/* ==========================================================================
   Kanban Board Styles
   ========================================================================== */

.kanban-board {
    display: flex;
    gap: 16px;
    padding: 20px;
    height: 100%;
    overflow-x: auto;
    background-color: var(--bg-secondary);
}

.kanban-column {
    flex: 1;
    min-width: 280px;
    max-width: 400px;
    background-color: var(--bg-tertiary);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.kanban-column-header {
    padding: 12px 16px;
    background-color: var(--bg-primary);
    border-bottom: 2px solid var(--border-color);
    border-radius: 8px 8px 0 0;
}

.kanban-column-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.kanban-column-icon {
    font-size: 18px;
}

.kanban-column-label {
    flex: 1;
}

.kanban-column-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 20px;
    padding: 0 6px;
    background-color: var(--bg-tertiary);
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
}

.kanban-column-points {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
}

.kanban-column-content {
    flex: 1;
    padding: 12px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-height: 100px;
}

.kanban-column-content.drag-over {
    background-color: rgba(37, 99, 235, 0.05);
    border: 2px dashed var(--primary-color);
    border-radius: 4px;
}

.kanban-empty {
    padding: 40px 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}

/* Kanban Card */
.kanban-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    cursor: move;
    transition: all 0.2s;
    box-shadow: var(--shadow-sm);
}

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

.kanban-card.dragging {
    opacity: 0.4;
    transform: rotate(2deg);
}

.kanban-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
}

.kanban-card-title {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
}

.kanban-card-type {
    padding: 2px 6px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: 4px;
    white-space: nowrap;
}

.kanban-card-type.type-epic {
    background-color: #dbeafe;
    color: #1e40af;
}

.kanban-card-type.type-story {
    background-color: #dcfce7;
    color: #166534;
}

.kanban-card-type.type-task {
    background-color: #e0e7ff;
    color: #4338ca;
}

.kanban-card-type.type-bug {
    background-color: #fee2e2;
    color: #991b1b;
}

.kanban-card-description {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.kanban-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.kanban-card-points {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    background-color: var(--bg-secondary);
    border-radius: 4px;
    font-weight: 600;
    color: var(--primary-color);
}

.kanban-card-assignee {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    border: 2px solid var(--bg-primary);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.kanban-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border-color);
}

.kanban-card-priority {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 500;
}

.priority-high {
    color: var(--danger-color);
}

.priority-medium {
    color: var(--warning-color);
}

.priority-low {
    color: var(--text-muted);
}

.kanban-card-tags {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.kanban-card-tag {
    padding: 2px 6px;
    background-color: var(--bg-secondary);
    border-radius: 3px;
    font-size: 10px;
    color: var(--text-secondary);
}

/* Progress indicator */
.kanban-card-progress {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
}

.progress-bar-container {
    flex: 1;
    height: 6px;
    background-color: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    transition: width 0.3s, background-color 0.3s;
    border-radius: 3px;
}

.progress-text {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 35px;
    text-align: right;
}

/* Column specific colors */
.kanban-column[data-status="todo"] .kanban-column-header {
    border-bottom-color: #94a3b8;
}

.kanban-column[data-status="in_progress"] .kanban-column-header {
    border-bottom-color: #3b82f6;
}

.kanban-column[data-status="review"] .kanban-column-header {
    border-bottom-color: #f59e0b;
}

.kanban-column[data-status="done"] .kanban-column-header {
    border-bottom-color: #10b981;
}

.kanban-card-date {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 3px;
    background-color: var(--bg-secondary);
}

.kanban-card-date.overdue {
    background-color: #fee2e2;
    color: #dc2626;
    font-weight: 600;
}

.kanban-card-date.today {
    background-color: #fef3c7;
    color: #d97706;
    font-weight: 600;
}

.kanban-card-date.urgent {
    background-color: #ffedd5;
    color: #ea580c;
    font-weight: 600;
}

/* WIP Limit Warning */
.wip-limit-warning {
    background-color: #fef3c7;
    border: 1px solid #fbbf24;
    color: #92400e;
    padding: 8px 12px;
    margin: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.wip-limit-exceeded {
    background-color: #fee2e2;
    border-color: #ef4444;
    color: #991b1b;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
    .kanban-column {
        min-width: 240px;
    }
}

@media (max-width: 768px) {
    .kanban-board {
        flex-direction: column;
        padding: 12px;
    }

    .kanban-column {
        min-width: 100%;
        max-width: none;
        max-height: 400px;
    }
}