/*
  Quantstrip docs — shared stylesheet.
  Design tokens mirror the marketing site (quantstrip.com) exactly.
  Dark theme only, no build step, no framework.
*/

:root {
  --bg:            #10141b;
  --fg:            #f2f4f8;
  --card:          #161b24;
  --card-2:        #1a2029;
  --muted-bg:      #131820;
  --border:        #242b36;
  --border-soft:   #1f2530;
  --muted:         #9098a8;
  --text:          #b7c1d1;
  --primary:       #4bb6ec;
  --primary-ink:   #0b1420;
  --radius:        10px;
  --radius-lg:     14px;
  --max:           1120px;
  --font-sans:     "Inter Tight", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono:     "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --sidebar-w: 260px;
  --header-h: 60px;
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scrollbar-width: thin;
  scrollbar-color: var(--border) var(--bg);
}

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 0 0 0.6em;
}
h1 { font-size: 2rem; letter-spacing: -0.02em; }
h2 { font-size: 1.4rem; margin-top: 2.2em; letter-spacing: -0.015em; }
h3 { font-size: 1.1rem; margin-top: 1.8em; letter-spacing: -0.01em; }
h4 { font-size: 0.95rem; margin-top: 1.4em; color: var(--fg); }

p { margin: 0 0 1em; color: var(--text); }
p.lead { color: var(--muted); font-size: 1.05rem; }

code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--muted-bg);
  border: 1px solid var(--border-soft);
  border-radius: 5px;
  padding: 0.1em 0.4em;
}

pre {
  margin: 0 0 1.4em;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow-x: auto;
  background: #0d1117;
}
pre code {
  display: block;
  padding: 16px 18px;
  background: none;
  border: none;
  border-radius: 0;
  font-size: 0.85rem;
  line-height: 1.55;
  white-space: pre;
}

ul, ol { padding-left: 1.3em; color: var(--text); }
li { margin-bottom: 0.4em; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.6em;
  font-size: 0.9rem;
}
th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-soft);
  vertical-align: top;
}
td { color: var(--text); }
th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
tbody tr:hover { background: var(--card-2); }

hr { border: none; border-top: 1px solid var(--border-soft); margin: 2.4em 0; }

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

.docs-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */

.docs-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  background: rgba(16, 20, 27, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-soft);
}

.docs-header .brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--fg);
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.docs-header .brand:hover { text-decoration: none; opacity: 0.85; }
.docs-header .brand .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 10px 2px rgba(75, 182, 236, 0.55);
}
.docs-header .brand .tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 6px;
  margin-left: 2px;
}

.docs-header .hamburger {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 36px; height: 36px;
  align-items: center;
  justify-content: center;
  color: var(--fg);
  cursor: pointer;
  flex-shrink: 0;
}
.docs-header .hamburger svg { width: 18px; height: 18px; }

.docs-header .search-wrap {
  position: relative;
  flex: 1;
  max-width: 340px;
  margin-left: auto;
}
.docs-header .search-input {
  width: 100%;
  background: var(--muted-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  padding: 8px 12px 8px 32px;
}
.docs-header .search-input:focus {
  outline: none;
  border-color: var(--primary);
}
.docs-header .search-wrap svg.icon {
  position: absolute;
  left: 10px; top: 50%;
  transform: translateY(-50%);
  width: 14px; height: 14px;
  color: var(--muted);
  pointer-events: none;
}
.docs-header .search-results {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0; right: 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-height: 360px;
  overflow-y: auto;
  z-index: 50;
  box-shadow: 0 12px 32px rgba(0,0,0,0.45);
}
.docs-header .search-results.open { display: block; }
.docs-header .search-results a {
  display: block;
  padding: 9px 12px;
  border-bottom: 1px solid var(--border-soft);
  color: var(--fg);
  font-size: 0.85rem;
}
.docs-header .search-results a:last-child { border-bottom: none; }
.docs-header .search-results a:hover { background: var(--card-2); text-decoration: none; }
.docs-header .search-results .r-section {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--primary);
  margin-bottom: 2px;
}
.docs-header .search-results .r-empty {
  padding: 12px; color: var(--muted); font-size: 0.85rem;
}

.docs-header .dashboard-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--fg);
  background: var(--card-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 12px;
  white-space: nowrap;
}
.docs-header .dashboard-link:hover { text-decoration: none; border-color: var(--primary); }

/* Body: sidebar + main */

.docs-body {
  flex: 1;
  display: flex;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
}

.docs-sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  padding: 28px 18px 40px;
  border-right: 1px solid var(--border-soft);
  align-self: flex-start;
  position: sticky;
  top: var(--header-h);
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) var(--bg);
}

.docs-sidebar .group { margin-bottom: 24px; }
.docs-sidebar .group + .group {
  border-top: 1px solid var(--border-soft);
  padding-top: 20px;
}
.docs-sidebar .group-title {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--fg);
  padding: 0 10px;
  margin-bottom: 10px;
}
.docs-sidebar ul { list-style: none; margin: 0; padding: 0; }
.docs-sidebar li { margin: 0; }
.docs-sidebar a {
  display: block;
  padding: 6px 10px;
  border-radius: 7px;
  color: var(--muted);
  font-size: 0.88rem;
  text-decoration: none;
}
.docs-sidebar a:hover { background: var(--card-2); color: var(--fg); }
.docs-sidebar a.active {
  background: var(--card-2);
  color: var(--primary);
  font-weight: 600;
}

.docs-main {
  flex: 1;
  min-width: 0;
  padding: 36px 40px 80px;
}

.breadcrumb {
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { opacity: 0.5; }
.breadcrumb .current { color: var(--fg); }

.page-header { margin-bottom: 2em; }
.page-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

/* Callouts */

.callout {
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  background: var(--card);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin: 1.4em 0;
  font-size: 0.9rem;
  color: var(--text);
}
.callout.warn { border-left-color: #e67e22; }
.callout strong { color: var(--fg); }

/* Cards (used on hub pages) */

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 1.6em 0;
}
.card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  color: var(--fg);
  text-decoration: none;
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover {
  border-color: var(--primary);
  text-decoration: none;
  transform: translateY(-2px);
}
.card .card-icon {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: var(--muted-bg);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary);
  margin-bottom: 14px;
}
.card .card-icon svg { width: 18px; height: 18px; }
.card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.88rem; }

/* Small link-cards used in mini indexes on section pages */
.mini-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 1.2em 0;
}
.mini-links a {
  display: block;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  color: var(--fg);
  font-size: 0.88rem;
  font-weight: 600;
}
.mini-links a:hover { border-color: var(--primary); background: var(--card); text-decoration: none; }
.mini-links a span {
  display: block;
  font-weight: 400;
  color: var(--muted);
  font-size: 0.8rem;
  margin-top: 3px;
}

/* Hero (docs homepage only) */

.docs-hero {
  position: relative;
  overflow: hidden;
  padding: 30px 0 10px;
}
.docs-hero::before {
  content: "";
  position: absolute;
  top: -60px; left: 50%;
  width: 520px; height: 260px;
  transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(75,182,236,0.20), transparent);
  pointer-events: none;
  z-index: -1;
}
.docs-hero .kicker {
  font-family: var(--font-mono);
  color: var(--primary);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.docs-hero h1 { font-size: 2.3rem; max-width: 620px; }
.docs-hero p.lead { max-width: 560px; font-size: 1.05rem; }

/* Badges / pills */

.pill {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  background: var(--muted-bg);
}
.pill.status-live { color: #4bd98a; border-color: rgba(75, 217, 138, 0.35); background: rgba(75, 217, 138, 0.08); }
.pill.status-only { color: #e67e22; border-color: rgba(230, 126, 34, 0.35); background: rgba(230, 126, 34, 0.08); }

/* Method / API entries */

.api-entry {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  padding: 16px 18px;
  margin: 0 0 14px;
}
.api-entry .sig {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--fg);
  margin-bottom: 8px;
}
.api-entry .sig .fn { color: var(--primary); }
.api-entry p { margin-bottom: 0.6em; font-size: 0.9rem; }
.api-entry p:last-child { margin-bottom: 0; }
.api-entry .returns {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 8px;
}
.api-entry .returns code { margin-right: 2px; }

/* Screenshots — self-upgrading placeholder. Shows a dashed placeholder box
   until a correctly-named file exists at assets/screenshots/, at which
   point the onerror handler never fires and the real image just renders. */

figure.screenshot {
  margin: 1.6em 0;
  padding: 0;
}
figure.screenshot img {
  display: block;
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}
figure.screenshot .screenshot-fallback {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  aspect-ratio: 16 / 9.5;
  width: 100%;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  background: var(--muted-bg);
  color: var(--muted);
  text-align: center;
  padding: 24px;
}
figure.screenshot.missing img { display: none; }
figure.screenshot.missing .screenshot-fallback { display: flex; }
figure.screenshot .screenshot-fallback svg { width: 30px; height: 30px; opacity: 0.6; }
figure.screenshot .screenshot-fallback .path {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--fg);
  background: var(--card-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 8px;
}
figure.screenshot .screenshot-fallback .hint { font-size: 0.78rem; max-width: 320px; }
figure.screenshot figcaption {
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
}

/* Footer */

.docs-footer {
  border-top: 1px solid var(--border-soft);
  padding: 22px 40px;
  color: var(--muted);
  font-size: 0.82rem;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.docs-footer a { color: var(--muted); }
.docs-footer a:hover { color: var(--primary); }

/* 404 */
.notfound {
  text-align: center;
  padding: 80px 20px;
}
.notfound .code {
  font-family: var(--font-mono);
  font-size: 4rem;
  color: var(--primary);
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

/* Mobile */

.sidebar-overlay { display: none; }

@media (max-width: 880px) {
  .docs-header .hamburger { display: inline-flex; }
  .docs-header .search-wrap { display: none; }
  .docs-header .dashboard-link span.txt { display: none; }

  .docs-sidebar {
    position: fixed;
    top: var(--header-h);
    left: 0;
    height: calc(100vh - var(--header-h));
    width: 280px;
    max-width: 82vw;
    background: var(--bg);
    border-right: 1px solid var(--border);
    transform: translateX(-100%);
    transition: transform .2s ease;
    z-index: 45;
  }
  .docs-sidebar.open { transform: translateX(0); }

  .sidebar-overlay.open {
    display: block;
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: rgba(0,0,0,0.5);
    z-index: 44;
  }

  .docs-main { padding: 26px 20px 60px; }
  .card-grid, .mini-links { grid-template-columns: 1fr; }
  .docs-hero h1 { font-size: 1.7rem; }
  .docs-footer { padding: 18px 20px; }
}