/* 🦕 Diplodocs Modern Documentation Theme */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-sidebar: #f8fafc;
  --bg-code: #f1f5f9;
  --bg-card: #ffffff;
  --border-color: #e2e8f0;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --accent: #10b981;
  --accent-hover: #059669;
  --accent-light: #ecfdf5;
  --accent-text: #065f46;

  --sidebar-width: 270px;
  --toc-width: 230px;
  --header-height: 64px;
  --max-content-width: 820px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

html.dark {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-sidebar: #090d16;
  --bg-code: #1e293b;
  --bg-card: #1e293b;
  --border-color: #334155;
  
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  
  --accent: #10b981;
  --accent-hover: #34d399;
  --accent-light: rgba(16, 185, 129, 0.15);
  --accent-text: #6ee7b7;
}

/* Global Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover {
  text-decoration: underline;
}

/* Layout */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-height);
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}
.brand-logo:hover {
  text-decoration: none;
}

.version-badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.12rem 0.5rem;
  border-radius: 9999px;
  background-color: var(--accent-light);
  color: var(--accent-text);
  border: 1px solid var(--accent);
  letter-spacing: 0.02em;
}

.github-repo-card {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.825rem;
  transition: all 0.15s ease;
}
.github-repo-card:hover {
  border-color: var(--accent);
  text-decoration: none;
}
.repo-meta-col {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.repo-name {
  font-weight: 600;
  color: var(--text-primary);
}
.repo-stats-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}
.repo-stars, .repo-forks {
  display: flex;
  align-items: center;
  gap: 0.2rem;
}
.repo-stars svg {
  color: #eab308;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.search-trigger-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.15s ease;
}
.search-trigger-btn:hover {
  border-color: var(--accent);
  color: var(--text-primary);
}

.kbd-shortcut {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

.theme-toggle-btn, .github-link-btn, .menu-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.45rem;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}
.theme-toggle-btn:hover, .github-link-btn:hover, .menu-toggle-btn:hover {
  color: var(--text-primary);
  background-color: var(--bg-secondary);
}

.menu-toggle-btn {
  display: none;
}

/* Main Container */
.main-wrapper {
  display: flex;
  flex: 1;
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
}

/* Sidebar Left */
.sidebar-left {
  width: var(--sidebar-width);
  flex-shrink: 0;
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  overflow-y: auto;
  border-right: 1px solid var(--border-color);
  padding: 1.5rem 1rem;
  background-color: var(--bg-sidebar);
}

.nav-section-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
  padding-left: 0.5rem;
}

.nav-list {
  list-style: none;
}

.nav-item {
  margin-bottom: 0.2rem;
}

.nav-link {
  display: block;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.15s ease;
  text-decoration: none;
}
.nav-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  text-decoration: none;
}
.nav-link.active {
  color: var(--accent);
  background-color: var(--accent-light);
  font-weight: 600;
}

/* Main Content Area */
.content-area {
  flex: 1;
  min-width: 0;
  padding: 2.5rem 3rem;
  display: flex;
  justify-content: center;
}

.article-content {
  width: 100%;
  max-width: var(--max-content-width);
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}
.breadcrumbs a {
  color: var(--text-secondary);
  text-decoration: none;
}
.breadcrumbs a:hover {
  color: var(--accent);
}

/* Page Meta Strip (Reading time & top edit link) */
.page-meta-strip {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1.25rem;
  font-size: 0.825rem;
  color: var(--text-muted);
}
.meta-pill {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.meta-pill.edit-link-top {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}
.meta-pill.edit-link-top:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* Article Footer Edit Button */
.article-footer-edit {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}
.edit-page-button {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
}
.edit-page-button:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* Typography in Content */
.markdown-body h1 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.markdown-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  scroll-margin-top: calc(var(--header-height) + 1rem);
}

.markdown-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
  scroll-margin-top: calc(var(--header-height) + 1rem);
}

.markdown-body p {
  margin-bottom: 1.25rem;
  color: var(--text-primary);
  font-size: 1rem;
  line-height: 1.7;
}

.markdown-body ul, .markdown-body ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.markdown-body li {
  margin-bottom: 0.35rem;
}

.markdown-body hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 2.5rem 0;
}

.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.markdown-body th, .markdown-body td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  text-align: left;
}

.markdown-body th {
  background-color: var(--bg-secondary);
  font-weight: 600;
}

.markdown-body blockquote {
  border-left: 4px solid var(--border-color);
  padding-left: 1rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  font-style: italic;
}

/* Callouts / Admonitions */
.callout {
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  border: 1px solid transparent;
  overflow: hidden;
}

.callout-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1rem;
  font-weight: 600;
  font-size: 0.9rem;
}

.callout-icon {
  display: flex;
  align-items: center;
}

.callout-body {
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
}
.callout-body p:last-child {
  margin-bottom: 0;
}

.callout-note {
  border-color: #93c5fd;
  background-color: #eff6ff;
}
.callout-note .callout-header {
  background-color: #dbeafe;
  color: #1e40af;
}
.callout-note .callout-body {
  color: #1e3a8a;
}
html.dark .callout-note {
  border-color: #1e3a8a;
  background-color: rgba(30, 58, 138, 0.2);
}
html.dark .callout-note .callout-header {
  background-color: rgba(30, 58, 138, 0.4);
  color: #93c5fd;
}
html.dark .callout-note .callout-body {
  color: #dbeafe;
}

.callout-tip {
  border-color: #86efac;
  background-color: #f0fdf4;
}
.callout-tip .callout-header {
  background-color: #dcfce7;
  color: #166534;
}
.callout-tip .callout-body {
  color: #14532d;
}
html.dark .callout-tip {
  border-color: #166534;
  background-color: rgba(22, 101, 52, 0.2);
}
html.dark .callout-tip .callout-header {
  background-color: rgba(22, 101, 52, 0.4);
  color: #86efac;
}
html.dark .callout-tip .callout-body {
  color: #dcfce7;
}

.callout-warning {
  border-color: #fcd34d;
  background-color: #fffbeb;
}
.callout-warning .callout-header {
  background-color: #fef3c7;
  color: #92400e;
}
.callout-warning .callout-body {
  color: #78350f;
}
html.dark .callout-warning {
  border-color: #78350f;
  background-color: rgba(120, 53, 15, 0.2);
}
html.dark .callout-warning .callout-header {
  background-color: rgba(120, 53, 15, 0.4);
  color: #fcd34d;
}
html.dark .callout-warning .callout-body {
  color: #fef3c7;
}

.callout-danger {
  border-color: #fca5a5;
  background-color: #fef2f2;
}
.callout-danger .callout-header {
  background-color: #fee2e2;
  color: #991b1b;
}
.callout-danger .callout-body {
  color: #7f1d1d;
}
html.dark .callout-danger {
  border-color: #7f1d1d;
  background-color: rgba(127, 29, 29, 0.2);
}
html.dark .callout-danger .callout-header {
  background-color: rgba(127, 29, 29, 0.4);
  color: #fca5a5;
}
html.dark .callout-danger .callout-body {
  color: #fee2e2;
}

.callout-important {
  border-color: #d8b4fe;
  background-color: #faf5ff;
}
.callout-important .callout-header {
  background-color: #f3e8ff;
  color: #6b21a8;
}
.callout-important .callout-body {
  color: #581c87;
}
html.dark .callout-important {
  border-color: #581c87;
  background-color: rgba(88, 28, 135, 0.2);
}
html.dark .callout-important .callout-header {
  background-color: rgba(88, 28, 135, 0.4);
  color: #d8b4fe;
}
html.dark .callout-important .callout-body {
  color: #f3e8ff;
}

/* Code Blocks */
.code-block {
  border-radius: var(--radius-md);
  background-color: var(--bg-code);
  border: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.4rem 0.85rem;
  background-color: rgba(0, 0, 0, 0.03);
  border-bottom: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}
html.dark .code-header {
  background-color: rgba(255, 255, 255, 0.03);
}

.copy-button {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 4px;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  font-size: 0.75rem;
  transition: all 0.15s ease;
}
.copy-button:hover {
  background-color: var(--bg-card);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.code-content {
  padding: 1rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.5;
}

.code-content pre {
  margin: 0;
}

/* Code Tabs */
.code-tabs {
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.tab-headers {
  display: flex;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  overflow-x: auto;
}

.tab-button {
  padding: 0.5rem 1rem;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.tab-button:hover {
  color: var(--text-primary);
}
.tab-button.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
  background-color: var(--bg-primary);
}

.tab-panel {
  display: none;
  padding: 1rem;
}
.tab-panel.active {
  display: block;
}

/* Inline Code */
:not(pre) > code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background-color: var(--bg-code);
  border: 1px solid var(--border-color);
  padding: 0.15em 0.35em;
  border-radius: 4px;
  color: var(--text-primary);
}

/* Mermaid Container */
.mermaid-wrapper {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: center;
  overflow-x: auto;
}

/* Prev / Next Pagination */
.page-nav-footer {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.nav-card {
  display: flex;
  flex-direction: column;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  text-decoration: none;
  transition: all 0.15s ease;
  max-width: 48%;
  flex: 1;
}
.nav-card:hover {
  border-color: var(--accent);
  background-color: var(--bg-secondary);
  text-decoration: none;
}
.nav-card.next {
  text-align: right;
  margin-left: auto;
}
.nav-card-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}
.nav-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: 0.25rem;
}

/* Footer */
.site-footer {
  margin-top: 3rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Sidebar Right (TOC) */
.sidebar-right {
  width: var(--toc-width);
  flex-shrink: 0;
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  overflow-y: auto;
  padding: 2.5rem 1rem 1rem 1rem;
}

.toc-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.toc-list {
  list-style: none;
}

.toc-item {
  margin-bottom: 0.4rem;
}

.toc-link {
  display: block;
  font-size: 0.825rem;
  color: var(--text-muted);
  text-decoration: none;
  line-height: 1.4;
  transition: color 0.15s ease;
}
.toc-link:hover {
  color: var(--accent);
  text-decoration: none;
}
.toc-level-3 {
  padding-left: 0.75rem;
}

/* Search Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 100;
  justify-content: center;
  padding-top: 10vh;
}
.modal-overlay.open {
  display: flex;
}

.search-dialog {
  width: 90%;
  max-width: 600px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 8px 10px -6px rgba(0, 0, 0, 0.2);
  overflow: hidden;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
}

.search-input-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

.search-dialog-input {
  width: 100%;
  border: none;
  background: transparent;
  font-size: 1.1rem;
  color: var(--text-primary);
  outline: none;
}

.search-results-list {
  list-style: none;
  overflow-y: auto;
  padding: 0.75rem;
}

.search-result-item {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color 0.15s ease;
}
.search-result-item:hover, .search-result-item.selected {
  background-color: var(--bg-secondary);
}
.search-result-title {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--accent);
}
.search-result-snippet {
  font-size: 0.825rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* Chroma Code Colors (Clean Fallbacks) */
.chroma .k, .chroma .kd, .chroma .kn, .chroma .kp, .chroma .kr { color: #d73a49; font-weight: 600; }
.chroma .s, .chroma .sa, .chroma .sb, .chroma .sc, .chroma .s1, .chroma .s2 { color: #032f62; }
.chroma .c, .chroma .ch, .chroma .cm, .chroma .c1 { color: #6a737d; font-style: italic; }
.chroma .nf, .chroma .fm { color: #6f42c1; }
.chroma .na, .chroma .nb, .chroma .nc, .chroma .no { color: #005cc5; }

html.dark .chroma .k, html.dark .chroma .kd, html.dark .chroma .kn, html.dark .chroma .kp, html.dark .chroma .kr { color: #ff7b72; }
html.dark .chroma .s, html.dark .chroma .sa, html.dark .chroma .sb, html.dark .chroma .sc, html.dark .chroma .s1, html.dark .chroma .s2 { color: #a5d6ff; }
html.dark .chroma .c, html.dark .chroma .ch, html.dark .chroma .cm, html.dark .chroma .c1 { color: #8b949e; }
html.dark .chroma .nf, html.dark .chroma .fm { color: #d2a8ff; }
html.dark .chroma .na, html.dark .chroma .nb, html.dark .chroma .nc, html.dark .chroma .no { color: #79c0ff; }

/* Responsive */
@media (max-width: 1024px) {
  .sidebar-right {
    display: none;
  }
}

@media (max-width: 768px) {
  .menu-toggle-btn {
    display: flex;
  }
  .sidebar-left {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    width: 80%;
    max-width: 320px;
    z-index: 50;
    background-color: var(--bg-card);
    box-shadow: 10px 0 20px rgba(0, 0, 0, 0.2);
  }
  .sidebar-left.open {
    display: block;
  }
  .content-area {
    padding: 1.5rem 1rem;
  }
}