.filter-bar{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);margin-bottom:var(--spacing-lg)}.filter-bar__top{display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-md);margin-bottom:var(--spacing-md);flex-wrap:wrap}.filter-bar__controls{display:flex;flex-direction:column;gap:var(--spacing-md)}.search-bar{width:100%}.search-bar__input-wrapper{position:relative;display:flex;align-items:center}.search-bar__icon{position:absolute;left:12px;color:var(--color-text-secondary);pointer-events:none}.search-bar__input{width:100%;padding:var(--spacing-sm) 2.75rem var(--spacing-sm) 2.75rem;border:2px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--font-size-base);background:var(--color-bg);color:var(--color-text);transition:border-color .2s;min-height:var(--touch-target-min)}.search-bar__input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb1a}.search-bar__clear{position:absolute;right:8px;padding:var(--spacing-sm);background:transparent;border:none;color:var(--color-text-secondary);cursor:pointer;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;min-width:var(--touch-target-min);min-height:var(--touch-target-min);transition:background-color .2s,color .2s}.search-bar__clear:hover{background:var(--color-bg-secondary);color:var(--color-text)}.search-bar__clear:focus{outline:2px solid var(--color-primary);outline-offset:2px}.status-filter{width:100%}.status-filter__buttons{display:flex;gap:var(--spacing-sm);flex-wrap:wrap}.status-filter__button{flex:1;min-width:100px;padding:var(--spacing-sm) var(--spacing-md);border:2px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg);color:var(--color-text);font-size:var(--font-size-sm);font-weight:600;cursor:pointer;transition:all .2s;min-height:var(--touch-target-min)}.status-filter__button:hover{background:var(--color-bg-secondary);border-color:var(--color-primary)}.status-filter__button:focus{outline:2px solid var(--color-primary);outline-offset:2px}.status-filter__button--active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.status-filter__button--active:hover{background:var(--color-primary-hover);border-color:var(--color-primary-hover)}.sort-controls{display:flex;align-items:center;gap:var(--spacing-sm);width:100%}.sort-controls__label{font-size:var(--font-size-sm);font-weight:600;color:var(--color-text);white-space:nowrap}.sort-controls__select{flex:1;padding:var(--spacing-sm) var(--spacing-md);border:2px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg);color:var(--color-text);font-size:var(--font-size-sm);cursor:pointer;transition:border-color .2s;min-height:var(--touch-target-min)}.sort-controls__select:hover{border-color:var(--color-primary)}.sort-controls__select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb1a}.task-counter{display:flex;gap:var(--spacing-md);flex-wrap:wrap}.task-counter__item{display:flex;align-items:center;gap:var(--spacing-sm)}.task-counter__label{font-size:var(--font-size-sm);color:var(--color-text-secondary)}.task-counter__value{font-size:var(--font-size-lg);font-weight:600;color:var(--color-text)}.clear-filters-button{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);border:2px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg);color:var(--color-text);font-size:var(--font-size-sm);font-weight:600;cursor:pointer;transition:all .2s;min-height:var(--touch-target-min);white-space:nowrap}.clear-filters-button:hover{background:var(--color-bg-secondary);border-color:var(--color-primary)}.clear-filters-button:focus{outline:2px solid var(--color-primary);outline-offset:2px}.empty-state-button{margin-top:var(--spacing-md);padding:var(--spacing-sm) var(--spacing-lg);border:2px solid var(--color-primary);border-radius:var(--radius-md);background:var(--color-primary);color:#fff;font-size:var(--font-size-sm);font-weight:600;cursor:pointer;transition:all .2s;min-height:var(--touch-target-min)}.empty-state-button:hover{background:var(--color-primary-hover);border-color:var(--color-primary-hover)}.empty-state-button:focus{outline:2px solid var(--color-primary);outline-offset:2px}@media(min-width:768px){.filter-bar{padding:var(--spacing-xl)}.filter-bar__controls{flex-direction:row;align-items:flex-start;gap:var(--spacing-md)}.filter-bar__filters{display:flex;gap:var(--spacing-md);flex:1}.search-bar{flex:2;min-width:300px}.status-filter{flex:1;min-width:300px}.sort-controls{flex:1;min-width:200px}.task-counter{gap:var(--spacing-lg)}}@media(prefers-contrast:high){.search-bar__input,.status-filter__button,.sort-controls__select,.clear-filters-button,.status-filter__button--active{border-width:3px}}@media(prefers-reduced-motion:reduce){.search-bar__input,.status-filter__button,.sort-controls__select,.clear-filters-button,.empty-state-button{transition:none}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-secondary: #64748b;--color-success: #16a34a;--color-error: #dc2626;--color-warning: #d97706;--color-bg: #ffffff;--color-bg-secondary: #f8fafc;--color-text: #0f172a;--color-text-secondary: #475569;--color-border: #e2e8f0;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", sans-serif;--font-size-base: 16px;--font-size-sm: 14px;--font-size-lg: 18px;--font-size-xl: 24px;--line-height: 1.5;--touch-target-min: 44px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1)}html{font-size:var(--font-size-base);line-height:var(--line-height)}body{font-family:var(--font-family);color:var(--color-text);background-color:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*:focus-visible{outline:3px solid var(--color-primary);outline-offset:2px}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{background-color:var(--color-primary);color:#fff;padding:var(--spacing-lg);display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-md);flex-wrap:wrap}.app-title{font-size:var(--font-size-xl);font-weight:700;margin:0}.app-main{flex:1;max-width:1200px;width:100%;margin:0 auto;padding:var(--spacing-lg)}.alert{padding:var(--spacing-md);border-radius:var(--radius-md);margin-bottom:var(--spacing-lg)}.alert-warning{background-color:#fef3c7;color:#92400e;border:1px solid var(--color-warning)}.button{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-lg);min-height:var(--touch-target-min);min-width:var(--touch-target-min);font-size:var(--font-size-base);font-weight:600;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all .2s}.button:hover{transform:translateY(-1px);box-shadow:var(--shadow-md)}.button:active{transform:translateY(0)}.button-primary{background-color:var(--color-primary);color:#fff}.button-primary:hover{background-color:var(--color-primary-hover)}.button-secondary{background-color:var(--color-bg-secondary);color:var(--color-text);border:1px solid var(--color-border)}.button-secondary:hover{background-color:var(--color-border)}.button-danger{background-color:var(--color-error);color:#fff}.button-danger:hover{background-color:#b91c1c}.button-icon{padding:var(--spacing-sm)}.empty-state{text-align:center;padding:var(--spacing-xl);color:var(--color-text-secondary)}.empty-state-icon{font-size:64px;margin-bottom:var(--spacing-md)}.empty-state-title{font-size:var(--font-size-lg);margin-bottom:var(--spacing-sm);color:var(--color-text)}.dialog-overlay{position:fixed;inset:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;padding:var(--spacing-lg);z-index:1000}.dialog{background-color:var(--color-bg);border-radius:var(--radius-lg);padding:var(--spacing-xl);max-width:500px;width:100%;box-shadow:var(--shadow-lg)}.dialog-title{font-size:var(--font-size-lg);margin-bottom:var(--spacing-md)}.dialog-message{color:var(--color-text-secondary);margin-bottom:var(--spacing-lg)}.dialog-actions{display:flex;gap:var(--spacing-md);justify-content:flex-end}.task-form{background-color:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-xl);margin-bottom:var(--spacing-lg)}.task-form-title{font-size:var(--font-size-lg);margin-bottom:var(--spacing-lg)}.form-field{margin-bottom:var(--spacing-lg)}.form-label{display:block;font-weight:600;margin-bottom:var(--spacing-sm);color:var(--color-text)}.form-input,.form-textarea{width:100%;padding:var(--spacing-sm) var(--spacing-md);font-size:var(--font-size-base);font-family:inherit;border:1px solid var(--color-border);border-radius:var(--radius-md);transition:border-color .2s}.form-input:hover,.form-textarea:hover{border-color:var(--color-secondary)}.form-input:focus,.form-textarea:focus{border-color:var(--color-primary)}.form-input-error{border-color:var(--color-error)}.form-error{color:var(--color-error);font-size:var(--font-size-sm);margin-top:var(--spacing-xs)}.form-actions{display:flex;gap:var(--spacing-md);justify-content:flex-end}.task-list{display:flex;flex-direction:column;gap:var(--spacing-md)}.task-item{background-color:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);transition:box-shadow .2s}.task-item:hover{box-shadow:var(--shadow-md)}.task-item-completed{opacity:.7}.task-item-header{display:flex;align-items:flex-start;gap:var(--spacing-md);margin-bottom:var(--spacing-sm)}.task-checkbox-label{display:flex;align-items:center;cursor:pointer;min-width:var(--touch-target-min);min-height:var(--touch-target-min)}.task-checkbox{position:absolute;opacity:0;width:0;height:0}.task-checkbox-custom{display:flex;align-items:center;justify-content:center;width:24px;height:24px;border:2px solid var(--color-border);border-radius:var(--radius-sm);background-color:var(--color-bg);transition:all .2s}.task-checkbox:checked+.task-checkbox-custom{background-color:var(--color-success);border-color:var(--color-success);color:#fff}.task-checkbox:focus-within+.task-checkbox-custom{border-color:var(--color-text-secondary)}.task-title{flex:1;font-size:var(--font-size-lg);font-weight:600;word-break:break-word}.task-item-completed .task-title{text-decoration:line-through}.task-description{color:var(--color-text-secondary);margin-bottom:var(--spacing-md);white-space:pre-wrap;word-break:break-word}.task-meta{display:flex;gap:var(--spacing-md);align-items:center;flex-wrap:wrap;margin-bottom:var(--spacing-md);font-size:var(--font-size-sm);color:var(--color-text-secondary)}.task-status-badge{display:inline-flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-sm);font-weight:600}.task-status-completed{background-color:#dcfce7;color:#166534}.task-status-pending{background-color:#fef3c7;color:#92400e}.task-actions{display:flex;gap:var(--spacing-sm)}.button-edit,.button-delete{font-size:var(--font-size-sm)}.button-edit{background-color:var(--color-bg-secondary);color:var(--color-text);border:1px solid var(--color-border)}.button-delete{background-color:#fee2e2;color:var(--color-error);border:1px solid var(--color-error)}.toast-container{position:fixed;bottom:var(--spacing-lg);right:var(--spacing-lg);display:flex;flex-direction:column;gap:var(--spacing-sm);z-index:1000}.toast{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);min-width:300px;animation:slideIn .3s ease-out}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.toast-success{background-color:#dcfce7;color:#166534;border:1px solid var(--color-success)}.toast-error{background-color:#fee2e2;color:#991b1b;border:1px solid var(--color-error)}.toast-info{background-color:#dbeafe;color:#1e40af;border:1px solid var(--color-primary)}.toast-message{flex:1}.toast-close{background:none;border:none;font-size:var(--font-size-lg);cursor:pointer;padding:var(--spacing-xs);min-width:var(--touch-target-min);min-height:var(--touch-target-min);display:flex;align-items:center;justify-content:center}@media(min-width:768px){.app-main{padding:var(--spacing-xl)}.task-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:var(--spacing-lg)}.task-item{height:100%}}@media(max-width:320px){.app-header{flex-direction:column;align-items:stretch}.button{width:100%}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.error-boundary{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:var(--spacing-xl);background-color:var(--color-bg-secondary)}.error-boundary-content{max-width:600px;background-color:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-xl);text-align:center}.error-boundary-title{font-size:var(--font-size-xl);color:var(--color-error);margin-bottom:var(--spacing-md)}.error-boundary-message{color:var(--color-text-secondary);margin-bottom:var(--spacing-lg)}.error-boundary-details{text-align:left;margin-bottom:var(--spacing-lg);padding:var(--spacing-md);background-color:var(--color-bg-secondary);border-radius:var(--radius-md)}.error-boundary-stack{font-size:var(--font-size-sm);color:var(--color-text-secondary);overflow-x:auto;white-space:pre-wrap;word-break:break-word}