/* Activities */
.activities-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

/* Kanban Board */
.kanban-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    height: calc(100vh - 220px);
}

.kanban-column {
    background: var(--color-gray-50);
    border-radius: var(--border-radius-lg);
    display: flex;
    flex-direction: column;
    transition: background var(--transition-fast);
}

.kanban-column.drag-over {
    background: rgba(37, 99, 235, 0.08);
}

.kanban-column-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-600);
    background: var(--color-white);
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.kanban-column-icon {
    font-size: var(--font-size-lg);
}

.kanban-column-count {
    margin-left: auto;
    background: var(--color-gray-200);
    color: var(--color-gray-600);
    padding: 2px 8px;
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-xs);
}

.kanban-column-body {
    flex: 1;
    padding: var(--spacing-sm);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.kanban-empty {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-gray-400);
    font-size: var(--font-size-sm);
}

/* Kanban Card */
.kanban-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    border: 1px solid var(--color-gray-200);
    cursor: grab;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.kanban-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.kanban-card:active {
    cursor: grabbing;
}

.kanban-card.dragging {
    opacity: 0.5;
    transform: rotate(3deg);
}

.kanban-card-priority {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.kanban-card-header {
    display: flex;
    justify-content: flex-end;
    padding-top: var(--spacing-xs);
}

.kanban-card-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.kanban-card-title {
    font-weight: 500;
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
}

.kanban-card-desc {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.kanban-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-xs);
    color: var(--color-gray-400);
}

.kanban-card-assignee {
    background: var(--color-gray-100);
    padding: 2px 8px;
    border-radius: var(--border-radius-full);
    color: var(--color-gray-600);
}

.kanban-card-due.overdue {
    color: var(--color-danger);
    font-weight: 500;
}

/* Detail Panel */
.detail-panel-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: var(--z-modal);
    animation: fadeIn 0.2s ease;
}

.detail-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 480px;
    height: 100vh;
    background: var(--color-white);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
    z-index: calc(var(--z-modal) + 1);
    display: flex;
    flex-direction: column;
    animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}

.detail-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
}

.detail-panel-header h3 {
    font-size: var(--font-size-lg);
}

.detail-panel-body {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
}

.detail-panel-footer {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

/* Responsive */
@media (max-width: 1024px) {
    .kanban-board {
        grid-template-columns: 1fr;
        height: auto;
    }
    
    .detail-panel {
        width: 100%;
    }
}

/* Filtros */
.activities-filters {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.filter-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.filter-select {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
}

.search-input {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-md);
}

/* Activity List */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.activity-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.activity-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.activity-info {
    flex: 1;
}

.activity-title {
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.activity-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.activity-priority {
    width: 4px;
    height: 40px;
    border-radius: var(--border-radius-full);
    flex-shrink: 0;
}

.activity-priority.critical { background: #dc2626; }
.activity-priority.high { background: #f97316; }
.activity-priority.medium { background: #eab308; }
.activity-priority.low { background: #94a3b8; }

.activity-due {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    min-width: 80px;
    text-align: right;
}

.activity-due.overdue {
    color: var(--color-danger);
    font-weight: 500;
}

/* Bulk Actions */
.bulk-actions {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-primary);
    border-radius: var(--border-radius-lg);
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    align-items: center;
}

.bulk-actions .btn {
    color: var(--color-white);
    border: 1px solid rgba(255,255,255,0.3);
}

.bulk-count {
    margin-right: auto;
}

/* Detail Panel */
.detail-description-box {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    line-height: 1.8;
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
    max-height: 300px;
    overflow-y: auto;
    white-space: pre-wrap;
}

.detail-meta-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-100);
}

.detail-meta-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.detail-meta-label {
    font-size: var(--font-size-xs);
    color: var(--color-gray-400);
}

.detail-meta-value {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}