body {
            font-family: 'Outfit', sans-serif;
            background-color: #0f172a;
            color: #f8fafc;
            display: flex; justify-content: center; align-items: center; height: 100vh; margin: 0;
        }
        .login-card {
            background: #1e293b;
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.5);
            width: 100%; max-width: 400px;
            text-align: center;
        }
        .login-card h2 { color: #38bdf8; margin-top: 0; margin-bottom: 20px; }
        .form-group { margin-bottom: 20px; text-align: left; }
        .form-group label { display: block; margin-bottom: 8px; color: #94a3b8; font-weight: 600; }
        .form-group input { width: 100%; padding: 12px; border-radius: 8px; border: 1px solid #334155; background: #0f172a; color: white; font-size: 16px; box-sizing: border-box; }
        .btn {
            display: inline-block; width: 100%; padding: 15px; border-radius: 8px;
            font-weight: bold; border: none; cursor: pointer; text-align: center;
            font-size: 18px; box-sizing: border-box;
            background: linear-gradient(135deg, #38bdf8, #2563eb); color: white; transition: transform 0.2s;
        }
        .btn:hover { transform: scale(1.02); }
        .alert { background: #166534; color: white; padding: 10px; border-radius: 6px; margin-bottom: 20px; text-align: left; }
        .link { color: #38bdf8; text-decoration: none; display: inline-block; margin-top: 20px; }