/* The client modpack's setup page (v1.1). Colours come from /theme.css (the server's branding, written by the
   Worker); no inline styles, no third-party fonts or files (CSP 'self'). Phone first, no horizontal scroll. */
:root {
  --bg: #12090d; --surface: #1d1116; --line: rgb(255 255 255 / .10); --muted: #b9a9b0;
  --text: #f2f5f7; --accent: #b03a5b; --secondary: #7b1e3a; --subtle: #d9e8ee;
  --good: #7ad65a; --bad: #ff8a80;
  --f-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --r: 14px;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) { :root { --bg: #f7f2f4; --surface: #ffffff; --line: rgb(40 10 20 / .12);
  --muted: #6b5960; --text: #24131a; color-scheme: light; } }
* { box-sizing: border-box; }
html, body { margin: 0; overflow-x: hidden; }
body { background: var(--bg); color: var(--text); font: 16px/1.55 var(--f-body); }
.wrap { width: min(860px, 100% - 32px); margin-inline: auto; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.hero { background: linear-gradient(135deg, var(--secondary), var(--accent)); color: #fff; padding: 40px 0 32px; }
.hero h1 { margin: 4px 0 8px; font-size: clamp(28px, 6vw, 44px); line-height: 1.1; }
.kicker { margin: 0; text-transform: uppercase; letter-spacing: .12em; font-size: 13px; opacity: .85; }
.lead { margin: 0; max-width: 46ch; font-size: 18px; opacity: .95; }
main { padding: 24px 0 48px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 20px; margin: 0 0 16px; }
.card h2 { margin: 0 0 8px; font-size: 21px; display: flex; gap: 10px; align-items: center; }
.num { display: inline-grid; place-items: center; width: 30px; height: 30px; flex: none; border-radius: 50%;
  background: var(--accent); color: #fff; font-size: 16px; }
.muted { color: var(--muted); }
.hello { font-size: 18px; margin: 0 0 16px; }
kbd { background: var(--line); border-radius: 6px; padding: 1px 6px; font-family: ui-monospace, Menlo, Consolas, monospace; }
.btn { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 10px 18px; border-radius: 10px;
  border: 1px solid var(--line); background: transparent; color: var(--text); font: 600 16px var(--f-body);
  text-decoration: none; cursor: pointer; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn:focus-visible, .tier:focus-visible, summary:focus-visible, input:focus-visible { outline: 3px solid var(--subtle); outline-offset: 2px; }
.linkbtn { background: none; border: 0; color: var(--muted); text-decoration: underline; cursor: pointer; font: inherit; }
.codeform { display: flex; flex-wrap: wrap; gap: 10px; }
.codeform input { flex: 1 1 160px; min-width: 0; min-height: 44px; padding: 8px 14px; font: 600 22px ui-monospace, Menlo, monospace;
  letter-spacing: .15em; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); color: var(--text); }
.err { color: var(--bad); }
.tiers { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-top: 12px; }
.tier { position: relative; text-align: left; padding: 16px; border-radius: 12px; border: 2px solid var(--line);
  background: var(--bg); color: var(--text); font: inherit; cursor: pointer; }
.tier[aria-checked="true"] { border-color: var(--accent); }
.tier b { display: block; font-size: 19px; }
.tier .ex { display: block; color: var(--muted); font-size: 14px; margin-top: 6px; }
.tier .size { display: block; color: var(--muted); font-size: 13px; margin-top: 6px; }
.badge { position: absolute; top: 10px; right: 10px; background: var(--accent); color: #fff; border-radius: 999px;
  font-size: 12px; padding: 2px 8px; }
.shot { display: block; width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--line); margin-top: 8px; }
details { border-top: 1px solid var(--line); padding: 10px 0; }
summary { cursor: pointer; font-weight: 600; min-height: 28px; }
.foot { text-align: center; }