feat(ui): overhaul UI/UX with CommandMenu, modern Linear design, interactive TOC, and live preview

apps/web/app/login/page.tsx

@@ -4,12 +4,10 @@ import { useState } from "react";
 import { useRouter } from "next/navigation";
 import Link from "next/link";
 
-// Simple admin login form. POSTs password to /api/auth/login.
-// On success, the API sets an HTTP-only cookie. We don't touch the cookie
-// client-side (it's HttpOnly) — just redirect to /create after login.
 export default function LoginPage() {
   const router = useRouter();
   const [password, setPassword] = useState("");
+  const [showPassword, setShowPassword] = useState(false);
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
 
@@ -27,7 +25,7 @@ export default function LoginPage() {
 
       if (!res.ok) {
         const data = await res.json().catch(() => ({}));
-        throw new Error(data.error ?? "Login failed");
+        throw new Error(data.error ?? "Invalid password. Check ADMIN_PASSWORD.");
       }
 
       router.push("/create");
@@ -39,49 +37,72 @@ export default function LoginPage() {
   }
 
   return (
-    <div className="flex min-h-[60vh] items-center justify-center">
-      <div className="w-full max-w-sm">
-        <h1 className="text-2xl font-light text-[#f7f8f8] mb-2">Admin Login</h1>
-        <p className="text-[#8a8f98] text-sm mb-6">
-          Enter your admin password to manage documents.
-        </p>
+    <div className="flex min-h-[65vh] items-center justify-center px-4">
+      <div className="w-full max-w-md bg-[#0f1011] border border-[#1f2022] rounded-2xl p-6 sm:p-8 shadow-2xl relative overflow-hidden">
+        {/* Top decorative glow */}
+        <div className="absolute -top-12 left-1/2 -translate-x-1/2 w-48 h-24 bg-[#5e6ad2]/20 blur-2xl pointer-events-none rounded-full" />
+
+        <div className="text-center mb-8">
+          <div className="w-12 h-12 rounded-xl bg-[#5e6ad2] text-white font-bold text-xl flex items-center justify-center mx-auto mb-3 shadow-lg shadow-[#5e6ad2]/25">
+            M
+          </div>
+          <h1 className="text-2xl font-bold text-[#f7f8f8] tracking-tight">Admin Authentication</h1>
+          <p className="text-xs text-[#8a8f98] mt-1.5">
+            Enter your admin password to create, edit, or delete documents.
+          </p>
+        </div>
 
         {error && (
-          <div className="p-3 mb-4 rounded border border-[#274360] text-[#fca5a5] text-sm">
+          <div className="p-3.5 mb-6 rounded-lg border border-rose-500/30 bg-rose-500/10 text-rose-400 text-xs">
             {error}
           </div>
         )}
 
         <form onSubmit={handleSubmit} className="space-y-4">
           <div>
-            <label className="block text-xs font-medium text-[#d0d6e0] mb-1">
-              Password
+            <label className="block text-xs font-semibold uppercase tracking-wider text-[#8a8f98] mb-1.5">
+              Admin Password
             </label>
-            <input
-              type="password"
-              value={password}
-              onChange={(e) => setPassword(e.target.value)}
-              className="w-full px-3 py-2 bg-[#0f1011] border border-[#23252a] rounded text-[#f7f8f8] focus:outline-none focus:border-[#5e6ad2] focus:ring-1 focus:ring-[#5e6ad2]"
-              required
-              autoFocus
-            />
+            <div className="relative">
+              <input
+                type={showPassword ? "text" : "password"}
+                value={password}
+                onChange={(e) => setPassword(e.target.value)}
+                placeholder="Enter password..."
+                className="w-full px-3.5 py-2.5 bg-[#141517] border border-[#23252a] hover:border-[#383b42] rounded-lg text-sm text-[#f7f8f8] placeholder-[#62666d] focus:outline-none focus:border-[#5e6ad2] focus:ring-1 focus:ring-[#5e6ad2] transition-colors"
+                required
+                autoFocus
+              />
+              <button
+                type="button"
+                onClick={() => setShowPassword(!showPassword)}
+                className="absolute right-3 top-2.5 text-xs text-[#62666d] hover:text-[#d0d6e0]"
+              >
+                {showPassword ? "Hide" : "Show"}
+              </button>
+            </div>
           </div>
+
           <button
             type="submit"
             disabled={loading}
-            className="w-full px-4 py-2 bg-[#5e6ad2] text-white rounded hover:bg-[#7170ff] transition-colors disabled:opacity-50 font-medium text-sm"
+            className="w-full py-2.5 bg-[#5e6ad2] hover:bg-[#6a75e0] text-white rounded-lg transition-all font-medium text-sm shadow-md shadow-[#5e6ad2]/20 disabled:opacity-50 flex items-center justify-center gap-2"
           >
-            {loading ? "Logging in..." : "Login"}
+            {loading && (
+              <div className="w-4 h-4 border-2 border-white border-t-transparent rounded-full animate-spin" />
+            )}
+            <span>{loading ? "Authenticating..." : "Sign In"}</span>
           </button>
         </form>
 
-        <div className="mt-6">
+        <div className="mt-8 pt-6 border-t border-[#1a1b1d] flex items-center justify-between text-xs text-[#8a8f98]">
           <Link
             href="/"
-            className="text-sm text-[#8a8f98] hover:text-[#d0d6e0] transition-colors"
+            className="hover:text-[#d0d6e0] transition-colors"
           >
-            ← Back to home
+            ← Back to Home
           </Link>
+          <span className="text-[11px] text-[#62666d]">HTTP-only Secure Cookie</span>
         </div>
       </div>
     </div>