/* Swiss Pop Lite. The rules are in DESIGN.md; scripts/check-design.mjs enforces them.
   Tokens: every colour, font and shape lives in this :root block and nowhere else. */
:root {
  --ink: #131522;
  --paper: #F5F4EE;
  --card: #FFFEF9;
  --muted: #6D6C61;
  --hairline: #DCDAD0;
  --signal: #FFD600;
  --works: #4FD8B4;
  --works-text: #0A7A5F;
  --open: #FFC266;
  --open-text: #9E5300;
  --broken: #FF9AA9;
  --broken-text: #B3122F;
  --code-bg: #131522;
  --code-fg: #E8EAF3;
  --code-muted: #A3A6B4;

  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --radius: 14px;
  --radius-pill: 999px;
  --outline: 2px solid var(--ink);
  --shadow: 6px 6px 0 var(--ink);
  --width: 1080px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.55 var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
code { font-family: var(--font-mono); font-size: 0.88em; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: 3px solid var(--ink); outline-offset: 3px; }

.wrap { max-width: var(--width); margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */

.site-header { padding: 20px 0; }
.site-header .wrap { display: flex; align-items: center; gap: 24px; }
.brand { font-weight: 800; letter-spacing: -0.01em; text-decoration: none; }
.brand span { font: 500 13px var(--font-mono); color: var(--muted); margin-left: 8px; }
.site-nav { display: flex; gap: 20px; margin-left: auto; font-size: 15px; }
.site-nav a { text-decoration: none; }
.site-nav a:hover { text-decoration: underline; }

/* ---------- buttons, chips, labels ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border: var(--outline);
  border-radius: var(--radius-pill);
  background: var(--card);
  color: var(--ink);
  font: 700 16px var(--font-sans);
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 2px 2px 0 var(--ink); }
.btn.is-signal { background: var(--signal); box-shadow: var(--shadow); }
.btn.is-signal:hover { transform: translate(-2px, -2px); box-shadow: 8px 8px 0 var(--ink); }
.btn-small { padding: 6px 14px; font-size: 14px; }

.chip {
  display: inline-block;
  padding: 3px 10px;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius-pill);
  font: 500 12px/1.4 var(--font-mono);
  color: var(--ink);
  white-space: nowrap;
}
.chip.works { background: var(--works); }
.chip.open { background: var(--open); }
.chip.broken { background: var(--broken); }

.label {
  margin: 0 0 12px;
  font: 500 13px var(--font-mono);
  letter-spacing: 0.02em;
  color: var(--muted);
}

h1, h2, h3 { margin: 0; letter-spacing: -0.02em; line-height: 1.1; }
h1 { font-size: clamp(40px, 6vw, 68px); font-weight: 800; }
h2 { font-size: clamp(28px, 3.6vw, 40px); font-weight: 800; margin-bottom: 32px; }
h3 { font-size: 19px; font-weight: 700; }

.section { padding: 72px 0; }

/* ---------- hero ---------- */

.hero { padding: 48px 0 72px; }
.hero .wrap { display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; align-items: center; }
.lead { font-size: 20px; max-width: 34ch; margin: 24px 0 0; }
.facts { display: flex; flex-wrap: wrap; gap: 8px 24px; margin: 28px 0 32px; padding: 0; list-style: none;
  font: 500 14px var(--font-mono); }
.facts b { font-weight: 700; }
.actions { display: flex; flex-wrap: wrap; gap: 16px; }

.pr-card {
  background: var(--card);
  border: var(--outline);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}
.pr-card header { display: flex; justify-content: space-between; gap: 12px;
  font: 500 13px var(--font-mono); color: var(--muted); }
.pr-card h3 { margin: 12px 0 20px; font-size: 22px; }
.checklist { list-style: none; margin: 0; padding: 0; }
.checklist li { display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 12px 0; border-top: 1px solid var(--hairline); font-size: 15px; }
.shots { display: grid; grid-template-columns: 3fr 1fr; gap: 10px; margin-top: 16px; }
.shot { border: 1.5px solid var(--ink); border-radius: 8px; background: var(--paper); height: 88px;
  padding: 10px; display: flex; flex-direction: column; gap: 6px; }
.shot i { display: block; height: 7px; border-radius: 4px; background: var(--hairline); }
.shot i:first-child { width: 60%; background: var(--ink); }
/* The button in the mock screenshot is drawn as an outline: the page keeps its single yellow. */
.shot i.y { width: 34%; height: 9px; background: var(--card); border: 1.5px solid var(--ink); }

/* ---------- steps ---------- */

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin: 0; padding: 0; list-style: none;
  counter-reset: step; }
.step { background: var(--card); border: var(--outline); border-radius: var(--radius); padding: 24px;
  position: relative; }
.step::before { counter-increment: step; content: "0" counter(step);
  display: block; font: 700 32px var(--font-mono); margin-bottom: 16px; }
.step p { margin: 8px 0 0; font-size: 15px; color: var(--muted); }
.step code { font: 500 13px var(--font-mono); color: var(--ink); }

/* ---------- receipts ---------- */

.receipts { background: var(--card); border: var(--outline); border-radius: var(--radius);
  list-style: none; margin: 0; padding: 0 24px; }
.receipts li { display: flex; justify-content: space-between; align-items: center; gap: 24px;
  padding: 20px 0; border-top: 1px solid var(--hairline); }
.receipts li:first-child { border-top: 0; }
.receipts p { margin: 4px 0 0; font-size: 15px; color: var(--muted); }
.receipts code { font: 500 13px var(--font-mono); color: var(--ink); }

/* ---------- faq ---------- */

.faq { list-style: none; margin: 0; padding: 0; display: grid; gap: 20px; }
.faq li { background: var(--card); border: var(--outline); border-radius: var(--radius); }
.faq summary { display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 24px; cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq .toggle { flex: none; display: grid; place-items: center; width: 32px; height: 32px;
  border: 1.5px solid var(--ink); border-radius: var(--radius-pill); font: 700 18px/1 var(--font-mono); }
.faq .toggle::before { content: "+"; }
.faq details[open] .toggle::before { content: "\2212"; }
.faq details p { margin: 0; padding: 0 24px 24px; font-size: 15px; color: var(--muted); }
.faq code { font: 500 13px var(--font-mono); color: var(--ink); }

/* ---------- try it ---------- */

.code-card { background: var(--code-bg); color: var(--code-fg); border-radius: var(--radius); padding: 8px 24px; }
.prompt { display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 16px 0; border-top: 1px solid var(--muted); }
.prompt:first-child { border-top: 0; }
.prompt code { font: 500 15px/1.5 var(--font-mono); }
.prompt code b { color: var(--signal); font-weight: 500; }
.copy { flex: none; background: transparent; color: var(--code-fg); border: 1.5px solid var(--code-muted);
  border-radius: var(--radius-pill); padding: 6px 14px; font: 500 13px var(--font-mono); cursor: pointer; }
.copy:hover { border-color: var(--code-fg); }
.note { margin: 20px 0 0; font-size: 15px; color: var(--muted); }

/* ---------- footer ---------- */

.site-footer { padding: 40px 0 56px; border-top: 1px solid var(--hairline); font-size: 15px; color: var(--muted); }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; }

/* ---------- phones ---------- */

@media (max-width: 960px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .wrap { padding: 0 16px; }
  .site-nav { display: none; }
  .hero { padding-top: 24px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 40px; }
  .section { padding: 56px 0; }
  .steps { grid-template-columns: 1fr; }
  .receipts li { flex-direction: column; align-items: flex-start; gap: 10px; }
  .prompt { flex-direction: column; align-items: flex-start; }
}