:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#1a1a1a;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--fs-small: clamp(.75rem, .7rem + .25vw, .875rem);--fs-base: clamp(.875rem, .8rem + .5vw, 1rem);--fs-medium: clamp(1rem, .9rem + .75vw, 1.25rem);--fs-large: clamp(1.25rem, 1rem + 1.5vw, 1.75rem);--fs-xl: clamp(1.75rem, 1.5rem + 2vw, 2.5rem);--fs-xxl: clamp(2.25rem, 2rem + 2.5vw, 3.5rem);--tile-font-size: var(--fs-large);--primary-color: #4a5bff;--hover-color: #5a6bff;--bg-dark: #1a1a1a;--bg-light: #f5f5f5;--tile-dark: #4a4a4a;--tile-light: #e0e0e0;--text-dark: rgba(255, 255, 255, .87);--text-light: #213547;--success-color: #4caf50;--wood-primary: #966F33;--wood-secondary: #7D5A24;--wood-highlight: #AB8044;--wood-shadow: #5D4A2C;--wood-border: #4A3520;font-size:16px}@media (max-width: 768px){:root{font-size:14px}}@media (max-width: 480px){:root{font-size:12px}}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh;overflow-x:hidden;width:100%;box-sizing:border-box}*,*:before,*:after{box-sizing:border-box}h1,h2,h3{margin-top:0;text-align:center;color:var(--text-dark)}h1{font-size:var(--fs-xxl);margin-bottom:1.5rem}h2{font-size:var(--fs-xl);margin-bottom:1rem}#app{width:100%;height:100vh;margin:0 auto;padding:1rem;text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center}.game-container{display:flex;flex-direction:column;align-items:center;width:100%;height:100%;max-width:1200px;margin:0 auto}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#2a2a2a;cursor:pointer;transition:all .2s ease}button:hover{border-color:var(--primary-color);background-color:#3a3a3a;transform:translateY(-2px)}button:active{transform:translateY(0)}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}.instructions{margin-top:1.5rem;color:#a0a0a0;max-width:400px;text-align:center}.welcome-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;max-width:600px;padding:2rem;background-color:#2a2a2ae6;border-radius:16px;box-shadow:0 8px 32px #0000004d;transition:all .3s ease}.welcome-content{display:flex;flex-direction:column;align-items:center;gap:1.5rem;width:100%}.welcome-content p{font-size:var(--fs-medium);margin:0}.dimension-selector{display:flex;flex-direction:column;gap:.5rem;width:100%;max-width:300px}.dimension-selector label{font-size:var(--fs-medium);margin-bottom:.5rem}#dimension-select{padding:.8rem;font-size:var(--fs-base);border-radius:8px;border:1px solid #444;background-color:#2a2a2a;color:var(--text-dark);cursor:pointer;width:100%}#dimension-select option{padding:.5rem}.pulse-button{background-color:var(--primary-color);color:#fff;font-size:var(--fs-medium);font-weight:700;padding:.8em 2em;margin-top:1rem;animation:pulse 2s infinite}.pulse-button:hover{animation:none;background-color:var(--hover-color)}@keyframes pulse{0%{box-shadow:0 0 #4a5bffb3}70%{box-shadow:0 0 0 15px #4a5bff00}to{box-shadow:0 0 #4a5bff00}}.puzzle-container{display:flex;flex-direction:column;align-items:center;gap:20px;padding:1rem;width:100%;height:auto;min-height:100%}.puzzle-container.fullscreen{position:fixed;top:0;left:0;right:0;bottom:0;z-index:1000;background-color:var(--bg-dark);height:100vh;height:100dvh;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);overflow-y:auto;padding-top:max(env(safe-area-inset-top,0px),1rem);padding-bottom:max(env(safe-area-inset-bottom,0px),1rem)}.game-header{display:flex;flex-direction:column;align-items:center;gap:10px;width:100%;margin-bottom:1rem}.game-stats{display:flex;justify-content:space-between;gap:20px;font-size:1.1rem}.puzzle-board{display:grid;gap:2px;position:relative;background-color:#6d4c41;border-radius:8px;box-shadow:inset 0 0 10px #000c,0 6px 20px #0006;padding:4px;margin:0 auto;width:min(90vw,90vh,500px);height:min(90vw,90vh,500px);overflow:hidden;transform:translateZ(0);touch-action:manipulation}.puzzle-board:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background-size:calc(100% / var(--current-dimension, 3)) calc(100% / var(--current-dimension, 3));background-image:linear-gradient(to right,rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(to bottom,rgba(255,255,255,.05) 1px,transparent 1px);pointer-events:none;z-index:0}.puzzle-tile{display:flex;justify-content:center;align-items:center;background:linear-gradient(135deg,var(--wood-highlight) 0%,var(--wood-primary) 60%,var(--wood-secondary) 100%);border-radius:6px;font-size:var(--tile-font-size);font-weight:700;color:#ffffffe6;text-shadow:1px 1px 2px rgba(0,0,0,.5);cursor:pointer;position:absolute;left:0;top:0;margin:0;padding:0;transition:transform .15s ease-out,box-shadow .2s ease-out;box-shadow:inset 0 1px 3px #ffffff4d,inset 0 -2px 3px #0000004d,0 3px 4px #0006;border:1px solid var(--wood-border);-webkit-user-select:none;user-select:none;will-change:transform;backface-visibility:hidden;overflow:hidden;box-sizing:border-box}.puzzle-tile:hover{background:linear-gradient(135deg,var(--wood-highlight) 10%,var(--wood-primary) 70%,var(--wood-secondary) 100%);transform:translate3d(calc(var(--x, 0) * 1px),calc(var(--y, 0) * 1px),0) scale(1.02) translateZ(1px);box-shadow:inset 0 1px 3px #ffffff4d,inset 0 -2px 3px #0000004d,0 5px 6px #0006}.puzzle-controls{display:flex;justify-content:center;gap:12px;width:100%;position:fixed;bottom:5%;left:0;right:0;padding:1rem 0;background-color:#00000080;z-index:100}#shuffle-button{background-color:var(--primary-color);color:#fff;font-weight:700;padding:.7em 1.5em}#shuffle-button:hover{background-color:var(--hover-color)}#back-button{background-color:#555;color:#fff}#back-button:hover{background-color:#666}#moves-counter{font-size:1.2rem;color:silver}.success-message{color:var(--success-color);font-weight:700;font-size:1.2rem;margin-top:8px;animation:success-pulse 1.5s infinite}@keyframes success-pulse{0%{opacity:.8}50%{opacity:1}to{opacity:.8}}@media (max-width: 768px){.welcome-screen{width:90%;max-width:none;padding:1.5rem}h1{font-size:2.2rem;margin-bottom:1rem}h2{font-size:1.6rem;margin-bottom:.8rem}.puzzle-tile{box-shadow:0 1px 3px #0003}.puzzle-board{width:90vw!important;height:90vw!important;max-width:90vmin;max-height:90vmin}.puzzle-controls{flex-direction:row;flex-wrap:wrap;justify-content:center;width:100%;gap:.8rem;margin-top:1rem}.welcome-content{gap:1rem}}@media (max-width: 480px){.welcome-screen{padding:1rem;width:95%}h1{font-size:1.8rem;margin-bottom:.8rem}h2{font-size:1.4rem;margin-bottom:.6rem}.pulse-button{padding:.6em 1.5em;font-size:1.1rem;width:100%}.puzzle-controls{flex-direction:column;gap:10px;padding:0 1rem}.puzzle-controls button{width:100%;font-size:1rem;padding:.5em 1em}.puzzle-board{width:95vw!important;height:95vw!important}.game-header{padding:.5rem}.game-stats{flex-direction:column;gap:.5rem}#moves-counter{font-size:.9rem}.dimension-selector{width:100%}}@media (max-width: 360px){.welcome-screen{padding:.8rem}h1{font-size:1.5rem}h2{font-size:1.2rem}.welcome-content p{font-size:1rem}.dimension-selector label{font-size:.9rem}#dimension-select{font-size:.9rem;padding:.6rem}}@media (max-height: 500px) and (orientation: landscape){.puzzle-container{flex-direction:row;flex-wrap:wrap;justify-content:center;gap:1rem}.game-header{width:100%;margin-bottom:.5rem}.puzzle-board{width:70vh!important;height:70vh!important;margin:0}.puzzle-controls{flex-direction:column;height:70vh;justify-content:center;margin-left:1rem}h1{font-size:1.8rem;margin-bottom:.6rem}h2{font-size:1.4rem;margin-bottom:.4rem}}@media (prefers-color-scheme: light){:root{color:var(--text-light);background-color:var(--bg-light)}h1,h2,h3{color:var(--text-light)}.welcome-screen{background-color:#f0f0f0e6;box-shadow:0 8px 32px #00000026}#dimension-select{background-color:#fff;color:var(--text-light);border-color:#ddd}.puzzle-container.fullscreen{background-color:var(--bg-light)}.puzzle-board{background-color:#8b5a2b;box-shadow:inset 0 0 8px #00000080,0 4px 16px #0003}.puzzle-board:before{background-image:linear-gradient(to right,rgba(255,255,255,.1) 1px,transparent 1px),linear-gradient(to bottom,rgba(255,255,255,.1) 1px,transparent 1px)}.puzzle-tile{background:linear-gradient(135deg,#c19a6b,#966f33 60%,#7d5a24);color:#fffffff2;box-shadow:inset 0 1px 3px #fff6,inset 0 -2px 3px #0000004d,0 3px 4px #0000004d}.puzzle-tile:hover{background:linear-gradient(135deg,tan 10%,#966f33 70%,#7d5a24)}button{background-color:#e0e0e0}button:hover{background-color:#d0d0d0}#shuffle-button,.pulse-button{background-color:var(--primary-color);color:#fff}#shuffle-button:hover,.pulse-button:hover{background-color:var(--hover-color)}#back-button{background-color:#999}#back-button:hover{background-color:#888}.instructions{color:#555}#moves-counter{color:#444}}.puzzle-tile.touch-device{padding:5px;transition:transform .1s ease-out,background-color .2s ease}.puzzle-tile.touch-device:active{background-color:var(--primary-color);transform:scale(.95)}button:focus-visible,select:focus-visible,.puzzle-tile:focus-visible{outline:3px solid var(--primary-color);outline-offset:2px;box-shadow:0 0 0 2px #ffffff80}@keyframes tile-appear{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}.puzzle-tile{animation:none}@media (prefers-color-scheme: dark){.puzzle-tile{background-color:var(--primary-color);color:#fff}.puzzle-tile:hover{background-color:var(--hover-color)}}@media (forced-colors: active){.puzzle-tile,button,select{border:2px solid}.success-message{outline:2px solid}}.puzzle-tile{transition:transform .15s ease-out,box-shadow .2s ease-out}.puzzle-tile.sliding{z-index:10;transition:transform .25s cubic-bezier(.2,.9,.4,1),box-shadow .25s ease-out;box-shadow:inset 0 1px 2px #fff3,inset 0 -1px 2px #0003,0 8px 10px #00000080}.puzzle-board.creating-tiles .puzzle-tile{animation:tile-appear .2s ease-out}.puzzle-tile.sliding{pointer-events:none}@media (max-width: 768px){.puzzle-tile.sliding{transition:transform .25s cubic-bezier(.2,.9,.4,1)}.puzzle-tile.sliding.long-move{transition:transform .3s cubic-bezier(.15,.85,.3,1)}}.puzzle-tile.sliding:focus{outline:none;box-shadow:0 0 0 3px #4a5bff80}.puzzle-tile{will-change:transform;backface-visibility:hidden}.puzzle-tile:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background-image:repeating-linear-gradient(100deg,#ffffff0f,#daa52014,#ffffff03,#0000000a,#00000003 4px);opacity:.5;border-radius:5px;pointer-events:none}.puzzle-tile.sliding.long-move{transition:transform .35s cubic-bezier(.15,.85,.3,1),box-shadow .3s ease-out;z-index:15;background:linear-gradient(135deg,var(--wood-highlight) 20%,var(--wood-primary) 60%,var(--wood-secondary) 100%);box-shadow:inset 0 1px 3px #ffffff40,inset 0 -1px 2px #0003,0 12px 14px #00000080}.button-group{display:flex;flex-direction:column;gap:12px;margin-top:20px;width:100%}.game-button{background-color:#4a6baf;color:#fff;padding:12px 20px;border:none;border-radius:5px;cursor:pointer;font-size:16px;font-weight:600;transition:all .2s ease}.game-button:hover{background-color:#3a5a9f;transform:translateY(-2px);box-shadow:0 4px 8px #0000001a}.multiplayer-status{margin-top:10px;display:flex;justify-content:space-between;padding:8px 0}#connection-status{font-weight:600;color:#666}#connection-status.connected{color:#4caf50}#connection-status.disconnected{color:#f44336}#opponent-status{font-weight:600}#opponent-status.opponent-won{color:#ff9800;animation:pulse 2s infinite}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.modal-content{background-color:#fff;padding:30px;border-radius:8px;box-shadow:0 4px 20px #00000026;width:90%;max-width:500px;max-height:90vh;overflow-y:auto}.modal-content h2{margin-top:0;color:#333}.connection-code{margin:15px 0;position:relative}.connection-code textarea{width:100%;min-height:80px;padding:10px;border:1px solid #ddd;border-radius:4px;font-family:monospace;font-size:14px;resize:vertical}.connection-code textarea.error{border-color:#f44336;animation:shake .5s}.connection-code button{position:absolute;top:10px;right:10px;background-color:#eee;border:none;padding:5px 10px;border-radius:3px;cursor:pointer}.modal-buttons{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}.modal-buttons button{padding:8px 16px;border:none;border-radius:4px;cursor:pointer}.modal-buttons .primary-button{background-color:#4a6baf;color:#fff}.error-toast{position:fixed;bottom:20px;left:50%;transform:translate(-50%) translateY(100px);background-color:#f44336;color:#fff;padding:12px 20px;border-radius:4px;box-shadow:0 4px 8px #0003;z-index:1100;transition:transform .3s ease;max-width:90%}.error-toast.show{transform:translate(-50%) translateY(0)}@keyframes shake{0%,to{transform:translate(0)}10%,30%,50%,70%,90%{transform:translate(-5px)}20%,40%,60%,80%{transform:translate(5px)}}@keyframes pulse{0%{opacity:1}50%{opacity:.7}to{opacity:1}}.player-selection-screen{display:flex;flex-direction:column;align-items:center;padding:20px;max-width:800px;margin:0 auto;height:100%}.player-selection-screen h2{margin-bottom:20px;color:#333}.player-list{width:100%;max-height:400px;overflow-y:auto;background-color:#fff;border-radius:8px;box-shadow:0 2px 8px #0000001a;margin-bottom:20px;padding:10px}.player-item{display:flex;justify-content:space-between;align-items:center;padding:12px 15px;border-bottom:1px solid #eee;transition:background-color .2s}.player-item:last-child{border-bottom:none}.player-item:hover{background-color:#f9f9f9}.player-name{font-weight:500;color:#333}.invite-button{background-color:#4a6baf;color:#fff;border:none;border-radius:4px;padding:6px 12px;cursor:pointer;transition:all .2s}.invite-button:hover{background-color:#3a5a9f;transform:translateY(-1px)}.no-players{padding:20px;text-align:center;color:#666;font-style:italic}.selection-controls{display:flex;gap:10px}.selection-controls button{padding:8px 16px;border:none;border-radius:4px;background-color:#f0f0f0;cursor:pointer;font-weight:500;transition:all .2s}.selection-controls button:hover{background-color:#e0e0e0}.loading-spinner{display:inline-block;width:50px;height:50px;border:3px solid rgba(0,0,0,.1);border-radius:50%;border-top-color:#4a6baf;animation:spin 1s ease-in-out infinite;margin:20px auto}@keyframes spin{to{transform:rotate(360deg)}}.error-modal .modal-content{background-color:#fff;border-top:4px solid #f44336;max-width:400px}.error-modal h3{color:#f44336;margin-top:0}.loading-message{position:fixed;top:0;left:0;right:0;bottom:0;background:#ffffffe6;display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:1000;font-size:18px}.loading-spinner{width:50px;height:50px;border:5px solid #f3f3f3;border-top:5px solid #3498db;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:20px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.connection-status{position:fixed;bottom:10px;right:10px;background-color:#000000b3;color:#fff;padding:8px 12px;border-radius:20px;font-size:14px;display:flex;align-items:center;z-index:1000}.status-indicator{width:10px;height:10px;border-radius:50%;margin-right:8px}.status-indicator.connected{background-color:#4caf50;box-shadow:0 0 5px #4caf50}.status-indicator.disconnected{background-color:#f44336;box-shadow:0 0 5px #f44336}