/* ==========================================================================
   Trackmint Docs — design system
   Premium, restrained: near-black/navy + white, one bold accent (gold).
   Typography as hero, generous whitespace, functional motion only.
   ========================================================================== */

:root {
  /* Brand */
  --navy: #0b1220;
  --navy-soft: #14213d;
  --ink: #0b1220;
  --ink-2: #3a4256;
  --ink-3: #6b7280;
  --paper: #ffffff;
  --paper-2: #f7f8fb;
  --paper-3: #eef0f5;
  --border: #e4e7ee;
  --accent: #2a78d6;
  --accent-soft: #eaf2fd;
  --gold: #fca311;
  --gold-soft: #fff4e2;
  --good: #1a8a5f;
  --good-soft: #e8f7f0;
  --bad: #d1453d;
  --bad-soft: #fdecea;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 2px rgba(11, 18, 32, 0.06), 0 1px 1px rgba(11, 18, 32, 0.04);
  --shadow-md: 0 8px 24px rgba(11, 18, 32, 0.08), 0 2px 6px rgba(11, 18, 32, 0.04);
  --shadow-lg: 0 24px 64px rgba(11, 18, 32, 0.14), 0 4px 12px rgba(11, 18, 32, 0.06);

  --sidebar-w: 280px;
  --toc-w: 240px;
  --header-h: 64px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;

  color-scheme: light;
}

html.dark {
  --navy: #f3f5f9;
  --ink: #eef1f7;
  --ink-2: #c3c9d6;
  --ink-3: #8891a3;
  --paper: #0b1220;
  --paper-2: #101a2e;
  --paper-3: #16233d;
  --border: #26314a;
  --accent: #6fa8e8;
  --accent-soft: #142845;
  --gold: #ffb92e;
  --gold-soft: #2b2110;
  --good: #33c98e;
  --good-soft: #0f2a20;
  --bad: #ef6a63;
  --bad-soft: #34181a;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.55);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
  line-height: 1.6;
  transition: background 0.2s ease, color 0.2s ease;
}

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

img, svg { max-width: 100%; }

::selection { background: var(--gold-soft); color: var(--ink); }

/* ---------------- Header ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: linear-gradient(155deg, var(--navy-soft), #05070d);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  font-weight: 900;
  font-size: 15px;
  flex-shrink: 0;
}
.brand-sub {
  font-weight: 600;
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.02em;
  padding-left: 8px;
  margin-left: 2px;
  border-left: 1px solid var(--border);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-left: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-2);
}
.header-nav a { color: inherit; }
.header-nav a:hover { color: var(--ink); text-decoration: none; }
.header-nav a.active { color: var(--accent); }

.header-spacer { flex: 1; }

.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--paper-2);
  color: var(--ink-3);
  font-size: 13px;
  width: 220px;
  cursor: pointer;
  transition: border-color 0.15s ease, width 0.2s ease;
}
.header-search:hover { border-color: var(--accent); }
.header-search kbd {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10.5px;
  padding: 2px 5px;
  border-radius: 5px;
  background: var(--paper-3);
  border: 1px solid var(--border);
  color: var(--ink-3);
}

.theme-toggle, .menu-toggle {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--paper);
  color: var(--ink-2);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 15px;
  flex-shrink: 0;
}
.theme-toggle:hover, .menu-toggle:hover { border-color: var(--accent); color: var(--accent); }
.menu-toggle { display: none; }

/* ---------------- Search overlay ---------------- */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(11, 18, 32, 0.5);
  backdrop-filter: blur(2px);
  z-index: 100;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 12vh;
}
.search-overlay.open { display: flex; }
.search-panel {
  width: min(640px, 92vw);
  background: var(--paper);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  overflow: hidden;
}
.search-input-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}
.search-input-row input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 16px;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-sans);
}
.search-results { max-height: 50vh; overflow-y: auto; padding: 8px; }
.search-result {
  display: block;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.search-result:hover, .search-result.sel { background: var(--paper-2); text-decoration: none; }
.search-result .sr-doc { font-size: 11px; font-weight: 700; color: var(--accent); text-transform: uppercase; letter-spacing: 0.04em; }
.search-result .sr-title { font-size: 14.5px; font-weight: 600; color: var(--ink); margin-top: 2px; }
.search-result .sr-snip { font-size: 12.5px; color: var(--ink-3); margin-top: 2px; }
.search-empty { padding: 24px; text-align: center; color: var(--ink-3); font-size: 14px; }

/* ---------------- Layout shell ---------------- */
.shell {
  display: flex;
  max-width: 1440px;
  margin: 0 auto;
}

.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  position: sticky;
  top: var(--header-h);
  height: calc(100vh - var(--header-h));
  overflow-y: auto;
  padding: 28px 18px 60px;
  border-right: 1px solid var(--border);
}
.sidebar-group { margin-bottom: 22px; }
.sidebar-group-label {
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  padding: 0 10px 8px;
}
.sidebar-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink-2);
  line-height: 1.35;
}
.sidebar-link:hover { background: var(--paper-2); text-decoration: none; color: var(--ink); }
.sidebar-link.active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
}
.sidebar-link .doc-num {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-3);
  min-width: 18px;
}
.sidebar-link.active .doc-num { color: var(--accent); }
.sidebar-badge {
  margin-left: auto;
  font-size: 9.5px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 1px 6px;
  border-radius: 999px;
  background: var(--gold-soft);
  color: #8a5300;
  flex-shrink: 0;
}
html.dark .sidebar-badge { color: var(--gold); }

.main {
  flex: 1;
  min-width: 0;
  padding: 48px 56px 100px;
}
.main-narrow { max-width: 800px; }

.toc {
  width: var(--toc-w);
  flex-shrink: 0;
  position: sticky;
  top: var(--header-h);
  height: calc(100vh - var(--header-h));
  overflow-y: auto;
  padding: 48px 24px 60px 0;
}
.toc-label {
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  margin-bottom: 10px;
}
.toc-link {
  display: block;
  padding: 5px 0 5px 14px;
  border-left: 2px solid var(--border);
  font-size: 13px;
  color: var(--ink-3);
  line-height: 1.4;
}
.toc-link.lvl3 { padding-left: 26px; font-size: 12.5px; }
.toc-link:hover { color: var(--ink); text-decoration: none; }
.toc-link.active { color: var(--accent); border-left-color: var(--accent); font-weight: 600; }

/* ---------------- Doc content typography ---------------- */
.doc-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}
.doc-eyebrow .sep { color: var(--border); }
.doc-eyebrow .plain { color: var(--ink-3); text-transform: none; letter-spacing: 0; font-weight: 500; }

.doc-content h1 {
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0 0 14px;
  color: var(--ink);
}
.doc-content > p.doc-dek {
  font-size: 18px;
  color: var(--ink-2);
  margin: 0 0 40px;
  line-height: 1.55;
  max-width: 68ch;
}
.doc-content h2 {
  font-size: 24px;
  font-weight: 750;
  letter-spacing: -0.01em;
  margin: 52px 0 16px;
  padding-top: 4px;
  border-top: 1px solid var(--border);
  padding-top: 28px;
  color: var(--ink);
  scroll-margin-top: 84px;
}
.doc-content h2:first-of-type { border-top: none; padding-top: 0; margin-top: 8px; }
.doc-content h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 30px 0 12px;
  color: var(--ink);
  scroll-margin-top: 84px;
}
.doc-content p { margin: 0 0 16px; color: var(--ink-2); font-size: 15.5px; }
.doc-content strong { color: var(--ink); font-weight: 700; }
.doc-content ul, .doc-content ol { margin: 0 0 18px; padding-left: 22px; color: var(--ink-2); font-size: 15.5px; }
.doc-content li { margin-bottom: 7px; line-height: 1.55; }
.doc-content li > ul, .doc-content li > ol { margin-top: 7px; }
.doc-content hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }
.doc-content code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--paper-3);
  padding: 2px 6px;
  border-radius: 5px;
  color: var(--ink);
}
.doc-content pre {
  background: var(--navy);
  color: #e8ecf5;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
  margin: 0 0 20px;
}
html.dark .doc-content pre { background: #05080f; }
.doc-content pre code { background: none; padding: 0; color: inherit; }
.doc-content blockquote {
  margin: 0 0 20px;
  padding: 4px 20px;
  border-left: 3px solid var(--gold);
  color: var(--ink-2);
  font-style: italic;
  background: var(--paper-2);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.doc-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 28px;
  font-size: 13.5px;
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
}
.doc-content th {
  background: var(--navy-soft);
  color: #fff;
  text-align: left;
  padding: 10px 14px;
  font-weight: 700;
  font-size: 12.5px;
}
html.dark .doc-content th { background: #050a14; }
.doc-content td {
  padding: 9px 14px;
  border-top: 1px solid var(--border);
  vertical-align: top;
  color: var(--ink-2);
}
.doc-content tr:nth-child(even) td { background: var(--paper-2); }

.doc-content a { text-underline-offset: 2px; }

.doc-footer-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 64px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.pnav-btn {
  flex: 1;
  max-width: 320px;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.pnav-btn:hover { border-color: var(--accent); text-decoration: none; transform: translateY(-1px); }
.pnav-btn.next { text-align: right; margin-left: auto; }
.pnav-label { font-size: 11px; font-weight: 700; color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.04em; }
.pnav-title { font-size: 14.5px; font-weight: 700; color: var(--ink); margin-top: 3px; }

.doc-content-embed .doc-dek { max-width: none; }
.embed-frame-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: #fff;
}
.embed-frame {
  width: 100%;
  height: 3600px;
  border: none;
  display: block;
}

/* ---------------- Callout / status badges used inline ---------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.badge-live { background: var(--good-soft); color: var(--good); }
.badge-roadmap { background: var(--gold-soft); color: #8a5300; }
html.dark .badge-roadmap { color: var(--gold); }

/* ---------------- Landing page ---------------- */
.hero {
  position: relative;
  padding: 108px 24px 90px;
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(60% 55% at 50% -10%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 70%),
    var(--paper);
  border-bottom: 1px solid var(--border);
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--ink-2);
  background: var(--paper-2);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 28px;
}
.hero-eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--gold); }
.hero h1 {
  font-size: clamp(38px, 6vw, 64px);
  font-weight: 850;
  letter-spacing: -0.03em;
  line-height: 1.06;
  margin: 0 auto 24px;
  max-width: 900px;
  color: var(--ink);
}
.hero h1 .accent-word { color: var(--accent); }
.hero-sub {
  font-size: 19px;
  color: var(--ink-2);
  max-width: 620px;
  margin: 0 auto 40px;
  line-height: 1.55;
}
.hero-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 56px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 14.5px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--navy-soft); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { box-shadow: var(--shadow-md); background: #0b1530; }
html.dark .btn-primary { background: var(--gold); color: #1a1200; }
html.dark .btn-primary:hover { background: #ffc65c; }
.btn-ghost { background: var(--paper); color: var(--ink); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat b { display: block; font-size: 28px; font-weight: 800; color: var(--ink); letter-spacing: -0.01em; }
.hero-stat span { font-size: 12.5px; color: var(--ink-3); font-weight: 600; }

.section { max-width: 1140px; margin: 0 auto; padding: 88px 24px; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 52px; }
.section-eyebrow { font-size: 12px; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent); margin-bottom: 12px; }
.section-head h2 { font-size: clamp(26px, 3.2vw, 36px); font-weight: 800; letter-spacing: -0.02em; margin: 0 0 14px; color: var(--ink); }
.section-head p { font-size: 16.5px; color: var(--ink-2); line-height: 1.6; }

.cat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.cat-card {
  display: block;
  padding: 26px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--paper);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.cat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); text-decoration: none; }
.cat-icon {
  width: 42px; height: 42px;
  border-radius: 11px;
  background: var(--navy-soft);
  color: var(--gold);
  display: flex; align-items: center; justify-content: center;
  font-size: 19px; margin-bottom: 18px;
}
html.dark .cat-icon { background: var(--gold-soft); color: var(--gold); }
.cat-card h3 { font-size: 16.5px; font-weight: 750; color: var(--ink); margin: 0 0 8px; }
.cat-card p { font-size: 13.5px; color: var(--ink-3); line-height: 1.55; margin: 0 0 14px; }
.cat-card .cat-count { font-size: 12px; font-weight: 700; color: var(--accent); }

.doclist-section { background: var(--paper-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.doclist { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 14px; }
.doc-row {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.doc-row:hover { border-color: var(--accent); text-decoration: none; }
.doc-row .doc-row-num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  color: var(--ink-3);
  background: var(--paper-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 7px;
  flex-shrink: 0;
}
.doc-row-title { font-size: 14px; font-weight: 700; color: var(--ink); margin-bottom: 3px; }
.doc-row-desc { font-size: 12.5px; color: var(--ink-3); line-height: 1.5; }

.site-footer {
  text-align: center;
  padding: 48px 24px 60px;
  color: var(--ink-3);
  font-size: 13px;
  border-top: 1px solid var(--border);
}
.site-footer a { color: var(--ink-3); text-decoration: underline; }

/* ---------------- Mobile ---------------- */
@media (max-width: 1180px) {
  .toc { display: none; }
}
@media (max-width: 900px) {
  .header-search { display: none; }
  .header-nav { display: none; }
  .menu-toggle { display: flex; }
  .sidebar {
    position: fixed;
    left: 0;
    top: var(--header-h);
    height: calc(100vh - var(--header-h));
    width: 84vw;
    max-width: 320px;
    background: var(--paper);
    transform: translateX(-100%);
    transition: transform 0.22s ease;
    z-index: 60;
    box-shadow: var(--shadow-lg);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-scrim {
    display: none;
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: rgba(11, 18, 32, 0.4);
    z-index: 50;
  }
  .sidebar-scrim.open { display: block; }
  .main { padding: 32px 20px 80px; }
  .hero { padding: 72px 20px 60px; }
  .hero-stats { gap: 28px; }
  .section { padding: 60px 20px; }
}