/* ==========================================================================
   Tiger documentation theme. One stylesheet for the whole docs site.
   Shared chrome (top bar, sidebar, footer, TOC) is injected by nav.js, so
   every page only ships its own <article> content.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,400..800&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  --sans: 'Bricolage Grotesque', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --bg: #ffffff;
  --bg-soft: #f7f8fa;
  --bg-code: #f6f7f9;
  --sidebar-bg: #fbfcfd;
  --text: #1b1f27;
  --text-dim: #545b68;
  --text-faint: #828a99;
  --border: #e7e9ee;
  --border-strong: #d7dae1;
  --accent: #ff6a1a;
  --accent-ink: #ffffff;
  --accent-weak: rgba(255, 106, 26, 0.1);
  --good: #1f9d57;
  --bad: #d23f3f;
  --warn: #c98a00;
  --shadow: 0 8px 30px rgba(20, 26, 40, 0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --topbar-h: 58px;
  --sidebar-w: 270px;
  --toc-w: 220px;
  --content-max: 760px;
}

[data-theme='dark'] {
  --bg: #0e1016;
  --bg-soft: #141822;
  --bg-code: #161a24;
  --sidebar-bg: #11141c;
  --text: #e8ebf2;
  --text-dim: #aab2c2;
  --text-faint: #7c8597;
  --border: #232936;
  --border-strong: #2e3543;
  --accent: #ff8442;
  --accent-ink: #14100c;
  --accent-weak: rgba(255, 132, 66, 0.14);
  --good: #46c483;
  --bad: #f0686a;
  --warn: #e0a93a;
  --shadow: 0 12px 38px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--topbar-h) + 16px); }

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

/* ---------- Top bar ---------- */
.topbar {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 40;
}
.topbar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  color: var(--text);
}
.topbar .brand img { width: 26px; height: 26px; border-radius: 7px; }
.topbar .brand .v { font: 600 11px/1 var(--mono); color: var(--text-faint); padding-top: 3px; }
.topbar .grow { flex: 1; }
.topbar .search {
  position: relative;
  width: min(320px, 38vw);
}
.topbar .search input {
  width: 100%;
  font: 400 13.5px/1 var(--sans);
  padding: 8px 12px 8px 32px;
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  background: var(--bg-soft);
  color: var(--text);
}
.topbar .search input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-weak); }
.topbar .search svg { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: var(--text-faint); }
.topbar .tb-link { color: var(--text-dim); display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px; }
.topbar .tb-link:hover { color: var(--text); text-decoration: none; }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg-soft); color: var(--text-dim); cursor: pointer;
}
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); }
.menu-toggle { display: none; }

/* ---------- Layout ---------- */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  align-items: start;
}
.sidebar {
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 22px 14px 60px 22px;
  border-right: 1px solid var(--border);
  background: var(--sidebar-bg);
}
.sidebar .group { margin-bottom: 22px; }
.sidebar .group > .label {
  font-size: 11.5px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--text-faint); margin: 0 0 8px 8px;
}
.sidebar a {
  display: block;
  padding: 6px 10px;
  margin: 1px 0;
  border-radius: 7px;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.35;
}
.sidebar a:hover { background: var(--bg-soft); color: var(--text); text-decoration: none; }
.sidebar a.active { background: var(--accent-weak); color: var(--accent); font-weight: 600; }
.sidebar a.hidden { display: none; }

.main {
  min-width: 0;
  padding: 0 max(24px, 4vw);
  display: grid;
  grid-template-columns: minmax(0, var(--content-max)) var(--toc-w);
  gap: 48px;
  justify-content: center;
}
.content { padding: 40px 0 80px; min-width: 0; }
article { min-width: 0; }

/* ---------- Right TOC ---------- */
.toc {
  position: sticky;
  top: calc(var(--topbar-h) + 40px);
  align-self: start;
  max-height: calc(100vh - var(--topbar-h) - 80px);
  overflow-y: auto;
  padding-left: 16px;
  border-left: 1px solid var(--border);
  font-size: 13px;
}
.toc .label { font-weight: 700; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.05em; font-size: 11px; margin-bottom: 10px; }
.toc a { display: block; padding: 4px 0; color: var(--text-dim); }
.toc a:hover { color: var(--text); text-decoration: none; }
.toc a.h3 { padding-left: 14px; font-size: 12.5px; }
.toc a.active { color: var(--accent); font-weight: 600; }

/* ---------- Typography ---------- */
.content h1 { font-size: 33px; line-height: 1.15; font-weight: 800; letter-spacing: -0.02em; margin: 0 0 10px; }
.content h2 { font-size: 23px; font-weight: 700; letter-spacing: -0.01em; margin: 42px 0 12px; padding-top: 6px; }
.content h3 { font-size: 18px; font-weight: 700; margin: 28px 0 8px; }
.content .lead { font-size: 18.5px; color: var(--text-dim); margin: 0 0 8px; line-height: 1.55; }
.content p, .content li { color: var(--text); }
.content ul, .content ol { padding-left: 22px; }
.content li { margin: 5px 0; }
.content hr { border: none; border-top: 1px solid var(--border); margin: 36px 0; }
.breadcrumb { font-size: 13px; color: var(--text-faint); margin-bottom: 14px; }
.breadcrumb a { color: var(--text-faint); }

/* code */
code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 5px;
}
pre {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
}
pre code { background: none; border: none; padding: 0; font-size: 13px; }
kbd {
  font-family: var(--mono); font-size: 12px;
  background: var(--bg-soft); border: 1px solid var(--border-strong);
  border-bottom-width: 2px; border-radius: 6px; padding: 1px 6px;
}

/* tables / comparison matrix */
.table-wrap { overflow-x: auto; margin: 18px 0; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
thead th { font-weight: 700; border-bottom: 2px solid var(--border-strong); white-space: nowrap; }
tbody tr:hover { background: var(--bg-soft); }
table .yes { color: var(--good); font-weight: 700; }
table .no { color: var(--bad); font-weight: 700; }
table .partial { color: var(--warn); font-weight: 700; }
table .col-tiger { background: var(--accent-weak); }
th.col-tiger { color: var(--accent); }

/* callouts */
.callout {
  display: flex; gap: 12px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--text-faint);
  background: var(--bg-soft);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  margin: 18px 0;
  font-size: 14.5px;
}
.callout.tip { border-left-color: var(--good); }
.callout.note { border-left-color: var(--accent); }
.callout.warn { border-left-color: var(--warn); }
.callout .ic { flex: none; font-weight: 800; }
.callout.tip .ic { color: var(--good); }
.callout.note .ic { color: var(--accent); }
.callout.warn .ic { color: var(--warn); }
.callout p { margin: 0; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 600; font-size: 14.5px;
  padding: 10px 18px; border-radius: 10px;
  border: 1px solid var(--border-strong); background: var(--bg-soft); color: var(--text); cursor: pointer;
}
.btn:hover { border-color: var(--accent); text-decoration: none; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.05); }

/* home hero + cards */
.hero { padding: 30px 0 12px; }
.hero h1 { font-size: 44px; line-height: 1.08; letter-spacing: -0.03em; margin: 0 0 14px; }
.hero .lead { font-size: 20px; max-width: 620px; }
.hero .cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; margin: 24px 0; }
.card {
  display: block; padding: 18px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-soft); color: inherit; transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); text-decoration: none; }
.card .t { font-weight: 700; font-size: 15.5px; margin-bottom: 4px; }
.card .d { font-size: 13.5px; color: var(--text-dim); }
.pill { display: inline-block; font: 600 11px/1.4 var(--mono); color: var(--accent); background: var(--accent-weak); padding: 3px 9px; border-radius: 999px; }

/* prev / next */
.page-nav { display: flex; justify-content: space-between; gap: 14px; margin-top: 48px; border-top: 1px solid var(--border); padding-top: 20px; }
.page-nav a { display: block; flex: 1; padding: 14px 16px; border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); }
.page-nav a:hover { border-color: var(--accent); text-decoration: none; }
.page-nav a.next { text-align: right; }
.page-nav .dir { font-size: 12px; color: var(--text-faint); }
.page-nav .ttl { font-weight: 600; }

/* footer */
.footer { border-top: 1px solid var(--border); padding: 28px max(24px, 4vw); color: var(--text-faint); font-size: 13.5px; display: flex; flex-wrap: wrap; gap: 8px 18px; justify-content: center; }
.footer a { color: var(--text-dim); }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .main { grid-template-columns: minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 860px) {
  .menu-toggle { display: inline-flex; }
  .topbar .search { width: auto; flex: 1; }
  .layout { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed; top: var(--topbar-h); left: 0; bottom: 0; width: min(300px, 84vw);
    transform: translateX(-100%); transition: transform .2s ease; z-index: 45; box-shadow: var(--shadow);
  }
  .sidebar.open { transform: none; }
  .scrim { position: fixed; inset: var(--topbar-h) 0 0 0; background: rgba(8,12,22,.4); z-index: 44; display: none; }
  .scrim.show { display: block; }
}