/* ==========================================================================
   UI-Venus-2 project page — base.css
   Design tokens, reset, shared primitives (eyebrow-free zone: TBD chips,
   hidden helper, scroll-reveal, reduced-motion policy).
   ========================================================================== */

/* ==========================================================================
   UI-Venus-2 project page
   Palette derived from the UI-Venus logo: bright frame blue, deep star blue,
   icy cyan interior. Light, modern, blue-family design.
   ========================================================================== */

:root {
  --paper: #f6fafe;
  --ice: #e7f4fd;
  --card: #ffffff;
  --ink: #0c1e3a;
  --muted: #52678a;
  --line: #d7e6f5;
  --venus: #1d6fe0;
  --venus-bright: #3b8bf4;
  --venus-deep: #14509f;
  --sky: #7ec4f8;
  --tbd-ink: #6b7fa0;
  --tbd-bg: #f2f7fc;
  --tbd-line: #a9bfd8;
  --code-bg: #0e2247;
  --code-ink: #dce9fa;

  --font-display: "Bricolage Grotesque", "Instrument Sans", system-ui, sans-serif;
  --font-body: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --radius: 18px;
  --shadow-soft: 0 10px 30px -18px rgba(20, 80, 159, 0.35);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

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

:focus-visible {
  outline: 2px solid var(--venus-bright);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap {
  max-width: 1080px;
  margin-inline: auto;
  padding-inline: 24px;
}


[hidden] { display: none !important; }

/* TBD chip — the page's placeholder language for pending results. */
.tbd {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--tbd-ink);
  background: var(--tbd-bg);
  border: 1px dashed var(--tbd-line);
  border-radius: 6px;
  padding: 2px 9px;
  vertical-align: middle;
}
.stat .value .tbd { font-size: 14px; padding: 6px 12px; }

/* --------------------------------------------------------------------------
   Sections
   -------------------------------------------------------------------------- */

.section { padding: 76px 0 8px; }
.section:last-of-type { padding-bottom: 72px; }

.section-head { max-width: 780px; margin-bottom: 36px; }
.section-head .eyebrow { font-size: 11.5px; }
.section-head .eyebrow::after { content: none; }

.section-head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.8rem, 3.4vw, 2.35rem);
  letter-spacing: -0.015em;
  line-height: 1.15;
  margin: 10px 0 0;
}
.section-head .lede {
  color: var(--muted);
  font-size: 16.5px;
  margin: 14px 0 0;
}

/* --------------------------------------------------------------------------
   Scroll reveal + motion preferences
   -------------------------------------------------------------------------- */

[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-reveal].revealed { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .spark { animation: none; }
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .btn, .card { transition: none; }
  .cap-visual *, .cap-visual *::before, .cap-visual *::after,
  .cap-cell[aria-selected="true"]::after { animation: none !important; }
}