:root {
  --bg: #faf8f4; --card: #ffffff; --ink: #1d1a22; --muted: #625c6b; --line: #e6e1d8;
  --off: #b4441c; --off-bg: #fbe9e1; --on: #17733f; --on-bg: #e2f4e8; --accent: #3b4fd8;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #15131a; --card: #1e1b24; --ink: #ece8f2; --muted: #a69fb2; --line: #332e3c;
    --off: #ff8a5c; --off-bg: #3a2119; --on: #6fdc97; --on-bg: #17301f; --accent: #8c9bff; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.wrap { max-width: 720px; margin: 0 auto; padding: 20px 12px 40px; }
.intro h1 { font-size: 1.5rem; line-height: 1.25; margin: 0 0 .4em; }
.intro p { margin: 0 0 .6em; color: var(--muted); }
.legend { font-size: .85rem; display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: center; }
.lost-def { margin-left: auto; }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; vertical-align: -1px; margin-right: 2px; }
.dot.white { background: #fff; box-shadow: 0 0 0 1.5px #8d8597; }
.dot.red { background: #ff4d2e; box-shadow: 0 0 0 1.5px #3a0d08; }

.trick { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 14px 10px; margin: 18px 0; }
.trick h2 { font-size: 1.15rem; margin: 0; display: flex; align-items: center; gap: 9px; }
.num { display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--ink); color: var(--card); font-size: .85rem; flex: none; }
.rule { margin: 4px 0 12px; color: var(--muted); font-size: .93rem; }

.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.side { margin: 0; min-width: 0; transition: opacity .2s; }
.side-head { display: flex; justify-content: space-between; align-items: baseline; gap: 6px; margin-bottom: 5px; }
.tag { font-size: .78rem; font-weight: 700; padding: 2px 8px; border-radius: 99px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.without .tag { color: var(--off); background: var(--off-bg); }
.with .tag { color: var(--on); background: var(--on-bg); }
.stat { font-size: .75rem; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.stage { position: relative; border-radius: 8px; overflow: hidden; background: #09080f; line-height: 0; }
.stage canvas { display: block; width: 100%; height: auto; aspect-ratio: 22 / 14; image-rendering: pixelated; outline: none; }
.without .stage { box-shadow: 0 0 0 2px var(--off-bg); }
.with .stage { box-shadow: 0 0 0 2px var(--on-bg); }
.where { font-size: .75rem; color: var(--muted); margin-top: 4px; }
.live { font-size: .88rem; min-height: 2.9em; margin-top: 2px; line-height: 1.4; }
.live.pop { animation: pop .35s ease-out; }
@keyframes pop { from { opacity: 0; transform: translateY(3px); } }

.summary { margin: 8px 0 6px; padding: 8px 10px; border-radius: 8px; background: var(--bg); font-size: .9rem; color: var(--muted); min-height: 3.2em; }
.summary.done { color: var(--ink); }
.controls { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.btn { font: inherit; font-size: .85rem; padding: 6px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); color: var(--ink); cursor: pointer; min-height: 34px; }
.btn:hover { border-color: var(--muted); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn.primary { background: var(--ink); color: var(--card); border-color: var(--ink); }
.you { font-size: .8rem; color: var(--muted); margin-left: auto; }
.foot { font-size: .75rem; color: var(--muted); margin: 8px 0 0; }

/* play mode */
.playing .side.idle { opacity: .35; }
.playing .side.active .stage { box-shadow: 0 0 0 3px var(--accent); }
.playing .side.active canvas { touch-action: none; cursor: crosshair; }
.overlay { position: absolute; inset: 0; display: none; place-items: center; pointer-events: none; line-height: 1.35; }
.overlay.show { display: grid; }
.hint { background: rgba(10, 8, 18, .82); color: #fff; padding: 8px 12px; border-radius: 8px; font-size: .85rem; text-align: center; max-width: 85%; }
.result { pointer-events: auto; background: rgba(10, 8, 18, .9); color: #fff; padding: 10px 14px; border-radius: 10px; text-align: center; display: grid; gap: 3px; font-size: .82rem; max-width: 92%; }
.result strong { font-size: 1rem; }
.result .row { display: flex; gap: 6px; justify-content: center; margin-top: 6px; }
.result .btn { background: #2a2534; color: #fff; border-color: #4a4458; padding: 4px 10px; min-height: 30px; }
.result .btn.primary { background: #fff; color: #15131a; }

.credits { font-size: .8rem; color: var(--muted); margin-top: 24px; }
.credits a { color: inherit; }
code { font-size: .9em; }

@media (max-width: 560px) {
  .wrap { padding: 14px 10px 30px; }
  .intro h1 { font-size: 1.3rem; }
  .pair { grid-template-columns: 1fr; gap: 14px; }
  .trick { padding: 12px 10px 8px; }
  .live { min-height: 0; }
  .lost-def { margin-left: 0; }
}

/* ?trick=<id>&solo : just the one card, ready for an iframe */
.solo body { background: transparent; }
.solo .intro, .solo .credits { display: none; }
.solo .wrap { padding: 0; }
.solo .trick { margin: 0; }