:root{--bg:#05070b;--panel:#0d141d;--aqua:#20d3ae;--text:#fff;--muted:#b8c0cc;--line:rgba(255,255,255,.14)}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--bg);color:var(--text);font-family:Inter,Arial,sans-serif;overflow-x:hidden}
.game-shell{min-height:100vh;display:flex;flex-direction:column}.topbar{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;justify-content:space-between;align-items:center;padding:14px 18px;background:linear-gradient(180deg,rgba(5,7,11,.85),rgba(5,7,11,.25));backdrop-filter:blur(8px)}
.topbar a{color:var(--text);text-decoration:none;font-weight:900}.topbar span{color:var(--aqua)}
.top-actions{display:flex;gap:10px;align-items:center}.mini-btn{border:1px solid var(--line);background:rgba(255,255,255,.06);color:var(--text);border-radius:999px;padding:10px 13px;font-weight:800}
.stage{position:relative;min-height:100vh;display:grid;place-items:center;padding:78px 16px 34px}
#pad{width:min(72vh,82vw);height:min(72vh,82vw);max-width:620px;max-height:620px;border-radius:32px;border:1px solid var(--line);background:radial-gradient(circle at 50% 42%,rgba(32,211,174,.18),rgba(255,255,255,.035) 48%,rgba(255,255,255,.015));display:grid;place-items:center;position:relative;overflow:hidden;box-shadow:0 25px 100px rgba(0,0,0,.55)}
#pad::before{content:"";position:absolute;inset:12%;background-image:var(--pad-src);background-repeat:no-repeat;background-size:contain;background-position:center;filter:drop-shadow(0 18px 24px rgba(0,0,0,.45))}
#pad::after{content:"";position:absolute;inset:0;background:radial-gradient(circle,transparent 35%,rgba(0,0,0,.18))}
#cueImg{width:min(62vh,76vw);max-width:560px;filter:drop-shadow(0 20px 32px rgba(0,0,0,.55))}
#equation{position:absolute;top:110px;left:50%;transform:translateX(-50%);z-index:20;font-size:clamp(36px,9vw,88px);font-weight:900;color:var(--aqua);text-shadow:0 10px 28px rgba(0,0,0,.6);text-align:center}
#timebarH{position:fixed;left:0;bottom:0;height:8px;width:100%;background:var(--aqua);transform-origin:left center;z-index:60}
#timeHud,#targetBadge,#roundBadge{position:fixed;left:18px;bottom:18px;z-index:61;background:rgba(0,0,0,.45);border:1px solid var(--line);border-radius:999px;padding:9px 12px;font-weight:900}
#targetBadge{bottom:62px}#roundBadge{bottom:106px}.badge-row{position:fixed;right:18px;bottom:18px;z-index:61;display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}
#readyOverlay,#doneOverlay{position:fixed;inset:0;z-index:80;display:none;place-items:center;background:rgba(5,7,11,.82);font-size:clamp(46px,12vw,110px);font-weight:900;text-align:center}
#readyOverlay.show,#doneOverlay.show,#readyOverlay.active,#doneOverlay.active{display:grid}
#flash{position:fixed;inset:0;pointer-events:none;z-index:70;background:rgba(32,211,174,.25);opacity:0;transition:.12s}#flash.flash-on{opacity:1}
#reticle{position:absolute;width:74px;height:74px;border:3px solid var(--aqua);border-radius:50%;box-shadow:0 0 34px rgba(32,211,174,.45);z-index:20}
.controls{position:fixed;left:50%;bottom:42px;transform:translateX(-50%);z-index:65;display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.main-btn{border:0;background:var(--aqua);color:#03110e;border-radius:999px;padding:15px 22px;font-weight:1000;font-size:16px}.secondary-btn{border:1px solid var(--line);background:rgba(255,255,255,.08);color:var(--text);border-radius:999px;padding:14px 18px;font-weight:900}
.panel{position:fixed;right:14px;top:68px;z-index:90;width:min(360px,calc(100vw - 28px));background:rgba(13,20,29,.97);border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:0 22px 70px rgba(0,0,0,.48);display:none}
.panel.show,.panel.active,.panel.open{display:block}.panel h2{margin:0 0 12px}.panel label{display:block;color:var(--muted);font-size:13px;margin:12px 0 5px}
.panel select,.panel button{width:100%;border-radius:12px;border:1px solid var(--line);background:#071018;color:var(--text);padding:11px;font-weight:800}.panel button{cursor:pointer;margin-top:8px}
#toast,#iosRingHint,#installStatus,#installHint{position:fixed;left:50%;top:74px;transform:translateX(-50%);z-index:95;background:rgba(0,0,0,.65);border:1px solid var(--line);border-radius:999px;padding:10px 14px;color:var(--text);font-weight:800;display:none}
#toast.show,#iosRingHint.show,#installStatus.show,#installHint.show{display:block}
#levels{position:fixed;left:50%;top:82px;transform:translateX(-50%);z-index:25;display:flex;gap:8px}#levels button{border:1px solid var(--line);background:rgba(255,255,255,.08);color:#fff;border-radius:999px;padding:8px 12px;font-weight:900}
@media(max-width:700px){#pad{width:88vw;height:88vw;border-radius:24px}.controls{bottom:26px}.topbar{padding:10px 12px}.mini-btn{padding:9px 11px}.panel{top:56px}.stage{padding-top:64px}}