:root {
  --bg: #111215; --surface: #1e1f23; --raised: #2c2e33; --hair: rgba(255,255,255,.08);
  --text: #fff; --secondary: #a3a3a3; --tertiary: #737373;
  --accent: #ff6629; --good: #30c75a; --bad: #ed4038; --pro: #fdc22e;
  --safe-top: env(safe-area-inset-top, 0px); --safe-right: env(safe-area-inset-right, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px); --safe-left: env(safe-area-inset-left, 0px);
  color-scheme: dark;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); overflow: hidden;
  font: 15px/1.35 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased; user-select: none; -webkit-user-select: none; touch-action: none; }
button { font: inherit; color: inherit; border: 0; cursor: pointer; }
#stage { position: fixed; inset: 0; width: 100%; height: 100%; display: block; }
.hidden { display: none !important; }

/* ---------- buttons & tags ---------- */
.btn { height: 34px; padding: 0 14px; border-radius: 8px; background: var(--raised); font-weight: 600; font-size: 13px;
  display: inline-flex; align-items: center; gap: 7px; white-space: nowrap; }
.btn:active { opacity: .75; }
.btn.accent { background: var(--accent); }
.btn.good { background: var(--good); }
.btn.big { height: 48px; padding: 0 24px; font-size: 16px; border-radius: 12px; }
.tag { font-size: 11px; font-weight: 800; letter-spacing: .6px; padding: 3px 7px; border-radius: 4px; background: var(--raised); }
.tag.pro { background: var(--pro); color: #000; }
.tag.dark { background: rgba(0,0,0,.7); }
.icon { width: 18px; height: 18px; display: inline-block; flex: none; }

/* ---------- menu ---------- */
#menu { position: fixed; inset: 0; background: var(--bg); display: flex; flex-direction: column; }
#menu header { padding: calc(22px + var(--safe-top)) 360px 0 calc(32px + var(--safe-left)); min-height: 196px; }
.brand { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.brand img { width: 36px; height: 36px; border-radius: 8px; }
.brand .name { font-size: 22px; font-weight: 700; margin-right: 8px; }
.brand .sep { width: 1px; height: 22px; background: var(--hair); margin: 0 4px; }
#menu h1 { margin: 34px 0 2px; font-size: 30px; }
#menu .sub { color: var(--secondary); }
.carousel { flex: 1; display: flex; align-items: center; gap: 20px; overflow-x: auto; padding: 18px calc(32px + var(--safe-left));
  scroll-behavior: smooth; scrollbar-width: none; }
.carousel::-webkit-scrollbar { display: none; }
.card { flex: none; width: 340px; height: 400px; background: var(--surface); border-radius: 14px; overflow: hidden; position: relative;
  border: 1px solid var(--hair); opacity: .8; transition: transform .18s ease-out, opacity .18s; display: flex; flex-direction: column; cursor: pointer; }
.card.selected { transform: scale(1.03); opacity: 1; border: 3px solid #fff; }
.card .art { height: 191px; background: #333 center/cover no-repeat; position: relative; flex: none; }
.card.locked .art { filter: saturate(.35); }
.card .tags { position: absolute; top: 10px; left: 10px; display: flex; gap: 6px; }
.card .body { padding: 16px; display: flex; flex-direction: column; flex: 1; }
.card .title { font-size: 20px; font-weight: 700; }
.card .tagline { color: var(--secondary); font-size: 13px; margin-top: 4px; }
.card ul { margin: 10px 0 0; padding: 0 0 0 16px; color: #ccc; font-size: 12.5px; }
.card li { margin: 3px 0; }
.card .foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; }
.card .best { color: var(--tertiary); font-size: 12px; font-weight: 500; }
.card .play { visibility: hidden; height: 28px; padding: 0 12px; border-radius: 7px; background: var(--accent); font-size: 13px; font-weight: 600; display: flex; align-items: center; gap: 6px; }
.card.selected .play { visibility: visible; }
.card.locked .play { background: var(--raised); }
.hints { border-top: 1px solid var(--hair); padding: 16px calc(32px + var(--safe-left)) calc(16px + var(--safe-bottom)); display: flex; gap: 28px; align-items: center; flex-wrap: wrap; }
.hint { display: flex; gap: 10px; align-items: center; }
.hint .tile { width: 34px; height: 34px; border-radius: 8px; background: var(--raised); display: grid; place-items: center; font-size: 17px; }
.hint b { display: block; font-size: 13px; }
.hint span { color: var(--secondary); font-size: 12px; }
.hints .kbd { margin-left: auto; color: var(--tertiary); font-size: 12px; }

/* ---------- live view ---------- */
#live { position: fixed; top: calc(18px + var(--safe-top)); right: calc(18px + var(--safe-right)); width: 300px; z-index: 30; pointer-events: none; }
#live .frame { position: relative; width: 100%; aspect-ratio: 16/9; border-radius: 12px; overflow: hidden; background: #000;
  border: 4px solid var(--bad); box-shadow: 0 3px 10px rgba(0,0,0,.4); transition: border-color .25s; }
#live.good .frame { border-color: var(--good); }
#live video, #live canvas { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transform: scaleX(-1); }
#live canvas { transform: none; }
#live .status { position: absolute; left: 8px; bottom: 8px; height: 26px; padding: 0 9px; border-radius: 7px; background: var(--bad);
  font-size: 12.5px; font-weight: 600; display: flex; align-items: center; gap: 6px; transition: background .25s; }
#live.good .status { background: var(--good); }
#live .rings { position: absolute; left: 8px; top: 8px; display: flex; gap: 6px; }
#live .ring { width: 42px; height: 42px; }
#live .offline { position: absolute; inset: 0; display: grid; place-items: center; color: #ccc; font-size: 12px; text-align: center; }

/* ---------- HUD ---------- */
#hud { position: fixed; top: calc(20px + var(--safe-top)); left: calc(20px + var(--safe-left)); z-index: 20; pointer-events: none;
  display: flex; background: rgba(0,0,0,.72); border-radius: 12px; padding: 10px 0; }
#hud .stat { padding: 0 18px; border-left: 1px solid rgba(255,255,255,.12); }
#hud .stat:first-child { border-left: 0; }
#hud .label { font-size: 10px; font-weight: 700; letter-spacing: 1px; color: var(--secondary); }
#hud .value { font-size: 30px; font-weight: 700; font-variant-numeric: tabular-nums; line-height: 1.15; }
#hud .hearts { font-size: 17px; height: 36px; display: flex; align-items: center; gap: 3px; color: var(--bad); }
#hud .hearts .off { color: rgba(255,255,255,.18); }
#banner { position: fixed; top: calc(130px + var(--safe-top)); left: 50%; transform: translateX(-50%); z-index: 21; pointer-events: none;
  font-size: 30px; font-weight: 800; padding: 10px 22px; border-radius: 10px; background: rgba(0,0,0,.75); transition: opacity .18s; white-space: nowrap; }
#pauseBtn { position: fixed; z-index: 22; top: calc(20px + var(--safe-top)); left: 50%; transform: translateX(-50%); width: 44px; height: 44px;
  border-radius: 22px; background: rgba(0,0,0,.55); display: grid; place-items: center; font-size: 16px; }
#combo { position: fixed; z-index: 21; right: calc(20px + var(--safe-right)); bottom: calc(24px + var(--safe-bottom)); pointer-events: none;
  font-size: 15px; font-weight: 700; padding: 8px 14px; border-radius: 10px; background: rgba(0,0,0,.6); }

/* ---------- overlays ---------- */
.scrim { position: fixed; inset: 0; z-index: 40; background: rgba(0,0,0,.72); display: grid; place-items: center; }
.panel { background: var(--surface); border: 1px solid var(--hair); border-radius: 18px; padding: 34px; min-width: 520px; max-width: min(620px, 92vw);
  display: flex; flex-direction: column; align-items: center; gap: 16px; text-align: center; }
.panel h2 { margin: 0; font-size: 32px; }
.panel p { margin: 0; color: var(--secondary); }
.panel .eyebrow { font-size: 12px; font-weight: 700; letter-spacing: 1.2px; color: var(--secondary); text-transform: uppercase; }
.panel .score { font-size: 84px; font-weight: 800; font-variant-numeric: tabular-nums; line-height: 1; }
.choices { display: flex; gap: 14px; margin-top: 6px; }
.choice { width: 200px; height: 132px; border-radius: 12px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; background: var(--raised); }
.choice.good { background: var(--good); }
.choice .sym { font-size: 30px; }
.choice b { font-size: 17px; }
.choice span { font-size: 12px; opacity: .75; }
.pill { display: inline-flex; align-items: center; gap: 8px; height: 38px; padding: 0 16px; border-radius: 9px; font-weight: 600; background: var(--bad); }
.pill.good { background: var(--good); }
.idbox { display: flex; gap: 10px; align-items: center; background: var(--bg); border-radius: 10px; padding: 10px 16px; font: 600 20px ui-monospace, Menlo, monospace; user-select: text; -webkit-user-select: text; }
#countdown { position: fixed; inset: 0; z-index: 35; display: grid; place-items: center; pointer-events: none; font-size: 180px; font-weight: 800;
  text-shadow: 0 3px 6px rgba(0,0,0,.5); font-variant-numeric: tabular-nums; }
#countdown span { animation: pop .3s ease-out; }
@keyframes pop { from { transform: scale(1.3); opacity: 0; } to { transform: scale(1); opacity: 1; } }
#holdRing { position: fixed; z-index: 36; left: 50%; top: 50%; transform: translate(-50%,-50%); padding: 20px; border-radius: 14px; background: rgba(0,0,0,.75);
  display: flex; flex-direction: column; align-items: center; gap: 10px; font-size: 13px; font-weight: 600; pointer-events: none; }
#toast { position: fixed; z-index: 50; bottom: calc(30px + var(--safe-bottom)); left: 50%; transform: translateX(-50%); background: var(--raised);
  padding: 0 16px; height: 38px; border-radius: 9px; display: flex; align-items: center; font-weight: 600; font-size: 14px; }

/* ---------- settings ---------- */
.settings { text-align: left; align-items: stretch; min-width: 440px; }
.settings h2 { font-size: 24px; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--hair); }
.row:last-of-type { border-bottom: 0; }
.row label { font-weight: 600; }
.row small { display: block; color: var(--tertiary); font-weight: 400; }
select, input[type=range] { accent-color: var(--accent); }
select { background: var(--raised); color: #fff; border: 0; border-radius: 8px; height: 34px; padding: 0 10px; font: inherit; max-width: 220px; }
.switch { width: 46px; height: 28px; border-radius: 14px; background: var(--raised); position: relative; flex: none; }
.switch::after { content: ""; position: absolute; top: 3px; left: 3px; width: 22px; height: 22px; border-radius: 11px; background: #fff; transition: transform .15s; }
.switch.on { background: var(--good); }
.switch.on::after { transform: translateX(18px); }

/* ---------- start screen ---------- */
#start { position: fixed; inset: 0; z-index: 60; background: var(--bg); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px; text-align: center; padding: 24px; }
#start img { width: 96px; height: 96px; border-radius: 22px; }
#start h1 { margin: 0; font-size: 40px; }
#start p { margin: 0; color: var(--secondary); max-width: 460px; }

@media (max-width: 1050px) {
  #menu header { padding-right: 330px; }
  .card { width: 300px; height: 380px; }
  .card .art { height: 169px; }
  #live { width: 260px; }
}
@media (max-width: 800px) {
  #menu header { padding-right: 24px; min-height: 0; padding-top: calc(180px + var(--safe-top)); }
  #live { width: 220px; }
  .panel { min-width: 0; }
  .choice { width: 150px; }
}