/* ================================================
   税则目录页面专用样式
   ================================================ */

/* 税则目录页面专用样式继承通用下拉菜单样式 */

/* 主容器 */
.chapter-container {
    max-width: 1200px;
    margin: 1px;
    padding: 0;
}

/* 页面头部 */
.chapter-header {
    text-align: center;
    margin-bottom: 1.5rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-light));
    border-radius: var(--radius-xl);
    color: white;
    box-shadow: var(--shadow-lg);
}

.chapter-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.chapter-title i {
    font-size: 2rem;
    opacity: 0.9;
}

.chapter-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    margin: 0;
    font-weight: 400;
}

/* 搜索提示 */
.search-hint {
    text-align: center;
    margin-bottom: 2rem;
    padding: 1.25rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.search-hint-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.search-hint-text i {
    color: var(--primary-green);
    font-size: 1rem;
}

/* 章节网格 */
.chapter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 0.75rem;
    margin-bottom: 3rem;
    padding:0px 10px 10px 10px;
}

/* 章节卡片 */
.chapter-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
}

.chapter-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-light));
    transform: scaleY(0);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.chapter-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-green);
}

.chapter-card:hover::before {
    transform: scaleY(1);
}

.chapter-card:active {
    transform: translateY(0);
}

/* 章节内容 */
.chapter-content {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.5rem;
}

.chapter-number {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-green);
    letter-spacing: 0.025em;
    flex-shrink: 0;
}

.chapter-name {
    font-size: 1rem;
    color: var(--text-primary);
    line-height: 1.4;
    margin: 0;
    font-weight: 400;
    word-break: break-word;
    flex: 1;
}

/* 章节图标 */
.chapter-icon {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    color: var(--text-tertiary);
    font-size: 1.1rem;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-5px);
}

.chapter-card:hover .chapter-icon {
    opacity: 1;
    transform: translateX(0);
    color: var(--primary-green);
}

/* 返回区域 */
.back-section {
    text-align: center;
    margin: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-light);
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
}

.back-btn:hover {
    background: var(--primary-green);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-green);
}

.back-btn i {
    font-size: 0.9rem;
}

/* 加载状态 */
.loading-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.loading-spinner {
    display: inline-block;
    width: 2.5rem;
    height: 2.5rem;
    border: 3px solid var(--border-light);
    border-top: 3px solid var(--primary-green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.error-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.error-icon {
    font-size: 3rem;
    color: var(--error-color);
    margin-bottom: 1rem;
}

.error-button {
    margin-top: 1.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--primary-green);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.error-button:hover {
    background: var(--primary-green-dark);
    transform: translateY(-1px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .chapter-container {
        padding: 1.5rem 1rem;
    }
    
    .chapter-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .chapter-title {
        font-size: 1.875rem;
    }
    
    .chapter-card {
        padding: 1.25rem;
    }
    
    .chapter-header {
        padding: 1.5rem;
        margin-bottom: 2rem;
    }
}

@media (max-width: 480px) {
    .chapter-container {
        padding: 1rem 0.75rem;
    }
    
    .chapter-title {
        font-size: 1.625rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .chapter-card {
        padding: 1rem;
    }
    
    .search-hint {
        padding: 1rem;
    }
    
    .search-hint-text {
        font-size: 0.875rem;
        flex-direction: column;
        gap: 0.25rem;
    }
}