/* ===========================================
   文章页专用样式 - 暖色商务风
   =========================================== */

/* ===========================================
   主内容区域
   =========================================== */

main {
    padding-top: 72px;
    background: var(--bg-primary);
    min-height: calc(100vh - 72px);
}

/* ===========================================
   文章容器
   =========================================== */

.article-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 48px var(--space-md) 80px;
}

/* ===========================================
   面包屑导航
   =========================================== */

.breadcrumb,
.article-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.breadcrumb a,
.article-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.breadcrumb a:hover,
.article-breadcrumb a:hover {
    color: var(--accent-color);
}

.breadcrumb .separator {
    color: var(--text-tertiary);
    font-size: 11px;
}

.breadcrumb .current {
    color: var(--text-primary);
    font-weight: 500;
}

.article-breadcrumb i {
    font-size: 10px;
    color: var(--text-tertiary);
}

/* ===========================================
   文章头部
   =========================================== */

.article-header {
    margin-bottom: 40px;
}

.article-title {
    font-family: var(--font-display);
    font-size: 40px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: 20px;
    letter-spacing: -0.01em;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    font-size: 14px;
    color: var(--text-secondary);
}

.meta-item,
.publish-date {
    display: flex;
    align-items: center;
    gap: 6px;
}

.meta-item i,
.publish-date i {
    font-size: 13px;
    color: var(--accent-color);
}

/* ===========================================
   文章内容卡片
   =========================================== */

.article-content {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 48px 40px;
}

.article-intro {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 32px;
    padding: 20px 24px;
    background: var(--accent-bg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-color);
}

.content-section {
    margin-bottom: 40px;
}

.content-section:last-of-type {
    margin-bottom: 0;
}

/* Section h2 with amber left border */
.content-section h2,
.article-content h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 32px 0 16px 0;
    padding-left: 16px;
    border-left: 4px solid var(--accent-color);
    line-height: 1.4;
}

.content-section h2:first-child,
.article-content h2:first-child {
    margin-top: 0;
}

.content-section h3,
.article-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 24px 0 12px 0;
}

.content-section p,
.article-content p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.content-section ul,
.article-content ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin: 15px 0;
    padding-left: 0;
}

.content-section li,
.article-content li {
    position: relative;
    padding-left: 24px;
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-secondary);
}

.content-section li::before,
.article-content li::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: var(--radius-full);
    background: var(--accent-color);
}

/* Links in articles */
.article-content a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.article-content a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* Tables in articles */
.article-content table {
    border-radius: var(--radius-md);
    overflow: hidden;
}

/* ===========================================
   提示框
   =========================================== */

.tip-box {
    background: var(--accent-light);
    border: 1px solid var(--accent-color);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    margin: 16px 0;
}

.tip-box ul {
    margin-bottom: 0;
}

/* ===========================================
   文章导航
   =========================================== */

.article-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.nav-btn,
.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    text-decoration: none;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-normal);
}

.nav-btn:hover,
.nav-link:hover {
    background: var(--accent-light);
    border-color: var(--accent-color);
    color: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.nav-btn i,
.nav-link i {
    font-size: 12px;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.nav-btn:hover i,
.nav-link:hover i {
    color: var(--accent-color);
}

.nav-btn.disabled,
.nav-link.disabled {
    color: var(--text-tertiary);
    cursor: not-allowed;
    opacity: 0.5;
}

.nav-btn.disabled:hover,
.nav-link.disabled:hover {
    background: var(--bg-white);
    border-color: var(--border-color);
    color: var(--text-tertiary);
    transform: none;
    box-shadow: none;
}

.nav-prev {
    margin-right: auto;
}

.nav-next {
    margin-left: auto;
}

/* Nav text sub-elements */
.nav-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-label {
    font-size: 12px;
    color: var(--text-tertiary);
    font-weight: 400;
}

.nav-title {
    font-size: 14px;
    font-weight: 500;
}

/* ===========================================
   文章底部操作
   =========================================== */

.article-footer {
    margin-top: 40px;
}

.article-actions {
    display: flex;
    justify-content: center;
    margin-bottom: 32px;
}

.share-buttons {
    display: flex;
    gap: 12px;
}

.share-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.share-btn:hover {
    background: var(--accent-light);
    color: var(--accent-color);
    transform: translateY(-2px);
}

/* ===========================================
   反馈区域
   =========================================== */

.feedback-section {
    background: var(--accent-gradient);
    color: var(--text-white);
    padding: 40px;
    border-radius: var(--radius-lg);
    text-align: center;
    margin: 40px 0;
}

.feedback-section h3 {
    color: var(--text-white);
    margin-bottom: 15px;
    font-size: 20px;
}

.feedback-section p {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 0;
}

.feedback-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

.feedback-btn {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-white);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 10px 24px;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-normal);
}

.feedback-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

/* ===========================================
   侧边栏
   =========================================== */

.article-sidebar {
    display: none;
}

.toc-widget {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 24px;
    margin-bottom: 24px;
}

.toc-widget h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.toc-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toc-list li {
    padding-left: 0;
}

.toc-list li::before {
    display: none;
}

.toc-list a {
    font-size: 14px;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    display: block;
    transition: all var(--transition-fast);
    border-left: 2px solid transparent;
}

.toc-list a:hover,
.toc-list a.active {
    color: var(--accent-color);
    background: var(--accent-bg);
    border-left-color: var(--accent-color);
}

/* Article tags */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.article-tags .tag {
    display: inline-block;
    padding: 6px 14px;
    font-size: 13px;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.article-tags .tag:hover {
    background: var(--accent-light);
    color: var(--accent-color);
}

/* ===========================================
   相关文章
   =========================================== */

.related-articles h3,
.related-articles h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.article-card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color-light);
    transition: all var(--transition-normal);
}

.article-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-color);
}

.article-card h4 {
    margin-bottom: 8px;
}

.article-card h4 a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.article-card h4 a:hover {
    color: var(--accent-color);
}

.article-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===========================================
   文章内容包裹
   =========================================== */

.article-content-wrapper {
    max-width: 100%;
}

/* ===========================================
   响应式设计
   =========================================== */

@media (max-width: 768px) {
    main {
        padding-top: 64px;
        min-height: calc(100vh - 64px);
    }

    .article-container {
        padding: 32px var(--space-sm) 60px;
    }

    .article-title {
        font-size: 30px;
    }

    .article-content {
        padding: 28px 20px;
        border-radius: var(--radius-md);
    }

    .article-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .content-section h2,
    .article-content h2 {
        font-size: 20px;
    }

    .content-section h3,
    .article-content h3 {
        font-size: 17px;
    }

    .article-nav {
        flex-direction: column;
        gap: 12px;
    }

    .nav-btn,
    .nav-link {
        width: 100%;
        justify-content: center;
    }

    .nav-prev,
    .nav-next {
        margin: 0;
    }

    .feedback-section {
        padding: 32px 20px;
        border-radius: var(--radius-md);
    }

    .feedback-buttons {
        flex-direction: column;
        align-items: center;
    }

    .articles-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    main {
        padding-top: 56px;
        min-height: calc(100vh - 56px);
    }

    .article-container {
        padding: 24px var(--space-sm) 48px;
    }

    .article-title {
        font-size: 26px;
    }

    .article-content {
        padding: 20px 16px;
    }

    .article-intro {
        font-size: 15px;
        padding: 16px;
    }

    .content-section p,
    .content-section li,
    .article-content p,
    .article-content li {
        font-size: 14px;
    }

    .tip-box {
        padding: 16px;
    }

    .nav-btn,
    .nav-link {
        padding: 10px 16px;
        font-size: 13px;
    }
}