/* Caller's Compendium — landing page styles.
   Dependency-free, responsive, dark-mode aware, accessible. */

:root {
  --bg: #fbfaf7;
  --bg-alt: #f2efe8;
  --surface: #ffffff;
  --ink: #1d1c2b;
  --ink-soft: #4a495c;
  --ink-faint: #6f6e83;
  --line: #e3ded3;
  --brand: #3b4cca;      /* indigo */
  --brand-ink: #2a37a0;
  --accent: #c9603a;     /* warm terracotta */
  --ok-bg: #e4f3e8;
  --ok-ink: #216c3a;
  --work-bg: #fbecd6;
  --work-ink: #8a5a12;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 2px rgba(29,28,43,.06), 0 8px 24px rgba(29,28,43,.06);
  --wrap: 1080px;
  --font: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14131c;
    --bg-alt: #1b1a26;
    --surface: #1f1e2b;
    --ink: #f3f1fb;
    --ink-soft: #c3c1d4;
    --ink-faint: #9997ad;
    --line: #302e3f;
    --brand: #8b97ff;
    --brand-ink: #aab3ff;
    --accent: #e78a63;
    --ok-bg: #17331f;
    --ok-ink: #8fe0a6;
    --work-bg: #3a2c12;
    --work-ink: #f0c580;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 10px 30px rgba(0,0,0,.35);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }

a { color: var(--brand-ink); }
a:hover { color: var(--accent); }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--brand); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0;
  z-index: 100;
}
.skip-link:focus { left: 0; }

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

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.2) blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 62px; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; color: var(--ink); text-decoration: none; font-size: 1.02rem; }
.brand img { display: block; }
.site-nav { display: flex; gap: 20px; flex-wrap: wrap; }
.site-nav a { color: var(--ink-soft); text-decoration: none; font-size: .95rem; font-weight: 500; }
.site-nav a:hover { color: var(--brand-ink); }
@media (max-width: 720px) {
  .site-nav { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 999px;
  font-weight: 600; text-decoration: none; font-size: 1rem;
  transition: transform .12s ease, background .12s ease, box-shadow .12s ease;
  border: 1.5px solid transparent;
}
@media (prefers-reduced-motion: reduce) { .btn { transition: none; } }
.btn-primary { background: var(--brand); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { background: var(--brand-ink); color: #fff; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--brand-ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand-ink); transform: translateY(-1px); }
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 26px; }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(1200px 500px at 15% -10%, color-mix(in srgb, var(--brand) 16%, transparent), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 55%);
  padding: 72px 0 64px;
  border-bottom: 1px solid var(--line);
}
.hero-inner { max-width: 760px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px; margin: 0 0 18px;
  font-weight: 600; color: var(--accent); font-size: .9rem; letter-spacing: .02em;
  text-transform: uppercase;
}
.eyebrow .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 25%, transparent); }
.hero h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); line-height: 1.08; margin: 0 0 18px; letter-spacing: -.02em; }
.lede { font-size: clamp(1.05rem, 2.2vw, 1.25rem); color: var(--ink-soft); margin: 0; max-width: 62ch; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 28px 0 0; color: var(--ink-faint); font-size: .9rem; }
.pill { background: var(--surface); border: 1px solid var(--line); color: var(--brand-ink); padding: 3px 12px; border-radius: 999px; font-weight: 600; }

/* ---------- Section shells ---------- */
section { padding: 64px 0; }
.status { background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.section-title { font-size: clamp(1.5rem, 3vw, 2.1rem); margin: 0 0 14px; letter-spacing: -.01em; }
.section-lede { color: var(--ink-soft); font-size: 1.08rem; margin: 0 0 26px; max-width: 68ch; }
.section-note { color: var(--ink-faint); font-size: .92rem; margin: 22px 0 0; }

/* ---------- Status ---------- */
.status-grid { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.status-grid li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px 16px; display: flex; gap: 12px; align-items: baseline; }
.tag { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .03em; padding: 3px 9px; border-radius: 999px; white-space: nowrap; }
.tag.ok { background: var(--ok-bg); color: var(--ok-ink); }
.tag.work { background: var(--work-bg); color: var(--work-ink); }

/* ---------- Cards / grids ---------- */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.card h3 { margin: 0 0 8px; font-size: 1.15rem; }
.card p { margin: 0; color: var(--ink-soft); }

.feature-grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

/* ---------- Screenshots ---------- */
.shot-grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.shot { margin: 0; }
.shot-frame {
  position: relative; aspect-ratio: 4 / 3; border-radius: var(--radius);
  border: 1px solid var(--line); overflow: hidden; display: flex;
  align-items: center; justify-content: center; box-shadow: var(--shadow);
}
.shot-frame.placeholder {
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--brand) 14%, var(--surface)), color-mix(in srgb, var(--accent) 10%, var(--surface)));
  color: var(--ink-faint);
}
.shot-frame.placeholder::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(color-mix(in srgb, var(--ink) 6%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--ink) 6%, transparent) 1px, transparent 1px);
  background-size: 22px 22px; opacity: .5;
}
.shot-badge { position: absolute; top: 10px; left: 10px; background: var(--surface); border: 1px solid var(--line); color: var(--ink-soft); font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .03em; padding: 3px 9px; border-radius: 999px; z-index: 1; }
.shot-caption-hint { position: relative; z-index: 1; font-weight: 600; }
.shot figcaption { margin-top: 12px; color: var(--ink-soft); font-size: .96rem; }

/* ---------- Downloads ---------- */
.download-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); margin-bottom: 22px; }
.dl-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; display: flex; flex-direction: column; gap: 10px; box-shadow: var(--shadow);
}
.dl-card .dl-os { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.08rem; }
.dl-os-icon { width: 22px; height: 22px; flex: none; color: var(--brand); }
.dl-arch { color: var(--ink-faint); font-size: .85rem; font-weight: 500; }
.dl-meta { color: var(--ink-faint); font-size: .82rem; margin: 0; }
.dl-sha { font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; font-size: .72rem; color: var(--ink-faint); word-break: break-all; background: var(--bg-alt); border-radius: 6px; padding: 6px 8px; margin: 0; }
.dl-card .btn { margin-top: auto; text-align: center; }
.dl-loading, .dl-error { color: var(--ink-faint); }
.dl-error a { font-weight: 600; }
.ios-note { margin-top: 4px; }
.ios-note h3 { margin-top: 0; }

/* ---------- Beta ---------- */
.beta { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.beta-inner { display: grid; gap: 32px; grid-template-columns: 1.3fr 1fr; align-items: start; }
@media (max-width: 820px) { .beta-inner { grid-template-columns: 1fr; } }
.beta-list { color: var(--ink-soft); padding-left: 20px; margin: 0 0 8px; }
.beta-list li { margin-bottom: 8px; }
.beta-card ol { color: var(--ink-soft); padding-left: 20px; margin: 0 0 14px; }
.beta-card ol li { margin-bottom: 6px; }

/* ---------- Guide ---------- */
.guide-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.guide-link { text-decoration: none; color: inherit; transition: transform .12s ease, border-color .12s ease; }
@media (prefers-reduced-motion: reduce) { .guide-link { transition: none; } }
.guide-link:hover { transform: translateY(-2px); border-color: var(--brand); }
.guide-link h3 { color: var(--brand-ink); }

/* ---------- Guide pages (rendered from docs/user by tools/site) ---------- */
/* A two-column reading layout: a sticky guide switcher beside the prose. The
   prose column is capped at a comfortable measure; everything inherits the
   colours, typography and dark-mode handling defined above, so the guides feel
   like part of the site rather than a bolted-on docs tool. */
.guide-layout {
  display: grid;
  gap: 40px;
  grid-template-columns: 232px minmax(0, 1fr);
  align-items: start;
  padding-top: 40px;
  padding-bottom: 56px;
}
@media (max-width: 900px) {
  .guide-layout { grid-template-columns: 1fr; gap: 24px; }
}

.guide-nav {
  position: sticky; top: 82px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface); padding: 12px 18px 14px; box-shadow: var(--shadow);
}
@media (max-width: 900px) { .guide-nav { position: static; } }
/* A <details> disclosure, so a narrow screen can fold the guide list away with
   no JavaScript. It is rendered `open`, so the list is always there for a
   reader with CSS or JS disabled, and for print. */
.guide-nav summary {
  margin: 0; padding: 4px 0; cursor: pointer; list-style: none;
  font-size: .78rem; font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase; color: var(--ink-faint);
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
}
.guide-nav summary::-webkit-details-marker { display: none; }
.guide-nav summary::after {
  content: "▾"; font-size: .9rem; line-height: 1; color: var(--ink-faint);
  transition: transform .12s ease;
}
@media (prefers-reduced-motion: reduce) { .guide-nav summary::after { transition: none; } }
.guide-nav details:not([open]) > summary::after { transform: rotate(-90deg); }
.guide-nav summary:hover { color: var(--brand-ink); }
.guide-nav ul { list-style: none; margin: 8px 0 0; padding: 0; }
.guide-nav li { margin: 0; }
.guide-nav a {
  display: block; padding: 5px 0; font-size: .94rem; line-height: 1.4;
  color: var(--ink-soft); text-decoration: none;
}
.guide-nav a:hover { color: var(--brand-ink); }
.guide-nav a[aria-current="page"] { color: var(--brand-ink); font-weight: 700; }

.guide-breadcrumb {
  margin: 0 0 18px; font-size: .88rem; color: var(--ink-faint);
}
.guide-breadcrumb a { color: var(--ink-faint); text-decoration: none; }
.guide-breadcrumb a:hover { color: var(--brand-ink); }
.guide-breadcrumb span { margin: 0 6px; }

.guide-body { max-width: 72ch; }
.guide-body h1 { font-size: clamp(1.8rem, 4vw, 2.5rem); margin: 0 0 .6rem; letter-spacing: -.02em; }
.guide-body h2 {
  font-size: clamp(1.25rem, 2.6vw, 1.6rem); margin: 2.4rem 0 .6rem;
  padding-top: 1.4rem; border-top: 1px solid var(--line); letter-spacing: -.01em;
}
.guide-body h3 { font-size: 1.1rem; margin: 1.8rem 0 .4rem; }
.guide-body h4 { font-size: 1rem; margin: 1.4rem 0 .4rem; color: var(--ink-soft); }
.guide-body p, .guide-body li { color: var(--ink-soft); line-height: 1.7; }
.guide-body > p:first-of-type { color: var(--ink); font-size: 1.08rem; }
.guide-body ul, .guide-body ol { padding-left: 1.35rem; margin: .8rem 0; }
.guide-body li { margin: .35rem 0; }
.guide-body li > ul, .guide-body li > ol { margin: .35rem 0; }
.guide-body a { text-decoration-thickness: 1px; text-underline-offset: 2px; }
.guide-body hr { border: 0; border-top: 1px solid var(--line); margin: 2.4rem 0; }
.guide-body code {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: .88em; background: var(--bg-alt); border: 1px solid var(--line);
  border-radius: 5px; padding: .1em .35em;
}
.guide-body pre {
  background: var(--bg-alt); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 14px 16px; overflow-x: auto;
}
.guide-body pre code { background: none; border: 0; padding: 0; font-size: .86rem; }
.guide-body blockquote {
  margin: 1.2rem 0; padding: 2px 18px;
  border-left: 4px solid var(--brand); background: var(--bg-alt);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.guide-body blockquote p { margin: .8rem 0; }

/* Guides are text-only: an image renders as its alt text, matching the in-app
   reader (see docs/user/style-guide.md). */
.guide-figure { display: block; color: var(--ink-faint); font-size: .94rem; }

.guide-table-wrap { overflow-x: auto; margin: 1.2rem 0; }
.guide-body table { border-collapse: collapse; width: 100%; font-size: .95rem; }
.guide-body th, .guide-body td {
  border: 1px solid var(--line); padding: 9px 12px; text-align: left;
  vertical-align: top; color: var(--ink-soft);
}
.guide-body th { background: var(--bg-alt); color: var(--ink); font-weight: 700; }

/* ---------- Footer ---------- */
.site-footer { background: var(--surface); border-top: 1px solid var(--line); padding: 40px 0 28px; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; align-items: flex-start; }
.footer-brand { display: flex; gap: 12px; align-items: center; }
.footer-name { margin: 0; font-weight: 700; }
.footer-links { display: flex; flex-wrap: wrap; gap: 16px; }
.footer-links a { color: var(--ink-soft); text-decoration: none; font-size: .92rem; }
.footer-links a:hover { color: var(--brand-ink); }
.footer-fine { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
.tiny { font-size: .84rem; color: var(--ink-faint); margin: 4px 0 0; }