/* ========== SPRINT CARDS - Backlog items, sprint tasks, story points ========== */

/* ========== BACKLOG ITEM ========== */
.backlog-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition:
    transform 0.1s var(--ease-snap),
    box-shadow 0.1s var(--ease-step-out),
    border-color 0.1s var(--ease-step-out);
  position: relative;
}

.backlog-item:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
  transform: translateX(2px);
}

.backlog-item.dragging {
  opacity: 0.5;
  transform: rotate(2deg);
  box-shadow: var(--shadow-lg);
}

/* Priority indicator */
.backlog-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  opacity: 0;
}

.backlog-item--priority-high::before {
  background: var(--status-error);
  opacity: 1;
}

.backlog-item--priority-medium::before {
  background: var(--status-warning);
  opacity: 1;
}

.backlog-item--priority-low::before {
  background: var(--status-info);
  opacity: 1;
}

/* Drag handle */
.backlog-item__drag {
  color: var(--text-muted);
  opacity: 0.5;
  cursor: grab;
  flex-shrink: 0;
}

.backlog-item__drag:hover {
  opacity: 1;
}

/* Item content */
.backlog-item__content {
  flex: 1;
  min-width: 0;
}

.backlog-item__name {
  font-size: var(--font-sm);
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.backlog-item__meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: 2px;
}

.backlog-item__category {
  font-size: 10px;
  color: var(--text-muted);
}

.backlog-item__assignee {
  font-size: 10px;
  color: var(--text-secondary);
}

/* Story points badge */
.points-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  padding: 0 var(--spacing-xs);
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.points-badge--unestimated {
  color: var(--text-muted);
  background: transparent;
  border-style: dashed;
}

.points-badge--small {
  background: var(--status-success-subtle);
  border-color: var(--status-success);
  color: var(--status-success);
}

.points-badge--medium {
  background: var(--status-warning-subtle);
  border-color: var(--status-warning);
  color: var(--status-warning);
}

.points-badge--large {
  background: var(--status-error-subtle);
  border-color: var(--status-error);
  color: var(--status-error);
}

/* ========== SPRINT TASK CARD ========== */
.sprint-task {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition:
    transform 0.1s var(--ease-snap),
    box-shadow 0.1s var(--ease-step-out),
    border-color 0.1s var(--ease-step-out);
  position: relative;
}

.sprint-task:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.sprint-task.dragging {
  opacity: 0.5;
  transform: rotate(2deg);
  box-shadow: var(--shadow-lg);
}

/* Priority indicator */
.sprint-task::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
  opacity: 0;
}

.sprint-task--priority-high::before {
  background: var(--status-error);
  opacity: 1;
}

.sprint-task--priority-medium::before {
  background: var(--status-warning);
  opacity: 1;
}

.sprint-task--priority-low::before {
  background: var(--status-info);
  opacity: 1;
}

/* Drag handle */
.sprint-task__drag {
  color: var(--text-muted);
  opacity: 0.5;
  cursor: grab;
  flex-shrink: 0;
}

.sprint-task__drag:hover {
  opacity: 1;
}

/* Task content */
.sprint-task__content {
  flex: 1;
  min-width: 0;
}

.sprint-task__header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.sprint-task__name {
  font-size: var(--font-md);
  font-weight: 500;
  color: var(--text-primary);
  flex: 1;
}

.sprint-task__category {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 2px var(--spacing-sm);
  font-size: var(--font-xs);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  flex-shrink: 0;
}

.sprint-task__category-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.sprint-task__meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.sprint-task__assignee {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-xs);
  color: var(--text-secondary);
}

.sprint-task__avatar {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-subtle);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
}

/* Kanban status chip */
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 2px var(--spacing-sm);
  font-size: 10px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.status-chip--backlog {
  background: var(--bg-tertiary);
  color: var(--text-muted);
}

.status-chip--todo {
  background: var(--accent-subtle);
  color: var(--accent);
}

.status-chip--in-progress {
  background: var(--status-warning-subtle);
  color: var(--status-warning);
}

.status-chip--done {
  background: var(--status-success-subtle);
  color: var(--status-success);
}

/* ========== POINTS SELECTOR ========== */
.points-selector {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

.points-btn {
  width: 36px;
  height: 36px;
  padding: 0;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--font-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.points-btn:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
  color: var(--text-primary);
}

.points-btn--selected {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg-primary);
}

.points-btn--selected:hover {
  background: var(--accent-bright);
  border-color: var(--accent-bright);
}

/* ========== DROP ZONES ========== */
.backlog-list.drag-over {
  background: var(--accent-subtle);
  border-radius: var(--radius-md);
}

.sprint-tasks.drag-over {
  background: var(--accent-subtle);
  border-radius: var(--radius-md);
  min-height: 60px;
}

.drop-placeholder {
  height: 40px;
  border: 2px dashed var(--accent);
  border-radius: var(--radius-md);
  background: var(--accent-subtle);
  margin: var(--spacing-xs) 0;
}

/* ========== TASK ACTIONS (edit mode) ========== */
.task-actions {
  display: none;
  gap: 2px;
  flex-shrink: 0;
}

.edit-mode .backlog-item:hover .task-actions,
.edit-mode .sprint-task:hover .task-actions {
  display: flex;
}

.task-action {
  width: 24px;
  height: 24px;
  padding: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.task-action:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.task-action--delete:hover {
  background: var(--status-error-subtle);
  color: var(--status-error);
  border-color: var(--status-error);
}

/* ========== EMPTY BACKLOG STATE ========== */
.backlog-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  text-align: center;
  color: var(--text-muted);
  height: 100%;
}

.backlog-empty__icon {
  width: 32px;
  height: 32px;
  opacity: 0.4;
  margin-bottom: var(--spacing-sm);
}

.backlog-empty__text {
  font-size: var(--font-sm);
}