:root {
  color-scheme: light;
  --bg: #ffffff;
  --panel: #f7f9fb;
  --text: #17202a;
  --muted: #64748b;
  --line: #d9e1ea;
  --brand: #0f766e;
  --brand-dark: #115e59;
  --code: #0f172a;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
a { color: var(--brand-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 12px;
  height: 56px;
  padding: 0 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.96);
}
.brand {
  color: var(--brand-dark);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0;
}
.subtitle { color: var(--muted); font-size: 14px; }
.language-switch {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 7px 10px;
  color: #0f766e;
  background: #ffffff;
  font-size: 14px;
  font-weight: 700;
}
.language-switch:hover {
  background: #ecfdf5;
  text-decoration: none;
}
.search-trigger {
  flex: 1;
  max-width: 560px;
  min-width: 220px;
  height: 38px;
  margin-left: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 10px 0 12px;
  background: #f8fafc;
  color: #64748b;
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.search-trigger:hover {
  border-color: #b7c3d2;
  background: #ffffff;
}
.search-trigger-icon {
  display: inline-flex;
  color: #94a3b8;
}
.search-trigger-label {
  flex: 1;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-size: 14px;
}
kbd {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 2px 7px;
  border: 1px solid #dbe3ed;
  border-radius: 6px;
  background: #f1f5f9;
  color: #64748b;
  font: 12px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  padding: 20px;
  background: rgba(15, 23, 42, .42);
  backdrop-filter: blur(2px);
}
.search-overlay[hidden] {
  display: none;
}
.search-modal {
  width: min(672px, calc(100vw - 40px));
  max-height: min(848px, calc(100vh - 40px));
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, .45);
  border-radius: 14px;
  background: #ffffff;
  box-shadow: 0 26px 80px rgba(15, 23, 42, .32);
}
.search-input-row {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  padding: 0 14px 0 16px;
  border-bottom: 1px solid var(--line);
}
.search-input-icon {
  flex: 0 0 auto;
  color: #94a3b8;
}
.search-input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: #111827;
  font: 16px/1.4 inherit;
}
.search-input::-webkit-search-cancel-button {
  display: none;
}
.search-close {
  border: 0;
  border-radius: 8px;
  padding: 6px 9px;
  background: #f1f5f9;
  color: #64748b;
  font-size: 12px;
  cursor: pointer;
}
.search-results {
  min-height: 190px;
  max-height: calc(100vh - 154px);
  overflow: auto;
  padding: 16px 16px 10px;
}
.search-result {
  display: block;
  border-radius: 4px;
  padding: 11px 14px 12px;
  color: #17202a;
}
.search-result:hover,
.search-result[aria-selected="true"] {
  background: #f1f5f9;
  text-decoration: none;
}
.search-result-title {
  margin-bottom: 5px;
  color: #111827;
  font-size: 14px;
  font-weight: 650;
  line-height: 1.25;
}
.search-result-excerpt {
  color: #6b7280;
  font-size: 13px;
  line-height: 1.25;
}
.search-result mark {
  padding: 0 1px;
  background: #fff200;
  color: inherit;
}
.search-empty,
.search-loading {
  padding: 42px 20px;
  text-align: center;
  color: #64748b;
  font-size: 14px;
}
.search-footer {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 42px;
  padding: 0 16px;
  border-top: 1px solid var(--line);
  color: #64748b;
  font-size: 12px;
}
.search-footer .search-count {
  margin-left: auto;
}
.layout {
  display: grid;
  grid-template-columns: minmax(220px, 292px) minmax(0, 860px) minmax(180px, 248px);
  gap: 32px;
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px;
}
.sidebar,
.rightbar {
  position: sticky;
  top: 80px;
  align-self: start;
  max-height: calc(100vh - 96px);
  overflow: auto;
}
.sidebar-title {
  font-weight: 700;
  margin-bottom: 12px;
}
.sidebar ul {
  list-style: none;
  margin: 0;
  padding: 0 0 0 12px;
}
.sidebar > ul { padding-left: 0; }
.nav-group {
  display: block;
  margin: 18px 0 6px;
  color: #334155;
  font-weight: 700;
  font-size: 13px;
}
.nav-link {
  display: block;
  padding: 5px 8px;
  border-radius: 6px;
  color: #475569;
  font-size: 14px;
}
.nav-link.active {
  color: #064e3b;
  background: #dff5ef;
  font-weight: 700;
}
.doc {
  min-width: 0;
  padding-bottom: 48px;
}
.doc h1 {
  margin: 0 0 24px;
  font-size: 36px;
  line-height: 1.18;
}
.doc h2 {
  margin: 36px 0 14px;
  font-size: 25px;
  line-height: 1.3;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.doc h3 { margin: 28px 0 10px; font-size: 20px; }
.doc h4 { margin: 22px 0 8px; font-size: 16px; }
.doc p, .doc li { font-size: 16px; }
.doc img { max-width: 100%; }
.doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  display: block;
  overflow-x: auto;
}
.doc th, .doc td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
}
.doc code {
  padding: 2px 5px;
  border-radius: 4px;
  background: #eef2f7;
  color: var(--code);
}
.doc pre {
  overflow-x: auto;
  padding: 16px;
  border-radius: 8px;
  background: #0f172a;
  color: #e2e8f0;
}
.doc pre code { background: transparent; color: inherit; padding: 0; }
.screenshot-slot {
  min-height: 240px;
  margin: 24px 0;
  border: 2px dashed #a8b6c7;
  border-radius: 8px;
  background: repeating-linear-gradient(135deg, #f8fafc, #f8fafc 12px, #eef2f7 12px, #eef2f7 24px);
}
.screenshot-slot::before {
  content: "Screenshot placeholder";
  display: block;
  padding: 16px;
  color: #64748b;
  font-size: 14px;
}
.toc {
  border-left: 1px solid var(--line);
  padding-left: 16px;
}
.toc-title {
  margin-bottom: 10px;
  font-weight: 700;
  font-size: 13px;
  color: #334155;
}
.toc a {
  display: block;
  padding: 4px 0;
  color: #64748b;
  font-size: 13px;
}
.toc .toc-l3 { padding-left: 12px; }
.prev-next {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.pager {
  display: block;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
  color: #17202a;
}
.pager span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}
.pager.next { text-align: right; }
html[dir="rtl"] body {
  text-align: right;
}
html[dir="rtl"] .search-trigger {
  margin-left: 0;
  margin-right: 12px;
  text-align: right;
}
html[dir="rtl"] .screenshot-slot::before {
  content: "موضع لقطة الشاشة";
}
html[dir="rtl"] .toc {
  border-left: 0;
  border-right: 1px solid var(--line);
  padding-left: 0;
  padding-right: 16px;
}
html[dir="rtl"] .toc .toc-l3 {
  padding-left: 0;
  padding-right: 12px;
}
html[dir="rtl"] .pager.next {
  text-align: left;
}
html[dir="rtl"] .search-footer .search-count {
  margin-left: 0;
  margin-right: auto;
}
@media (max-width: 1040px) {
  .layout { grid-template-columns: 240px minmax(0, 1fr); }
  .rightbar { display: none; }
}
@media (max-width: 760px) {
  .topbar { padding: 0 14px; gap: 8px; }
  .subtitle { display: none; }
  .search-trigger {
    min-width: 0;
    height: 36px;
    margin-left: 4px;
  }
  html[dir="rtl"] .search-trigger {
    margin-left: 0;
    margin-right: 4px;
  }
  .search-trigger-label { font-size: 13px; }
  .search-trigger kbd { display: none; }
  .search-overlay { padding: 10px; }
  .search-modal {
    width: calc(100vw - 20px);
    max-height: calc(100vh - 20px);
    border-radius: 12px;
  }
  .search-results { max-height: calc(100vh - 124px); padding: 10px; }
  .search-result { padding: 10px 11px; }
  .search-footer { gap: 10px; padding: 0 12px; }
  .layout { display: block; padding: 16px; }
  .sidebar { position: static; max-height: 320px; margin-bottom: 24px; border-bottom: 1px solid var(--line); padding-bottom: 16px; }
  .doc h1 { font-size: 30px; }
  .prev-next { grid-template-columns: 1fr; }
}