@import "https://fonts.googleapis.com/css2?family=Rubik:wght@400;500;700;800&display=swap";
@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial}}}@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI 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components;@layer utilities{.visible{visibility:visible}.fixed{position:fixed}.static{position:static}.container{width:100%}@media (min-width:40rem){.container{max-width:40rem}}@media (min-width:48rem){.container{max-width:48rem}}@media (min-width:64rem){.container{max-width:64rem}}@media (min-width:80rem){.container{max-width:80rem}}@media (min-width:96rem){.container{max-width:96rem}}.contents{display:contents}.flex{display:flex}.grid{display:grid}.table{display:table}.h-full{height:100%}.min-h-full{min-height:100%}.grow{flex-grow:1}.flex-col{flex-direction:column}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.shadow{--tw-shadow:0 1px 3px 0 var(--tw-shadow-color,#0000001a), 0 1px 2px -1px var(--tw-shadow-color,#0000001a);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) 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16px #0000004d;--background-gradient:radial-gradient(circle at top, #1e1b1866, transparent 50%), linear-gradient(180deg, #181715 0%, #0e0d0c 100%);--foreground:#f4efe6;--muted-text:#bcaea0;--glass-bg:#1e1c1aa6;--glass-shadow:0 14px 32px #0006;--board-bg:#2d2824;--cell-bg:#ffffff0d;--score-card-bg:linear-gradient(180deg, #4d433b 0%, #3a322c 100%);--btn-action-bg:#403a35;--btn-action-hover:#4e4741;--btn-action-text:#f4efe6;--btn-primary-bg:linear-gradient(180deg, #b09c87 0%, #907b66 100%);--btn-primary-hover:linear-gradient(180deg, #c2ae99 0%, #a18b76 100%);--game-message-bg:#12100ed9;--message-card-bg:#23211ef2}html{background:var(--background-gradient);color:var(--foreground);transition:background .3s,color .3s}body{color:var(--foreground);background:0 0;margin:0;font-family:Rubik,Arial,sans-serif;transition:color .3s}button,a{-webkit-tap-highlight-color:transparent}.page-shell{min-height:100vh;padding:28px 16px 48px}.game-page{width:min(100%,980px);margin:0 auto;animation:.42s ease-out both fade-up}.hero-row{justify-content:space-between;align-items:end;gap:24px;margin-bottom:18px;display:flex}.hero-copy{flex:1}.eyebrow{color:var(--muted-text);letter-spacing:.06em;text-transform:uppercase;margin:0 0 10px;font-size:.92rem;font-weight:600}.game-title{color:var(--foreground);letter-spacing:-.06em;margin:0;font-size:clamp(4rem,12vw,6rem);font-weight:800;line-height:.92}.game-intro{color:var(--foreground);margin:10px 0 0;font-size:clamp(1rem,2.8vw,1.35rem);line-height:1.5}.controls-panel{width:min(100%,290px)}.score-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-bottom:12px;display:grid}.score-card{background:var(--score-card-bg);color:#fffef7;box-shadow:var(--shadow-soft);text-align:center;border-radius:18px;padding:12px 14px 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.instructions-divider{background:#ffffff1a}.instructions-shortcuts{color:var(--foreground);opacity:.85;flex-wrap:wrap;gap:16px;font-size:.88rem;display:flex}.shortcut-item{align-items:center;gap:6px;display:inline-flex}.shortcut-key{background:var(--btn-action-bg);color:var(--btn-action-text);border:1px solid #0000000f;border-radius:6px;padding:3px 7px;font-family:inherit;font-size:.78rem;font-weight:700;box-shadow:0 2px #0000001a}.board-shell{width:var(--board-size);height:var(--board-size);background:linear-gradient(180deg, #ffffff0d, transparent 30%), var(--board-bg);box-shadow:inset 0 1px 0 #ffffff26, var(--shadow-soft);touch-action:none;-webkit-user-select:none;user-select:none;border-radius:28px;margin:0 auto 36px;transition:background 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.tile-inner{color:#776e65;background:#eee4da}.tile--4 .tile-inner{color:#776e65;background:#ede0c8}.tile--8 .tile-inner{color:#f9f6f2;background:#f2b179}.tile--16 .tile-inner{color:#f9f6f2;background:#f59563}.tile--32 .tile-inner{color:#f9f6f2;background:#f67c5f}.tile--64 .tile-inner{color:#f9f6f2;background:#f65e3b}.tile--128 .tile-inner{color:#f9f6f2;background:#edcf72;font-size:clamp(1.5rem,5vw,2.6rem)}.tile--256 .tile-inner{color:#f9f6f2;background:#edcc61;font-size:clamp(1.5rem,5vw,2.6rem)}.tile--512 .tile-inner{color:#f9f6f2;background:#edc850;font-size:clamp(1.5rem,5vw,2.6rem)}.tile--1024 .tile-inner,.tile--2048 .tile-inner{color:#f9f6f2;background:#edc53f;font-size:clamp(1.15rem,4vw,2rem)}.tile--super .tile-inner{color:#f9f6f2;background:#3c3a32;font-size:clamp(.95rem,3.5vw,1.6rem)}.game-message{background:var(--game-message-bg);border-radius:28px;justify-content:center;align-items:center;transition:background .3s;animation:.22s both overlay-fade;display:flex;position:absolute;inset:0}.message-card{background:var(--message-card-bg);width:min(86%,340px);box-shadow:var(--shadow-soft);text-align:center;border-radius:22px;padding:24px;transition:background .3s;animation:.45s cubic-bezier(.175,.885,.32,1.275) 80ms both message-pop}.message-title{color:var(--foreground);margin:0 0 16px;font-size:clamp(1.8rem,5vw,2.4rem);font-weight:800;transition:color .3s}.theme-toggle-btn-inline{justify-content:center;align-items:center;width:48px;min-width:48px;display:inline-flex;flex:0 0 48px!important;padding:13px!important}.theme-toggle-btn-inline:hover{transform:translateY(-1px)}.theme-icon{width:20px;height:20px}@keyframes tile-appear{0%{opacity:0;transform:scale(.6)}to{opacity:1;transform:scale(1)}}@keyframes tile-pop{0%{transform:scale(.8)}55%{transform:scale(1.12)}to{transform:scale(1)}}@keyframes overlay-fade{0%{opacity:0}to{opacity:1}}@keyframes fade-up{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes message-pop{0%{opacity:0;transform:scale(.7)translateY(20px)}to{opacity:1;transform:scale(1)translateY(0)}}@media (max-width:760px){.page-shell{padding-top:20px}.hero-row{flex-direction:column;align-items:stretch}.controls-panel{width:100%}.button-row{flex-wrap:wrap}.button-row>*{flex:120px}.button-row>.theme-toggle-btn-inline{flex:0 0 48px!important}.instructions-card{margin-top:20px;padding:16px 20px}}@media (max-width:520px){:root{--board-size:min(90vw, 64vh, 380px);--grid-gap:clamp(6px, 1.8vw, 10px)}.page-shell{padding:16px 16px 28px}.hero-row{gap:8px;margin-bottom:8px}.game-title{font-size:clamp(2.6rem,9vw,3.6rem)}.game-intro{margin-top:2px;font-size:.88rem}.score-grid{gap:8px;margin-bottom:8px}.score-card{border-radius:12px;padding:8px 10px 6px}.action-button{border-radius:12px;padding:10px 14px;font-size:.9rem}.board-shell{margin:0 auto 24px}.instructions-card{border-radius:18px;margin-top:16px;margin-bottom:12px;padding:14px 16px}.instructions-title{font-size:1.05rem}.instructions-text{font-size:.88rem}.instructions-shortcuts{gap:12px;font-size:.82rem}}.powerups-panel{justify-content:center;margin-bottom:24px;display:flex}.powerups-container{background:var(--glass-bg);box-shadow:var(--glass-shadow);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid #ffffff14;border-radius:24px;gap:20px;padding:12px 24px;display:flex}.powerup-wrapper{flex-direction:column;align-items:center;gap:6px;display:flex;position:relative}.powerup-btn{appearance:none;background:var(--btn-action-bg);width:54px;height:54px;color:var(--btn-action-text);cursor:pointer;border:0;border-radius:16px;justify-content:center;align-items:center;transition:transform .16s,background .16s,box-shadow .16s,opacity .16s,color .16s;display:flex;box-shadow:inset 0 -1px #00000014,0 4px 10px #8c643c0f}.powerup-btn:hover:not(:disabled){background:var(--btn-action-hover);transform:translateY(-2px)}.powerup-btn:disabled{opacity:.35;cursor:not-allowed}.powerup-btn--active{transform:scale(1.05);box-shadow:0 0 12px #8f7a6680;background:var(--btn-primary-bg)!important;color:#fffef7!important}.powerup-icon{pointer-events:none;width:26px;height:26px}.powerup-indicators{gap:4px;display:flex}.powerup-indicator-bar{background:#8c643c26;border-radius:2px;width:14px;height:3px;transition:background .3s}.dark .powerup-indicator-bar{background:#ffffff26}.powerup-indicator-bar.active{background:#8f7a66}.dark .powerup-indicator-bar.active{background:#bcaea0}.powerup-tooltip{color:#fffef7;z-index:1000;pointer-events:none;text-align:center;background:#282421f2;border-radius:12px;width:max-content;max-width:220px;padding:10px 14px;font-size:.8rem;animation:.18s ease-out both tooltip-fade;position:absolute;bottom:calc(100% + 12px);left:50%;transform:translate(-50%);box-shadow:0 8px 24px #00000029}.powerup-tooltip:after{content:"";border:6px solid #0000;border-top-color:#282421f2;position:absolute;top:100%;left:50%;transform:translate(-50%)}.tooltip-title{letter-spacing:.02em;margin-bottom:2px;font-weight:500}.tooltip-title strong{color:#f2b179;font-weight:700}.tooltip-subtitle{opacity:.8;font-size:.72rem}@keyframes tooltip-fade{0%{opacity:0;transform:translate(-50%)translateY(4px)}to{opacity:1;transform:translate(-50%)translateY(0)}}.powerup-action-banner{top:var(--grid-gap);left:var(--grid-gap);right:var(--grid-gap);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:500;color:#fffef7;background:#282421e0;border:1px solid #ffffff1a;border-radius:16px;justify-content:space-between;align-items:center;gap:12px;padding:10px 16px;animation:.24s cubic-bezier(.175,.885,.32,1.1) both banner-slide-down;display:flex;position:absolute}.powerup-banner-text{letter-spacing:.01em;font-size:.88rem;font-weight:600}.powerup-banner-cancel{appearance:none;color:#fffef7;cursor:pointer;background:#f65e3b;border:0;border-radius:8px;padding:6px 12px;font-size:.8rem;font-weight:700;transition:transform .12s,background .12s;box-shadow:0 2px 6px #f65e3b4d}.powerup-banner-cancel:hover{background:#e04f2c;transform:translateY(-1px)}@keyframes banner-slide-down{0%{opacity:0;transform:translateY(-16px)}to{opacity:1;transform:translateY(0)}}.tile--interactive{pointer-events:auto;cursor:pointer}.tile--interactive:hover .tile-inner{filter:brightness(1.05);transform:scale(1.04);box-shadow:0 0 14px #8c643c4d}.dark .tile--interactive:hover .tile-inner{box-shadow:0 0 14px #ffffff40}.tile--selected .tile-inner{outline:3px solid #f2b179;animation:1s infinite alternate tile-pulse;transform:scale(1.08)!important;box-shadow:0 0 18px #f2b179!important}@keyframes tile-pulse{0%{outline-color:#f2b179;box-shadow:0 0 12px #f2b179}to{outline-color:#f59563;box-shadow:0 0 22px #f59563}}.tile--4096 .tile-inner{color:#f9f6f2;background:#ff3b30;font-size:clamp(1.15rem,4vw,2rem);box-shadow:0 0 12px #ff3b3066}.tile--8192 .tile-inner{color:#f9f6f2;background:#af52de;font-size:clamp(1.15rem,4vw,2rem);box-shadow:0 0 12px #af52de66}.tile--16384 .tile-inner{color:#f9f6f2;background:#007aff;font-size:clamp(.95rem,3.5vw,1.6rem);box-shadow:0 0 12px #007aff66}.tile--32768 .tile-inner{color:#f9f6f2;background:#34c759;font-size:clamp(.95rem,3.5vw,1.6rem);box-shadow:0 0 12px #34c75966}.tile--65536 .tile-inner{color:#f9f6f2;background:#1c1c1e;border:2px solid #edc53f;font-size:clamp(.95rem,3.5vw,1.6rem);box-shadow:0 0 16px #edc53f80}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}