:root {
            --primary-color: #4e73df;
            --secondary-color: #858796;
            --success-color: #1cc88a;
            --light-bg: #f8f9fc;
        }
        
        body {
            font-family: 'Open Sans', sans-serif;
            background-color: var(--light-bg);
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .login-container {
            background-color: #fff;
            border-radius: 10px;
            box-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.15);
            overflow: hidden;
            width: 100%;
            max-width: 400px;
        }
        
        .login-header {
            background: linear-gradient(180deg, var(--primary-color) 0%, #224abe 100%);
            color: white;
            padding: 2rem;
            text-align: center;
        }
        
        .login-header img {
            max-width: 180px;
            margin-bottom: 1rem;
        }
        
        .login-header h1 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0;
        }
        
        .login-form {
            padding: 2rem;
        }
        
        .form-control {
            padding: 0.75rem 1rem;
            border-radius: 0.35rem;
            border: 1px solid #d1d3e2;
        }
        
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
        }
        
        .input-group-text {
            background-color: #fff;
            border: 1px solid #d1d3e2;
            border-right: none;
        }
        
        .btn-login {
            background: linear-gradient(180deg, var(--primary-color) 0%, #224abe 100%);
            border: none;
            color: white;
            padding: 0.75rem;
            font-weight: 600;
            border-radius: 0.35rem;
            transition: all 0.3s;
        }
        
        .btn-login:hover {
            background: linear-gradient(180deg, #224abe 0%, var(--primary-color) 100%);
            transform: translateY(-2px);
        }
        
        .login-options {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1.5rem;
        }
        
        .form-check-input:checked {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
        }
        
        .register-link {
            text-align: center;
            margin-top: 1.5rem;
            color: var(--secondary-color);
        }
        
        .register-link a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
        }
        
        .register-link a:hover {
            text-decoration: underline;
        }
        
        .password-toggle {
            cursor: pointer;
            background-color: #fff;
            border: 1px solid #d1d3e2;
            border-left: none;
        }
        
        @media (max-width: 576px) {
            .login-container {
                margin: 0 1rem;
            }
            
            .login-header {
                padding: 1.5rem;
            }
            
            .login-form {
                padding: 1.5rem;
            }
        }
        
        .alert {
            border-radius: 0.35rem;
            padding: 0.75rem 1.25rem;
            margin-bottom: 1rem;
        }
    
                .premium-badge {
            background: linear-gradient(135deg, #FFD700 0%, #DAA520 100%);
            color: #000;
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: bold;
            margin-left: 10px;
        }