:root { --cyan: #27f2ff; --mag: #ff2ed9; --pur: #9e4dff; --ink: #05020c; }
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; background: var(--ink); color: #e8f6ff;
  font-family: "Segoe UI", "Trebuchet MS", system-ui, sans-serif; user-select: none; }
#muse-canvas { position: fixed; inset: 0; width: 100vw; height: 100vh; display: block; cursor: crosshair; }
.lbl { font-size: 11px; letter-spacing: .25em; color: #9fdcff; opacity: .8; }
#hud { position: fixed; inset: 0; pointer-events: none; display: none; }
#hud.show { display: block; }
#hud-tl { position: absolute; left: 22px; top: 16px; }
#hud-score { font-size: 38px; font-weight: 800; color: #fff; text-shadow: 0 0 12px var(--cyan), 0 0 2px #000; letter-spacing: .04em; }
#hud-mult { font-size: 20px; font-weight: 800; color: var(--mag); text-shadow: 0 0 10px var(--mag); }
#hud-tc { position: absolute; left: 0; right: 0; top: 18px; text-align: center; }
#hud-wave { display: inline-block; font-size: 22px; font-weight: 800; letter-spacing: .3em; color: #fff; text-shadow: 0 0 12px var(--pur), 0 0 22px var(--mag); }
#hud-tr { position: absolute; right: 22px; top: 22px; font-size: 13px; color: #bfefff; text-shadow: 0 0 6px #000; display: flex; align-items: center; gap: 10px; }
#hud-beat { width: 14px; height: 14px; border-radius: 50%; background: var(--mag); box-shadow: 0 0 14px var(--mag); display: inline-block; }
#hud-bl { position: absolute; left: 22px; bottom: 22px; width: 300px; }
#hud-hp { margin-top: 6px; height: 14px; border: 1px solid rgba(39,242,255,.6); border-radius: 3px; background: rgba(10,0,30,.6); box-shadow: 0 0 10px rgba(39,242,255,.35); }
#hud-hpfill { height: 100%; width: 100%; background: linear-gradient(90deg, var(--cyan), #9ffcff); box-shadow: 0 0 12px var(--cyan); transition: width .12s; }
#hud-hpfill.low { background: linear-gradient(90deg, #ff2e5b, var(--mag)); box-shadow: 0 0 14px #ff2e5b; }
#hud-br { position: absolute; right: 22px; bottom: 18px; font-size: 11px; color: #8fb6d8; opacity: .75; }
#crosshair { position: absolute; left: 50%; top: 50%; width: 22px; height: 22px; margin: -11px 0 0 -11px; border: 2px solid rgba(39,242,255,.85); border-radius: 50%; box-shadow: 0 0 8px var(--cyan); }
#crosshair::after { content: ''; position: absolute; left: 8px; top: 8px; width: 2px; height: 2px; background: #fff; box-shadow: 0 0 4px #fff; }
#hitmark { position: absolute; left: 50%; top: 50%; width: 40px; height: 40px; margin: -20px 0 0 -20px; line-height: 40px; text-align: center; font-size: 30px; font-weight: 900; opacity: 0; transition: opacity .1s, transform .1s; }
#hitmark.show { opacity: 1; }
#hitmark.hit { color: var(--mag); text-shadow: 0 0 10px var(--mag); transform: scale(1.1); }
#hitmark.beat { color: #fff; text-shadow: 0 0 14px var(--cyan), 0 0 24px var(--cyan); transform: scale(1.5); }
#hud-onbeat { position: absolute; left: 50%; top: calc(50% + 34px); transform: translateX(-50%); font-size: 13px; font-weight: 800; letter-spacing: .3em; color: #fff; text-shadow: 0 0 10px var(--cyan); opacity: 0; transition: opacity .08s; }
#bossbar { position: fixed; left: 50%; top: 58px; width: min(520px, 70vw); transform: translateX(-50%); display: none; pointer-events: none; text-align: center; }
#bossbar.show { display: block; }
#bosstrack { margin-top: 4px; height: 10px; border: 1px solid rgba(255,214,90,.7); background: rgba(30,10,0,.6); }
#bossfill { height: 100%; width: 100%; background: linear-gradient(90deg, #ffd65a, var(--mag)); box-shadow: 0 0 14px #ffd65a; }
#banner { position: fixed; left: 0; right: 0; top: 30%; text-align: center; pointer-events: none; opacity: 0; transform: scale(.9); transition: opacity .2s, transform .2s; }
#banner.show { opacity: 1; transform: scale(1); }
#banner-main { font-size: 64px; font-weight: 900; letter-spacing: .2em; color: #fff; text-shadow: 0 0 18px var(--mag), 0 0 40px var(--pur), 0 0 3px #000; }
#banner-sub { margin-top: 6px; font-size: 16px; letter-spacing: .15em; color: #bdf6ff; text-shadow: 0 0 8px var(--cyan); }
#vignette { position: fixed; inset: 0; pointer-events: none; opacity: 0; background: radial-gradient(ellipse at center, rgba(0,0,0,0) 45%, rgba(255,20,80,.55) 100%); }
#dropflash { position: fixed; inset: 0; pointer-events: none; opacity: 0; background: radial-gradient(ellipse at center, rgba(255,80,230,.35), rgba(120,40,255,.15) 60%, rgba(0,0,0,0)); mix-blend-mode: screen; }
.overlay { position: fixed; inset: 0; display: none; align-items: center; justify-content: center; background: radial-gradient(ellipse at center, rgba(20,0,40,.55), rgba(3,0,10,.88)); z-index: 10; }
.overlay.show { display: flex; }
.panel { width: min(720px, 94vw); max-height: 96vh; overflow-y: auto; padding: 26px 30px; text-align: center; border: 1px solid rgba(39,242,255,.35); border-radius: 14px; background: rgba(8,2,22,.78); box-shadow: 0 0 40px rgba(158,77,255,.25), inset 0 0 30px rgba(39,242,255,.06); }
.panel.small { width: min(460px, 94vw); }
.title { margin: 0; font-size: 54px; line-height: 1.0; font-weight: 900; letter-spacing: .22em; color: #fff; text-shadow: 0 0 10px var(--cyan), 0 0 30px var(--cyan); }
.title span { display: inline-block; margin-top: 6px; font-size: 40px; color: #fff; text-shadow: 0 0 10px var(--mag), 0 0 32px var(--mag), 0 0 60px var(--pur); }
.title.go { font-size: 46px; text-shadow: 0 0 12px var(--mag), 0 0 34px var(--mag); }
.tag { color: #a9d8ff; letter-spacing: .12em; font-size: 13px; margin: 10px 0 14px; }
h2 { font-size: 12px; letter-spacing: .3em; color: #9fdcff; margin: 16px 0 8px; font-weight: 600; }
.big2 { font-size: 30px; color: #fff; text-shadow: 0 0 12px var(--cyan); }
#tracks { display: grid; gap: 8px; text-align: left; }
.track { pointer-events: auto; display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; padding: 10px 14px; border-radius: 10px; border: 1px solid rgba(158,77,255,.35); background: rgba(20,6,46,.65); color: #eaf7ff; cursor: pointer; font: inherit; text-align: left; }
.track:hover { border-color: rgba(39,242,255,.7); }
.track.sel { border-color: var(--cyan); box-shadow: 0 0 16px rgba(39,242,255,.35), inset 0 0 12px rgba(39,242,255,.12); }
.track .tn { font-weight: 800; letter-spacing: .06em; font-size: 16px; }
.track .tm { font-size: 12px; color: #ff9cf0; align-self: center; }
.track .td { grid-column: 1 / 3; font-size: 12px; color: #9fbfdc; }
.btn { pointer-events: auto; margin-top: 16px; padding: 12px 34px; border-radius: 999px; border: 1px solid var(--cyan); background: linear-gradient(90deg, rgba(39,242,255,.25), rgba(255,46,217,.25)); color: #fff; font: inherit; font-weight: 900; letter-spacing: .3em; cursor: pointer; text-shadow: 0 0 8px var(--cyan); box-shadow: 0 0 18px rgba(39,242,255,.35); }
.btn:hover { box-shadow: 0 0 28px rgba(255,46,217,.55); }
.btn:disabled { opacity: .5; cursor: wait; }
.btn.big { font-size: 20px; }
.btn.ghost { border-color: rgba(158,77,255,.6); background: transparent; margin-left: 10px; }
#start-msg { min-height: 18px; margin-top: 8px; font-size: 13px; color: #ffd0f6; }
.how { margin-top: 10px; font-size: 12px; line-height: 1.7; color: #9fbfdc; }
.how b { color: #e7f8ff; }
#best, #go-best { margin-top: 8px; color: #ff9cf0; letter-spacing: .2em; font-size: 13px; }
#go-score { font-size: 56px; font-weight: 900; color: #fff; text-shadow: 0 0 14px var(--cyan); margin-top: 10px; }
#go-stats { margin-top: 8px; color: #a9d8ff; font-size: 13px; }
.credit { margin-top: 18px; font-size: 11px; letter-spacing: .12em; color: #7f93b8; }

#audio-msg { position: fixed; left: 50%; bottom: 64px; transform: translateX(-50%); max-width: min(760px, 92vw); display: none; z-index: 20;
  padding: 10px 14px; border-radius: 10px; border: 1px solid rgba(255,214,90,.7); background: rgba(30,8,10,.85); color: #ffe6a8; font-size: 13px; line-height: 1.45; text-align: center; box-shadow: 0 0 18px rgba(255,120,60,.35); }
#audio-msg.show { display: block; }
.mini { margin-left: 8px; padding: 4px 10px; border-radius: 999px; border: 1px solid #ffd65a; background: rgba(255,214,90,.15); color: #fff; font: inherit; font-size: 11px; font-weight: 800; letter-spacing: .15em; cursor: pointer; }
.mini.ghost { border-color: rgba(255,255,255,.35); background: transparent; }
#file-note { display: none; margin: 10px auto 0; max-width: 560px; padding: 8px 12px; border-radius: 8px; border: 1px dashed rgba(255,214,90,.6); color: #ffe6a8; font-size: 12px; line-height: 1.5; }
#file-note.show { display: block; }