/* Reset CSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: white;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    text-align: center;
}

.login-box h1 {
    color: #333;
    margin-bottom: 10px;
    font-size: 2rem;
}

.login-box p {
    color: #666;
    margin-bottom: 30px;
}

.demo-info {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 25px;
    text-align: left;
}

.demo-info h4 {
    color: #333;
    margin-bottom: 10px;
    font-size: 1rem;
}

.demo-info p {
    margin: 5px 0;
    font-size: 14px;
    color: #666;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #333;
    font-weight: bold;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.radio-group {
    display: flex;
    gap: 20px;
    margin-top: 10px;
}

.radio-group input[type="radio"] {
    width: auto;
    margin-right: 5px;
}

.radio-group label {
    margin-bottom: 0;
    font-weight: normal;
}

.login-btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s;
}

.login-btn:hover {
    transform: translateY(-2px);
}

.switch-form {
    margin-top: 20px;
    color: #666;
}

.switch-form a {
    color: #667eea;
    text-decoration: none;
    font-weight: bold;
}

.switch-form a:hover {
    text-decoration: underline;
}

.message {
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 15px;
    text-align: center;
    display: none;
}

.message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Responsive */
@media (max-width: 480px) {
    .login-container {
        padding: 15px;
    }
    
    .login-box {
        padding: 30px 20px;
    }
    
    .login-box h1 {
        font-size: 1.5rem;
    }
    
    .radio-group {
        flex-direction: column;
        gap: 10px;
    }
    
    .demo-info {
        padding: 10px;
    }
    
    .form-group input {
        padding: 10px;
        font-size: 14px;
    }
    
    .login-btn {
        padding: 10px;
        font-size: 14px;
    }
}