/* Shared stylesheet for the /docs section. Same warm palette + tokens as the
   landing page (landing/index.html) so docs feel like the same product. Pure
   CSS, no JS — the S3 pages are served under a strict CSP (script-src 'self',
   no inline JS); native <details> gives us collapsible FAQ answers with no
   script. Linked as /docs/docs.css (absolute) so every page under /docs
   resolves it identically. */

:root {
  color-scheme: light dark;
  --bg: #fbf8f4;
  --ink: #15130f;
  --muted: #6b6358;
  --line: #e7e0d6;
  --card: #fffefb;
  --accent: #ff5a36;
  --accent-2: #ffae3b;
  --grad: linear-gradient(105deg, var(--accent), var(--accent-2));
  --on-accent: #1a0f08;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #100f0d; --ink: #f3efe8; --muted: #9b9282; --line: #2a2723;
    --card: #1a1815; --accent: #ff6b49; --accent-2: #ffc25e;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(120% 60% at 50% -8%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 55%),
    var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }

/* ---- top nav (identical on the landing page and every docs page) ---- */
.nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 1rem;
  padding: 0.7rem clamp(1rem, 4vw, 2rem);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(8px);
}
.nav .brand {
  display: inline-flex; align-items: center; gap: 0.5ch;
  font-weight: 800; letter-spacing: -0.02em; text-decoration: none; color: var(--ink);
  font-size: 1.02rem;
}
.nav .brand .bdot {
  width: 0.5rem; height: 0.5rem; border-radius: 50%; background: var(--accent);
}
.nav .brand:hover { color: var(--accent); }
.nav .spacer { margin-left: auto; }
.nav .links { display: flex; gap: 0.3rem; align-items: center; flex-wrap: wrap; }
.nav .links a {
  color: var(--muted); text-decoration: none; font-weight: 600; font-size: 0.92rem;
  padding: 0.35rem 0.6rem; border-radius: 0.55rem;
}
.nav .links a:hover { color: var(--ink); background: color-mix(in srgb, var(--accent) 9%, transparent); }
.nav .btn { padding: 0.55rem 1rem; font-size: 0.95rem; border-radius: 0.7rem; }
/* Phones: brand + "Open the app" only. On docs pages the section-pill strip below
   still provides full navigation, so the top-nav Docs/FAQ links can drop away. */
@media (max-width: 560px) { .nav .links { display: none; } }

/* ---- docs section nav (a content strip under the shared top nav, only on docs
   article pages — lets you jump between sibling sections) ---- */
.docnav { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0 0 1.6rem; }
.docnav a {
  font-size: 0.9rem; font-weight: 600; text-decoration: none; color: var(--muted);
  padding: 0.4rem 0.78rem; border: 1px solid var(--line); border-radius: 0.6rem;
  background: var(--card);
}
.docnav a:hover { color: var(--ink); border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.docnav a.here { color: var(--on-accent); background: var(--grad); border-color: transparent; }
.btn {
  display: inline-flex; align-items: center; gap: 0.5ch;
  background: var(--grad); color: var(--on-accent);
  font-weight: 700; font-size: 0.95rem; text-decoration: none;
  padding: 0.55rem 1rem; border-radius: 0.7rem; white-space: nowrap;
  box-shadow: 0 0.4rem 1.1rem -0.5rem color-mix(in srgb, var(--accent) 70%, transparent);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 0.6rem 1.4rem -0.5rem color-mix(in srgb, var(--accent) 80%, transparent);
}
.btn .arrow { transition: transform 0.15s ease; }
.btn:hover .arrow { transform: translateX(3px); }
.btn.ghost {
  background: transparent; color: var(--ink); box-shadow: none;
  border: 1px solid var(--line);
}
.btn.ghost:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); background: var(--card); }

/* ---- layout ---- */
main { max-width: 46rem; margin: 0 auto; padding: clamp(1.6rem, 4vw, 3rem) 1.3rem 4rem; }
.crumb { font-size: 0.85rem; color: var(--muted); margin: 0 0 0.6rem; }
.crumb a { color: var(--muted); text-decoration: none; }
.crumb a:hover { color: var(--accent); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 0.5ch;
  font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--muted); font-weight: 700;
}
h1 {
  font-size: clamp(2rem, 5.5vw, 2.9rem); line-height: 1.06;
  letter-spacing: -0.03em; font-weight: 800; margin: 0.7rem 0 0;
}
.lede { font-size: clamp(1.05rem, 2.2vw, 1.2rem); color: var(--muted); margin: 1rem 0 0; max-width: 38rem; }
h2 {
  font-size: 1.35rem; letter-spacing: -0.01em; font-weight: 750;
  margin: 2.6rem 0 0.4rem; scroll-margin-top: 4.5rem;
}
h3 { font-size: 1.06rem; font-weight: 700; margin: 1.6rem 0 0.3rem; }
p { margin: 0.6rem 0 0; }
main a { font-weight: 600; }
strong, b { font-weight: 650; color: var(--ink); }
code {
  font-family: var(--mono); font-size: 0.88em;
  background: color-mix(in srgb, var(--accent) 10%, var(--card));
  border: 1px solid var(--line); border-radius: 0.4rem; padding: 0.05rem 0.35rem;
}
ul { margin: 0.6rem 0 0; padding-left: 1.2rem; }
li { margin: 0.35rem 0; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2.4rem 0; }

/* ---- doc index cards ---- */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.9rem; margin: 1.8rem 0 0; }
@media (max-width: 34rem) { .cards { grid-template-columns: 1fr; } }
.dcard {
  display: block; text-decoration: none; color: inherit;
  background: var(--card); border: 1px solid var(--line); border-radius: 0.9rem;
  padding: 1.1rem 1.15rem;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.dcard:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  box-shadow: 0 1.2rem 2.6rem -1.6rem color-mix(in srgb, var(--accent) 45%, rgba(0,0,0,0.5));
}
.dcard .t { font-weight: 700; font-size: 1.05rem; display: flex; align-items: center; gap: 0.5ch; }
.dcard .t .ic { font-size: 1.15rem; }
.dcard .d { color: var(--muted); font-size: 0.94rem; margin: 0.35rem 0 0; }

/* ---- callout / feature rows ---- */
.callout {
  margin: 1.4rem 0 0; padding: 1rem 1.1rem;
  background: var(--card); border: 1px solid var(--line);
  border-left: 3px solid var(--accent); border-radius: 0.7rem;
}
.callout .h { font-weight: 700; }
.feature { display: flex; gap: 0.8rem; align-items: flex-start; padding: 0.75rem 0; border-bottom: 1px solid var(--line); }
.feature:last-child { border-bottom: 0; }
.feature .ic { font-size: 1.3rem; line-height: 1.3; flex: 0 0 auto; }
.feature .b { font-weight: 650; }
.feature .m { color: var(--muted); }

.tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1rem 0 0; }
.tag {
  font-size: 0.9rem; font-weight: 600; color: var(--ink);
  background: var(--card); border: 1px solid var(--line);
  border-radius: 0.65rem; padding: 0.38rem 0.75rem;
}
.tag::before { content: "✓"; color: var(--accent); font-weight: 700; margin-right: 0.4ch; }

/* ---- steps ---- */
.steps { display: grid; gap: 0.1rem; margin: 1rem 0 0; }
.step { display: flex; gap: 0.9rem; align-items: baseline; padding: 0.7rem 0; border-bottom: 1px solid var(--line); }
.step:last-child { border-bottom: 0; }
.step .n {
  font-variant-numeric: tabular-nums; font-weight: 800; color: var(--accent);
  font-size: 0.95rem; min-width: 1.6rem;
}
.step .b { font-weight: 650; }
.step .m { color: var(--muted); }

/* ---- FAQ (native details) ---- */
.faq { margin: 1.4rem 0 0; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; padding: 0.95rem 0.2rem;
  font-weight: 650; font-size: 1.03rem; display: flex; align-items: center; gap: 0.7rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: "+"; color: var(--accent); font-weight: 800; font-size: 1.2rem;
  width: 1rem; text-align: center; transition: transform 0.15s ease;
}
.faq details[open] summary::before { content: "–"; }
.faq summary:hover { color: var(--accent); }
.faq .a { color: var(--muted); padding: 0 0.2rem 1rem 1.7rem; }
.faq .a a { color: var(--accent); }

/* ---- next / prev + CTA band ---- */
.cta-band {
  margin: 2.8rem 0 0; padding: 1.4rem 1.3rem;
  background: var(--card); border: 1px solid var(--line); border-radius: 1rem;
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.9rem 1.2rem;
}
.cta-band .t { font-weight: 750; font-size: 1.1rem; }
.cta-band .m { color: var(--muted); font-size: 0.95rem; margin: 0.2rem 0 0; }
.cta-band .actions { margin-left: auto; display: flex; gap: 0.6rem; flex-wrap: wrap; }
.chip {
  display: inline-flex; align-items: center; font-family: var(--mono);
  font-weight: 600; font-size: 0.92em; text-decoration: none;
  background: var(--grad); color: var(--on-accent);
  padding: 0.2em 0.6em; border-radius: 0.5em;
}

footer {
  max-width: 46rem; margin: 3rem auto 0; padding: 1.4rem 1.3rem 3rem;
  border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem;
  display: flex; gap: 1rem 1.4rem; flex-wrap: wrap; align-items: center;
}
footer a { color: var(--accent); text-decoration: none; }
footer .spacer { margin-left: auto; }