body {
            background: linear-gradient(120deg, #23243a 0%, #1e1e2f 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: 'Poppins', 'Segoe UI', Arial, sans-serif;
        }
        .login-card {
            background: #24264a;
            padding: 2.5rem 2rem 2rem 2rem;
            border-radius: 20px;
            box-shadow: 0 6px 32px 0 rgba(20,20,50,0.15);
            width: 100%;
            max-width: 370px;
            color: #fff;
            text-align: center;
        }
        .login-card h2 {
            font-weight: 700;
            letter-spacing: 2px;
            margin-bottom: 1.2rem;
        }
        .login-card .subtitle {
            font-size: 1rem;
            color: #a7b3e5;
            margin-bottom: 1.8rem;
        }
        .form-control {
            background: #23243a;
            border: 1.5px solid #3b3e5e;
            color: #fff;
            font-size: 16px;
            border-radius: 8px;
            padding: 11px 14px;
        }
        .form-control:focus {
            border-color: #0d6efd;
            background: #24264a;
            color: #fff;
            box-shadow: none;
        }

        .form-control::placeholder {
            color: #fff !important;
            opacity: 1 !important;
        }
        
        .btn-primary {
            background: linear-gradient(90deg, #257cff 0%, #3ab3ff 100%);
            border: none;
            border-radius: 10px;
            padding: 11px 0;
            font-weight: bold;
            font-size: 16px;
            margin-top: 0.7rem;
            width: 100%;
            box-shadow: 0 4px 24px 0 rgba(44, 132, 255, 0.08);
            transition: background 0.15s;
        }
        .btn-primary:hover, .btn-primary:focus {
            background: linear-gradient(90deg, #1b62c7 0%, #237da7 100%);
        }
        .login-actions {
            display: flex;
            flex-direction: column;
            gap: 0.3rem;
            margin-top: 1.2rem;
        }
        .login-actions a {
            color: #74c0fc;
            font-size: 14px;
            text-decoration: none;
            transition: color 0.2s;
        }
        .login-actions a:hover {
            color: #ffbe76;
            text-decoration: underline;
        }
        .alert {
            font-size: 15px;
            padding: 12px;
            margin-bottom: 18px;
            border-radius: 10px;
        }
        .modal-content {
            background: #22244a;
            border-radius: 16px;
            color: #fff;
        }
        @media (max-width: 600px) {
            .login-card {
                padding: 1.5rem 0.8rem;
                border-radius: 12px;
            }
        }