.enhanced-app{min-height:100vh;padding:20px;max-width:1200px;margin:0 auto;position:relative;-webkit-user-select:none;user-select:none}.app-header{text-align:center;color:#fff;margin-bottom:20px}.app-header h1{font-size:2.2rem;margin-bottom:15px;text-shadow:2px 2px 4px rgba(0,0,0,.3);background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.score-display{display:flex;justify-content:center;gap:20px;flex-wrap:wrap;margin-bottom:10px}.score-item{background:#ffffff26;padding:8px 16px;border-radius:20px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.score-label{font-size:.8rem;opacity:.8;margin-right:8px}.score-value{font-size:1.1rem;font-weight:700}.bonus-score{background:linear-gradient(135deg,#f093fb,#f5576c);animation:pulse-glow 2s ease-in-out infinite}@keyframes pulse-glow{0%,to{box-shadow:0 0 5px #f5576c80}50%{box-shadow:0 0 20px #f5576ccc}}.nickname-display{font-size:.9rem;opacity:.9}.edit-nickname-btn{background:none;border:none;cursor:pointer;font-size:1rem;padding:2px 6px;margin-left:5px;opacity:.7;transition:opacity .2s}.edit-nickname-btn:hover{opacity:1}.game-container{display:flex;flex-direction:column;align-items:center;gap:25px}.board-container{background:#fff;padding:15px;border-radius:12px;box-shadow:0 10px 40px #00000040}.board{display:inline-block;border:3px solid #333;border-radius:4px;overflow:hidden}.board-row{display:flex}.cell{width:42px;height:42px;border:1px solid #e0e0e0;cursor:pointer;transition:all .15s ease;position:relative;display:flex;align-items:center;justify-content:center}.cell.empty{background-color:#f8f9fa}.cell.empty:hover{background-color:#e9ecef}.cell.hint{position:relative}.cell.empty.hint{background-color:#e8f4ff}.cell.hint:after{content:"";position:absolute;width:14px;height:14px;background:linear-gradient(135deg,#4a90e2,#667eea);border-radius:50%;animation:hint-pulse 1.5s ease-in-out infinite;z-index:10}@keyframes hint-pulse{0%,to{transform:scale(.8);opacity:.6}50%{transform:scale(1.1);opacity:1}}.cell.hint-clearable{position:relative}.cell.empty.hint-clearable{background-color:#fff8e8}.cell.hint-clearable:after{content:"";position:absolute;width:14px;height:14px;background:linear-gradient(135deg,#f59e0b,#ef4444);border-radius:50%;animation:hint-clearable-pulse 1s ease-in-out infinite;z-index:10}@keyframes hint-clearable-pulse{0%,to{transform:scale(.9);opacity:.7;box-shadow:0 0 5px #f59e0b80}50%{transform:scale(1.2);opacity:1;box-shadow:0 0 12px #f59e0bcc}}.cell.empty.preview{border:3px solid rgba(0,0,0,.4);box-shadow:inset 0 0 15px #fff9;animation:preview-pulse .6s ease-in-out infinite}@keyframes preview-pulse{0%,to{filter:brightness(1)}50%{filter:brightness(1.15)}}.cell.empty.solution{background:linear-gradient(135deg,#dbeafe,#bfdbfe);border:2px solid #60a5fa}.solution-label{font-size:.9rem;font-weight:700;color:#1d4ed8;text-shadow:0 1px 2px rgba(255,255,255,.8)}.cell.occupied{border-radius:3px;box-shadow:inset 0 -2px 4px #00000026}.blocks-container{background:#fff;padding:20px;border-radius:12px;box-shadow:0 8px 30px #0003;width:100%;max-width:550px}.blocks-container h3{margin-bottom:15px;text-align:center;color:#374151;font-size:.95rem}.blocks-list{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}.block-item{padding:12px;border:2px solid #e5e7eb;border-radius:10px;cursor:grab;transition:all .2s ease;text-align:center;background:#fafafa;touch-action:none}.block-item:hover{border-color:#667eea;transform:translateY(-3px);box-shadow:0 6px 15px #667eea4d}.block-item:active{cursor:grabbing;transform:scale(.95)}.block-item.selected{border-color:#667eea;background:linear-gradient(135deg,#eef2ff,#e0e7ff);box-shadow:0 4px 15px #667eea66}.block-item.dragging-source{opacity:.4;transform:scale(.9)}.block-preview{display:grid;--cell-size: 22px;gap:2px;margin-bottom:8px;justify-content:center}.block-cell{border-radius:3px;box-shadow:inset 0 -1px 2px #0000001a}.block-name{font-size:.8rem;color:#6b7280;font-weight:500}.dragging-block{position:fixed;display:grid;gap:2px;pointer-events:none;z-index:1000;opacity:.85;transform:scale(1.05);transform-origin:top left;filter:drop-shadow(0 8px 20px rgba(0,0,0,.3))}.dragging-cell{border-radius:4px;box-shadow:inset 0 -2px 4px #00000026}.controls{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}.controls button{padding:12px 20px;font-size:.95rem;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:25px;cursor:pointer;transition:all .2s ease;font-weight:500;box-shadow:0 4px 15px #667eea66}.controls button:hover{transform:translateY(-2px);box-shadow:0 6px 20px #667eea80}.controls button:active{transform:translateY(0)}.controls button:disabled{opacity:.5;cursor:not-allowed;transform:none}.controls button.sound-toggle{padding:12px 16px;min-width:auto}.toast-container{position:fixed;top:80px;left:50%;transform:translate(-50%);z-index:1100;display:flex;flex-direction:column;gap:8px;pointer-events:none}.toast{background:#fffffff2;padding:10px 20px;border-radius:25px;box-shadow:0 4px 20px #0003;display:flex;align-items:center;gap:8px;animation:toast-in .3s ease-out,toast-out .3s ease-in 2.2s forwards;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.toast-praise{border-left:4px solid #10b981}.toast-combo{border-left:4px solid #f59e0b;background:linear-gradient(90deg,#f59e0b1a,#fffffff2)}.toast-milestone{border-left:4px solid #8b5cf6;background:linear-gradient(90deg,#8b5cf61a,#fffffff2)}.toast-surprise,.toast-bonus{border-left:4px solid #ec4899;background:linear-gradient(90deg,#ec489926,#fffffff2);font-weight:600}.toast-tip{border-left:4px solid #6b7280;font-size:.9rem}.toast-emoji{font-size:1.2rem}.toast-text{color:#1f2937;font-weight:500}@keyframes toast-in{0%{opacity:0;transform:translateY(-20px) scale(.9)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes toast-out{0%{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(-10px) scale(.95)}}.score-popup{position:fixed;font-size:1.3rem;font-weight:700;color:#10b981;text-shadow:0 2px 4px rgba(0,0,0,.2);pointer-events:none;z-index:1050;animation:score-float 1.5s ease-out forwards;transform:translate(-50%,-50%)}.score-popup.bonus{font-size:1.8rem;color:#ec4899;text-shadow:0 0 10px rgba(236,72,153,.5);animation:bonus-float 1.5s ease-out forwards}@keyframes score-float{0%{opacity:1;transform:translate(-50%,-50%) scale(1)}50%{opacity:1;transform:translate(-50%,-100%) scale(1.2)}to{opacity:0;transform:translate(-50%,-150%) scale(.8)}}@keyframes bonus-float{0%{opacity:1;transform:translate(-50%,-50%) scale(1) rotate(0)}25%{transform:translate(-50%,-80%) scale(1.4) rotate(-5deg)}50%{transform:translate(-50%,-100%) scale(1.3) rotate(5deg)}to{opacity:0;transform:translate(-50%,-150%) scale(.9) rotate(0)}}.game-over-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:1200;animation:fade-in .3s ease-out}.game-over-card{background:#fff;padding:35px 45px;border-radius:20px;text-align:center;box-shadow:0 20px 60px #0006;animation:scale-in .3s ease-out}.game-over-card h2{font-size:1.8rem;margin-bottom:20px;color:#1f2937}.final-score{margin-bottom:20px;font-size:1.1rem;color:#4b5563}.bonus-final{color:#ec4899;font-weight:600}.total-final{font-size:1.4rem;font-weight:700;color:#1f2937;margin-top:10px;padding-top:10px;border-top:2px dashed #e5e7eb}.new-high-score{font-size:1.3rem;color:#f59e0b;font-weight:700;margin-bottom:20px;animation:celebrate .5s ease-in-out infinite alternate}@keyframes celebrate{0%{transform:scale(1)}to{transform:scale(1.1)}}.game-over-card button{padding:14px 35px;font-size:1.1rem;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:30px;cursor:pointer;font-weight:600;box-shadow:0 4px 15px #667eea66;transition:all .2s ease}.game-over-card button:hover{transform:scale(1.05);box-shadow:0 6px 20px #667eea80}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes scale-in{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;align-items:center;justify-content:center;z-index:1200;padding:20px;animation:fade-in .2s ease-out}.modal-card{background:#fff;border-radius:16px;padding:28px;width:min(480px,90vw);box-shadow:0 20px 50px #00000059;animation:scale-in .2s ease-out}.modal-card h2{margin-bottom:12px;color:#1f2937;font-size:1.4rem}.modal-card p{margin-bottom:18px;color:#6b7280;font-size:.95rem}.modal-card input{width:100%;padding:14px 16px;border:2px solid #e5e7eb;border-radius:10px;font-size:1rem;transition:border-color .2s;box-sizing:border-box}.modal-card input:focus{outline:none;border-color:#667eea}.modal-error{margin-top:10px;color:#ef4444;font-size:.9rem}.modal-actions{margin-top:22px;display:flex;justify-content:flex-end;gap:12px}.modal-actions button{padding:12px 24px;border:none;border-radius:25px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;cursor:pointer;font-weight:500;transition:all .2s ease}.modal-actions button:hover{transform:scale(1.03)}.leaderboard-card{width:min(580px,92vw);max-height:80vh;overflow-y:auto}.leaderboard-section{margin-top:18px}.leaderboard-section h3{margin-bottom:12px;color:#374151;font-size:1.1rem}.leaderboard-section ol{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.leaderboard-section li{display:flex;align-items:center;background:linear-gradient(90deg,#f9fafb,#f3f4f6);padding:12px 16px;border-radius:10px;font-weight:500}.leaderboard-section li .rank{width:28px;height:28px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:600;margin-right:12px}.leaderboard-section li:nth-child(1) .rank{background:linear-gradient(135deg,#fbbf24,#f59e0b)}.leaderboard-section li:nth-child(2) .rank{background:linear-gradient(135deg,#9ca3af,#6b7280)}.leaderboard-section li:nth-child(3) .rank{background:linear-gradient(135deg,#d97706,#b45309)}.leaderboard-section li .name{flex:1;color:#1f2937}.leaderboard-section li .score{font-weight:700;color:#667eea;font-size:1.05rem}.leaderboard-empty{color:#9ca3af;font-size:.95rem;text-align:center;padding:20px}@media (max-width: 600px){.enhanced-app{padding:12px}.app-header h1{font-size:1.8rem}.score-display{gap:10px}.score-item{padding:6px 12px}.cell{width:36px;height:36px}.block-preview{--cell-size: 18px}.controls button{padding:10px 16px;font-size:.9rem}.toast{padding:8px 16px;font-size:.9rem}.dragging-block{grid-template-columns:repeat(auto-fill,25px)!important;grid-template-rows:repeat(auto-fill,25px)!important}}@media (max-width: 400px){.cell{width:32px;height:32px}.block-preview{--cell-size: 16px}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh}#root{min-height:100vh}