/* RYFT liquid glass, Buttober lettering. */
:root {
  --bg: #070608;
  --text: #f3f1ea;
  --text-2: #bdb9ad;
  --muted: #8f8b80;
  --orange: #f49d03;
  --pink: #ff64db;
  --green: #7fff8b;
  --cyan: #4cf3ff;
  --red: #ff3d2e;
  --line: rgba(243, 241, 234, .1);
  --line-strong: rgba(243, 241, 234, .22);
  --glass: rgba(18, 16, 20, .55);
  --glass-blur: blur(26px) saturate(170%);
  --glass-edge: inset 0 1px 0 rgba(255, 255, 255, .12), inset 0 0 0 1px rgba(255, 255, 255, .04);
  --shadow: 0 2px 8px rgba(0, 0, 0, .45), 0 30px 64px -20px rgba(0, 0, 0, .9);
  --gloss: linear-gradient(to bottom, rgba(255, 255, 255, .2) 0, rgba(255, 255, 255, .05) 18px, rgba(255, 255, 255, 0) 19px, rgba(0, 0, 0, .18) 100%);
  --radius: 20px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; background: var(--bg); color: var(--text); }
body { font: 15px/1.45 "Geist", system-ui, sans-serif; -webkit-font-smoothing: antialiased; user-select: none; -webkit-user-select: none; }
button { font: inherit; color: inherit; }
[hidden] { display: none !important; }

#stage { position: fixed; inset: 0; width: 100vw; height: 100vh; display: block; }
#cam { position: fixed; width: 1px; height: 1px; opacity: 0; pointer-events: none; }

.glass {
  background: var(--glass);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--line);
  box-shadow: var(--glass-edge), var(--shadow);
  border-radius: var(--radius);
}

.screen { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; padding: max(20px, env(safe-area-inset-top)) 20px max(20px, env(safe-area-inset-bottom)); overflow: auto; }
.screen.dim { background: rgba(5, 5, 7, .45); }

.btn {
  --dwell: 0;
  position: relative; overflow: hidden;
  border: 1px solid var(--line-strong); background: var(--gloss), rgba(243, 241, 234, .07); color: var(--text);
  border-radius: 99px; padding: 10px 20px; font-weight: 600; cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .18), inset 0 -1px 0 rgba(0, 0, 0, .35);
  transition: transform .12s ease, background .2s ease, border-color .2s ease;
}
.btn::after { content: ""; position: absolute; left: 0; bottom: 0; height: 3px; width: calc(var(--dwell) * 100%); background: var(--text); opacity: .9; }
.btn:hover, .btn.hot { border-color: rgba(243, 241, 234, .45); transform: translateY(-1px); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--gloss), var(--orange); color: #070608; border-color: transparent; box-shadow: inset 0 1px 0 rgba(255, 255, 255, .35), 0 1px 1px rgba(0, 0, 0, .45), 0 6px 22px -4px rgba(244, 157, 3, .55); }
.btn.primary::after { background: #070608; }
.btn.primary:hover, .btn.primary.hot { background: var(--gloss), #ffb13a; }
.btn.ghost { background: transparent; box-shadow: none; }
.btn.big { padding: 14px 28px; font-size: 17px; }
.btn:disabled { opacity: .45; cursor: default; transform: none; }

.pill { font: 500 11px/1 "JetBrains Mono", monospace; letter-spacing: .08em; text-transform: uppercase; padding: 7px 11px; border-radius: 99px; border: 1px solid var(--line-strong); color: var(--text-2); }
.pill.hot { background: var(--pink); color: #070608; border-color: transparent; }
.kicker, h3 { font: 500 11px/1.2 "JetBrains Mono", monospace; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 0; }
h2 { font: 700 26px/1.1 "Unbounded", system-ui, sans-serif; letter-spacing: -.01em; margin: 0 0 6px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.actions.col { flex-direction: column; align-items: stretch; }

/* title */
.title-card { max-width: 980px; width: 100%; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 18px; }
.logo { font-size: clamp(56px, 13vw, 156px); margin: 0; line-height: 1; }
.tag { max-width: 560px; font-size: clamp(16px, 2vw, 19px); color: var(--text-2); margin: 0; }
.moves { list-style: none; padding: 0; margin: 14px 0 0; display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; width: 100%; }
.moves li { padding: 14px 12px; border-radius: 16px; text-align: left; display: flex; flex-direction: column; gap: 4px; }
.moves b { font: 600 13px/1 "Unbounded", sans-serif; }
.moves li:nth-child(4n+1) b { color: var(--orange); } .moves li:nth-child(4n+2) b { color: var(--pink); }
.moves li:nth-child(4n+3) b { color: var(--green); } .moves li:nth-child(4n+4) b { color: var(--cyan); }
.moves span { font-size: 12.5px; color: var(--text-2); line-height: 1.35; }
.fine { font-size: 12px; color: var(--muted); margin: 0; }
@media (max-width: 860px) { .moves { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 480px) { .moves { grid-template-columns: repeat(2, 1fr); } }

/* select */
#screen-select { flex-direction: column; justify-content: flex-start; gap: 18px; }
.topbar { width: 100%; max-width: 1180px; display: flex; align-items: center; gap: 14px; }
.mini-logo { font-size: 26px; flex: 1; text-align: center; }
.select-grid { width: 100%; max-width: 1180px; display: grid; grid-template-columns: 1fr 360px; gap: 18px; align-items: start; }
.songs { display: grid; gap: 12px; }
.song {
  display: grid; grid-template-columns: 74px 1fr auto; gap: 16px; align-items: center; text-align: left;
  padding: 14px; cursor: pointer; border-radius: var(--radius);
}
.song .cover { width: 74px; height: 74px; border-radius: 14px; display: grid; place-items: center; font: 400 34px/1 "Buttober", sans-serif; color: #fff; -webkit-text-stroke: 3px #000; paint-order: stroke fill; box-shadow: inset 0 1px 0 rgba(255,255,255,.35); }
.song h4 { margin: 0 0 4px; font: 600 17px/1.2 "Unbounded", sans-serif; }
.song p { margin: 0; color: var(--text-2); font-size: 13px; }
.song .meta { font: 500 12px/1.5 "JetBrains Mono", monospace; color: var(--muted); text-align: right; }
.song.on { border-color: rgba(244, 157, 3, .7); box-shadow: var(--glass-edge), 0 0 0 1px rgba(244, 157, 3, .5), 0 20px 50px -24px rgba(244, 157, 3, .6); }
.song.upload { grid-template-columns: 74px 1fr; border-style: dashed; }
.song.upload .cover { background: rgba(243,241,234,.06); -webkit-text-stroke: 0; font: 600 30px/1 "Unbounded"; color: var(--text-2); }
.panel { padding: 20px; display: flex; flex-direction: column; gap: 12px; position: sticky; top: 0; }
.panel h3 { margin-top: 6px; display: flex; justify-content: space-between; }
.seg { display: grid; grid-template-columns: repeat(4, 1fr); padding: 4px; gap: 4px; border-radius: 99px; background: rgba(0,0,0,.35); border: 1px solid var(--line); }
.seg button { border: 0; background: transparent; padding: 9px 4px; border-radius: 99px; cursor: pointer; font-weight: 600; font-size: 13px; color: var(--text-2); }
.seg button.on { background: var(--gloss), var(--text); color: #070608; }
.toggle { display: flex; gap: 12px; align-items: flex-start; cursor: pointer; font-size: 13px; color: var(--text-2); }
.toggle b { display: block; color: var(--text); font-size: 14px; }
.toggle input { appearance: none; flex: none; width: 40px; height: 24px; border-radius: 99px; background: rgba(243,241,234,.12); position: relative; cursor: pointer; margin: 2px 0 0; border: 1px solid var(--line); transition: background .2s; }
.toggle input::after { content: ""; position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 50%; background: var(--text); transition: transform .2s; box-shadow: 0 1px 3px rgba(0,0,0,.5); }
.toggle input:checked { background: var(--orange); }
.toggle input:checked::after { transform: translateX(16px); }
input[type=range] { width: 100%; accent-color: var(--orange); }
output { color: var(--text); }
.best { font: 500 12px/1.6 "JetBrains Mono", monospace; color: var(--text-2); padding: 12px; border-radius: 14px; background: rgba(0,0,0,.25); border: 1px solid var(--line); }
.best b { color: var(--text); }
@media (max-width: 900px) { .select-grid { grid-template-columns: 1fr; } .panel { position: static; } }

/* setup */
.setup { padding: 28px; max-width: 460px; width: 100%; text-align: center; }
.sub, .hint { color: var(--text-2); margin: 0 0 16px; }
.hint { font-size: 13px; color: var(--muted); margin: 14px 0; }
.checks { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; text-align: left; }
.checks li { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 12px; background: rgba(0,0,0,.28); border: 1px solid var(--line); font-size: 14px; color: var(--text-2); }
.checks i { width: 12px; height: 12px; border-radius: 50%; background: rgba(243,241,234,.18); flex: none; box-shadow: inset 0 0 0 1px rgba(255,255,255,.1); }
.checks li.ok { color: var(--text); border-color: rgba(127,255,139,.35); }
.checks li.ok i { background: var(--green); box-shadow: 0 0 12px var(--green); }
#screen-setup { align-items: flex-end; justify-content: flex-start; }

/* loading */
.loading { padding: 26px 34px; display: flex; gap: 16px; align-items: center; }
.loading p { margin: 0; font-weight: 500; }
.spinner { width: 22px; height: 22px; border-radius: 50%; border: 3px solid rgba(243,241,234,.15); border-top-color: var(--orange); animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* hud */
#hud { position: fixed; inset: 0; pointer-events: none; }
.hud-top { position: absolute; top: max(14px, env(safe-area-inset-top)); left: 50%; transform: translateX(-50%); width: min(980px, calc(100vw - 28px)); display: grid; grid-template-columns: 1fr 1.2fr auto; gap: 22px; align-items: center; padding: 10px 18px; border-radius: 99px; }
.hud-song b { display: block; font-size: 13px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: 6px; }
.bar { height: 6px; border-radius: 99px; background: rgba(243,241,234,.12); overflow: hidden; }
.bar i { display: block; height: 100%; width: 0; background: var(--text); border-radius: inherit; transition: width .15s linear; }
.bar.hp i { background: linear-gradient(90deg, var(--pink), var(--orange)); box-shadow: 0 0 12px rgba(244,157,3,.7); }
.hud-hp span { display: block; font: 500 10px/1 "JetBrains Mono", monospace; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 7px; }
.hud-score { text-align: right; font-family: "JetBrains Mono", monospace; }
.hud-score b { display: block; font: 700 22px/1 "Unbounded", sans-serif; letter-spacing: -.01em; }
.hud-score span { font-size: 12px; color: var(--text-2); }
.hud-combo { position: absolute; left: max(22px, env(safe-area-inset-left)); bottom: max(18px, env(safe-area-inset-bottom)); font-size: clamp(40px, 6vw, 72px); }
.hud-combo span { display: inline-block; transform-origin: left bottom; }
.hud-combo span.pop { animation: pop .18s ease-out; }
@keyframes pop { from { transform: scale(1.18); } to { transform: scale(1); } }
.hud-pause { position: absolute; right: 18px; bottom: max(18px, env(safe-area-inset-bottom)); width: 46px; height: 46px; border-radius: 50%; pointer-events: auto; cursor: pointer; display: flex; gap: 5px; align-items: center; justify-content: center; }
.hud-pause i { width: 4px; height: 15px; border-radius: 2px; background: var(--text); }
.hud-body { position: absolute; right: 78px; bottom: max(18px, env(safe-area-inset-bottom)); padding: 10px 14px; display: flex; gap: 14px; align-items: center; border-radius: 16px; }
.meter { position: relative; font: 500 10px/1 "JetBrains Mono", monospace; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.meter.lift { width: 10px; height: 46px; border-radius: 99px; background: rgba(243,241,234,.12); }
.meter.lift i { position: absolute; left: 0; right: 0; bottom: 0; border-radius: 99px; background: var(--green); height: 0; }
.meter.sway { width: 110px; height: 10px; border-radius: 99px; background: rgba(243,241,234,.12); }
.meter.sway::before { content: ""; position: absolute; left: 50%; top: -3px; bottom: -3px; width: 1px; background: var(--line-strong); }
.meter.sway i { position: absolute; top: 0; bottom: 0; width: 10px; margin-left: -5px; left: 50%; border-radius: 50%; background: var(--pink); box-shadow: 0 0 10px var(--pink); }
.meter span { position: absolute; top: calc(100% + 6px); left: 50%; transform: translateX(-50%); }
.meter.lift span { top: auto; bottom: -16px; }
.hud-body p { margin: 0; font-size: 12px; color: var(--orange); max-width: 180px; }
.hud-body p:empty { display: none; }
.countdown { position: absolute; left: 50%; top: 45%; transform: translate(-50%, -50%); font-size: clamp(80px, 16vw, 200px); }
.countdown:empty { display: none; }

/* pause + results */
.pause { padding: 28px; min-width: 300px; text-align: center; }
.results { padding: 28px; width: min(720px, 100%); display: flex; flex-direction: column; gap: 22px; }
.res-head { display: flex; gap: 28px; align-items: center; }
.grade { font-size: 132px; line-height: .9; min-width: 150px; text-align: center; }
.res-score { font: 700 clamp(34px, 6vw, 52px)/1 "Unbounded", sans-serif; letter-spacing: -.02em; margin: 8px 0 6px; }
.res-acc { margin: 0 0 8px; font: 500 14px/1.3 "JetBrains Mono", monospace; color: var(--text-2); }
.res-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.res-grid div { padding: 12px; border-radius: 14px; background: rgba(0,0,0,.28); border: 1px solid var(--line); }
.res-grid b { display: block; font: 700 20px/1.1 "Unbounded", sans-serif; }
.res-grid span { font: 500 10.5px/1.2 "JetBrains Mono", monospace; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.res-grid .c300 b { color: var(--green); } .res-grid .c100 b { color: var(--cyan); } .res-grid .c50 b { color: var(--orange); } .res-grid .c0 b { color: var(--red); }
@media (max-width: 600px) { .res-grid { grid-template-columns: repeat(2, 1fr); } .res-head { flex-direction: column; text-align: center; gap: 10px; } .hud-top { grid-template-columns: 1fr auto; } .hud-hp { display: none; } }

.toast { position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%); padding: 12px 18px; border-radius: 14px; background: rgba(18,16,20,.9); border: 1px solid var(--line-strong); box-shadow: var(--shadow); max-width: min(520px, 90vw); text-align: center; z-index: 10; }

.tut { position: absolute; left: 50%; bottom: max(18px, env(safe-area-inset-bottom)); transform: translateX(-50%); width: min(520px, calc(100vw - 520px)); min-width: 300px; padding: 14px 20px 16px; text-align: center; transition: border-color .25s; }
.tut h3 { font: 700 20px/1.2 "Unbounded", sans-serif; letter-spacing: 0; text-transform: none; color: var(--text); margin: 6px 0 4px; }
.tut-text { margin: 0; color: var(--text-2); font-size: 14px; }
.tut-dots { display: flex; gap: 8px; justify-content: center; margin-top: 10px; }
.tut-dots i { width: 22px; height: 6px; border-radius: 99px; background: var(--line-strong); transition: background .2s; }
.tut-dots i.on { background: var(--green); box-shadow: 0 0 12px rgba(127, 255, 139, .6); }
.tut.passed { border-color: rgba(127, 255, 139, .55); }
.tut.passed h3 { color: var(--green); }
#screen-tutdone h2 { font-size: clamp(34px, 6vw, 56px); margin: 10px 0 6px; }
#screen-tutdone .sub { color: var(--text-2); margin: 0 0 20px; }
.btn.glow { border-color: rgba(255, 100, 219, .6); box-shadow: 0 0 0 1px rgba(255, 100, 219, .25), 0 6px 26px -6px rgba(255, 100, 219, .6); }
#tutorial { width: 100%; margin-bottom: 10px; }
@media (max-width: 900px) { .tut { width: calc(100vw - 28px); bottom: 84px; } }

#pointers { position: fixed; inset: 0; pointer-events: none; z-index: 50; }
.pointer { position: absolute; left: 0; top: 0; width: 0; height: 0; transition: transform .05s linear; --p: 0; }
.pointer i { position: absolute; left: -26px; top: -26px; width: 52px; height: 52px; border-radius: 50%; border: 3px solid #fff; background: rgba(244, 157, 3, .08); box-shadow: 0 0 0 2px rgba(0, 0, 0, .55), 0 0 24px rgba(244, 157, 3, .8); transition: transform .15s, background .15s, border-color .15s; }
.pointer b { position: absolute; left: -33px; top: -33px; width: 66px; height: 66px; border-radius: 50%; background: conic-gradient(var(--green) calc(var(--p) * 360deg), transparent 0); -webkit-mask: radial-gradient(circle, transparent 28px, #000 29px); mask: radial-gradient(circle, transparent 28px, #000 29px); }
.pointer::after { content: ""; position: absolute; left: -6px; top: -6px; width: 12px; height: 12px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 2px #fff; }
.pointer.over i { border-color: var(--green); background: transparent; transform: scale(1.12); }
.pointer.down i { background: rgba(244, 157, 3, .7); transform: scale(.8); }
.pointer.clicked i { animation: pointer-click .35s ease-out; }
@keyframes pointer-click { 0% { transform: scale(.7); background: var(--green); } 100% { transform: scale(1.12); } }

.hand.hot { outline: 3px solid var(--green); outline-offset: 3px; box-shadow: 0 0 0 1px rgba(127, 255, 139, .4), 0 0 32px -4px rgba(127, 255, 139, .7); }
.seg button.hand.hot { outline-offset: 1px; }
.toggle.hot { border-radius: 12px; background: rgba(127, 255, 139, .07); }
.toggle { padding: 6px; margin: -6px; }
.pointer span { position: absolute; left: 40px; top: -14px; padding: 4px 12px; border-radius: 99px; white-space: nowrap; font: 600 14px/20px "Geist", sans-serif; color: #070608; background: var(--green); box-shadow: 0 4px 18px -4px rgba(127, 255, 139, .8); }
.pointer span:empty { display: none; }
.pointer.flip span { left: auto; right: 40px; }
.scroll-hint { position: fixed; left: 50%; bottom: 12px; transform: translateX(-50%); z-index: 40; padding: 8px 16px; border-radius: 99px; font-size: 13px; color: var(--text-2); pointer-events: none; }