/* docs.tides.cx - same token set as tides.cx, the dashboard, music and appeals.
   dense, hairline ruled, small radius, low glow. */

:root {
  --d0: #05080e;
  --d1: #070a10;
  --d2: #0a0f18;
  --d3: #0d1220;
  --d4: #111826;

  --surface:        rgba(255, 255, 255, 0.026);
  --surface-strong: rgba(255, 255, 255, 0.045);
  --hover:          rgba(255, 255, 255, 0.07);

  --line:        rgba(255, 255, 255, 0.06);
  --line-bright: rgba(255, 255, 255, 0.1);

  --text:  #e4edf7;
  --text2: rgba(228, 237, 247, 0.62);
  --text3: rgba(228, 237, 247, 0.38);

  --teal:     #00faff;
  --teal-2:   #bcfbff;
  --teal-dim: rgba(0, 250, 255, 0.1);
  --blue:     #0079e4;

  --r:    6px;
  --r-md: 10px;
  --r-lg: 14px;

  --ease: cubic-bezier(.16, 1, .3, 1);
  --fast: .16s;
  --norm: .28s;

  --topbar-h: 58px;
  --sidebar-w: 260px;
  --toc-w: 220px;
  --content-max: 1400px;

  --font: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { scrollbar-color: var(--line-bright) transparent; scroll-behavior: smooth; }
html { scroll-padding-top: calc(var(--topbar-h) + 20px); }

body {
  margin: 0;
  background: var(--d1);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--line-bright); border-radius: 6px; border: 2px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-thumb:hover { background: var(--text3); background-clip: content-box; }

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

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--d4);
  padding: 10px 16px;
  z-index: 200;
  border-radius: 0 0 var(--r) 0;
}
.skip:focus { left: 0; }

/* ── topbar ─────────────────────────────────────────────────────────────── */

.topbar {
  position: sticky;
  top: 0;
  z-index: 60;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 max(20px, calc((100vw - var(--content-max)) / 2));
  background: rgba(5, 8, 14, 0.82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.02em;
  flex: 0 0 auto;
}
.brand:hover { text-decoration: none; }
.brand em { font-style: normal; color: var(--text3); font-weight: 500; }

.menu-btn {
  display: none;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--r);
  color: var(--text2);
  cursor: pointer;
}
.menu-btn svg { width: 18px; height: 18px; }

.topbar-links { margin-left: auto; display: flex; gap: 18px; font-size: 13.5px; }
.topbar-links a { color: var(--text2); }
.topbar-links a:hover { color: var(--text); text-decoration: none; }

/* ── search ─────────────────────────────────────────────────────────────── */

.search {
  position: relative;
  flex: 1 1 auto;
  max-width: 440px;
  display: flex;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding: 0 10px;
  background: var(--d0);
  border: 1px solid var(--line);
  border-radius: var(--r);
  transition: border-color var(--fast) var(--ease);
}
.search:focus-within { border-color: rgba(0, 250, 255, 0.35); }
.search > svg { width: 15px; height: 15px; color: var(--text3); flex: 0 0 auto; }

.search input {
  flex: 1;
  min-width: 0;
  background: none;
  border: 0;
  outline: none;
  color: var(--text);
  font-family: inherit;
  font-size: 13.5px;
}
.search input::placeholder { color: var(--text3); }
.search input::-webkit-search-cancel-button { display: none; }

.search kbd {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 6px;
}

.results {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  max-height: min(66vh, 520px);
  overflow-y: auto;
  background: var(--d2);
  border: 1px solid var(--line-bright);
  border-radius: var(--r-md);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.65);
  padding: 6px;
}

.result {
  display: block;
  padding: 9px 11px;
  border-radius: var(--r);
  color: var(--text2);
}
.result:hover, .result.on { background: var(--surface-strong); text-decoration: none; }
.result b { display: block; color: var(--text); font-weight: 600; font-size: 13.5px; }
.result small { display: block; color: var(--text3); font-size: 11.5px; margin-bottom: 2px; }
.result span { font-size: 12.5px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.result mark { background: var(--teal-dim); color: var(--teal-2); border-radius: 3px; padding: 0 1px; }
.results .empty { padding: 14px 12px; color: var(--text3); font-size: 13px; }

/* ── layout ─────────────────────────────────────────────────────────────── */

.shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr) var(--toc-w);
  gap: 42px;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 20px;
}

.sidebar {
  position: sticky;
  top: var(--topbar-h);
  align-self: start;
  max-height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 28px 0 60px;
  min-height: 0;
}

.nav-group + .nav-group { margin-top: 22px; }

.nav-group-label {
  font-size: 11px;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--text3);
  padding: 0 10px 7px;
}

.nav-link {
  display: block;
  padding: 6px 10px;
  border-radius: var(--r);
  color: var(--text2);
  font-size: 13.5px;
  border-left: 2px solid transparent;
}
.nav-link:hover { background: var(--surface); color: var(--text); text-decoration: none; }
.nav-link.active { background: var(--teal-dim); color: var(--teal-2); border-left-color: var(--teal); }

.content { padding: 34px 0 80px; min-width: 0; }

.toc {
  position: sticky;
  top: var(--topbar-h);
  align-self: start;
  max-height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 34px 0 60px;
  min-height: 0;
}

.toc-label {
  font-size: 11px;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--text3);
  padding-bottom: 8px;
}

.toc-link {
  display: block;
  padding: 4px 0 4px 12px;
  border-left: 1px solid var(--line);
  color: var(--text3);
  font-size: 12.5px;
  line-height: 1.45;
}
.toc-link:hover { color: var(--text2); text-decoration: none; }
.toc-link.on { color: var(--teal-2); border-left-color: var(--teal); }
.toc-h3 { padding-left: 24px; }

/* ── prose ──────────────────────────────────────────────────────────────── */

.prose { max-width: 780px; }

.prose h1 {
  font-size: 34px;
  line-height: 1.2;
  letter-spacing: -0.025em;
  margin: 0 0 10px;
  font-weight: 700;
}

.prose h2 {
  font-size: 21px;
  letter-spacing: -0.02em;
  margin: 46px 0 12px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-weight: 650;
}

.prose h3 {
  font-size: 16.5px;
  letter-spacing: -0.01em;
  margin: 30px 0 8px;
  font-weight: 650;
}

.prose h2 .anchor, .prose h3 .anchor {
  float: left;
  margin-left: -22px;
  width: 22px;
  color: var(--text3);
  opacity: 0;
  font-weight: 400;
  transition: opacity var(--fast) var(--ease);
}
.prose h2:hover .anchor, .prose h3:hover .anchor { opacity: 1; }
.prose .anchor:hover { text-decoration: none; color: var(--teal); }

.prose p { margin: 0 0 14px; color: var(--text2); }
.prose strong { color: var(--text); font-weight: 600; }

.prose ul, .prose ol { margin: 0 0 16px; padding-left: 22px; color: var(--text2); }
.prose li { margin: 5px 0; }
.prose li::marker { color: var(--text3); }

.prose code {
  font-family: var(--mono);
  font-size: 0.875em;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--teal-2);
}

.prose pre {
  background: var(--d0);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 14px 16px;
  overflow-x: auto;
  margin: 0 0 18px;
}
.prose pre code { background: none; border: 0; padding: 0; color: var(--text2); font-size: 13px; }

.prose hr { border: 0; border-top: 1px solid var(--line); margin: 34px 0; }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  margin: 0 0 20px;
}

.prose table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
.prose th {
  text-align: left;
  padding: 9px 14px;
  color: var(--text3);
  font-weight: 600;
  font-size: 11.5px;
  letter-spacing: .06em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  white-space: nowrap;
}
.prose td { padding: 9px 14px; border-bottom: 1px solid var(--line); color: var(--text2); vertical-align: top; }
.prose tbody tr:last-child td { border-bottom: 0; }
.prose td code { white-space: nowrap; }

.prose figure { margin: 0 0 22px; }
.prose figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}
.prose figcaption { margin-top: 8px; font-size: 12.5px; color: var(--text3); }

.callout {
  margin: 0 0 18px;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--text3);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: var(--surface);
}
.callout p { margin: 0; }
.callout p + p { margin-top: 8px; }
.callout-note    { border-left-color: var(--blue); }
.callout-tip     { border-left-color: var(--teal); }
.callout-warning { border-left-color: #faa61a; }
.callout-danger  { border-left-color: #ed4245; }

.prose blockquote:not(.callout) {
  margin: 0 0 18px;
  padding-left: 16px;
  border-left: 2px solid var(--line-bright);
  color: var(--text3);
}

/* ── pager ──────────────────────────────────────────────────────────────── */

.pager {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  max-width: 780px;
  margin-top: 54px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.pager-link {
  display: block;
  flex: 0 1 auto;
  max-width: 46%;
  padding: 11px 15px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--surface);
  transition: border-color var(--fast) var(--ease), background var(--fast) var(--ease);
}
.pager-link:hover { background: var(--surface-strong); border-color: var(--line-bright); text-decoration: none; }
.pager-link span { display: block; font-size: 11px; letter-spacing: .07em; text-transform: uppercase; color: var(--text3); }
.pager-link strong { display: block; color: var(--text); font-size: 14px; font-weight: 600; }
.pager-next { text-align: right; margin-left: auto; }

/* ── responsive ─────────────────────────────────────────────────────────── */

.nav-scrim { display: none; }

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

@media (max-width: 860px) {
  .shell { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .menu-btn { display: inline-flex; }
  .topbar-links { display: none; }

  .sidebar {
    position: fixed;
    inset: var(--topbar-h) auto 0 0;
    width: 82vw;
    max-width: 320px;
    background: var(--d0);
    border-right: 1px solid var(--line);
    padding: 22px 14px 60px;
    transform: translateX(-102%);
    transition: transform var(--norm) var(--ease);
    z-index: 70;
    max-height: none;
  }
  body.nav-open .sidebar { transform: none; }

  body.nav-open .nav-scrim {
    display: block;
    position: fixed;
    inset: var(--topbar-h) 0 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 65;
  }

  .prose h1 { font-size: 27px; }
  .content { padding: 24px 0 60px; }
}

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