:root{
  --bg:#080E1A;--bg2:#0B1026;--panel:#11162a;--panel2:#151b32;--text:#fff;--muted:#9aa4c2;
  --violet:#5A2CCF;--violet2:#7D4DFF;--blue:#3E6BFF;--cyan:#17B8E6;--teal:#14F0D4;
  --cell:#14182a;--gap:clamp(7px,2vw,11px);--radius:20px;--shadow:0 20px 55px #0000004a;color-scheme:dark
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:radial-gradient(circle at 50% -10%,#17174a 0,#0b1026 35%,#080e1a 75%);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
body{overflow-x:hidden;overscroll-behavior:none}
button{font:inherit;color:inherit;-webkit-tap-highlight-color:transparent}
button:active{transform:scale(.97)}
.app{width:min(100%,620px);margin:auto;padding:calc(18px + env(safe-area-inset-top)) max(14px,18px) calc(112px + env(safe-area-inset-bottom));min-height:100svh}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px}
.brand-wordmark{display:flex;flex-direction:column;line-height:.82}
.brand-wordmark span{font-size:clamp(30px,8vw,44px);font-weight:950;letter-spacing:-.065em}
.brand-wordmark b{margin-top:8px;font-size:clamp(12px,3vw,15px);letter-spacing:.72em;color:var(--teal);font-weight:850}
.header-actions{display:flex;gap:9px}
.icon-btn{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;background:linear-gradient(145deg,#11182b,#0d1324);border:1px solid #3e6bff66;box-shadow:0 0 22px #5a2ccf22,inset 0 1px #ffffff08;cursor:pointer}
.icon-btn svg,.card-icon svg,.utility-btn svg,.direction-btn svg,.bottom-nav svg{width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.icon-btn:first-child{color:#c5b4ff}.icon-btn:last-child{color:#8deee4}
.hud{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px}
.score-card{min-width:0;padding:13px 14px 14px;border-radius:18px;background:linear-gradient(145deg,#12172b,#0e1425);border:1px solid #ffffff0e;box-shadow:var(--shadow)}
.score-card--violet{border-color:#7d4dff55;box-shadow:0 15px 38px #5a2ccf1e}
.score-card--cyan{border-color:#14f0d455;box-shadow:0 15px 38px #14f0d41b}
.score-head{display:flex;justify-content:space-between;align-items:center;gap:8px}
.score-head>span:first-child{font-size:10px;letter-spacing:.15em;font-weight:900}
.score-card--violet .score-head>span:first-child{color:#a98bff}.score-card--cyan .score-head>span:first-child{color:var(--teal)}
.card-icon{display:grid;place-items:center;width:28px;height:28px;border-radius:9px;background:#ffffff08}
.score-card--violet .card-icon{color:#9c7dff}.score-card--cyan .card-icon{color:var(--teal)}
.card-icon svg{width:18px;height:18px}
.score-card strong{display:block;margin-top:7px;font-size:clamp(25px,7vw,35px);line-height:1;font-weight:950;letter-spacing:-.045em;font-variant-numeric:tabular-nums;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.utility-row{display:flex;align-items:center;gap:8px;margin:0 0 12px}
.mode-pill{margin-right:auto;padding:8px 10px;border-radius:10px;color:#b8a6ff;background:#5a2ccf1a;border:1px solid #7d4dff38;font-size:9px;font-weight:900;letter-spacing:.13em}
.utility-btn{min-height:36px;padding:0 11px;border-radius:11px;background:#ffffff06;border:1px solid #ffffff0d;display:flex;align-items:center;gap:6px;cursor:pointer;font-size:10px;font-weight:850}
.utility-btn svg{width:16px;height:16px;color:#aeb8d5}
.utility-btn.disabled{opacity:.38;cursor:default}
.board-wrap{position:relative}
.board{position:relative;width:min(100%,560px);aspect-ratio:1;margin:auto;padding:var(--gap);display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);background:linear-gradient(145deg,#11152b,#0a1021);border:1px solid #5a2ccf8a;border-radius:22px;box-shadow:0 25px 70px #0000005c,0 0 28px #3e6bff18;touch-action:none;user-select:none;overflow:hidden}
.cell{background:linear-gradient(145deg,#1b1e2e,#161a29);border:1px solid #ffffff04;border-radius:15px;min-width:0}
.tile{position:absolute;z-index:2;display:grid;place-items:center;border-radius:15px;font-weight:950;line-height:1;transition:transform 95ms cubic-bezier(.2,.8,.2,1);will-change:transform;contain:layout paint}
.tile.new{animation:pop .18s cubic-bezier(.2,1.5,.3,1)}.tile.merge{animation:merge .22s cubic-bezier(.2,1.5,.3,1)}
.tile.v2{background:#1b1e2e;color:#f5f6ff}.tile.v4{background:#20243a;color:#fff}
.tile.v8{background:linear-gradient(135deg,#2a2c48,#313557);color:#fff}.tile.v16{background:linear-gradient(135deg,#5a2ccf,#6538e2);color:#fff;box-shadow:0 0 20px #5a2ccf30}
.tile.v32{background:linear-gradient(135deg,#6f39ff,#704eff);color:#fff;box-shadow:0 0 22px #7d4dff35}
.tile.v64{background:linear-gradient(135deg,#7d4dff,#4d62ff);color:#fff;box-shadow:0 0 25px #7d4dff3d}
.tile.v128{background:linear-gradient(135deg,#3e6bff,#277eea);color:#fff;box-shadow:0 0 27px #3e6bff48}
.tile.v256{background:linear-gradient(135deg,#17b8e6,#168ee6);color:#fff;box-shadow:0 0 30px #17b8e655}
.tile.v512{background:linear-gradient(135deg,#2a8bff,#17b8e6);color:#fff;box-shadow:0 0 31px #17b8e650}
.tile.v1024{background:linear-gradient(135deg,#168ee6,#14d8dd);color:#fff;box-shadow:0 0 34px #14d8dd58}
.tile.v2048{background:linear-gradient(135deg,#14f0d4,#17b8e6);color:#06222b;box-shadow:0 0 38px #14f0d47a;animation:pop .18s cubic-bezier(.2,1.5,.3,1),heroPulse 2.2s ease-in-out infinite}
.tile.v4096,.tile.v8192,.tile.vbig{background:linear-gradient(135deg,#14f0d4,#7d4dff);color:#071523;box-shadow:0 0 45px #14f0d466}
.board.high-value{box-shadow:0 25px 70px #0000005c,0 0 42px #14f0d426}
.gesture-hint{position:absolute;z-index:10;left:50%;top:50%;transform:translate(-50%,-50%);padding:11px 16px;border-radius:999px;background:#0b0f1ddd;border:1px solid #ffffff15;backdrop-filter:blur(10px);color:#fff;font-weight:850;font-size:12px;pointer-events:none;opacity:0;transition:opacity .25s}
.gesture-hint.visible{opacity:1}.timer{position:absolute;z-index:5;right:14px;top:14px;padding:7px 10px;border-radius:10px;background:#0a0d18dd;border:1px solid #ffffff12;font-variant-numeric:tabular-nums;font-weight:900}
.direction-pad{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin:13px auto 0;max-width:560px}
.direction-btn{height:58px;border-radius:16px;background:linear-gradient(145deg,#12182c,#0c1324);border:1px solid #5a2ccf80;box-shadow:0 10px 25px #0000002e,0 0 18px #5a2ccf16;display:grid;place-items:center;cursor:pointer;touch-action:manipulation}
.direction-btn svg{width:27px;height:27px;color:#aa91ff;stroke-width:2}
.direction-right{border-color:#14f0d477;box-shadow:0 10px 25px #0000002e,0 0 18px #14f0d41b}.direction-right svg{color:var(--teal)}
.bottom-nav{position:fixed;z-index:45;left:50%;bottom:0;transform:translateX(-50%);width:min(calc(100% - 14px),592px);display:grid;grid-template-columns:repeat(4,1fr);gap:4px;padding:7px 5px max(8px,env(safe-area-inset-bottom));border:1px solid #ffffff12;border-bottom:0;border-radius:20px 20px 0 0;background:#0d1325ed;box-shadow:0 -12px 38px #0004;backdrop-filter:blur(20px)}
.bottom-nav button{min-height:52px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;background:transparent;border:0;border-radius:14px;color:#9b91bd;font-size:9px;font-weight:800;cursor:pointer}
.bottom-nav button svg{width:21px;height:21px}.bottom-nav button span{font-size:9px}.bottom-nav button.active{color:var(--teal);background:#14f0d40d;box-shadow:inset 0 0 0 1px #14f0d41c}.bottom-nav button.active svg{filter:drop-shadow(0 0 6px #14f0d455)}
.overlay{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:max(18px,env(safe-area-inset-top)) 18px max(18px,env(safe-area-inset-bottom));background:#050711c7;backdrop-filter:blur(15px)}
.overlay[hidden]{display:none!important;pointer-events:none!important}
.modal{width:min(100%,480px);max-height:min(88svh,720px);overflow:auto;background:linear-gradient(160deg,#151b34,#0d1427);border:1px solid #7d4dff44;border-radius:24px;padding:21px;box-shadow:0 30px 100px #000b;animation:modalIn .22s ease-out}
.modal h2{margin:0 0 8px;font-size:28px;letter-spacing:-.04em}.modal p{color:var(--muted);line-height:1.5}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.modal-head h2{margin-bottom:0}
.modal-close{width:38px!important;min-width:38px!important;height:38px;min-height:38px!important;padding:0!important;border-radius:12px!important;background:#ffffff08!important;border:1px solid #ffffff0d!important;font-size:24px!important;line-height:1;cursor:pointer}
.modal-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.modal-actions button{flex:1;min-width:140px;min-height:45px;border-radius:14px;background:#ffffff0b;border:1px solid #ffffff10;padding:0 12px;cursor:pointer;font-weight:850}.modal-actions .accent{background:linear-gradient(135deg,#14f0d4,#17b8e6);border:0;color:#06202a;box-shadow:0 10px 28px #14f0d433}
.list{display:grid;gap:8px;margin-top:15px}.row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px;border-radius:14px;background:#ffffff07}.row small{display:block;color:var(--muted);margin-top:3px}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:15px}.stat-grid>div{padding:13px;border-radius:15px;background:#ffffff07}.stat-grid small{display:block;color:var(--muted);font-size:10px}.stat-grid strong{display:block;margin-top:4px;font-size:20px}
.settings-section{padding:12px 0;border-bottom:1px solid #ffffff09}.settings-section h3{margin:0 0 4px;font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.1em}.toggle{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid #ffffff09}.toggle input{width:20px;height:20px;accent-color:var(--violet2)}.range-row{display:grid;gap:7px;padding:11px 0}.range-row span{font-size:11px;color:var(--muted)}.range-row input{width:100%;accent-color:var(--violet2)}.settings-note{font-size:10px!important;margin-bottom:0}
.mode-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:16px}.mode-card{text-align:left;padding:15px;border-radius:17px;background:#ffffff07;border:1px solid #ffffff0b;color:var(--text);min-height:125px;cursor:pointer}.mode-card.active{border-color:#7d4dff77;background:#7d4dff12}.mode-icon{display:block;font-size:23px;margin-bottom:13px}.mode-card strong{display:block;font-size:13px}.mode-card small{display:block;color:var(--muted);margin-top:5px;line-height:1.35}
.toast{position:fixed;z-index:120;left:50%;bottom:calc(92px + env(safe-area-inset-bottom));transform:translate(-50%,15px);background:#10172aef;border:1px solid #ffffff15;border-radius:999px;padding:10px 15px;font-weight:850;font-size:12px;opacity:0;pointer-events:none;transition:.2s;white-space:nowrap;max-width:calc(100% - 28px);overflow:hidden;text-overflow:ellipsis}.toast.show{opacity:1;transform:translate(-50%,0)}
.floating-score{position:absolute;z-index:20;left:50%;top:45%;transform:translate(-50%,10px);font-weight:950;font-size:17px;color:#fff;text-shadow:0 3px 14px #0008;opacity:0;pointer-events:none}.floating-score.big{font-size:25px;color:var(--teal)}.floating-score.show{animation:floatScore .7s ease-out forwards}
.score-pulse{animation:scorePulse .35s ease-out}.record-pulse{animation:recordPulse .55s ease-out}
.achievement.done{border:1px solid #7d4dff66;background:#7d4dff12}
.leaderboard-tabs{display:flex;gap:7px;overflow:auto;padding:4px 1px 10px;margin-top:8px;scrollbar-width:none}.leaderboard-tabs::-webkit-scrollbar{display:none}.leaderboard-tabs button{flex:0 0 auto;min-height:40px;border-radius:12px;padding:0 13px;background:#ffffff07;border:1px solid #ffffff0d;color:var(--muted);font-size:11px;font-weight:850}.leaderboard-tabs button.active{background:#7d4dff1c;border-color:#7d4dff55;color:var(--text)}
.leader-list{display:flex;flex-direction:column;gap:6px;margin-top:4px}.leader-row{min-height:56px;display:grid;grid-template-columns:42px 32px minmax(0,1fr) auto;align-items:center;gap:8px;padding:7px 10px;border:1px solid #ffffff08;background:#ffffff05;border-radius:15px}.leader-row.me{background:linear-gradient(90deg,#7d4dff18,#14f0d410);border-color:#7d4dff50;box-shadow:inset 3px 0 #7d4dff}.leader-row .rank{font-weight:900;color:var(--muted);font-size:12px;text-align:center}.leader-row .rank.top{font-size:16px}.avatar{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;overflow:hidden;background:#ffffff0b;color:var(--muted)}.avatar img{width:100%;height:100%;object-fit:cover}.avatar svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.7}.player-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:750}.leader-row strong{font-size:13px;font-variant-numeric:tabular-nums}.leader-me{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:12px;margin-top:9px;padding:12px 13px;border-radius:15px;background:#7d4dff16;border:1px solid #7d4dff3d}.leader-me span{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-weight:800}.leader-me strong{font-size:17px}.leader-me b{font-size:13px}.leader-me.muted{grid-template-columns:1fr auto}.leader-me.muted b{color:var(--muted);font-size:10px}.leaderboard-footnote{font-size:10px!important;text-align:center;margin:12px 0 0}.leaderboard-empty{display:grid;place-items:center;text-align:center;padding:28px 12px}.leaderboard-empty.small{padding:24px}.leaderboard-empty h3{margin:10px 0 4px}.leaderboard-empty p{max-width:320px;margin:0 auto 14px}.lb-symbol{width:54px;height:54px;display:grid;place-items:center;border-radius:17px;background:#7d4dff18;color:var(--violet2)}.lb-symbol svg{width:27px;height:27px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.leaderboard-loading{display:grid;place-items:center;min-height:180px;color:var(--muted);font-size:12px}.spinner{width:24px;height:24px;border:2px solid #ffffff15;border-top-color:var(--violet2);border-radius:50%;animation:spin .7s linear infinite}
@keyframes pop{0%{opacity:0;transform:scale(.15)}70%{transform:scale(1.08)}100%{opacity:1;transform:scale(1)}}@keyframes merge{0%{transform:scale(.9)}45%{transform:scale(1.14)}100%{transform:scale(1)}}@keyframes heroPulse{50%{filter:brightness(1.08);box-shadow:0 0 52px #14f0d488}}@keyframes modalIn{from{opacity:0;transform:translateY(10px) scale(.98)}to{opacity:1;transform:none}}@keyframes floatScore{0%{opacity:0;transform:translate(-50%,12px) scale(.9)}20%{opacity:1}100%{opacity:0;transform:translate(-50%,-42px) scale(1.05)}}@keyframes scorePulse{50%{transform:scale(1.12);color:#d9d2ff}}@keyframes recordPulse{0%,100%{transform:scale(1)}35%{transform:scale(1.16);color:var(--teal)}}@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:420px){.app{padding-left:12px;padding-right:12px}.brand-wordmark b{letter-spacing:.55em}.icon-btn{width:44px;height:44px}.hud{gap:7px}.score-card{padding:11px}.utility-btn{padding:0 9px}.utility-btn span{font-size:9px}.direction-pad{gap:7px}.direction-btn{height:54px;border-radius:14px}.bottom-nav{width:calc(100% - 8px)}.modal{padding:19px}}
@media(max-width:340px){.brand-wordmark span{font-size:29px}.brand-wordmark b{font-size:10px;letter-spacing:.42em}.icon-btn{width:41px;height:41px}.utility-btn span{display:none}.direction-btn{height:50px}.bottom-nav button{min-height:49px}.bottom-nav button span{font-size:8px}}
@media(orientation:landscape) and (max-height:600px){.app{width:min(100%,920px);display:grid;grid-template-columns:minmax(300px,1fr) minmax(300px,540px);grid-template-areas:'top board' 'hud board' 'util board' 'pad board' 'nav nav';gap:8px;align-items:start}.topbar{grid-area:top}.hud{grid-area:hud;margin:0}.utility-row{grid-area:util}.board-wrap{grid-area:board;grid-row:1 / span 4}.direction-pad{grid-area:pad}.bottom-nav{grid-area:nav;position:static;transform:none;width:100%}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.floating-score{display:none}}