/* Mostline — design system extracted from the dc.html mockups.
   Tokens first, then components. No build step, no JS runtime required. */

:root {
  /* brand + accent */
  --accent: #C0492A;
  --accent-soft: #E6A07F;

  /* ink / text */
  --ink: #16181C;
  --ink-2: #62656E;
  --ink-3: #7E828C;
  --ink-4: #9CA0AB;
  --ink-muted: #8A8E98;

  /* dark surfaces */
  --dark: #14161A;
  --darker: #0E1014;
  --dark-line: #2A2E36;
  --on-dark: #A6AAB4;
  --on-dark-3: #7E828C;
  --on-dark-4: #5E626C;

  /* light surfaces + lines */
  --canvas: #F4F5F7;
  --line: #E7E9EE;
  --line-2: #EEF0F3;
  --line-3: #DCDEE4;
  --track: #EAECEF;
  --white: #fff;

  /* status */
  --ok: #2E7D46;
  --ok-bg: #E6F2EA;
  --ok-dot: #7FBF8F;

  /* type */
  --serif: 'Source Serif 4', Georgia, serif;
  --sans: 'Manrope', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

  /* layout */
  --container: 1180px;
  --pad-x: 40px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.bg-canvas { background: var(--canvas); }

::selection { background: var(--accent); color: #fff; }

a { text-decoration: none; color: inherit; }

h1, h2, h3, h4, p { margin: 0; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

.serif { font-family: var(--serif); }
.mono  { font-family: var(--mono); }

.eyebrow {
  font: 700 12px/1 var(--sans);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 11px;
  font-family: var(--sans);
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, transform .05s ease;
}
.btn:active { transform: translateY(1px); }

.btn-primary { background: var(--accent); color: #fff; font-weight: 700; }
.btn-primary:hover { background: #a93e22; }

.btn-ghost { color: var(--ink); border: 1px solid var(--line-3); font-weight: 600; }
.btn-ghost:hover { border-color: #c7cad2; }

.btn-lg { height: 56px; padding: 0 30px; font-size: 16px; }
.btn-lg.btn-ghost { padding: 0 24px; }

.btn-sm { padding: 13px 20px; font-size: 14px; border-radius: 9px; }

/* ---------- header (marketing) ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-2);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  padding-bottom: 18px;
}
.site-header__left { display: flex; align-items: center; gap: 32px; }
.logo { font: 700 22px/1 var(--serif); }
.site-nav { display: flex; align-items: center; gap: 6px; }
.site-nav a { font: 600 14px/1 var(--sans); color: var(--ink-2); padding: 9px 12px; border-radius: 7px; }
.site-nav a:hover { color: var(--ink); }
.site-nav a.is-active { font-weight: 700; color: var(--ink); }
.site-header__right { display: flex; align-items: center; gap: 10px; }
.site-header__right .link { font: 600 14px/1 var(--sans); color: var(--ink); padding: 11px 14px; }

/* ---------- hero ---------- */
.hero { padding-top: 72px; padding-bottom: 72px; }
.hero__grid {
  display: grid;
  grid-template-columns: 1.35fr .8fr;
  gap: 48px;
  align-items: center;
}
.hero h1 {
  font: 600 76px/.95 var(--serif);
  letter-spacing: -.02em;
  margin: 18px 0 22px;
}
.hero__lead { font: 400 21px/1.5 var(--sans); color: var(--ink-2); max-width: 520px; margin-bottom: 32px; }
.hero__actions { display: flex; align-items: center; gap: 14px; }

.code-card {
  background: var(--dark);
  border-radius: 16px;
  padding: 26px;
  box-shadow: 0 24px 50px rgba(20, 22, 26, .28);
}
.code-card__eyebrow { font: 700 11px/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--accent-soft); margin-bottom: 4px; }
.code-card h3 { font: 600 23px/1.1 var(--serif); color: #fff; margin-bottom: 20px; }
.code-card__label { font: 600 12px/1 var(--sans); color: var(--ink-3); margin-bottom: 7px; }
.code-box {
  font: 500 13.5px/1.4 var(--mono);
  background: var(--darker);
  border: 1px solid var(--dark-line);
  border-radius: 9px;
  padding: 12px 14px;
  color: var(--accent-soft);
  margin-bottom: 18px;
  overflow-wrap: anywhere;
}
.code-card__docs {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--dark-line);
  font: 700 14px/1 var(--sans);
  color: #fff;
  transition: color .15s ease;
}
.code-card__docs:hover { color: var(--accent-soft); }
.code-card__docs .arrow { color: var(--accent-soft); transition: transform .15s ease; }
.code-card__docs:hover .arrow { transform: translateX(3px); }

/* hero stat strip */
.stat-strip {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--line-2);
}
.stat-strip__num { font: 700 30px/1 var(--serif); }
.stat-strip__label { font: 500 14px/1.3 var(--sans); color: var(--ink-2); margin-top: 6px; }

/* ---------- section heads ---------- */
.section { padding-top: 64px; padding-bottom: 64px; }
.section--band { background: var(--canvas); border-top: 1px solid var(--line-2); border-bottom: 1px solid var(--line-2); }
.section__title { font: 600 40px/1.05 var(--serif); letter-spacing: -.01em; margin-top: 8px; }
.section__head-row { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 28px; }
.link-accent { font: 600 15px/1 var(--sans); color: var(--accent); }

/* ---------- steps ---------- */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 32px; }
.step {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.step__num { font: 700 14px/1 var(--mono); color: var(--accent); }
.step h3 { font: 600 19px/1.2 var(--serif); }
.step p { font: 400 15px/1.45 var(--sans); color: var(--ink-2); }
.step code, .code-inline {
  display: block;
  font: 500 12.5px/1.5 var(--mono);
  color: #2A2D33;
  background: var(--canvas);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 11px;
  overflow-wrap: anywhere;
}

/* ---------- model cards ---------- */
.group-head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.group-head h3 { font: 600 24px/1 var(--serif); }
.count-pill { font: 600 12px/1 var(--sans); color: var(--ink-muted); background: var(--canvas); padding: 6px 10px; border-radius: 999px; }

.models-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.models-grid--teaser { grid-template-columns: repeat(3, 1fr); gap: 16px; }

.model-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  height: 100%;
  transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease;
}
.model-card:hover {
  border-color: var(--line-3);
  box-shadow: 0 10px 26px rgba(20, 22, 26, .07);
  transform: translateY(-2px);
}
.model-card h4 { font: 600 18px/1.15 var(--serif); color: var(--ink); margin-bottom: 6px; }
.model-card__for { font: 700 11px/1.3 var(--sans); letter-spacing: .03em; text-transform: uppercase; color: var(--accent); }
.model-card__desc { font: 400 14px/1.5 var(--sans); color: var(--ink-2); flex: 1; }

.meters { display: flex; gap: 14px; padding-top: 12px; border-top: 1px solid var(--line-2); }
.meter { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.meter__label { font: 700 10px/1 var(--sans); letter-spacing: .12em; color: var(--ink-4); }
.meter__track { height: 5px; border-radius: 3px; background: var(--track); }
.meter__fill { height: 100%; border-radius: 3px; background: var(--ink); }

/* slightly larger cards in the landing teaser */
.models-grid--teaser .model-card { gap: 14px; padding: 22px; }
.models-grid--teaser .model-card h4 { font-size: 20px; }
.models-grid--teaser .model-card__desc { font-size: 15px; }
.models-grid--teaser .meters { padding-top: 14px; gap: 16px; }

/* ---------- catalog controls ---------- */
.catalog-head { padding-top: 52px; padding-bottom: 24px; }
.catalog-head h1 { font: 600 56px/1 var(--serif); letter-spacing: -.02em; margin-bottom: 6px; }
.catalog-head__lead { font: 400 19px/1.5 var(--sans); color: var(--ink-2); max-width: 560px; margin-bottom: 28px; }
.search-row { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.search-box {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--canvas);
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 14px 16px;
  font: 500 14px/1 var(--sans);
  color: var(--ink-4);
}
.search-box input { border: 0; background: transparent; outline: none; flex: 1; font: 500 14px/1 var(--sans); color: var(--ink); }
.search-box input::placeholder { color: var(--ink-4); }
.sort-pill { font: 600 14px/1 var(--sans); color: var(--ink); background: var(--canvas); border: 1px solid var(--line); padding: 14px 18px; border-radius: 11px; cursor: pointer; }
.chips { display: flex; flex-wrap: wrap; gap: 9px; }
.chip { font: 600 13px/1 var(--sans); color: var(--ink-2); background: var(--canvas); padding: 10px 15px; border-radius: 999px; border: 0; cursor: pointer; }
.chip.is-active { font-weight: 700; color: #fff; background: var(--ink); }

.catalog-body { padding-top: 12px; padding-bottom: 72px; display: flex; flex-direction: column; gap: 40px; }

/* landing teaser: stack of category previews, generously spaced */
.teaser-groups { display: flex; flex-direction: column; gap: 56px; }

/* ---------- dark CTA ---------- */
.cta { background: var(--dark); }
.cta__inner { padding-top: 80px; padding-bottom: 80px; text-align: center; }
.cta h2 { font: 600 48px/1.02 var(--serif); color: #fff; max-width: 640px; margin: 0 auto 16px; letter-spacing: -.01em; }
.cta__lead { font: 400 19px/1.5 var(--sans); color: var(--on-dark); max-width: 520px; margin: 0 auto 32px; }

/* ---------- footer ---------- */
.site-footer { background: var(--darker); }
.site-footer__inner { display: flex; align-items: center; justify-content: space-between; padding-top: 32px; padding-bottom: 32px; }
.site-footer .logo { font-size: 18px; color: #fff; }
.site-footer__links { display: flex; gap: 24px; font: 500 14px/1 var(--sans); color: var(--on-dark-3); }
.site-footer__links a:hover { color: #fff; }
.site-footer__addr { font: 500 13px/1 var(--mono); color: var(--on-dark-4); }

/* ---------- dashboard ---------- */
.dash { display: flex; min-height: 100vh; }
.sidebar {
  width: 248px;
  flex-shrink: 0;
  background: var(--dark);
  padding: 26px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.sidebar .logo { color: #fff; font-size: 21px; padding: 6px 12px 22px; }
.sidebar a { display: flex; align-items: center; gap: 11px; font: 500 14px/1 var(--sans); color: var(--on-dark); padding: 12px 14px; border-radius: 9px; }
.sidebar a:hover { color: #fff; background: rgba(255,255,255,.05); }
.sidebar a.is-active { font-weight: 600; color: #fff; background: var(--accent); }
.sidebar__user { margin-top: auto; display: flex; align-items: center; gap: 11px; padding: 14px 12px 4px; border-top: 1px solid var(--dark-line); }
.avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--accent); display: flex; align-items: center; justify-content: center; font: 700 14px/1 var(--sans); color: #fff; }
.sidebar__user-name { font: 600 13px/1.1 var(--sans); color: #fff; }
.sidebar__user-sub { font: 500 11px/1 var(--sans); color: var(--ink-3); margin-top: 3px; }

.dash-main { flex: 1; padding: 32px 40px; max-width: var(--container); }
.dash-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 26px; }
.dash-head h1 { font: 600 32px/1 var(--serif); margin-bottom: 4px; }
.dash-head__sub { font: 500 14px/1 var(--sans); color: var(--ink-2); }

.stat-row { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.stat { border-radius: 16px; padding: 24px; }
.stat--dark { background: var(--dark); color: #fff; }
.stat--light { background: #fff; border: 1px solid var(--line); }
.stat__label { font: 600 12px/1 var(--sans); letter-spacing: .04em; text-transform: uppercase; margin-bottom: 14px; }
.stat--dark .stat__label { color: var(--ink-3); }
.stat--light .stat__label { color: var(--ink-4); }
.stat__big { font: 700 42px/1 var(--mono); }
.stat__big span { font-size: 20px; color: var(--accent-soft); }
.stat__num { font: 700 34px/1 var(--mono); color: var(--ink); }
.stat__note { margin-top: 14px; font: 500 13px/1 var(--sans); display: flex; align-items: center; gap: 8px; }
.stat--dark .stat__note { color: var(--on-dark); }
.stat__dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok-dot); }
.stat__delta-up { color: var(--accent); }
.stat__note--muted { color: var(--ink-2); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px 26px;
}
.card__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.card h2 { font: 600 18px/1 var(--serif); }

.seg { display: flex; gap: 8px; font: 600 12px/1 var(--sans); }
.seg span { padding: 7px 12px; border-radius: 7px; cursor: pointer; }
.seg .is-active { color: #fff; background: var(--ink); }
.seg .is-idle { color: var(--ink-2); background: var(--canvas); }

.chart { display: flex; align-items: flex-end; gap: 6px; height: 140px; }
.bar { flex: 1; background: var(--line); border-radius: 4px 4px 0 0; }
.bar--hi { background: var(--accent); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-2);
}
.row:last-child { border-bottom: 0; }
.row__name { font: 600 14px/1.2 var(--sans); }
.row__key { font: 500 12px/1 var(--mono); color: var(--ink-4); margin-top: 4px; }
.row__model { font: 500 13px/1.2 var(--mono); color: var(--ink); }
.row__meta { display: flex; gap: 14px; font: 500 12px/1 var(--mono); color: var(--ink-4); }
.tag { font: 600 11px/1 var(--sans); padding: 6px 9px; border-radius: 999px; }
.tag--ok { color: var(--ok); background: var(--ok-bg); }
.tag--off { color: var(--ink-4); background: var(--canvas); }
.muted-accent { color: var(--accent); }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  :root { --pad-x: 24px; }
  .hero__grid { grid-template-columns: 1fr; gap: 32px; }
  .hero h1 { font-size: 54px; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .models-grid { grid-template-columns: repeat(2, 1fr); }
  .models-grid--teaser { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .cta h2 { font-size: 36px; }
  .section__title { font-size: 32px; }
  .catalog-head h1 { font-size: 40px; }
}

@media (max-width: 720px) {
  .dash { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: static; flex-direction: row; flex-wrap: wrap; gap: 4px; }
  .sidebar__user { margin-top: 0; border-top: 0; }
  .site-nav { display: none; }
  .models-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .stat-strip { flex-wrap: wrap; gap: 24px; }
  .site-footer__inner { flex-direction: column; gap: 16px; text-align: center; }
}