/* ==========================================================================
   QuantDinger Docs — Yuque-inspired documentation theme
   ========================================================================== */

/* ---------- Tokens (reuse vars from styles.css; redeclare fallbacks) ---------- */
:root {
  --doc-bg:        #0a0b14;
  --doc-bg-soft:   #0d1020;
  --doc-panel:     #0e1124;
  --doc-panel-2:   #11152b;
  --doc-border:    rgba(255, 255, 255, 0.08);
  --doc-border-2:  rgba(255, 255, 255, 0.14);
  --doc-text:      #e6e8f2;
  --doc-text-dim:  #aab0c6;
  --doc-muted:     #7e85a0;
  --doc-accent:    #7c5cff;
  --doc-cyan:      #22d3ee;
  --doc-green:     #22c55e;
  --doc-amber:     #f59e0b;
  --doc-red:       #ef4444;
  --doc-code-bg:   #0b0e1e;
  --doc-code-ln:   #1a2040;
  --doc-radius:    10px;
  --doc-sidebar-w: 280px;
  --doc-toc-w:     220px;
  --doc-header-h:  58px;

  --doc-brand-grad: linear-gradient(135deg, #7c5cff 0%, #22d3ee 100%);
}

html, body { background: var(--doc-bg); }

body.docs {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: var(--doc-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.docs a { color: var(--doc-cyan); text-decoration: none; }
body.docs a:hover { color: #a2edff; text-decoration: underline; }

/* ---------- Header ---------- */
.docs-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--doc-header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px;
  background: rgba(10, 11, 20, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--doc-border);
}
.docs-header__left {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}
.docs-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--doc-text);
  text-decoration: none !important;
}
.docs-header__brand:hover { color: var(--doc-text); }
.docs-header__brand img {
  width: 28px; height: 28px;
  border-radius: 8px;
  border: 1px solid var(--doc-border-2);
}
.docs-header__brand b {
  font-weight: 700;
  letter-spacing: -0.01em;
}
.docs-header__divider {
  width: 1px;
  height: 22px;
  background: var(--doc-border);
}
.docs-header__title {
  color: var(--doc-text-dim);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.docs-header__search {
  flex: 0 1 340px;
  position: relative;
  max-width: 340px;
}
.docs-header__search input {
  width: 100%;
  height: 36px;
  padding: 0 14px 0 36px;
  border-radius: 10px;
  border: 1px solid var(--doc-border-2);
  background: rgba(255, 255, 255, 0.04);
  color: var(--doc-text);
  font-size: 13.5px;
  outline: none;
  transition: border-color .15s ease, background .15s ease;
}
.docs-header__search input::placeholder { color: var(--doc-muted); }
.docs-header__search input:focus {
  border-color: rgba(124, 92, 255, 0.6);
  background: rgba(124, 92, 255, 0.06);
}
.docs-header__search svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--doc-muted);
  pointer-events: none;
}
.docs-header__search kbd {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 11px;
  font-family: inherit;
  color: var(--doc-muted);
  padding: 2px 6px;
  border-radius: 5px;
  border: 1px solid var(--doc-border-2);
  background: rgba(255, 255, 255, 0.04);
  line-height: 1;
}

.docs-header__right {
  display: flex;
  align-items: center;
  gap: 10px;
}
.docs-header__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--doc-text-dim);
  background: transparent;
  border: 1px solid var(--doc-border-2);
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.docs-header__btn:hover {
  color: var(--doc-text);
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--doc-border-2);
  text-decoration: none !important;
}
.docs-header__btn.primary {
  color: #0a0b14;
  background: var(--doc-brand-grad);
  border-color: transparent;
}
.docs-header__btn.primary:hover { color: #0a0b14; }

.docs-header__menu {
  display: none;
  width: 36px; height: 36px;
  border-radius: 8px;
  border: 1px solid var(--doc-border-2);
  background: transparent;
  color: var(--doc-text-dim);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* ---------- Layout ---------- */
.docs-layout {
  display: grid;
  grid-template-columns: var(--doc-sidebar-w) 1fr var(--doc-toc-w);
  max-width: 1480px;
  margin: 0 auto;
  gap: 32px;
  padding: 0 24px;
}

/* ---------- Sidebar ---------- */
.docs-sidebar {
  position: sticky;
  top: var(--doc-header-h);
  align-self: start;
  max-height: calc(100vh - var(--doc-header-h));
  overflow-y: auto;
  padding: 22px 8px 40px 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.12) transparent;
}
.docs-sidebar::-webkit-scrollbar { width: 6px; }
.docs-sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
.docs-sidebar::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

.docs-nav__group {
  margin-bottom: 8px;
}
.docs-nav__title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 8px 12px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--doc-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  border-radius: 8px;
  transition: color .15s ease, background .15s ease;
}
.docs-nav__title:hover { color: var(--doc-text-dim); background: rgba(255,255,255,0.025); }
.docs-nav__title svg {
  transition: transform .18s ease;
  opacity: 0.6;
}
.docs-nav__group.collapsed .docs-nav__title svg { transform: rotate(-90deg); }
.docs-nav__group.collapsed .docs-nav__list { display: none; }

.docs-nav__list { list-style: none; margin: 2px 0 6px; padding: 0; }
.docs-nav__list a {
  display: block;
  padding: 7px 12px 7px 20px;
  font-size: 13.5px;
  color: var(--doc-text-dim);
  border-radius: 8px;
  border-left: 2px solid transparent;
  text-decoration: none !important;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
  line-height: 1.35;
}
.docs-nav__list a:hover {
  background: rgba(255,255,255,0.04);
  color: var(--doc-text);
}
.docs-nav__list a.active {
  color: var(--doc-text);
  background: linear-gradient(90deg, rgba(124,92,255,0.16), rgba(34,211,238,0.06));
  border-left-color: var(--doc-cyan);
  font-weight: 600;
}

/* ---------- Main content ---------- */
.docs-main {
  padding: 40px 8px 120px;
  min-width: 0;
}
.docs-main article {
  max-width: 820px;
}

.doc-eyebrow {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--doc-cyan);
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.3);
  margin-bottom: 14px;
}
.doc-intro-title {
  font-size: clamp(32px, 4vw, 44px);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 16px;
  background: var(--doc-brand-grad);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.doc-intro-sub {
  font-size: 17px;
  color: var(--doc-text-dim);
  line-height: 1.65;
  margin: 0 0 36px;
  max-width: 720px;
}

.docs-main section { scroll-margin-top: calc(var(--doc-header-h) + 20px); }

.docs-main h2 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 56px 0 18px;
  padding-top: 8px;
  color: var(--doc-text);
  position: relative;
}
.docs-main h2::before {
  content: "";
  position: absolute;
  left: -18px;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 22px;
  background: var(--doc-brand-grad);
  border-radius: 2px;
}
.docs-main h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 36px 0 12px;
  color: var(--doc-text);
  letter-spacing: -0.01em;
}
.docs-main h4 {
  font-size: 16px;
  font-weight: 700;
  margin: 22px 0 10px;
  color: var(--doc-text);
}
.docs-main p, .docs-main ul, .docs-main ol {
  color: var(--doc-text-dim);
  margin: 0 0 14px;
}
.docs-main ul, .docs-main ol { padding-left: 22px; }
.docs-main li { margin-bottom: 6px; }
.docs-main strong { color: var(--doc-text); font-weight: 600; }

.docs-main h2 .anchor,
.docs-main h3 .anchor {
  display: inline-block;
  opacity: 0;
  margin-left: 8px;
  color: var(--doc-muted);
  font-weight: 400;
  transition: opacity .15s ease;
}
.docs-main h2:hover .anchor,
.docs-main h3:hover .anchor { opacity: 1; }

/* ---------- Inline code & code blocks ---------- */
.docs-main :not(pre) > code {
  font-family: 'JetBrains Mono', 'SFMono-Regular', Menlo, Consolas, monospace;
  font-size: 0.88em;
  padding: 2px 6px;
  border-radius: 5px;
  background: rgba(124, 92, 255, 0.14);
  color: #d8c8ff;
  border: 1px solid rgba(124, 92, 255, 0.24);
}

.doc-code {
  position: relative;
  margin: 16px 0 20px;
  border-radius: var(--doc-radius);
  border: 1px solid var(--doc-border);
  background: var(--doc-code-bg);
  overflow: hidden;
}
.doc-code__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  border-bottom: 1px solid var(--doc-border);
  background: rgba(255,255,255,0.025);
}
.doc-code__lang {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  color: var(--doc-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.doc-code__copy {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  color: var(--doc-text-dim);
  background: transparent;
  border: 1px solid var(--doc-border-2);
  padding: 4px 9px;
  border-radius: 6px;
  cursor: pointer;
  transition: color .15s, background .15s, border-color .15s;
}
.doc-code__copy:hover {
  color: var(--doc-text);
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.25);
}
.doc-code__copy.copied {
  color: var(--doc-green);
  border-color: rgba(34, 197, 94, 0.45);
  background: rgba(34, 197, 94, 0.09);
}
.doc-code pre {
  margin: 0;
  padding: 16px 18px;
  overflow-x: auto;
  font-family: 'JetBrains Mono', 'SFMono-Regular', Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.62;
  color: #d8e0f0;
}
.doc-code pre code {
  background: transparent;
  border: none;
  padding: 0;
  font-size: inherit;
  color: inherit;
}

/* tiny token hints for readability (no parser, just a vibe) */
.doc-code .tk-cmt { color: #6a7290; font-style: italic; }
.doc-code .tk-str { color: #7ee2b8; }
.doc-code .tk-kw  { color: #c38bff; font-weight: 600; }
.doc-code .tk-fn  { color: #6ad0ff; }
.doc-code .tk-num { color: #ffb86b; }
.doc-code .tk-op  { color: #ff7ea8; }

/* ---------- Callouts ---------- */
.doc-callout {
  display: flex;
  gap: 12px;
  margin: 18px 0;
  padding: 14px 16px;
  border-radius: var(--doc-radius);
  border-left: 3px solid;
  background: rgba(255,255,255,0.02);
  border-color-opacity: 0.5;
}
.doc-callout__icon {
  flex-shrink: 0;
  width: 22px; height: 22px;
  display: inline-flex; align-items: center; justify-content: center;
  margin-top: 2px;
}
.doc-callout__body { flex: 1; min-width: 0; }
.doc-callout__body :first-child { margin-top: 0; }
.doc-callout__body :last-child  { margin-bottom: 0; }
.doc-callout__title {
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.doc-callout--info    { border-color: var(--doc-cyan);  background: rgba(34, 211, 238, 0.06); }
.doc-callout--info    .doc-callout__icon,
.doc-callout--info    .doc-callout__title { color: var(--doc-cyan); }

.doc-callout--tip     { border-color: var(--doc-green); background: rgba(34, 197, 94, 0.07); }
.doc-callout--tip     .doc-callout__icon,
.doc-callout--tip     .doc-callout__title { color: var(--doc-green); }

.doc-callout--warn    { border-color: var(--doc-amber); background: rgba(245, 158, 11, 0.07); }
.doc-callout--warn    .doc-callout__icon,
.doc-callout--warn    .doc-callout__title { color: var(--doc-amber); }

.doc-callout--danger  { border-color: var(--doc-red);   background: rgba(239, 68, 68, 0.07); }
.doc-callout--danger  .doc-callout__icon,
.doc-callout--danger  .doc-callout__title { color: var(--doc-red); }

/* ---------- Tables ---------- */
.docs-main table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
  border: 1px solid var(--doc-border);
  border-radius: var(--doc-radius);
  overflow: hidden;
}
.docs-main thead { background: rgba(124, 92, 255, 0.07); }
.docs-main th {
  text-align: left;
  padding: 10px 14px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--doc-text);
  border-bottom: 1px solid var(--doc-border);
  text-transform: uppercase;
}
.docs-main td {
  padding: 10px 14px;
  color: var(--doc-text-dim);
  border-top: 1px solid var(--doc-border);
  vertical-align: top;
}
.docs-main tr:hover td { background: rgba(255, 255, 255, 0.025); }

/* ---------- Tabs (for Linux/Mac/Windows switchers) ---------- */
.doc-tabs { margin: 16px 0 20px; }
.doc-tabs__nav {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--doc-border);
  margin-bottom: 0;
  padding-bottom: 0;
}
.doc-tabs__btn {
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--doc-text-dim);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease;
}
.doc-tabs__btn:hover { color: var(--doc-text); }
.doc-tabs__btn.active {
  color: var(--doc-cyan);
  border-bottom-color: var(--doc-cyan);
}
.doc-tabs__pane { display: none; padding-top: 8px; }
.doc-tabs__pane.active { display: block; }

/* ---------- Feature grid ---------- */
.doc-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 16px 0 24px;
}
.doc-feat {
  padding: 16px;
  border-radius: var(--doc-radius);
  border: 1px solid var(--doc-border);
  background: rgba(255,255,255,0.02);
  transition: border-color .15s ease, background .15s ease;
}
.doc-feat:hover { border-color: var(--doc-border-2); background: rgba(255,255,255,0.04); }
.doc-feat h4 {
  margin: 0 0 6px;
  font-size: 14.5px;
  color: var(--doc-text);
}
.doc-feat p { margin: 0; font-size: 13px; color: var(--doc-text-dim); line-height: 1.55; }

/* ---------- Prev/Next nav ---------- */
.doc-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--doc-border);
}
.doc-pager a {
  display: block;
  padding: 14px 18px;
  border-radius: var(--doc-radius);
  border: 1px solid var(--doc-border);
  background: rgba(255,255,255,0.02);
  text-decoration: none !important;
  transition: border-color .15s ease, background .15s ease, transform .15s ease;
}
.doc-pager a:hover {
  border-color: rgba(124, 92, 255, 0.5);
  background: rgba(124, 92, 255, 0.07);
  transform: translateY(-1px);
}
.doc-pager__label {
  font-size: 12px;
  color: var(--doc-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.doc-pager__title {
  display: block;
  font-size: 15px;
  color: var(--doc-text);
  font-weight: 600;
  margin-top: 4px;
}
.doc-pager a.next { text-align: right; }

/* ---------- Right-side TOC ---------- */
.docs-toc {
  position: sticky;
  top: calc(var(--doc-header-h) + 8px);
  align-self: start;
  max-height: calc(100vh - var(--doc-header-h) - 16px);
  overflow-y: auto;
  padding: 28px 0 40px;
  font-size: 13px;
}
.docs-toc__title {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--doc-muted);
  padding: 0 10px 10px;
  margin: 0;
  border-bottom: 1px solid var(--doc-border);
}
.docs-toc ul { list-style: none; padding: 0; margin: 10px 0; }
.docs-toc li { margin: 0; }
.docs-toc a {
  display: block;
  padding: 5px 10px;
  color: var(--doc-muted);
  border-left: 2px solid transparent;
  text-decoration: none !important;
  transition: color .15s ease, border-color .15s ease;
  line-height: 1.4;
}
.docs-toc a:hover { color: var(--doc-text-dim); }
.docs-toc a.active {
  color: var(--doc-cyan);
  border-left-color: var(--doc-cyan);
}
.docs-toc a.depth-3 { padding-left: 22px; font-size: 12.5px; }

/* ---------- Backdrop for mobile sidebar ---------- */
.docs-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 40;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.docs-backdrop.open { display: block; }

/* ---------- Responsive ---------- */
@media (max-width: 1180px) {
  .docs-layout { grid-template-columns: var(--doc-sidebar-w) 1fr; }
  .docs-toc { display: none; }
}

@media (max-width: 820px) {
  .docs-header { padding: 0 14px; }
  .docs-header__title,
  .docs-header__divider,
  .docs-header__search { display: none; }
  .docs-header__menu { display: inline-flex; }

  .docs-layout {
    grid-template-columns: 1fr;
    padding: 0 18px;
    gap: 0;
  }
  .docs-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 45;
    width: 300px;
    max-width: 90vw;
    height: 100vh;
    max-height: 100vh;
    background: var(--doc-bg-soft);
    border-right: 1px solid var(--doc-border);
    padding: calc(var(--doc-header-h) + 14px) 14px 40px 14px;
    transform: translateX(-100%);
    transition: transform .22s ease;
  }
  .docs-sidebar.open { transform: translateX(0); }

  .docs-main { padding: 24px 0 80px; }
  .docs-main article { max-width: 100%; }
  .docs-main h2 { font-size: 24px; }
  .docs-main h2::before { display: none; }

  .doc-features { grid-template-columns: 1fr; }
  .doc-pager { grid-template-columns: 1fr; }
  .doc-pager a.next { text-align: left; }
}