/* ==========================================================================
   HotTea Official Website - Documentation Stylesheet
   ========================================================================== */

.docs-layout {
  display: grid;
  grid-template-columns: 280px 1fr 220px;
  gap: 40px;
  padding: 40px 0 80px 0;
  min-height: calc(100vh - var(--nav-height) - 150px);
}

/* Sidebar Navigation */
.docs-sidebar {
  position: sticky;
  top: calc(var(--nav-height) + 24px);
  max-height: calc(100vh - var(--nav-height) - 48px);
  overflow-y: auto;
  padding-right: 16px;
}

.docs-search-container {
  margin-bottom: 24px;
}

.docs-search-input {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: border-color var(--transition-fast);
}

.docs-search-input:focus {
  border-color: var(--accent-primary);
  outline: none;
}

.docs-nav-group {
  margin-bottom: 24px;
}

.docs-nav-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.docs-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.docs-nav-link {
  display: block;
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  border-left: 2px solid transparent;
}

.docs-nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.docs-nav-link.active {
  color: var(--accent-primary);
  background: var(--accent-subtle);
  border-left-color: var(--accent-primary);
  font-weight: 600;
}

/* Main Documentation Article */
.docs-content {
  min-width: 0;
}

.docs-header {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 24px;
  margin-bottom: 32px;
}

.docs-title {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.docs-lead {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.docs-body h2 {
  font-size: 1.75rem;
  margin-top: 48px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.docs-body h3 {
  font-size: 1.3rem;
  margin-top: 32px;
  margin-bottom: 12px;
}

.docs-body p, .docs-body ul, .docs-body ol {
  margin-bottom: 1.25rem;
  line-height: 1.7;
}

.docs-body ul, .docs-body ol {
  padding-left: 24px;
  color: var(--text-secondary);
}

.docs-body li {
  margin-bottom: 6px;
}

.docs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.9rem;
}

.docs-table th, .docs-table td {
  padding: 12px 16px;
  border: 1px solid var(--border-subtle);
  text-align: left;
}

.docs-table th {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-weight: 600;
}

.docs-table tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.015);
}

/* Table of Contents */
.docs-toc {
  position: sticky;
  top: calc(var(--nav-height) + 24px);
  max-height: calc(100vh - var(--nav-height) - 48px);
  overflow-y: auto;
  font-size: 0.85rem;
}

.toc-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-left: 1px solid var(--border-subtle);
  padding-left: 12px;
}

.toc-link {
  color: var(--text-muted);
  transition: color var(--transition-fast);
  display: block;
  line-height: 1.4;
}

.toc-link:hover, .toc-link.active {
  color: var(--accent-primary);
}

/* Responsive Docs */
.docs-nav-toggle-btn {
  display: none;
}

@media (max-width: 1024px) {
  .docs-layout {
    grid-template-columns: 240px 1fr;
  }
  .docs-toc {
    display: none;
  }
}

@media (max-width: 768px) {
  .docs-layout {
    grid-template-columns: 1fr;
  }
  .docs-sidebar {
    position: static;
    max-height: none;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 16px;
    padding-right: 0;
  }
  .docs-nav-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    margin-bottom: 16px;
    min-height: 46px;
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
  }
  .docs-nav-toggle-btn:hover {
    border-color: var(--accent-primary);
  }
  .docs-sidebar-inner {
    display: none;
  }
  .docs-sidebar-inner.open {
    display: block;
    animation: fadeIn 0.2s ease;
  }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}