/* ==========================================================================
   DeltaSmart Kanban Board Styles
   Extracted from app.css and enhanced with priority borders, drag animations,
   quick-view overlay, filter bar, and mobile responsive layout.
   All values reference --ds-* design tokens.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Board Layout
   -------------------------------------------------------------------------- */

.kanban-board {
  display: flex;
  gap: var(--ds-space-4);
  overflow-x: auto;
  padding-bottom: var(--ds-space-4);
  min-height: 70vh;
  /* Smooth horizontal scrolling on mobile */
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x proximity;
}

/* --------------------------------------------------------------------------
   Columns
   -------------------------------------------------------------------------- */

.kanban-column {
  min-width: 290px;
  max-width: 320px;
  flex-shrink: 0;
  background: var(--ds-surface-sunken);
  border-radius: var(--ds-radius-lg);
  display: flex;
  flex-direction: column;
  scroll-snap-align: start;
}

.kanban-column-header {
  padding: var(--ds-space-3) var(--ds-space-4);
  font-weight: var(--ds-font-weight-semibold);
  font-size: var(--ds-font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--ds-text-secondary);
  border-bottom: 3px solid;
  border-radius: var(--ds-radius-lg) var(--ds-radius-lg) 0 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.kanban-column-header .kanban-count {
  background: var(--ds-surface-card);
  color: var(--ds-text-muted);
  font-size: var(--ds-font-size-xs);
  font-weight: var(--ds-font-weight-semibold);
  padding: 0.15em 0.55em;
  border-radius: var(--ds-radius-full);
  min-width: 1.5em;
  text-align: center;
  line-height: 1.4;
}

.kanban-column-body {
  padding: var(--ds-space-2);
  flex: 1;
  min-height: 100px;
}

/* Status colors for column headers */
.kanban-column[data-status="draft"] .kanban-column-header           { border-color: var(--ds-gray-500); }
.kanban-column[data-status="awaiting_stock"] .kanban-column-header   { border-color: var(--ds-warning); }
.kanban-column[data-status="in_progress"] .kanban-column-header      { border-color: var(--ds-brand-primary); }
.kanban-column[data-status="testing"] .kanban-column-header          { border-color: var(--ds-info); }
.kanban-column[data-status="ready_for_delivery"] .kanban-column-header { border-color: var(--ds-success); }
.kanban-column[data-status="delivered"] .kanban-column-header        { border-color: var(--ds-success); }
.kanban-column[data-status="closed"] .kanban-column-header           { border-color: var(--ds-gray-900); }
/* Order-type statuses */
.kanban-column[data-status="ordered"] .kanban-column-header          { border-color: var(--ds-info); }
.kanban-column[data-status="await_stock_confirmed"] .kanban-column-header { border-color: var(--ds-warning); }
/* Service-type statuses */
.kanban-column[data-status="complete"] .kanban-column-header         { border-color: var(--ds-success); }

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */

.kanban-card {
  background: var(--ds-surface-card);
  border-radius: var(--ds-radius-md);
  padding: var(--ds-space-3);
  margin-bottom: var(--ds-space-2);
  box-shadow: var(--ds-shadow-xs);
  cursor: grab;
  border-left: 3px solid transparent;
  transition: box-shadow var(--ds-duration-normal) var(--ds-ease-default),
              transform var(--ds-duration-normal) var(--ds-ease-default),
              opacity var(--ds-duration-normal) var(--ds-ease-default);
  position: relative;
}

.kanban-card:hover {
  box-shadow: var(--ds-shadow-md);
  transform: translateY(-1px);
}

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

/* Priority left-border colors */
.kanban-card[data-priority="low"]    { border-left-color: var(--ds-gray-400); }
.kanban-card[data-priority="normal"] { border-left-color: var(--ds-brand-primary); }
.kanban-card[data-priority="high"]   { border-left-color: var(--ds-warning); }
.kanban-card[data-priority="urgent"] { border-left-color: var(--ds-danger); }

/* Card header row: ID + priority badge */
.kanban-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--ds-space-1-5);
}

.kanban-card-id {
  font-size: var(--ds-font-size-xs);
  font-weight: var(--ds-font-weight-semibold);
  color: var(--ds-text-muted);
}

.kanban-card-title {
  font-size: var(--ds-font-size-sm);
  font-weight: var(--ds-font-weight-medium);
  color: var(--ds-text-primary);
  line-height: var(--ds-line-height-snug);
  margin-bottom: var(--ds-space-2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kanban-card-title a {
  color: inherit;
  text-decoration: none;
}

.kanban-card-title a:hover {
  color: var(--ds-brand-primary);
}

/* Card metadata row */
.kanban-card-meta {
  display: flex;
  align-items: center;
  gap: var(--ds-space-2);
  flex-wrap: wrap;
  font-size: var(--ds-font-size-xs);
  color: var(--ds-text-muted);
}

.kanban-card-meta i {
  font-size: 0.7rem;
}

.kanban-card-customer {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 120px;
}

.kanban-card-due {
  margin-left: auto;
  white-space: nowrap;
}

.kanban-card-due.text-danger {
  color: var(--ds-danger) !important;
  font-weight: var(--ds-font-weight-semibold);
}

/* Assigned avatar */
.kanban-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--ds-space-2);
  padding-top: var(--ds-space-1-5);
  border-top: 1px solid var(--ds-border-muted);
}

.kanban-avatar {
  width: 22px;
  height: 22px;
  border-radius: var(--ds-radius-full);
  background: var(--ds-brand-primary-subtle);
  color: var(--ds-brand-primary);
  font-size: 0.625rem;
  font-weight: var(--ds-font-weight-bold);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.kanban-assignee-name {
  font-size: var(--ds-font-size-xs);
  color: var(--ds-text-muted);
  margin-left: var(--ds-space-1);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100px;
}

/* Priority badge */
.kanban-priority-badge {
  font-size: 0.65rem;
  padding: 0.15em 0.5em;
  font-weight: var(--ds-font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border-radius: var(--ds-radius-sm);
}

/* --------------------------------------------------------------------------
   Drag & Drop
   -------------------------------------------------------------------------- */

/* Card being dragged: "lift" effect */
.kanban-card.dragging {
  opacity: 0.6;
  transform: rotate(2deg) scale(1.03);
  box-shadow: var(--ds-shadow-xl);
  z-index: var(--ds-z-raised);
}

/* Ghost placeholder where the card was */
.kanban-card.drag-ghost {
  opacity: 0;
  height: 0;
  padding: 0;
  margin: 0;
  border: none;
  overflow: hidden;
}

/* Drop zone states */
.kanban-drop-zone {
  min-height: 60px;
  border: 2px dashed transparent;
  border-radius: var(--ds-radius-md);
  transition: border-color var(--ds-duration-fast) var(--ds-ease-default),
              background-color var(--ds-duration-fast) var(--ds-ease-default);
}

.kanban-drop-zone.drag-over {
  border-color: var(--ds-brand-primary);
  background-color: var(--ds-brand-primary-subtle);
}

/* Drop indicator line between cards */
.kanban-drop-indicator {
  height: 3px;
  background: var(--ds-brand-primary);
  border-radius: var(--ds-radius-full);
  margin: var(--ds-space-1) 0;
  transition: opacity var(--ds-duration-fast) var(--ds-ease-default);
}

/* --------------------------------------------------------------------------
   Quick-View Overlay
   -------------------------------------------------------------------------- */

.kanban-quickview-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: var(--ds-z-backdrop);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--ds-duration-normal) var(--ds-ease-default),
              visibility var(--ds-duration-normal) var(--ds-ease-default);
}

.kanban-quickview-backdrop.show {
  opacity: 1;
  visibility: visible;
}

.kanban-quickview {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
  z-index: var(--ds-z-modal);
  background: var(--ds-surface-overlay);
  border-radius: var(--ds-radius-xl);
  box-shadow: var(--ds-shadow-2xl);
  width: 90%;
  max-width: 480px;
  max-height: 80vh;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--ds-duration-normal) var(--ds-ease-default),
              transform var(--ds-duration-normal) var(--ds-ease-default),
              visibility var(--ds-duration-normal) var(--ds-ease-default);
}

.kanban-quickview.show {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

.kanban-quickview-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: var(--ds-space-4) var(--ds-space-5);
  border-bottom: 1px solid var(--ds-border-default);
}

.kanban-quickview-header h5 {
  margin: 0;
  font-size: var(--ds-font-size-md);
  font-weight: var(--ds-font-weight-semibold);
  color: var(--ds-text-primary);
  line-height: var(--ds-line-height-snug);
}

.kanban-quickview-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--ds-text-muted);
  font-size: var(--ds-font-size-lg);
  padding: 0;
  line-height: 1;
  transition: color var(--ds-duration-fast) var(--ds-ease-default);
}

.kanban-quickview-close:hover {
  color: var(--ds-text-primary);
}

.kanban-quickview-body {
  padding: var(--ds-space-4) var(--ds-space-5);
}

.kanban-quickview-row {
  display: flex;
  align-items: flex-start;
  padding: var(--ds-space-2) 0;
  border-bottom: 1px solid var(--ds-border-muted);
  font-size: var(--ds-font-size-sm);
}

.kanban-quickview-row:last-child {
  border-bottom: none;
}

.kanban-quickview-label {
  width: 110px;
  flex-shrink: 0;
  color: var(--ds-text-muted);
  font-weight: var(--ds-font-weight-medium);
}

.kanban-quickview-value {
  color: var(--ds-text-primary);
  flex: 1;
  min-width: 0;
}

.kanban-quickview-footer {
  padding: var(--ds-space-3) var(--ds-space-5);
  border-top: 1px solid var(--ds-border-default);
  display: flex;
  justify-content: flex-end;
  gap: var(--ds-space-2);
}

/* --------------------------------------------------------------------------
   Filter Bar
   -------------------------------------------------------------------------- */

.kanban-filter-bar {
  margin-bottom: var(--ds-space-4);
}

.kanban-filter-bar .card {
  background: var(--ds-surface-card);
  border: 1px solid var(--ds-border-default);
}

/* Loading indicator for HTMX filter requests */
.kanban-loading {
  display: none;
  text-align: center;
  padding: var(--ds-space-8);
  color: var(--ds-text-muted);
}

.kanban-loading.htmx-request {
  display: block;
}

/* --------------------------------------------------------------------------
   Empty Column State
   -------------------------------------------------------------------------- */

.kanban-empty {
  text-align: center;
  padding: var(--ds-space-6) var(--ds-space-4);
  color: var(--ds-text-disabled);
  font-size: var(--ds-font-size-sm);
}

.kanban-empty i {
  font-size: var(--ds-font-size-2xl);
  display: block;
  margin-bottom: var(--ds-space-2);
  opacity: 0.4;
}

/* --------------------------------------------------------------------------
   Mobile Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 767.98px) {
  .kanban-board {
    gap: var(--ds-space-3);
    min-height: 50vh;
    padding-bottom: var(--ds-space-6);
    scroll-snap-type: x mandatory;
    /* Ensure horizontal scroll is clearly visible */
    scrollbar-width: thin;
  }

  .kanban-column {
    min-width: 85vw;
    max-width: 85vw;
    scroll-snap-align: center;
  }

  .kanban-quickview {
    width: 95%;
    max-height: 85vh;
  }

  /* Scroll indicator hint */
  .kanban-board::after {
    content: '';
    flex-shrink: 0;
    width: var(--ds-space-4);
  }
}

@media (min-width: 768px) and (max-width: 1199.98px) {
  .kanban-column {
    min-width: 260px;
    max-width: 280px;
  }
}

/* --------------------------------------------------------------------------
   Dark Mode Adjustments
   -------------------------------------------------------------------------- */

[data-bs-theme="dark"] .kanban-card {
  box-shadow: var(--ds-shadow-sm);
}

[data-bs-theme="dark"] .kanban-card:hover {
  box-shadow: var(--ds-shadow-lg);
}

[data-bs-theme="dark"] .kanban-column-header .kanban-count {
  background: var(--ds-surface-raised);
}

[data-bs-theme="dark"] .kanban-quickview-backdrop {
  background: rgba(0, 0, 0, 0.65);
}

[data-bs-theme="dark"] .kanban-avatar {
  background: var(--ds-brand-primary-subtle);
}