.kanban-board {
  display: flex;
  gap: 0.85rem;
  overflow-x: auto;
  padding-bottom: 0.75rem;
  align-items: flex-start;
  scroll-behavior: smooth;
}

.kanban-column {
  flex: 0 0 280px;
  max-width: 280px;
  background: #eef1f5;
  border: 1px solid var(--km-border);
  border-radius: 10px;
  min-height: 420px;
  display: flex;
  flex-direction: column;
  transition: background 180ms ease, box-shadow 220ms cubic-bezier(0.22, 1, 0.36, 1);
}

.kanban-column:nth-child(1) { border-top: 3px solid #6366f1; }
.kanban-column:nth-child(2) { border-top: 3px solid var(--km-blue); }
.kanban-column:nth-child(3) { border-top: 3px solid var(--ind-warning, #d97706); }
.kanban-column:nth-child(4) { border-top: 3px solid #059669; }
.kanban-column:nth-child(5) { border-top: 3px solid var(--km-green); }

.kanban-column-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--km-border);
  background: #f8fafc;
  border-radius: 10px 10px 0 0;
}

.kanban-column-header h2 {
  margin: 0;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--km-navy);
  letter-spacing: -0.01em;
}

.kanban-column-header .badge {
  font-size: 0.6875rem;
  font-weight: 700;
}

.kanban-column-body {
  padding: 0.65rem;
  display: grid;
  gap: 0.55rem;
  flex: 1;
}

.kanban-empty {
  color: var(--km-muted);
  font-size: 0.8125rem;
  text-align: center;
  padding: 1.5rem 0.5rem;
}

.ticket-card {
  background: #fff;
  border: 1px solid var(--km-border);
  border-left: 3px solid var(--km-blue);
  border-radius: 8px;
  padding: 0.75rem;
  cursor: grab;
  box-shadow: var(--shadow);
}

.ticket-card.priority-low { border-left-color: #98a2b3; }
.ticket-card.priority-medium { border-left-color: var(--km-blue); }
.ticket-card.priority-high { border-left-color: var(--ind-warning, #d97706); }
.ticket-card.priority-urgent { border-left-color: var(--ind-danger, #dc4c4c); }

.ticket-card:hover {
  border-color: #c5d0de;
}

.ticket-card:active { cursor: grabbing; }
.ticket-card.dragging {
  opacity: 0.55;
  transform: scale(0.98) rotate(1deg);
}

.ticket-card-id {
  font-size: 0.6875rem;
  color: var(--km-blue);
  font-weight: 700;
  margin-bottom: 0.3rem;
  letter-spacing: 0.02em;
}

.ticket-card-title {
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 0.65rem;
  line-height: 1.4;
  color: var(--km-navy);
  letter-spacing: -0.01em;
}

.ticket-card-meta {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
  font-size: 0.6875rem;
}

.due-date { color: var(--km-muted); }
.comment-count { color: var(--km-muted); }

.kanban-column.drag-over {
  outline: 2px dashed var(--km-blue);
  outline-offset: -4px;
  background: #e8f2fa;
  box-shadow: inset 0 0 0 1px rgba(0, 117, 188, 0.12);
}

@media (max-width: 768px) {
  .kanban-column { flex-basis: 260px; max-width: 260px; }
}