:root{color-scheme:dark;--bg:#05090b;--panel:#030809;--line:#1b3927;--green:#48db82;--bright:#a1ffb9;--muted:#75a883;--yellow:#d8d85a;--red:#ff6273;--a:#48d9df;--s:#20d69a;--d:#ae63ed}
*{box-sizing:border-box}[hidden]{display:none!important}
body{margin:0;min-height:100vh;background:radial-gradient(ellipse at 50% 25%,#0b1b11,#05090b 70%);color:#d9f4df;font:14px ui-monospace,SFMono-Regular,Consolas,monospace;padding:14px;display:grid;place-items:center;user-select:none}
.app{width:min(100%,832px);min-height:min(72vh,608px);border:1px solid #15242a;background:#030809;padding:clamp(12px,2.6vw,26px);display:flex;flex-direction:column;gap:14px;position:relative}
.game-nav{position:relative;z-index:4;display:flex;align-items:center;justify-content:flex-start;gap:12px;padding:7px 10px;border:1px solid var(--line);background:#06100b}.nav-label{color:var(--green);font-size:10px;font-weight:bold;letter-spacing:.15em}.game-select{width:min(260px,65%);appearance:none;border:1px solid #285039;background:#0a1b10;color:var(--bright);font:10px ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:.08em;padding:8px 26px 8px 10px;cursor:pointer}.game-select:focus-visible{outline:2px solid var(--green);outline-offset:2px}.game-select option{background:#07100f;color:#d9f4df}
header{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:0 0 12px;letter-spacing:.12em}.brand{font-size:clamp(13px,2.2vw,18px);font-weight:bold;color:var(--green)}.status{font-size:10px;color:var(--yellow);letter-spacing:.16em}.info{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:10px;letter-spacing:.1em}.info b{color:var(--bright)}
.tracks{display:grid;grid-template-rows:repeat(3,minmax(52px,1fr));flex:1;min-height:248px;border:1px solid #172b21;background:#030708}.track{position:relative;overflow:hidden;min-height:0;background:linear-gradient(90deg,#07100c,#030708 24%,#030708);transition:box-shadow .1s}.track.hit-feedback{box-shadow:inset 0 0 0 2px var(--green),inset 0 0 22px #48db8235}.track.miss-feedback{box-shadow:inset 0 0 0 2px var(--red),inset 0 0 22px #ff627335}.track+.track{border-top:1px solid #29312e}.track:after{content:"";position:absolute;left:0;right:0;top:50%;border-top:1px solid #25312b;pointer-events:none}.track-a{--track:var(--a)}.track-s{--track:var(--s)}.track-d{--track:var(--d)}.track-label{position:absolute;z-index:2;left:10px;top:50%;transform:translateY(-50%);color:#91a397;font-size:9px;letter-spacing:.1em}.lane-key{position:absolute;z-index:3;right:9px;top:50%;transform:translateY(-50%);width:29px;height:29px;display:grid;place-items:center;background:#e8efea;color:#07100c;border:2px solid var(--track);font-weight:bold;font-size:13px;box-shadow:0 0 0 3px #05090b}.hit-zone{position:absolute;z-index:1;left:calc(10% - 20.5px);top:0;bottom:0;width:41px;border-left:1px solid var(--track);border-right:1px solid var(--track);background:color-mix(in srgb,var(--track) 9%,transparent);pointer-events:none}.note{position:absolute;z-index:2;top:50%;width:34px;height:34px;transform:translate(-50%,-50%) rotate(45deg);border:1px solid var(--track);background:#06100c;box-shadow:0 0 10px color-mix(in srgb,var(--track) 20%,transparent)}.note.hit{background:var(--track);box-shadow:0 0 17px var(--track);transition:opacity .14s,transform .14s;opacity:0;transform:translate(-50%,-50%) rotate(45deg) scale(1.55)}.note.missed{border-color:var(--red);background:#541922;opacity:.5;transition:opacity .22s}
.hud{display:grid;grid-template-columns:auto auto auto minmax(80px,1fr);align-items:center;gap:clamp(8px,2vw,20px);color:var(--muted);font-size:10px;letter-spacing:.07em}.hud b{color:var(--bright)}.meter{height:11px;border:1px solid #285039;background:#07100e;overflow:hidden}.meter span{display:block;height:100%;width:0;background:linear-gradient(90deg,#20d69a,#62ff91);transition:width .12s}.meter-label{display:none}.controls{color:var(--muted);font-size:10px;letter-spacing:.1em;text-align:center}.controls b{color:var(--bright)}
.overlay{position:absolute;inset:0;background:#020607ef;display:grid;place-items:center;padding:18px;z-index:4}.card{width:min(100%,460px);background:#07100f;border:1px solid #28613c;padding:28px;text-align:center;box-shadow:0 0 40px #42ff8812}.eyebrow{font-size:10px;color:var(--green);letter-spacing:.24em}h1{font-size:clamp(23px,5vw,34px);margin:14px 0;letter-spacing:.06em;color:#d7ffe1}p{font-size:13px;color:#8bb79a;line-height:1.65;margin:0 0 22px}.go{background:var(--green);border:0;color:#041008;font:bold 12px ui-monospace,monospace;letter-spacing:.14em;padding:13px 24px;cursor:pointer}.overlay.result-success{background:rgba(2,15,7,.93)}.overlay.result-failure{background:rgba(20,3,6,.94)}.overlay.result-success .card{border-color:var(--green);box-shadow:0 0 0 2px #48db8240,0 0 56px #48db8230}.overlay.result-failure .card{border-color:var(--red);box-shadow:0 0 0 2px #ff627340,0 0 56px #ff627330}.overlay.result-success .card:before,.overlay.result-failure .card:before{display:block;padding:9px 12px;font-size:12px;font-weight:800;letter-spacing:.18em;margin-bottom:4px}.overlay.result-success .card:before{content:"✓  SUCCESS";color:var(--bright);background:#123b25;border:1px solid var(--green)}.overlay.result-failure .card:before{content:"✕  FAILED";color:#ffc0c6;background:#401319;border:1px solid var(--red)}.overlay.result-success .go{background:#62ff91}.overlay.result-failure .go{background:var(--red);color:#190408}
@media(max-width:560px){body{padding:5px}.app{min-height:min(76vh,608px);padding:9px;gap:10px}.tracks{min-height:209px;grid-template-rows:repeat(3,minmax(52px,1fr))}.track-label{left:6px;font-size:8px}.lane-key{right:6px;width:25px;height:25px}.hit-zone{left:calc(10% - 18px);width:36px}.hud{grid-template-columns:auto auto auto minmax(40px,1fr);gap:7px;font-size:9px}.controls{font-size:9px}}
.home-link{display:inline-flex;align-items:center;justify-content:center;white-space:nowrap;border:1px solid #285039;background:#0a1b10;color:var(--bright);font:10px ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:.08em;padding:8px 10px;text-decoration:none;cursor:pointer}.home-link:hover,.home-link:focus-visible{border-color:var(--green);background:#102118;outline:none}
.game-nav .nav-label{margin-right:auto}
.hud{font-size:11px}
@media(max-width:560px){.hud{font-size:10px}}

.tracks{background:#090a0c;border-color:#202327}
.track{background:#090a0c}
.track+.track,.track:after{border-top-color:#292c30}
.note{background:#090a0c;box-shadow:0 0 7px color-mix(in srgb,var(--track) 14%,transparent)}