:root{--color-primary: #4338ca;--color-primary-hover: #3730a3;--color-primary-soft: #eef2ff;--color-bg: #f8fafc;--color-surface: #ffffff;--color-border: #e2e8f0;--color-text: #0f172a;--color-text-muted: #64748b;--color-status-todo: #64748b;--color-status-todo-bg: #f1f5f9;--color-status-progress: #2563eb;--color-status-progress-bg: #eff6ff;--color-status-done: #16a34a;--color-status-done-bg: #f0fdf4;--color-priority-low: #64748b;--color-priority-low-bg: #f1f5f9;--color-priority-medium: #b45309;--color-priority-medium-bg: #fffbeb;--color-priority-high: #dc2626;--color-priority-high-bg: #fef2f2;--color-due: #4338ca;--color-due-bg: #eef2ff;--color-due-empty: #64748b;--color-due-empty-bg: #f1f5f9;--color-danger: #dc2626;--color-danger-hover: #b91c1c;--color-success-bg: #f0fdf4;--color-success-border: #bbf7d0;--color-success-text: #15803d;--color-error-bg: #fef2f2;--color-error-border: #fecaca;--color-error-text: #b91c1c;--radius-sm: 8px;--radius-md: 10px;--radius-lg: 12px;--radius-pill: 999px;--space-1: 8px;--space-2: 16px;--space-3: 24px;--space-4: 32px;--shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .08)}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--color-bg);color:var(--color-text);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}.app{max-width:960px;margin:0 auto;padding:var(--space-2);display:flex;flex-direction:column;gap:var(--space-2)}.app__header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:var(--space-1)}.app__brand{display:flex;align-items:center;gap:var(--space-1)}.app__logo{width:40px;height:40px;border-radius:var(--radius-md);background:var(--color-primary);color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0}.app__title{font-size:1.25rem;font-weight:700;margin:0;letter-spacing:-.01em}.app__subtitle{margin:0;font-size:.85rem;color:var(--color-text-muted)}.summary{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-1)}.summary__item{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:var(--space-2);display:flex;flex-direction:column;gap:4px}.summary__value{font-size:1.5rem;font-weight:700;color:var(--color-primary)}.summary__label{font-size:.85rem;color:var(--color-text-muted)}.controls{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:var(--space-2)}.controls__row{display:grid;grid-template-columns:1fr;gap:var(--space-2)}.control{display:flex;flex-direction:column;gap:4px;min-width:0}.control__label{font-size:.85rem;font-weight:500;color:var(--color-text-muted)}.control__input,.control__select{width:100%;padding:var(--space-1) 12px;border:1px solid var(--color-border);border-radius:var(--radius-sm);font:inherit;background:var(--color-surface);color:var(--color-text);transition:border-color .15s ease,box-shadow .15s ease}.control__select{padding-right:28px}.control__input::placeholder{color:var(--color-text-muted)}.control__input:focus,.control__select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-soft)}.control__input--error{border-color:var(--color-danger)}.control__textarea{resize:vertical;min-height:80px}.control__hint{margin:0;font-size:.8rem;color:var(--color-text-muted)}.control__search-wrap{position:relative;display:flex;align-items:center}.control__search-icon{position:absolute;left:12px;color:var(--color-text-muted);pointer-events:none}.control__search-wrap .control__input{padding-left:36px}.control__sort-group{display:flex;gap:var(--space-1)}.control__sort-group .control__select{flex:1}.control--actions{flex-direction:row;flex-wrap:wrap;gap:var(--space-1)}.control--actions .btn{flex:1;min-width:140px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:var(--space-1) var(--space-2);border-radius:var(--radius-sm);border:1px solid transparent;font:inherit;font-weight:500;cursor:pointer;white-space:nowrap;transition:background-color .15s ease,border-color .15s ease}.btn:disabled{opacity:.5;cursor:not-allowed}.btn--primary{background:var(--color-primary);color:#fff}.btn--primary:hover:not(:disabled){background:var(--color-primary-hover)}.btn--secondary{background:var(--color-surface);border-color:var(--color-border);color:var(--color-text)}.btn--secondary:hover:not(:disabled){background:#f1f5f9}.btn--danger{background:var(--color-danger);color:#fff}.btn--danger:hover:not(:disabled){background:var(--color-danger-hover)}.btn--icon{background:var(--color-surface);border-color:var(--color-border);min-width:42px;padding:var(--space-1) 10px;color:var(--color-text)}.btn--icon:hover{background:#f1f5f9}.btn--danger-quiet{color:var(--color-danger);border-color:var(--color-border);background:var(--color-surface)}.btn--danger-quiet:hover:not(:disabled){background:var(--color-priority-high-bg);border-color:var(--color-error-border);color:var(--color-danger-hover)}.btn__icon{display:inline-flex;flex-shrink:0}.message{display:flex;align-items:center;justify-content:space-between;gap:var(--space-1);padding:12px var(--space-2);border-radius:var(--radius-md);border:1px solid}.message--success{background:var(--color-success-bg);border-color:var(--color-success-border);color:var(--color-success-text)}.message--error{background:var(--color-error-bg);border-color:var(--color-error-border);color:var(--color-error-text)}.message__close{background:none;border:none;cursor:pointer;color:inherit;padding:4px;display:inline-flex;border-radius:var(--radius-sm)}.message__close:hover{background:#0f172a0f}.app__main{min-height:120px}.task-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr;gap:var(--space-2)}.task-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:var(--space-2);display:flex;flex-direction:column;gap:var(--space-1)}.task-card__main{display:flex;flex-direction:column;gap:6px;min-width:0}.task-card__title{margin:0;font-size:1.05rem;font-weight:600;overflow-wrap:anywhere}.task-card--done .task-card__title{text-decoration:line-through;color:var(--color-text-muted)}.task-card__badges{display:flex;flex-wrap:wrap;gap:6px}.badge{display:inline-block;padding:2px 10px;border-radius:var(--radius-pill);font-size:.78rem;font-weight:500;border:1px solid transparent;white-space:nowrap}.badge--status--todo{background:var(--color-status-todo-bg);color:var(--color-status-todo);border-color:var(--color-border)}.badge--status--in_progress{background:var(--color-status-progress-bg);color:var(--color-status-progress);border-color:#bfdbfe}.badge--status--done{background:var(--color-status-done-bg);color:var(--color-status-done);border-color:#bbf7d0}.badge--priority--low{background:var(--color-priority-low-bg);color:var(--color-priority-low);border-color:var(--color-border)}.badge--priority--medium{background:var(--color-priority-medium-bg);color:var(--color-priority-medium);border-color:#fde68a}.badge--priority--high{background:var(--color-priority-high-bg);color:var(--color-priority-high);border-color:#fecaca}.badge--due{background:var(--color-due-bg);color:var(--color-due);border-color:#c7d2fe}.badge--due-empty{background:var(--color-due-empty-bg);color:var(--color-due-empty);border-color:var(--color-border)}.task-card__description{margin:0;color:var(--color-text);white-space:pre-wrap;overflow-wrap:anywhere}.task-card__meta{margin:0;font-size:.8rem;color:var(--color-text-muted)}.task-card__actions{display:flex;flex-wrap:wrap;gap:var(--space-1)}.task-card__actions .btn{flex:1;min-width:120px}.empty-state,.loading-state{background:var(--color-surface);border:1px dashed var(--color-border);border-radius:var(--radius-lg);padding:var(--space-4) var(--space-2);text-align:center;color:var(--color-text-muted);display:flex;flex-direction:column;align-items:center;gap:var(--space-1)}.empty-state__icon{color:var(--color-text-muted);opacity:.7}.empty-state__title{margin:0;font-size:1.05rem;font-weight:600;color:var(--color-text)}.empty-state__hint{margin:0}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a73;display:flex;align-items:flex-start;justify-content:center;padding:var(--space-2);overflow-y:auto;z-index:100}.modal{background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:0 10px 30px #0f172a33;width:100%;max-width:520px;margin-top:5vh;padding:var(--space-3)}.modal--small{max-width:420px}.modal__title{margin:0 0 var(--space-2);font-size:1.2rem;font-weight:700}.modal__message{margin:0 0 var(--space-2)}.modal__actions{display:flex;flex-wrap:wrap;gap:var(--space-1);margin-top:var(--space-2)}.modal__actions .btn{flex:1;min-width:120px}.task-form{display:flex;flex-direction:column;gap:var(--space-2)}.task-form__field{display:flex;flex-direction:column;gap:4px}.field-error{margin:0;font-size:.85rem;color:var(--color-danger)}.required-mark{color:var(--color-danger)}@media(min-width:600px){.app{padding:var(--space-3)}.app__title{font-size:1.4rem}.controls__row{grid-template-columns:repeat(2,1fr)}.control--actions{grid-column:1 / -1;justify-content:flex-end}.control--actions .btn{flex:0 0 auto;min-width:0}.task-card{flex-direction:row;align-items:flex-start;justify-content:space-between}.task-card__actions{flex-direction:column;flex-shrink:0}.task-card__actions .btn{min-width:148px}}@media(min-width:900px){.controls__row{grid-template-columns:minmax(190px,1fr) minmax(168px,auto) minmax(172px,auto) minmax(190px,auto);align-items:end;gap:var(--space-1)}.control--actions{grid-column:1 / -1;flex-direction:row;justify-content:flex-end}.control--actions .btn{flex:0 0 auto;min-width:0}}