.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 500px;
}

.auth-box {
    background: linear-gradient(135deg, #FFFFFF 0%, #F5F5F5 100%);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.8);
    width: 100%;
    max-width: 450px;
    border: 1px solid #C0C0C0;
    border-top: 4px solid #5A7A9A;
}

.auth-box h2 {
    color: #3D5A6C;
    text-align: center;
    margin-bottom: 30px;
    font-size: 2em;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #3D5A6C;
    font-weight: 600;
    font-size: 1em;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"] {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #B8C5D0;
    border-radius: 5px;
    font-size: 1em;
    transition: all 0.3s;
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background: linear-gradient(180deg, #FFFFFF 0%, #F8F8F8 100%);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group input[type="password"]:focus {
    outline: none;
    border-color: #5A7A9A;
    box-shadow: 0 0 0 3px rgba(90, 122, 154, 0.1), inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-group label {
    margin-bottom: 0;
    font-weight: normal;
    cursor: pointer;
}

.btn-submit {
    width: 100%;
    padding: 14px;
    background: linear-gradient(180deg, #5A7A9A 0%, #3D5A6C 100%);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.btn-submit:hover {
    background: linear-gradient(180deg, #6A8AAA 0%, #5A7A9A 100%);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.btn-submit:active {
    transform: scale(0.98);
}

.auth-link {
    text-align: center;
    margin-top: 20px;
    color: #4A4A4A;
}

.auth-link a {
    color: #5A7A9A;
    text-decoration: none;
    font-weight: 600;
}

.auth-link a:hover {
    text-decoration: underline;
}

.forgot-password {
    text-align: center;
    margin-top: 15px;
}

.forgot-password a {
    color: #5A7A9A;
    text-decoration: none;
    font-size: 0.95em;
}

.forgot-password a:hover {
    text-decoration: underline;
}

ul{
    list-style: none;
}

.error-message {
    color: red;
    font-size: 0.9em;
    margin-top: 5px;
}

@media (max-width: 768px) {
    .auth-container {
        min-height: 400px;
        padding: 20px;
    }
    
    .auth-box {
        padding: 30px;
        max-width: 100%;
    }
    
    .auth-box h2 {
        font-size: 1.8em;
        margin-bottom: 25px;
    }
    
    .form-group input[type="text"],
    .form-group input[type="email"],
    .form-group input[type="password"] {
        padding: 10px 12px;
        font-size: 0.95em;
    }
    
    .btn-submit {
        padding: 12px;
        font-size: 1em;
    }
    
    .auth-link {
        margin-top: 15px;
    }
    
    .forgot-password {
        margin-top: 10px;
    }
}

@media (max-width: 480px) {
    .auth-container {
        min-height: 350px;
        padding: 15px;
    }
    
    .auth-box {
        padding: 20px;
    }
    
    .auth-box h2 {
        font-size: 1.5em;
        margin-bottom: 20px;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
    
    .form-group label {
        font-size: 0.95em;
    }
    
    .form-group input[type="text"],
    .form-group input[type="email"],
    .form-group input[type="password"] {
        padding: 8px 10px;
        font-size: 0.9em;
    }
    
    .checkbox-group {
        gap: 8px;
    }
    
    .checkbox-group input[type="checkbox"] {
        width: 16px;
        height: 16px;
    }
    
    .btn-submit {
        padding: 10px;
        font-size: 0.95em;
    }
    
    .auth-link {
        font-size: 0.95em;
    }
    
    .forgot-password a {
        font-size: 0.85em;
    }
}