body{margin:0;padding:0;background-color:#1a1a2e;color:#eee;font-family:Arial,sans-serif;display:flex;flex-direction:column;align-items:center;min-height:100vh;overflow-x:hidden}h1{margin:10px 0;text-align:center;color:#e94560;font-size:24px}.game-title{position:absolute;top:20px;left:20px;margin:0;text-align:left;font-size:20px;z-index:100}.game-container{display:flex;flex-direction:column;gap:0;padding:10px;width:100%;height:calc(100vh - 60px);box-sizing:border-box}.canvas-container{position:relative;display:flex;align-items:center;justify-content:center;flex:1;min-width:0;overflow:hidden}#gameCanvas{border:2px solid #0f3460;border-radius:4px;display:block;width:100%;height:100%}.control-panel{background-color:#16213e;border-top:2px solid #0f3460;border-radius:8px 8px 0 0;padding:10px;display:flex;align-items:center;gap:10px;height:180px;min-height:120px;max-height:200px;flex-shrink:0}.more-pieces-button{background-color:#e94560;color:#eee;border:none;padding:10px 20px;border-radius:4px;cursor:pointer;font-size:16px;transition:opacity .2s;flex-shrink:0;margin-left:10px}.more-pieces-button:hover{opacity:.8}.more-pieces-button:active{opacity:.6;transform:scale(.98)}.more-pieces-button:disabled{opacity:.5;cursor:not-allowed}.piece-panel{flex:1;display:flex;align-items:center;justify-content:center;min-width:0;height:100%}.pieces-container{display:flex;align-items:center;gap:8px;height:100%;padding:5px;overflow:hidden}.draggable-piece{position:relative;cursor:grab;transition:transform .2s;flex:1;min-width:0;height:60px;max-width:80px}.draggable-piece:hover{transform:scale(1.05)}.draggable-piece.dragging{opacity:.5;cursor:grabbing}.draggable-piece.empty-slot{opacity:.3;cursor:default;pointer-events:none}.draggable-piece canvas,.draggable-piece svg{display:block;border:none;border-radius:0;background-color:transparent;width:100%;height:100%}.drag-preview{opacity:.9;transition:none}.drag-preview canvas{display:block;border:none;border-radius:0;background-color:transparent}.bottom-controls{display:flex;flex-direction:column;gap:8px;align-items:center;flex-shrink:0;min-width:120px}.bottom-controls button{padding:8px 16px;font-size:14px;width:100px}.bottom-controls .solution-status{font-size:12px;text-align:center;margin:0}.hamburger-menu-container{position:relative}.canvas-container .hamburger-menu-container,.difficulty-screen .hamburger-menu-container{position:absolute;top:10px;right:10px;z-index:100}.hamburger-button{padding:8px 12px;font-size:20px;line-height:1;min-width:auto;width:auto;background-color:#16213e;border:2px solid #0f3460;border-radius:4px;cursor:pointer}.hamburger-button:hover{background-color:#1a4a7a;border-color:#e94560}.hamburger-dropdown{position:absolute;top:100%;right:0;margin-top:5px;background-color:#16213e;border:2px solid #0f3460;border-radius:8px;padding:8px;min-width:150px;box-shadow:0 4px 10px #0000004d;z-index:100}.hamburger-dropdown button{width:100%;margin-bottom:5px}.hamburger-dropdown button:last-child{margin-bottom:0}#piecePreview{border:2px solid #0f3460;border-radius:4px;display:block}.controls{background-color:#16213e;padding:20px;border-radius:8px;display:flex;flex-direction:column;gap:15px;width:220px;flex-shrink:0}button{background-color:#e94560;color:#eee;border:none;padding:10px 20px;border-radius:4px;cursor:pointer;font-size:16px;transition:opacity .2s}button:hover{opacity:.8}button:active{opacity:.6;transform:scale(.98)}button:disabled{opacity:.5;cursor:not-allowed}.piece-info{text-align:center}.solution-status{color:#f39c12;font-style:italic;text-align:center;margin-top:10px}.instructions{font-size:14px;line-height:1.5}.piece-navigation{display:flex;align-items:center;justify-content:center;gap:5px;margin-bottom:10px;flex-wrap:nowrap}.piece-nav-button{cursor:pointer;border:2px solid #0f3460;border-radius:6px;padding:3px;background-color:#16213e;transition:all .2s;display:flex;align-items:center;justify-content:center;flex-shrink:0}.piece-nav-button:hover{border-color:#e94560;background-color:#1a4a7a;transform:scale(1.05)}.piece-nav-button:active{transform:scale(.95)}.piece-nav-button.disabled{opacity:.3;cursor:not-allowed;pointer-events:none}.piece-nav-button canvas{display:block}.difficulty-screen{background-color:#16213e;padding:40px;border-radius:12px;text-align:center;max-width:500px;margin:20px;position:relative}.difficulty-screen h2{color:#e94560;margin-bottom:30px}.difficulty-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:15px;margin-bottom:30px}.difficulty-card{background-color:#0f3460;padding:20px;border-radius:8px;cursor:pointer;transition:transform .2s,background-color .2s;position:relative}.difficulty-card:hover{transform:scale(1.05);background-color:#1a4a7a}.difficulty-card h3{color:#f39c12;margin:0 0 10px}.difficulty-card p{margin:0;font-size:14px;color:#aaa}.difficulty-card.recommended{border:2px solid #f39c12;background-color:#1a4a7a}.recommended-badge{position:absolute;top:-8px;right:-8px;background-color:#f39c12;color:#1a1a2e;padding:4px 8px;border-radius:4px;font-size:12px;font-weight:700}.custom-form{display:grid;grid-template-columns:auto auto auto auto auto;gap:10px;align-items:center;justify-content:center;margin-top:20px;position:relative}.custom-form input{background-color:#0f3460;border:1px solid #2a5080;color:#eee;padding:8px 12px;border-radius:4px;width:80px;font-size:14px;transition:border-color .2s,background-color .2s}.custom-form input:invalid{border-color:#e94560;background-color:#e945601a}.custom-form input:valid{border-color:#2a5080;background-color:#0f3460}.custom-form label{font-size:14px}.error-message{display:none;color:#e94560;font-size:12px;white-space:nowrap;grid-column:1 / -1;text-align:center;margin-top:-5px}.error-message[data-for=customRadius]{grid-row:2}.error-message[data-for=customPieces]{grid-row:3}.custom-form:has(#customRadius:invalid:focus) .error-message[data-for=customRadius],.custom-form:has(#customRadius:invalid:not(:placeholder-shown)) .error-message[data-for=customRadius]{display:block}.custom-form:has(#customPieces:invalid:focus) .error-message[data-for=customPieces],.custom-form:has(#customPieces:invalid:not(:placeholder-shown)) .error-message[data-for=customPieces]{display:block}.custom-form button[type=submit]{background-color:#e94560;color:#fff;border:none;padding:10px 20px;border-radius:4px;cursor:pointer;font-size:14px;transition:opacity .2s}.custom-form:invalid button[type=submit]{opacity:.5;cursor:not-allowed;pointer-events:none}.hidden{display:none!important}.mobile-controls{display:none;position:fixed;bottom:0;left:0;right:0;background-color:#16213e;padding:10px;border-top:2px solid #0f3460}.mobile-controls-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;max-width:300px;margin:0 auto}.mobile-controls button{padding:15px 10px;font-size:14px}@media (min-aspect-ratio: 1 / 1){.game-container{flex-direction:row;height:100vh;height:100dvh;padding:0}.canvas-container{flex:1;height:100%}.control-panel{width:200px;height:100vh;height:100dvh;min-height:auto;max-height:100vh;max-height:100dvh;flex-direction:column;padding:15px;gap:15px;overflow-y:auto;box-sizing:border-box}.piece-panel{flex:1;flex-direction:column;align-items:center;gap:15px;min-height:0;overflow-y:auto}.pieces-container{flex-direction:column;gap:15px;padding:10px;align-items:center}.draggable-piece{height:80px;width:80px;max-width:80px}.bottom-controls{flex:0 0 auto;flex-direction:column;gap:10px;padding:0;width:100%;margin-top:auto}.bottom-controls button{width:100%;padding:12px;font-size:14px;height:45px}.more-pieces-button{padding:8px 16px;font-size:14px;height:40px}}@media (max-aspect-ratio: 1 / 1){body{min-height:100vh;min-height:100dvh}.more-pieces-button{padding:6px 12px;font-size:12px;margin-left:6px}.game-container{flex-direction:column;padding:0;height:100vh;height:100dvh}.controls,.mobile-controls{display:none}.control-panel{height:20vh;min-height:120px;max-height:160px;padding:8px 8px 0;gap:8px;flex-direction:column}.piece-panel{flex:1;display:flex;align-items:center;justify-content:center;min-width:0}.pieces-container{gap:8px;padding:5px;flex:1;display:flex;align-items:center;justify-content:center;min-width:0}.draggable-piece{height:80px;max-width:none}.bottom-controls{flex:1;flex-direction:row;justify-content:center;align-items:center;gap:6px;width:100%;padding:0 8px 8px;padding-bottom:calc(8px + env(safe-area-inset-bottom))}.bottom-controls button{padding:8px 12px;font-size:12px;min-width:60px;flex:1;height:40px}.difficulty-screen{padding:10px;margin:5px;max-height:calc(100vh - 50px);max-height:calc(100dvh - 50px);overflow-y:auto;box-sizing:border-box}.difficulty-screen h2{margin-bottom:10px;font-size:18px}.difficulty-options{grid-template-columns:1fr;gap:8px;margin-bottom:10px}.difficulty-card{padding:12px}.difficulty-card h3{font-size:15px;margin:0 0 5px}.difficulty-card p{font-size:12px;margin:0}.custom-form{grid-template-columns:auto 1fr auto 1fr auto;gap:5px;margin-top:10px;align-items:center}.custom-form input{width:50px;padding:4px 6px;font-size:12px}.custom-form button{padding:4px 8px;font-size:12px}.canvas-container{width:100%;height:calc(80vh - 40px);min-height:250px}}.modal{position:fixed;top:0;left:0;width:100%;height:100%;z-index:1000}.modal-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background-color:#0009}.modal-content{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background-color:#16213e;padding:30px;border-radius:12px;box-shadow:0 4px 20px #0000004d;max-width:500px;width:90%;max-height:80vh;overflow-y:auto}.modal-content h2{color:#e94560;margin-top:0;margin-bottom:20px;text-align:center}.shortcuts-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:15px;margin-bottom:20px}.shortcut-item{display:flex;align-items:center;gap:15px;padding:10px;background-color:#0f3460;border-radius:6px}.shortcut-item .key{display:inline-block;min-width:40px;padding:6px 12px;background-color:#1a4a7a;border-radius:4px;font-weight:700;text-align:center;font-family:monospace;font-size:16px}.shortcut-item .description{flex:1;font-size:14px}.modal-footer{text-align:center;margin-top:20px;display:flex;justify-content:space-between;align-items:center}.dont-show-again{display:flex;align-items:center;gap:8px;color:#8899a6;font-size:14px;cursor:pointer}.dont-show-again input[type=checkbox]{cursor:pointer}@media (max-width: 768px){.shortcuts-grid{grid-template-columns:1fr}}.instructions-content{text-align:left}.instruction-section{margin-bottom:25px}.instruction-section h3{color:#f39c12;margin-bottom:10px;margin-top:0;font-size:18px}.instruction-section p{margin-bottom:15px;line-height:1.6;color:#ddd}.instruction-section ul{margin:0 0 10px;padding-left:20px}.instruction-section li{margin-bottom:8px;line-height:1.5;color:#ddd}.instruction-section strong{color:#e94560}.victory-screen{position:fixed;top:0;left:0;width:100%;height:100%;z-index:2000;background:#000000d9;display:flex;align-items:center;justify-content:center;animation:fadeIn .5s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.victory-content{background:linear-gradient(135deg,#16213e,#0f3460);padding:60px;border-radius:20px;text-align:center;box-shadow:0 10px 50px #00000080;border:3px solid #e94560;max-width:500px;width:90%;max-height:95vh;overflow-y:auto;animation:victoryBounce .8s ease-out;display:flex;flex-direction:column;justify-content:space-evenly;min-height:0}@keyframes victoryBounce{0%{transform:scale(0) rotate(-180deg);opacity:0}50%{transform:scale(1.1) rotate(5deg)}75%{transform:scale(.95) rotate(-2deg)}to{transform:scale(1) rotate(0);opacity:1}}.victory-title{font-size:48px;color:#e94560;margin:0 0 20px;text-shadow:0 0 20px rgba(233,69,96,.5);animation:victoryPulse 2s infinite}@keyframes victoryPulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.victory-message{font-size:24px;color:#f39c12;margin-bottom:40px}.victory-stats{display:flex;justify-content:center;gap:40px;margin-bottom:40px}.stat-item{background:#0f346099;padding:20px 30px;border-radius:10px;border:2px solid #2a5080}.stat-label{display:block;font-size:16px;color:#aaa;margin-bottom:5px}.stat-value{display:block;font-size:32px;font-weight:700;color:#3498db}.victory-buttons{display:flex;gap:20px;justify-content:center;flex-wrap:wrap}.victory-button{padding:15px 30px;font-size:18px;border-radius:8px;transition:all .3s}.victory-button.primary{background:linear-gradient(135deg,#e94560,#c0392b);box-shadow:0 4px 15px #e945604d}.victory-button.primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #e9456066}@media (max-width: 768px){.victory-content{padding:25px 18px;max-height:92vh;overflow-y:auto;margin:4vh auto;justify-content:space-evenly}.victory-title{font-size:32px;margin-bottom:15px;flex-shrink:0}.victory-message{font-size:18px;margin-bottom:25px;flex-shrink:0}.victory-stats{flex-direction:column;gap:18px;margin-bottom:25px;flex-grow:1;justify-content:center}.stat-item{padding:16px 20px}.stat-label{font-size:14px;margin-bottom:4px}.stat-value{font-size:26px}.victory-buttons{flex-direction:column;width:100%;gap:15px;flex-shrink:0}.victory-button{width:100%;padding:14px 20px;font-size:16px}}@media (max-height: 600px) and (orientation: landscape){.victory-content{padding:20px;max-height:85vh}.victory-title{font-size:28px;margin-bottom:10px}.victory-message{font-size:16px;margin-bottom:20px}.victory-stats{flex-direction:row;gap:20px;margin-bottom:20px}.stat-item{padding:10px 15px}.stat-label{font-size:12px;margin-bottom:2px}.stat-value{font-size:20px}.victory-buttons{flex-direction:row;gap:15px}.victory-button{width:auto;padding:10px 20px;font-size:14px}}@media (max-width: 480px) and (max-height: 700px){.victory-content{padding:12px 10px;max-height:85vh;margin:1vh auto}.victory-title{font-size:22px;margin-bottom:6px}.victory-message{font-size:13px;margin-bottom:12px}.victory-stats{gap:8px;margin-bottom:12px;grid-template-columns:1fr 1fr}.stat-item{padding:6px 8px}.stat-label{font-size:11px}.stat-value{font-size:18px}.victory-buttons{gap:8px}.victory-button{padding:8px 12px;font-size:14px}}