/* ============================================
   Transmit 中文官网 - 文档页面通用样式
   ============================================ */

/* 页面头部 */
.doc-header {
    padding: 120px 0 48px;
    background: linear-gradient(180deg, #0d0d1a 0%, #1a1a2e 100%);
    color: #ffffff;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.doc-header::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(ellipse, rgba(112, 131, 255, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.doc-header h1 {
    font-size: 2.4rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    position: relative;
}

.doc-header-desc {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.5);
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

/* 文档主体 */
.doc-body {
    padding: 64px 0 80px;
    background: #ffffff;
}

.doc-content {
    max-width: 860px;
    margin: 0 auto;
}

/* 章节 */
.doc-section {
    margin-bottom: 56px;
}

.doc-section:last-child {
    margin-bottom: 0;
}

/* 标题 */
.doc-content h2 {
    font-size: 1.65rem;
    font-weight: 800;
    color: var(--color-dark);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-bg-light);
    letter-spacing: -0.01em;
    line-height: 1.35;
    position: relative;
}

.doc-content h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 48px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 1px;
}

.doc-content h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-dark);
    margin: 32px 0 12px;
    line-height: 1.4;
}

.doc-content h4 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-dark-light);
    margin: 24px 0 10px;
}

/* 段落 */
.doc-content p {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.9;
    margin-bottom: 16px;
}

.doc-content p:last-child {
    margin-bottom: 0;
}

.doc-content strong {
    color: var(--color-dark);
    font-weight: 600;
}

/* 链接 */
.doc-content a {
    color: var(--color-primary);
    text-decoration: none;
    border-bottom: 1px solid rgba(112, 131, 255, 0.2);
    transition: all 0.2s ease;
}

.doc-content a:hover {
    color: var(--color-primary-dark);
    border-bottom-color: var(--color-primary);
}

/* 列表 */
.doc-content ul,
.doc-content ol {
    padding-left: 24px;
    margin-bottom: 16px;
}

.doc-content li {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.9;
    margin-bottom: 6px;
}

.doc-content li strong {
    color: var(--color-dark);
}

/* 图片 */
.doc-img {
    margin: 24px 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border-light);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.doc-img img {
    width: 100%;
    display: block;
}

.doc-img-caption {
    font-size: 0.82rem;
    color: var(--color-text-light);
    text-align: center;
    padding: 10px 16px;
    background: var(--color-bg-light);
}

/* 引用/提示 */
.doc-note {
    padding: 16px 20px;
    background: var(--color-bg-light);
    border-left: 3px solid var(--color-primary);
    border-radius: 0 10px 10px 0;
    margin: 20px 0;
}

.doc-note p {
    font-size: 0.92rem;
    color: var(--color-text-secondary);
    margin: 0;
    line-height: 1.7;
}

.doc-note-warn {
    border-left-color: #e67e22;
    background: #fef9f3;
}

.doc-note-warn p {
    color: #7a5c3a;
}

/* 分隔线 */
.doc-divider {
    height: 1px;
    background: var(--color-border-light);
    margin: 40px 0;
    border: none;
}

/* 键盘快捷键 */
.doc-kbd {
    display: inline-block;
    padding: 2px 8px;
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 0.82rem;
    font-family: var(--font-mono);
    color: var(--color-dark-light);
    line-height: 1.5;
    white-space: nowrap;
}

/* 代码 */
.doc-content code {
    display: inline-block;
    padding: 1px 7px;
    background: var(--color-bg-light);
    border: 1px solid var(--color-border-light);
    border-radius: 5px;
    font-size: 0.88rem;
    font-family: var(--font-mono);
    color: var(--color-primary-dark);
}

/* 菜单项卡片 */
.doc-menu-item {
    display: flex;
    align-items: flex-start;
    gap: 28px;
    padding: 20px 0;
    border-bottom: 1px solid var(--color-border-light);
}

.doc-menu-item:last-child {
    border-bottom: none;
}

.doc-menu-text {
    flex: 1;
    min-width: 0;
}

.doc-menu-text h4 {
    margin-top: 0;
}

.doc-menu-img {
    flex-shrink: 0;
    max-width: 320px;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--color-border-light);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}

.doc-menu-img img {
    width: 100%;
    display: block;
}

/* 版本号标签 */
.doc-version-tag {
    display: inline-block;
    padding: 3px 12px;
    background: rgba(112, 131, 255, 0.08);
    border: 1px solid rgba(112, 131, 255, 0.12);
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 8px;
}

/* 日期标签 */
.doc-date {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 12px;
}

/* 更新日志分类标签 */
.doc-changelog-label {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.doc-changelog-label.added { background: #e8f5e9; color: #2e7d32; }
.doc-changelog-label.fixed { background: #fff3e0; color: #e65100; }
.doc-changelog-label.improved { background: #e3f2fd; color: #1565c0; }
.doc-changelog-label.new { background: #ede7f6; color: #4527a0; }

/* 功能网格 */
.doc-feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 24px 0;
}

.doc-feature-card {
    padding: 24px;
    background: var(--color-bg-light);
    border-radius: 14px;
    border: 1px solid var(--color-border-light);
    transition: all 0.25s ease;
}

.doc-feature-card:hover {
    border-color: rgba(112, 131, 255, 0.15);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
    transform: translateY(-2px);
}

.doc-feature-card h4 {
    margin: 0 0 6px;
    font-size: 1rem;
    color: var(--color-dark);
}

.doc-feature-card p {
    font-size: 0.9rem;
    margin: 0;
}

/* 服务列表标签 */
.doc-tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 16px 0;
}

.doc-tag {
    display: inline-block;
    padding: 5px 14px;
    background: var(--color-bg-light);
    border: 1px solid var(--color-border-light);
    border-radius: 8px;
    font-size: 0.84rem;
    color: var(--color-text-secondary);
}

/* 侧边导航 (目录) */
.doc-layout {
    display: flex;
    gap: 48px;
    align-items: flex-start;
}

.doc-sidebar {
    position: sticky;
    top: calc(var(--nav-height) + 24px);
    flex-shrink: 0;
    width: 220px;
}

.doc-sidebar-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 12px;
}

.doc-sidebar-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.doc-sidebar-links li {
    margin-bottom: 2px;
}

.doc-sidebar-links a {
    display: block;
    padding: 6px 12px;
    font-size: 0.84rem;
    color: var(--color-text-light);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s ease;
    border: none;
}

.doc-sidebar-links a:hover {
    color: var(--color-primary);
    background: rgba(112, 131, 255, 0.04);
}

/* 页面间导航 */
.doc-page-nav {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-top: 64px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border-light);
}

.doc-page-nav a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--color-bg-light);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: all 0.25s ease;
}

.doc-page-nav a:hover {
    border-color: rgba(112, 131, 255, 0.2);
    color: var(--color-primary);
    background: rgba(112, 131, 255, 0.03);
}

.doc-page-nav svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* 辅助类 */
.doc-update-date {
    margin-top: 32px;
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.doc-note-bottom {
    margin-top: 48px;
}

/* 响应式 */
@media (max-width: 1024px) {
    .doc-sidebar { display: none; }
    .doc-layout { flex-direction: column; }
}

@media (max-width: 768px) {
    .doc-header { padding: 100px 0 36px; }
    .doc-header h1 { font-size: 1.8rem; }
    .doc-body { padding: 40px 0 60px; }
    .doc-content h2 { font-size: 1.4rem; }
    .doc-menu-item { flex-direction: column; gap: 16px; }
    .doc-menu-img { max-width: 100%; }
    .doc-feature-grid { grid-template-columns: 1fr; }
    .doc-page-nav { flex-direction: column; }
}