/* BenchWeave SDK public site — tokens and components per the public-site
   styleguide v0.2 (main repo docs/internal/public-site-styleguide.html). The
   :root / dark blocks are copied from the styleguide verbatim (its "Instructions
   for AI"); the mark is the dashed-hexagon SDK sub-brand with the filled SDK
   pill. Theme follows the OS unless data-theme is set by the toggle. Plain CSS. */

  :root {
    --bg: #EEF1F0;
    --bg-elevated: #FFFFFF;
    --bg-inset: #E3E7E5;
    --text: #1B2027;
    --text-muted: #565F68;
    --border: #D6DBD9;
    --border-strong: #B7BEBB;
    --amber: #C6790A;      /* text/icon-safe shade of Trace Amber on light bg */
    --amber-solid: #FFB020; /* raw brand amber for fills */
    --amber-on: #1B2027;
    --blue: #3355E0;
    --blue-solid: #4C6FFF;
    --green: #1F8F5F;
    --green-solid: #3FB27F;
    --red: #C82F35;
    --red-solid: #E5484D;
    --grid-line: rgba(27,32,39,0.06);
    --shadow: 0 1px 2px rgba(27,32,39,0.08);
    --radius-sm: 3px;
    --radius-md: 6px;
    --font-display: 'Space Grotesk', 'Segoe UI', system-ui, sans-serif;
    --font-body: 'IBM Plex Sans', 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;
  }
  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --bg: #1B2027;
      --bg-elevated: #232A33;
      --bg-inset: #161B21;
      --text: #ECEFEE;
      --text-muted: #A7B0B8;
      --border: #333C46;
      --border-strong: #46505C;
      --amber: #FFB020;
      --amber-on: #1B2027;
      --blue: #8AA0FF;
      --green: #3FD394;
      --red: #FF6B70;
      --grid-line: rgba(236,239,238,0.06);
      --shadow: 0 1px 2px rgba(0,0,0,0.4);
    }
  }
  :root[data-theme="dark"] {
    --bg: #1B2027;
    --bg-elevated: #232A33;
    --bg-inset: #161B21;
    --text: #ECEFEE;
    --text-muted: #A7B0B8;
    --border: #333C46;
    --border-strong: #46505C;
    --amber: #FFB020;
    --amber-on: #1B2027;
    --blue: #8AA0FF;
    --green: #3FD394;
    --red: #FF6B70;
    --grid-line: rgba(236,239,238,0.06);
    --shadow: 0 1px 2px rgba(0,0,0,0.4);
  }

  /* Logo strand: the one stroke in the mark that swaps per theme (styleguide "Logo — copy exactly"). */
  .wordmark .strand { stroke: #4C6FFF; }
  @media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .wordmark .strand { stroke: #8AA0FF; } }
  :root[data-theme="dark"] .wordmark .strand { stroke: #8AA0FF; }
  * { box-sizing: border-box; }
  html, body { margin: 0; }
  html { scroll-behavior: smooth; }
  body {
    background: var(--bg); color: var(--text);
    font-family: var(--font-body); font-size: 16px; line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }
  a { color: var(--blue); text-decoration: none; }
  a:hover { text-decoration: underline; }
  code, .mono { font-family: var(--font-mono); }
  p code, li code, td code, h3 code { font-size: 0.92em; background: var(--bg-inset); border: 1px solid var(--border); border-radius: 3px; padding: 0 4px; }
  :focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
  @media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } html { scroll-behavior: auto; } }

  /* ---- top nav ---- */
  header.top {
    position: sticky; top: 0; z-index: 20;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 24px; height: 58px;
    background: var(--bg-elevated); border-bottom: 1px solid var(--border);
  }
  .wordmark { display: flex; align-items: center; gap: 9px; font-family: var(--font-display); font-weight: 600; font-size: 17px; color: var(--text); }
  .wordmark:hover { text-decoration: none; }
  .wordmark svg { display: block; flex-shrink: 0; }
  .wordmark-sub { font-family: var(--font-mono); font-weight: 600; font-size: 11px; line-height: 1; color: #1B2027; background: #FFB020; border-radius: 999px; padding: 3px 7px; margin-left: 1px; }
  nav.panels { display: flex; gap: 4px; }
  nav.panels button {
    font-family: var(--font-body); font-size: 14px; font-weight: 500;
    background: transparent; border: none; color: var(--text-muted);
    padding: 8px 14px; border-radius: 5px; cursor: pointer;
  }
  nav.panels button:hover { color: var(--text); }
  nav.panels button.active { color: var(--text); background: var(--bg-inset); }
  .top-right { display: flex; align-items: center; gap: 10px; }
  .icon-btn {
    display: flex; align-items: center; justify-content: center;
    width: 32px; height: 32px; border-radius: 5px; border: 1px solid var(--border);
    background: transparent; color: var(--text-muted); cursor: pointer; font-size: 14px;
  }
  .icon-btn:hover { color: var(--text); border-color: var(--border-strong); text-decoration: none; }
  .star-btn {
    display: flex; align-items: center; gap: 7px;
    height: 32px; padding: 0 12px; border-radius: 5px;
    border: 1px solid var(--border); background: transparent;
    font-family: var(--font-mono); font-size: 12.5px; font-weight: 500;
    color: var(--text-muted); white-space: nowrap;
  }
  .star-btn:hover { color: var(--text); border-color: var(--border-strong); text-decoration: none; }
  .star-btn .star { color: var(--amber); font-size: 14px; line-height: 1; }
  .star-btn .count { padding: 1px 7px; border-radius: 9px; background: var(--bg-inset); border: 1px solid var(--border); font-size: 11.5px; line-height: 1.4; }

  main { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
  .panel { display: none; }
  .panel.active { display: block; }

  /* ---- shared headings ---- */
  h2 { font-family: var(--font-display); font-size: 24px; margin: 0 0 8px; }
  p.lede { color: var(--text-muted); max-width: 62ch; margin: 0 0 28px; }
  .h2-sub { font-size: 18px; margin: 40px 0 10px; }
  p.note { color: var(--text-muted); font-size: 13.5px; max-width: 62ch; margin: 10px 0 64px; }

  /* ---- home / hero ---- */
  .hero {
    display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center;
    padding: 72px 0 56px;
    position: relative; z-index: 0; overflow: hidden;
  }
  .hero::before {
    content: ""; position: absolute; inset: -1px -24px auto -24px; height: 480px;
    background-image: linear-gradient(var(--grid-line) 1px, transparent 1px), linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 28px 28px; z-index: -1; mask-image: linear-gradient(to bottom, black, transparent);
  }
  .hero-bg-scopes { position: absolute; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; perspective: 900px; }

  .scope-panel {
    position: absolute; width: 230px; height: 150px;
    border: 1.5px solid var(--text-muted); border-radius: 8px;
    background: var(--bg-elevated); padding: 12px; box-sizing: border-box;
    opacity: 0.2;
  }
  .scope-panel .scope-screen {
    width: 100%; height: 62%;
    border: 1px solid var(--text-muted); border-radius: 3px;
    background: var(--bg-inset); overflow: hidden;
  }
  .scope-panel .scope-screen svg { width: 100%; height: 100%; display: block; }
  .scope-trace {
    fill: none; stroke: var(--amber); stroke-width: 2;
    filter: drop-shadow(0 0 4px var(--amber)) drop-shadow(0 0 10px var(--amber));
  }
  .scope-trace.blue {
    stroke: var(--blue);
    filter: drop-shadow(0 0 4px var(--blue)) drop-shadow(0 0 10px var(--blue));
  }
  .scope-knobs { display: flex; gap: 8px; margin-top: 8px; }
  .scope-knobs span { width: 11px; height: 11px; border-radius: 50%; border: 1.4px solid var(--text-muted); display: block; }

  .scope-panel--a { top: -8%; left: 36%; transform: rotateY(-27deg) rotateX(7deg) rotate(-3deg); }
  .ambient-trace { position: absolute; opacity: 0.18; }
  .ambient-trace svg { display: block; width: 100%; height: 100%; }
  .ambient-trace--b { bottom: 10%; left: 26%; width: 230px; height: 74px; transform: rotateX(-18deg) rotate(6deg); }

  .hero-badges { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 22px; }
  .status-line { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: 12.5px; color: var(--text-muted); border: 1px solid var(--border); padding: 5px 10px; border-radius: 999px; background: var(--bg); }
  .status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--amber-solid); }
  .hero h1 { font-family: var(--font-display); font-size: 40px; line-height: 1.12; font-weight: 700; margin: 0 0 18px; letter-spacing: -0.01em; }
  .hero p.sub { color: var(--text-muted); font-size: 16.5px; max-width: 50ch; margin: 0 0 30px; }
  .cta-row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
  .btn { font-family: var(--font-body); font-weight: 600; font-size: 14.5px; padding: 11px 20px; border-radius: 5px; border: 1px solid transparent; cursor: pointer; display: inline-block; }
  .btn:hover { text-decoration: none; }
  .btn-primary { background: var(--amber-solid); color: var(--amber-on); }
  .btn-ghost { background: transparent; color: var(--blue); padding: 11px 14px; }
  .btn-secondary { background: transparent; border-color: var(--border-strong); color: var(--text); }

  /* ---- hero figure: the one bespoke element on the home page ---- */
  .schematic { width: 100%; height: auto; display: block; }
  .schematic-wrap { display: flex; flex-direction: column; gap: 8px; }
  .fig-caption { font-family: var(--font-mono); font-size: 11px; color: var(--text-muted); text-align: right; padding-right: 4px; }
  .schematic .stream { stroke-dasharray: 5 9; animation: stream-flow 1.1s linear infinite; }
  .schematic .stream--2 { animation-duration: 1.35s; }
  .schematic .stream--3 { animation-duration: 0.95s; }
  .schematic .conveyor { stroke-dasharray: 3 9; animation: conveyor-flow 1.6s linear infinite; }
  @keyframes stream-flow { to { stroke-dashoffset: -14; } }
  @keyframes conveyor-flow { to { stroke-dashoffset: -12; } }

  /* ---- install ---- */
  .install { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 40px; padding: 8px 0 56px; border-bottom: 1px solid var(--border); scroll-margin-top: 80px; }
  .install-head p { color: var(--text-muted); font-size: 14.5px; max-width: 42ch; margin: 0; }
  .install-card { border: 1px solid var(--border); border-radius: 8px; padding: 22px 24px; background: var(--bg-elevated); }
  .install-tabs { display: flex; gap: 6px; margin-bottom: 10px; }
  .install-tabs button { font-family: var(--font-mono); font-size: 12px; padding: 6px 12px; border-radius: 5px 5px 0 0; background: var(--bg-inset); border: 1px solid var(--border); border-bottom: none; color: var(--text-muted); cursor: pointer; }
  .install-tabs button.active { color: var(--amber); }
  .code-block { background: var(--bg-inset); border: 1px solid var(--border); border-radius: 6px; padding: 14px 16px; font-family: var(--font-mono); font-size: 13px; margin: 0 0 12px; overflow-x: auto; line-height: 1.7; }
  .code-block .muted { color: var(--text-muted); }
  .code-block--muted { margin-top: 16px; margin-bottom: 0; }
  .code-block--wide { max-width: 760px; }

  /* ---- five steps ---- */
  .steps-section { padding: 48px 0 40px; }
  .step-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; max-width: 760px; }
  .step-list li { display: grid; grid-template-columns: 32px 1fr; gap: 16px; align-items: start; }
  .step-n { width: 30px; height: 30px; border-radius: 50%; border: 1.5px solid var(--amber); color: var(--amber); font-family: var(--font-mono); font-size: 13px; font-weight: 600; display: flex; align-items: center; justify-content: center; margin-top: 1px; }
  .step-list strong { font-family: var(--font-display); font-weight: 600; font-size: 15.5px; display: block; margin-bottom: 2px; }
  .step-list p { margin: 0; color: var(--text-muted); font-size: 14px; max-width: 62ch; }

  /* ---- public surfaces ---- */
  .surfaces { padding: 32px 0 8px; border-top: 1px solid var(--border); }
  .spec-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px,1fr)); gap: 14px; padding-bottom: 40px; }
  .spec-card { border: 1px solid var(--border); border-radius: 6px; padding: 18px 20px; background: var(--bg-elevated); }
  .spec-head { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 8px; gap: 10px; }
  .spec-head h4 { font-family: var(--font-mono); font-weight: 600; font-size: 15px; margin: 0; }
  .badge { display: inline-flex; align-items: center; font-family: var(--font-mono); font-size: 11.5px; padding: 3px 9px; border-radius: 999px; border: 1px solid var(--border-strong); white-space: nowrap; }
  .badge-version { color: var(--text); background: var(--bg-inset); }
  .badge-success { color: var(--green); border-color: var(--green); background: transparent; }
  .badge-warning { color: var(--amber); border-color: var(--amber); background: transparent; }
  .badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 18px; }
  .spec-card p { font-size: 13.5px; color: var(--text-muted); margin: 0 0 12px; }
  .spec-card p:last-child { margin-bottom: 0; }
  .spec-card .spec-link { font-family: var(--font-mono); font-size: 12.5px; }

  /* ---- limits callout ---- */
  .limits-callout { border: 1px solid var(--border); border-left: 3px solid var(--amber); border-radius: 6px; padding: 26px 28px; margin: 8px 0 64px; display: flex; justify-content: space-between; align-items: center; gap: 28px; background: var(--bg-elevated); }
  .limits-callout h2 { font-size: 18px; margin: 0 0 8px; }
  .limits-callout p { color: var(--text-muted); font-size: 14px; margin: 0; max-width: 64ch; }
  .limits-callout .btn { flex-shrink: 0; }

  /* ---- page heads (docs, cli, gateway) ---- */
  .page-head { padding: 48px 0 28px; }
  .page-head h1 { font-family: var(--font-display); font-size: 30px; margin: 0 0 10px; }
  .page-head p { color: var(--text-muted); max-width: 62ch; margin: 0; }
  .title-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 6px; max-width: 62ch; }
  .version-select { font-family: var(--font-mono); font-size: 12px; background: var(--bg-inset); border: 1px solid var(--border); color: var(--text); padding: 5px 9px; border-radius: 5px; }

  /* ---- docs landing ---- */
  .docs-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px 24px; padding-bottom: 72px; }
  .sb-title { font-family: var(--font-mono); font-size: 11.5px; color: var(--text-muted); margin-bottom: 10px; }
  .doc-card { display: block; border: 1px solid var(--border); border-radius: 6px; padding: 16px 18px; background: var(--bg-elevated); color: var(--text); margin-bottom: 10px; }
  .doc-card:hover { text-decoration: none; border-color: var(--border-strong); }
  .doc-card h3 { font-family: var(--font-display); font-size: 15.5px; margin: 0 0 4px; }
  .doc-card p { font-size: 13.5px; color: var(--text-muted); margin: 0; }
  .doc-card--primary { border-left: 3px solid var(--amber); }

  /* ---- cli table ---- */
  .cli-table { width: 100%; border-collapse: collapse; font-size: 14px; margin-bottom: 8px; }
  .cli-table th { text-align: left; font-family: var(--font-mono); font-weight: 500; font-size: 11.5px; color: var(--text-muted); padding: 0 12px 10px 0; border-bottom: 1px solid var(--border); }
  .cli-table td { padding: 12px 12px 12px 0; border-bottom: 1px solid var(--border); vertical-align: top; color: var(--text-muted); }
  .cli-table td:first-child { white-space: nowrap; width: 150px; }
  .cli-table td:first-child code { color: var(--text); font-weight: 600; font-size: 13.5px; background: transparent; border: none; padding: 0; }
  .cli-table td:last-child { white-space: nowrap; font-family: var(--font-mono); font-size: 12.5px; text-align: right; }

  /* ---- gateway panel ---- */
  .sdk-wrap { padding: 0 0 80px; max-width: 680px; }
  .sdk-card { border: 1px solid var(--border); border-radius: 8px; padding: 28px 30px; background: var(--bg-elevated); }
  .sdk-card h2 { font-size: 20px; margin: 0 0 8px; }
  .sdk-card p.tagline { color: var(--text-muted); font-size: 14.5px; margin: 0 0 18px; }
  .sdk-links { display: flex; gap: 10px; margin-top: 8px; flex-wrap: wrap; }

  footer.site-footer { border-top: 1px solid var(--border); padding: 24px 0 40px; margin-top: 8px; display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--text-muted); flex-wrap: wrap; gap: 8px; }
  footer.site-footer .mono { font-family: var(--font-mono); }
  footer.site-footer a { color: var(--text-muted); }
  footer.site-footer a:hover { color: var(--text); }

  @media (max-width: 880px) {
    .hero { grid-template-columns: 1fr; padding-top: 48px; }
    .hero h1 { font-size: 32px; }
    .install { grid-template-columns: 1fr; gap: 20px; }
    .limits-callout { flex-direction: column; align-items: flex-start; }
    .docs-grid { grid-template-columns: 1fr; }
    .cli-table td:first-child { width: auto; }
    .cli-table th:last-child, .cli-table td:last-child { display: none; }
    nav.panels { gap: 0; }
    nav.panels button { padding: 8px 9px; font-size: 13px; }
    header.top { padding: 0 16px; }
    main { padding: 0 16px; }
  }
  @media (max-width: 700px) {
    /* Twin of the main site's 560px header wrap, pulled up to 700px here: this
       header is tighter (longer wordmark + PyPI link beside the star CTA) and
       the single row overflows well before 560px is reached. */
    header.top { flex-wrap: wrap; height: auto; min-height: 48px; padding: 6px 16px; }
    nav.panels { order: 3; flex: 1 0 100%; justify-content: space-between; }
  }
  @media (max-width: 560px) {
    .wordmark { font-size: 15px; gap: 6px; }
    .wordmark-sub { display: none; }
    .top-right .icon-btn[href] { display: none; } /* PyPI repeats in the footer */
    /* Star CTA compacts to glyph + count; the repo link stays in the footer */
    .star-btn { padding: 0 8px; gap: 5px; }
    .star-btn .label { display: none; }
    nav.panels button { padding: 8px 7px; font-size: 12.5px; }
    .hero-badges .status-line { font-size: 11.5px; }
  }