/* Escena a pantalla completa: la bola en el centro, controles en las esquinas y un cajón de ajustes */
:root{
  --bg:#000; --fg:#eceef7; --dim:#8b91aa; --line:rgba(236,238,247,.15); --glass:rgba(10,11,20,.66); --accent:#a9dcff;
  --c0:#ff3b5c; --c1:#ffb020; --c2:#3dff9a; --c3:#29b6ff; --c4:#b56bff;
  --display:"Major Mono Display",ui-monospace,Menlo,monospace;
  --body:"Instrument Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:dark;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
html,body{margin:0;height:100%;background:var(--bg);color:var(--fg);font-family:var(--body);overflow:hidden;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}
#gl,#fx{position:fixed;inset:0;width:100%;height:100%;display:block}
#fx{mix-blend-mode:screen;touch-action:none}
button,select,input{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.btn{border:1px solid var(--line);background:var(--glass);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);padding:13px 22px;border-radius:999px;font-weight:600;font-size:15px}
.btn.primary{background:var(--fg);color:#000;border-color:var(--fg)}
.btn.sm{padding:8px 14px;font-size:13px;font-weight:500}
.btn[aria-pressed="true"]{background:var(--fg);color:#000;border-color:var(--fg)}

#intro{position:fixed;inset:0;z-index:8;display:flex;align-items:center;justify-content:center;padding-bottom:var(--lift,12vh);transition:opacity .8s;
  background:radial-gradient(circle at 50% calc(50% - var(--lift,12vh)/2),rgba(2,2,10,.62) 0,rgba(2,2,10,.3) min(22vh,30vw),rgba(2,2,10,0) min(38vh,52vw))}
#intro.gone{opacity:0;pointer-events:none}
.brand{margin:0;display:flex;flex-direction:column;align-items:center;font-weight:400;text-align:center;color:#fff;
  text-shadow:0 0 34px rgba(170,150,255,.85),0 0 80px rgba(120,90,255,.45)}
.brand .w1{font-family:var(--display);font-size:min(18vh,17vw);line-height:.9;letter-spacing:-.01em}
.brand .w2{font-family:var(--body);font-weight:500;text-transform:uppercase;font-size:min(3.6vh,3.6vw);letter-spacing:.55em;margin-right:-.55em;margin-top:min(2.2vh,2.2vw);color:#e3e6f7;text-shadow:0 0 18px rgba(170,150,255,.8)}
#intro .actions{position:absolute;flex-direction:row;left:0;right:0;bottom:max(36px,env(safe-area-inset-bottom));justify-content:center;padding:0 max(16px,env(safe-area-inset-left))}
.actions{display:flex;flex-wrap:wrap;gap:12px}

.ui{opacity:0;pointer-events:none;transition:opacity .8s}
.ui.on{opacity:1;pointer-events:auto}
#hud{position:fixed;z-index:3;left:max(20px,env(safe-area-inset-left));top:max(16px,env(safe-area-inset-top));pointer-events:none!important}
#big{display:flex;align-items:baseline;gap:8px;font-family:var(--display);font-size:clamp(40px,6.5vw,72px);line-height:1;transition:color .2s,opacity .5s}
#big small{font-family:var(--body);font-size:11px;font-weight:600;letter-spacing:.16em;color:var(--dim)}
#big.idle{opacity:.35}
#chips{margin-top:10px;display:flex;gap:6px;flex-wrap:wrap;min-height:24px}
#chips span{font-size:11px;letter-spacing:.12em;text-transform:uppercase;padding:4px 9px;border-radius:999px;border:1px solid var(--line);color:var(--dim)}
#chips span.on{background:var(--fg);color:#000;border-color:var(--fg)}
#chips span[hidden]{display:none}

#top{position:fixed;z-index:5;right:max(16px,env(safe-area-inset-right));top:max(16px,env(safe-area-inset-top));display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px;max-width:calc(100% - 200px)}
.seg{display:flex;border:1px solid var(--line);background:var(--glass);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-radius:999px;padding:3px}
.seg button{border:0;background:transparent;padding:6px 14px;border-radius:999px;font-size:13px;font-weight:500;color:var(--dim)}
.seg button[aria-pressed="true"]{background:var(--fg);color:#000}
#drawer{position:fixed;z-index:5;right:max(16px,env(safe-area-inset-right));top:calc(max(16px,env(safe-area-inset-top)) + 54px);width:min(320px,calc(100% - 32px));max-height:calc(100% - 140px);overflow-y:auto;
  background:rgba(10,11,20,.88);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--line);border-radius:16px;padding:18px;display:flex;flex-direction:column;gap:20px}
#drawer section{display:flex;flex-direction:column;gap:8px}
#drawer h3{margin:0 0 2px;font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);font-weight:600}
.f{display:grid;grid-template-columns:112px minmax(0,1fr);align-items:center;gap:12px;min-height:34px}
.f label,.f .lbl{font-size:13.5px}
.f select{-webkit-appearance:none;appearance:none;width:100%;background:rgba(255,255,255,.05) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%238b91aa' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 11px center;border:1px solid transparent;border-radius:9px;padding:8px 30px 8px 11px;font-size:13.5px;cursor:pointer;transition:border-color .15s}
.f select:hover{border-color:var(--line)}
.f select option{background:#11131f}
.rng{display:grid;grid-template-columns:minmax(0,1fr) 3ch;gap:10px;align-items:center}
.rng output{font-size:13px;font-variant-numeric:tabular-nums;text-align:right;color:var(--dim)}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:20px;background:transparent;margin:0;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:3px;border-radius:2px;background:rgba(255,255,255,.16)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;border-radius:50%;background:var(--fg);margin-top:-5.5px}
input[type=range]::-moz-range-track{height:3px;border-radius:2px;background:rgba(255,255,255,.16)}
input[type=range]::-moz-range-thumb{width:14px;height:14px;border:0;border-radius:50%;background:var(--fg)}
.sw{position:relative;width:38px;height:22px}
.sw input{position:absolute;inset:0;width:100%;height:100%;opacity:0;margin:0;cursor:pointer}
.sw i{position:absolute;inset:0;border-radius:999px;background:rgba(255,255,255,.14);transition:background .2s;pointer-events:none}
.sw i::after{content:"";position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:var(--fg);transition:transform .2s}
.sw input:checked+i{background:var(--accent)}
.sw input:checked+i::after{transform:translateX(16px);background:#0a0b14}
.sw input:focus-visible+i{outline:2px solid var(--accent);outline-offset:2px}
.swatches{display:flex;gap:10px}
.swatches button{width:24px;height:24px;border-radius:50%;padding:0;border:0;background:linear-gradient(135deg,var(--a),var(--b));box-shadow:0 0 0 1px var(--line)}
.swatches button[aria-checked="true"]{box-shadow:0 0 0 2px #0a0b14,0 0 0 3.5px var(--fg)}
#drawer .note{margin:-4px 0 0 124px;font-size:12px;color:var(--dim);line-height:1.4}
#drawer .acts{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,138px),1fr));gap:6px;padding-top:16px;border-top:1px solid var(--line)}
#drawer .acts .btn{width:100%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;border-radius:10px;padding:9px 8px;font-size:12.5px;font-weight:500;background:rgba(255,255,255,.05);border-color:transparent;backdrop-filter:none;-webkit-backdrop-filter:none}
#drawer .acts .btn:hover{border-color:var(--line)}
#drawer .acts .btn[aria-pressed="true"]{background:var(--fg);color:#000}

#status{position:fixed;z-index:7;left:50%;top:calc(max(16px,env(safe-area-inset-top)) + 62px);transform:translateX(-50%);font-size:14px;background:var(--glass);border:1px solid var(--line);padding:8px 16px;border-radius:999px;max-width:min(560px,calc(100% - 32px));text-align:center;transition:opacity .4s;pointer-events:none}
#status:empty{opacity:0}

#board{position:fixed;z-index:3;left:50%;transform:translateX(-50%);bottom:max(18px,env(safe-area-inset-bottom));width:min(760px,calc(100% - 32px))}
#board[hidden]{display:none}
#lane{display:block;width:100%;height:min(42vh,400px);pointer-events:none}
#lane[hidden]{display:none!important}
#keys{display:grid;grid-template-columns:repeat(8,1fr);gap:6px}
.key{position:relative;height:72px;border-radius:12px;border:1px solid var(--line);background:var(--glass);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;flex-direction:column;justify-content:flex-end;align-items:center;padding:0 2px 8px;gap:1px;touch-action:none;transition:background .08s,transform .08s,box-shadow .2s}
.key::before{content:"";position:absolute;left:10px;right:10px;top:8px;height:4px;border-radius:2px;background:var(--k)}
.key b{font-weight:600;font-size:15px}
.key small{font-size:9.5px;letter-spacing:.06em;color:var(--dim);text-transform:uppercase;white-space:nowrap;overflow:hidden;max-width:100%}
.key.on{background:var(--k);color:#0a0a12;transform:translateY(3px);box-shadow:0 0 34px var(--k)}
.key.on small{color:rgba(10,10,18,.7)}
.key.next{box-shadow:0 0 0 2px var(--k),0 0 24px var(--k)}

#legend{position:fixed;z-index:3;left:max(18px,env(safe-area-inset-left));bottom:max(16px,env(safe-area-inset-bottom));display:flex;flex-wrap:wrap;gap:6px 16px;font-size:12px;color:var(--dim);pointer-events:none!important;max-width:calc(100% - 300px)}
#legend[hidden]{display:none}
#legend span{display:flex;align-items:center;gap:6px}
#legend i{width:9px;height:9px;border-radius:50%;background:var(--k);box-shadow:0 0 10px var(--k)}
#legend b{color:var(--fg);font-weight:500}

#cam{position:fixed;z-index:3;right:max(16px,env(safe-area-inset-right));bottom:max(16px,env(safe-area-inset-bottom));width:clamp(200px,24vw,360px);aspect-ratio:16/9;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:#000;opacity:0;pointer-events:none;transition:opacity .4s}
#cam.show{opacity:1}
#cam video,#cam canvas{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transform:scaleX(-1)}
#cam video{filter:grayscale(1);opacity:.5}
body.piano #cam{bottom:calc(max(18px,env(safe-area-inset-bottom)) + 84px)}

#calib{position:fixed;inset:0;z-index:9;display:flex;align-items:center;justify-content:center;padding:16px;background:rgba(0,0,0,.35)}
#calib[hidden]{display:none}
#calib .card{width:min(520px,100%);background:rgba(10,11,20,.9);border:1px solid var(--line);border-radius:20px;padding:24px;display:flex;flex-direction:column;gap:16px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
#calib h2{margin:0;font-family:var(--display);font-weight:400;font-size:28px}
#calib p{margin:0;font-size:16px;line-height:1.45}
#calibChips{display:grid;grid-template-columns:repeat(8,1fr);gap:5px}
#calibChips span{display:flex;flex-direction:column;align-items:center;gap:4px;font-size:9.5px;letter-spacing:.04em;text-transform:uppercase;color:var(--dim);text-align:center}
#calibChips i{display:block;width:100%;height:30px;border-radius:8px;border:1px solid var(--line);transition:background .2s}
#calibChips span.ok i{background:var(--accent);box-shadow:0 0 16px var(--accent)}
#calibChips span.ok{color:var(--fg)}
.bar{height:4px;border-radius:2px;background:var(--line);overflow:hidden}
.bar i{display:block;height:100%;width:0;background:var(--accent);transition:width .2s}
#calib .acts{display:flex;justify-content:flex-end;gap:8px}

body.present .ui, body.present #board, body.present #legend, body.present #cam, body.present #drawer{display:none!important}
body.present{cursor:none}
@media (max-width:700px){
  #top{left:max(12px,env(safe-area-inset-left));right:max(12px,env(safe-area-inset-right));top:max(12px,env(safe-area-inset-top));max-width:none;flex-wrap:nowrap;justify-content:space-between}
  #presBtn{display:none}
  .seg button{padding:7px 9px;font-size:12.5px}
  #setBtn{padding:8px 12px}
  #hud{top:calc(max(12px,env(safe-area-inset-top)) + 58px);left:max(16px,env(safe-area-inset-left))}
  #big{font-size:44px}
  #drawer{top:calc(max(12px,env(safe-area-inset-top)) + 54px);right:max(12px,env(safe-area-inset-right));width:calc(100% - 24px);max-height:calc(100% - 90px)}
  #status{top:auto;bottom:calc(max(16px,env(safe-area-inset-bottom)) + 84px)}
  body:not(.piano) #status{bottom:calc(max(16px,env(safe-area-inset-bottom)) + 70px)}
  #legend{max-width:calc(100% - 32px);gap:6px 12px}
  #cam{display:none}
  .key{height:58px}.key small{display:none}
}
@media (prefers-reduced-motion:reduce){.ui,#intro,#cam,.key,#big{transition:none}}

#mobile{position:fixed;inset:0;z-index:10;display:flex;align-items:center;justify-content:center;overflow-y:auto;padding:max(16px,env(safe-area-inset-top)) max(16px,env(safe-area-inset-right)) max(16px,env(safe-area-inset-bottom)) max(16px,env(safe-area-inset-left));background:rgba(0,0,0,.55);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
#mobile .card{width:min(460px,100%);margin:auto;background:rgba(12,13,24,.94);border:1px solid var(--line);border-radius:22px;padding:26px 22px 18px;display:flex;flex-direction:column;gap:12px}
#mobile .mdot{width:34px;height:34px;border-radius:50%;background:radial-gradient(circle at 40% 38%,#d9b8ff,#a45cff 45%,#6b2fd6);box-shadow:0 0 28px rgba(164,92,255,.7)}
#mobile h2{margin:4px 0 0;font-size:22px;font-weight:600;letter-spacing:-.01em}
#mobile p{margin:0;font-size:15.5px;line-height:1.5;color:#d6d8e6}
#mobile p.small{font-size:13.5px;color:var(--dim)}
#mobile .mbtns{display:flex;flex-direction:column;gap:8px;margin-top:8px}
#mobile .btn{width:100%;padding:14px 18px}
#mobile .btn.link{background:transparent;border-color:transparent;color:var(--accent);font-weight:500;font-size:14px;padding:10px}

#count{position:fixed;inset:0;z-index:6;display:flex;align-items:center;justify-content:center;pointer-events:none;font-family:var(--display);font-size:clamp(120px,24vw,260px);line-height:1;color:#fff;text-shadow:0 0 40px rgba(169,140,255,.9),0 0 90px rgba(120,90,255,.6)}
#count span{display:block;animation:cnt 1s ease-out both}
#count span.go{font-family:var(--body);font-weight:600;font-size:.42em;letter-spacing:.04em}
@keyframes cnt{0%{transform:scale(1.3);opacity:0}15%{opacity:1}75%{opacity:.9}100%{transform:scale(.92);opacity:.5}}
@media (prefers-reduced-motion:reduce){#count span{animation:none}}

/* pedal y acordes solo se muestran mientras están activos */
#mPedal:not(.on),#mChord:not(.on){display:none}