amber-100 text-lg">
+                    View Your Certificate
+                  </h3>
+                  <p className="text-amber-700 dark:text-amber-300 text-sm">
+                    Congratulations! Your certificate is ready to download and share.
+                  </p>
+                </div>
+              </div>
+              <button
+                onClick={async () => {
+                  const certId = await encodeCertificateId(teamId || '', submission.id);
+                  navigate(`/certificate/${encodeURIComponent(certId)}`);
+                }}
+                className="shrink-0 px-6 py-2 bg-amber-600 hover:bg-amber-700 dark:bg-amber-600 dark:hover:bg-amber-700 text-white font-medium rounded-lg transition-colors"
+              >
+                Get Certificate
+              </button>
+            </div>
+          </div>
+        )}
+
+        <div className="bg-white dark:bg-gray-900 rounded-lg shadow-md dark:shadow-gray-950/50 overflow-hidden">
           {/* Project Header */}
-          <div className="bg-gradient-to-r from-blue-600 to-blue-800 text-white p-8">
+          <div className="bg-linear-to-r from-blue-600 to-blue-800 text-white p-8">
             <h2 className="text-3xl font-bold mb-2">{submission.project_name}</h2>
             <p className="text-blue-100">Team: {team?.name}</p>
           </div>
@@ -113,8 +142,8 @@ const SubmissionViewPage: FC = (): ReactElement => {
             {/* Description */}
             <div>
               <h3 className="text-lg font-bold text-gray-900 dark:text-white mb-3">Project Description</h3>
-              <div className="bg-gray-50 dark:bg-neutral-800 rounded-lg p-4">
-                <p className="text-gray-700 dark:text-neutral-300 whitespace-pre-wrap">{submission.description}</p>
+              <div className="bg-gray-50 dark:bg-gray-800 rounded-lg p-4">
+                <p className="text-gray-700 dark:text-gray-300 whitespace-pre-wrap">{submission.description}</p>
               </div>
             </div>
 
@@ -170,7 +199,7 @@ const SubmissionViewPage: FC = (): ReactElement => {
                       <img
                         src={url}
                         alt={`Screenshot ${index + 1}`}
-                        className="w-full h-48 object-cover rounded-lg border-2 border-gray-200 dark:border-neutral-700 hover:border-blue-500 dark:hover:border-primary-500 transition-colors cursor-pointer"
+                        className="w-full h-48 object-cover rounded-lg border-2 border-gray-200 dark:border-gray-700 hover:border-blue-500 dark:hover:border-primary-500 transition-colors cursor-pointer"
                       />
                     </a>
                   ))}
@@ -179,11 +208,11 @@ const SubmissionViewPage: FC = (): ReactElement => {
             )}
 
             {/* Submission Info */}
-            <div className="bg-gray-50 dark:bg-neutral-800 rounded-lg p-4 border-t-4 border-blue-600 dark:border-primary-500">
+            <div className="bg-gray-50 dark:bg-gray-800 rounded-lg p-4 border-t-4 border-blue-600 dark:border-primary-500">
               <h3 className="text-sm font-bold text-gray-900 dark:text-white mb-2">Submission Information</h3>
               <div className="grid gap-2 text-sm">
                 <div className="flex justify-between">
-                  <span className="text-gray-600 dark:text-neutral-400">Status:</span>
+                  <span className="text-gray-600 dark:text-gray-400">Status:</span>
                   <span className={`font-medium ${
                     submission.status === 'submitted'
                       ? 'text-green-600 dark:text-green-400'
@@ -199,11 +228,11 @@ const SubmissionViewPage: FC = (): ReactElement => {
                   </span>
                 </div>
                 <div className="flex justify-between">
-                  <span className="text-gray-600 dark:text-neutral-400">Submitted:</span>
+                  <span className="text-gray-600 dark:text-gray-400">Submitted:</span>
                   <span className="font-medium text-gray-900 dark:text-white">{submittedDate}</span>
                 </div>
                 <div className="flex justify-between">
-                  <span className="text-gray-600 dark:text-neutral-400">Submission ID:</span>
+                  <span className="text-gray-600 dark:text-gray-400">Submission ID:</span>
                   <span className="font-medium text-gray-900 dark:text-white font-mono text-xs">
                     {submission.id}
                   </span>

apps/hackathon/src/app/teams/[teamId]/submit/page.tsx

@@ -1,4 +1,4 @@
-import { FC, ReactElement, useState } from 'react';
+import { FC, ReactElement, useState, useEffect } from 'react';
 import { ControlledInputField } from '@imphnen-frontend-service/ui/organisms';
 import { Button, Textarea } from '@imphnen-frontend-service/ui/atoms';
 import { useNavigate, useParams } from 'react-router';
@@ -14,10 +14,14 @@ import {
 } from '@imphnen-frontend-service/service';
 import { zodResolver } from '@hookform/resolvers/zod';
 import { toast } from 'sonner';
+import { Icon } from '@iconify/react';
 
 const MIN_TEAM_MEMBERS = 2; // Minimum members required to submit (including leader)
 const MAX_FILE_SIZE = 2 * 1024 * 1024; // 2MB
 
+// Submission deadline: 2025-12-07 23:59:00 WIB (UTC+7)
+const SUBMISSION_DEADLINE = new Date('2025-12-07T16:59:00Z');
+
 const SubmitProjectPage: FC = (): ReactElement => {
   const { teamId } = useParams<{ teamId: string }>();
   const navigate = useNavigate();
@@ -25,6 +29,42 @@ const SubmitProjectPage: FC = (): ReactElement => {
   const [showConfirmModal, setShowConfirmModal] = useState(false);
   const [confirmText, setConfirmText] = useState('');
   const [screenshots, setScreenshots] = useState<string[]>([]);
+  const [timeLeft, setTimeLeft] = useState<{
+    days: number;
+    hours: number;
+    minutes: number;
+    seconds: number;
+  } | null>(null);
+
+  // Check if deadline passed
+  const isDeadlinePassed = new Date() >= SUBMISSION_DEADLINE;
+
+  // Countdown timer
+  useEffect(() => {
+    if (isDeadlinePassed) return;
+
+    const calculateTimeLeft = () => {
+      const now = new Date();
+      const difference = SUBMISSION_DEADLINE.getTime() - now.getTime();
+
+      if (difference <= 0) {
+        setTimeLeft(null);
+        return;
+      }
+
+      const days = Math.floor(difference / (1000 * 60 * 60 * 24));
+      const hours = Math.floor((difference / (1000 * 60 * 60)) % 24);
+      const minutes = Math.floor((difference / 1000 / 60) % 60);
+      const seconds = Math.floor((difference / 1000) % 60);
+
+      setTimeLeft({ days, hours, minutes, seconds });
+    };
+
+    calculateTimeLeft();
+    const timer = setInterval(calculateTimeLeft, 1000);
+
+    return () => clearInterval(timer);
+  }, [isDeadlinePassed]);
 
   const { data: teamData } = useTeamById(teamId || '');
   const { data: submissionData } = useTeamSubmission(teamId || '', !!teamId);
@@ -85,6 +125,50 @@ const SubmitProjectPage: FC = (): ReactElement => {
     );
   }
 
+  // Show deadline passed screen
+  if (isDeadlinePassed) {
+    return (
+      <div className="flex justify-center items-center min-h-screen bg-gray-50 dark:bg-gray-950 p-4">
+        <div className="bg-white dark:bg-gray-900 w-full max-w-md p-8 rounded-2xl shadow-lg border border-gray-200 dark:border-gray-700 text-center">
+          <div className="mb-6">
+            <div className="mx-auto w-16 h-16 bg-red-100 dark:bg-red-900/30 rounded-full flex items-center justify-center mb-4">
+              <Icon
+                icon="mdi:clock-alert"
+                className="text-3xl text-red-600 dark:text-red-400"
+              />
+            </div>
+            <h2 className="text-3xl font-bold text-gray-900 dark:text-white mb-2">
+              Submission Closed
+            </h2>
+            <p className="text-gray-600 dark:text-gray-400">
+              Project submissions are no longer accepted.
+            </p>
+          </div>
+
+          <div className="space-y-4">
+            <p className="text-sm text-gray-600 dark:text-gray-400">
+              The submission deadline was December 7, 2025 at 23:59 WIB.
+            </p>
+
+            <button
+              onClick={() => navigate(`/teams/${teamId}`)}
+              className="w-full py-3 bg-primary-600 text-white rounded-lg font-semibold hover:bg-primary-700 transition-colors cursor-pointer"
+            >
+              Back to Team
+            </button>
+
+            <button
+              onClick={() => navigate('/dashboard')}
+              className="w-full py-3 text-gray-600 dark:text-gray-400 hover:text-gray-900 dark:hover:text-white transition-colors cursor-pointer"
+            >
+              Back to Dashboard
+            </button>
+          </div>
+        </div>
+      </div>
+    );
+  }
+
   const handleScreenshotUpload = async (
     e: React.ChangeEvent<HTMLInputElement>
   ) => {
@@ -138,6 +222,57 @@ const SubmitProjectPage: FC = (): ReactElement => {
       </div>
 
       <div className="max-w-4xl mx-auto px-4 sm:px-6 lg:px-8 py-8">
+        {/* Countdown Timer */}
+        {timeLeft && (
+          <div className="bg-blue-50 dark:bg-blue-900/20 border-2 border-blue-500 rounded-lg p-6 mb-6">
+            <div className="flex items-start space-x-3">
+              <span className="text-3xl">⏰</span>
+              <div className="flex-1">
+                <h3 className="font-bold text-blue-900 dark:text-blue-100 text-lg">
+                  Submission Deadline
+                </h3>
+                <p className="text-blue-800 dark:text-blue-200 mt-2 text-sm font-sans">
+                  Submissions close on December 7, 2025 at 23:59 WIB
+                </p>
+                <div className="mt-4 grid grid-cols-4 gap-4">
+                  <div className="bg-white dark:bg-gray-800 rounded-lg p-3 text-center">
+                    <div className="text-2xl font-bold text-blue-600 dark:text-blue-400">
+                      {timeLeft.days}
+                    </div>
+                    <div className="text-xs text-gray-600 dark:text-gray-400 mt-1">
+                      Days
+                    </div>
+                  </div>
+                  <div className="bg-white dark:bg-gray-800 rounded-lg p-3 text-center">
+                    <div className="text-2xl font-bold text-blue-600 dark:text-blue-400">
+                      {timeLeft.hours.toString().padStart(2, '0')}
+                    </div>
+                    <div className="text-xs text-gray-600 dark:text-gray-400 mt-1">
+                      Hours
+                    </div>
+                  </div>
+                  <div className="bg-white dark:bg-gray-800 rounded-lg p-3 text-center">
+                    <div className="text-2xl font-bold text-blue-600 dark:text-blue-400">
+                      {timeLeft.minutes.toString().padStart(2, '0')}
+                    </div>
+                    <div className="text-xs text-gray-600 dark:text-gray-400 mt-1">
+                      Minutes
+                    </div>
+                  </div>
+                  <div className="bg-white dark:bg-gray-800 rounded-lg p-3 text-center">
+                    <div className="text-2xl font-bold text-blue-600 dark:text-blue-400">
+                      {timeLeft.seconds.toString().padStart(2, '0')}
+                    </div>
+                    <div className="text-xs text-gray-600 dark:text-gray-400 mt-1">
+                      Seconds
+                    </div>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </div>
+        )}
+
         {/* Minimum Members Warning */}
         {!hasEnoughMembers && (
           <div className="bg-amber-50 dark:bg-amber-900/20 border-2 border-amber-500 rounded-lg p-6 mb-6">
@@ -200,6 +335,9 @@ const SubmitProjectPage: FC = (): ReactElement => {
               <label className="block text-[15px] font-medium text-gray-700 dark:text-gray-300">
                 Project Description <span className="text-red-500">*</span>
               </label>
+              <p className="text-sm text-gray-500 dark:text-gray-400 mb-2">
+                Describe your project, its features, and what problem it solves. You can also paste your demo video link here.
+              </p>
               <Controller
                 control={form.control}
                 name="description"
@@ -207,7 +345,7 @@ const SubmitProjectPage: FC = (): ReactElement => {
                   <div>
                     <Textarea
                       {...field}
-                      placeholder="Describe your project, its features, and what problem it solves..."
+                      placeholder="Describe your project, its features, and what problem it solves... You can paste your demo video link (YouTube, Loom, etc.) here as well."
                       rows={6}
                       className="w-full"
                       size="lg"

apps/hackathon/src/app/winners/page.tsx

@@ -0,0 +1,318 @@
+import { FC, ReactElement } from 'react';
+import { useNavigate } from 'react-router';
+import { useWinners } from '@imphnen-frontend-service/service';
+
+const WinnerPage: FC = (): ReactElement => {
+  const navigate = useNavigate();
+  const { data, isLoading, error } = useWinners();
+
+  const winners = data?.data ?? [];
+
+  if (isLoading) {
+    return (
+      <div className="flex items-center justify-center min-h-screen bg-gray-50 dark:bg-gray-950">
+        <div className="text-center">
+          <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-600 mx-auto mb-4"></div>
+          <div className="text-gray-600 dark:text-gray-400">
+            Loading winners...
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+  if (error) {
+    return (
+      <div className="flex flex-col items-center justify-center min-h-screen bg-gray-50 dark:bg-gray-950">
+        <div className="text-6xl mb-4">⚠️</div>
+        <h2 className="text-2xl font-bold text-gray-900 dark:text-white mb-4">
+          Error Loading Winners
+        </h2>
+        <p className="text-gray-600 dark:text-gray-400 mb-6">
+          Unable to load winners at this time. Please try again later.
+        </p>
+      </div>
+    );
+  }
+
+  // Sort winners by rank
+  const sortedWinners = [...winners].sort((a, b) => a.rank - b.rank);
+
+  // Medal emojis for top 3
+  const getMedalEmoji = (rank: number) => {
+    switch (rank) {
+      case 1:
+        return '🥇';
+      case 2:
+        return '🥈';
+      case 3:
+        return '🥉';
+      default:
+        return '🏆';
+    }
+  };
+
+  // Get rank color
+  const getRankColor = (rank: number) => {
+    switch (rank) {
+      case 1:
+        return 'from-yellow-400 to-yellow-600';
+      case 2:
+        return 'from-gray-300 to-gray-500';
+      case 3:
+        return 'from-amber-600 to-amber-800';
+      default:
+        return 'from-blue-500 to-blue-700';
+    }
+  };
+
+  return (
+    <div className="min-h-screen bg-gray-50 dark:bg-gray-950">
+      {/* Header */}
+      <div className="bg-white dark:bg-gray-900 border-b dark:border-gray-700">
+        <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-8">
+          <div className="text-center">
+            <div className="text-6xl mb-4">🏆</div>
+            <h1 className="text-4xl font-bold text-gray-900 dark:text-white mb-2">
+              Hackathon Winners
+            </h1>
+            <p className="text-gray-600 dark:text-gray-400">
+              Congratulations to all the winning teams!
+            </p>
+          </div>
+        </div>
+      </div>
+
+      {/* Winners List */}
+      <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-8">
+        {winners.length === 0 ? (
+          <div className="text-center py-16">
+            <div className="text-6xl mb-4">🎯</div>
+            <h2 className="text-2xl font-bold text-gray-900 dark:text-white mb-4">
+              No Winners Announced Yet
+            </h2>
+            <p className="text-gray-600 dark:text-gray-400">
+              Winners will be announced here once the hackathon concludes.
+            </p>
+          </div>
+        ) : (
+          <div className="space-y-8">
+            {/* Top 3 Winners - Mobile View */}
+            <div className="md:hidden space-y-6">
+              {[1, 2, 3].map((position) => {
+                const winner = sortedWinners[position - 1];
+
+                if(!winner) return null;
+
+                return (
+                  <div
+                    key={winner.id}
+                    className={`bg-white dark:bg-gray-800 rounded-lg p-3 shadow-lg ${
+                      getRankColor(winner.rank).includes('yellow')
+                        ? 'border-4 border-yellow-400 dark:border-yellow-600'
+                        : getRankColor(winner.rank).includes('gray')
+                        ? 'border-4 border-gray-400 dark:border-gray-600'
+                        : 'border-4 border-amber-600 dark:border-amber-500'
+                    }}`}
+                  >
+                    <div className="flex items-center gap-4">
+                      <div
+                        className={`aspect-square p-1 rounded-full bg-linear-to-br ${getRankColor(
+                          winner.rank
+                        )} flex items-center justify-center text-white font-bold text-2xl`}
+                      >
+                        <div className="text-4xl">
+                          {getMedalEmoji(winner.rank)}
+                        </div>
+                      </div>
+
+                      {winner.team.logo && (
+                        <img
+                          src={winner.team.logo}
+                          alt={`${winner.team.name} logo`}
+                          className="w-20 h-20 rounded-full object-cover border-3 border-white dark:border-gray-700 shadow-lg"
+                        />
+                      )}
+
+                      <div className="flex-1">
+                        <h2 className="text-xl font-bold text-gray-900 dark:text-white">
+                          {winner.team.name}
+                        </h2>
+                        <p className="text-sm text-gray-600 dark:text-gray-400">
+                          {winner.team.city}
+                        </p>
+                      </div>
+                    </div>
+                  </div>
+                );
+              })}
+            </div>
+
+            {/* Top 3 Winners - Tablet/Desktop Podium View */}
+            <div className="hidden md:flex gap-8 items-end justify-center w-full">
+              {[2, 1, 3].map((position) => {
+                const winner = sortedWinners[position - 1];
+                if(!winner) return null;
+                return (
+                  <div
+                    key={winner.id}
+                    className="w-full max-w-xs flex flex-col items-center space-y-4"
+                  >
+                    <div className="text-5xl">{getMedalEmoji(winner.rank)}</div>
+
+                    {/* Team Logo */}
+                    {winner.team.logo && (
+                      <img
+                        src={winner.team.logo}
+                        alt={`${winner.team.name} logo`}
+                        className="w-24 h-24 rounded-full object-cover border-4 border-white dark:border-gray-700 shadow-lg"
+                      />
+                    )}
+
+                    <div className="text-center px-2">
+                      <h2 className="text-2xl font-bold text-gray-900 dark:text-white">
+                        {winner.team.name}
+                      </h2>
+                      <p className="text-sm text-gray-600 dark:text-gray-400 mt-1">
+                        {winner.team.city}
+                      </p>
+                    </div>
+
+                    {/* Podium */}
+                    <div
+                      className={`${
+                        winner.rank === 1
+                          ? 'h-42 bg-yellow-500'
+                          : winner.rank === 2
+                          ? 'h-32 bg-gray-400'
+                          : 'h-16 bg-amber-600'
+                      } w-full flex items-end justify-center rounded-t-lg shadow-lg`}
+                    >
+                      <div className="text-white font-bold text-3xl pb-4">
+                        #{winner.rank}
+                      </div>
+                    </div>
+                  </div>
+                );
+              })}
+            </div>
+
+            {/* Ranks 4-23: Prize Winners */}
+            {sortedWinners.filter((w) => w.rank >= 4 && w.rank <= 23).length >
+              0 && (
+              <div className="mt-12">
+                <h2 className="text-2xl font-bold text-gray-900 dark:text-white mb-6 text-center">
+                  Favorite
+                </h2>
+                <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
+                  {sortedWinners
+                    .filter((w) => w.rank >= 4 && w.rank <= 23)
+                    .map((winner) => (
+                      <div
+                        key={winner.id}
+                        className="bg-white dark:bg-gray-800 border-2 border-gray-400 dark:border-gray-600 rounded-lg p-4 hover:shadow-lg transition-shadow"
+                      >
+                        <div className="flex items-center gap-4">
+                          <div className="shrink-0">
+                            <div className="w-12 h-12 rounded-full bg-linear-to-br from-gray-400 to-gray-600 flex items-center justify-center text-white font-bold text-lg">
+                              #{winner.rank}
+                            </div>
+                          </div>
+
+                          {winner.team.logo && (
+                            <img
+                              src={winner.team.logo}
+                              alt={`${winner.team.name} logo`}
+                              className="w-16 h-16 rounded-full object-cover border-2 border-gray-200 dark:border-gray-700"
+                            />
+                          )}
+
+                          <div className="flex-1 min-w-0">
+                            <h3 className="font-bold text-gray-900 dark:text-white truncate">
+                              {winner.team.name}
+                            </h3>
+                            <p className="text-sm text-gray-600 dark:text-gray-400">
+                              {winner.team.city}
+                            </p>
+                            <div className="flex items-center gap-1 mt-1">
+                              <span className="text-xs bg-yellow-100 dark:bg-yellow-900/30 text-yellow-800 dark:text-yellow-300 px-2 py-1 rounded-full">
+                                🎁 Prize Winner
+                              </span>
+                            </div>
+                          </div>
+                        </div>
+                      </div>
+                    ))}
+                </div>
+              </div>
+            )}
+
+            {/* Rank 24+: Remaining Participants */}
+            {sortedWinners.filter((w) => w.rank >= 24).length > 0 && (
+              <div className="mt-12">
+                <h2 className="text-2xl font-bold text-gray-900 dark:text-white mb-6 text-center">
+                  All Participants
+                </h2>
+                <div className="bg-white dark:bg-gray-800 rounded-lg shadow-md overflow-hidden">
+                  <div className="divide-y divide-gray-200 dark:divide-gray-700">
+                    {sortedWinners
+                      .filter((w) => w.rank >= 24)
+                      .map((participant) => (
+                        <div
+                          key={participant.id}
+                          className="p-4 hover:bg-gray-50 dark:hover:bg-gray-700/50 transition-colors"
+                        >
+                          <div className="flex items-center gap-4">
+                            <div className="shrink-0 w-10 text-center">
+                              <span className="text-sm font-semibold text-gray-600 dark:text-gray-400">
+                                #{participant.rank}
+                              </span>
+                            </div>
+
+                            {participant.team.logo && (
+                              <img
+                                src={participant.team.logo}
+                                alt={`${participant.team.name} logo`}
+                                className="w-12 h-12 rounded-full object-cover border-2 border-gray-200 dark:border-gray-700"
+                              />
+                            )}
+
+                            <div className="flex-1 min-w-0">
+                              <h3 className="font-semibold text-gray-900 dark:text-white">
+                                {participant.team.name}
+                              </h3>
+                              <p className="text-sm text-gray-600 dark:text-gray-400">
+                                {participant.team.city}
+                              </p>
+                            </div>
+                          </div>
+                        </div>
+                      ))}
+                  </div>
+                </div>
+              </div>
+            )}
+          </div>
+        )}
+      </div>
+
+      {/* Footer Info */}
+      {winners.length > 0 && (
+        <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 pb-8">
+          <div className="bg-blue-50 dark:bg-blue-900/20 border border-blue-200 dark:border-blue-800 rounded-lg p-6">
+            <h3 className="font-bold text-blue-900 dark:text-blue-100 mb-2">
+              Congratulations! 🎉
+            </h3>
+            <p className="text-sm text-blue-800 dark:text-blue-200">
+              Thank you to all participants for making this hackathon a success.
+              Every project and idea contributed to an incredible showcase of
+              innovation and creativity.
+            </p>
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default WinnerPage;

apps/hackathon/src/utils/aesclient.ts

@@ -0,0 +1,86 @@
+const enc = new TextEncoder();
+const dec = new TextDecoder();
+
+function randBytes(len: number): Uint8Array {
+  const b = new Uint8Array(len);
+  crypto.getRandomValues(b);
+  return b;
+}
+
+function bufToBase64(buf: ArrayBuffer): string {
+  const bytes = new Uint8Array(buf);
+  let s = '';
+  for (let i = 0; i < bytes.length; i++) s += String.fromCharCode(bytes[i]);
+  return btoa(s);
+}
+
+function base64ToBuf(b64: string): ArrayBuffer {
+  const s = atob(b64);
+  const arr = new Uint8Array(s.length);
+  for (let i = 0; i < s.length; i++) arr[i] = s.charCodeAt(i);
+  return arr.buffer;
+}
+
+async function deriveKeyFromPassphrase(passphrase: string, salt: Uint8Array, iterations = 100_000) {
+  const passKey = await crypto.subtle.importKey(
+    'raw',
+    enc.encode(passphrase),
+    { name: 'PBKDF2' },
+    false,
+    ['deriveKey']
+  );
+
+  return crypto.subtle.deriveKey(
+    {
+      name: 'PBKDF2',
+      salt,
+      iterations,
+      hash: 'SHA-256'
+    },
+    passKey,
+    { name: 'AES-GCM', length: 256 },
+    false,
+    ['encrypt', 'decrypt']
+  );
+}
+
+/**
+ * Encrypts plaintext with passphrase -> returns base64(salt||iv||ciphertext)
+ */
+export async function encryptText(plaintext: string, passphrase: string) {
+  const salt = randBytes(16); // 128-bit salt
+  const iv = randBytes(12);   // 96-bit IV recommended for GCM
+  const key = await deriveKeyFromPassphrase(passphrase, salt);
+
+  const cipher = await crypto.subtle.encrypt(
+    { name: 'AES-GCM', iv },
+    key,
+    enc.encode(plaintext)
+  );
+
+  // concat salt + iv + ciphertext
+  const out = new Uint8Array(salt.length + iv.length + cipher.byteLength);
+  out.set(salt, 0);
+  out.set(iv, salt.length);
+  out.set(new Uint8Array(cipher), salt.length + iv.length);
+
+  return bufToBase64(out.buffer);
+}
+
+/**
+ * Decrypts base64(salt||iv||ciphertext) with passphrase -> plaintext
+ */
+export async function decryptText(b64combined: string, passphrase: string) {
+  const combined = new Uint8Array(base64ToBuf(b64combined));
+  const salt = combined.slice(0, 16);
+  const iv = combined.slice(16, 28);
+  const cipher = combined.slice(28);
+
+  const key = await deriveKeyFromPassphrase(passphrase, salt);
+  const plainBuf = await crypto.subtle.decrypt(
+    { name: 'AES-GCM', iv },
+    key,
+    cipher
+  );
+  return dec.decode(plainBuf);
+}

apps/hackathon/src/utils/certificate.ts

@@ -0,0 +1,41 @@
+import { decryptText, encryptText } from "./aesclient";
+
+const SECRET_KEY = 'imphnen-hackathon-2025';
+
+/**
+ * Encode teamId and submissionId into a certificate ID
+ * Uses base64 encoding for simple obfuscation
+ * @param teamId - The team ID
+ * @param submissionId - The submission ID
+ * @returns Encoded certificate ID
+ */
+export const encodeCertificateId = async (teamId: string, submissionId: string): Promise<string> => {
+  const combined = `${teamId}::${submissionId}`;
+  return encryptText(combined, SECRET_KEY);
+};
+
+/**
+ * Decode certificate ID back to teamId and submissionId
+ * @param certId - The encoded certificate ID
+ * @returns Object containing teamId and submissionId
+ */
+export const decodeCertificateId = async (certId: string): Promise<{ teamId: string; submissionId: string }> => {
+  try {
+    const decoded = await decryptText(certId, SECRET_KEY);
+    const [teamId, submissionId] = decoded.split('::');
+    return { teamId, submissionId };
+  } catch {
+    throw new Error('Invalid certificate ID');
+  }
+};
+
+/**
+ * For development: Create a certId using created_at timestamp
+ * @param teamId - The team ID
+ * @param createdAt - The creation timestamp
+ * @returns Encoded certificate ID
+ */
+export const encodeCertificateIdWithTimestamp = (teamId: string, createdAt: string): string => {
+  const combined = `${teamId}::${createdAt}`;
+  return Buffer.from(combined).toString('base64');
+};

docs/api/hackathon_backoffice_api_contract.md

@@ -391,364 +391,7 @@ DELETE /api/v1/admin/users/550e8400-e29b-41d4-a716-446655440000
 
 ---
 
-## GET /api/v1/admin/teams
-
-### Purpose
-
-Retrieve paginated list of hackathon teams with filtering, searching, and sorting capabilities for backoffice team management.
-
-### Authentication & Authorization
-
-- Requires admin (backoffice) scope: e.g. `role=admin`
-- 401 if unauthenticated, 403 if authenticated but lacking required scope.
-
-### Query Parameters
-
-| Parameter      | Type    | Required | Default      | Description                                                                              |
-| -------------- | ------- | -------- | ------------ | ---------------------------------------------------------------------------------------- |
-| `page`         | integer | No       | 1            | Page number (1-based)                                                                    |
-| `limit`        | integer | No       | 10           | Items per page (1-100)                                                                   |
-| `search`       | string  | No       | -            | Search by team name, city, or leader name (case-insensitive)                             |
-| `visibility`   | string  | No       | `all`        | Filter by visibility: `all`, `public`, `private`                                         |
-| `city`         | string  | No       | `all`        | Filter by city or `all`                                                                  |
-| `submission`   | string  | No       | `all`        | Filter by submission status: `all`, `submitted`, `not_submitted`                         |
-| `member_count` | string  | No       | `all`        | Filter by member count: `all`, `1`, `2`, `3`, `4`, `5`                                   |
-| `sort_by`      | string  | No       | `created_at` | Sort field: `name`, `city`, `visibility`, `member_count`, `has_submission`, `created_at` |
-| `sort_order`   | string  | No       | `desc`       | Sort order: `asc`, `desc`                                                                |
-
-### Examples
-
-```
-GET /api/v1/admin/teams
-GET /api/v1/admin/teams?page=2&limit=10
-GET /api/v1/admin/teams?search=innovators&visibility=public
-GET /api/v1/admin/teams?city=Jakarta&submission=submitted&member_count=3
-GET /api/v1/admin/teams?sort_by=name&sort_order=asc
-```
-
-### Response Schema
-
-```jsonc
-{
-  "data": {
-    "teams": [
-      {
-        "id": "team-001",
-        "name": "Team Innovators",
-        "description": "Building innovative solutions for modern problems", // Optional
-        "city": "Jakarta",
-        "banner": "https://example.com/banners/team1.jpg", // Optional
-        "logo": "https://example.com/logos/team1.jpg", // Optional
-        "visibility": "public", // "public" | "private"
-        "member_count": 3,
-        "has_submission": true,
-        "created_at": "2024-11-15T08:30:00Z",
-        "updated_at": "2024-11-30T14:22:00Z",
-        "leader_id": "leader-team-001",
-        "members": [
-          {
-            "id": "member-team-001-0",
-            "joined_at": "2024-11-15T08:30:00Z",
-            "role": "leader", // "leader" | "member"
-            "status": "accepted", // "pending" | "accepted" | "rejected"
-            "team_id": "team-001",
-            "user_id": "leader-team-001",
-            "user": {
-              "id": "leader-team-001",
-              "avatar": "https://ui-avatars.com/api/?name=John+Doe", // Optional
-              "bio": "Passionate developer with 5+ years experience", // Optional
-              "created_at": "2024-10-01T08:30:00Z",
-              "email": "john.doe@example.com",
-              "fullname": "John Doe",
-              "is_active": true,
-              "location": "Jakarta",
-              "phone_number": "+6281234567890", // Optional
-              "skills": ["Frontend Developer", "UI/UX Designer"],
-              "updated_at": "2024-11-30T14:22:00Z"
-            }
-          }
-          // ... more members
-        ]
-      }
-      // ... more teams
-    ],
-    "pagination": {
-      "current_page": 1,
-      "total_pages": 15,
-      "total_items": 147,
-      "items_per_page": 10,
-      "has_next": true,
-      "has_prev": false
-    },
-    "filters": {
-      "available_cities": ["Jakarta", "Bandung", "Surabaya", "Medan", "Yogyakarta"],
-      "available_skills": ["Frontend Developer", "Backend Developer", "Full Stack Developer", "DevOps Engineer", "UI/UX Designer", "Product Manager", "Data Scientist", "Mobile Developer"]
-    }
-  }
-}
-```
-
----
-
-## GET /api/v1/admin/teams/{team_id}
-
-### Purpose
-
-Retrieve detailed information for a specific team by ID.
-
-### Authentication & Authorization
-
-- Requires admin (backoffice) scope: e.g. `role=admin`
-
-### Path Parameters
-
-| Parameter | Type   | Required | Description |
-| --------- | ------ | -------- | ----------- |
-| `team_id` | string | Yes      | Team ID     |
-
-### Examples
-
-```
-GET /api/v1/admin/teams/team-001
-```
-
-### Response Schema
-
-```jsonc
-{
-  "data": {
-    "id": "team-001",
-    "name": "Team Innovators",
-    "description": "Building innovative solutions for modern problems",
-    "city": "Jakarta",
-    "banner": "https://example.com/banners/team1.jpg",
-    "logo": "https://example.com/logos/team1.jpg",
-    "visibility": "public",
-    "member_count": 3,
-    "has_submission": true,
-    "created_at": "2024-11-15T08:30:00Z",
-    "updated_at": "2024-11-30T14:22:00Z",
-    "leader_id": "leader-team-001",
-    "members": [
-      {
-        "id": "member-team-001-0",
-        "joined_at": "2024-11-15T08:30:00Z",
-        "role": "leader",
-        "status": "accepted",
-        "team_id": "team-001",
-        "user_id": "leader-team-001",
-        "user": {
-          "id": "leader-team-001",
-          "avatar": "https://ui-avatars.com/api/?name=John+Doe",
-          "bio": "Passionate developer with 5+ years experience",
-          "created_at": "2024-10-01T08:30:00Z",
-          "email": "john.doe@example.com",
-          "fullname": "John Doe",
-          "is_active": true,
-          "location": "Jakarta",
-          "phone_number": "+6281234567890",
-          "skills": ["Frontend Developer", "UI/UX Designer"],
-          "updated_at": "2024-11-30T14:22:00Z"
-        }
-      }
-      // ... all team members
-    ]
-  }
-}
-```
-
----
-
-## POST /api/v1/admin/teams
-
-### Purpose
-
-Create a new team in the hackathon system.
-
-### Authentication & Authorization
-
-- Requires admin (backoffice) scope: e.g. `role=admin`
-
-### Request Body Schema
-
-```jsonc
-{
-  "name": "Team New Innovators", // Required, 1-100 chars
-  "description": "Building next-gen solutions", // Optional, max 500 chars
-  "city": "Jakarta", // Required, from predefined list
-  "visibility": "public", // Required, "public" | "private"
-  "leader_id": "user-123", // Required, existing user ID
-  "banner": "https://example.com/banners/new.jpg", // Optional, URL
-  "logo": "https://example.com/logos/new.jpg" // Optional, URL
-}
-```
-
-### Response Schema
-
-```jsonc
-{
-  "data": {
-    "id": "team-new-001",
-    "name": "Team New Innovators",
-    "description": "Building next-gen solutions",
-    "city": "Jakarta",
-    "banner": "https://example.com/banners/new.jpg",
-    "logo": "https://example.com/logos/new.jpg",
-    "visibility": "public",
-    "member_count": 1,
-    "has_submission": false,
-    "created_at": "2024-12-02T10:30:00Z",
-    "updated_at": "2024-12-02T10:30:00Z",
-    "leader_id": "user-123",
-    "members": [
-      {
-        "id": "member-new-001-0",
-        "joined_at": "2024-12-02T10:30:00Z",
-        "role": "leader",
-        "status": "accepted",
-        "team_id": "team-new-001",
-        "user_id": "user-123",
-        "user": {
-          "id": "user-123",
-          "fullname": "John Doe",
-          "email": "john.doe@example.com",
-          "location": "Jakarta",
-          "is_active": true,
-          "skills": ["Frontend Developer"],
-          "created_at": "2024-10-01T08:30:00Z",
-          "updated_at": "2024-12-02T10:30:00Z"
-        }
-      }
-    ]
-  }
-}
-```
-
----
-
-## PUT /api/v1/admin/teams/{team_id}
-
-### Purpose
-
-Update an existing team's information.
-
-### Authentication & Authorization
-
-- Requires admin (backoffice) scope: e.g. `role=admin`
-
-### Path Parameters
-
-| Parameter | Type   | Required | Description |
-| --------- | ------ | -------- | ----------- |
-| `team_id` | string | Yes      | Team ID     |
-
-### Request Body Schema
-
-```jsonc
-{
-  "name": "Team Updated Name", // Optional, 1-100 chars
-  "description": "Updated description", // Optional, max 500 chars, null to clear
-  "city": "Bandung", // Optional, from predefined list
-  "visibility": "private", // Optional, "public" | "private"
-  "banner": "https://example.com/banners/updated.jpg", // Optional, URL, null to remove
-  "logo": "https://example.com/logos/updated.jpg" // Optional, URL, null to remove
-}
-```
-
-### Response Schema
-
-Same as GET /api/v1/admin/teams/{team_id} with updated values.
-
----
-
-## DELETE /api/v1/admin/teams/{team_id}
-
-### Purpose
-
-Delete a team from the hackathon system.
-
-### Authentication & Authorization
-
-- Requires admin (backoffice) scope: e.g. `role=admin`
-
-### Path Parameters
-
-| Parameter | Type   | Required | Description |
-| --------- | ------ | -------- | ----------- |
-| `team_id` | string | Yes      | Team ID     |
-
-### Response Schema
-
-```jsonc
-{
-  "data": {
-    "message": "Team successfully deleted",
-    "deleted_team_id": "team-001",
-    "deleted_at": "2024-12-02T10:50:00Z"
-  }
-}
-```
-
----
-
-## GET /api/v1/admin/teams/{team_id}/submission
-
-### Purpose
-
-Retrieve submission details for a specific team.
-
-### Authentication & Authorization
-
-- Requires admin (backoffice) scope: e.g. `role=admin`
-
-### Path Parameters
-
-| Parameter | Type   | Required | Description |
-| --------- | ------ | -------- | ----------- |
-| `team_id` | string | Yes      | Team ID     |
-
-### Response Schema
-
-```jsonc
-{
-  "data": {
-    "team_id": "team-001",
-    "team_name": "Team Innovators",
-    "project_name": "EcoTrack - Smart Waste Management",
-    "project_description": "An AI-powered waste management solution that helps cities optimize collection routes and reduce environmental impact.",
-    "repository_url": "https://github.com/team-innovators/ecotrack",
-    "demo_url": "https://ecotrack-demo.vercel.app",
-    "presentation_url": "https://docs.google.com/presentation/d/team-innovators-pitch/edit",
-    "submitted_at": "2024-12-01T15:30:00Z",
-    "updated_at": "2024-12-01T16:45:00Z"
-  }
-}
-```
-
----
-
-## Common Error Responses
-
-### Team Management Endpoints
-
-| Status | Code                   | Message                         | Notes                      |
-| ------ | ---------------------- | ------------------------------- | -------------------------- |
-| 400    | `validation_error`     | `Invalid request data`          | Field validation failures  |
-| 401    | `unauthorized`         | `Authentication required`       | Missing/invalid token      |
-| 403    | `forbidden`            | `Insufficient permissions`      | Lacks required scope       |
-| 404    | `team_not_found`       | `Team not found`                | Invalid team ID            |
-| 404    | `submission_not_found` | `Team submission not found`     | Team has no submission     |
-| 409    | `team_already_exists`  | `Team with name already exists` | Duplicate team name        |
-| 413    | `payload_too_large`    | `Banner/logo file too large`    | Image exceeds size limit   |
-| 422    | `invalid_city`         | `Invalid city specified`        | City not in allowed list   |
-| 422    | `invalid_leader`       | `Invalid leader user ID`        | Leader user does not exist |
-| 429    | `rate_limited`         | `Too many requests`             | Rate limiting              |
-| 500    | `internal_error`       | `Unexpected server error`       | Unhandled exception        |
-
----
-
 **Revision History**
 
 - v1.0.0 (2025-11-30): Initial contract drafted.
 - v2.0.0 (2025-12-01): Added user management endpoints with filtering, pagination, CRUD operations, and avatar handling.
-- v3.0.0 (2025-12-02): Added team management endpoints based on backoffice implementation with team members, submissions, and comprehensive filtering.

libs/service/src/hooks/index.ts

@@ -5,3 +5,4 @@ export * from './mentors';
 export * from './upload';
 export * from './teams';
 export * from './messages';
+export * from './winners';

libs/service/src/hooks/winners/index.ts

@@ -0,0 +1,43 @@
+import { useQuery } from '@tanstack/react-query';
+import { hackathonApi, HackathonApiResponse } from '../../api/hackathon';
+
+// Query keys
+export const winnerKeys = {
+  all: ['winners'] as const,
+  lists: () => [...winnerKeys.all, 'list'] as const,
+};
+
+// API response types
+interface Team {
+  id: string;
+  name: string;
+  description: string;
+  city: string;
+  visibility: string;
+  logo: string;
+  banner: string;
+  leader_id: string;
+  created_at: string;
+  updated_at: string;
+}
+
+interface Winner {
+  id: string;
+  team_id: string;
+  team: Team;
+  rank: number;
+  prize: string;
+  announced_at: string;
+  created_at: string;
+  updated_at: string;
+}
+
+export const useWinners = () => {
+  return useQuery<HackathonApiResponse<Winner[]>>({
+    queryKey: winnerKeys.lists(),
+    queryFn: async () => {
+      const response = await hackathonApi.get('/winners');
+      return response.data;
+    },
+  });
+};

package.json

@@ -49,11 +49,13 @@
     "dayjs": "^1.11.13",
     "framer-motion": "^12.9.2",
     "graphql": "^16.11.0",
+    "html2canvas": "^1.4.1",
     "js-cookie": "^3.0.5",
     "next": "~16.0.3",
     "next-themes": "^0.4.6",
     "openapi-fetch": "^0.15.0",
     "openapi-react-query": "^0.5.0",
+    "qrcode": "^1.5.4",
     "react": "^19.1.0",
     "react-dom": "^19.1.0",
     "react-hook-form": "^7.56.4",
@@ -96,6 +98,7 @@
     "@testing-library/user-event": "^14.6.1",
     "@types/js-cookie": "^3.0.6",
     "@types/node": "^22.12.0",
+    "@types/qrcode": "^1.5.6",
     "@types/react": "^19.1.2",
     "@types/react-dom": "^19.1.2",
     "@vitejs/plugin-react": "^4.2.0",