/* =========================================================================
   Karexia — Documentation (document.karexia.com)
   Self-contained static styles. Indigo-branded, light/dark, responsive, a11y.
   ========================================================================= */

:root {
  /* Brand — indigo (matches the product: indigo-600 light / indigo-500 dark) */
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-soft: rgba(79, 70, 229, 0.10);
  --accent-ring: rgba(79, 70, 229, 0.35);

  /* Surfaces & text (light) */
  --bg: #ffffff;
  --bg-subtle: #f7f8fb;
  --surface: #ffffff;
  --surface-2: #f3f4f8;
  --border: #e6e8ef;
  --border-strong: #d4d7e2;
  --fg: #1a1d29;
  --fg-muted: #5a6072;
  --fg-faint: #858ba0;

  --code-bg: #f4f5f9;
  --code-fg: #3a3f52;
  --pre-bg: #1b1e2b;
  --pre-fg: #e7e9f3;

  --success: #16a34a;
  --warning: #b45309;
  --danger: #dc2626;
  --info: #2563eb;

  --radius: 10px;
  --radius-lg: 14px;
  --shadow-1: 0 1px 2px rgba(20, 24, 40, 0.06), 0 1px 3px rgba(20, 24, 40, 0.08);
  --shadow-2: 0 4px 12px rgba(20, 24, 40, 0.10), 0 2px 6px rgba(20, 24, 40, 0.06);

  --sidebar-w: 288px;
  --toc-w: 232px;
  --topbar-h: 60px;
  --maxw: 820px;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
  --font-mono: "SFMono-Regular", ui-monospace, "JetBrains Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
}

:root:not([data-theme="light"]) {
  @media (prefers-color-scheme: dark) {
    color-scheme: dark;
  }
}

/* Dark theme — via prefers-color-scheme (unless forced light) and via [data-theme=dark] */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --accent: #818cf8;
    --accent-hover: #a5b4fc;
    --accent-soft: rgba(129, 140, 248, 0.14);
    --accent-ring: rgba(129, 140, 248, 0.45);

    --bg: #0c0e16;
    --bg-subtle: #0f111b;
    --surface: #141725;
    --surface-2: #1a1e2e;
    --border: #262a3b;
    --border-strong: #353a4f;
    --fg: #e9ebf4;
    --fg-muted: #a2a8bd;
    --fg-faint: #767d94;

    --code-bg: #1a1e2e;
    --code-fg: #cdd2e6;
    --pre-bg: #080a11;
    --pre-fg: #e7e9f3;

    --success: #4ade80;
    --warning: #fbbf24;
    --danger: #f87171;
    --info: #60a5fa;

    --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-2: 0 6px 20px rgba(0, 0, 0, 0.5);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --accent: #818cf8;
  --accent-hover: #a5b4fc;
  --accent-soft: rgba(129, 140, 248, 0.14);
  --accent-ring: rgba(129, 140, 248, 0.45);

  --bg: #0c0e16;
  --bg-subtle: #0f111b;
  --surface: #141725;
  --surface-2: #1a1e2e;
  --border: #262a3b;
  --border-strong: #353a4f;
  --fg: #e9ebf4;
  --fg-muted: #a2a8bd;
  --fg-faint: #767d94;

  --code-bg: #1a1e2e;
  --code-fg: #cdd2e6;
  --pre-bg: #080a11;
  --pre-fg: #e7e9f3;

  --success: #4ade80;
  --warning: #fbbf24;
  --danger: #f87171;
  --info: #60a5fa;

  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-2: 0 6px 20px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}

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

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 200;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
}
.skip-link:focus { left: 12px; }

/* ---------------------------------------------------------------- Top bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 60;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 16px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--fg);
  flex-shrink: 0;
}
.brand:hover { text-decoration: none; }
.brand .logo {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 16px;
  box-shadow: var(--shadow-1);
}
.brand .brand-name { font-size: 16px; letter-spacing: -0.01em; }
.brand .brand-sub {
  font-size: 12px;
  font-weight: 500;
  color: var(--fg-faint);
  padding-left: 8px;
  margin-left: 6px;
  border-left: 1px solid var(--border);
}

.topbar-spacer { flex: 1; }

.search-wrap {
  position: relative;
  flex: 1;
  max-width: 420px;
}
.search-wrap svg { position: absolute; left: 11px; top: 50%; transform: translateY(-50%); color: var(--fg-faint); }
#search {
  width: 100%;
  height: 38px;
  padding: 0 14px 0 36px;
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  background: var(--surface-2);
  color: var(--fg);
  font-size: 14px;
  font-family: inherit;
}
#search::placeholder { color: var(--fg-faint); }
#search:focus { border-color: var(--accent); background: var(--surface); }

.icon-btn {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  background: var(--surface-2);
  color: var(--fg-muted);
  cursor: pointer;
  flex-shrink: 0;
}
.icon-btn:hover { color: var(--fg); border-color: var(--accent); }
.theme-icon-dark { display: none; }
:root[data-theme="dark"] .theme-icon-dark { display: block; }
:root[data-theme="dark"] .theme-icon-light { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-icon-dark { display: block; }
  :root:not([data-theme="light"]) .theme-icon-light { display: none; }
}

#menu-btn { display: none; }

/* ----------------------------------------------------------------- Layout */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr) var(--toc-w);
  align-items: start;
  max-width: 1500px;
  margin: 0 auto;
}

/* --------------------------------------------------------------- Sidebar */
.sidebar {
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 22px 12px 48px 20px;
  border-right: 1px solid var(--border);
  background: var(--bg-subtle);
}
.sidebar::-webkit-scrollbar { width: 9px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 9px; }

.nav-group { margin-bottom: 20px; }
.nav-group > h3 {
  margin: 0 0 6px;
  padding: 0 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--fg-faint);
}
.nav-group ul { list-style: none; margin: 0; padding: 0; }
.nav-group li { margin: 1px 0; }
.nav-group a {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 10px;
  border-radius: 8px;
  color: var(--fg-muted);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.3;
}
.nav-group a:hover { background: var(--surface-2); color: var(--fg); text-decoration: none; }
.nav-group a.active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}
.nav-group a .nav-emoji { font-size: 15px; width: 18px; text-align: center; flex-shrink: 0; }
.nav-hint {
  display: none;
  padding: 16px 10px;
  color: var(--fg-faint);
  font-size: 13px;
}

/* --------------------------------------------------------------- Content */
.content {
  min-width: 0;
  padding: 32px 48px 120px;
}
.content-inner { max-width: var(--maxw); margin: 0 auto; }

section.doc { scroll-margin-top: calc(var(--topbar-h) + 16px); padding-top: 8px; }
section.doc + section.doc { margin-top: 20px; padding-top: 28px; border-top: 1px solid var(--border); }

.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.content h1 {
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}
.content h2 {
  font-size: 26px;
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 2px 0 14px;
  scroll-margin-top: calc(var(--topbar-h) + 16px);
}
.content h3 {
  font-size: 18px;
  margin: 28px 0 8px;
  letter-spacing: -0.01em;
  scroll-margin-top: calc(var(--topbar-h) + 16px);
}
.content h4 { font-size: 15px; margin: 20px 0 6px; color: var(--fg); }
.content p { margin: 10px 0; color: var(--fg); }
.lead { font-size: 18px; color: var(--fg-muted); line-height: 1.6; }

.content ul, .content ol { margin: 10px 0; padding-left: 22px; }
.content li { margin: 5px 0; }
.content li::marker { color: var(--accent); }

.content hr { border: none; border-top: 1px solid var(--border); margin: 28px 0; }

/* inline code / pre */
code {
  font-family: var(--font-mono);
  font-size: 0.86em;
  background: var(--code-bg);
  color: var(--code-fg);
  padding: 2px 6px;
  border-radius: 5px;
  border: 1px solid var(--border);
}
pre {
  background: var(--pre-bg);
  color: var(--pre-fg);
  padding: 16px 18px;
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.6;
  margin: 14px 0;
}
pre code { background: none; border: none; color: inherit; padding: 0; font-size: 13.5px; }

/* ------------------------------------------------------------ Components */
.callout {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface-2);
  margin: 16px 0;
  font-size: 14.5px;
}
.callout .ico { flex-shrink: 0; font-size: 18px; line-height: 1.5; }
.callout p:first-child { margin-top: 0; }
.callout p:last-child { margin-bottom: 0; }
.callout.tip { border-left: 3px solid var(--success); }
.callout.note { border-left: 3px solid var(--info); }
.callout.warn { border-left: 3px solid var(--warning); }
.callout.compliance { border-left: 3px solid var(--accent); }
.callout strong { color: var(--fg); }

.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 2px 8px;
  border-radius: 999px;
  vertical-align: middle;
  text-transform: uppercase;
}
.badge.live { background: rgba(22,163,74,.14); color: var(--success); }
.badge.gated { background: rgba(180,83,9,.14); color: var(--warning); }
.badge.soon { background: var(--surface-2); color: var(--fg-faint); }
.badge.flag { background: var(--accent-soft); color: var(--accent); }

/* Steps */
ol.steps { counter-reset: step; list-style: none; padding-left: 0; margin: 16px 0; }
ol.steps > li {
  counter-increment: step;
  position: relative;
  padding: 0 0 2px 44px;
  margin: 0 0 18px;
}
ol.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  display: grid;
  place-items: center;
}
ol.steps > li > strong { display: block; margin-bottom: 2px; }

/* Feature cards grid */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
  margin: 18px 0;
}
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  padding: 16px 18px;
  box-shadow: var(--shadow-1);
}
.card h4 { margin: 0 0 4px; display: flex; align-items: center; gap: 8px; }
.card h4 .nav-emoji { font-size: 18px; }
.card p { margin: 0; font-size: 13.5px; color: var(--fg-muted); }

/* Hub / feature tables */
.table-wrap { overflow-x: auto; margin: 16px 0; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { background: var(--surface-2); font-weight: 600; font-size: 12.5px; letter-spacing: 0.02em; color: var(--fg-muted); }
tr:last-child td { border-bottom: none; }
td code { white-space: nowrap; }

.key-val { font-size: 14px; }
.key-val dt { font-weight: 600; color: var(--fg); margin-top: 12px; }
.key-val dd { margin: 2px 0 0; color: var(--fg-muted); }

/* FAQ */
details.faq {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  margin: 10px 0;
  overflow: hidden;
}
details.faq > summary {
  cursor: pointer;
  padding: 14px 18px;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}
details.faq > summary::-webkit-details-marker { display: none; }
details.faq > summary::after { content: "+"; color: var(--accent); font-size: 20px; font-weight: 400; }
details.faq[open] > summary::after { content: "–"; }
details.faq > summary:hover { background: var(--surface-2); }
details.faq .faq-body { padding: 0 18px 16px; color: var(--fg-muted); font-size: 14.5px; }
details.faq .faq-body p:first-child { margin-top: 0; }

/* Hero */
.hero {
  background:
    radial-gradient(900px 320px at 12% -10%, var(--accent-soft), transparent 60%);
  border-radius: var(--radius-lg);
  padding: 4px 0 2px;
  margin-bottom: 8px;
}

/* --------------------------------------------------------- Right-side TOC */
.toc {
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 32px 20px 48px 8px;
  font-size: 13px;
}
.toc h4 {
  margin: 0 0 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--fg-faint);
}
.toc ul { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--border); }
.toc li a {
  display: block;
  padding: 4px 0 4px 14px;
  margin-left: -2px;
  border-left: 2px solid transparent;
  color: var(--fg-faint);
  line-height: 1.4;
}
.toc li a:hover { color: var(--fg); text-decoration: none; }
.toc li a.active { color: var(--accent); border-left-color: var(--accent); font-weight: 600; }
.toc li.sub a { padding-left: 26px; font-size: 12.5px; }

/* No-results state */
.no-results { display: none; padding: 10px; color: var(--fg-faint); font-size: 13px; }

/* Footer inside content */
.doc-footer {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--fg-faint);
  font-size: 13px;
}

/* Backdrop for mobile drawer */
.backdrop {
  display: none;
  position: fixed;
  inset: var(--topbar-h) 0 0 0;
  background: rgba(0,0,0,.45);
  z-index: 45;
}

/* --------------------------------------------------------- Responsive */
@media (max-width: 1180px) {
  .layout { grid-template-columns: var(--sidebar-w) minmax(0, 1fr); }
  .toc { display: none; }
  .content { padding: 32px 40px 120px; }
}

@media (max-width: 920px) {
  :root { --sidebar-w: 280px; }
  #menu-btn { display: grid; }
  .layout { grid-template-columns: minmax(0, 1fr); }
  .search-wrap { max-width: none; }
  .brand .brand-sub { display: none; }

  .sidebar {
    position: fixed;
    top: var(--topbar-h);
    left: 0;
    bottom: 0;
    width: var(--sidebar-w);
    z-index: 50;
    transform: translateX(-100%);
    transition: transform 0.22s ease;
    box-shadow: var(--shadow-2);
  }
  body.nav-open .sidebar { transform: translateX(0); }
  body.nav-open .backdrop { display: block; }
  .content { padding: 28px 16px 100px; }
}

@media (max-width: 520px) {
  body { font-size: 15.5px; }
  .content h1 { font-size: 26px; }
  .content h2 { font-size: 22px; }
  .cards { grid-template-columns: 1fr; }
}