.menu-container{position:relative;z-index:1000}.logo-menu-button{width:60px;height:60px;background:transparent;border:2px solid rgba(76,175,80,.3);border-radius:12px;cursor:pointer;display:flex;justify-content:center;align-items:center;padding:8px;transition:all .3s ease;box-shadow:0 4px 15px #4caf5033}.logo-menu-button:hover{transform:scale(1.05);box-shadow:0 6px 20px #4caf5066;border-color:#4caf5099}.logo-menu-button.open{border-color:#4caf50cc;box-shadow:0 6px 20px #4caf5099}.logo-menu-icon{width:100%;height:100%;object-fit:contain}.menu-backdrop{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;z-index:998;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.menu-dropdown{position:absolute;top:60px;left:0;background:linear-gradient(135deg,#2d2d2d,#1a1a1a);border-radius:12px;box-shadow:0 8px 32px #00000080;border:2px solid rgba(255,255,255,.1);overflow:hidden;min-width:200px;animation:slideDown .3s ease;z-index:999}@keyframes 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p{color:#ccc;line-height:1.6;margin:0;font-size:1rem}.modal-section ul{margin:10px 0 0;padding-left:25px;color:#ccc}.modal-section li{margin-bottom:8px;line-height:1.6}.modal-section strong{color:#fff;font-weight:600}.how-to-play-modal::-webkit-scrollbar{width:8px}.how-to-play-modal::-webkit-scrollbar-track{background:#ffffff0d;border-radius:4px}.how-to-play-modal::-webkit-scrollbar-thumb{background:#4caf5080;border-radius:4px}.how-to-play-modal::-webkit-scrollbar-thumb:hover{background:#4caf50b3}@media (max-width: 768px){.how-to-play-modal{max-width:90%;padding:30px 20px}.how-to-play-modal h2{font-size:2rem}.modal-section h3{font-size:1.1rem}}.leaderboard-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;padding:1rem}.leaderboard-modal{background:#fff;border-radius:12px;padding:2rem;max-width:600px;width:100%;max-height:80vh;overflow-y:auto;position:relative;box-shadow:0 10px 40px #0000004d}body.dark-mode .leaderboard-modal{background:#2d2d2d;color:#fff}.leaderboard-modal h2{margin:0 0 1.5rem;color:#333;text-align:center}body.dark-mode .leaderboard-modal h2{color:#fff}.grid-size-tabs{display:flex;gap:.5rem;margin-bottom:1rem;justify-content:center}.grid-size-tab{min-width:70px;padding:.5rem 1rem;border:2px solid #ddd;background:#fff;border-radius:8px;cursor:pointer;font-weight:500;transition:all .2s;font-size:.95rem}.grid-size-tab:hover{border-color:#4caf50;background:#f0fff4}.grid-size-tab.active{background:linear-gradient(135deg,#4caf50,#64b5f6);border-color:#4caf50;color:#fff}body.dark-mode .grid-size-tab{background:#1a1a1a;border-color:#444;color:#fff}body.dark-mode .grid-size-tab:hover{border-color:#4caf50;background:#333}body.dark-mode .grid-size-tab.active{background:linear-gradient(135deg,#4caf50,#64b5f6);border-color:#4caf50}.period-tabs{display:flex;gap:.5rem;margin-bottom:1.5rem;flex-wrap:wrap}.period-tab{flex:1;min-width:80px;padding:.5rem 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.leaderboard-row.current-user{background:#667eea33}.col-player{display:flex;align-items:center;gap:.5rem;overflow:hidden}.player-avatar{width:28px;height:28px;border-radius:50%;object-fit:cover;flex-shrink:0}.player-avatar-placeholder{width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.875rem;flex-shrink:0}.player-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#333}body.dark-mode .player-name{color:#fff}.col-rank{font-weight:600;font-size:1.1rem}.col-score{font-weight:600;color:#667eea}body.dark-mode .col-score{color:#8fa6ff}.col-time{font-size:.875rem;color:#666}body.dark-mode .col-time{color:#aaa}@media (max-width: 600px){.leaderboard-header,.leaderboard-row{grid-template-columns:50px 1fr 90px;gap:.25rem;padding:.5rem;font-size:.875rem}.grid-size-tab{min-width:60px;padding:.4rem .75rem;font-size:.85rem}.period-tab{min-width:70px;padding:.4rem .75rem;font-size:.875rem}}.level-select-container{margin:2rem 0;animation:fadeIn 1s ease-out .5s both}.level-select-title{font-size:1.2rem;color:#ccc;margin-bottom:1rem;font-weight:500}.level-select-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.level-button{flex:1;min-width:100px;max-width:140px;padding:1rem .75rem;background:#ffffff0d;border:2px solid rgba(255,255,255,.2);border-radius:12px;cursor:pointer;transition:all .3s ease;color:#ccc}.level-button:hover{background:#ffffff1a;border-color:#fff6;transform:translateY(-2px)}.level-button.selected{background:linear-gradient(135deg,#4caf504d,#64b5f64d);border-color:#4caf50;color:#fff}.level-button.selected:hover{background:linear-gradient(135deg,#4caf5066,#64b5f666);border-color:#64b5f6}.level-label{font-size:1.1rem;font-weight:600;margin-bottom:.25rem}.level-description{font-size:.85rem;opacity:.8}@media (max-width: 768px){.level-select-buttons{flex-direction:row}.level-button{min-width:90px;max-width:120px;padding:.875rem .5rem}.level-label{font-size:1rem}.level-description{font-size:.75rem}}.auth-button{display:flex;align-items:center;justify-content:center;gap:.5rem;padding:.5rem}.auth-button.loading{opacity:.6}.auth-button.authenticated{background:#ffffff1a;border-radius:8px;padding:.5rem 1rem;flex-wrap:wrap;justify-content:space-between}.user-info{display:flex;align-items:center;gap:.75rem}.user-avatar{width:32px;height:32px;border-radius:50%;object-fit:cover}.user-avatar-placeholder{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.2rem}.user-name{font-weight:500;color:#333;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}body.dark-mode .user-name{color:#fff}.sign-out-button{background:#0000001a;border:none;padding:.5rem 1rem;border-radius:4px;cursor:pointer;font-size:.875rem;color:#333;transition:background .2s}.sign-out-button:hover{background:#0003}body.dark-mode .sign-out-button{color:#fff;background:#ffffff1a}body.dark-mode .sign-out-button:hover{background:#fff3}.google-signin-button{display:flex;justify-content:center;align-items:center}.splash-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1a1a1a,#2d2d2d);padding:2rem}.splash-content{text-align:center;max-width:500px;background:#ffffff0d;padding:3rem 2rem;border-radius:20px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:2px solid rgba(255,255,255,.1);box-shadow:0 20px 60px #00000080}.splash-logo{max-width:200px;width:100%;height:auto;margin-bottom:1rem;animation:fadeInDown .8s ease-out}.splash-title{font-size:3rem;margin:0 0 .5rem;background:linear-gradient(45deg,#4caf50,#64b5f6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:fadeIn 1s ease-out .2s both}.splash-tagline{font-size:1.3rem;color:#999;margin:0 0 2rem;animation:fadeIn 1s ease-out .4s both}.splash-auth{margin:2rem 0;animation:fadeIn 1s ease-out .6s both}.splash-description{font-size:1rem;color:#ccc;margin:2rem 0 0;line-height:1.6;animation:fadeIn 1s ease-out .8s both}.play-as-guest-btn{margin-top:2rem;padding:.75rem 2rem;background:transparent;border:2px solid rgba(255,255,255,.3);color:#ccc;font-size:1rem;border-radius:8px;cursor:pointer;transition:all .3s;animation:fadeIn 1s ease-out 1s both}.play-as-guest-btn:hover{border-color:#fff9;color:#fff;background:#ffffff0d}.guest-note{font-size:.85rem;color:#777;margin-top:1rem;animation:fadeIn 1s ease-out 1.2s both}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes 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.value.time{color:#64b5f6;font-family:Courier New,monospace}.info-item .value.score{color:#4caf50}.status-banner{margin-bottom:20px;padding:10px 30px;border-radius:8px;background:#ffffff1a}.status-text{font-size:1.2rem;font-weight:600;text-transform:uppercase;letter-spacing:2px}.status-not_started{color:#64b5f6}.status-playing{color:#4caf50}.status-paused{color:#ffa726}.status-game_over{color:#ef5350}.status-won{color:#ffd54f}.hint-mode-toggle{margin:20px 0;display:flex;justify-content:center}.toggle-label{display:flex;align-items:center;gap:12px;cursor:pointer;padding:10px 20px;background:#ff6b001a;border:2px solid rgba(255,107,0,.3);border-radius:25px;transition:all .3s ease}.toggle-label:hover{background:#ff6b0033;border-color:#ff6b0080}.toggle-checkbox{width:20px;height:20px;cursor:pointer;accent-color:#FF6B00}.toggle-text{color:#ffa726;font-weight:600;text-transform:uppercase;letter-spacing:1px;font-size:.9rem}.canvas-container{margin-bottom:30px;padding:20px;background:#0000004d;border-radius:16px;box-shadow:0 8px 32px #0000004d}.game-controls{display:flex;gap:15px;margin-bottom:30px}.btn{padding:12px 30px;font-size:1rem;font-weight:600;border:none;border-radius:8px;cursor:pointer;transition:all .3s ease;text-transform:uppercase;letter-spacing:1px}.btn-primary{background:linear-gradient(45deg,#4caf50,#66bb6a);color:#fff;box-shadow:0 4px 15px #4caf5066}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #4caf5099}.btn-secondary{background:#ffffff1a;color:#fff;border:2px solid 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0;font-size:1.1rem;color:#ccc}.final-stats strong{color:#4caf50;font-size:1.3rem}.shuffle-notification{position:fixed;bottom:30px;left:50%;transform:translate(-50%);z-index:2000;animation:shuffleSlideUp .3s ease}@keyframes shuffleSlideUp{0%{transform:translate(-50%) translateY(20px);opacity:0}to{transform:translate(-50%) translateY(0);opacity:1}}.shuffle-content{background:#ff6b00e6;color:#fff;padding:12px 24px;border-radius:8px;font-size:.95rem;font-weight:600;box-shadow:0 4px 12px #0000004d;border:1px solid rgba(255,255,255,.2);text-align:center;letter-spacing:.5px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.auth-container{margin-top:15px}.auth-prompt{color:#ffd54f;font-size:.95rem;margin:15px 0;padding:10px;background:#ffd54f1a;border-radius:8px}.success-message{color:#4caf50;font-size:1rem;font-weight:600;margin:15px 0;padding:10px;background:#4caf501a;border-radius:8px}.error-message{color:#ff6b6b;font-size:.95rem;margin:15px 0;padding:10px;background:#ff6b6b1a;border-radius:8px}.game-footer{max-width:800px;text-align:center;padding:20px;background:#ffffff0d;border-radius:12px;margin-top:20px}.game-footer p{margin:10px 0;color:#999;line-height:1.6}.game-footer strong{color:#fff}@media (max-width: 768px){.game-header h1{font-size:2rem}.game-logo{display:none}.game-info{gap:8px;padding:10px 15px}.info-row{gap:15px}.canvas-container{padding:10px}.game-controls{flex-direction:column;width:100%;max-width:300px}.btn{width:100%}}*{box-sizing:border-box;margin:0;padding:0}body{margin:0;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}.App{min-height:100vh;background:#1a1a1a}