body {
            font-family: 'Outfit', sans-serif;
            background-color: #0f172a;
            color: #f8fafc;
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100vh;
            margin: 0;
        }
        .login-card {
            background-color: #1e293b;
            padding: 40px;
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.5);
            width: 100%;
            max-width: 400px;
        }
        .login-card h2 {
            margin-top: 0;
            text-align: center;
            color: #38bdf8;
            font-size: 28px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #94a3b8;
        }
        .form-group input {
            width: 100%;
            padding: 12px;
            border-radius: 6px;
            border: 1px solid #334155;
            background-color: #0f172a;
            color: white;
            font-size: 16px;
            box-sizing: border-box;
        }
        .form-group input:focus {
            outline: none;
            border-color: #38bdf8;
        }
        .btn-login {
            width: 100%;
            padding: 12px;
            background-color: #38bdf8;
            color: #0f172a;
            border: none;
            border-radius: 6px;
            font-size: 18px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }
        .btn-login:hover {
            background-color: #0ea5e9;
        }
        .alert-error {
            background-color: #ef4444;
            color: white;
            padding: 10px;
            border-radius: 6px;
            margin-bottom: 20px;
            text-align: center;
        }