/* =====================================================================
   TaskBoard — Vista Kanban (listas y tarjetas) + Drag & Drop
   ===================================================================== */

.kanban {
    flex: 1;
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-5);
    overflow-x: auto;
    overflow-y: hidden;
    height: 100%;
}

.kanban-list {
    width: var(--list-width);
    min-width: var(--list-width);
    background: var(--bg-surface-alt);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    max-height: 100%;
    border: 1px solid var(--border-color);
}

.kanban-list-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 12px 8px;
    flex-shrink: 0;
    cursor: grab;
}
.kanban-list-header:active { cursor: grabbing; }
.kanban-list-title-wrap { display: flex; align-items: center; gap: 8px; min-width: 0; }
.kanban-list-title {
    font-size: 13.5px; font-weight: 700;
    background: transparent; border: none;
    padding: 3px 6px; border-radius: var(--radius-sm);
    max-width: 160px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.kanban-list-title:hover, .kanban-list-title:focus { background: var(--bg-hover); outline: none; }
.kanban-list-count {
    font-size: 11px; font-weight: 700; color: var(--text-muted);
    background: var(--bg-hover); border-radius: var(--radius-full);
    padding: 1px 7px;
}
.kanban-list-done-flag { color: var(--color-success); }

.kanban-cards {
    flex: 1;
    overflow-y: auto;
    padding: 4px 10px 8px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 40px;
}

.kanban-list-footer { padding: 8px 10px 12px; flex-shrink: 0; }
.add-card-btn {
    width: 100%; text-align: left;
    background: none; border: none;
    color: var(--text-muted);
    font-size: 13px; font-weight: 600;
    padding: 8px 8px;
    border-radius: var(--radius-sm);
    display: flex; align-items: center; gap: 6px;
}
.add-card-btn:hover { background: var(--bg-hover); color: var(--text-primary); }

.add-list-btn {
    width: var(--list-width);
    min-width: var(--list-width);
    height: 44px;
    border-radius: var(--radius-md);
    border: 2px dashed var(--border-color-strong);
    background: transparent;
    color: var(--text-muted);
    font-weight: 700;
    font-size: 13px;
    display: flex; align-items: center; justify-content: center; gap: 8px;
    flex-shrink: 0;
}
.add-list-btn:hover { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-primary-light); }

/* ---------- Tarjeta (card) ---------- */
.kanban-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 11px;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
    position: relative;
}
.kanban-card:hover { border-color: var(--border-color-strong); box-shadow: var(--shadow-md); }
.kanban-card.selected { outline: 2px solid var(--color-primary); outline-offset: -1px; background: var(--color-primary-light); }
.kanban-card.dragging { opacity: 0.4; }
.kanban-card.urgent-flag { border-left: 3px solid var(--priority-urgent); }

.card-labels { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 6px; }
.card-label-pill { height: 7px; width: 30px; border-radius: var(--radius-full); }

.kanban-card-title { font-size: 13.5px; font-weight: 600; margin-bottom: 8px; word-break: break-word; }

.kanban-card-meta { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.kanban-card-meta-left { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.card-meta-chip {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 11px; font-weight: 600; color: var(--text-muted);
}
.card-meta-chip svg { width: 13px; height: 13px; }
.card-due.overdue { color: var(--color-danger); }
.card-due.due-soon { color: var(--color-warning); }

.card-select-checkbox {
    position: absolute; top: 8px; left: 8px;
    opacity: 0; transition: opacity var(--transition-fast);
    accent-color: var(--color-primary);
}
.kanban-card:hover .card-select-checkbox,
.kanban-card.selected .card-select-checkbox,
body.selection-mode .card-select-checkbox { opacity: 1; }
body.selection-mode .kanban-card { padding-left: 30px; }

/* Drop zones (drag & drop) */
.kanban-cards.drag-over { background: var(--color-primary-light); border-radius: var(--radius-sm); }
.card-drop-indicator {
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
    margin: 2px 0;
}
.kanban-list.dragging-list { opacity: 0.5; }

/* ---------- Filtros / barra secundaria ---------- */
.filters-bar {
    display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
    padding: 10px 20px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-surface);
}
.filter-pill {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 10px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
    font-size: 12.5px; font-weight: 600;
    color: var(--text-secondary);
}
.filter-pill:hover { border-color: var(--border-color-strong); color: var(--text-primary); }
.filter-pill.active { background: var(--color-primary-light); border-color: var(--color-primary); color: var(--color-primary); }
.filter-pill .count { background: var(--bg-hover); border-radius: var(--radius-full); padding: 0 6px; font-size: 11px; }

.selection-bar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 20px;
    background: var(--color-primary-light);
    border-bottom: 1px solid var(--border-color);
    gap: 12px; flex-wrap: wrap;
}
.selection-bar strong { color: var(--color-primary); }
.selection-actions { display: flex; gap: 8px; flex-wrap: wrap; }