/* ==========================================================================
   Flint Documentation - Modern 3-Column Design System
   Inspired by modern documentation standards (React docs, Vite, Next.js)
   Dark theme, clean proportions, offline-capable, responsive
   ========================================================================== */

:root {
  --flint-bg: #161719;
  --flint-canvas: #1c1c1f;
  --flint-surface: #222327;
  --flint-surface-hover: #292a2f;
  --flint-raised: #2d2f34;
  --flint-raised-hover: #35383e;
  --flint-border: #33363b;
  --flint-border-subtle: #27292e;
  --flint-text: #eae8e5;
  --flint-dim: #9ea0a5;
  --flint-dimmer: #707278;
  --flint-accent: #f2a65a;
  --flint-accent-hover: #f5b777;
  --flint-accent-subtle: rgba(242, 166, 90, 0.12);
  --flint-accent-glow: rgba(242, 166, 90, 0.25);
  --flint-code-bg: #1c1d21;
  --flint-success: #49b573;
  --flint-danger: #e06c75;
  
  --top-nav-height: 60px;
  --left-sidebar-width: 250px;
  --right-toc-width: 220px;
  --content-max-width: 1040px;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Source Code Pro", Menlo, Consolas, monospace;
}

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

html {
  color-scheme: dark;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.65;
  background-color: var(--flint-bg);
  color: var(--flint-text);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  background-color: var(--flint-bg);
  color: var(--flint-text);
  overflow-x: hidden;
}

/* ==========================================================================
   Top Navigation Bar (Full Width & Sticky)
   ========================================================================== */

.docs-app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.top-nav {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  height: var(--top-nav-height);
  background-color: rgba(22, 23, 25, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--flint-border);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}

.top-nav-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: var(--left-sidebar-width);
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--flint-text);
}

.brand-logo {
  border-radius: 6px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--flint-text);
}

.version-pill {
  font-size: 0.7rem;
  font-weight: 600;
  background: var(--flint-accent-subtle);
  color: var(--flint-accent);
  border: 1px solid rgba(242, 166, 90, 0.28);
  padding: 1px 7px;
  border-radius: 12px;
  letter-spacing: 0.02em;
}

/* Top Center: Search Trigger (Command Palette style) */
.top-nav-center {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 0 16px;
}

.search-trigger {
  width: 100%;
  max-width: 420px;
  height: 36px;
  background-color: var(--flint-surface);
  border: 1px solid var(--flint-border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  color: var(--flint-dim);
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: inherit;
  font-size: 0.85rem;
}

.search-trigger:hover {
  background-color: var(--flint-surface-hover);
  border-color: var(--flint-dimmer);
  color: var(--flint-text);
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.2);
}

.search-trigger svg {
  margin-right: 10px;
  color: var(--flint-dim);
  flex-shrink: 0;
}

.search-text {
  flex: 1;
  text-align: left;
}

.search-kbd {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background-color: var(--flint-raised);
  border: 1px solid var(--flint-border);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--flint-dim);
}

/* Top Right: Navigation & Actions */
.top-nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.top-nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.top-link {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--flint-dim);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 6px;
  transition: all 0.12s ease;
}

.top-link:hover {
  color: var(--flint-text);
  background-color: rgba(255, 255, 255, 0.04);
}

.top-link.active {
  color: var(--flint-accent);
  background-color: var(--flint-accent-subtle);
}

.top-nav-sep {
  width: 1px;
  height: 20px;
  background-color: var(--flint-border);
}

.top-nav-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.icon-btn {
  background: transparent;
  border: none;
  color: var(--flint-dim);
  width: 34px;
  height: 34px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}

.icon-btn:hover {
  color: var(--flint-text);
  background-color: var(--flint-surface);
}

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

/* ==========================================================================
   3-Column Docs Body Layout
   ========================================================================== */

.docs-body {
  display: flex;
  width: 100%;
  min-height: calc(100vh - var(--top-nav-height));
  position: relative;
}

/* ==========================================================================
   Left Sidebar Navigation
   ========================================================================== */

.left-sidebar {
  width: var(--left-sidebar-width);
  height: calc(100vh - var(--top-nav-height));
  position: sticky;
  top: var(--top-nav-height);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--flint-border-subtle);
  overflow-y: auto;
  overflow-x: hidden;
  padding: 20px 12px 36px;
  scrollbar-width: thin;
  scrollbar-color: var(--flint-border) transparent;
  transition: width 0.22s cubic-bezier(0.16, 1, 0.3, 1), transform 0.22s ease;
}

.left-sidebar::-webkit-scrollbar {
  width: 4px;
}

.left-sidebar::-webkit-scrollbar-thumb {
  background: var(--flint-border);
  border-radius: 4px;
}

.sidebar-nav {
  flex: 1;
}

.sidebar-group {
  margin-bottom: 22px;
}

.sidebar-group:last-child {
  margin-bottom: 0;
}

.sidebar-group-title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--flint-dimmer);
  padding: 4px 10px;
  margin-bottom: 4px;
}

.sidebar-group-items {
  list-style: none;
}

.sidebar-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  border-radius: 6px;
  color: var(--flint-dim);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 450;
  transition: all 0.12s ease;
  margin-bottom: 2px;
}

.sidebar-link:hover {
  background-color: var(--flint-surface);
  color: var(--flint-text);
  transform: translateX(2px);
}

.sidebar-link.active {
  background-color: var(--flint-accent-subtle);
  color: var(--flint-accent);
  font-weight: 600;
  border-left: 2px solid var(--flint-accent);
  border-top-left-radius: 2px;
  border-bottom-left-radius: 2px;
}

.external-icon {
  font-size: 0.75rem;
  opacity: 0.6;
}

.sidebar-footer {
  padding-top: 16px;
  border-top: 1px solid var(--flint-border-subtle);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-meta {
  font-size: 0.75rem;
  color: var(--flint-dim);
  font-weight: 500;
}

.sidebar-meta-sub {
  font-size: 0.7rem;
  color: var(--flint-dimmer);
}

.sidebar-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 85;
}

/* ==========================================================================
   Center Main Reading Content
   ========================================================================== */

.center-content {
  flex: 1;
  min-width: 0;
  display: flex;
  justify-content: center;
  padding: 0 32px 56px;
}

.content-container {
  width: 100%;
  max-width: var(--content-max-width);
  padding-top: 24px;
}

.content-top-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--flint-border-subtle);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.breadcrumb-group {
  color: var(--flint-dimmer);
}

.breadcrumb-sep {
  color: var(--flint-border);
}

.breadcrumb-current {
  color: var(--flint-accent);
}

.copy-page-btn {
  background: transparent;
  border: 1px solid var(--flint-border);
  color: var(--flint-dim);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.copy-page-btn:hover {
  background-color: var(--flint-surface);
  border-color: var(--flint-accent);
  color: var(--flint-accent);
}

.copy-page-btn.copied {
  background-color: rgba(73, 181, 115, 0.12);
  border-color: var(--flint-success);
  color: var(--flint-success);
}

/* Article Typography */
.doc-article h1,
.doc-article h2,
.doc-article h3,
.doc-article h4 {
  color: var(--flint-text);
  font-weight: 650;
  line-height: 1.3;
  margin-top: 2rem;
  margin-bottom: 0.8rem;
  letter-spacing: -0.02em;
  scroll-margin-top: calc(var(--top-nav-height) + 16px);
}

.doc-article h1:first-child {
  margin-top: 0;
}

.doc-article h1 {
  font-size: 2.2rem;
  letter-spacing: -0.03em;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--flint-border-subtle);
  margin-bottom: 1.4rem;
}

.doc-article h2 {
  font-size: 1.5rem;
  margin-top: 2.6rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--flint-border-subtle);
}

.doc-article h3 {
  font-size: 1.2rem;
  margin-top: 1.8rem;
}

.doc-article p {
  margin-bottom: 1.2rem;
  color: var(--flint-text);
}

.header-anchor {
  opacity: 0;
  color: var(--flint-dimmer);
  text-decoration: none;
  margin-left: 0.4em;
  font-size: 0.85em;
  font-weight: normal;
  transition: all 0.15s ease;
}

.doc-article h2:hover .header-anchor,
.doc-article h3:hover .header-anchor {
  opacity: 1;
  color: var(--flint-accent);
}

.header-anchor:hover {
  color: var(--flint-accent-hover);
}

.doc-article a {
  color: var(--flint-accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

/* Inline Code */
code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background-color: var(--flint-surface);
  border: 1px solid var(--flint-border);
  border-radius: 4px;
  padding: 0.15em 0.4em;
  color: #f7ba7e;
  word-break: break-word;
}

/* Code Blocks */
.code-block {
  position: relative;
  margin: 1.4rem 0;
  border-radius: 8px;
  border: 1px solid var(--flint-border);
  background-color: var(--flint-code-bg);
  overflow: hidden;
  max-width: 100%;
}

.code-block pre {
  margin: 0;
  padding: 16px 20px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.55;
  scrollbar-width: thin;
  scrollbar-color: var(--flint-border) transparent;
  -webkit-overflow-scrolling: touch;
}

.code-block pre::-webkit-scrollbar {
  height: 6px;
}

.code-block pre::-webkit-scrollbar-thumb {
  background: var(--flint-border);
  border-radius: 4px;
}

.code-block pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--flint-text);
  font-size: inherit;
  border-radius: 0;
}

.copy-code-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--flint-surface);
  border: 1px solid var(--flint-border);
  color: var(--flint-dim);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
  opacity: 0;
  transition: all 0.15s ease;
  z-index: 2;
}

.code-block:hover .copy-code-btn {
  opacity: 1;
}

.copy-code-btn:hover {
  background: var(--flint-raised);
  border-color: var(--flint-accent);
  color: var(--flint-accent);
}

.copy-code-btn.copied {
  opacity: 1;
  background: rgba(73, 181, 115, 0.15);
  border-color: var(--flint-success);
  color: var(--flint-success);
}

/* Syntax Highlighting */
.highlight .k, .highlight .kd, .highlight .kn, .highlight .kr { color: #f2a65a; font-weight: 600; }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sb, .highlight .sc { color: #98c379; }
.highlight .c, .highlight .c1, .highlight .cm, .highlight .cs { color: #7f848e; font-style: italic; }
.highlight .m, .highlight .mi, .highlight .mf, .highlight .mh { color: #d19a66; }
.highlight .nb, .highlight .nt, .highlight .nv, .highlight .na { color: #e5c07b; }
.highlight .nf, .highlight .nn { color: #61afef; }
.highlight .o, .highlight .p { color: var(--flint-dim); }

/* Tables */
.table-wrapper {
  margin: 1.5rem 0;
  overflow-x: auto;
  border: 1px solid var(--flint-border);
  border-radius: 8px;
  background-color: var(--flint-surface);
  scrollbar-width: thin;
  scrollbar-color: var(--flint-border) transparent;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  text-align: left;
}

th, td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--flint-border);
}

th {
  background-color: var(--flint-raised);
  color: var(--flint-text);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}

tr:last-child td {
  border-bottom: none;
}

tr:nth-child(even) td {
  background-color: rgba(255, 255, 255, 0.015);
}

tr:hover td {
  background-color: rgba(255, 255, 255, 0.03);
}

/* Lists */
.doc-article ul,
.doc-article ol {
  margin: 0 0 1.3rem 1.6rem;
  color: var(--flint-text);
}

.doc-article li {
  margin-bottom: 0.4rem;
}

.doc-article li > ul,
.doc-article li > ol {
  margin-top: 0.4rem;
  margin-bottom: 0.4rem;
}

/* Blockquotes */
blockquote {
  margin: 1.4rem 0;
  padding: 12px 20px;
  border-left: 3px solid var(--flint-accent);
  background-color: rgba(242, 166, 90, 0.05);
  border-radius: 0 6px 6px 0;
  color: var(--flint-text);
}

blockquote p:last-child {
  margin-bottom: 0;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

.doc-article img {
  border: 1px solid var(--flint-border);
  border-radius: 8px;
  margin: 1.8rem auto;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  max-width: 100%;
  height: auto;
}

/* Page Navigation (Prev / Next) */
.page-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--flint-border-subtle);
}

.page-nav-placeholder {
  visibility: hidden;
}

.page-nav-link {
  display: flex;
  flex-direction: column;
  padding: 14px 18px;
  background: var(--flint-surface);
  border: 1px solid var(--flint-border);
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.15s ease;
}

.page-nav-link.next {
  text-align: right;
  align-items: flex-end;
}

.page-nav-link:hover {
  background: var(--flint-raised);
  border-color: var(--flint-accent);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.page-nav-sub {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--flint-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.page-nav-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--flint-text);
}

.page-nav-link:hover .page-nav-title {
  color: var(--flint-accent);
}

/* Content Footer */
.content-footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--flint-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--flint-dimmer);
}

.footer-meta a {
  color: var(--flint-dim);
}

.footer-meta a:hover {
  color: var(--flint-accent);
}

.back-to-top {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--flint-dimmer);
  text-decoration: none;
  font-size: 0.8rem;
  transition: color 0.15s ease;
}

.back-to-top:hover {
  color: var(--flint-accent);
  text-decoration: none;
}

/* ==========================================================================
   Right "On This Page" Table of Contents Sidebar
   ========================================================================== */

.right-toc {
  width: var(--right-toc-width);
  height: calc(100vh - var(--top-nav-height));
  position: sticky;
  top: var(--top-nav-height);
  flex-shrink: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 24px 14px 36px;
  border-left: 1px solid var(--flint-border-subtle);
  scrollbar-width: thin;
  scrollbar-color: var(--flint-border) transparent;
}

.right-toc::-webkit-scrollbar {
  width: 4px;
}

.right-toc::-webkit-scrollbar-thumb {
  background: var(--flint-border);
  border-radius: 4px;
}

.toc-container {
  display: flex;
  flex-direction: column;
}

.toc-title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--flint-dimmer);
  margin-bottom: 12px;
  padding-left: 8px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.toc-item {
  display: block;
}

.toc-link {
  font-size: 0.82rem;
  color: var(--flint-dim);
  text-decoration: none;
  padding: 5px 8px;
  border-radius: 5px;
  display: block;
  line-height: 1.4;
  transition: all 0.12s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.toc-level-3 .toc-link {
  padding-left: 18px;
  font-size: 0.78rem;
}

.toc-link:hover {
  color: var(--flint-text);
  background-color: var(--flint-surface);
}

.toc-link.active {
  color: var(--flint-accent);
  background-color: var(--flint-accent-subtle);
  font-weight: 600;
  border-left: 2px solid var(--flint-accent);
  border-top-left-radius: 2px;
  border-bottom-left-radius: 2px;
}

/* ==========================================================================
   Search Modal (Ctrl+K)
   ========================================================================== */

.search-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 200;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 12vh 16px 20px;
}

.search-modal {
  width: 100%;
  max-width: 580px;
  background-color: var(--flint-surface);
  border: 1px solid var(--flint-border);
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.65);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalSlideDown 0.15s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalSlideDown {
  from { opacity: 0; transform: translateY(-16px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.search-modal-header {
  display: flex;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--flint-border);
  gap: 12px;
}

.search-modal-icon {
  color: var(--flint-accent);
  flex-shrink: 0;
}

.search-modal-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--flint-text);
  font-size: 1rem;
  font-family: inherit;
  outline: none;
}

.search-modal-input::placeholder {
  color: var(--flint-dimmer);
}

.search-modal-close {
  background: var(--flint-raised);
  border: 1px solid var(--flint-border);
  color: var(--flint-dim);
  font-size: 0.72rem;
  padding: 2px 6px;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-mono);
}

.search-modal-body {
  max-height: 380px;
  overflow-y: auto;
  padding: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--flint-border) transparent;
}

.search-results {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.search-item {
  display: flex;
  flex-direction: column;
  padding: 10px 12px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--flint-text);
  transition: all 0.1s ease;
}

.search-item:hover,
.search-item.selected {
  background-color: var(--flint-surface-hover);
}

.search-item.selected {
  border-left: 3px solid var(--flint-accent);
  background-color: var(--flint-accent-subtle);
}

.search-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 2px;
}

.search-item-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--flint-text);
}

.search-item.selected .search-item-title {
  color: var(--flint-accent);
}

.search-item-group {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--flint-dimmer);
  font-weight: 600;
  background: var(--flint-raised);
  padding: 1px 6px;
  border-radius: 4px;
}

.search-item-snippet {
  font-size: 0.78rem;
  color: var(--flint-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-empty {
  padding: 32px 16px;
  text-align: center;
  font-size: 0.88rem;
  color: var(--flint-dimmer);
}

.search-modal-footer {
  padding: 10px 18px;
  border-top: 1px solid var(--flint-border);
  background-color: var(--flint-surface);
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.75rem;
  color: var(--flint-dimmer);
}

.search-hint kbd {
  font-family: var(--font-mono);
  background: var(--flint-raised);
  border: 1px solid var(--flint-border);
  border-radius: 3px;
  padding: 1px 4px;
  font-size: 0.7rem;
  color: var(--flint-dim);
}

/* ==========================================================================
   Responsive Adaptations (Tablet & Mobile)
   ========================================================================== */

/* Intermediate desktop/laptop range (961px to 1140px): keep all 3 columns visible with snug widths */
@media (min-width: 961px) and (max-width: 1140px) {
  :root {
    --left-sidebar-width: 230px;
    --right-toc-width: 200px;
  }

  .top-nav {
    padding: 0 16px;
  }

  .center-content {
    padding: 0 20px 48px;
  }
}

/* Tablet & Mobile: Drawer Mode */
@media (max-width: 960px) {
  .right-toc {
    display: none;
  }
  .top-nav-left {
    min-width: auto;
  }

  .sidebar-toggle-btn {
    display: flex;
  }

  .top-nav-links,
  .top-nav-sep {
    display: none;
  }

  .search-trigger {
    max-width: 280px;
  }

  .search-kbd {
    display: none;
  }

  .left-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    height: 100vh;
    width: min(300px, 85vw);
    background-color: var(--flint-surface);
    box-shadow: 4px 0 30px rgba(0, 0, 0, 0.6);
    transform: translateX(-100%);
    z-index: 150;
    padding-top: 20px;
  }

  .left-sidebar.open {
    transform: translateX(0);
  }

  .sidebar-backdrop.active {
    display: block;
  }

  .center-content {
    padding: 0 20px 48px;
  }

  .copy-code-btn {
    opacity: 1;
  }
}

@media (max-width: 640px) {
  .top-nav {
    padding: 0 14px;
  }

  .search-trigger {
    max-width: 180px;
    padding: 0 8px;
  }

  .search-text {
    font-size: 0.8rem;
  }

  .page-nav {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .page-nav-link.next {
    text-align: left;
    align-items: flex-start;
  }

  .doc-article h1 {
    font-size: 1.8rem;
    margin-bottom: 1.1rem;
  }

  .doc-article h2 {
    font-size: 1.35rem;
    margin-top: 2rem;
  }

  .center-content {
    padding: 0 14px 40px;
  }

  .content-footer {
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
  }

  .code-block pre {
    padding: 14px 14px;
    font-size: 0.84rem;
  }

  th, td {
    padding: 8px 12px;
    font-size: 0.85rem;
  }
}