/* ========================================
   GOM 游戏引擎网站 - 技术文档页面样式
   蓝白经典主题 - 科技感升级版
   ======================================== */

/* ==========================================
   1. Hero 区域
   ========================================== */
.docs-hero {
  position: relative;
  padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-3xl);
  overflow: hidden;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, #e8f0fe 50%, var(--bg-primary) 100%);
}

.docs-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.docs-hero__content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.docs-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: #2563eb;
  margin-bottom: var(--space-xl);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.1);
}

.docs-hero__title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--space-lg);
  background: linear-gradient(135deg, #1e40af 0%, #2563eb 50%, #06b6d4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.docs-hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-2xl);
}

/* 搜索框 */
.docs-search {
  max-width: 600px;
  margin: 0 auto;
}

.docs-search__wrapper {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: var(--radius-xl);
  padding: var(--space-xs);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.08);
}

.docs-search__wrapper:focus-within {
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1), 0 8px 30px rgba(59, 130, 246, 0.12);
}

.docs-search__icon {
  flex-shrink: 0;
  margin-left: var(--space-md);
  color: #2563eb;
}

.docs-search__input {
  flex: 1;
  padding: var(--space-md);
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: var(--font-size-base);
  outline: none;
}

.docs-search__input::placeholder {
  color: var(--text-muted);
}

.docs-search__btn {
  flex-shrink: 0;
}

.docs-search__tags {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  flex-wrap: wrap;
  justify-content: center;
}

.docs-search__hint {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.docs-search__tag {
  display: inline-flex;
  padding: var(--space-xs) var(--space-md);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.docs-search__tag:hover {
  border-color: rgba(59, 130, 246, 0.4);
  color: #2563eb;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.12);
}

/* ==========================================
   2. 文档分类区域
   ========================================== */
.docs-categories {
  padding: var(--space-3xl) 0;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, #f8fafc 100%);
  position: relative;
}

.docs-categories::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.2), transparent);
}

.docs-categories__header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-3xl);
}

.docs-categories__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, #1e40af 0%, #2563eb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.docs-categories__desc {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
}

.docs-categories__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

/* 分类卡片 */
.docs-category-card {
  position: relative;
  padding: var(--space-2xl);
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(59, 130, 246, 0.08);
  border-radius: var(--radius-2xl);
  backdrop-filter: blur(10px);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.docs-category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #2563eb, #06b6d4);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.docs-category-card:hover {
  transform: translateY(-8px);
  border-color: rgba(59, 130, 246, 0.2);
  box-shadow: 0 20px 50px rgba(59, 130, 246, 0.12);
}

.docs-category-card:hover::before {
  transform: scaleX(1);
}

.docs-category-card__icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12) 0%, rgba(6, 182, 212, 0.08) 100%);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-lg);
  color: #2563eb;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.docs-category-card:hover .docs-category-card__icon {
  background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
  color: var(--white);
  transform: scale(1.1);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

.docs-category-card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.docs-category-card__desc {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-xl);
}

.docs-category-card__list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-xl) 0;
}

.docs-category-card__list li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(59, 130, 246, 0.06);
  transition: all 0.3s ease;
}

.docs-category-card__list li:last-child {
  border-bottom: none;
}

.docs-category-card__list li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  border-radius: 50%;
  flex-shrink: 0;
}

.docs-category-card__list li:hover {
  color: #2563eb;
  padding-left: var(--space-sm);
}

.docs-category-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: #2563eb;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.docs-category-card__link:hover {
  gap: var(--space-md);
}

.docs-category-card__link svg {
  transition: transform 0.3s ease;
}

.docs-category-card__link:hover svg {
  transform: translateX(4px);
}

/* ==========================================
   3. API参考区域
   ========================================== */
.docs-api {
  padding: var(--space-3xl) 0;
  background: linear-gradient(180deg, #f8fafc 0%, var(--bg-secondary) 100%);
  position: relative;
}

.docs-api::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.2), transparent);
}

.docs-api__header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-3xl);
}

.docs-api__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, #1e40af 0%, #2563eb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.docs-api__desc {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
}

.docs-api__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.docs-api-card {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(59, 130, 246, 0.08);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  backdrop-filter: blur(10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.docs-api-card:hover {
  border-color: rgba(59, 130, 246, 0.2);
  box-shadow: 0 12px 35px rgba(59, 130, 246, 0.1);
  transform: translateY(-4px);
}

.docs-api-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding-bottom: var(--space-md);
  margin-bottom: var(--space-md);
  border-bottom: 1px solid rgba(59, 130, 246, 0.1);
}

.docs-api-card__icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12) 0%, rgba(6, 182, 212, 0.08) 100%);
  border-radius: var(--radius-md);
  color: #2563eb;
}

.docs-api-card__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.docs-api-card__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.docs-api-card__list li {
  margin-bottom: var(--space-sm);
}

.docs-api-card__list li:last-child {
  margin-bottom: 0;
}

.docs-api-card__list a {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: rgba(59, 130, 246, 0.04);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.docs-api-card__list a::before {
  content: '';
  width: 6px;
  height: 6px;
  background: #2563eb;
  border-radius: 50%;
  opacity: 0.5;
  transition: all 0.3s ease;
}

.docs-api-card__list a:hover {
  color: #2563eb;
  background: rgba(59, 130, 246, 0.1);
  padding-left: var(--space-lg);
}

.docs-api-card__list a:hover::before {
  opacity: 1;
}

/* ==========================================
   4. 帮助区域
   ========================================== */
.docs-help {
  padding: var(--space-3xl) 0;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, #e8f0fe 100%);
  position: relative;
}

.docs-help::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.2), transparent);
}

.docs-help__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2xl);
  padding: var(--space-2xl);
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-2xl);
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.06);
}

.docs-help__icon {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12) 0%, rgba(6, 182, 212, 0.08) 100%);
  border-radius: var(--radius-xl);
  color: #2563eb;
  flex-shrink: 0;
}

.docs-help__info {
  flex: 1;
}

.docs-help__info h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.docs-help__info p {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

.docs-help__actions {
  display: flex;
  gap: var(--space-md);
  flex-shrink: 0;
}

/* ==========================================
   5. 响应式设计
   ========================================== */
@media (max-width: 1024px) {
  .docs-categories__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .docs-api__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .docs-hero__title {
    font-size: var(--font-size-3xl);
  }
  
  .docs-hero__subtitle {
    font-size: var(--font-size-base);
  }
  
  .docs-search__wrapper {
    flex-direction: column;
    padding: var(--space-sm);
  }
  
  .docs-search__icon {
    display: none;
  }
  
  .docs-search__input {
    width: 100%;
    text-align: center;
  }
  
  .docs-search__btn {
    width: 100%;
  }
  
  .docs-categories__grid {
    grid-template-columns: 1fr;
  }
  
  .docs-api__grid {
    grid-template-columns: 1fr;
  }
  
  .docs-help__content {
    flex-direction: column;
    text-align: center;
  }
  
  .docs-help__actions {
    flex-direction: column;
    width: 100%;
  }
  
  .docs-help__actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .docs-hero__title {
    font-size: var(--font-size-2xl);
  }
  
  .docs-category-card {
    padding: var(--space-xl);
  }
  
  .docs-category-card__icon {
    width: 48px;
    height: 48px;
  }
  
  .docs-help__icon {
    width: 60px;
    height: 60px;
  }
}

/* ==========================================
   6. 文档内容区域（新增）
   ========================================== */
.docs-content {
  padding: var(--space-3xl) 0;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, #f8fafc 100%);
}

.docs-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

/* 侧边栏 */
.docs-sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--space-lg));
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  backdrop-filter: blur(10px);
}

.docs-sidebar__header {
  padding-bottom: var(--space-md);
  margin-bottom: var(--space-md);
  border-bottom: 1px solid rgba(59, 130, 246, 0.1);
}

.docs-sidebar__header h3 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.docs-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.docs-nav__item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  transition: all 0.3s ease;
}

.docs-nav__item:hover {
  background: rgba(59, 130, 246, 0.08);
  color: #2563eb;
}

.docs-nav__item--active {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12) 0%, rgba(6, 182, 212, 0.08) 100%);
  color: #2563eb;
  font-weight: var(--font-weight-medium);
}

.docs-nav__count {
  margin-left: auto;
  padding: 2px 8px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  color: #2563eb;
}

/* 主内容区 */
.docs-main {
  min-height: 400px;
}

/* 文档列表 */
.docs-list__header {
  margin-bottom: var(--space-xl);
}

.docs-list__header h2 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.docs-list__search-hint {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.docs-list__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

/* 文档卡片 */
.docs-card {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(59, 130, 246, 0.08);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  transition: all 0.3s ease;
}

.docs-card:hover {
  border-color: rgba(59, 130, 246, 0.2);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.1);
  transform: translateY(-2px);
}

.docs-card__header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.docs-card__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12) 0%, rgba(6, 182, 212, 0.08) 100%);
  border-radius: var(--radius-md);
  color: #2563eb;
  flex-shrink: 0;
}

.docs-card__info {
  flex: 1;
  min-width: 0;
}

.docs-card__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-xs);
}

.docs-card__title a {
  color: var(--text-primary);
  transition: color 0.3s ease;
}

.docs-card__title a:hover {
  color: #2563eb;
}

.docs-card__category {
  display: inline-block;
  padding: 2px 10px;
  background: rgba(59, 130, 246, 0.08);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  color: #2563eb;
}

.docs-card__meta {
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid rgba(59, 130, 246, 0.06);
}

.docs-card__date {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

/* 空状态 */
.docs-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-3xl);
  background: rgba(255, 255, 255, 0.95);
  border: 1px dashed rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-xl);
}

.docs-empty svg {
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.docs-empty p {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

/* 文档详情 */
.docs-detail {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(59, 130, 246, 0.08);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.docs-detail__header {
  padding: var(--space-xl);
  border-bottom: 1px solid rgba(59, 130, 246, 0.1);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.04) 0%, rgba(6, 182, 212, 0.02) 100%);
}

.docs-detail__back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  color: #2563eb;
  margin-bottom: var(--space-md);
  transition: gap 0.3s ease;
}

.docs-detail__back:hover {
  gap: var(--space-sm);
}

.docs-detail__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.docs-detail__meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.docs-detail__tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: #2563eb;
}

.docs-detail__date {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.docs-detail__body {
  padding: var(--space-xl);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--text-primary);
}

.docs-detail__body h1,
.docs-detail__body h2,
.docs-detail__body h3 {
  margin: var(--space-xl) 0 var(--space-md);
  color: var(--text-primary);
}

.docs-detail__body p {
  margin-bottom: var(--space-md);
}

.docs-detail__body pre,
.docs-detail__body code {
  background: #1e293b;
  color: #e2e8f0;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}

.docs-detail__body pre {
  padding: var(--space-lg);
  overflow-x: auto;
  margin: var(--space-lg) 0;
}

.docs-detail__body table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
}

.docs-detail__body th,
.docs-detail__body td {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid rgba(59, 130, 246, 0.1);
  text-align: left;
}

.docs-detail__body th {
  background: rgba(59, 130, 246, 0.05);
  font-weight: var(--font-weight-semibold);
}

.docs-detail__body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

/* 分页 */
.docs-pagination {
  margin-top: var(--space-2xl);
  display: flex;
  justify-content: center;
}

/* 响应式补充 */
@media (max-width: 1024px) {
  .docs-layout {
    grid-template-columns: 1fr;
  }
  
  .docs-sidebar {
    position: static;
  }
  
  .docs-nav {
    flex-direction: row;
    flex-wrap: wrap;
  }
  
  .docs-list__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .docs-nav__item {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
  }
  
  .docs-detail__header {
    padding: var(--space-lg);
  }
  
  .docs-detail__body {
    padding: var(--space-lg);
  }
}

/* ==========================================
   文档弹窗样式
   ========================================== */
.docs-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.docs-modal--active {
  opacity: 1;
  visibility: visible;
}

.docs-modal__overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.docs-modal__container {
  position: relative;
  width: calc(100vw - 200px);
  max-width: 1400px;
  height: calc(100vh - 200px);
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
  transform: scale(0.95) translateY(20px);
  transition: transform 0.3s ease;
}

.docs-modal--active .docs-modal__container {
  transform: scale(1) translateY(0);
}

.docs-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--border-primary);
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.docs-modal__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin: 0;
}

.docs-modal__close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.05);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-secondary);
}

.docs-modal__close:hover {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.docs-modal__body {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.docs-modal__sidebar {
  width: 320px;
  flex-shrink: 0;
  border-right: 1px solid var(--border-primary);
  background: #fafbfc;
  display: flex;
  flex-direction: column;
}

/* 搜索框 */
.docs-modal__search {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: white;
  border-bottom: 1px solid var(--border-primary);
  position: sticky;
  top: 0;
  z-index: 1;
}

.docs-modal__search .icon {
  flex-shrink: 0;
  color: var(--text-muted);
}

.docs-modal__search input {
  flex: 1;
  border: none;
  outline: none;
  font-size: var(--font-size-sm);
  background: transparent;
  color: var(--text-primary);
}

.docs-modal__search input::placeholder {
  color: var(--text-muted);
}

.docs-modal__search-clear {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: var(--bg-tertiary);
  border-radius: 50%;
  cursor: pointer;
  color: var(--text-muted);
  transition: all 0.2s;
}

.docs-modal__search-clear:hover {
  background: var(--bg-quaternary);
  color: var(--text-primary);
}

/* 列表容器 */
.docs-modal__list-wrapper {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md);
}

/* 分类折叠 */
.docs-modal__category {
  margin-bottom: var(--space-sm);
  border-radius: var(--radius-md);
  background: white;
  border: 1px solid var(--border-primary);
  overflow: hidden;
}

.docs-modal__category-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  user-select: none;
  transition: background 0.2s;
}

.docs-modal__category-header:hover {
  background: var(--bg-secondary);
}

.docs-modal__category-arrow {
  flex-shrink: 0;
  transition: transform 0.2s;
  color: var(--text-muted);
}

.docs-modal__category--expanded .docs-modal__category-arrow {
  transform: rotate(90deg);
}

.docs-modal__category-name {
  flex: 1;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.docs-modal__category-count {
  flex-shrink: 0;
  min-width: 24px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-xs);
  background: var(--bg-tertiary);
  border-radius: 10px;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.docs-modal__category .docs-modal__list {
  display: none;
  border-top: 1px solid var(--border-primary);
  background: #fafbfc;
}

.docs-modal__category--expanded .docs-modal__list {
  display: block;
}

/* 搜索高亮 */
.docs-modal__highlight {
  background: #fef08a;
  color: inherit;
  padding: 0 2px;
  border-radius: 2px;
}

.docs-modal__content {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-xl);
  background: var(--bg-primary);
}

/* 文档列表 */
.docs-modal__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.docs-modal__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-md);
  margin-bottom: var(--space-xs);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.docs-modal__item:hover {
  background: rgba(59, 130, 246, 0.05);
  border-color: rgba(59, 130, 246, 0.15);
}

.docs-modal__item--active {
  background: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.3);
}

.docs-modal__item-num {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--text-muted);
}

.docs-modal__item--active .docs-modal__item-num {
  background: #2563eb;
  color: white;
}

.docs-modal__item-title {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  line-height: 1.5;
  word-break: break-word;
}

/* 文档详情 */
.docs-modal__detail {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.docs-modal__breadcrumb {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  display: inline-block;
}

.docs-modal__detail-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin: 0 0 var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 2px solid #2563eb;
}

.docs-modal__detail-content {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

.docs-modal__detail-content p {
  margin-bottom: var(--space-md);
}

.docs-modal__detail-content code {
  background: #f1f5f9;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 0.9em;
}

.docs-modal__detail-content pre {
  background: #1e293b;
  color: #e2e8f0;
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: var(--space-lg) 0;
}

.docs-modal__detail-content pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* 加载/空状态/错误 */
.docs-modal__loading,
.docs-modal__empty,
.docs-modal__error,
.docs-modal__placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-3xl);
  color: var(--text-muted);
  text-align: center;
  height: 100%;
}

.docs-modal__spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-primary);
  border-top-color: #2563eb;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.docs-modal__error {
  color: #ef4444;
}

.docs-modal__placeholder .icon {
  color: #cbd5e1;
}

/* 空状态样式 */
.docs-empty {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-3xl);
  color: var(--text-muted);
  text-align: center;
}

.docs-empty .icon {
  color: #cbd5e1;
}

/* 响应式 - 弹窗 */
@media (max-width: 768px) {
  .docs-modal__container {
    width: 95vw;
    height: 90vh;
  }
  
  .docs-modal__body {
    flex-direction: column;
  }
  
  .docs-modal__sidebar {
    width: 100%;
    height: 40%;
    border-right: none;
    border-bottom: 1px solid var(--border-primary);
  }
  
  .docs-modal__content {
    height: 60%;
  }
  
  .docs-modal__header {
    padding: var(--space-md) var(--space-lg);
  }
  
  .docs-modal__title {
    font-size: var(--font-size-lg);
  }
}