body {
            background: linear-gradient(135deg, #0d6efd, #4a86ff);
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .login-card {
            width: 100%;
            max-width: 400px;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,0,0,0.2);
        }