:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#213547;background-color:#fff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-text-size-adjust:100%}*,*:before,*:after{box-sizing:border-box}html{overscroll-behavior:none}body{margin:0;min-width:320px;min-height:100vh;scroll-behavior:smooth;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}h1,h2,h3,h4,h5,h6{margin:0;font-weight:600;line-height:1.2}button{font-family:inherit}input,textarea,select{font-size:16px}@media(prefers-color-scheme:dark){:root{color:#ffffffde;background-color:#1a1a1a}}.settings-overlay{position:fixed;inset:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:1rem}.settings-modal{background-color:var(--modal-bg, #ffffff);border-radius:12px;box-shadow:0 20px 50px #0003;width:100%;max-width:400px;max-height:calc(100vh - 2rem);overflow-y:auto;animation:modal-enter .2s ease-out}@keyframes modal-enter{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.settings-header{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;border-bottom:1px solid var(--border-color, #e5e5e5)}.settings-header h2{margin:0;font-size:1.125rem;font-weight:600}.settings-close{display:flex;align-items:center;justify-content:center;width:2rem;height:2rem;padding:0;background:transparent;border:none;border-radius:4px;font-size:1.5rem;line-height:1;color:#666;cursor:pointer;-webkit-tap-highlight-color:transparent}.settings-close:hover,.settings-close:active{background-color:var(--hover-bg, #f5f5f5);color:#333}.settings-content{padding:1.25rem;display:flex;flex-direction:column;gap:1rem}.settings-field{display:flex;flex-direction:column;gap:.5rem}.settings-label{font-size:.875rem;font-weight:500;color:#666}.settings-input{width:100%;padding:.75rem;font-size:1rem;border:1px solid var(--border-color, #e5e5e5);border-radius:6px;background-color:var(--input-bg, #ffffff);color:inherit;box-sizing:border-box}.settings-input:focus{outline:none;border-color:#646cff;box-shadow:0 0 0 3px #646cff1a}.settings-input-error{border-color:#dc2626}.settings-input-error:focus{border-color:#dc2626;box-shadow:0 0 0 3px #dc26261a}.settings-error{font-size:.8125rem;color:#dc2626}.settings-status{display:flex;align-items:center;gap:.5rem;font-size:.875rem}.settings-status-label{color:#666}.settings-status-testing{display:flex;align-items:center;gap:.375rem;color:#666}.settings-status-connected{color:#059669;font-weight:500}.settings-status-connected:before{content:"●";margin-right:.25rem}.settings-status-disconnected{color:#dc2626;font-weight:500}.settings-status-disconnected:before{content:"●";margin-right:.25rem}.settings-status-unknown{color:#888}.settings-status-unknown:before{content:"○";margin-right:.25rem}.settings-note{margin:0;font-size:.8125rem;color:#888;font-style:italic}.settings-test-btn{align-self:flex-start}.settings-actions{display:flex;gap:.75rem;justify-content:flex-end;padding:1rem 1.25rem;border-top:1px solid var(--border-color, #e5e5e5)}@media(max-width:400px){.settings-actions{flex-direction:column}.settings-actions .btn{width:100%}}@media(prefers-color-scheme:dark){.settings-modal{--modal-bg: #1a1a1a}.settings-close{color:#aaa}.settings-close:hover,.settings-close:active{color:#fff}.settings-label,.settings-status-label{color:#aaa}}@media(prefers-reduced-motion:reduce){.settings-modal{animation:none}}.app{max-width:600px;margin:0 auto;padding:.75rem}.app-header{display:flex;align-items:center;justify-content:center;position:relative;margin-bottom:1.5rem}.app-header h1{font-size:1.5rem;font-weight:600;margin:0}.btn-settings{position:absolute;right:0;display:flex;align-items:center;justify-content:center;width:44px;height:44px;padding:0;background:transparent;border:none;border-radius:8px;color:#666;cursor:pointer;-webkit-tap-highlight-color:transparent;transition:background-color .2s,color .2s}.btn-settings:hover,.btn-settings:active{background-color:var(--hover-bg, #f5f5f5);color:#333}.btn-settings:focus-visible{outline:2px solid #646cff;outline-offset:2px}.api-warning-banner{display:flex;flex-direction:column;align-items:center;gap:.5rem;padding:.75rem 1rem;margin-bottom:1rem;background-color:#fef3c7;border:1px solid #f59e0b;border-radius:8px;text-align:center;color:#92400e;font-size:.875rem}.btn-configure{padding:.375rem .75rem;background-color:#f59e0b;color:#fff;border:none;border-radius:4px;font-size:.8125rem;font-weight:500;cursor:pointer;-webkit-tap-highlight-color:transparent}.btn-configure:hover,.btn-configure:active{background-color:#d97706}.app-main{display:flex;flex-direction:column;gap:1.25rem}.error-banner{display:flex;flex-direction:column;gap:.75rem;padding:.875rem 1rem;background-color:#fee2e2;border:1px solid #fca5a5;border-radius:8px}.error-message{color:#dc2626;font-size:.875rem;line-height:1.4}.error-actions{display:flex;gap:.5rem;align-items:center}.btn-retry{background-color:#dc2626;color:#fff;padding:.5rem 1rem;font-size:.8125rem}.btn-retry:hover:not(:disabled),.btn-retry:active:not(:disabled){background-color:#b91c1c}.btn-dismiss{background-color:transparent;color:#dc2626;padding:.25rem .625rem;font-size:1.25rem;font-weight:700;line-height:1}.btn-dismiss:hover:not(:disabled),.btn-dismiss:active:not(:disabled){background-color:#dc26261a}.error-boundary{display:flex;justify-content:center;align-items:center;min-height:50vh;padding:1.5rem}.error-boundary-content{text-align:center;max-width:400px}.error-boundary-content h2{margin:0 0 .75rem;font-size:1.25rem;color:#dc2626}.error-boundary-content p{margin:0 0 1.5rem;color:#666}.error-boundary-actions{display:flex;gap:.75rem;justify-content:center}.form-input-error{border-color:#dc2626}.form-input-error:focus{border-color:#dc2626;box-shadow:0 0 0 3px #dc26261a}.field-error{display:block;margin-top:.375rem;font-size:.8125rem;color:#dc2626}.todo-form{display:flex;flex-direction:column;gap:.75rem;padding:1rem;background-color:var(--form-bg, #f9f9f9);border-radius:8px}.form-group{position:relative}.form-input,.form-textarea{width:100%;padding:.875rem;font-size:1rem;border:1px solid var(--border-color, #e5e5e5);border-radius:6px;background-color:var(--input-bg, #ffffff);color:inherit;box-sizing:border-box;font-size:16px}.form-input{padding-right:4.5rem}.form-input:focus,.form-textarea:focus{outline:none;border-color:#646cff;box-shadow:0 0 0 3px #646cff1a}.form-textarea{resize:vertical;min-height:70px}.char-count{position:absolute;right:10px;bottom:10px;font-size:.75rem;color:#888;pointer-events:none;transition:color .2s}.char-count-warning{color:#d97706}.char-count-limit{color:#dc2626;font-weight:500}.form-error{padding:.625rem;background-color:#fee2e2;color:#dc2626;border-radius:4px;font-size:.875rem}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:44px;padding:.75rem 1rem;font-size:.9375rem;font-weight:500;border-radius:6px;border:1px solid transparent;cursor:pointer;transition:background-color .2s,border-color .2s,opacity .2s;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none}.btn:disabled{opacity:.6;cursor:not-allowed}.btn:active:not(:disabled){transform:scale(.98)}.btn-primary{background-color:#646cff;color:#fff}.btn-primary:hover:not(:disabled),.btn-primary:active:not(:disabled){background-color:#535bf2}.btn-secondary{background-color:transparent;border-color:var(--border-color, #e5e5e5);color:inherit}.btn-secondary:hover:not(:disabled),.btn-secondary:active:not(:disabled){background-color:var(--hover-bg, #f5f5f5)}.btn-edit{background-color:transparent;color:#646cff;padding:.5rem .75rem}.btn-edit:hover:not(:disabled),.btn-edit:active:not(:disabled){background-color:#646cff1a}.btn-delete{background-color:transparent;color:#dc2626;padding:.5rem .75rem}.btn-delete:hover:not(:disabled),.btn-delete:active:not(:disabled){background-color:#dc26261a}.btn-submit{align-self:stretch;width:100%}.todo-filters{display:flex;flex-direction:column;gap:.75rem;padding:1rem;background-color:var(--form-bg, #f9f9f9);border-radius:8px}.filter-group{display:flex;flex-direction:column;gap:.5rem}.filter-label{font-size:.875rem;font-weight:500;color:#666}.filter-buttons{display:flex;gap:.5rem}.filter-btn{flex:1;min-height:44px;padding:.625rem .75rem;font-size:.875rem;font-weight:500;background-color:transparent;border:1px solid var(--border-color, #e5e5e5);border-radius:6px;cursor:pointer;transition:background-color .2s,border-color .2s;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none}.filter-btn:active{transform:scale(.98)}.filter-btn.active{background-color:#646cff;border-color:#646cff;color:#fff}.filter-btn:not(.active):hover,.filter-btn:not(.active):active{background-color:var(--hover-bg, #f5f5f5)}.sort-controls{display:flex;gap:.5rem}.sort-select{flex:1;min-height:44px;padding:.625rem .75rem;font-size:1rem;border:1px solid var(--border-color, #e5e5e5);border-radius:6px;background-color:var(--input-bg, #ffffff);color:inherit;cursor:pointer}.sort-select:focus{outline:none;border-color:#646cff;box-shadow:0 0 0 3px #646cff1a}.sort-order-btn{min-width:44px;min-height:44px;padding:.625rem;font-size:1.25rem;font-weight:600;background-color:transparent;border:1px solid var(--border-color, #e5e5e5);border-radius:6px;cursor:pointer;transition:background-color .2s;-webkit-tap-highlight-color:transparent}.sort-order-btn:hover,.sort-order-btn:active{background-color:var(--hover-bg, #f5f5f5)}.sort-order-btn:active{transform:scale(.98)}.todo-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.625rem}.todo-list-loading,.todo-list-empty{text-align:center;padding:2rem 1rem;color:#888;font-style:italic}.spinner{display:inline-block;width:1em;height:1em;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin .75s linear infinite;vertical-align:middle}.spinner-sm{width:.875em;height:.875em;border-width:1.5px}.spinner-lg{width:2rem;height:2rem;border-width:3px}@keyframes spin{to{transform:rotate(360deg)}}.todo-list-loading{display:flex;flex-direction:column;align-items:center;gap:.75rem}.todo-list-loading .spinner{color:#646cff}.btn-loading{position:relative;color:transparent!important}.btn-loading .spinner{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);color:currentColor}.btn-loading.btn-primary .spinner{color:#fff}.btn-loading.btn-delete .spinner{color:#dc2626}.btn-loading.btn-edit .spinner{color:#646cff}.todo-checkbox-loading{position:relative}.todo-checkbox-loading input[type=checkbox]{opacity:.3}.todo-checkbox-loading .spinner{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);color:#646cff}.todo-item{position:relative;display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;gap:.5rem .75rem;padding:1rem;background-color:var(--item-bg, #ffffff);border:1px solid var(--border-color, #e5e5e5);border-radius:8px;transition:border-color .2s,opacity .2s;overflow:hidden}.todo-item:active{border-color:#646cff}.todo-item-completed .todo-title{text-decoration:line-through;opacity:.6}.todo-item-completed .todo-description{opacity:.5}.todo-item-optimistic{opacity:.85;border-style:dashed}.todo-item-optimistic:after{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,#646cff,transparent);background-size:200% 100%;animation:optimistic-shimmer 1.5s ease-in-out infinite}@keyframes optimistic-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.todo-checkbox{grid-row:1;grid-column:1;display:flex;align-items:flex-start;justify-content:center;min-width:44px;min-height:44px;margin:-.5rem;padding:.5rem}.todo-checkbox input[type=checkbox]{width:1.375rem;height:1.375rem;cursor:pointer;accent-color:#646cff}.todo-content{grid-row:1;grid-column:2;min-width:0;padding-top:.25rem}.todo-title{margin:0;font-size:1rem;font-weight:500;word-wrap:break-word;overflow-wrap:break-word}.todo-description{margin:.375rem 0 0;font-size:.875rem;color:#666;word-wrap:break-word;overflow-wrap:break-word}.todo-actions{grid-row:2;grid-column:1 / -1;display:flex;gap:.5rem;justify-content:flex-end;padding-top:.25rem;border-top:1px solid var(--border-color, #e5e5e5);margin-top:.25rem}.todo-item-error{grid-column:1 / -1;padding:.5rem;background-color:#fee2e2;color:#dc2626;border-radius:4px;font-size:.8125rem}.todo-item-editing{display:block}.todo-edit-form{display:flex;flex-direction:column;gap:.75rem}.todo-edit-form .form-group{position:relative}.todo-edit-title,.todo-edit-description{width:100%;padding:.75rem 4.5rem .75rem .75rem;font-size:1rem;border:1px solid var(--border-color, #e5e5e5);border-radius:4px;background-color:var(--input-bg, #ffffff);color:inherit;box-sizing:border-box;font-size:16px}.todo-edit-title:focus,.todo-edit-description:focus{outline:none;border-color:#646cff;box-shadow:0 0 0 3px #646cff1a}.todo-edit-description{resize:vertical;min-height:60px}.todo-edit-actions{display:flex;gap:.5rem}.todo-edit-actions .btn{flex:1}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.btn:focus-visible,.form-input:focus-visible,.form-textarea:focus-visible,.todo-edit-title:focus-visible,.todo-edit-description:focus-visible,.todo-checkbox input:focus-visible,.filter-btn:focus-visible,.sort-select:focus-visible,.sort-order-btn:focus-visible{outline:2px solid #646cff;outline-offset:2px}@media(min-width:480px){.app{padding:1rem}.app-header{margin-bottom:2rem}.app-header h1{font-size:2rem}.app-main{gap:1.5rem}.api-warning-banner{flex-direction:row;justify-content:center}.error-banner{flex-direction:row;justify-content:space-between;align-items:center}.btn-submit{align-self:flex-start;width:auto}.todo-filters{flex-direction:row;align-items:flex-end;justify-content:space-between}.filter-group{flex-direction:column}.filter-btn{flex:none;padding:.625rem 1rem}.todo-item{grid-template-columns:auto 1fr auto;grid-template-rows:auto}.todo-actions{grid-row:1;grid-column:3;border-top:none;margin-top:0;padding-top:0}.todo-edit-actions .btn{flex:none}}@media(min-width:768px){.app{padding:1.5rem}@media(hover:hover){.todo-item:hover{border-color:#646cff}}}@media(prefers-color-scheme:dark){.app{--form-bg: #2a2a2a;--item-bg: #2a2a2a;--input-bg: #1a1a1a;--border-color: #404040;--hover-bg: #333333}.error-banner{background-color:#dc262626;border-color:#dc26264d}.form-error,.todo-item-error{background-color:#dc262626}.error-boundary-content p,.todo-description{color:#aaa}.char-count{color:#666}.filter-label,.btn-settings{color:#aaa}.btn-settings:hover,.btn-settings:active{color:#fff}.api-warning-banner{background-color:#f59e0b26;border-color:#f59e0b4d;color:#fbbf24}}.toast-container{position:fixed;bottom:1rem;left:50%;transform:translate(-50%);display:flex;flex-direction:column;gap:.5rem;z-index:1000;max-width:calc(100vw - 2rem);width:100%;max-width:400px;pointer-events:none}.toast{display:flex;align-items:center;gap:.625rem;padding:.75rem 1rem;border-radius:8px;box-shadow:0 4px 12px #00000026;animation:toast-enter .3s ease-out;pointer-events:auto}.toast-success{background-color:#059669;color:#fff}.toast-error{background-color:#dc2626;color:#fff}.toast-info{background-color:#2563eb;color:#fff}.toast-icon{flex-shrink:0;width:1.25rem;height:1.25rem;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.875rem}.toast-message{flex:1;font-size:.875rem;line-height:1.4}.toast-dismiss{flex-shrink:0;width:1.5rem;height:1.5rem;display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:inherit;font-size:1.25rem;font-weight:700;cursor:pointer;opacity:.7;border-radius:4px;-webkit-tap-highlight-color:transparent}.toast-dismiss:hover,.toast-dismiss:active{opacity:1;background-color:#ffffff1a}.toast-exit{animation:toast-exit .3s ease-in forwards}@keyframes toast-enter{0%{opacity:0;transform:translateY(1rem)}to{opacity:1;transform:translateY(0)}}@keyframes toast-exit{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(1rem)}}@media(prefers-reduced-motion:reduce){.btn,.todo-item,.filter-btn,.sort-order-btn{transition:none}.btn:active:not(:disabled),.filter-btn:active,.sort-order-btn:active{transform:none}.spinner{animation:none;border-color:currentColor;border-right-color:currentColor;opacity:.7}.todo-item-optimistic:after{animation:none;background:#646cff;opacity:.5}.toast{animation:none}.toast-exit{animation:none;opacity:0}}