:root{color-scheme:light;--bg: #f1f5f9;--surface: #fff;--surface-hover: #f8fafc;--surface-muted: #f1f5f9;--text: #1e293b;--text-2: #475569;--text-muted: #64748b;--text-faint: #94a3b8;--border: #e2e8f0;--border-strong: #cbd5e1;--header-bg: #1e293b;--danger-bg: #fef2f2;--danger-bg-hover: #fee2e2;--danger-border: #fecaca;--danger-text: #dc2626}:root[data-theme=dark]{color-scheme:dark;--bg: #0f172a;--surface: #1e293b;--surface-hover: #273449;--surface-muted: #334155;--text: #e2e8f0;--text-2: #cbd5e1;--text-muted: #94a3b8;--text-faint: #64748b;--border: #334155;--border-strong: #475569;--header-bg: #020617;--danger-bg: rgb(239 68 68 / .14);--danger-bg-hover: rgb(239 68 68 / .22);--danger-border: rgb(239 68 68 / .35);--danger-text: #f87171}:root[data-theme=dark] .quadrant,:root[data-theme=dark] .accordion-body{background:color-mix(in srgb,var(--q-color, #6b7280) 7%,var(--bg))}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}.auth-screen{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:1rem}.auth-card{background:var(--surface);border-radius:12px;padding:2.5rem 2rem;max-width:360px;width:100%;text-align:center;box-shadow:0 4px 24px #00000014}.auth-card h1{font-size:1.5rem;font-weight:700;margin-bottom:.5rem;color:var(--text)}.auth-card p{font-size:.9rem;color:var(--text-muted);margin-bottom:1.5rem;line-height:1.5}.auth-loading{color:var(--text-faint);font-size:.9rem}.auth-error{color:#ef4444!important;margin-bottom:1rem!important;font-size:.85rem!important}.sign-in-btn{display:inline-flex;align-items:center;gap:.5rem;background:#4285f4;color:#fff;border:none;border-radius:6px;padding:.65rem 1.25rem;font-size:.95rem;font-weight:500;cursor:pointer;transition:background .15s}.sign-in-btn:hover:not(:disabled){background:#3367d6}.sign-in-btn:disabled{opacity:.6;cursor:not-allowed}.app{display:flex;flex-direction:column;min-height:100vh}.app-header{background:var(--header-bg);color:#fff;padding:0 1rem;height:48px;display:flex;align-items:center;justify-content:space-between;flex-shrink:0}.app-title{font-weight:600;font-size:1rem}.header-actions{display:flex;align-items:center;gap:8px}.install-btn{background:transparent;color:#94a3b8;border:1px solid #334155;border-radius:5px;padding:.3rem .7rem;font-size:.8rem;cursor:pointer;transition:color .15s,border-color .15s}.install-btn:hover{color:#fff;border-color:#64748b}.logout-btn{background:transparent;color:#94a3b8;border:1px solid #334155;border-radius:5px;padding:.3rem .7rem;font-size:.8rem;cursor:pointer;transition:color .15s,border-color .15s}.logout-btn:hover{color:#fff;border-color:#64748b}.theme-btn{background:transparent;color:#94a3b8;border:1px solid #334155;border-radius:5px;padding:.3rem .7rem;font-size:.8rem;cursor:pointer;transition:color .15s,border-color .15s}.theme-btn:hover{color:#fff;border-color:#64748b}.app-main{flex:1;overflow:hidden;display:flex;flex-direction:column}.matrix-wrapper{display:flex;flex-direction:column;flex:1;overflow:hidden;padding:4px 4px 4px 0}.matrix-top-axis{display:flex;height:22px;flex-shrink:0;padding-left:28px}.matrix-corner{width:28px;flex-shrink:0}.axis-col-label{flex:1;display:flex;align-items:center;justify-content:center;font-size:.6rem;font-weight:700;letter-spacing:.12em;color:var(--text-faint);text-transform:uppercase}.matrix-main{display:flex;flex:1;overflow:hidden}.matrix-left-axis{display:flex;flex-direction:column;width:28px;flex-shrink:0}.axis-row-label{flex:1;display:flex;align-items:center;justify-content:center;writing-mode:vertical-rl;transform:rotate(180deg);font-size:.6rem;font-weight:700;letter-spacing:.12em;color:var(--text-faint);text-transform:uppercase}.matrix-grid{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;flex:1;gap:3px;background:var(--border-strong);overflow:hidden}.matrix-error{padding:8px 12px;background:var(--danger-bg);color:#ef4444;font-size:.8rem;flex-shrink:0}.quadrant{background:var(--q-bg, #f9fafb);display:flex;flex-direction:column;overflow:hidden}.quadrant-header{background:var(--surface);border-top:3px solid var(--q-color, #6b7280);padding:8px 10px;display:flex;align-items:center;justify-content:space-between;flex-shrink:0;gap:8px}.quadrant-header-info{display:flex;flex-direction:column;min-width:0}.quadrant-label{font-weight:700;font-size:.8rem;color:var(--q-color, #6b7280);white-space:nowrap}.quadrant-subtitle{font-size:.65rem;color:var(--text-faint);white-space:nowrap}.quadrant-header-controls{display:flex;align-items:center;gap:6px;flex-shrink:0}.task-count{background:var(--q-color, #6b7280);color:#fff;border-radius:10px;padding:1px 6px;font-size:.65rem;font-weight:700}.sort-btn{background:transparent;border:1px solid var(--border);border-radius:4px;font-size:.65rem;color:var(--text-faint);padding:2px 6px;cursor:pointer;white-space:nowrap;transition:border-color .15s,color .15s}.sort-btn:hover{border-color:var(--text-faint);color:var(--text-muted)}.sort-btn.active{border-color:var(--q-color, #6b7280);color:var(--q-color, #6b7280)}.quadrant-body{flex:1;overflow-y:auto;padding:8px;display:flex;flex-direction:column;gap:6px;transition:background-color .15s}.quadrant-body.drag-over{background-color:color-mix(in srgb,var(--q-color) 12%,transparent)}.quadrant-empty{color:var(--border-strong);font-size:.8rem;text-align:center;padding:1.5rem 0}.add-task-btn{flex-shrink:0;background:var(--q-color, #6b7280);border:none;border-radius:0;padding:10px 14px;font-size:.82rem;font-weight:600;color:#fff;cursor:pointer;text-align:center;transition:opacity .15s;letter-spacing:.01em}.add-task-btn:hover{opacity:.88}.task-card{background:var(--surface);border-radius:6px;padding:8px 8px 8px 6px;display:flex;align-items:flex-start;gap:8px;box-shadow:0 1px 3px #0000000f;cursor:pointer;transition:box-shadow .15s}.task-card:hover{box-shadow:0 2px 8px #0000001a}.task-card--dragging{box-shadow:0 8px 24px #0000002e;opacity:.95}.drag-handle{color:var(--border-strong);font-size:.9rem;cursor:grab;padding:1px 1px 0;flex-shrink:0;line-height:1;transition:color .15s;-webkit-user-select:none;user-select:none}.task-card:hover .drag-handle{color:var(--text-faint)}.drag-handle:active{cursor:grabbing}.task-checkbox{width:16px;height:16px;border:2px solid var(--border-strong);border-radius:50%;background:transparent;cursor:pointer;flex-shrink:0;margin-top:1px;padding:0;transition:border-color .15s}.task-checkbox:hover{border-color:var(--q-color, #6b7280)}.task-body{flex:1;min-width:0}.task-title{font-size:.82rem;font-weight:600;color:var(--text);line-height:1.3;word-break:break-word}.task-notes{font-size:.73rem;color:var(--text-muted);margin-top:2px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;word-break:break-word}.task-meta{display:flex;align-items:center;gap:4px;margin-top:5px;flex-wrap:wrap}.due-chip{font-size:.68rem;color:var(--text-muted);background:var(--surface-muted);border-radius:4px;padding:1px 5px}.overdue-chip{font-size:.62rem;font-weight:700;color:#ef4444;background:var(--danger-bg);border-radius:4px;padding:1px 5px;letter-spacing:.04em}.task-menu{position:relative;flex-shrink:0}.menu-btn{background:transparent;border:none;color:var(--border-strong);cursor:pointer;font-size:1.1rem;padding:0 2px;line-height:1;transition:color .15s}.task-card:hover .menu-btn,.menu-btn:hover{color:var(--text-faint)}.menu-dropdown{position:absolute;right:0;top:calc(100% + 2px);background:var(--surface);border:1px solid var(--border);border-radius:6px;box-shadow:0 4px 16px #0000001f;z-index:50;min-width:140px;overflow:hidden}.menu-item{display:block;width:100%;padding:8px 12px;font-size:.8rem;color:var(--text-2);background:transparent;border:none;text-align:left;cursor:pointer;transition:background .1s}.menu-item:hover{background:var(--surface-hover)}.menu-item--danger{color:#ef4444}.menu-item--danger:hover{background:var(--danger-bg)}.menu-item--move{color:var(--q-color, var(--text-muted))}.menu-item--move:hover{background:color-mix(in srgb,var(--q-color, var(--text-muted)) 8%,var(--surface))}.menu-divider{height:1px;background:var(--surface-muted);margin:2px 0}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;z-index:100}.modal{position:fixed;z-index:101;background:var(--surface);display:flex;flex-direction:column;top:50%;left:50%;transform:translate(-50%,-50%);width:min(480px,calc(100vw - 2rem));max-height:calc(100vh - 4rem);border-radius:12px;box-shadow:0 8px 40px #0003;overflow:hidden}@media (max-width: 600px){.modal{top:auto;bottom:0;left:0;right:0;transform:none;width:100%;max-height:90vh;border-radius:16px 16px 0 0}}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px 12px;border-bottom:1px solid var(--surface-muted);flex-shrink:0}.modal-header-left{display:flex;align-items:center;gap:10px}.modal-title{font-size:1rem;font-weight:700;color:var(--text)}.modal-quadrant-badge{font-size:.72rem;font-weight:700;color:var(--q-color);background:color-mix(in srgb,var(--q-color) 12%,var(--surface));border:1px solid color-mix(in srgb,var(--q-color) 30%,var(--surface));border-radius:20px;padding:2px 10px;white-space:nowrap}.modal-close{background:transparent;border:none;color:var(--text-faint);font-size:.9rem;cursor:pointer;padding:4px 8px;border-radius:4px;transition:color .15s,background .15s}.modal-close:hover{color:var(--text-2);background:var(--surface-muted)}.modal-form{padding:16px 20px;overflow-y:auto;display:flex;flex-direction:column;gap:14px}.form-field{display:flex;flex-direction:column;gap:5px}.form-label{font-size:.78rem;font-weight:600;color:var(--text-2)}.form-required{color:#ef4444}.form-input{background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:8px 10px;font-size:.875rem;color:var(--text);outline:none;transition:border-color .15s,box-shadow .15s;width:100%;font-family:inherit}.form-input--date{cursor:pointer}.form-input:focus{border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61f}.form-textarea{background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:8px 10px;font-size:.875rem;color:var(--text);outline:none;resize:vertical;min-height:72px;transition:border-color .15s,box-shadow .15s;width:100%;font-family:inherit}.form-textarea:focus{border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61f}.form-quadrant-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}.form-quadrant-btn{border:2px solid var(--border);border-radius:6px;padding:8px 10px;font-size:.78rem;font-weight:600;color:var(--text-muted);background:var(--surface);cursor:pointer;transition:border-color .15s,color .15s,background .15s;text-align:center;font-family:inherit;display:flex;flex-direction:column;align-items:center;gap:2px}.form-quadrant-label{font-size:.78rem;font-weight:700;line-height:1.2}.form-quadrant-sub{font-size:.62rem;font-weight:400;opacity:.75;line-height:1.2}.form-quadrant-btn:hover{border-color:var(--q-color);color:var(--q-color)}.form-quadrant-btn.selected{border-color:var(--q-color);color:var(--q-color);background:color-mix(in srgb,var(--q-color) 10%,var(--surface))}.form-quadrant-btn.selected .form-quadrant-sub{opacity:1}.form-error{font-size:.8rem;color:#ef4444}.modal-footer{display:flex;justify-content:space-between;align-items:center;gap:8px;padding-top:4px}.modal-footer-right{display:flex;gap:8px}.btn-secondary{border:1px solid var(--border);border-radius:6px;padding:8px 16px;font-size:.85rem;font-weight:500;color:var(--text-muted);background:var(--surface);cursor:pointer;transition:background .15s,border-color .15s;font-family:inherit}.btn-secondary:hover{background:var(--surface-hover);border-color:var(--border-strong)}.btn-primary{border:none;border-radius:6px;padding:8px 18px;font-size:.85rem;font-weight:600;color:#fff;background:#3b82f6;cursor:pointer;transition:background .15s;font-family:inherit}.btn-primary:hover:not(:disabled){background:#2563eb}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-danger{border:none;border-radius:6px;padding:8px 16px;font-size:.85rem;font-weight:500;color:#ef4444;background:var(--danger-bg);cursor:pointer;transition:background .15s;font-family:inherit}.btn-danger:hover:not(:disabled){background:var(--danger-bg-hover)}.btn-danger:disabled{opacity:.5;cursor:not-allowed}.overdue-banner{display:flex;align-items:center;gap:8px;background:var(--danger-bg);border-bottom:1px solid var(--danger-border);padding:6px 12px;flex-shrink:0;flex-wrap:wrap}.overdue-banner-label{font-size:.75rem;font-weight:700;color:var(--danger-text);white-space:nowrap}.overdue-banner-chip{font-size:.72rem;font-weight:600;color:var(--q-color, var(--danger-text));background:color-mix(in srgb,var(--q-color, var(--danger-text)) 10%,var(--surface));border:1px solid color-mix(in srgb,var(--q-color, var(--danger-text)) 25%,var(--surface));border-radius:4px;padding:2px 8px;cursor:pointer;transition:background .15s;white-space:nowrap}.overdue-banner-chip:hover{background:color-mix(in srgb,var(--q-color, var(--danger-text)) 18%,var(--surface))}.mobile-matrix{display:flex;flex-direction:column;flex:1;overflow:hidden}.mobile-accordion{flex:1;overflow-y:auto}.accordion-panel{border-bottom:1px solid var(--border)}.accordion-header{display:flex;align-items:center;background:var(--surface);border-left:4px solid var(--q-color, #6b7280);transition:background .15s}.accordion-header.open{background:color-mix(in srgb,var(--q-color) 6%,var(--surface))}.accordion-toggle{flex:1;display:flex;align-items:center;gap:8px;padding:12px 10px;background:transparent;border:none;text-align:left;cursor:pointer;min-width:0}.accordion-label{font-weight:700;font-size:.9rem;color:var(--q-color, var(--text));white-space:nowrap}.accordion-subtitle{flex:1;font-size:.7rem;color:var(--text-faint);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}.accordion-count{background:var(--q-color, #6b7280);color:#fff;border-radius:10px;padding:1px 6px;font-size:.65rem;font-weight:700;flex-shrink:0}.accordion-controls{display:flex;align-items:center;gap:6px;padding-right:12px;flex-shrink:0}.accordion-chevron{font-size:.6rem;color:var(--text-faint)}.accordion-body{background:var(--q-bg, #f9fafb)}.accordion-body .quadrant{overflow:visible}.accordion-body .quadrant-body{overflow-y:visible;flex:none;max-height:none}.mobile-tab-bar{display:flex;flex-shrink:0;background:var(--surface);border-top:1px solid var(--border);height:56px}.tab-btn{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;background:transparent;border:none;cursor:pointer;padding:6px 4px;position:relative;transition:background .15s}.tab-btn.active{background:color-mix(in srgb,var(--q-color) 8%,var(--surface))}.tab-btn.active:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--q-color)}.tab-label{font-size:.7rem;font-weight:600;color:var(--text-faint)}.tab-btn.active .tab-label{color:var(--q-color)}.tab-count{font-size:.6rem;color:#fff;background:var(--q-color);border-radius:8px;padding:0 4px;min-width:14px;text-align:center}@keyframes task-complete{0%{opacity:1;transform:translate(0)}20%{opacity:.7}to{opacity:0;transform:translate(16px)}}.task-card--completing{animation:task-complete 2s ease-out forwards;pointer-events:none}.task-card--completing .task-title{text-decoration:line-through;color:var(--text-faint)}.task-checkbox--completing{border-color:#22c55e;background:#22c55e}