@font-face { font-family: KenneyMini; src: url(assets/fonts/KenneyMiniSquare.ttf) format('truetype'); font-display: block; }

:root {
  color-scheme: light;
  --bg: #fcfcfb;
  --card: #ffffff;
  --line: #e4e3df;
  --ink: #0b0b0b;
  --ink2: #52514e;
  --muted: #76756f;
  --code: #f3f2ef;
  --accent: #2a78d6;
  --off: #6f6e69;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #121211;
    --card: #1c1c1a;
    --line: #34332f;
    --ink: #f0efec;
    --ink2: #c3c2b7;
    --muted: #9a998f;
    --code: #262522;
    --accent: #3987e5;
    --off: #8c8b85;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 16px 12px 32px; }

h1, h2 { font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: 26px; margin: 4px 0 8px; }
.intro p { margin: 0 0 12px; color: var(--ink2); }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; justify-content: space-between; }
#nav { display: flex; flex-wrap: wrap; gap: 6px; }
#nav a {
  font-size: 13px; text-decoration: none; color: var(--ink2);
  border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px; background: var(--card);
}
#nav a:hover { color: var(--accent); border-color: var(--accent); }

button {
  font: inherit; font-size: 14px; color: var(--ink); background: var(--card);
  border: 1px solid var(--line); border-radius: 8px; padding: 6px 12px; cursor: pointer;
  min-height: 36px;
}
button:hover { border-color: var(--accent); }
button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
button.hit { background: #c98500; border-color: #c98500; color: #fff; font-weight: 600; }

.trick {
  margin: 20px 0; padding: 16px; background: var(--card);
  border: 1px solid var(--line); border-radius: 14px;
  scroll-margin-top: 12px;
}
.trick h2 { font-size: 19px; margin: 0 0 4px; display: flex; gap: 10px; align-items: baseline; }
.trick h2 .num {
  flex: none; display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent); color: #fff; font-size: 14px; transform: translateY(-2px);
}
.blurb { margin: 0 0 12px; color: var(--ink2); }

.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.side { margin: 0; min-width: 0; }
.side figcaption { font-size: 13px; color: var(--ink2); margin-bottom: 6px; display: flex; gap: 6px; align-items: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pill { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; padding: 2px 8px; border-radius: 999px; color: #fff; flex: none; }
.pill.off { background: var(--off); }
.pill.on { background: var(--accent); }
.canvas-wrap { position: relative; }
canvas {
  display: block; width: 100%; height: auto; aspect-ratio: 320 / 254;
  border-radius: 10px; background: #1a1a19; touch-action: manipulation;
  image-rendering: pixelated;
}
.playing canvas { cursor: pointer; }
.tip {
  position: absolute; z-index: 2; width: 140px; pointer-events: none;
  background: #0b0b0b; color: #f0efec; border: 1px solid #3a3934; border-radius: 6px;
  padding: 5px 8px; font-size: 12px; line-height: 1.35;
}
.tip span { color: #c3c2b7; }
.stat { font-size: 13px; font-variant-numeric: tabular-nums; margin: 6px 0 4px; min-height: 1.5em; }
.formula {
  margin: 0; padding: 7px 9px; background: var(--code); border-radius: 8px;
  font: 11.5px/1.45 ui-monospace, "SF Mono", Menlo, Consolas, monospace; color: var(--ink2);
  white-space: pre-wrap; word-break: break-word;
}

.caption {
  margin: 12px 0 10px; padding: 10px 12px; border-radius: 10px; background: var(--code);
  min-height: 4.6em; color: var(--ink2); font-size: 14.5px;
  transition: background-color .3s;
}
.caption b { color: var(--ink); }
.caption.result { background: color-mix(in srgb, var(--accent) 14%, var(--card)); }
.controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.solo-link { margin-left: auto; font-size: 13px; color: var(--muted); }
.solo-link code { font-size: 12px; }

.numbers { margin-top: 10px; font-size: 13px; color: var(--ink2); }
.numbers summary { cursor: pointer; }
.numbers table { border-collapse: collapse; margin-top: 6px; font-variant-numeric: tabular-nums; }
.numbers th, .numbers td { padding: 2px 12px 2px 0; text-align: right; border-bottom: 1px solid var(--line); }
.numbers th:first-child, .numbers td:first-child { text-align: left; }

.foot { font-size: 13px; color: var(--muted); margin-top: 24px; }
.foot a { color: inherit; }

/* Phones: stack the two sides, keep labels so left/right is still clear */
@media (max-width: 560px) {
  .wrap { padding: 12px 10px 24px; }
  h1 { font-size: 22px; }
  .trick { padding: 12px; margin: 14px 0; }
  .trick h2 { font-size: 17px; }
  .pair { grid-template-columns: 1fr; gap: 16px; }
  .solo-link { margin-left: 0; width: 100%; }
}

/* ?trick=<id>&solo : just the one demo, for embedding */
body.solo { background: transparent; }
body.solo .intro, body.solo .foot { display: none; }
body.solo .wrap { padding: 0; }
body.solo .trick { margin: 0; }