/* Vibing tutorials — one stylesheet for /tutorial-index and every
   /tutorial-* page. Same tokens as site.css (the landing page), so a buyer
   moving between the two sees one product: warm cream page, navy bar,
   white cards, cobalt for actions, monospace wordmark. Screenshots come
   from media/tutorial/ (captured from the real app by product-vibing
   app/.preview-ads/capture-tutorials.mjs). */
:root {
  --navy: #151e30;
  --ink: #162039;
  --ink-2: #344058;
  --muted: #687387;
  --cream: #f5f2eb;
  --cream-2: #ece6da;
  --card: #ffffff;
  --line: rgba(22, 32, 57, 0.11);
  --cobalt: #315fd5;
  --cobalt-deep: #234ebd;
  --cobalt-soft: #eaf0ff;
  --violet: #7457e8;
  --teal: #159d98;
  --teal-soft: #e7f7f5;
  --amber-bg: #fff6e6;
  --amber-ink: #8a5208;
  --red-bg: #fdf0f0;
  --red-ink: #a52222;
  --on-navy: #f8f5ef;
  --on-navy-2: #bdc7d8;
  --mono: ui-monospace, "JetBrains Mono", SFMono-Regular, Menlo, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --shadow: 0 18px 50px rgba(28, 38, 62, 0.10), 0 2px 6px rgba(28, 38, 62, 0.04);
  color-scheme: light;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--cream); color: var(--ink); font: 16px/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; height: auto; }
a { color: var(--cobalt); font-weight: 600; text-decoration: none; }
a:hover { text-decoration: underline; }
b, strong { color: var(--ink); font-weight: 700; }
code, kbd { font-family: var(--mono); font-size: .88em; background: var(--cream-2); border-radius: 6px; padding: 1px 6px; color: var(--ink); }

.wrap { width: min(100% - 32px, 860px); margin-inline: auto; }
.wrap.wide { width: min(100% - 32px, 1040px); }

/* Top bar */
.tnav { background: var(--navy); color: var(--on-navy); position: sticky; top: 0; z-index: 10; }
.tnav .row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--on-navy); font: 800 17px var(--mono); letter-spacing: -.02em; }
.brand:hover { text-decoration: none; }
.brand img { width: 26px; height: 26px; }
.brand small { font: 600 11.5px var(--sans); color: var(--on-navy-2); letter-spacing: .02em; margin-left: 2px; }
.tnav .links { display: flex; gap: 18px; font-size: 14px; }
.tnav .links a { color: var(--on-navy-2); font-weight: 600; }
.tnav .links a:hover { color: #fff; text-decoration: none; }

/* Page head */
main { padding: 44px 0 90px; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; margin: 0 0 14px; color: var(--cobalt); font: 800 11.5px var(--sans); letter-spacing: .14em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 26px; height: 3px; border-radius: 3px; background: linear-gradient(90deg, var(--cobalt), var(--violet), var(--teal)); }
h1 { margin: 0; font-size: clamp(28px, 4.6vw, 40px); line-height: 1.12; letter-spacing: -.035em; font-weight: 800; }
.lead { margin: 14px 0 0; max-width: 64ch; color: var(--ink-2); font-size: 17px; }
.need { margin-top: 22px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); color: var(--ink-2); font-size: 14.5px; }
.need b { display: block; margin-bottom: 2px; color: var(--cobalt); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; }
.toc { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.toc a { padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--card); color: var(--ink-2); font-size: 13px; }

/* Sections and steps */
.part { margin: 46px 0 6px; color: var(--muted); font: 800 12px var(--sans); letter-spacing: .12em; text-transform: uppercase; }
.steps { list-style: none; margin: 28px 0 0; padding: 0; display: grid; gap: 22px; counter-reset: step; }
.part + .steps { margin-top: 14px; }
.step { counter-increment: step; padding: 24px; border: 1px solid var(--line); border-radius: 20px; background: var(--card); box-shadow: 0 8px 24px rgba(28, 38, 62, 0.05); }
.step h2 { display: flex; align-items: flex-start; gap: 14px; margin: 0; font-size: 19px; line-height: 1.35; letter-spacing: -.015em; }
.step h2::before { content: counter(step); flex: 0 0 34px; height: 34px; display: grid; place-items: center; margin-top: -3px; border-radius: 10px; background: var(--navy); color: #fff; font: 800 14px var(--mono); }
.step > p, .step > ul, .step > ol { margin: 10px 0 0 48px; color: var(--ink-2); font-size: 15.5px; }
.step > ul, .step > ol { padding-left: 18px; }
.step li + li { margin-top: 4px; }
.shot { margin: 16px 0 0; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: #f7f8fb; box-shadow: var(--shadow); }
.shot img { width: 100%; }
.shot.small { max-width: 560px; }
.shot.medium { max-width: 720px; }
.shot figcaption { padding: 9px 14px; border-top: 1px solid var(--line); background: #fff; color: var(--muted); font-size: 12.5px; }
.note, .warn, .tip { margin: 14px 0 0 48px; padding: 12px 14px; border-radius: 12px; font-size: 14px; }
.note { background: var(--cobalt-soft); color: #23407f; }
.tip { background: var(--teal-soft); color: #0f5f5c; }
.warn { background: var(--red-bg); color: var(--red-ink); }
.note b, .tip b, .warn b { color: inherit; }
.example { margin: 14px 0 0 48px; padding: 13px 15px; border-left: 3px solid var(--cobalt); border-radius: 0 12px 12px 0; background: #f7f9ff; color: var(--ink-2); font-size: 14.5px; }
.example b { display: block; margin-bottom: 3px; color: var(--cobalt); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; }

/* Prev / next */
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 46px; }
.pager a { display: block; padding: 16px 18px; border: 1px solid var(--line); border-radius: 16px; background: var(--card); color: var(--ink); }
.pager a:hover { border-color: var(--cobalt); text-decoration: none; }
.pager small { display: block; color: var(--muted); font-size: 12px; font-weight: 600; }
.pager .next { text-align: right; grid-column: 2; }
.help { margin-top: 26px; color: var(--muted); font-size: 14px; text-align: center; }

/* Index */
.groups { display: grid; gap: 34px; margin-top: 36px; }
.group h2 { margin: 0 0 12px; color: var(--muted); font: 800 12px var(--sans); letter-spacing: .12em; text-transform: uppercase; }
.cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.card { display: grid; grid-template-rows: auto 1fr; overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: var(--card); color: var(--ink); box-shadow: 0 8px 24px rgba(28, 38, 62, 0.05); transition: transform .15s, border-color .15s; }
.card:hover { transform: translateY(-2px); border-color: var(--cobalt); text-decoration: none; }
.card .thumb { aspect-ratio: 16 / 9; overflow: hidden; background: #eef1f6; border-bottom: 1px solid var(--line); }
.card .thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top left; }
.card .body { padding: 14px 16px 16px; }
.card .num { color: var(--cobalt); font: 800 12px var(--mono); }
.card b { display: block; margin-top: 2px; font-size: 16px; line-height: 1.35; }
.card span { display: block; margin-top: 4px; color: var(--muted); font-size: 13.5px; font-weight: 500; }
.badge { display: inline-block; margin-left: 6px; padding: 1px 7px; border-radius: 999px; background: var(--teal-soft); color: #0f6f6b; font: 700 10.5px var(--sans); vertical-align: 2px; }

footer { padding: 26px 0 40px; color: var(--muted); font-size: 13px; text-align: center; }

@media (max-width: 720px) {
  main { padding-top: 32px; }
  .tnav .links a.hide-sm { display: none; }
  .step { padding: 18px; }
  .step > p, .step > ul, .step > ol, .note, .warn, .tip, .example { margin-left: 0; }
  .cards { grid-template-columns: 1fr; }
  .pager { grid-template-columns: 1fr; }
  .pager .next { grid-column: auto; }
}