/* =========================================================
   Kanban Board, Sprint Planning & Release Management Styles
   ========================================================= */

/* --- Board Container & Columns --- */
.board-wrapper {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 24px;
  min-height: calc(100vh - 180px);
  align-items: flex-start;
}

.kanban-column {
  flex: 0 0 320px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 180px);
}

.column-header {
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.column-title {
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.column-count {
  background: var(--bg-surface-elevated);
  font-size: 11px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
}

.cards-container {
  flex: 1;
  padding: 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 120px;
  transition: background-color 0.2s;
}

.cards-container.drag-over {
  background: rgba(99, 102, 241, 0.08);
  border: 2px dashed var(--primary);
  border-radius: var(--radius-md);
}

/* --- Issue Card --- */
.issue-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px;
  cursor: grab;
  user-select: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.issue-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: rgba(99, 102, 241, 0.4);
}

.issue-card.dragging {
  opacity: 0.4;
  cursor: grabbing;
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.card-key {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

.card-epic-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  background: rgba(168, 85, 247, 0.15);
  color: var(--type-epic);
  border: 1px solid rgba(168, 85, 247, 0.3);
  font-weight: 600;
  width: fit-content;
}

.card-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--text-muted);
}

.story-points-badge {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-full);
}

.card-assignee-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: grid;
  place-content: center;
  font-size: 10px;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
}

/* =========================================================
   Sprint Planning & Backlog View
   ========================================================= */

.sprint-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: 20px;
  overflow: hidden;
}

.sprint-header {
  padding: 14px 20px;
  background: var(--bg-surface-elevated);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 12px;
}

.sprint-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sprint-name {
  font-size: 16px;
  font-weight: 700;
}

.sprint-status-tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: 700;
  text-transform: uppercase;
}

.sprint-status-tag.active {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.sprint-status-tag.planning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.sprint-status-tag.completed {
  background: rgba(100, 116, 139, 0.15);
  color: var(--text-muted);
  border: 1px solid rgba(100, 116, 139, 0.3);
}

.sprint-dates {
  font-size: 12px;
  color: var(--text-muted);
}

.sprint-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sprint-items-list {
  padding: 8px 12px;
  min-height: 60px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sprint-items-list.drag-over {
  background: rgba(99, 102, 241, 0.05);
  border: 2px dashed var(--primary);
}

.backlog-row {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.backlog-row:hover {
  background: var(--bg-surface-hover);
  border-color: rgba(99, 102, 241, 0.4);
}

.backlog-row-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

.backlog-row-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* =========================================================
   Releases Roadmap View
   ========================================================= */

.releases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 20px;
}

.release-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.release-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.release-title {
  font-size: 18px;
  font-weight: 700;
}

.release-version {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.progress-bar-container {
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-full);
  height: 8px;
  overflow: hidden;
  position: relative;
}

.progress-bar-fill {
  background: linear-gradient(90deg, #6366f1, #10b981);
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

.release-sprints-box {
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-md);
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.release-sprints-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.sprint-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  font-size: 12px;
  font-weight: 600;
  margin: 3px;
}

/* =========================================================
   Issue Detail Drawer / Modal & Attachments
   ========================================================= */

.issue-detail-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}

.detail-main {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.detail-sidebar {
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  border: 1px solid var(--border-color);
}

.field-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

/* Dropzone for Attachments */
.dropzone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  cursor: pointer;
  background: var(--bg-surface-elevated);
  transition: all 0.2s ease;
}

.dropzone:hover, .dropzone.drag-over {
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.08);
}

.attachments-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.attachment-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  max-width: 240px;
}

.attachment-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Comments thread */
.comments-thread {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 14px;
}

.comment-item {
  display: flex;
  gap: 12px;
}

.comment-content {
  flex: 1;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 14px;
}

.comment-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
  font-size: 12px;
}

.comment-author {
  font-weight: 700;
}

.comment-time {
  color: var(--text-muted);
}

@media (max-width: 900px) {
  .issue-detail-layout { grid-template-columns: 1fr; }
}