/* TON618 documentation site — dark, with the black hole's orange accretion disk as accent. */
:root {
  --bg: #0a0a0d;
  --bg-raised: #121217;
  --bg-code: #0e0e12;
  --line: #24242c;
  --text: #dcdce3;
  --text-dim: #8d8d99;
  --accent: #ff7a3d;
  --accent-soft: rgba(255, 122, 61, 0.12);
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;
  --radius: 10px;
  --header-h: 60px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-padding-top: calc(var(--header-h) + 16px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 var(--sans);
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre { font-family: var(--mono); font-variant-ligatures: none; font-feature-settings: "liga" 0, "calt" 0; }
:not(pre) > code {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 0.08em 0.36em;
  font-size: 0.88em;
  overflow-wrap: anywhere;
}
.wrap { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 680px; }
.accent { color: var(--accent); }
.muted { color: var(--text-dim); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(10, 10, 13, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 14px; height: var(--header-h); }
.wordmark {
  display: inline-flex; align-items: center; gap: 10px;
  font: 700 1.2rem var(--mono); color: #fff; letter-spacing: -0.02em;
}
.wordmark:hover { text-decoration: none; }
.wordmark.small { font-size: 1rem; }
.version {
  font: 0.75rem var(--mono); color: var(--text-dim);
  border: 1px solid var(--line); border-radius: 999px; padding: 2px 9px;
}
.version:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }
.site-header nav { margin-left: auto; }
.site-header nav ul { list-style: none; display: flex; gap: 4px; margin: 0; padding: 0; }
.site-header nav a {
  color: var(--text-dim); padding: 6px 10px; border-radius: 7px; font-size: 0.93rem; font-weight: 500;
}
.site-header nav a:hover, .site-header nav a[aria-current="page"] { color: #fff; background: var(--bg-raised); text-decoration: none; }
.site-header nav a.lang { border: 1px solid var(--line); }

/* ---------- Buttons ---------- */
.button {
  display: inline-block; background: var(--accent); color: #140700;
  font-weight: 600; padding: 11px 20px; border-radius: 9px;
}
.button:hover { text-decoration: none; filter: brightness(1.08); }
.button.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.button.ghost:hover { border-color: var(--accent); color: #fff; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }

/* ---------- Home ---------- */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); padding: 72px 0 64px; }
.hero::before {
  content: ""; position: absolute; width: 760px; height: 760px; left: -220px; top: -340px;
  background: radial-gradient(circle, rgba(255, 122, 61, 0.22) 0%, rgba(255, 122, 61, 0.05) 38%, transparent 68%);
  pointer-events: none;
}
.hero-grid { position: relative; display: grid; grid-template-columns: 1fr 1.05fr; gap: 48px; align-items: center; }
.hero h1 { font: 700 clamp(3rem, 8vw, 5rem)/1 var(--mono); letter-spacing: -0.04em; margin: 0 0 18px; color: #fff; }
.eyebrow { margin: 0 0 14px; }
.pill {
  font: 0.78rem var(--mono); color: var(--accent); background: var(--accent-soft);
  border: 1px solid rgba(255, 122, 61, 0.35); border-radius: 999px; padding: 3px 11px;
}
.tagline { font-size: 1.3rem; font-weight: 600; color: #fff; margin: 0 0 12px; line-height: 1.4; }
.lead { color: var(--text-dim); font-size: 1.06rem; margin: 0; }
.band { padding: 56px 0; border-bottom: 1px solid var(--line); }
.band h2 { font-size: 1.6rem; margin: 0 0 22px; color: #fff; letter-spacing: -0.01em; }
.install-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature {
  background: var(--bg-raised); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px;
}
.feature h3 { margin: 0 0 8px; color: #fff; font-size: 1.05rem; }
.feature p { margin: 0; color: var(--text-dim); font-size: 0.95rem; }
.new-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 24px; }
.new-list li a {
  display: block; padding: 12px 16px; border: 1px solid var(--line); border-radius: 9px; color: var(--text);
}
.new-list li a::before { content: "→ "; color: var(--accent); }
.new-list li a:hover { border-color: var(--accent); text-decoration: none; color: #fff; }

/* ---------- Code ---------- */
pre {
  position: relative; margin: 0 0 1.3em;
  background: var(--bg-code); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px; overflow-x: auto; font-size: 0.86rem; line-height: 1.6;
}
body pre code.hljs { background: transparent; padding: 0; overflow: visible; } /* beats the theme, which loads after this file */
.code-figure { margin: 0; min-width: 0; }
.code-figure figcaption {
  font: 0.78rem var(--mono); color: var(--text-dim); padding: 0 4px 6px;
}
.code-figure pre { margin: 0; }
.code-tools { position: absolute; top: 8px; right: 8px; display: flex; gap: 6px; opacity: 0; transition: opacity 0.15s; }
pre:hover .code-tools, pre:focus-within .code-tools { opacity: 1; }
.code-tools button, .code-tools a {
  font: 0.72rem var(--sans); font-weight: 600; color: var(--text); cursor: pointer;
  background: var(--bg-raised); border: 1px solid var(--line); border-radius: 6px; padding: 4px 9px;
}
.code-tools a.run { color: var(--accent); }
.code-tools button:hover, .code-tools a:hover { border-color: var(--accent); text-decoration: none; }
@media (hover: none) { .code-tools { opacity: 1; } }
/* TON618 highlighting extras (see main.js) */
.hljs-ton-prefix { color: var(--accent); }

/* ---------- Docs layout ---------- */
.docs { display: grid; grid-template-columns: 250px minmax(0, 1fr) 200px; gap: 40px; padding-top: 32px; padding-bottom: 64px; }
.sidebar-inner { position: sticky; top: calc(var(--header-h) + 20px); max-height: calc(100vh - var(--header-h) - 40px); overflow-y: auto; padding-right: 6px; }
.sidebar-toggle { display: none; }
.search {
  width: 100%; font: inherit; font-size: 0.9rem; color: var(--text);
  background: var(--bg-raised); border: 1px solid var(--line); border-radius: 8px; padding: 8px 11px; margin-bottom: 14px;
}
.search:focus { outline: none; border-color: var(--accent); }
.search-results { list-style: none; margin: 0 0 16px; padding: 0; }
.search-results li a { display: block; padding: 6px 8px; border-radius: 6px; color: var(--text); font-size: 0.9rem; }
.search-results li a:hover, .search-results li a:focus { background: var(--bg-raised); text-decoration: none; }
.search-results small { display: block; color: var(--text-dim); font-size: 0.78rem; line-height: 1.4; }
.search-results li.empty { color: var(--text-dim); font-size: 0.88rem; padding: 6px 8px; }
.group { margin-bottom: 18px; }
.group-title { font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-dim); margin: 0 0 6px; font-weight: 600; }
.group ul { list-style: none; margin: 0; padding: 0; }
.group li a { display: block; padding: 4px 10px; border-left: 2px solid var(--line); color: var(--text-dim); font-size: 0.9rem; line-height: 1.45; }
.group li a:hover { color: #fff; text-decoration: none; border-left-color: var(--text-dim); }
.group li a[aria-current="page"] { color: var(--accent); border-left-color: var(--accent); font-weight: 500; }

.doc { min-width: 0; }
.doc h1 { font-size: 2.2rem; line-height: 1.2; margin: 0 0 22px; color: #fff; letter-spacing: -0.02em; }
.doc h2 { font-size: 1.45rem; margin: 2.2em 0 0.7em; color: #fff; padding-top: 0.4em; border-top: 1px solid var(--line); }
.doc h3 { font-size: 1.12rem; margin: 1.8em 0 0.6em; color: #fff; }
.doc h2 .anchor, .doc h3 .anchor { color: var(--text-dim); margin-right: 8px; opacity: 0; font-weight: 400; }
.doc h2:hover .anchor, .doc h3:hover .anchor { opacity: 1; text-decoration: none; }
.doc p, .doc li { overflow-wrap: break-word; }
.doc ul, .doc ol { padding-left: 1.3em; }
.doc li { margin: 0.3em 0; }
.doc .lead { margin-bottom: 1.5em; }
.callout { border-left: 3px solid var(--accent); background: var(--accent-soft); padding: 12px 16px; border-radius: 0 8px 8px 0; margin: 0 0 1.3em; }
.table-wrap { overflow-x: auto; margin: 0 0 1.4em; border: 1px solid var(--line); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
th, td { text-align: left; padding: 9px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--bg-raised); color: #fff; font-weight: 600; }
tr:last-child td { border-bottom: 0; }
td code { white-space: nowrap; }
.chapters { padding-left: 1.6em; }
.chapters li { margin: 0.35em 0; }
.edit { margin-top: 2.5em; font-size: 0.88rem; }
.edit a { color: var(--text-dim); }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 1.4em; }
.pager a { border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 16px; color: #fff; }
.pager a:hover { border-color: var(--accent); text-decoration: none; }
.pager small { display: block; color: var(--text-dim); font-size: 0.78rem; }
.pager-next { text-align: right; }

.toc { font-size: 0.86rem; }
.toc > * { position: sticky; }
.toc-title { position: sticky; top: calc(var(--header-h) + 20px); color: #fff; font-weight: 600; margin: 0 0 8px; }
.toc ul { position: sticky; top: calc(var(--header-h) + 52px); list-style: none; margin: 0; padding: 0; max-height: calc(100vh - 140px); overflow-y: auto; }
.toc li a { display: block; padding: 3px 0; color: var(--text-dim); line-height: 1.4; }
.toc li a:hover, .toc li a.active { color: var(--accent); text-decoration: none; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--text-dim); font-size: 0.88rem; }
.site-footer p { margin: 0.3em 0; }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .docs { grid-template-columns: 230px minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 860px) {
  .hero-grid, .install-grid { grid-template-columns: minmax(0, 1fr); }
  .features { grid-template-columns: 1fr 1fr; }
  .docs { grid-template-columns: minmax(0, 1fr); gap: 12px; padding-top: 16px; }
  .sidebar-toggle {
    display: block; width: 100%; text-align: left; font: inherit; font-weight: 600; color: var(--text);
    background: var(--bg-raised); border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; cursor: pointer;
  }
  .sidebar-toggle::after { content: " ▾"; color: var(--text-dim); }
  .sidebar-inner { display: none; position: static; max-height: none; padding: 14px 0 0; }
  .sidebar.open .sidebar-inner { display: block; }
  .site-header .version { display: none; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .header-inner { gap: 8px; }
  .wordmark img { width: 24px; height: 24px; }
  .site-header nav a { padding: 6px 6px; font-size: 0.85rem; }
  .site-header nav li:nth-child(3) { display: none; } /* "AI skills" — still linked from the docs */
  .hero { padding: 44px 0 40px; }
  .features, .new-list, .pager { grid-template-columns: minmax(0, 1fr); }
  .doc h1 { font-size: 1.7rem; }
  pre { font-size: 0.8rem; padding: 14px; }
}
@media (max-width: 420px) {
  .site-header nav li:nth-child(2) { display: none; } /* "Playground" — a button on every page */
}