*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #fbfbfd;--bg-surface: #ffffff;--bg-elevated: #f5f5f7;--bg-grouped: #f5f5f7;--bg-input: #f5f5f7;--separator: #e8e8ed;--border: #d2d2d7;--text-primary: #1d1d1f;--text-secondary: #6e6e73;--text-tertiary: #86868b;--tint: #0071e3;--tint-hover: #0077ed;--tint-gradient: #0071e3;--green: #34c759;--orange: #ff9500;--red: #ff3b30;--purple: #af52de;--gray: #86868b;--gray2: #aeaeb2;--gray3: #d2d2d7;--gray4: #e8e8ed;--gray5: #f5f5f7;--gray6: #fbfbfd;--fill-tertiary: #f5f5f7;--fill-quaternary: #e8e8ed;--radius: 12px;--radius-lg: 18px;--radius-pill: 980px;--safe-top: env(safe-area-inset-top);--safe-bottom: env(safe-area-inset-bottom);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .04), 0 4px 12px rgba(0, 0, 0, .03);--shadow-md: 0 2px 12px rgba(0, 0, 0, .08);--shadow-toast: 0 4px 20px rgba(0, 0, 0, .12);color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--bg-primary: #000000;--bg-surface: #1c1c1e;--bg-elevated: #1c1c1e;--bg-grouped: #1c1c1e;--bg-input: #2c2c2e;--separator: #38383a;--border: #38383a;--text-primary: #f5f5f7;--text-secondary: #a1a1a6;--text-tertiary: #6e6e73;--tint: #2997ff;--tint-hover: #5ac8fa;--tint-gradient: #2997ff;--green: #30d158;--orange: #ff9f0a;--red: #ff453a;--purple: #bf5af2;--gray: #8e8e93;--gray2: #636366;--gray3: #48484a;--gray4: #3a3a3c;--gray5: #2c2c2e;--gray6: #1c1c1e;--fill-tertiary: #2c2c2e;--fill-quaternary: #3a3a3c;--shadow-sm: none;--shadow-md: none;--shadow-toast: 0 8px 40px rgba(0, 0, 0, .6)}}html,body{height:100%;font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,SF Pro Display,Helvetica Neue,Helvetica,Arial,sans-serif;background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-text-size-adjust:100%;font-size:17px;line-height:1.47059;letter-spacing:-.022em}#app{max-width:640px;margin:0 auto;min-height:100%;display:flex;flex-direction:column;padding:0 24px;padding-top:calc(var(--safe-top) + 12px);padding-bottom:calc(var(--safe-bottom) + 40px)}.header{display:flex;align-items:center;justify-content:space-between;padding:24px 0 12px;flex-shrink:0}.header h1{font-size:32px;font-weight:700;letter-spacing:-.003em;line-height:1.125;color:var(--text-primary)}.header-actions{display:flex;gap:12px;align-items:center}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border:none;border-radius:var(--radius-pill);font-size:14px;font-weight:400;cursor:pointer;transition:background .3s cubic-bezier(.25,.1,.25,1),transform .1s,opacity .3s;font-family:inherit;-webkit-tap-highlight-color:transparent;letter-spacing:-.01em}.btn:active{transform:scale(.97)}.btn-primary{background:var(--tint);color:#fff}.btn-primary:hover{background:var(--tint-hover)}.btn-ghost{background:transparent;color:var(--tint);border:none}.btn-ghost:hover{text-decoration:underline}.btn-icon{padding:8px;width:36px;height:36px;border-radius:50%;background:var(--fill-tertiary);border:none;color:var(--text-primary)}.btn-icon:hover{background:var(--fill-quaternary)}.btn-ai{background:var(--tint);color:#fff;font-size:14px;font-weight:400;padding:11px 22px;border-radius:var(--radius-pill)}.btn-ai:hover{background:var(--tint-hover)}.btn-ai.loading{opacity:.5;pointer-events:none}.quick-add{position:sticky;top:0;z-index:10;padding:12px 0 8px;background:var(--bg-primary)}.quick-add-row{display:flex;align-items:center;gap:8px;background:var(--bg-surface);border-radius:var(--radius-lg);padding:10px 14px;border:1px solid var(--separator);transition:box-shadow .3s cubic-bezier(.25,.1,.25,1),border-color .3s}.quick-add-row:focus-within{border-color:var(--tint);box-shadow:0 0 0 3px #0071e333}@media(prefers-color-scheme:dark){.quick-add-row:focus-within{border-color:var(--tint);box-shadow:0 0 0 3px #2997ff40}}.qa-field{background:var(--fill-tertiary);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);font-size:14px;font-family:inherit;padding:10px 12px;outline:none;transition:border-color .2s,box-shadow .2s}.qa-field:focus{border-color:var(--text-primary);background:var(--bg-surface)}.qa-field::placeholder{color:var(--text-tertiary)}.qa-text{flex:1;min-width:0;font-size:16px;background:transparent;border:none;padding:10px 8px}.qa-text:focus{border:none;box-shadow:none}.qa-priority-group{display:flex;gap:4px;flex-shrink:0;padding:2px;border-radius:var(--radius);outline:none}.qa-priority-group:focus-visible{box-shadow:0 0 0 2px var(--text-primary);border-radius:var(--radius)}@media(prefers-color-scheme:dark){.qa-priority-group:focus-visible{box-shadow:0 0 0 2px #fff6}}.qa-p-btn{width:34px;height:34px;border:1px solid var(--border);border-radius:50%;font-size:12px;font-weight:600;font-family:inherit;cursor:pointer;background:var(--bg-surface);color:var(--text-secondary);transition:all .2s;-webkit-tap-highlight-color:transparent;display:flex;align-items:center;justify-content:center}.qa-p-btn:hover{border-color:var(--text-primary)}.qa-p-btn:active{transform:scale(.9)}.qa-p-btn[data-value=urgent].active{background:var(--purple);color:#fff;border-color:var(--purple)}.qa-p-btn[data-value=high].active{background:var(--red);color:#fff;border-color:var(--red)}.qa-p-btn[data-value=medium].active{background:var(--orange);color:#fff;border-color:var(--orange)}.qa-p-btn[data-value=low].active{background:var(--green);color:#fff;border-color:var(--green)}.qa-category-wrap,.edit-category-wrap{flex-shrink:0;width:120px;position:relative}.edit-category-wrap{flex:1;width:auto}.qa-category,.edit-category-wrap .edit-category{width:100%}.ac-dropdown{display:none;position:absolute;top:calc(100% + 4px);left:0;right:0;background:var(--bg-surface);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow-md);overflow:hidden;z-index:20;max-height:200px;overflow-y:auto}@media(prefers-color-scheme:dark){.ac-dropdown{background:#2a2a2a}}.ac-dropdown.visible{display:block}.ac-option{padding:12px 16px;font-size:14px;cursor:pointer;transition:background .15s;color:var(--text-primary)}.ac-option+.ac-option{border-top:1px solid var(--separator)}.ac-option:hover,.ac-option.highlighted{background:var(--bg-elevated);color:var(--text-primary)}.ac-create{display:flex;align-items:center;gap:6px;color:var(--tint);font-weight:500}.ac-create:hover,.ac-create.highlighted{color:var(--tint)}.ac-create svg{flex-shrink:0}.qa-submit{background:var(--tint);border:none;color:#fff;width:38px;height:38px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .3s cubic-bezier(.25,.1,.25,1),transform .1s;-webkit-tap-highlight-color:transparent}.qa-submit:hover{background:var(--tint-hover)}.qa-submit:active{transform:scale(.9)}.qa-hint{font-size:12px;color:var(--text-tertiary);padding:8px 12px 2px;opacity:0;transform:translateY(-4px);transition:opacity .2s,transform .2s;pointer-events:none}.qa-hint.visible{opacity:1;transform:translateY(0)}.qa-hint kbd{display:inline-block;font-family:inherit;font-size:11px;padding:2px 6px;background:var(--fill-tertiary);border:1px solid var(--border);border-radius:6px;font-weight:500}@media(max-width:640px){.quick-add-row{flex-wrap:wrap}.qa-text{width:100%;flex:1 1 100%}.qa-select,.qa-category-wrap{flex:1;width:auto}}.task-list{flex:1;display:flex;flex-direction:column;gap:2px}.task-group-label{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-secondary);padding:28px 4px 10px}.task-group{background:var(--bg-elevated);border-radius:var(--radius);overflow:hidden;box-shadow:none;margin-bottom:0;display:flex;flex-direction:column;gap:0;border:none}.task-item{display:flex;align-items:center;gap:14px;padding:14px 20px;background:transparent;border:none;border-bottom:1px solid var(--separator);border-radius:0;transition:background .3s cubic-bezier(.25,.1,.25,1);cursor:default;position:relative}.task-item+.task-item{border-top:none}.task-group .task-item:last-child{border-bottom:none}.task-item:hover{background:var(--fill-quaternary)}.task-item.completed{opacity:.45}.task-item.completed .task-text{text-decoration:line-through;text-decoration-color:var(--text-tertiary)}.task-checkbox{width:22px;height:22px;border-radius:50%;border:1.5px solid var(--gray2);flex-shrink:0;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s cubic-bezier(.25,.1,.25,1);-webkit-tap-highlight-color:transparent}.task-checkbox:hover{border-color:var(--tint)}.task-checkbox:active{transform:scale(.85)}.task-item.completed .task-checkbox{background:var(--tint);border-color:var(--tint)}.task-item.completed .task-checkbox:after{content:"";width:7px;height:4px;border:2px solid #fff;border-top:none;border-right:none;transform:rotate(-45deg);margin-top:-2px}.task-content{flex:1;min-width:0}.task-text{font-size:17px;font-weight:400;line-height:1.47059;letter-spacing:-.022em;word-break:break-word;color:var(--text-primary)}.task-meta{display:flex;gap:8px;margin-top:4px;flex-wrap:wrap;align-items:center}.task-category{font-size:12px;font-weight:500;padding:2px 10px;border-radius:var(--radius-pill);background:var(--fill-tertiary);border:1px solid var(--border);color:var(--text-secondary);letter-spacing:.1px}.task-due{font-size:12px;color:var(--text-tertiary)}.task-due.overdue{color:var(--red);font-weight:500}.task-priority-badge{font-size:11px;font-weight:500;padding:3px 10px;border-radius:var(--radius-pill);text-transform:uppercase;letter-spacing:.04em;border:none}.task-priority-badge.urgent{background:#af52de1f;color:var(--purple)}.task-priority-badge.high{background:#ff3b301f;color:var(--red)}.task-priority-badge.medium{background:#ff95001f;color:var(--orange)}.task-priority-badge.low{background:#34c7591f;color:var(--green)}@media(prefers-color-scheme:dark){.task-priority-badge.urgent{background:#bf5af22e}.task-priority-badge.high{background:#ff453a2e}.task-priority-badge.medium{background:#ff9f0a2e}.task-priority-badge.low{background:#30d1582e}}.task-content[data-edit-id]{cursor:pointer;border-radius:8px;padding:2px 4px;margin:-2px -4px;transition:background .15s}.task-content[data-edit-id]:hover{background:var(--fill-quaternary)}.task-item.editing{padding:16px 20px;align-items:stretch}.edit-form{flex:1;display:flex;flex-direction:column;gap:10px}.edit-text{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);font-size:16px;font-family:inherit;padding:12px 14px;outline:none;width:100%;transition:border-color .2s}.edit-text:focus{border-color:var(--tint);box-shadow:0 0 0 3px #0071e333}@media(prefers-color-scheme:dark){.edit-text:focus{box-shadow:0 0 0 3px #2997ff40}}.edit-row{display:flex;gap:8px}.edit-priority,.edit-category{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);font-size:14px;font-family:inherit;padding:10px 14px;outline:none;flex:1}.edit-priority{-webkit-appearance:none;appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%23717171' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:30px}.edit-priority:focus,.edit-category:focus{border-color:var(--text-primary)}.edit-actions{display:flex;gap:8px}.edit-save,.edit-cancel,.edit-delete{border:none;border-radius:var(--radius-pill);font-size:14px;font-weight:500;font-family:inherit;padding:10px 20px;cursor:pointer;transition:all .2s;-webkit-tap-highlight-color:transparent}.edit-save{background:var(--tint);color:#fff}.edit-save:hover{background:var(--tint-hover)}.edit-cancel{background:var(--bg-surface);color:var(--text-primary);border:1px solid var(--border)}.edit-cancel:hover{background:var(--bg-elevated)}.edit-delete{background:none;color:var(--red);margin-left:auto}.edit-delete:hover{background:var(--fill-tertiary)}.edit-save:active,.edit-cancel:active,.edit-delete:active{transform:scale(.96)}.task-delete{background:none;border:none;color:var(--text-tertiary);cursor:pointer;padding:6px;font-size:14px;opacity:0;transition:opacity .15s,color .15s;-webkit-tap-highlight-color:transparent;border-radius:50%}.task-item:hover .task-delete{opacity:1}.task-delete:hover{color:var(--red);background:var(--fill-tertiary)}.completed-toggle{display:flex;align-items:center;gap:8px;padding:16px 4px;cursor:pointer;color:var(--text-secondary);font-size:14px;font-weight:500;background:none;border:none;width:100%;text-align:left;font-family:inherit;-webkit-tap-highlight-color:transparent}.completed-toggle:hover{color:var(--text-primary)}.completed-toggle .arrow{transition:transform .25s cubic-bezier(.4,0,.2,1);font-size:11px;color:var(--text-tertiary)}.completed-toggle .arrow.open{transform:rotate(90deg)}.completed-count{font-size:14px;color:var(--text-tertiary);margin-left:2px}.empty-state{text-align:center;padding:80px 24px;display:flex;flex-direction:column;align-items:center;gap:8px}.empty-state-icon{font-size:48px;margin-bottom:12px;opacity:.25}.empty-state-title{font-size:24px;font-weight:700;color:var(--text-primary);letter-spacing:-.003em}.empty-state-subtitle{font-size:14px;color:var(--text-secondary);line-height:1.5}.sign-in-screen{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:60px 24px;text-align:center}.sign-in-screen h2{font-size:32px;font-weight:700;letter-spacing:-.003em;line-height:1.125;color:var(--text-primary)}.sign-in-screen p{font-size:17px;color:var(--text-secondary);line-height:1.47059;max-width:340px;letter-spacing:-.022em}.btn-sign-in{display:inline-flex;align-items:center;gap:10px;padding:14px 32px;background:var(--tint);color:#fff;border:none;border-radius:var(--radius-pill);font-size:17px;font-weight:400;cursor:pointer;font-family:inherit;margin-top:20px;transition:background .3s cubic-bezier(.25,.1,.25,1),transform .1s;-webkit-tap-highlight-color:transparent;letter-spacing:-.022em}.btn-sign-in:hover{background:var(--tint-hover)}.btn-sign-in:active{transform:scale(.97)}.btn-sign-in svg{width:20px;height:20px}.user-avatar{width:32px;height:32px;border-radius:50%;object-fit:cover;cursor:pointer;transition:opacity .15s;border:2px solid var(--border)}.user-avatar:hover{opacity:.8}@keyframes spin{to{transform:rotate(360deg)}}.spinner{width:18px;height:18px;border:2.5px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}.toast{position:fixed;bottom:calc(var(--safe-bottom) + 32px);left:50%;transform:translate(-50%) translateY(80px);background:var(--text-primary);color:var(--bg-primary);padding:14px 24px;border-radius:var(--radius);font-size:14px;font-weight:500;box-shadow:var(--shadow-toast);transition:transform .4s cubic-bezier(.16,1,.3,1),opacity .4s;z-index:100;opacity:0;letter-spacing:-.1px}.toast.visible{transform:translate(-50%) translateY(0);opacity:1}@media(max-width:640px){#app{padding:0 16px;padding-top:calc(var(--safe-top) + 4px);padding-bottom:calc(var(--safe-bottom) + 24px)}.task-delete{opacity:.6;padding:8px}.header h1{font-size:28px}}.task-item{animation:fadeIn .25s cubic-bezier(.16,1,.3,1)}@keyframes fadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--gray3);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--gray2)}