:root{--ground: #000000;--surface: #1c1c1e;--raised: #2c2c2e;--active: #3a3a3c;--border: rgba(255, 255, 255, .12);--border-focus: #0a84ff;--rule: rgba(255, 255, 255, .08);--font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "SF Pro", "Helvetica Neue", Helvetica, Arial, sans-serif;--text: #f5f5f7;--muted: #86868b;--faint: #636366;--accent: #0a84ff;--accent-hover: #409cff;--primary: #0a84ff;--primary-ink: #ffffff;--primary-hover: #409cff;--positive: #30d158;--warning: #ffd60a;--danger: #ff453a;--danger-hover: #ff6961;--pill-danger-bg: rgba(255, 69, 58, .16);--pill-danger-ink: #ff6961;--pill-danger-border: rgba(255, 69, 58, .28);--pill-active-bg: rgba(10, 132, 255, .15);--pill-active-ink: #409cff;--radius-card: 18px;--radius-control: 10px;--radius-pill: 999px;--control-height: 40px}body.light-mode{--ground: #f5f5f7;--surface: #ffffff;--raised: #f2f2f7;--active: #e5e5ea;--border: rgba(0, 0, 0, .09);--border-focus: #0071e3;--rule: rgba(0, 0, 0, .06);--text: #1d1d1f;--muted: #6e6e73;--faint: #86868b;--accent: #0071e3;--accent-hover: #0077ed;--primary: #0071e3;--primary-ink: #ffffff;--primary-hover: #0077ed;--positive: #34c759;--warning: #ff9500;--danger: #ff3b30;--danger-hover: #d70015;--pill-danger-bg: rgba(255, 59, 48, .1);--pill-danger-ink: #d70015;--pill-danger-border: rgba(255, 59, 48, .2);--pill-active-bg: rgba(0, 113, 227, .1);--pill-active-ink: #0071e3}*,*:before,*:after{box-sizing:border-box}body{min-height:100svh;margin:0;padding:48px 20px 80px;background-color:var(--ground);color:var(--text);font-family:var(--font);font-size:13.5px;line-height:1.45;letter-spacing:-.012em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}button,input,select{font:inherit;color:inherit}button{-webkit-user-select:none;user-select:none;cursor:pointer;transition:transform .12s cubic-bezier(.22,1,.36,1),background-color .15s ease,border-color .15s ease,color .15s ease,opacity .15s ease}button:active,.btn-pressed{transform:scale(.96)!important}:focus-visible{outline:2px solid var(--border-focus);outline-offset:2px}#todo-form input:focus-visible,#todo-form select:focus-visible,#task-search:focus-visible,#task-sort:focus-visible,.edit-input:focus-visible{outline:2px solid var(--border-focus);outline-offset:2px}.form-error{min-height:16px;margin:6px 2px 0;color:var(--danger);font-size:12px;font-weight:500}.form-error:empty{margin:0}.num,.stat-value,.progress-percent{font-variant-numeric:tabular-nums}.app-shell,body>div{max-width:740px;margin:0 auto;padding:30px;background-color:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card)}.app-header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:12px}.brand-monogram{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:9px;background-color:var(--accent);color:#fff;font-size:15px;font-weight:700;-webkit-user-select:none;user-select:none}.brand-text h1,h1{margin:0;font-size:20px;font-weight:600;letter-spacing:-.024em;color:var(--text)}.app-subtitle{margin:2px 0 0;font-size:12.5px;color:var(--muted);font-weight:450;letter-spacing:-.008em}.theme-btn,#theme-toggle{display:inline-flex;align-items:center;justify-content:center;height:32px;padding:0 14px;border:1px solid var(--border);border-radius:var(--radius-pill);background-color:var(--raised);color:var(--muted);font-size:12px;font-weight:550;letter-spacing:-.008em}.theme-btn:hover,#theme-toggle:hover{background-color:var(--active);color:var(--text);border-color:var(--border-focus)}#todo-form{display:grid;grid-template-columns:minmax(160px,1fr) 140px 115px auto auto;gap:8px}#todo-form input,#todo-form select{height:var(--control-height);padding:0 12px;border:1px solid var(--border);border-radius:var(--radius-control);background-color:var(--raised);color:var(--text);font-size:13.5px;outline:none;transition:border-color .15s ease}#todo-input::placeholder{color:var(--faint)}#todo-form input:focus,#todo-form select:focus{border-color:var(--border-focus)}#todo-form button{display:inline-flex;align-items:center;justify-content:center;height:var(--control-height);padding:0 16px;border:1px solid transparent;border-radius:var(--radius-control);font-size:13px;font-weight:600;letter-spacing:-.01em;white-space:nowrap}#todo-form button[type=submit]{background-color:var(--primary);color:var(--primary-ink)}#todo-form button[type=submit]:hover{background-color:var(--primary-hover)}#todo-form .history-button{border:1px solid var(--border);background-color:var(--raised);color:var(--text)}#todo-form .history-button:hover{background-color:var(--active);border-color:var(--border-focus)}.stats-dashboard{margin-top:20px;border:1px solid var(--border);border-radius:var(--radius-card);background-color:var(--surface);overflow:hidden}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}.stat-card{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:14px 10px;border:0;border-radius:0;background-color:transparent;color:var(--text);position:relative}.stat-card+.stat-card{border-left:1px solid var(--border)}.stat-card:hover{background-color:var(--raised)}.stat-card.active-filter{background-color:var(--active)}.stat-card.active-filter:after{content:"";position:absolute;bottom:0;left:0;right:0;height:2px;background-color:var(--accent)}.stat-value{font-size:24px;font-weight:600;line-height:1.1;letter-spacing:-.02em}.stat-label{margin-top:4px;font-size:11px;font-weight:550;letter-spacing:.03em;text-transform:uppercase;color:var(--muted)}.stat-card[data-stat-filter=all] .stat-value{color:var(--text)}.stat-card[data-stat-filter=active] .stat-value{color:var(--warning)}.stat-card[data-stat-filter=done] .stat-value{color:var(--positive)}.stat-card[data-stat-filter=overdue-task] .stat-value{color:var(--danger)}.progress-container{padding:12px 16px 14px;border-top:1px solid var(--border);background-color:var(--raised)}.progress-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;font-size:12px;font-weight:500;color:var(--muted)}.progress-percent{color:var(--text);font-weight:600}.progress-bar-bg{height:4px;border-radius:var(--radius-pill);background-color:var(--border);overflow:hidden}.progress-bar-fill{height:100%;width:0%;border-radius:var(--radius-pill);background-color:var(--positive);transition:width .3s ease}.task-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius-control);background-color:var(--raised)}.search-box{position:relative;display:flex;align-items:center;flex:1;min-width:0}.search-icon{position:absolute;left:10px;font-size:12px;pointer-events:none;opacity:.55}#task-search{width:100%;height:34px;padding:0 28px 0 32px;border:1px solid var(--border);border-radius:7px;background-color:var(--surface);color:var(--text);font-size:13px;outline:none;transition:border-color .15s ease}#task-search::placeholder{color:var(--faint)}#task-search:focus{border-color:var(--border-focus)}#task-search::-webkit-search-decoration,#task-search::-webkit-search-cancel-button,#task-search::-webkit-search-results-button,#task-search::-webkit-search-results-decoration{-webkit-appearance:none}.search-clear{position:absolute;right:6px;display:flex;align-items:center;justify-content:center;width:20px;height:20px;padding:0;border:0;border-radius:50%;background-color:var(--border);color:var(--muted);font-size:13px;line-height:1;cursor:pointer;transition:color .15s ease,background-color .15s ease}.search-clear:hover{background-color:var(--active);color:var(--text)}.sort-box{display:flex;align-items:center;gap:8px;flex-shrink:0}.sort-label{font-size:12px;font-weight:500;color:var(--muted);white-space:nowrap}#task-sort{height:34px;padding:0 10px;border:1px solid var(--border);border-radius:7px;background-color:var(--surface);color:var(--text);font-size:12px;font-weight:500;outline:none;cursor:pointer;transition:border-color .15s ease}#task-sort:focus{border-color:var(--border-focus)}#filters{display:flex;gap:6px;margin-top:16px;padding-bottom:14px;border-bottom:1px solid var(--border)}#filters[hidden],#charts[hidden]{display:none!important}#filters button{padding:6px 12px;border:1px solid transparent;border-radius:7px;background-color:transparent;color:var(--muted);font-size:12px;font-weight:550;transition:background-color .15s ease,color .15s ease}#filters button:hover{background-color:var(--raised);color:var(--text)}#filters button.active{background-color:var(--active);color:var(--text);border-color:var(--border)}#todo-list{display:grid;gap:6px;margin:16px 0 0;padding:0;list-style:none}@keyframes task-appear{0%{opacity:0;transform:translateY(-8px) scale(.985)}to{opacity:1;transform:translateY(0) scale(1)}}#todo-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:52px;padding:10px 14px;border:1px solid var(--border);border-radius:10px;background-color:var(--surface);color:var(--text);animation:task-appear .22s cubic-bezier(.16,1,.3,1) both;transition:background-color .15s ease,border-color .15s ease}#todo-list li:hover{background-color:var(--raised)}#todo-list li.month-heading{min-height:0;margin-top:14px;padding:4px 2px;border:0;background-color:transparent;color:var(--muted);font-size:11px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;animation:none}#todo-list li.month-heading:hover{background-color:transparent}.status-dot{display:inline-block;width:8px;height:8px;flex:0 0 8px;border-radius:50%}.priority-high{background-color:var(--danger)}.priority-medium{background-color:var(--warning)}.priority-low{background-color:var(--accent)}.done-dot{background-color:var(--positive)}.task-details{min-width:0;flex:1}.task-title{display:block;overflow-wrap:anywhere;cursor:pointer;font-size:13.5px;font-weight:450;line-height:1.4;letter-spacing:-.01em}#todo-list li.is-complete .task-title{color:var(--faint);text-decoration:line-through}.overdue-badge{display:inline-block;margin-top:4px;padding:1px 7px;border:1px solid var(--pill-danger-border);border-radius:4px;background-color:var(--pill-danger-bg);color:var(--pill-danger-ink);font-size:10px;font-weight:650;line-height:1.3}.edit-input{width:100%;padding:6px 8px;border:1px solid var(--border-focus);border-radius:6px;outline:none;background-color:var(--raised);color:var(--text);font:inherit;font-size:13.5px}.action-buttons{display:flex;gap:6px;align-items:center}#todo-list li .done-button,#todo-list li .edit-button{flex:0 0 auto;padding:5px 10px;border:1px solid var(--border);border-radius:6px;background-color:var(--raised);color:var(--muted);font-size:11px;font-weight:550;transition:background-color .15s ease,color .15s ease,border-color .15s ease}#todo-list li .done-button:hover,#todo-list li .edit-button:hover{background-color:var(--active);color:var(--text)}#todo-list li.is-complete .done-button{border-color:#30d1584d;background-color:#30d1581f;color:var(--positive)}#todo-list li .delete-button{flex:0 0 auto;padding:5px 10px;border:1px solid transparent;border-radius:6px;background-color:transparent;color:var(--faint);font-size:11px;font-weight:550;transition:background-color .15s ease,color .15s ease}#todo-list li .delete-button:hover{background-color:var(--pill-danger-bg);color:var(--danger)}#todo-list li.empty-state{display:flex;align-items:center;justify-content:center;min-height:64px;border:1px dashed var(--border);border-radius:8px;background-color:transparent;color:var(--muted);font-size:13px;font-weight:450;text-align:center;animation:none}#todo-list li.empty-state:hover{background-color:transparent}#charts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:24px;padding-top:20px;border-top:1px solid var(--border)}#charts h2{grid-column:1 / -1;margin:0;font-size:15px;font-weight:600;color:var(--text);letter-spacing:-.015em}.chart-card{min-width:0;padding:16px;border:1px solid var(--border);border-radius:var(--radius-card);background-color:var(--raised)}.chart-card h3{margin:0 0 14px;font-size:13px;font-weight:600;color:var(--muted)}.weekly-chart-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.weekly-chart-heading h3{margin:0}.month-controls{display:flex;gap:6px}.month-controls button{display:grid;width:28px;height:28px;place-items:center;border:1px solid var(--border);border-radius:50%;background-color:var(--surface);color:var(--text);font-size:10px;transition:background-color .15s ease,border-color .15s ease}.month-controls button:hover:not(:disabled){background-color:var(--active);border-color:var(--border-focus)}.month-controls button:disabled{opacity:.35;cursor:not-allowed}.chart-card canvas{width:100%;max-height:240px}@media(max-width:680px){body{padding:20px 12px 40px}.app-shell,body>div{padding:18px 14px;border-radius:12px}#todo-form{grid-template-columns:1fr 1fr}#todo-input,#todo-form button{grid-column:1 / -1}.stats-grid{grid-template-columns:repeat(2,1fr)}.stat-card:nth-child(2){border-left:1px solid var(--border)}.stat-card:nth-child(3),.stat-card:nth-child(4){border-top:1px solid var(--border)}.task-toolbar{flex-direction:column;align-items:stretch;gap:10px}.sort-box{justify-content:space-between}#task-sort{flex:1}#charts{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}