/* ============================================================
   ARIS Docs — design inspired by Hürriyet Docs (Dribbble)
   Two-level sidebar + Cmd+K quick search + spacious typography
   ============================================================ */
:root {
  --bg: #f6f5f1;
  --bg-elev: #ffffff;
  --bg-rail: #efece4;
  --bg-soft: #f1eee6;
  --line: #e6e1d4;
  --line-strong: #d8d2c1;
  --ink: #1a1a18;
  --ink-mute: #5a5a55;
  --ink-faint: #8b8a82;
  --accent: #1a1a18;
  --accent-on: #ffffff;
  --pink: #fbe7ea;
  --pink-ink: #c2526a;
  --green: #e7f0e1;
  --green-ink: #3f7a35;
  --blue: #e4ecf5;
  --blue-ink: #3a5d8a;
  --yellow: #f6efd6;
  --yellow-ink: #8a6f1a;
  --rail-w: 64px;
  --side-w: 268px;
  --kbd-bg: #ebe7da;
  --font-display: 'PP Editorial New', 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Inter', -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', SFMono-Regular, Menlo, monospace;
  --r-card: 14px;
  --r-pill: 999px;
  --shadow-card: 0 1px 0 rgba(20,20,18,.04), 0 14px 40px -22px rgba(20,20,18,.18);
}

[data-theme="dark"] {
  --bg: #15141f;
  --bg-elev: #1c1b27;
  --bg-rail: #131221;
  --bg-soft: #1a1925;
  --line: #2a2837;
  --line-strong: #353347;
  --ink: #f1eee6;
  --ink-mute: #a7a4b8;
  --ink-faint: #6a6781;
  --accent: #f1eee6;
  --accent-on: #15141f;
  --kbd-bg: #2a2837;
  --shadow-card: 0 1px 0 rgba(0,0,0,.4), 0 18px 50px -22px rgba(0,0,0,.6);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }

/* ============================================================ Layout */
.app { display: grid; grid-template-columns: var(--rail-w) var(--side-w) 1fr; min-height: 100vh; }

/* ------------ Rail (узкий стрип слева) ------------- */
.rail {
  background: var(--bg-rail);
  border-right: 1px solid var(--line);
  padding: 18px 0;
  display: flex; flex-direction: column; align-items: center;
  position: sticky; top: 0; height: 100vh; z-index: 5;
}
.rail__logo {
  width: 38px; height: 38px; border-radius: 11px;
  background: var(--accent); color: var(--accent-on);
  display: grid; place-items: center; font-weight: 800; font-size: 18px;
  font-family: var(--font-display); letter-spacing: -.02em;
  margin-bottom: 22px;
}
.rail__nav { display: flex; flex-direction: column; gap: 6px; width: 100%; align-items: center; }
.rail__item {
  width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center; color: var(--ink-mute);
  cursor: pointer; transition: background .15s, color .15s;
  position: relative;
}
.rail__item:hover { background: var(--bg-soft); color: var(--ink); }
.rail__item.active { background: var(--accent); color: var(--accent-on); }
.rail__item svg { width: 20px; height: 20px; }
.rail__item[data-tip]:hover::after {
  content: attr(data-tip); position: absolute; left: calc(100% + 10px); top: 50%; transform: translateY(-50%);
  background: var(--accent); color: var(--accent-on); padding: 5px 10px; border-radius: 8px;
  font-size: 12px; white-space: nowrap; z-index: 10;
}
.rail__bottom { margin-top: auto; display: flex; flex-direction: column; gap: 6px; align-items: center; }

/* ------------ Side (двухуровневая навигация) ------------- */
.side {
  background: var(--bg);
  border-right: 1px solid var(--line);
  padding: 20px 0 40px;
  position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
.side__head { padding: 0 22px 14px; border-bottom: 1px solid var(--line); margin-bottom: 12px; }
.side__title { font-family: var(--font-display); font-size: 22px; font-weight: 500; letter-spacing: -.01em; line-height: 1.1; }
.side__subtitle { color: var(--ink-faint); font-size: 12.5px; margin-top: 4px; letter-spacing: .02em; }

.side__search {
  margin: 6px 16px 18px; padding: 9px 12px;
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: 11px;
  display: flex; align-items: center; gap: 9px; cursor: pointer;
  transition: border-color .15s, background .15s;
}
.side__search:hover { border-color: var(--line-strong); }
.side__search svg { width: 15px; height: 15px; color: var(--ink-faint); flex-shrink: 0; }
.side__search span { color: var(--ink-faint); font-size: 13px; flex: 1; }
.kbd {
  font-family: var(--font-mono); font-size: 11px; padding: 2px 6px;
  background: var(--kbd-bg); border-radius: 5px; color: var(--ink-mute);
  line-height: 1.3;
}

.side__section { margin-bottom: 22px; }
.side__h { padding: 0 22px 6px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .12em; color: var(--ink-faint); }
.side__link {
  display: block; padding: 6.5px 22px; font-size: 13.5px; color: var(--ink-mute);
  border-left: 2px solid transparent; transition: background .12s, color .12s, border-color .12s;
}
.side__link:hover { color: var(--ink); background: var(--bg-soft); }
.side__link.active { color: var(--ink); background: var(--bg-soft); border-left-color: var(--accent); font-weight: 500; }
.side__sub { padding-left: 38px; font-size: 13px; color: var(--ink-faint); display: block; padding-top: 4px; padding-bottom: 4px; }
.side__sub:hover { color: var(--ink); }

/* ------------ Main content ------------- */
.main { padding: 56px 72px 120px; max-width: 920px; }
/* ============================================================ Landing hero */
.hero { padding: 8px 0 8px; margin: -10px 0 30px; }
.hero__t {
  font-family: var(--font-display); font-weight: 400; letter-spacing: -.02em;
  font-size: 72px; line-height: 1.02; margin: 0 0 14px;
}
.hero__s { font-size: 19px; color: var(--ink-mute); line-height: 1.5; max-width: 640px; margin: 0 0 26px; }
.hero__cta { display: flex; gap: 10px; flex-wrap: wrap; }
.hero__btn {
  border: 1px solid var(--line-strong); background: var(--bg-elev); color: var(--ink);
  padding: 11px 18px 11px 14px; border-radius: 12px; font-family: var(--font-sans); font-size: 14px;
  display: inline-flex; align-items: center; gap: 9px; cursor: pointer;
  box-shadow: var(--shadow-card); transition: transform .12s, border-color .12s;
}
.hero__btn:hover { transform: translateY(-1px); border-color: var(--ink-mute); }
.hero__btn-k { font-family: var(--font-mono); background: var(--kbd-bg); padding: 2px 7px; border-radius: 6px; font-size: 12px; color: var(--ink-mute); }
.hero__btn.alt {
  background: linear-gradient(135deg, rgba(251,231,234,1), rgba(228,236,245,1));
  border-color: transparent; color: var(--ink);
}
[data-theme="dark"] .hero__btn.alt {
  background: linear-gradient(135deg, rgba(194,82,106,.2), rgba(58,93,138,.2));
}

@media (max-width: 720px) { .hero__t { font-size: 48px; } .hero__s { font-size: 17px; } }

/* version selector в sidebar */
.side__ver { padding: 6px 22px 12px; display: flex; align-items: center; gap: 8px; }
.side__ver select {
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-mute);
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: 7px;
  padding: 4px 9px; cursor: pointer;
}
.side__ver-h { font-size: 11px; text-transform: uppercase; letter-spacing: .12em; color: var(--ink-faint); font-weight: 600; }

/* language switcher (rail bottom) */
.lang-pill {
  display: flex; gap: 3px; padding: 3px; background: var(--bg-elev);
  border-radius: 9px; border: 1px solid var(--line);
}
.lang-pill button {
  border: 0; background: transparent; color: var(--ink-faint);
  font-size: 11px; padding: 4px 8px; cursor: pointer; font-family: var(--font-mono);
  border-radius: 6px; font-weight: 600;
}
.lang-pill button.active { background: var(--accent); color: var(--accent-on); }

.crumbs { color: var(--ink-faint); font-size: 12.5px; margin-bottom: 22px; letter-spacing: .04em; }
.crumbs span { margin: 0 8px; opacity: .5; }

.h1 {
  font-family: var(--font-display);
  font-size: 56px; font-weight: 400; letter-spacing: -.02em; line-height: 1.05;
  margin: 0 0 14px;
}
.h1 em { font-style: italic; color: var(--ink-mute); }
.lead { color: var(--ink-mute); font-size: 18px; line-height: 1.55; max-width: 680px; margin: 0 0 40px; }

.h2 { font-family: var(--font-display); font-size: 32px; font-weight: 500; letter-spacing: -.01em; margin: 50px 0 16px; line-height: 1.15; }
.h3 { font-size: 17px; font-weight: 600; margin: 32px 0 10px; letter-spacing: -.005em; }

.main p { margin: 0 0 16px; color: var(--ink); }
.main ul, .main ol { padding-left: 22px; margin: 0 0 18px; }
.main li { margin-bottom: 8px; }

.main code:not(pre code) {
  font-family: var(--font-mono); font-size: 13px; padding: 2px 6px;
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 6px;
}
pre {
  background: var(--ink); color: #f1eee6;
  border-radius: var(--r-card); padding: 18px 20px;
  font-family: var(--font-mono); font-size: 13px; line-height: 1.6;
  overflow-x: auto; margin: 18px 0 22px;
  box-shadow: var(--shadow-card);
}
pre code { color: inherit; background: transparent; padding: 0; }

/* Tabs над codeblock'ом */
.tabs { display: flex; gap: 4px; margin: 18px 0 -8px; padding-bottom: 2px; }
.tab {
  padding: 7px 14px; font-size: 12.5px; color: var(--ink-faint); cursor: pointer;
  background: var(--bg-soft); border: 1px solid var(--line); border-bottom: none;
  border-radius: 9px 9px 0 0; font-family: var(--font-mono);
}
.tab.active { background: var(--ink); color: #f1eee6; border-color: var(--ink); }
.tabs + pre { margin-top: 0; border-top-left-radius: 0; }

.card {
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--r-card);
  padding: 22px 24px; margin: 16px 0; box-shadow: var(--shadow-card);
}
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin: 26px 0; }
.cards .card { margin: 0; transition: transform .15s, border-color .15s; }
.cards .card:hover { transform: translateY(-2px); border-color: var(--line-strong); }
.card__t { font-weight: 600; font-size: 14.5px; margin-bottom: 4px; display: flex; align-items: center; gap: 8px; }
.card__t .ico { width: 22px; height: 22px; border-radius: 7px; display: grid; place-items: center; flex-shrink: 0; }
.card__t .ico.pink { background: var(--pink); color: var(--pink-ink); }
.card__t .ico.green { background: var(--green); color: var(--green-ink); }
.card__t .ico.blue { background: var(--blue); color: var(--blue-ink); }
.card__t .ico.yellow { background: var(--yellow); color: var(--yellow-ink); }
.card__d { color: var(--ink-mute); font-size: 13.5px; line-height: 1.5; }

.note { padding: 14px 18px; background: var(--bg-soft); border-left: 3px solid var(--accent); border-radius: 8px; margin: 18px 0; color: var(--ink-mute); font-size: 14px; }
.note.warn { border-left-color: #d49a26; background: var(--yellow); color: var(--yellow-ink); }
.note.ok { border-left-color: var(--green-ink); background: var(--green); color: var(--green-ink); }

.toc { position: fixed; top: 56px; right: 40px; width: 200px; font-size: 12.5px; color: var(--ink-faint); border-left: 1px solid var(--line); padding-left: 18px; }
.toc__h { font-size: 11px; text-transform: uppercase; letter-spacing: .12em; margin-bottom: 10px; font-weight: 600; }
.toc a { display: block; padding: 4px 0; color: var(--ink-faint); transition: color .12s; }
.toc a:hover, .toc a.active { color: var(--ink); }

/* ============================================================ Quick search (Cmd+K) */
.qs-bg {
  position: fixed; inset: 0; background: rgba(20,20,18,.42); backdrop-filter: blur(6px);
  z-index: 100; display: none; align-items: flex-start; justify-content: center; padding-top: 9vh;
}
.qs-bg.open { display: flex; }
[data-theme="dark"] .qs-bg { background: rgba(0,0,0,.65); }

.qs {
  width: min(820px, 92vw); background: var(--bg-elev); border-radius: 18px;
  box-shadow: 0 30px 80px -20px rgba(20,20,18,.5), 0 1px 0 rgba(255,255,255,.05) inset;
  overflow: hidden; display: grid; grid-template-rows: auto 1fr auto;
  max-height: 76vh;
}
.qs__head { padding: 16px 20px; border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 14px; }
.qs__head svg { width: 18px; height: 18px; color: var(--ink-faint); }
.qs__input {
  flex: 1; border: 0; outline: 0; background: transparent;
  font-family: var(--font-display); font-size: 22px; color: var(--ink);
  letter-spacing: -.01em;
}
.qs__input::placeholder { color: var(--ink-faint); }
.qs__close { color: var(--ink-faint); cursor: pointer; padding: 4px 8px; font-size: 12px; border-radius: 6px; }
.qs__close:hover { background: var(--bg-soft); color: var(--ink); }

.qs__body { display: grid; grid-template-columns: 220px 1fr; min-height: 0; }
.qs__cats { border-right: 1px solid var(--line); padding: 14px 8px; overflow-y: auto; background: var(--bg-soft); }
.qs__cat-h { font-size: 10.5px; text-transform: uppercase; letter-spacing: .14em; color: var(--ink-faint); padding: 10px 12px 6px; font-weight: 600; }
.qs__cat { padding: 8px 12px; font-size: 13px; color: var(--ink-mute); cursor: pointer; border-radius: 8px; display: flex; align-items: center; gap: 9px; }
.qs__cat:hover { background: var(--bg-elev); color: var(--ink); }
.qs__cat .dot { width: 6px; height: 6px; border-radius: 3px; background: var(--ink-faint); }
.qs__cat.is-pink .dot { background: var(--pink-ink); }
.qs__cat.is-green .dot { background: var(--green-ink); }
.qs__cat.is-blue .dot { background: var(--blue-ink); }
.qs__cat.is-yellow .dot { background: var(--yellow-ink); }

.qs__results { padding: 8px 0; overflow-y: auto; }
.qs__group-h { font-size: 10.5px; text-transform: uppercase; letter-spacing: .14em; color: var(--ink-faint); padding: 12px 22px 6px; font-weight: 600; }
.qs__hit {
  padding: 10px 22px; cursor: pointer; display: flex; align-items: center; gap: 12px;
  border-left: 2px solid transparent;
}
.qs__hit:hover, .qs__hit.cur { background: var(--bg-soft); border-left-color: var(--accent); }
.qs__hit .t { flex: 1; min-width: 0; }
.qs__hit .t b { font-weight: 600; font-size: 14px; display: block; }
.qs__hit .t small { color: var(--ink-faint); font-size: 12.5px; }
.qs__hit mark { background: transparent; color: var(--ink); font-weight: 700; }
.qs__hit .arrow { color: var(--ink-faint); font-size: 18px; }

.qs__ai {
  padding: 14px 22px; cursor: pointer; display: flex; align-items: center; gap: 12px;
  background: linear-gradient(90deg, rgba(251,231,234,.6), rgba(228,236,245,.6));
  border-bottom: 1px solid var(--line); border-left: 2px solid transparent;
  transition: background .15s;
}
[data-theme="dark"] .qs__ai { background: linear-gradient(90deg, rgba(194,82,106,.12), rgba(58,93,138,.12)); }
.qs__ai:hover { border-left-color: var(--accent); }
.qs__ai .ai-spark { font-size: 18px; color: var(--pink-ink); }
.qs__ai .ai-t { flex: 1; font-size: 13.5px; color: var(--ink-mute); }
.qs__ai .ai-t b { display: block; font-weight: 600; color: var(--ink); margin-top: 2px; font-size: 14px; }
.qs__ai .arrow { color: var(--ink-faint); }

.qs__answer { padding: 18px 22px; border-bottom: 1px solid var(--line); background: var(--bg-soft); }
.qs__answer-h { font-size: 11px; text-transform: uppercase; letter-spacing: .14em; color: var(--ink-faint); margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.qs__answer-h .ai-spark { color: var(--pink-ink); font-size: 14px; }
.qs__answer-h .prov { margin-left: auto; font-family: var(--font-mono); text-transform: none; letter-spacing: 0; font-size: 11px; opacity: .7; }
.qs__answer-body { font-size: 14px; line-height: 1.6; color: var(--ink); }

.qs__foot {
  padding: 11px 20px; border-top: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between;
  color: var(--ink-faint); font-size: 11.5px;
}
.qs__foot .hint { display: flex; gap: 14px; }
.qs__foot .hint span { display: inline-flex; align-items: center; gap: 6px; }

/* ============================================================ Responsive */
@media (max-width: 1100px) {
  .toc { display: none; }
  .main { padding: 48px 48px 100px; }
}
@media (max-width: 860px) {
  .app { grid-template-columns: var(--rail-w) 1fr; }
  .side { display: none; }
  .main { padding: 36px 26px 80px; }
  .h1 { font-size: 40px; }
}