/* ══════════════════════════════════════════════════════════════
   Digraph Docs — dark documentation layout.
   Same palette as the product and the landing page.
   ══════════════════════════════════════════════════════════════ */

:root {
  --bg: #08080b;
  --bg-2: #0c0c11;
  --surface: #121218;
  --surface-2: #181820;
  --border: #25252e;
  --border-2: #343440;
  --text: #ececf1;
  --muted: #a2a2af;
  --dim: #71717e;
  --accent: #7b8cff;
  --accent-2: #2563eb;
  --accent-soft: rgba(123, 140, 255, 0.12);
  --ok: #4ade80;
  --warn: #fbbf24;
  --danger: #f87171;
  --radius: 12px;
  --mono: "Cascadia Code", "Fira Code", Consolas, ui-monospace, monospace;
  --ui: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --sidebar: 264px;
  --toc: 210px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(760px 420px at 8% -6%, rgba(37, 99, 235, 0.12), transparent 62%),
    var(--bg);
  color: var(--text);
  font: 15.5px/1.7 var(--ui);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
p { margin: 0 0 14px; }
ul, ol { margin: 0 0 16px; padding-left: 22px; }
li { margin: 4px 0; }
li > ul, li > ol { margin: 6px 0; }
strong, b { color: var(--text); }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; letter-spacing: -0.015em; }
img, svg { max-width: 100%; }

code {
  font-family: var(--mono);
  font-size: 0.87em;
  color: #cfd3ff;
  background: rgba(123, 140, 255, 0.10);
  border: 1px solid rgba(123, 140, 255, 0.14);
  border-radius: 5px;
  padding: 1px 5px;
  overflow-wrap: anywhere;
}

kbd {
  font: 600 11px/1 var(--mono);
  padding: 3px 5px;
  border: 1px solid var(--border-2);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: var(--surface-2);
  color: var(--muted);
}

::selection { background: rgba(123, 140, 255, 0.32); }

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

.skip {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--accent-2);
  color: #fff;
  border-radius: 8px;
}
.skip:focus { top: 12px; }

/* ── Top bar ───────────────────────────────────────────── */

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 16px;
  height: 60px;
  padding: 0 24px;
  border-bottom: 1px solid var(--border);
  background: rgba(8, 8, 11, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--text);
  font-size: 16px;
  font-weight: 700;
}
.brand:hover { text-decoration: none; }
.brand svg circle { fill: none; stroke: var(--accent); stroke-width: 2; }
.brand svg path { fill: none; stroke: var(--accent); stroke-width: 1.6; opacity: 0.7; }
.brand__tag {
  padding: 2px 7px;
  border: 1px solid var(--border-2);
  border-radius: 5px;
  font: 600 10px/1.6 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
}
.topbar__spacer { flex: 1; }
.topbar__hint { font-size: 12px; color: var(--dim); }

.burger {
  display: none;
  width: 38px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--border-2);
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
}
.burger span {
  display: block;
  width: 16px;
  height: 2px;
  margin: 3.5px auto;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* ── Layout ────────────────────────────────────────────── */

.layout {
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr) var(--toc);
  gap: 40px;
  max-width: 1360px;
  margin: 0 auto;
  padding: 32px 28px 80px;
}

/* ── Sidebar ───────────────────────────────────────────── */

.sidebar {
  position: sticky;
  top: 84px;
  align-self: start;
  max-height: calc(100vh - 104px);
  overflow-y: auto;
  padding-right: 6px;
}
.search {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 10px;
  margin-bottom: 18px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--surface);
}
.search svg { width: 15px; height: 15px; flex-shrink: 0; color: var(--dim); }
.search input {
  flex: 1;
  min-width: 0;
  height: 36px;
  border: 0;
  background: transparent;
  color: var(--text);
  font: 13px var(--ui);
  outline: none;
}
.search input::placeholder { color: var(--dim); }

.nav__group { margin-bottom: 18px; }
.nav__label {
  display: block;
  margin-bottom: 6px;
  padding-left: 10px;
  font: 700 10px/1.4 var(--ui);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dim);
}
.nav a {
  display: block;
  padding: 6px 10px;
  border-left: 2px solid transparent;
  border-radius: 0 7px 7px 0;
  font-size: 14px;
  color: var(--muted);
}
.nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  text-decoration: none;
}
.nav a.is-active {
  border-left-color: var(--accent);
  background: var(--accent-soft);
  color: #dfe3ff;
  font-weight: 600;
}
.nav a[hidden] { display: none; }
.nav__group[hidden] { display: none; }
.sidebar__foot {
  margin: 26px 0 0;
  padding: 12px 10px 0;
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--dim);
}

/* ── Content ───────────────────────────────────────────── */

.content { min-width: 0; }
.crumbs {
  margin-bottom: 14px;
  font: 600 11px/1.4 var(--ui);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dim);
}
.crumbs a { color: var(--dim); }
.crumbs a:hover { color: var(--accent); text-decoration: none; }

.content h1 {
  font-size: clamp(28px, 3.4vw, 38px);
  font-weight: 800;
  letter-spacing: -0.03em;
}
.lead {
  margin-top: 14px;
  font-size: 16.5px;
  line-height: 1.7;
  color: var(--muted);
}
.content h2 {
  margin: 44px 0 14px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-size: 23px;
  font-weight: 750;
}
.content h3 { margin: 28px 0 10px; font-size: 17.5px; font-weight: 700; }
.content h4 { margin: 20px 0 8px; font-size: 15px; }
.content > article > p, .content li { color: #c5c5d0; }
.content ul li::marker { color: var(--dim); }

.anchor {
  margin-left: 8px;
  color: var(--dim);
  opacity: 0;
  font-weight: 400;
  text-decoration: none;
  transition: opacity 0.15s;
}
h2:hover .anchor, h3:hover .anchor { opacity: 1; }
.anchor:hover { color: var(--accent); text-decoration: none; }

/* ── Table of contents ─────────────────────────────────── */

.toc {
  position: sticky;
  top: 84px;
  align-self: start;
  max-height: calc(100vh - 104px);
  overflow-y: auto;
  font-size: 13px;
}
.toc__label {
  display: block;
  margin-bottom: 8px;
  font: 700 10px/1.4 var(--ui);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dim);
}
.toc a {
  display: block;
  padding: 4px 0 4px 10px;
  border-left: 1px solid var(--border);
  color: var(--dim);
  line-height: 1.45;
}
.toc a:hover { color: var(--text); text-decoration: none; }
.toc a.is-active { border-left-color: var(--accent); color: var(--accent); }
.toc a.toc__sub { padding-left: 22px; font-size: 12.5px; }

/* ── Code ──────────────────────────────────────────────── */

.pre-wrap { position: relative; margin: 0 0 18px; }
pre {
  margin: 0;
  padding: 15px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #0b0b10;
  overflow-x: auto;
  font: 12.8px/1.7 var(--mono);
  color: #d7d9e6;
  tab-size: 2;
}
pre code {
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font-size: inherit;
  white-space: pre;
}
.copy {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 4px 9px;
  border: 1px solid var(--border-2);
  border-radius: 6px;
  background: rgba(18, 18, 24, 0.92);
  color: var(--dim);
  font: 600 10.5px/1 var(--ui);
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s, color 0.15s;
}
.pre-wrap:hover .copy, .copy:focus-visible { opacity: 1; }
.copy:hover { color: var(--text); border-color: var(--accent); }

/* ── Tables ────────────────────────────────────────────── */

.table-wrap {
  margin: 0 0 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow-x: auto;
  background: var(--surface);
}
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td {
  padding: 10px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
}
thead th {
  font: 700 10.5px/1.4 var(--ui);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dim);
  background: rgba(255, 255, 255, 0.025);
  white-space: nowrap;
}
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: rgba(255, 255, 255, 0.015); }
td:first-child { color: var(--text); }
td code { white-space: nowrap; }
.table-wrap table { min-width: 560px; }

/* ── Callouts ──────────────────────────────────────────── */

.note, .warn, .tip {
  margin: 0 0 18px;
  padding: 13px 16px;
  border: 1px solid var(--border);
  border-left-width: 3px;
  border-radius: 0 10px 10px 0;
  background: rgba(255, 255, 255, 0.02);
  font-size: 14px;
  color: var(--muted);
}
.note { border-left-color: var(--accent); }
.warn { border-left-color: var(--warn); background: rgba(251, 191, 36, 0.05); }
.tip { border-left-color: var(--ok); background: rgba(74, 222, 128, 0.04); }
.note b, .warn b, .tip b { color: var(--text); }
.note p:last-child, .warn p:last-child, .tip p:last-child { margin-bottom: 0; }

/* ── Cards & misc ──────────────────────────────────────── */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
  margin: 22px 0 8px;
}
.card {
  display: block;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  transition: border-color 0.15s, background 0.15s;
}
.card:hover { text-decoration: none; border-color: rgba(123, 140, 255, 0.4); background: var(--surface-2); }
.card b { display: block; margin-bottom: 4px; font-size: 14px; }
.card span { font-size: 12.5px; color: var(--dim); line-height: 1.5; }

.checklist { padding-left: 0; list-style: none; }
.checklist li { position: relative; padding-left: 26px; }
.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 2px;
  color: var(--ok);
  font-weight: 700;
}

.badge {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 5px;
  font: 700 10px/1.7 var(--mono);
  letter-spacing: 0.04em;
  vertical-align: middle;
}
.badge--ok { color: var(--ok); background: rgba(74, 222, 128, 0.12); }
.badge--warn { color: var(--warn); background: rgba(251, 191, 36, 0.12); }
.badge--dark { color: var(--muted); background: rgba(255, 255, 255, 0.06); }

.kv {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin: 18px 0;
}
.kv > div {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.015);
}
.kv dt { font: 700 10px/1.4 var(--ui); letter-spacing: 0.08em; text-transform: uppercase; color: var(--dim); }
.kv dd { margin: 4px 0 0; font-size: 14px; color: var(--text); }

.flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 20px 0;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.015);
}
.flow__node {
  padding: 8px 12px;
  border: 1px solid var(--border-2);
  border-radius: 8px;
  background: var(--surface-2);
  font-size: 12.5px;
  color: var(--text);
}
.flow__node--accent { border-color: rgba(123, 140, 255, 0.4); background: var(--accent-soft); }
.flow__arrow { color: var(--dim); font-family: var(--mono); }
.flow__stack { display: flex; flex-direction: column; gap: 6px; }

/* ── Pager & footer ────────────────────────────────────── */

.pager {
  display: flex;
  gap: 12px;
  margin-top: 52px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
}
.pager a {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
}
.pager a:hover { border-color: rgba(123, 140, 255, 0.4); text-decoration: none; }
.pager span { display: block; font-size: 11px; color: var(--dim); }
.pager__next { text-align: right; }

.footer {
  border-top: 1px solid var(--border);
  padding: 26px 24px;
  font-size: 12px;
  color: var(--dim);
}
.footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  max-width: 1360px;
  margin: 0 auto;
}
.footer__inner a { color: var(--muted); }

/* ── Scrollbars ────────────────────────────────────────── */

.sidebar::-webkit-scrollbar, .toc::-webkit-scrollbar, pre::-webkit-scrollbar { width: 8px; height: 8px; }
.sidebar::-webkit-scrollbar-thumb, .toc::-webkit-scrollbar-thumb, pre::-webkit-scrollbar-thumb {
  background: #2a2a34;
  border-radius: 4px;
}

/* ── Responsive ────────────────────────────────────────── */

@media (max-width: 1180px) {
  .layout { grid-template-columns: var(--sidebar) minmax(0, 1fr); }
  .toc { display: none; }
}

@media (max-width: 860px) {
  .burger { display: block; }
  .topbar__hint { display: none; }
  .layout { display: block; padding: 20px 18px 60px; }
  .sidebar {
    position: fixed;
    top: 60px;
    left: 0;
    bottom: 0;
    z-index: 39;
    width: min(320px, 86vw);
    max-height: none;
    padding: 18px 14px 40px;
    border-right: 1px solid var(--border-2);
    background: #0d0d13;
    transform: translateX(-102%);
    transition: transform 0.22s ease;
    overflow-y: auto;
  }
  .sidebar.is-open { transform: none; box-shadow: 24px 0 60px rgba(0, 0, 0, 0.5); }
  .scrim {
    position: fixed;
    inset: 60px 0 0 0;
    z-index: 38;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(1px);
  }
  .content h1 { font-size: 29px; }
  .content h2 { margin-top: 34px; }
  .pager { flex-direction: column; }
  .pager__next { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; }
}

/* ── Config generator ─────────────────────────────────────── */

.gen-form {
  display: grid;
  gap: 16px;
  max-width: 560px;
  margin: 22px 0 30px;
}
.gen-form label {
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
}
.gen-form input,
.gen-form select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-2);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: 14px/1.4 var(--ui);
}
.gen-form input:focus,
.gen-form select:focus {
  outline: 2px solid rgba(123, 140, 255, 0.45);
  outline-offset: 1px;
  border-color: var(--accent);
}
.gen-button {
  justify-self: start;
  padding: 9px 16px;
  border: 1px solid rgba(123, 140, 255, 0.45);
  border-radius: 8px;
  background: linear-gradient(180deg, #5d76ff, #3554e0);
  color: #fff;
  font: 600 13px/1 var(--ui);
  cursor: pointer;
}
.gen-button:hover { filter: brightness(1.08); }
.gen-button:disabled { opacity: 0.6; cursor: default; }
.gen-button--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-2);
}
.gen-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 20px;
}
.gen-error {
  margin: 0;
  padding: 10px 12px;
  border-left: 2px solid var(--danger);
  background: rgba(248, 113, 113, 0.06);
  color: #fecaca;
  font-size: 13px;
}
.gen-token {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  overflow-wrap: anywhere;
}
.gen-token code { font-size: 12px; }
.gen-hint { color: var(--dim); font-size: 12.5px; }
.gen-blob code {
  display: block;
  max-height: 220px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
}