:root,[data-theme=light]{--color-primary: #1a1a1a;--color-primary-hover: #333;--color-success: #4CAF50;--color-success-dark: #388E3C;--color-success-light: #e8f5e9;--color-warning: #ffc107;--color-warning-dark: #FFA000;--color-danger: #f44336;--color-danger-dark: #d32f2f;--color-info: #2196f3;--color-text-primary: #1a1a1a;--color-text-secondary: #666;--color-text-muted: #999;--color-text-inverse: white;--color-bg-primary: #fafafa;--color-bg-secondary: white;--color-bg-tertiary: #f5f5f5;--color-border: #e5e5e5;--color-border-hover: #999;--color-border-focus: #1a1a1a;--chart-grid: #e0e0e0;--chart-axis: #666;--chart-line: #2196f3;--chart-sleep-area: #d1c4e9;--chart-tooltip-bg: white;--chart-tooltip-text: #333;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-2xl: 48px;--spacing-3xl: 64px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-pill: 24px;--radius-circle: 50%;--font-primary: -apple-system, BlinkMacSystemFont, "Inter", "SF Pro Text", "Segoe UI", sans-serif;--font-mono: "SF Mono", "Monaco", "Inconsolata", "Courier New", monospace;--font-size-xs: .75rem;--font-size-sm: .85rem;--font-size-md: 1rem;--font-size-lg: 1.25rem;--font-size-xl: 1.5rem;--font-size-2xl: 2rem;--font-size-3xl: 2.5rem;--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .07);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 25px rgba(0, 0, 0, .1);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}[data-theme=dark]{--color-primary: #e0e0e0;--color-primary-hover: #ccc;--color-success: #66bb6a;--color-success-dark: #4caf50;--color-success-light: #1b5e20;--color-warning: #ffca28;--color-warning-dark: #ffb300;--color-danger: #ef5350;--color-danger-dark: #f44336;--color-info: #42a5f5;--color-text-primary: #e0e0e0;--color-text-secondary: #aaa;--color-text-muted: #777;--color-text-inverse: #1a1a1a;--color-bg-primary: #1a1a1a;--color-bg-secondary: #242424;--color-bg-tertiary: #2a2a2a;--color-border: #3a3a3a;--color-border-hover: #666;--color-border-focus: #e0e0e0;--chart-grid: #3a3a3a;--chart-axis: #aaa;--chart-line: #42a5f5;--chart-sleep-area: #7e57c2;--chart-tooltip-bg: #2a2a2a;--chart-tooltip-text: #e0e0e0;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .2);--shadow-md: 0 4px 6px rgba(0, 0, 0, .3);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .4);--shadow-xl: 0 20px 25px rgba(0, 0, 0, .5)}body{margin:0;font-family:var(--font-primary);background:var(--color-bg-primary);color:var(--color-text-primary);line-height:1.6}.toast-container{position:fixed;top:var(--spacing-lg);left:50%;transform:translate(-50%);z-index:10000;pointer-events:none}.toast{background:var(--color-bg-secondary);color:var(--color-text-primary);padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);margin-bottom:var(--spacing-sm);display:flex;align-items:center;gap:var(--spacing-md);animation:slideDown var(--transition-slow) ease;pointer-events:auto;min-width:300px;max-width:500px}.toast.success{background:var(--color-success);color:var(--color-text-inverse)}.toast.error{background:var(--color-danger);color:var(--color-text-inverse)}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}footer{margin-top:80px;padding:20px;text-align:center;opacity:.3;font-size:11px;color:var(--color-text-muted);transition:opacity var(--transition-base)}footer:hover{opacity:.5}footer a{color:var(--color-text-muted);text-decoration:none}footer a:hover{text-decoration:underline}*{margin:0;padding:0;box-sizing:border-box}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes slideIn{0%{opacity:0;transform:translate(-10px)}to{opacity:1;transform:translate(0)}}@keyframes slideUp{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-10px)}}body{font-family:var(--font-primary);background:var(--color-bg-primary);min-height:100vh;padding:0;color:var(--color-text-primary)}.app{max-width:1200px;margin:0 auto;padding:40px 20px;animation:fadeIn .8s ease-out;position:relative}header{text-align:left;margin-bottom:60px;border-bottom:1px solid var(--color-border);padding-bottom:30px}header h1{font-size:2.8rem;font-weight:300;letter-spacing:-.03em;margin-bottom:var(--spacing-sm);color:var(--color-text-primary)}.theme-toggle{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-pill);padding:8px 12px;font-size:1.5rem;cursor:pointer;transition:all var(--transition-base);display:flex;align-items:center;justify-content:center;min-width:50px;min-height:50px}.theme-toggle:hover{background:var(--color-bg-tertiary);border-color:var(--color-border-hover);transform:scale(1.05)}.sleep-warning{position:fixed;top:20px;left:50%;transform:translate(-50%);z-index:1000;animation:slideIn .3s ease-out;max-width:90%;width:600px}.warning-content{background:var(--color-primary);color:var(--color-text-inverse);padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-sm);display:flex;align-items:center;gap:var(--spacing-md);font-weight:400;border:1px solid var(--color-primary);font-size:var(--font-size-sm);letter-spacing:.01em}.warning-icon{font-size:1.5rem;flex-shrink:0;animation:pulse 2s infinite}.warning-text{flex:1;line-height:1.4}.warning-close{background:#fff3;border:none;color:#fff;font-size:1.5rem;width:30px;height:30px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0}.warning-close:hover{background:#ffffff4d}.mode-toggle{display:flex;flex-direction:column;align-items:flex-start;gap:20px;margin-bottom:40px}.toggle-buttons{display:flex;gap:0;background:transparent;padding:0;border-radius:0}.mode-btn{padding:var(--spacing-md) var(--spacing-lg);background:transparent;color:var(--color-text-secondary);border:1px solid var(--color-border);border-radius:0;cursor:pointer;font-size:var(--font-size-sm);font-weight:400;transition:all var(--transition-base);letter-spacing:.02em;text-transform:uppercase}.mode-btn:first-child{border-radius:3px 0 0 3px}.mode-btn:last-child{border-radius:0 3px 3px 0;border-left:none}.mode-btn:hover{background:var(--color-bg-tertiary)}.mode-btn.active{background:var(--color-primary);color:var(--color-text-inverse);border-color:var(--color-primary);font-weight:500}.current-status{display:flex;justify-content:flex-start;gap:60px;font-size:1rem;margin-top:20px}.status-item{display:flex;flex-direction:column;align-items:flex-start;gap:4px}.status-item span{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--color-text-muted);font-weight:500}.status-item strong{font-size:1.8rem;font-weight:300;color:var(--color-text-primary)}.status-item strong.high{color:#d4a574}.evaluating-drink{margin-bottom:24px;padding:20px;background:var(--color-bg-tertiary);border-radius:8px;border:1px solid var(--color-border)}.evaluating-drink span{display:block;font-size:.9rem;color:var(--color-text-secondary);margin-bottom:8px;text-transform:uppercase;letter-spacing:.05em}.evaluating-drink strong{display:block;color:var(--color-text-primary);font-size:1.3rem;margin:8px 0;font-weight:600}.answer{font-size:var(--font-size-3xl);font-weight:700;margin:var(--spacing-lg) 0 var(--spacing-md);letter-spacing:-.02em;animation:fadeIn var(--transition-slow) ease;transition:color var(--transition-base)}.answer.yes{color:var(--color-success-dark)}.answer.no{color:var(--color-text-muted)}.answer.maybe{color:var(--color-warning-dark)}.recommendation-card p{font-size:1rem;color:var(--color-text-secondary);line-height:1.6;letter-spacing:.01em}.full-width-flow{display:flex;flex-direction:column;gap:30px;margin-bottom:20px}.flow-section{width:100%;background:var(--color-bg-secondary);border-radius:var(--radius-sm);padding:var(--spacing-2xl);border:1px solid var(--color-border);animation:fadeIn .6s ease-out;margin-bottom:2px}.flow-section.chart-flow{max-width:1200px;width:100%;padding:40px;background:var(--color-bg-secondary);margin-left:auto;margin-right:auto}.baseline-selector{display:flex;align-items:center;gap:8px}.baseline-selector label{font-weight:400;color:var(--color-text-muted);text-transform:uppercase;font-size:.75rem;letter-spacing:.08em}.baseline-selector select{padding:8px 12px;border-radius:0;border:1px solid var(--color-border);background-color:var(--color-bg-secondary);color:var(--color-text-primary);font-size:13px;cursor:pointer;transition:all .2s ease;text-transform:uppercase;letter-spacing:.02em}.baseline-selector select:hover{border-color:var(--color-border-hover)}.baseline-selector select:focus{outline:none;border-color:var(--color-primary)}.flow-section.answer-flow{text-align:center;padding:60px 40px;background:var(--color-bg-secondary);border:1px solid var(--color-border)}.section-header{display:flex;align-items:center;gap:12px;margin-bottom:20px;position:relative}.clear-schedule-btn{margin-left:auto;padding:var(--spacing-sm) var(--spacing-md);background:transparent;color:var(--color-text-secondary);border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:var(--font-size-xs);cursor:pointer;transition:all var(--transition-base);display:flex;align-items:center;gap:var(--spacing-xs);text-transform:uppercase;letter-spacing:.05em}.clear-schedule-btn:hover{background:var(--color-danger);color:var(--color-text-inverse);border-color:var(--color-danger)}.step-number{display:flex;align-items:center;justify-content:center;width:28px;height:28px;background:transparent;color:var(--color-primary);border:2px solid var(--color-primary);border-radius:var(--radius-circle);font-size:var(--font-size-sm);font-weight:500;flex-shrink:0;transition:all var(--transition-base)}.section-header h2{color:var(--color-text-primary);font-size:1.1rem;margin:0;font-weight:500;letter-spacing:-.01em;text-transform:uppercase}.sleep-settings,.threshold-settings{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}.coffee-scheduler{background:transparent;padding:0;box-shadow:none}.schedule-list{margin-bottom:30px;background:transparent;border-radius:0;padding:0}.empty-state{color:var(--color-text-secondary);font-style:normal;padding:40px;text-align:center;font-size:1rem;line-height:1.6}.schedule-item{display:flex;align-items:center;padding:var(--spacing-md);background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-sm);margin-bottom:var(--spacing-xs);transition:all var(--transition-base);animation:fadeIn var(--transition-slow) ease}.schedule-item:hover{border-color:var(--color-border-hover);background:var(--color-bg-tertiary);transform:translate(4px);box-shadow:var(--shadow-sm)}.schedule-item .time{font-weight:400;margin-right:20px;color:var(--color-text-primary);min-width:70px;font-size:.95rem;font-family:SF Mono,Monaco,Inconsolata,monospace;letter-spacing:.02em}.schedule-item .time.clickable{cursor:pointer;transition:color .2s ease}.schedule-item .time.clickable:hover{color:var(--color-info)}.time-edit-input{font-weight:700;margin-right:15px;min-width:60px;border:2px solid var(--color-info);border-radius:4px;padding:2px 4px;font-size:inherit;background:var(--color-bg-secondary);color:var(--color-text-primary)}.drink-info{flex:1;display:flex;flex-direction:column;gap:2px}.drink-name{font-weight:400;color:var(--color-text-primary);font-size:.9rem;letter-spacing:.01em}.schedule-item .amount{color:var(--color-text-muted);font-size:.8rem;font-family:SF Mono,Monaco,Inconsolata,monospace}.remove-btn{background:transparent;color:var(--color-text-muted);border:1px solid var(--color-border);border-radius:var(--radius-sm);width:28px;height:28px;font-size:20px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.remove-btn:hover{background:var(--color-danger);color:var(--color-text-inverse);border-color:var(--color-danger);transform:scale(1.1)}.add-drink h4{margin-bottom:15px;color:var(--color-text-secondary);font-size:1rem}.time-section{margin-bottom:20px}.section-label{display:block;font-weight:500;color:var(--color-text-secondary);margin-bottom:12px;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em}.time-selector{display:flex;flex-direction:column;gap:12px}.time-selector .time-input{width:100%}.time-presets{display:flex;flex-wrap:wrap;gap:8px}.time-preset-btn{padding:var(--spacing-sm) var(--spacing-md);background:transparent;border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:var(--font-size-xs);color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast);font-family:var(--font-mono)}.time-preset-btn:hover{background:var(--color-primary);color:var(--color-text-inverse);border-color:var(--color-primary);transform:translateY(-1px)}.time-preset-btn:active{background:#333}.search-bar{margin-bottom:15px}.search-input{width:100%;padding:12px 16px;border:1px solid #e5e5e5;border-radius:0;font-size:14px;background:var(--color-bg-secondary);transition:border-color .2s}.search-input:focus{outline:none;border-color:var(--color-primary)}.category-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:15px}.category-tab{display:flex;align-items:center;gap:5px;padding:10px 16px;background:transparent;border:1px solid #e5e5e5;border-radius:0;cursor:pointer;transition:all .2s;font-size:.85rem;text-transform:uppercase;letter-spacing:.05em}.category-tab:hover{background:var(--color-bg-tertiary);border-color:var(--color-text-muted)}.category-tab.active{background:var(--color-primary);color:var(--color-text-inverse);border-color:var(--color-primary)}.category-icon{font-size:1.1rem}.category-name{font-weight:500}.drinks-list{max-height:200px;overflow-y:auto;margin-bottom:15px;border:1px solid #e0e0e0;border-radius:8px;padding:5px}.drink-option{display:flex;justify-content:space-between;align-items:center;width:100%;padding:var(--spacing-md);background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);margin-bottom:var(--spacing-xs);text-align:left}.drink-option:hover{background:var(--color-bg-tertiary);border-color:var(--color-border-hover);transform:translateY(-2px);box-shadow:var(--shadow-sm)}.drink-option.selected{background:var(--color-primary);color:var(--color-text-inverse);border-color:var(--color-primary);box-shadow:var(--shadow-md)}.caffeine-badge{background:transparent;padding:2px 8px;border:1px solid #e5e5e5;border-radius:2px;font-size:.75rem;color:var(--color-text-secondary);font-weight:500}.custom-btn{width:100%;padding:12px;background:transparent;border:1px dashed #999;border-radius:0;color:var(--color-text-secondary);cursor:pointer;transition:all .2s;font-weight:400;text-transform:uppercase;letter-spacing:.05em;font-size:.85rem}.custom-btn:hover{border-color:var(--color-primary);color:var(--color-primary);border-style:solid}.quick-presets{margin-bottom:30px;padding:20px;background:transparent;border:1px solid #e5e5e5;border-radius:0}.presets-label{font-size:.8rem;color:var(--color-text-muted);margin-bottom:16px;font-weight:400;text-transform:uppercase;letter-spacing:.08em}.preset-buttons{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:8px}.preset-btn{display:flex;flex-direction:column;align-items:center;padding:16px 8px;background:var(--color-bg-secondary);border:1px solid #e5e5e5;border-radius:0;cursor:pointer;transition:all .2s ease}.preset-btn:hover{border-color:var(--color-primary);background:var(--color-bg-tertiary)}.preset-icon{font-size:1.5rem;margin-bottom:4px}.preset-name{font-size:.85rem;font-weight:500;color:var(--color-text-primary);text-align:center}.preset-caffeine{font-size:.75rem;color:var(--color-text-muted);margin-top:2px}.divider{text-align:center;color:var(--color-text-muted);margin:30px 0;font-size:.8rem;position:relative;text-transform:uppercase;letter-spacing:.1em}.divider:before,.divider:after{content:"";position:absolute;top:50%;width:42%;height:1px;background:#e5e5e5}.divider:before{left:0}.divider:after{right:0}.custom-drink{padding:15px;background:#f9f9f9;border-radius:8px}.custom-drink h5{margin-bottom:20px;color:var(--color-text-primary);font-weight:500;text-transform:uppercase;font-size:.85rem;letter-spacing:.08em}.custom-name-input{width:100%;padding:8px 12px;border:1px solid #ddd;border-radius:6px;margin-bottom:10px}.caffeine-input-group{display:flex;align-items:center;gap:10px;margin-bottom:15px}.caffeine-input{width:100px;padding:8px 12px;border:1px solid #ddd;border-radius:6px}.cancel-btn{padding:var(--spacing-md) var(--spacing-lg);background:transparent;border:1px solid var(--color-border);border-radius:var(--radius-sm);cursor:pointer;margin-right:var(--spacing-sm);text-transform:uppercase;letter-spacing:.05em;font-size:var(--font-size-sm);color:var(--color-text-secondary);transition:all var(--transition-base)}.cancel-btn:hover{background:var(--color-bg-tertiary);border-color:var(--color-border-hover)}.time-input{padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:var(--font-size-sm);background:var(--color-bg-secondary);transition:border-color var(--transition-fast)}.time-input:focus{outline:none;border-color:var(--color-border-focus);box-shadow:0 0 0 3px #1a1a1a1a}.add-btn{padding:var(--spacing-md) var(--spacing-xl);background:var(--color-primary);color:var(--color-text-inverse);border:1px solid var(--color-primary);border-radius:var(--radius-sm);cursor:pointer;font-weight:400;transition:all var(--transition-base);text-transform:uppercase;letter-spacing:.05em;font-size:var(--font-size-sm)}.add-btn:hover:not(:disabled){background:var(--color-primary-hover);border-color:var(--color-primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.add-btn:disabled{background:var(--color-bg-tertiary);border-color:var(--color-border);color:var(--color-text-muted);cursor:not-allowed;opacity:.6}.settings-group{display:flex;flex-direction:column;gap:20px}.setting-item label{display:flex;flex-direction:column;gap:8px;color:var(--color-text-primary);font-weight:500}.setting-item input{padding:10px 12px;border:1px solid var(--color-border);border-radius:0;font-size:14px;background:var(--color-bg-secondary);color:var(--color-text-primary);transition:border-color .2s}.setting-item input:focus{outline:none;border-color:var(--color-border-focus)}.input-with-unit{display:flex;align-items:center;gap:8px}.input-with-unit input{flex:1}.unit{color:#999;font-size:13px;text-transform:uppercase;letter-spacing:.05em}.setting-item small{color:var(--color-text-muted);font-size:12px;font-weight:400}.circular-sleep-schedule{margin-bottom:30px;padding:30px;background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:0;display:flex;flex-direction:column;align-items:center;gap:30px}.clock-container{position:relative;display:flex;justify-content:center;align-items:center}.clock-svg{display:block}.sleep-arc{filter:drop-shadow(0 2px 4px rgba(0,0,0,.1));transition:opacity .2s ease,filter .2s ease}.sleep-arc:hover{opacity:.9!important;filter:drop-shadow(0 4px 8px rgba(0,0,0,.2))}.thumb{transition:r .2s ease;filter:drop-shadow(0 2px 4px rgba(0,0,0,.2))}.thumb:active{r:14}.schedule-controls{width:100%;max-width:300px}.time-value.clickable{cursor:pointer;transition:all .2s;padding:4px 8px;border-radius:var(--radius-sm);border:2px solid transparent}.time-value.clickable:hover{background:var(--color-bg-tertiary);border-color:var(--color-primary);color:var(--color-primary)}.time-input-inline{font-size:1rem;font-weight:500;color:var(--color-text-primary);min-width:100px;text-align:center;font-family:var(--font-mono);letter-spacing:.02em;padding:4px 8px;background:var(--color-bg-secondary);border:2px solid var(--color-primary);border-radius:var(--radius-sm);outline:none}.time-display{display:flex;flex-direction:column;gap:12px}.time-row{display:flex;align-items:center;justify-content:space-between;padding:12px;background:var(--color-bg-secondary);border-radius:0;border:1px solid var(--color-border);flex-wrap:wrap;gap:8px}.time-label{font-size:.9rem;font-weight:600;color:var(--color-text-secondary);display:flex;align-items:center;gap:6px;min-width:80px}.time-value{font-size:1rem;font-weight:500;color:var(--color-text-primary);min-width:110px;text-align:center;font-family:var(--font-mono);letter-spacing:.02em;display:inline-block;white-space:nowrap}.quick-adjust{display:flex;gap:4px;flex-shrink:0}.adjust-btn{padding:4px 8px;background:transparent;border:1px solid var(--color-border);border-radius:0;font-size:.75rem;color:var(--color-text-secondary);cursor:pointer;transition:all .2s;text-transform:uppercase;letter-spacing:.02em}.adjust-btn:hover{background:var(--color-primary);color:var(--color-text-inverse);border-color:var(--color-primary)}.adjust-btn:active{background:var(--color-primary-hover)}.fine-tune-indicator{padding:8px;background:#fff3cd;border:1px solid #ffc107;border-radius:6px;color:#856404;font-size:.85rem;text-align:center;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.keyboard-help{width:100%;max-width:300px;margin-top:10px}.keyboard-help details{padding:8px;background:var(--color-bg-secondary);border:1px solid #e0e0e0;border-radius:6px;font-size:.85rem}.keyboard-help summary{cursor:pointer;color:var(--color-text-secondary);font-weight:500;-webkit-user-select:none;user-select:none}.keyboard-help summary:hover{color:#333}.keyboard-help ul{margin:10px 0 0;padding-left:20px;color:var(--color-text-secondary)}.keyboard-help li{margin:4px 0}.keyboard-help kbd{display:inline-block;padding:2px 6px;margin:0 2px;background:#f0f0f0;border:1px solid #ccc;border-radius:3px;font-family:monospace;font-size:.8rem;box-shadow:0 1px #ccc}.sleep-schedule-slider{margin-bottom:25px;padding:20px;background:#f8f9fa;border-radius:12px}.schedule-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.schedule-header 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