/* Design tokens and shared components for the documentation site and the home page.
   Colours come from assets/DESIGN.md. Light theme by default; [data-theme="dark"] is
   set before first paint by _includes/theme-init.html, following the reader's system
   setting until they choose a theme with the header switch. */

:root {
  /* Spillkit brand: deep violet ink, lavender surfaces, violet accent, ember for the mark. */
  --bg: #FFFFFF;
  --bg-2: #F7F5FC;
  --surface: #FFFFFF;
  --surface-2: #F1EEF9;
  --line: #E7E2F3;
  --line-2: #D6CFEA;
  --text: #1D1336;
  --text-body: #3B3354;
  --text-2: #4F4768;
  --muted: #625A7C;
  --accent: #5B3FD6;          /* violet: links, current page, focus */
  --accent-solid: #5B3FD6;    /* filled buttons */
  --accent-hover: #4A2FC4;
  --accent-tint: rgba(91, 63, 214, 0.08);
  --on-accent: #FFFFFF;
  --ember: #B5370F;
  --lav: #EEE8FF;
  --brand-gradient: linear-gradient(90deg, #5B3FD6, #B14BD9 35%, #F2557E 65%, #FF8A4C);
  --pass: #1A7F37; --pass-tint: #DAFBE1;
  --warn: #9A6700; --warn-tint: #FFF8C5;
  --fail: #C8261B; --fail-tint: #FDE7E4;
  --info: #5B3FD6; --info-tint: #F1EDFF;
  --header-bg: #FFFFFF;
  --code-bg: #17112B;
  --code-head: #1F1838;
  --code-line: rgba(237, 233, 255, 0.08);
  --code-text: #EDE9FF;
  --shadow-1: 0 1px 2px rgba(29, 19, 54, 0.06);
  --shadow-2: 0 1px 2px rgba(29, 19, 54, 0.06), 0 12px 32px -12px rgba(29, 19, 54, 0.18);
  --shadow-3: 0 2px 4px rgba(29, 19, 54, 0.06), 0 30px 60px -20px rgba(29, 19, 54, 0.35);

  --sans: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, Helvetica, Arial, sans-serif;
  --display: "IBM Plex Sans Condensed", "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --r-s: 8px;
  --r: 14px;
  --r-l: 18px;
  --header-h: 64px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --fast: 150ms;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #120E22;
  --bg-2: #17122B;
  --surface: #1B1530;
  --surface-2: #261E42;
  --line: rgba(237, 233, 255, 0.10);
  --line-2: rgba(237, 233, 255, 0.18);
  --text: #F1EDFF;
  --text-body: #D3CCEB;
  --text-2: #BDB4DA;
  --muted: #9C93BC;
  --accent: #B3A1FF;
  --accent-solid: #8F74F7;
  --accent-hover: #A08AFA;
  --accent-tint: rgba(143, 116, 247, 0.16);
  --on-accent: #120E22;
  --ember: #FF8A73;
  --lav: #2A2150;
  --pass: #3FB950; --pass-tint: rgba(63, 185, 80, 0.12);
  --warn: #D29922; --warn-tint: rgba(210, 153, 34, 0.12);
  --fail: #FF6B5E; --fail-tint: rgba(248, 81, 73, 0.14);
  --info: #B3A1FF; --info-tint: rgba(143, 116, 247, 0.14);
  --header-bg: #120E22;
  --code-bg: #0D0A1A;
  --code-head: #15112A;
  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-2: 0 16px 40px -16px rgba(0, 0, 0, 0.6);
  --shadow-3: 0 40px 100px -30px rgba(0, 0, 0, 0.8);
  color-scheme: dark;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-padding-top: calc(var(--header-h) + 24px); -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
a { color: var(--accent); }
img, svg { max-width: 100%; }
img { height: auto; }
button { font: inherit; color: inherit; }
::selection { background: rgba(255, 107, 61, 0.28); }
:focus-visible { outline: 2px solid var(--accent-solid); outline-offset: 2px; border-radius: 6px; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: 16px; top: -48px; z-index: 100; padding: 8px 16px; border-radius: var(--r-s); background: var(--accent-solid); color: var(--on-accent); font-weight: 600; text-decoration: none; }
.skip:focus { top: 12px; }
kbd { display: inline-flex; align-items: center; justify-content: center; min-width: 20px; height: 20px; padding: 0 5px; border: 1px solid var(--line-2); border-bottom-width: 2px; border-radius: 5px; background: var(--surface); color: var(--text-2); font: 500 11px/1 var(--mono); }
.icon { width: 16px; height: 16px; flex: none; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 32px; }

/* ---------- Illustrations (flat shapes, ink outline; see assets/DESIGN.md) ---------- */
.ill .o { fill: none; stroke: #1D1336; stroke-width: 2.4; stroke-linejoin: round; stroke-linecap: round; }
.ill .fw { fill: #FFFFFF; } .ill .fv { fill: #8F74F7; } .ill .fe { fill: #FF7A4D; } .ill .fp { fill: #FFC7B0; }
.ill .fk { fill: #B9D4FF; } .ill .fs { fill: #F3DDBF; } .ill .fi { fill: #1D1336; } .ill .fr { fill: #E5372B; }
.ill .w { fill: none; stroke: #FFFFFF; stroke-width: 3.2; stroke-linecap: round; stroke-linejoin: round; }
.ill .dashed { stroke-dasharray: 4 4; }
.ill .thick { stroke-width: 9; }
.ill .thin { stroke-width: 1.6; opacity: 0.55; }
.ill .arc { fill: none; stroke: #FF7A4D; stroke-width: 7; stroke-linecap: round; }

/* ---------- Header ---------- */
.docs .site-header::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--brand-gradient); }
.site-header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  background: var(--header-bg);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 32px; height: 100%; max-width: 1440px; margin: 0 auto; padding: 0 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 600; font-size: 16px; letter-spacing: -0.01em; white-space: nowrap; }
.brand img { display: block; }
.main-nav { display: flex; gap: 4px; }
.main-nav a { padding: 6px 12px; border-radius: var(--r-s); color: var(--text-2); text-decoration: none; font-size: 14.5px; font-weight: 500; transition: color var(--fast), background-color var(--fast); }
.main-nav a:hover { color: var(--text); background: var(--surface-2); }
.main-nav a[aria-current="page"] { color: var(--text); }
.header-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.search-trigger {
  display: inline-flex; align-items: center; gap: 8px;
  width: 232px; height: 36px; padding: 0 8px 0 12px;
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--bg-2); color: var(--muted);
  font-size: 14px; text-align: left; cursor: pointer;
  transition: border-color var(--fast), color var(--fast);
}
.search-trigger:hover { border-color: var(--line-2); color: var(--text-2); }
.search-trigger .search-label { flex: 1; }
.icon-btn { display: inline-grid; place-items: center; width: 36px; height: 36px; border: 1px solid transparent; border-radius: 10px; background: none; color: var(--text-2); text-decoration: none; cursor: pointer; transition: color var(--fast), background-color var(--fast); }
.icon-btn:hover { color: var(--text); background: var(--surface-2); }
.icon-btn .icon { width: 18px; height: 18px; }
.incident-link { display: inline-flex; align-items: center; gap: 8px; height: 36px; padding: 0 14px; border: 1px solid var(--line); border-radius: 10px; color: var(--text); text-decoration: none; font-size: 14px; font-weight: 600; white-space: nowrap; transition: border-color var(--fast), background-color var(--fast); }
.incident-link:hover { border-color: color-mix(in srgb, var(--fail) 50%, transparent); background: var(--fail-tint); }
.alert-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--fail); flex: none; }
.theme-toggle .moon, [data-theme="dark"] .theme-toggle .sun { display: none; }
[data-theme="dark"] .theme-toggle .moon { display: block; }
.menu-btn { display: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 20px;
  border: 1px solid var(--line-2); border-radius: 8px;
  background: var(--bg); color: var(--text);
  font-size: 15px; font-weight: 600; text-decoration: none; white-space: nowrap;
  cursor: pointer;
  transition: transform var(--fast) var(--ease), background-color var(--fast), border-color var(--fast), box-shadow var(--fast);
}
.btn:hover { border-color: var(--muted); background: var(--surface-2); }
.btn.primary { background: var(--accent-solid); border-color: var(--accent-solid); color: var(--on-accent); }
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn .arrow { transition: transform var(--fast) var(--ease); }
.btn:hover .arrow, .link-arrow:hover .arrow { transform: translateX(3px); }
.link-arrow { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; text-decoration: none; }

/* ---------- Copy button ---------- */
.copy-btn {
  display: inline-flex; align-items: center; gap: 6px;
  height: 28px; padding: 0 10px;
  border: 1px solid var(--code-line); border-radius: 7px;
  background: rgba(230, 234, 242, 0.04); color: #A3ADBF;
  font: 500 12px/1 var(--sans); cursor: pointer;
  transition: color var(--fast), background-color var(--fast), border-color var(--fast);
}
.copy-btn:hover { color: #E6EAF2; background: rgba(230, 234, 242, 0.08); }
.copy-btn[data-done] { color: #3FB950; border-color: rgba(63, 185, 80, 0.4); }

/* ---------- Search dialog ---------- */
.search-dialog {
  width: min(640px, calc(100vw - 32px)); max-height: min(560px, calc(100dvh - 120px));
  margin: 12vh auto 0; padding: 0;
  border: 1px solid var(--line-2); border-radius: var(--r-l);
  background: var(--surface); color: var(--text);
  box-shadow: var(--shadow-3);
  overflow: hidden;
}
.search-dialog[open] { display: flex; flex-direction: column; animation: dialog-in 160ms var(--ease); }
.search-dialog::backdrop { background: rgba(5, 8, 15, 0.55); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
@keyframes dialog-in { from { opacity: 0; transform: translateY(-8px) scale(0.98); } }
.search-box { display: flex; align-items: center; gap: 12px; padding: 0 16px; border-bottom: 1px solid var(--line); }
.search-box .icon { color: var(--muted); width: 18px; height: 18px; }
.search-box input { flex: 1; min-width: 0; height: 56px; border: 0; outline: 0; background: none; color: var(--text); font: 16px var(--sans); }
.search-box input::placeholder { color: var(--muted); }
.search-box input::-webkit-search-cancel-button { display: none; }
.search-results { flex: 1; overflow-y: auto; margin: 0; padding: 8px; list-style: none; overscroll-behavior: contain; }
.search-results .group { padding: 12px 12px 6px; font: 600 12px/1 var(--sans); color: var(--muted); }
.search-results a { display: block; padding: 10px 12px; border-radius: 10px; color: var(--text); text-decoration: none; }
.search-results a[aria-selected="true"] { background: var(--accent-tint); }
.search-results .r-title { display: flex; align-items: center; gap: 6px; font-size: 14.5px; font-weight: 600; }
.search-results .r-title span { color: var(--muted); font-weight: 500; }
.search-results .r-text { display: block; margin-top: 2px; font-size: 13.5px; line-height: 1.5; color: var(--text-2); overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.search-results mark { background: none; color: var(--accent); font-weight: 600; }
.search-empty { margin: 0; padding: 32px 16px; text-align: center; color: var(--text-2); font-size: 14.5px; }
.search-foot { display: flex; gap: 16px; padding: 10px 16px; border-top: 1px solid var(--line); background: var(--bg-2); color: var(--muted); font-size: 12.5px; }
.search-foot span { display: inline-flex; align-items: center; gap: 4px; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 64px 0 32px; font-size: 14px; color: var(--text-2); }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 32px; }
.footer-brand p { margin: 12px 0 0; max-width: 300px; }
.footer-brand .fine { color: var(--muted); font-size: 13px; }
.footer-col h2 { margin: 0 0 12px; font-size: 13px; font-weight: 600; color: var(--text); letter-spacing: 0; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin: 0 0 8px; }
.footer-col a { color: var(--text-2); text-decoration: none; }
.footer-col a:hover { color: var(--text); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.footer-bottom a { color: var(--muted); }

/* ---------- Small screens ---------- */
@media (max-width: 1100px) {
  .search-trigger { width: 36px; padding: 0; justify-content: center; border-color: transparent; background: none; }
  .search-trigger .search-label, .search-trigger kbd { display: none; }
  .search-trigger .icon { width: 18px; height: 18px; }
}
@media (max-width: 900px) {
  .main-nav { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 600px) {
  :root { --header-h: 56px; }
  .header-inner { padding: 0 16px; gap: 12px; }
  .wrap { padding: 0 20px; }
  .incident-link { display: none; }
  .brand { font-size: 15px; }
}
@media (max-width: 420px) {
  .docs .gh-link { display: none; }
  .header-actions { gap: 4px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}
@media (forced-colors: active) {
  .btn, .search-trigger, .incident-link { border: 1px solid ButtonText; }
}