*{margin:0;padding:0;box-sizing:border-box}:root{--color-bg-primary: #1a1a1a;--color-bg-secondary: #2d2d2d;--color-bg-tertiary: #3a3a3a;--color-text-primary: #e0e0e0;--color-text-secondary: #a0a0a0;--color-border: #3a3a3a;--color-focus: #4a9eff;--color-break: #4ecdc4;--color-active: #6bcf7f;--color-warning: #ffd93d;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;--font-family-mono: "SF Mono", "Monaco", "Inconsolata", "Fira Mono", "Droid Sans Mono", "Source Code Pro", monospace;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-2xl: 48px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .35s ease;--touch-target-min: 44px}html,body{width:100%;height:100%;overflow:hidden}body{font-family:var(--font-family);background-color:var(--color-bg-primary);color:var(--color-text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6}#root{width:100%;height:100%}h1,h2,h3,h4,h5,h6{margin:0;font-weight:500;line-height:1.2}h1{font-size:32px}h2{font-size:24px}h3{font-size:20px}p{margin:0}button{font-family:inherit;font-size:16px;border:none;background:none;cursor:pointer;padding:0;color:inherit;transition:all var(--transition-fast)}button:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}button:disabled{opacity:.5;cursor:not-allowed}a{color:var(--color-focus);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-break)}input,select,textarea{font-family:inherit;font-size:16px;color:var(--color-text-primary);background-color:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-sm) var(--spacing-md);transition:border-color var(--transition-fast)}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--color-focus)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-bg-secondary)}::-webkit-scrollbar-thumb{background:var(--color-bg-tertiary);border-radius:var(--radius-sm)}::-webkit-scrollbar-thumb:hover{background:var(--color-border)}.container{width:100%;height:100%;padding:var(--spacing-lg)}.card{background-color:var(--color-bg-secondary);border-radius:var(--radius-lg);padding:var(--spacing-lg)}.divider{width:100%;height:1px;background-color:var(--color-border);margin:var(--spacing-md) 0}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.no-select{-webkit-user-select:none;user-select:none}@media screen and (min-width:1024px)and (orientation:landscape){body,button{font-size:18px}}#root{display:flex;align-items:center;justify-content:center}.pomodoro-timer{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:var(--spacing-lg);gap:var(--spacing-xl)}.timer-title{font-size:1.75rem;font-weight:500;color:var(--text-primary);margin:0}.session-indicator{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-sm);width:100%}.mode-label{font-size:1.5rem;font-weight:600;padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--radius-md);text-transform:uppercase;letter-spacing:.5px;transition:all var(--transition-normal)}.mode-label.focus{background-color:#4a9eff26;color:var(--accent-focus);border:2px solid var(--accent-focus)}.mode-label.shortBreak,.mode-label.longBreak{background-color:#4ecdc426;color:var(--accent-break);border:2px solid var(--accent-break)}.session-info{font-size:1rem;color:var(--text-secondary)}.pomodoro-count{display:flex;align-items:center;gap:var(--spacing-sm);font-size:.95rem;color:var(--text-secondary);margin-top:var(--spacing-xs)}.count-value{font-weight:600;color:var(--accent-active);font-size:1.1rem}.timer-display{display:flex;align-items:center;justify-content:center;margin:var(--spacing-lg) 0}.timer-time{font-size:6rem;font-weight:300;font-family:var(--font-mono);color:var(--text-primary);letter-spacing:.05em;transition:transform var(--transition-normal);-webkit-user-select:none;user-select:none;line-height:1}.timer-time.running{animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.85}}.timer-controls{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-md);width:100%;max-width:400px}.timer-controls-main{display:flex;gap:var(--spacing-md);width:100%}.control-btn{flex:1;min-height:var(--touch-target);padding:var(--spacing-md) var(--spacing-lg);font-size:1rem;font-weight:500;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-normal);text-transform:uppercase;letter-spacing:.5px;background:var(--bg-secondary);color:var(--text-primary)}.control-btn:disabled{opacity:.4;cursor:not-allowed}.control-btn:not(:disabled):hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000004d}.control-btn:not(:disabled):active{transform:translateY(0)}.control-btn.primary{flex:2;font-size:1.125rem}.control-btn.primary.start{background:linear-gradient(135deg,var(--accent-focus) 0%,#3a7fd5 100%);color:#fff}.control-btn.primary.pause{background:linear-gradient(135deg,var(--accent-break) 0%,#38a89d 100%);color:#fff}.control-btn.secondary{background:var(--bg-secondary);color:var(--text-secondary);border:1px solid var(--border-color)}.control-btn.secondary:not(:disabled):hover{background:var(--bg-primary);color:var(--text-primary);border-color:var(--text-secondary)}@media(max-width:768px){.timer-time{font-size:4rem}.timer-title{font-size:1.5rem}.mode-label{font-size:1.25rem}.timer-controls-main{flex-direction:column}.control-btn.primary{flex:1}}@media(prefers-reduced-motion:reduce){.timer-time.running{animation:none}.control-btn:not(:disabled):hover{transform:none}.control-btn:not(:disabled):active{transform:none}}.sound-settings{position:fixed;top:0;left:0;right:0;bottom:0;background:var(--bg-primary);z-index:1000;display:flex;flex-direction:column;overflow:hidden}.sound-settings-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-lg);border-bottom:1px solid var(--border-color)}.sound-settings-header h2{margin:0;font-size:1.75rem;color:var(--text-primary)}.close-btn{background:transparent;border:none;color:var(--text-secondary);font-size:1.5rem;cursor:pointer;padding:var(--spacing-sm);min-width:var(--touch-target);min-height:var(--touch-target);display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);transition:all var(--transition-normal)}.close-btn:hover{background:var(--bg-secondary);color:var(--text-primary)}.sound-settings-content{flex:1;overflow-y:auto;padding:var(--spacing-lg);display:flex;flex-direction:column;gap:var(--spacing-xl)}.sound-settings-footer{padding:var(--spacing-md) var(--spacing-lg);border-top:1px solid var(--border-color);background:var(--bg-secondary)}.sound-info{margin:0;font-size:.875rem;color:var(--text-secondary);text-align:center}.master-controls{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:var(--spacing-lg)}.master-controls-title{margin:0 0 var(--spacing-md) 0;font-size:1.25rem;color:var(--text-primary)}.master-volume-control{margin-bottom:var(--spacing-md)}.master-volume-label{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-sm);font-size:.95rem;color:var(--text-secondary)}.stop-all-btn{width:100%;min-height:var(--touch-target);padding:var(--spacing-md);background:linear-gradient(135deg,#e74c3c,#c0392b);color:#fff;border:none;border-radius:var(--radius-md);font-size:1rem;font-weight:500;cursor:pointer;transition:all var(--transition-normal);text-transform:uppercase;letter-spacing:.5px}.stop-all-btn:disabled{opacity:.4;cursor:not-allowed}.stop-all-btn:not(:disabled):hover{transform:translateY(-2px);box-shadow:0 4px 12px #e74c3c66}.stop-all-btn:not(:disabled):active{transform:translateY(0)}.sound-list{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:var(--spacing-lg)}.sound-list-title{margin:0 0 var(--spacing-md) 0;font-size:1.25rem;color:var(--text-primary)}.sound-items{display:flex;flex-direction:column;gap:var(--spacing-sm)}.sound-item{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-sm);transition:all var(--transition-normal)}.sound-item.playing{border-color:var(--accent-active);background:#6bcf7f0d}.sound-toggle{min-width:var(--touch-target);min-height:var(--touch-target);width:44px;height:44px;background:var(--bg-secondary);border:2px solid var(--border-color);border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-normal);flex-shrink:0}.sound-toggle:hover{border-color:var(--accent-active);background:#6bcf7f1a}.sound-toggle.active{background:var(--accent-active);border-color:var(--accent-active)}.sound-icon{font-size:1.25rem;color:var(--text-primary)}.sound-toggle.active .sound-icon{color:var(--bg-primary)}.sound-info{flex:1;min-width:100px}.sound-name{font-size:1rem;color:var(--text-primary);font-weight:500}.sound-volume{display:flex;align-items:center;gap:var(--spacing-sm);flex:1;max-width:250px}.volume-slider{flex:1;-webkit-appearance:none;-moz-appearance:none;appearance:none;height:6px;background:var(--bg-secondary);border-radius:3px;outline:none;transition:opacity var(--transition-normal)}.volume-slider:disabled{opacity:.3}.volume-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;background:var(--accent-active);border-radius:50%;cursor:pointer;transition:all var(--transition-normal)}.volume-slider::-moz-range-thumb{width:18px;height:18px;background:var(--accent-active);border-radius:50%;cursor:pointer;border:none;transition:all var(--transition-normal)}.volume-slider:not(:disabled):hover::-webkit-slider-thumb{background:#5fd682;transform:scale(1.2)}.volume-slider:not(:disabled):hover::-moz-range-thumb{background:#5fd682;transform:scale(1.2)}.volume-slider.master{height:8px}.volume-slider.master::-webkit-slider-thumb{width:20px;height:20px}.volume-slider.master::-moz-range-thumb{width:20px;height:20px}.volume-label{min-width:45px;text-align:right;font-size:.875rem;color:var(--text-secondary);font-weight:500}.sound-button{background:var(--bg-secondary);border:2px solid var(--border-color);border-radius:var(--radius-md);padding:var(--spacing-md) var(--spacing-lg);display:flex;align-items:center;gap:var(--spacing-sm);cursor:pointer;transition:all var(--transition-normal);font-size:1rem;color:var(--text-primary);min-height:var(--touch-target)}.sound-button:hover{border-color:var(--accent-active);background:#6bcf7f1a;transform:translateY(-2px);box-shadow:0 4px 12px #0003}.sound-button:active{transform:translateY(0)}.sound-button.active{border-color:var(--accent-active);background:#6bcf7f26}.sound-button-icon{font-size:1.5rem}.sound-button-text{font-weight:500}.sound-button-count{background:var(--accent-active);color:var(--bg-primary);padding:2px 8px;border-radius:10px;font-size:.75rem;font-weight:600;margin-left:auto}.settings-button{background:var(--bg-secondary);border:2px solid var(--border-color);border-radius:var(--radius-md);padding:var(--spacing-sm);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-normal);min-width:var(--touch-target);min-height:var(--touch-target);width:44px;height:44px}.settings-button:hover{border-color:var(--text-secondary);background:var(--bg-primary);transform:translateY(-2px);box-shadow:0 4px 12px #0003}.settings-button:active{transform:translateY(0)}.settings-icon{font-size:1.25rem}.sound-controls{display:flex;gap:var(--spacing-sm);align-items:center}.sound-controls .sound-button{flex:1}@media(max-width:768px){.sound-settings-content{padding:var(--spacing-md)}.sound-volume{max-width:150px}.sound-name{font-size:.875rem}}@media(prefers-reduced-motion:reduce){.sound-item,.sound-toggle,.sound-button,.stop-all-btn{transition:none}.sound-button:hover,.stop-all-btn:not(:disabled):hover{transform:none}}.dashboard{width:100%;height:100vh;display:flex;flex-direction:column;background-color:var(--color-bg-primary)}.dashboard-header{padding:var(--spacing-lg) var(--spacing-xl);border-bottom:1px solid var(--color-border)}.dashboard-header h1{font-size:28px;font-weight:500;color:var(--color-text-primary)}.dashboard-content{flex:1;display:grid;grid-template-columns:40% 60%;gap:var(--spacing-lg);padding:var(--spacing-xl);overflow:hidden}.pomodoro-section{display:flex;flex-direction:column}.pomodoro-section .card{flex:1;display:flex;flex-direction:column}.features-section{display:flex;flex-direction:column;overflow-y:auto}.features-section .card{flex-shrink:0}.card{background-color:var(--color-bg-secondary);border-radius:var(--radius-lg);padding:var(--spacing-xl);border:1px solid var(--color-border)}.card h2{margin-bottom:var(--spacing-lg);color:var(--color-text-primary);font-size:24px}.placeholder-content{display:flex;align-items:center;justify-content:center;min-height:200px;color:var(--color-text-secondary);font-size:18px;text-align:center;border:2px dashed var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-xl)}@media screen and (max-width:1024px){.dashboard-content{grid-template-columns:1fr;grid-template-rows:auto 1fr}.features-section{overflow-y:auto}}@media screen and (min-width:1024px)and (orientation:landscape){.dashboard-header h1{font-size:32px}.card h2{font-size:28px}.placeholder-content{font-size:20px}}