@font-face {
  font-family: "Silkscreen";
  src: url("assets/fonts/Silkscreen-Regular.ttf") format("truetype");
  font-display: swap;
}

:root {
  --page: #f3f1ec;
  --text: #1f2229;
  --card: #161920;
  --card-2: #1f232c;
  --ink: #e8ebf1;
  --muted: #9aa2b1;
  --line: #2c313c;
  --hot: #ffd166;
  --pass: #7fd99a;
  --fail: #ff8f8f;
  --pixel: "Silkscreen", ui-monospace, monospace;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--page);
  color: var(--text);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 16px; }

.intro h1 { font-size: 1.45rem; line-height: 1.25; margin: 0.2em 0 0.4em; }
.intro p { margin: 0 0 0.8em; }
.intro nav { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.intro nav a {
  font: 11px var(--pixel); text-decoration: none; color: var(--ink); background: var(--card);
  padding: 6px 9px; border-radius: 999px;
}
.outro { font-size: 13px; color: #5a606c; }
.outro code { background: #e4e1da; padding: 1px 4px; border-radius: 4px; }

/* ---------- demo card ---------- */
.demo {
  background: var(--card); color: var(--ink);
  border-radius: 14px; padding: 16px; margin: 0 0 22px;
  scroll-margin-top: 12px;
}
.demo > header { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 12px; }
.demo .num { font: 13px var(--pixel); color: var(--hot); padding-top: 4px; }
.demo h2 { font: 18px/1.2 var(--pixel); margin: 0 0 4px; letter-spacing: 0.02em; }
.demo .rule { margin: 0; color: var(--muted); font-size: 14px; }

.stage { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.side { margin: 0; min-width: 0; display: flex; flex-direction: column; gap: 6px; }
.tag { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.tag .label { font: 12px var(--pixel); padding: 2px 7px; border-radius: 4px; background: var(--card-2); color: var(--muted); }
.side.on .tag .label { background: var(--hot); color: #1a1a1a; }
.tag .count { font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }

.side canvas:not(.wheel) {
  width: 100%; height: auto; aspect-ratio: 160 / 96; display: block;
  image-rendering: pixelated; image-rendering: crisp-edges;
  border-radius: 6px; background: #000;
}
.demo.playing .side canvas:not(.wheel) { outline: 2px solid var(--hot); outline-offset: 2px; }
.wheel { width: 84px; height: 84px; align-self: center; }

.swatches { display: flex; flex-wrap: wrap; gap: 5px; align-items: center; min-height: 16px; }
.strip { display: inline-flex; border-radius: 4px; overflow: hidden; box-shadow: 0 0 0 1px #0007; }
.sw {
  width: 15px; height: 15px; padding: 0; border: 0; margin: 0; cursor: pointer; display: block;
}
.sw[aria-pressed="true"] { outline: 2px solid #fff; outline-offset: -2px; box-shadow: inset 0 0 0 3px #000; }
.sw:focus-visible { outline: 2px solid var(--hot); outline-offset: -2px; }
.more { font-size: 12px; color: var(--muted); }

/* ---------- controls ---------- */
.controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 12px; }
.btn, .chip, .pad button {
  font: inherit; font-size: 13px; color: var(--ink); background: var(--card-2);
  border: 1px solid var(--line); border-radius: 8px; padding: 6px 11px; cursor: pointer;
  touch-action: manipulation;
}
.btn:hover, .chip:hover { border-color: #4a5160; }
.btn[aria-pressed="true"], .chip[aria-pressed="true"] { background: var(--hot); color: #1a1a1a; border-color: var(--hot); }
.btn.hot:not([aria-pressed="true"]) { border-color: var(--hot); color: var(--hot); }
.btn:focus-visible, .chip:focus-visible, .pad button:focus-visible { outline: 2px solid var(--hot); outline-offset: 2px; }
.btn.copy { align-self: flex-start; font-size: 12px; padding: 4px 9px; }
.knob { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); flex-wrap: wrap; }
.knob input[type="range"] { width: 120px; accent-color: var(--hot); }
.knob output { color: var(--ink); font-variant-numeric: tabular-nums; min-width: 2.5em; }
.chip { padding: 4px 10px; }

.pad { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 10px; user-select: none; -webkit-user-select: none; }
.pad[hidden] { display: none; }
.pad button { min-width: 56px; min-height: 44px; font-size: 16px; touch-action: none; }
.pad button.down { background: var(--hot); color: #1a1a1a; }
.pad .hint { font-size: 12px; color: var(--muted); }

/* ---------- text ---------- */
.beats { display: flex; flex-wrap: wrap; gap: 4px 14px; list-style: none; padding: 0; margin: 12px 0 6px; font-size: 12px; color: #5d6574; }
.beats li::before { content: "○ "; }
.beats li.done { color: var(--ink); }
.beats li.done::before { content: "● "; color: var(--hot); }
.caption { margin: 0; font-size: 14.5px; line-height: 1.55; }
.caption b { color: #fff; }
.pass { color: var(--pass); }
.fail { color: var(--fail); }
.tip { margin: 8px 0 0; font-size: 12px; color: var(--muted); }

/* ---------- phone ---------- */
@media (max-width: 560px) {
  .wrap { padding: 10px; }
  .demo { padding: 12px; border-radius: 12px; }
  .stage { grid-template-columns: 1fr; gap: 14px; }
  .demo h2 { font-size: 16px; }
  .sw { width: 18px; height: 18px; }
  .pad button { flex: 1; }
  .pad .hint { display: none; }
}

/* ---------- ?trick=<id>&solo ---------- */
body.solo { background: transparent; }
body.solo .intro, body.solo .outro { display: none; }
body.solo .wrap { padding: 0; max-width: none; }
body.solo .demo { margin: 0; }