:root{--primary-color: #2c3e50;--secondary-color: #3498db;--accent-color: #1abc9c;--background-color: #f5f7fa;--card-color: #ffffff;--text-color: #333;--border-color: #e0e0e0;--break-color: #e74c3c}*{margin:0;padding:0;box-sizing:border-box;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}body{background-color:var(--background-color);color:var(--text-color);min-height:100vh;display:flex;flex-direction:column}.app-container{display:flex;flex-direction:column;height:100vh}.header{background-color:var(--primary-color);color:#fff;padding:15px 20px;display:flex;justify-content:space-between;align-items:center;box-shadow:0 2px 5px #0000001a}.logo{display:flex;align-items:center;font-weight:700;font-size:1.2rem}.logo i{margin-right:10px;font-size:1.4rem}.mode-toggle{display:flex;gap:10px}.mode-toggle button{background:none;border:none;color:#ffffffb3;padding:8px 15px;border-radius:20px;cursor:pointer;display:flex;align-items:center;transition:all .3s}.mode-toggle button i{margin-right:5px}.mode-toggle button.active{background-color:#fff3;color:#fff}.user-profile{display:flex;align-items:center;gap:15px}.user-profile i{font-size:1.5rem}.content{flex:1;padding:20px;overflow-y:auto}.panel{display:none}.panel.active{display:block}.dashboard{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:auto 1fr;gap:20px;height:calc(100vh - 140px)}.stat-card{background:var(--card-color);border-radius:8px;padding:20px;box-shadow:0 2px 10px #0000000d;grid-column:1 / 3}.stat-card h3{margin-bottom:15px;color:var(--primary-color);font-size:1.2rem}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.stat-item{display:flex;flex-direction:column;align-items:center;padding:15px;background-color:#f9f9f9;border-radius:8px}.stat-value{font-size:1.8rem;font-weight:700;color:var(--secondary-color);margin-bottom:5px}.stat-label{font-size:.9rem;color:#777}.timer-card{background:var(--card-color);border-radius:8px;padding:20px;box-shadow:0 2px 10px #0000000d;display:flex;flex-direction:column;align-items:center;justify-content:space-between}.timer-display{display:flex;justify-content:center;margin-bottom:20px}.timer-circle{width:200px;height:200px;border-radius:50%;background-color:#f5f5f5;display:flex;align-items:center;justify-content:center;position:relative}.timer-progress{position:absolute;top:0;left:0;width:100%;height:100%;border-radius:50%;background:conic-gradient(var(--secondary-color) 0%,transparent 0%);transition:background .3s}.timer-text{position:relative;z-index:1;font-size:2.5rem;font-weight:700;color:var(--primary-color)}.timer-controls{display:flex;gap:15px;margin-bottom:20px}.timer-controls button{background-color:var(--secondary-color);color:#fff;border:none;padding:10px 20px;border-radius:25px;cursor:pointer;display:flex;align-items:center;transition:background-color .3s}.timer-controls button i{margin-right:8px}.timer-controls button:disabled{background-color:#ccc;cursor:not-allowed}.timer-controls button:not(:disabled):hover{background-color:#2980b9}.next-break{display:flex;align-items:center;gap:10px;color:#666;font-size:.9rem}.next-break i{color:var(--break-color)}.task-card{background:var(--card-color);border-radius:8px;padding:20px;box-shadow:0 2px 10px #0000000d;display:flex;flex-direction:column}.task-card h3{margin-bottom:15px;color:var(--primary-color);font-size:1.2rem}.task-list{list-style-type:none;margin-bottom:20px;flex:1;overflow-y:auto}.task-list li{padding:12px 10px;border-bottom:1px solid var(--border-color);display:flex;align-items:center}.task-list li input[type=checkbox]{margin-right:10px}.add-task{display:flex;gap:10px}.add-task input{flex:1;padding:10px;border:1px solid var(--border-color);border-radius:4px}.add-task button{background-color:var(--secondary-color);color:#fff;border:none;border-radius:4px;width:40px;cursor:pointer}.break-container{display:flex;height:calc(100vh - 140px);gap:20px}.break-timer{flex:0 0 250px;background:var(--card-color);border-radius:8px;padding:20px;box-shadow:0 2px 10px #0000000d;display:flex;flex-direction:column;align-items:center;justify-content:space-between}.break-timer h3{color:var(--break-color);margin-bottom:20px;font-size:1.4rem}.break-circle .timer-progress{background:conic-gradient(var(--break-color) 0%,transparent 0%)}.break-timer p{margin-top:20px;text-align:center;color:#666}.break-content{flex:1;background:var(--card-color);border-radius:8px;box-shadow:0 2px 10px #0000000d;display:flex;flex-direction:column}.content-tabs{display:flex;border-bottom:1px solid var(--border-color)}.tab-btn{padding:15px 25px;border:none;background:none;font-size:1rem;cursor:pointer;transition:all .3s}.tab-btn.active{background-color:#f5f5f5;border-bottom:2px solid var(--secondary-color);font-weight:700}.tab-content{flex:1;overflow:hidden}.tab-panel{height:100%;padding:20px;overflow-y:auto}.tab-panel.active{display:block}.game-options{display:flex;gap:15px;margin-bottom:20px}.game-card{flex:1;height:80px;background-color:#f5f5f5;border-radius:8px;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;transition:all .3s}.game-card:hover{background-color:#e0e0e0;transform:translateY(-3px)}.game-card i{font-size:1.5rem;margin-bottom:5px;color:var(--secondary-color)}.game-container{height:400px;background-color:#f9f9f9;border-radius:8px;display:flex;align-items:center;justify-content:center}.article{background-color:#f9f9f9;border-radius:8px;padding:15px;margin-bottom:15px}.article h4{margin-bottom:10px;color:var(--primary-color)}#more-facts{background-color:var(--secondary-color);color:#fff;border:none;padding:10px 15px;border-radius:4px;cursor:pointer;margin-top:10px}.relax-option{background-color:#f9f9f9;border-radius:8px;padding:15px;margin-bottom:15px}.relax-option h4{margin-bottom:10px;color:var(--primary-color)}.relax-option button{background-color:var(--secondary-color);color:#fff;border:none;padding:8px 15px;border-radius:4px;cursor:pointer;margin-top:10px;display:flex;align-items:center;gap:5px}.footer{background-color:#f5f5f5;border-top:1px solid var(--border-color);padding:10px 20px;display:flex;justify-content:space-between;align-items:center}.achievements{display:flex;align-items:center;gap:8px}.achievements i{color:gold}.status-indicator{display:flex;align-items:center;gap:5px}.status-indicator.working:before{content:"";display:inline-block;width:8px;height:8px;background-color:#2ecc71;border-radius:50%}.switch-button{background-color:#e74c3c;color:#fff;border:none;padding:5px 10px;border-radius:4px;display:flex;align-items:center;gap:5px;cursor:pointer}.achievement-popup{position:fixed;bottom:30px;right:-300px;background:white;border-radius:8px;box-shadow:0 5px 15px #0003;width:250px;transition:right .5s}.achievement-popup.show{right:30px}.achievement-content{padding:20px;display:flex;flex-direction:column;align-items:center;text-align:center}.achievement-content i{font-size:2rem;color:gold;margin-bottom:10px}.achievement-content button{background-color:var(--secondary-color);color:#fff;border:none;padding:8px 20px;border-radius:20px;margin-top:10px;cursor:pointer}.emergency-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#f8f9fa;z-index:1000;overflow:hidden}.excel-container{width:100%;height:100%;display:flex;flex-direction:column;background-color:#f8f9fa;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}.excel-header{background-color:#217346;color:#fff}.excel-title-bar{display:flex;justify-content:space-between;align-items:center;background-color:#185a32;padding:0 0 0 10px;height:32px}.excel-icon{display:flex;align-items:center;font-size:14px;margin-right:10px}.excel-icon i{margin-right:5px}.excel-tabs{display:flex;flex-grow:1;height:100%}.excel-tab{padding:0 15px;margin-right:2px;background-color:#217346;border-top-left-radius:4px;border-top-right-radius:4px;font-size:13px;display:flex;align-items:center;height:100%}.excel-tab.active{background-color:#f8f9fa;color:#333}.excel-controls{display:flex;align-items:center}.excel-controls button{background:none;border:none;color:#fff;margin-left:5px;cursor:pointer;width:30px;height:30px;display:flex;align-items:center;justify-content:center}.excel-controls button:hover{background-color:#ffffff1a}.excel-controls button:last-child:hover{background-color:#e81123}.window-control{background:none;border:none;color:#fff;width:46px;height:32px;display:flex;align-items:center;justify-content:center;cursor:pointer;margin:0;padding:0}.window-control:hover{background-color:#ffffff1a}.window-control.minimize-btn:hover,.window-control.maximize-btn:hover{background-color:#fff3}.window-control.close-btn:hover{background-color:#e81123}.excel-menu-bar{display:flex;padding:5px 10px;font-size:13px}.excel-menu-bar div{padding:5px 10px;cursor:pointer}.excel-menu-bar div:hover{background-color:#ffffff1a}.excel-toolbar{display:flex;background-color:#f8f9fa;color:#333;padding:5px 10px;border-bottom:1px solid #ddd}.tool-group{display:flex;margin-right:10px;padding-right:10px;border-right:1px solid #ddd}.tool-group:last-child{border-right:none}.tool-group button{background:none;border:none;padding:5px;margin:0 2px;cursor:pointer;color:#333}.tool-group button:hover{background-color:#e6e6e6}.tool-group select{margin:0 2px;height:25px;border:1px solid #ddd}.excel-formula-bar{display:flex;align-items:center;background-color:#f8f9fa;color:#333;padding:5px 10px;border-bottom:1px solid #ddd}.formula-label{width:25px;text-align:center;font-weight:700;color:#217346;margin-right:5px}.cell-address{width:50px;text-align:center;border:1px solid #ddd;margin-right:5px;padding:2px 5px}.excel-formula-bar input{flex-grow:1;padding:2px 5px;border:1px solid #ddd}.excel-body{flex-grow:1;overflow:auto;position:relative}.excel-column-headers{display:flex;position:sticky;top:0;z-index:1;background-color:#f8f9fa}.excel-column-headers div{width:100px;height:24px;display:flex;align-items:center;justify-content:center;border-right:1px solid #ddd;border-bottom:1px solid #ddd;background-color:#f0f0f0;font-weight:700;color:#333}.row-header{width:40px!important;min-width:40px!important;background-color:#f0f0f0;font-weight:700;color:#333}.excel-row{display:flex;height:25px}.excel-cell{width:100px;height:100%;border-right:1px solid #ddd;border-bottom:1px solid #ddd;display:flex;align-items:center;padding:0 5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.excel-cell.selected{background-color:#e8f1ff;border:2px solid #217346}.excel-cell.formula{color:#217346;font-weight:700}.excel-cell.long-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.excel-footer{display:flex;justify-content:space-between;background-color:#f8f9fa;border-top:1px solid #ddd;padding:5px 10px}.sheet-tabs{display:flex;align-items:center}.sheet-tab{padding:5px 15px;margin-right:2px;background-color:#f0f0f0;border:1px solid #ddd;border-radius:4px;font-size:13px;cursor:pointer}.sheet-tab.active{background-color:#fff;border-bottom-color:#fff}.zoom-controls{display:flex;align-items:center}.zoom-controls span{margin-right:10px}.zoom-controls button{background:none;border:none;color:#217346;font-size:16px;cursor:pointer;margin-left:5px}.achievements-panel{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);width:600px;max-width:90%;max-height:80vh;background-color:#fff;border-radius:8px;box-shadow:0 5px 25px #0003;z-index:900;display:none;overflow:hidden}.achievements-panel.show{display:block}.achievements-header{display:flex;justify-content:space-between;align-items:center;padding:15px 20px;background-color:var(--secondary-color);color:#fff}.achievements-header h3{margin:0}.close-achievements{background:none;border:none;color:#fff;font-size:18px;cursor:pointer}.achievements-body{padding:20px;overflow-y:auto;max-height:calc(80vh - 60px)}.achievements-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:15px}.achievement-item{display:flex;padding:15px;background-color:#f5f5f5;border-radius:8px;opacity:.7;transition:all .3s ease}.achievement-item.unlocked{background-color:#f0f8ff;opacity:1;box-shadow:0 3px 10px #0000001a}.achievement-icon{background-color:#ddd;width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-right:15px;color:#888;font-size:20px}.achievement-item.unlocked .achievement-icon{background-color:var(--secondary-color);color:#fff}.achievement-info{flex-grow:1}.achievement-info h4{margin:0 0 5px;color:#444}.achievement-info p{margin:0;font-size:14px;color:#666}.achievement-status{display:flex;align-items:center;color:#888;font-size:18px}.achievement-item.unlocked .achievement-status{color:#27ae60}.settings-panel{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);width:400px;max-width:90%;background-color:#fff;border-radius:8px;box-shadow:0 5px 25px #0003;z-index:900;display:none;overflow:hidden}.settings-panel.show{display:block}.settings-header{display:flex;justify-content:space-between;align-items:center;padding:15px 20px;background-color:var(--secondary-color);color:#fff}.settings-header h3{margin:0}.close-settings{background:none;border:none;color:#fff;font-size:18px;cursor:pointer}.settings-body{padding:20px}.setting-item{margin-bottom:15px}.setting-item label{display:block;margin-bottom:5px;font-weight:700;color:#555}.setting-item input{width:100%;padding:8px;border:1px solid #ddd;border-radius:4px}.save-settings{width:100%;padding:10px;background-color:var(--secondary-color);color:#fff;border:none;border-radius:4px;cursor:pointer;font-weight:700;margin-top:10px}.save-settings:hover{background-color:var(--primary-color)}#task-list li{display:flex;align-items:center;margin-bottom:10px;background-color:#f9f9f9;padding:8px 10px;border-radius:4px;transition:all .3s ease}#task-list li:hover{background-color:#f0f0f0}#task-list li label{flex-grow:1;margin-left:10px;cursor:pointer}.delete-task{background:none;border:none;color:#e74c3c;cursor:pointer;opacity:.6;transition:all .2s ease}.delete-task:hover{opacity:1}.settings-btn,.view-achievements-btn{background:none;border:none;color:var(--secondary-color);cursor:pointer;font-size:18px;margin-left:10px;transition:all .2s ease}.settings-btn:hover,.view-achievements-btn:hover{color:var(--primary-color);transform:scale(1.1)}.status-indicator{display:flex;align-items:center;padding:0 10px}.status-indicator span{margin-left:5px}.status-indicator.working{--status-color: #2ecc71}.status-indicator.breaking{--status-color: var(--break-color)}.status-indicator:before{content:"";display:inline-block;width:10px;height:10px;border-radius:50%;background-color:var(--status-color);animation:pulse 2s infinite}@media (max-width: 1024px){.dashboard{grid-template-columns:1fr}.stat-card{grid-column:1}.stat-grid{grid-template-columns:repeat(2,1fr)}.break-container{flex-direction:column}.break-timer{flex:0 0 auto}}@media (max-width: 768px){.stat-grid{grid-template-columns:1fr}.mode-toggle button span{display:none}.mode-toggle button i{margin-right:0}.timer-circle{width:150px;height:150px}.timer-text{font-size:2rem}.game-options{flex-direction:column}.header{padding:10px}.logo span{display:none}}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.05)}to{transform:scale(1)}}.pulse{animation:pulse 1s infinite}.minesweeper-game{display:flex;flex-direction:column;align-items:center}.minesweeper-controls{display:flex;justify-content:space-between;align-items:center;width:100%;max-width:260px;margin-bottom:15px;padding:10px;background-color:#f5f5f5;border-radius:8px}.reset-btn{padding:8px 16px;background-color:var(--break-color);color:#fff;border:none;border-radius:5px;cursor:pointer;font-size:14px;transition:all .3s}.reset-btn:hover{background-color:#ff7b00;transform:translateY(-2px)}.mines-count{font-size:16px;font-weight:700;color:#333}.minesweeper-grid{display:grid;grid-template-columns:repeat(8,30px);grid-template-rows:repeat(8,30px);gap:2px}.minesweeper-cell{width:30px;height:30px;background-color:#ddd;display:flex;align-items:center;justify-content:center;font-weight:700;cursor:pointer;-webkit-user-select:none;user-select:none}.minesweeper-cell.revealed{background-color:#f0f0f0}.pixel-art-grid{display:grid;grid-template-columns:repeat(16,20px);grid-template-rows:repeat(16,20px);gap:1px}.pixel{width:20px;height:20px;background-color:#fff;border:1px solid #ddd;cursor:pointer}.color-palette{display:flex;gap:5px;margin-bottom:10px}.color-option{width:25px;height:25px;border-radius:50%;cursor:pointer;border:2px solid transparent}.color-option.selected{border-color:#000}.snake-game{position:relative;width:300px;height:300px;background-color:#f0f0f0;display:flex;flex-direction:column;align-items:center}.snake-board{width:300px;height:300px;display:grid;grid-template-columns:repeat(15,1fr);grid-template-rows:repeat(15,1fr);background-color:#f9f9f9;border:2px solid #333}.snake-cell{border:1px solid #bbb;background-color:#fff}.snake-cell.snake{background-color:#2ecc71;border-radius:4px}.snake-cell.food{background-color:#e74c3c;border-radius:50%}.snake-score{margin-top:10px;font-weight:700}.snake-controls{margin-top:10px;display:flex;gap:10px}