.draggable-piece{position:absolute;transition:left .3s ease,top .3s ease,opacity .3s ease;-webkit-user-select:none;user-select:none}.draggable-piece.dragging{transition:none;filter:drop-shadow(0 5px 15px rgba(0,0,0,.3))}.draggable-piece:not(.placed):hover{filter:brightness(1.1) drop-shadow(0 2px 5px rgba(0,0,0,.2))}.draggable-piece.placed{transition:transform .3s cubic-bezier(.68,-.55,.265,1.55);pointer-events:all}.draggable-piece.placed:hover{filter:brightness(.9)}@media (hover: none) and (pointer: coarse){.draggable-piece{touch-action:none}.draggable-piece:not(.placed):hover{filter:none}.draggable-piece.placed:hover{filter:none}.draggable-piece:not(.dragging):active{filter:brightness(1.1) drop-shadow(0 2px 5px rgba(0,0,0,.3));transform:scale(1.05)}.draggable-piece.placed:active{filter:brightness(.9);transform:scale(1.05)}}.share-button{padding:8px 16px;border:none;background-color:#3498db;color:#fff;border-radius:20px;font-weight:600;cursor:pointer;transition:all .2s ease;font-size:.85rem;height:36px;display:flex;align-items:center;white-space:nowrap;box-shadow:0 2px 6px #3498db33}.share-button:hover:not(:disabled){background:#2980b9;transform:translateY(-1px);box-shadow:0 4px 12px #3498db4d}.share-button:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}.share-button.copied{background-color:#2ecc71;color:#fff;box-shadow:0 2px 6px #2ecc7133}.share-button.copied:hover{background-color:#27ae60;box-shadow:0 4px 12px #2ecc714d}@media (max-width: 768px){.share-button{padding:6px 12px;font-size:.8rem;height:32px}}@media (max-width: 480px){.share-button{padding:5px 8px;font-size:.7rem;height:28px}}.size-selector{position:relative;display:inline-block}.size-selector-button{display:flex;align-items:center;justify-content:space-between;padding:8px 14px;min-width:80px;background:#6c757d;border:none;border-radius:20px;color:#fff;cursor:pointer;font-size:.85rem;font-weight:600;transition:all .2s ease;height:36px;box-shadow:0 2px 6px #6c757d33;white-space:nowrap}.size-selector-button:hover{background:#5a6268;transform:translateY(-1px);box-shadow:0 4px 12px #6c757d4d}.size-label{font-weight:600;font-size:.85rem}.dropdown-arrow{margin-left:6px;font-size:10px;color:#fffc}.size-options{position:absolute;top:100%;left:0;right:0;background:var(--dropdown-bg, #3a3a3a);border:1px solid var(--border-color, #666);border-radius:8px;box-shadow:0 4px 12px #0000004d;z-index:1000;overflow:visible;margin-top:4px}.size-option{display:flex;align-items:center;justify-content:center;width:100%;padding:8px 12px;background:transparent;border:none;color:var(--text-color, #b0b0b0);cursor:pointer;text-align:center;transition:background-color .2s;border-bottom:1px solid var(--border-color, #555);font-size:.85rem}.size-option:last-child{border-bottom:none}.size-option:hover{background:var(--button-hover-bg, #4a4a4a)}.size-option.selected{background:var(--button-active-bg, #5a5a5a)}@media (max-width: 768px){.size-selector-button{padding:6px 10px;min-width:70px;font-size:.8rem;height:32px}.size-label{font-size:.8rem}.dropdown-arrow{margin-left:4px;font-size:9px}.size-option{padding:6px 10px;font-size:.8rem}}@media (max-width: 480px){.size-selector-button{padding:5px 8px;min-width:60px;font-size:.7rem;height:28px}.size-label{font-size:.7rem}.dropdown-arrow{margin-left:3px;font-size:8px}.size-option{padding:5px 8px;font-size:.7rem}}.puzzle-game{width:100vw;height:100vh;display:flex;flex-direction:column;gap:8px;padding:5px;box-sizing:border-box}.puzzle-controls-bar{display:flex;justify-content:center;align-items:center;gap:8px;padding:6px 10px;flex-wrap:nowrap}.game-container{display:flex;align-items:center;justify-content:center;position:relative;width:100%;flex:1;padding:5px;overflow:hidden}.game-board{position:relative;background:var(--board-bg);padding:20px;border-radius:15px;box-shadow:0 10px 30px var(--shadow-color);border:1px solid var(--border-color);overflow:visible;margin:0 auto;text-align:center}.puzzle-grid{display:inline-block;border:3px solid var(--grid-border);background-color:var(--grid-bg);padding:5px;border-radius:8px;position:relative}.grid-row{display:flex}.grid-cell{border:2px solid var(--grid-cell-border);background-color:var(--grid-cell-bg);transition:all .2s ease;box-sizing:border-box}.grid-cell.occupied{border-color:var(--grid-cell-occupied)}.pieces-layer{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none}.pieces-layer>*{pointer-events:all}.completion-message{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:var(--completion-bg);padding:20px 30px;border-radius:15px;box-shadow:0 10px 30px var(--shadow-color);border:1px solid var(--border-light);font-size:1.5rem;color:var(--completion-text);font-weight:700;animation:bounce .5s ease-in-out;z-index:1000;pointer-events:none}@keyframes bounce{0%,to{transform:translate(-50%,-50%) scale(1)}50%{transform:translate(-50%,-50%) scale(1.05)}}.reset-button{background-color:var(--button-primary);color:var(--button-success-text);border:none;padding:8px 16px;font-size:.85rem;font-weight:600;border-radius:20px;cursor:pointer;transition:all .2s ease;box-shadow:0 2px 6px #4caf5033;height:36px;display:flex;align-items:center;white-space:nowrap}.reset-button:hover{background-color:var(--button-primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px #4caf504d}.reset-button:active{transform:translateY(0)}.control-buttons{display:flex;gap:8px;justify-content:center;align-items:center}.generate-button{border:none;padding:8px 16px;font-size:.85rem;border-radius:20px;cursor:pointer;transition:all .2s ease;font-weight:600;background-color:var(--button-secondary);color:var(--text-primary);box-shadow:0 2px 6px #2196f333;height:36px;display:flex;align-items:center;white-space:nowrap}.generate-button:hover{background-color:var(--button-secondary-hover);transform:translateY(-1px);box-shadow:0 4px 12px #2196f34d}.generate-button:active{transform:translateY(0)}@media (max-width: 1200px){.puzzle-game{padding:5px;gap:8px}.game-container{min-height:500px;padding:5px}.game-board{padding:15px}.puzzle-controls-bar{gap:6px;padding:5px 8px;overflow:visible}}@media (max-width: 768px){.puzzle-game{padding:4px;gap:6px}.game-container{min-height:400px;padding:4px;flex-direction:column}.game-board{padding:10px;margin-bottom:10px}.puzzle-grid{padding:3px}.puzzle-controls-bar{gap:4px;padding:4px 6px;overflow:visible}.control-buttons{gap:4px}.reset-button,.generate-button{padding:6px 12px;font-size:.8rem;height:32px}.completion-message{font-size:1.2rem;padding:15px 20px}}@media (max-width: 480px){.puzzle-game{padding:2px}.game-container{min-height:350px;padding:2px}.game-board{padding:6px}.puzzle-grid{padding:2px}.puzzle-controls-bar{gap:3px;padding:3px 4px;font-size:.75rem}.control-buttons{gap:3px}.reset-button,.generate-button{padding:5px 8px;font-size:.7rem;height:28px}.completion-message{font-size:1rem;padding:10px 14px}}@media (hover: none) and (pointer: coarse){.reset-button:hover,.generate-button:hover{transform:none;box-shadow:0 4px 15px #4caf504d}.reset-button:active,.generate-button:active{transform:scale(.95);transition:transform .1s ease}}:root{--piece-1: #FF6B6B;--piece-2: #4ECDC4;--piece-3: #45B7D1;--piece-4: #FFA07A;--piece-5: #98D8C8;--piece-6: #F7DC6F;--piece-7: #BB8FCE;--piece-8: #85C1E2;--text-color: #b0b0b0;--text-primary: #ffffff;--text-secondary: #888;--button-bg: #4a4a4a;--button-hover-bg: #555;--button-active-bg: #5a5a5a;--border-color: #666;--border-hover-color: #888;--dropdown-bg: #3a3a3a;--accent-color: #7fb3d3}.app{height:100vh;background:linear-gradient(135deg,#1a1a1a,#2d2d2d);color:var(--text-primary);overflow:hidden}.app-main{height:100vh;display:flex;flex-direction:column}:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;--bg-primary: #1a1a1a;--bg-secondary: #2d2d2d;--bg-tertiary: #404040;--text-primary: #ffffff;--text-secondary: #b0b0b0;--text-accent: #e0e0e0;--border-color: #555555;--border-light: #666666;--shadow-color: rgba(0, 0, 0, .5);--shadow-light: rgba(0, 0, 0, .3);--button-primary: #4CAF50;--button-primary-hover: #45a049;--button-secondary: #2196F3;--button-secondary-hover: #1976D2;--button-success: #4CAF50;--button-success-text: #ffffff;--grid-bg: #2d2d2d;--grid-border: #555555;--grid-cell-bg: #1a1a1a;--grid-cell-border: #666666;--grid-cell-occupied: #777777;--board-bg: #2d2d2d;--board-border: #555555;--completion-bg: rgba(45, 45, 45, .95);--completion-text: #4CAF50;color:var(--text-primary);background-color:var(--bg-primary)}body{margin:0;min-width:320px;min-height:100vh}#root{width:100%;height:100%}