:root{
  --clr-bg:#0A0A0F;--clr-bg-alt:#0E0E14;--clr-surface:#12121A;--clr-surface-hover:#1A1A24;
  --clr-text:#C7C7CC;--clr-heading:#F5F5F7;--clr-muted:#8E8E93;--clr-faint:#78787D;
  --clr-border:rgba(255,255,255,.06);--clr-border-hover:rgba(255,255,255,.1);
  --clr-accent:#D4A574;--clr-accent2:#8B9D83;--clr-danger:#C96A6A;
}
*{margin:0;padding:0;box-sizing:border-box;user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent}
html,body{width:100%;height:100%;overflow:hidden;touch-action:none}
body{background:var(--clr-bg);color:var(--clr-text);font-family:'Inter',system-ui,-apple-system,sans-serif;display:flex;justify-content:center}
.hidden{display:none!important}
.noise{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:60;opacity:.025;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E")}
.grid-overlay{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0;background-image:linear-gradient(var(--clr-border) 1px,transparent 1px),linear-gradient(90deg,var(--clr-border) 1px,transparent 1px);background-size:60px 60px}
#app{width:100%;max-width:440px;height:100vh;height:100dvh;display:flex;flex-direction:column;position:relative;z-index:1;background:var(--clr-bg)}
/* Topbar */
#topbar{flex-shrink:0;display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--clr-border);background:rgba(10,10,15,.7);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
#topbar .back{display:inline-flex;align-items:center;gap:6px;color:var(--clr-muted);text-decoration:none;font-size:.8rem;letter-spacing:.5px;transition:color .25s}
#topbar .back:hover{color:var(--clr-heading)}
#topbar .brand{font-size:.65rem;font-weight:600;letter-spacing:2.5px;text-transform:uppercase;color:var(--clr-faint)}
/* Welcome */
#welcome{flex:1;min-height:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:13px;padding:20px;text-align:center;overflow:auto}
.w-badge{display:inline-flex;padding:6px 16px;border:1px solid var(--clr-border);border-radius:20px;font-size:.62rem;color:var(--clr-muted);letter-spacing:2.5px;text-transform:uppercase;line-height:1}
#welcome h1{font-size:2.2rem;font-weight:600;letter-spacing:-.02em;color:var(--clr-heading)}
.tet-row{display:flex;gap:7px;margin:1px 0}
.tet-row i{width:14px;height:14px;border-radius:4px;display:block;box-shadow:0 0 10px rgba(255,255,255,.14)}
#welcome p{color:var(--clr-muted);max-width:330px;line-height:1.65;font-size:.88rem}
.w-legend{display:flex;flex-direction:column;gap:6px;align-items:flex-start;padding:12px 16px;border:1px solid var(--clr-border);border-radius:12px;background:var(--clr-surface)}
.w-legend span{font-size:.73rem;color:var(--clr-muted);display:inline-flex;align-items:center;gap:8px}
.w-legend b{color:var(--clr-heading);font-weight:600}
kbd{display:inline-block;min-width:18px;padding:2px 6px;border-radius:5px;border:1px solid var(--clr-border-hover);background:var(--clr-surface-hover);color:var(--clr-heading);font-family:inherit;font-size:.64rem;font-weight:600;text-align:center;line-height:1.3}
.w-records{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}
.w-rec{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:10px;background:var(--clr-surface);border:1px solid var(--clr-border);font-size:.76rem;color:var(--clr-text)}
.w-rec b{color:var(--clr-accent);font-variant-numeric:tabular-nums}
.w-modes{display:flex;flex-direction:column;gap:9px;width:100%;max-width:280px;margin-top:4px}
#btn-marathon{padding:14px 24px;border:none;border-radius:12px;background:var(--clr-accent);color:#14100B;font-family:inherit;font-size:1rem;font-weight:700;letter-spacing:.5px;cursor:pointer;transition:filter .2s,transform .1s}
#btn-marathon:hover{filter:brightness(1.08)}
#btn-marathon:active{transform:translateY(1px)}
#btn-sprint{padding:12px 24px;border:1px solid var(--clr-border-hover);border-radius:12px;background:var(--clr-surface);color:var(--clr-heading);font-family:inherit;font-size:.88rem;font-weight:600;letter-spacing:.3px;cursor:pointer;transition:background .2s,border-color .2s}
#btn-sprint:hover{background:var(--clr-surface-hover);border-color:rgba(212,165,116,.45)}
.w-hint{font-size:.68rem;color:var(--clr-faint);line-height:1.6;max-width:320px}
.w-hint kbd{font-size:.58rem}
/* Game */
#game{display:flex;flex-direction:column;flex:1;overflow:hidden}
#stats{flex-shrink:0;display:grid;grid-template-columns:repeat(5,1fr);padding:9px 6px;background:var(--clr-surface);border-bottom:1px solid var(--clr-border)}
.stat{display:flex;flex-direction:column;align-items:center;gap:2px;padding:2px 3px;border-left:1px solid var(--clr-border);min-width:0}
.stat:first-child{border-left:none}
.stat-label{font-size:.54rem;letter-spacing:1.3px;text-transform:uppercase;color:var(--clr-faint);white-space:nowrap}
.stat-value{font-size:.86rem;font-weight:600;color:var(--clr-heading);font-variant-numeric:tabular-nums;white-space:nowrap}
.stat-value.gold{color:var(--clr-accent)}
#progress-wrap{height:3px;background:var(--clr-bg-alt);overflow:hidden;flex-shrink:0}
#progress-fill{height:100%;background:linear-gradient(90deg,var(--clr-accent),#E8C9A0);width:0%;transition:width .3s}
/* Strip: hold + next */
#strip{flex-shrink:0;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 14px}
.strip-box{display:flex;flex-direction:column;align-items:center;gap:3px;min-width:0}
.strip-label{font-size:.55rem;letter-spacing:1.6px;text-transform:uppercase;color:var(--clr-faint)}
.strip-box canvas{display:block;background:var(--clr-bg-alt);border:1px solid var(--clr-border);border-radius:8px}
#mode-chip{padding:4px 12px;border-radius:14px;border:1px solid var(--clr-border);font-size:.58rem;letter-spacing:1.6px;text-transform:uppercase;color:var(--clr-muted);background:var(--clr-surface)}
#mode-chip.sprint{color:var(--clr-accent);border-color:rgba(212,165,116,.4)}
/* Board */
#canvas-wrap{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;padding:8px 12px;position:relative}
#gc{display:block;border-radius:12px;background:var(--clr-bg-alt);border:1px solid var(--clr-border);box-shadow:0 12px 40px rgba(0,0,0,.45)}
#gc.shake{animation:shk .18s ease}
#gc.shake-big{animation:shkb .3s ease}
@keyframes shk{0%,100%{transform:translate(0,0)}30%{transform:translate(0,4px)}60%{transform:translate(0,-2px)}}
@keyframes shkb{0%,100%{transform:translate(0,0)}20%{transform:translate(-5px,6px)}40%{transform:translate(5px,-4px)}60%{transform:translate(-4px,3px)}80%{transform:translate(3px,-2px)}}
#fx-banner{position:absolute;left:50%;top:32%;transform:translate(-50%,-50%);pointer-events:none;text-align:center;font-weight:800;font-size:1.45rem;letter-spacing:2px;color:#F5D9A8;text-shadow:0 2px 18px rgba(212,165,116,.55),0 0 4px rgba(255,255,255,.25);z-index:5;opacity:0;white-space:nowrap}
#fx-banner small{display:block;font-size:.6rem;font-weight:600;letter-spacing:1.5px;color:var(--clr-muted);margin-top:4px;text-transform:uppercase}
#fx-banner.pop{animation:fxpop 1s ease forwards}
@keyframes fxpop{0%{opacity:0;transform:translate(-50%,-50%) scale(.5)}16%{opacity:1;transform:translate(-50%,-50%) scale(1.12)}55%{opacity:1;transform:translate(-50%,-50%) scale(1)}100%{opacity:0;transform:translate(-50%,-50%) scale(1.06)}}
/* Touch controls */
#touch{flex-shrink:0;display:none;gap:6px;padding:8px 10px calc(8px + env(safe-area-inset-bottom));border-top:1px solid var(--clr-border);background:rgba(10,10,15,.6)}
#touch button{flex:1;height:52px;border-radius:11px;border:1px solid var(--clr-border);background:var(--clr-surface);color:var(--clr-heading);font-family:inherit;font-size:1.15rem;font-weight:600;cursor:pointer;transition:background .15s}
#touch button:active{background:var(--clr-surface-hover);transform:translateY(1px)}
#touch .t-wide{flex:1.35}
@media (pointer:coarse){#touch{display:flex}}
/* Bottom bar */
#bottom{flex-shrink:0;display:flex;gap:8px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));border-top:1px solid var(--clr-border);background:rgba(10,10,15,.6)}
@media (pointer:coarse){#bottom{padding-top:8px}}
#bottom button{flex:1;padding:10px 12px;border-radius:10px;border:1px solid var(--clr-border);background:var(--clr-surface);color:var(--clr-text);font-family:inherit;font-size:.8rem;font-weight:500;letter-spacing:.3px;cursor:pointer;transition:background .25s,border-color .25s,color .25s}
#bottom button:hover{background:var(--clr-surface-hover);border-color:var(--clr-border-hover);color:var(--clr-heading)}
#bottom button:active{transform:translateY(1px)}
#btn-sound{flex:0 0 46px!important}
/* Modal */
#modal{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;z-index:50;background:rgba(5,5,8,.8);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);padding:24px}
.modal-card{width:100%;max-width:320px;background:var(--clr-surface);border:1px solid var(--clr-border-hover);border-radius:16px;padding:26px 24px;display:flex;flex-direction:column;align-items:center;gap:9px;text-align:center;box-shadow:0 24px 80px rgba(0,0,0,.6)}
#modal-title{font-size:1.3rem;font-weight:600;color:var(--clr-heading)}
#modal-sub{font-size:.86rem;color:var(--clr-muted);line-height:1.65}
#modal-sub b{color:var(--clr-accent);font-variant-numeric:tabular-nums}
.new-record{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:14px;background:rgba(212,165,116,.12);border:1px solid rgba(212,165,116,.4);color:var(--clr-accent);font-size:.68rem;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;animation:rpulse 1.2s ease-in-out infinite}
@keyframes rpulse{0%,100%{filter:brightness(1)}50%{filter:brightness(1.35)}}
.modal-actions{display:flex;gap:8px;width:100%;margin-top:8px}
#modal-btn,#modal-btn2{flex:1;padding:12px 16px;border-radius:10px;border:1px solid transparent;font-family:inherit;font-size:.9rem;font-weight:600;cursor:pointer;transition:filter .2s}
#modal-btn{background:var(--clr-accent);color:#14100B}
#modal-btn2{background:transparent;border-color:var(--clr-border-hover);color:var(--clr-muted)}
#modal-btn:active,#modal-btn2:active{transform:translateY(1px)}
#modal-btn:hover{filter:brightness(1.08)}
#modal-btn2:hover{color:var(--clr-heading);border-color:var(--clr-border-hover)}
.modal-over .modal-card{border-top:2px solid var(--clr-danger)}
.modal-over #modal-btn{background:var(--clr-danger);color:#170D0D}
.modal-win .modal-card{border-top:2px solid var(--clr-accent2)}
.modal-win #modal-btn{background:var(--clr-accent2);color:#0E1410}
.modal-pause .modal-card{border-top:2px solid var(--clr-accent)}