@font-face {
  font-family: "Thmanyah Sans";
  src: url("/fonts/thmanyahsans-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Thmanyah Sans";
  src: url("/fonts/thmanyahsans-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Thmanyah Sans";
  src: url("/fonts/thmanyahsans-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background-color: var(--canvas);
  color: var(--text-main);
  font-family: var(--font-arabic);
  font-weight: 400;
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
html, body {
  scrollbar-width: thin;
  scrollbar-color: var(--border-dark) var(--canvas);
}
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--canvas); }
::-webkit-scrollbar-thumb { background: var(--border-dark); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }
.en-num, .en-label {
  font-family: var(--font-mono);
  direction: ltr;
  unicode-bidi: isolate;
  display: inline-block;
}
header.top-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.2px;
}
.nav-controls { display: flex; align-items: center; gap: 10px; }
.wrapper { max-width: 960px; margin: 0 auto; padding: 40px 24px 80px; }
.doc-intro { margin-bottom: 40px; border-bottom: 1px solid var(--border); padding-bottom: 32px; }
.doc-title {
  font-family: var(--font-arabic);
  font-size: 34px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: 16px;
}
.doc-summary { font-size: 16.5px; line-height: 1.75; color: var(--text-muted); max-width: 820px; }
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}
.search-input {
  flex: 1;
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 14px;
  font-family: var(--font-arabic);
  font-size: 14px;
  color: var(--text-main);
  outline: none;
  transition: all 120ms var(--spring);
}
.search-input:focus {
  border-color: var(--border-dark);
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.03);
}
.counter-pill {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-soft);
  white-space: nowrap;
  background: var(--surface-subtle);
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  direction: ltr;
}
.curriculum-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
.chapter-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 150ms ease;
}
.chapter-box:hover { border-color: var(--border-dark); }
.chapter-top {
  padding: 16px 20px 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  background: var(--surface-subtle);
}
.chapter-number {
  font-family: var(--font-arabic);
  font-size: 12px;
  font-weight: 700;
  color: var(--text-soft);
  display: block;
  margin-bottom: 2px;
}
.chapter-title {
  font-family: var(--font-arabic);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}
.lesson-count {
  font-family: var(--font-arabic);
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
}
.page-stack { display: flex; flex-direction: column; }
a.page-entry {
  display: block;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  transition: background-color 0.15s ease, color 0.15s ease;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}
a.page-entry:hover { background-color: var(--surface-subtle); }
a.page-entry:hover .page-entry-title { color: var(--pastel-blue-text); }
a.page-entry:last-child { border-bottom: none; }
.page-entry-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.page-entry-title {
  font-family: var(--font-arabic);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.15s ease;
}
footer.doc-footer {
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12.5px;
  color: var(--text-muted);
}
footer.doc-footer a {
  color: var(--text-main);
  text-decoration: none;
  border-bottom: 1px solid var(--border-dark);
}
footer.doc-footer a:hover { border-bottom-color: var(--text-main); }
@media (max-width: 640px) {
  header.top-nav { padding: 0 10px; }
  .nav-controls { gap: 6px; min-width: 0; }
  .wrapper { padding: 28px 14px 56px; }
  .doc-title { font-size: 27px; }
  .doc-summary { font-size: 15px; }
  .filter-bar { align-items: stretch; flex-direction: column; gap: 10px; }
  .counter-pill { align-self: flex-start; }
  .chapter-top { padding: 14px 16px 12px; }
}