/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px 0;
}

/* 认证页面容器 */
.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 1000px;
    min-height: 600px;
    height: auto;
    background: rgb(255, 254, 255);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    margin: 20px;
}

/* 左侧表单区域 */
.auth-left {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background: #ffffff;
    min-height: 600px;
}

/* 右侧图片区域 */
.auth-right {
    flex: 1;
    height: 100%;
    background: rgb(255, 254, 255);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2px 8px; /* 上下2px，左右8px内边距 */
}

.auth-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px; /* 添加圆角让图片更美观 */
}

/* 表单区域 */
.auth-form {
    width: 100%;
    max-width: 400px;
}

.auth-title {
    font-size: 28px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 30px;
    text-align: center;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
    font-size: 14px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"] {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s ease;
    background: #ffffff;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group input[type="password"]:focus {
    outline: none;
    border-color: #2196f3;
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

/* 密码输入框样式 */
.password-input {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    font-size: 16px;
    color: #666;
    user-select: none;
    transition: color 0.3s ease;
}

.password-toggle:hover {
    color: #2196f3;
}

/* 错误提示 */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-error {
    background: #ffebee;
    color: #c62828;
    border: 1px solid #ffcdd2;
}

/* 复选框样式 */
.checkbox-group {
    display: flex;
    align-items: flex-start;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
    font-size: 14px;
    color: #666;
}

.checkbox-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid #ddd;
    border-radius: 4px;
    display: inline-block;
    position: relative;
    margin-right: 8px;
    transition: all 0.3s ease;
    background: white;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: #2196f3;
    border-color: #2196f3;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
    font-weight: bold;
}

/* 按钮样式 */
.btn {
    width: 100%;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, #2196f3 0%, #1976d2 100%);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1976d2 0%, #1565c0 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

/* 链接样式 */
.auth-links {
    text-align: center;
    margin-top: 20px;
}

.login-link, .register-link {
    color: #2196f3;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.login-link:hover, .register-link:hover {
    color: #1976d2;
}

.terms-link {
    color: #2196f3;
    text-decoration: none;
    font-weight: 500;
}

.terms-link:hover {
    text-decoration: underline;
}

/* 页脚 */
.auth-footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}

.auth-footer p {
    font-size: 12px;
    color: #999;
}

/* 表单帮助文本样式 */
.form-help {
    display: block;
    font-size: 12px;
    color: #666;
    margin-top: 4px;
    font-style: italic;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .auth-container {
        flex-direction: column;
        height: auto;
        margin: 10px;
    }
    
    .auth-right {
        height: 200px;
        padding: 2px 5px; /* 小屏幕上减少更多内边距 */
    }
    
    .auth-left {
        padding: 30px 20px;
    }
    
    .auth-title {
        font-size: 24px;
        margin-bottom: 20px;
    }
}

/* 弹窗样式 */
.modal {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
}

.modal-content {
    background-color: #fefefe;
    margin: 5% auto;
    padding: 0;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    padding: 20px 30px;
    background: linear-gradient(135deg, #2196f3 0%, #1976d2 100%);
    color: white;
    border-radius: 12px 12px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
}

.close {
    color: white;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.close:hover,
.close:focus {
    opacity: 0.7;
}

.modal-body {
    padding: 30px;
}

.form-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}

.btn-secondary {
    background: #f5f5f5;
    color: #666;
    border: 1px solid #ddd;
}

.btn-secondary:hover {
    background: #e0e0e0;
    color: #333;
}