:root{--void: #07090f;--panel: #0e1420;--frame: #1a2436;--ink: #e8eef8;--muted: #8b9bb4;--amber: #ffb020;--cyan: #2de2e6;--rose: #ff4d6d;--lime: #b8f229;--violet: #7c5cff;--glow: color-mix(in oklab, var(--cyan) 55%, white);--font-display: "Orbitron", sans-serif;--font-ui: "Space Grotesk", system-ui, sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body{min-height:100%;background:var(--void);color:var(--ink);font-family:var(--font-ui);overflow-x:hidden}body{min-height:100dvh}#app{position:relative;min-height:100dvh;padding:1.25rem clamp(1rem,3vw,2.5rem) 2rem;display:flex;flex-direction:column;gap:1.25rem}.ambient{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:0;overflow:hidden}.orb{position:absolute;width:42vmax;height:42vmax;border-radius:50%;filter:blur(80px);opacity:.28}.orb-a{top:-12vmax;left:-8vmax;background:radial-gradient(circle,#1f6fff 0%,transparent 68%)}.orb-b{right:-10vmax;bottom:-14vmax;background:radial-gradient(circle,#ff7a18 0%,transparent 70%);opacity:.22}.grid-floor{position:absolute;top:35%;right:0;bottom:0;left:0;background-image:linear-gradient(transparent 0 96%,color-mix(in oklab,var(--cyan) 18%,transparent)),linear-gradient(90deg,transparent 0 96%,color-mix(in oklab,var(--cyan) 12%,transparent) 100%);background-size:48px 48px;-webkit-mask-image:linear-gradient(to top,black,transparent 75%);mask-image:linear-gradient(to top,black,transparent 75%);opacity:.35;transform:perspective(600px) rotateX(58deg) scale(1.4);transform-origin:center top}.topbar,.stage{position:relative;z-index:1}.topbar{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:1rem 2rem}.brand{display:flex;align-items:center;gap:.85rem}.brand-mark{color:var(--amber);font-size:1.5rem;filter:drop-shadow(0 0 12px color-mix(in oklab,var(--amber) 70%,transparent));animation:pulse-mark 2.4s ease-in-out infinite}.brand h1{font-family:var(--font-display);font-weight:900;letter-spacing:.18em;font-size:clamp(1.1rem,2.4vw,1.55rem)}.brand p{color:var(--muted);font-size:.78rem;letter-spacing:.22em;text-transform:uppercase;margin-top:.2rem}.hud-meters{display:flex;flex-wrap:wrap;gap:.75rem}.meter{min-width:6.5rem;padding:.55rem .85rem;background:color-mix(in oklab,var(--panel) 88%,transparent);border:1px solid color-mix(in oklab,var(--cyan) 22%,transparent);border-radius:4px}.meter span{display:block;font-size:.68rem;letter-spacing:.16em;color:var(--muted)}.meter strong{font-family:var(--font-display);font-size:1.2rem;font-weight:700;color:var(--ink)}.meter.combo{border-color:color-mix(in oklab,var(--rose) 55%,transparent);box-shadow:0 0 24px color-mix(in oklab,var(--rose) 28%,transparent)}.meter.combo strong{color:var(--rose)}.stage{flex:1;display:grid;grid-template-columns:minmax(120px,160px) minmax(280px,340px) minmax(120px,160px);gap:1.25rem;align-items:start;justify-content:center}.panel{background:color-mix(in oklab,var(--panel) 92%,transparent);border:1px solid color-mix(in oklab,white 8%,transparent);border-radius:6px;padding:.9rem}.panel h2{font-family:var(--font-display);font-size:.72rem;letter-spacing:.2em;color:var(--muted);margin-bottom:.75rem}.hint-block{margin-top:1rem;display:grid;gap:.45rem;color:var(--muted);font-size:.78rem}.hint-block kbd{display:inline-block;min-width:1.4rem;padding:.1rem .35rem;margin-right:.2rem;border:1px solid color-mix(in oklab,white 16%,transparent);border-radius:3px;background:#121826;font-family:var(--font-ui);font-size:.72rem;color:var(--ink);text-align:center}.hint-note{margin-top:.35rem;color:color-mix(in oklab,var(--amber) 80%,white);font-size:.72rem;line-height:1.4}.board-wrap{display:flex;justify-content:center}.board-frame{position:relative;width:min(100%,300px);aspect-ratio:1 / 2;background:linear-gradient(180deg,#0b101a,#05070c);border:2px solid color-mix(in oklab,var(--cyan) 35%,#2a3348);border-radius:8px;box-shadow:0 0 0 1px color-mix(in oklab,var(--amber) 18%,transparent),0 24px 60px #0000008c,inset 0 0 40px #2de2e60d;overflow:hidden;transform:translateZ(0)}.board-frame.shake{animation:board-shake .35s cubic-bezier(.36,.07,.19,.97)}.board-frame.mega-shake{animation:board-shake-mega .55s cubic-bezier(.36,.07,.19,.97)}#game,#fx{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;display:block}#fx{pointer-events:none}.scanlines{position:absolute;top:0;right:0;bottom:0;left:0;background:repeating-linear-gradient(to bottom,transparent 0 2px,rgba(0,0,0,.08) 2px 3px);pointer-events:none;mix-blend-mode:multiply;opacity:.45}.flash{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;opacity:0;background:radial-gradient(circle at center,white,transparent 70%);mix-blend-mode:screen}.flash.on{animation:clear-flash .45s ease-out}.flash.tetris{background:radial-gradient(circle at center,#fff 0%,#ffe08a 25%,#2de2e6 55%,transparent 75%);animation:clear-flash-tetris .7s ease-out}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;background:color-mix(in oklab,#05070c 72%,transparent);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:5;transition:opacity .25s ease}.overlay.hidden{opacity:0;pointer-events:none}.overlay-card{width:min(88%,240px);text-align:center;padding:1.4rem 1.1rem;border:1px solid color-mix(in oklab,var(--cyan) 40%,transparent);background:color-mix(in oklab,var(--panel) 90%,transparent);border-radius:8px;box-shadow:0 0 40px color-mix(in oklab,var(--cyan) 18%,transparent)}.overlay-kicker{font-family:var(--font-display);font-size:.62rem;letter-spacing:.28em;color:var(--amber);margin-bottom:.55rem}.overlay-card h2{font-family:var(--font-display);font-size:1.15rem;letter-spacing:.06em;margin-bottom:.6rem}.overlay-card p:not(.overlay-kicker){color:var(--muted);font-size:.84rem;line-height:1.55;margin-bottom:1.1rem}#start-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:0;cursor:pointer;font-family:var(--font-display);font-size:.78rem;letter-spacing:.16em;padding:.75rem 1.2rem;color:#081018;background:linear-gradient(135deg,var(--amber),#ffd56a 45%,var(--cyan));border-radius:4px;transition:transform .15s ease,filter .15s ease}#start-btn:hover{transform:translateY(-1px);filter:brightness(1.05)}#start-btn:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}#hold,#next{width:100%;height:auto;display:block;background:#080c14;border-radius:4px;border:1px solid color-mix(in oklab,white 6%,transparent)}#next{min-height:280px}@keyframes pulse-mark{0%,to{opacity:.75;transform:scale(1)}50%{opacity:1;transform:scale(1.08)}}@keyframes board-shake{0%,to{transform:translateZ(0)}20%{transform:translate3d(-4px,2px,0)}40%{transform:translate3d(5px,-3px,0)}60%{transform:translate3d(-3px,1px,0)}80%{transform:translate3d(3px,-2px,0)}}@keyframes board-shake-mega{0%,to{transform:translateZ(0) scale(1)}15%{transform:translate3d(-8px,4px,0) scale(1.02)}30%{transform:translate3d(9px,-5px,0) scale(1.03)}45%{transform:translate3d(-6px,3px,0) scale(1.02)}60%{transform:translate3d(7px,-2px,0) scale(1.01)}80%{transform:translate3d(-3px,2px,0)}}@keyframes clear-flash{0%{opacity:.9}to{opacity:0}}@keyframes clear-flash-tetris{0%{opacity:1}40%{opacity:.75}to{opacity:0}}@media(max-width:820px){.stage{grid-template-columns:1fr 1fr;grid-template-areas:"board board" "hold next"}.board-wrap{grid-area:board}.hold-panel{grid-area:hold}.next-panel{grid-area:next}.hint-block{display:none}#next{min-height:160px}}@media(prefers-reduced-motion:reduce){.brand-mark,.board-frame.shake,.board-frame.mega-shake,.flash.on,.flash.tetris{animation:none!important}.flash.on,.flash.tetris{opacity:.35}}