/* -------------------------------------------------------------
 * iFlyCalendar - Calendar View Styling Module (Vanilla CSS)
 * ------------------------------------------------------------- */

.calendar-view {
  width: 100%;
  height: 100%;
  padding: 24px;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  overflow: hidden;
}

/* Calendar Header Controls */
.calendar-controls-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-shrink: 0;
}

.calendar-title-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

.calendar-month-title {
  font-family: var(--font-family-title);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  min-width: 180px;
}

.calendar-nav-buttons {
  display: flex;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 3px;
}

.calendar-nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: all 0.2s;
}

.calendar-nav-btn:hover {
  background-color: var(--card-bg);
  color: var(--text-primary);
}

.calendar-today-btn {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.calendar-today-btn:hover {
  background-color: var(--border-color);
  color: var(--text-primary);
}

.calendar-legend {
  display: flex;
  gap: 12px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.legend-color-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-round);
}

/* Calendar Grid Container */
.calendar-grid-container {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background-color: var(--bg-secondary);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

/* Day Names Header Grid */
.calendar-days-header-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  background-color: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.calendar-day-label {
  padding: 10px 0;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-right: 1px solid var(--border-color);
}

.calendar-day-label:last-child {
  border-right: none;
}

/* Monthly Dates Grid */
.calendar-dates-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  grid-template-rows: repeat(6, 1fr);
  flex-grow: 1;
  height: 100%;
}

/* Individual Calendar Cell */
.calendar-cell {
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 80px;
  position: relative;
  overflow: hidden;
  transition: background-color 0.15s;
}

.calendar-cell:nth-child(7n) {
  border-right: none;
}

.calendar-cell:nth-last-child(-n+7) {
  border-bottom: none;
}

/* Muted cells for prev/next month dates */
.calendar-cell.muted {
  background-color: rgba(0, 0, 0, 0.02);
}

.calendar-cell.muted .day-number {
  color: var(--text-muted);
}

/* Day Number styling */
.calendar-cell-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2px;
}

.day-number {
  font-family: var(--font-family-title);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-round);
}

/* Today style */
.calendar-cell.today .day-number {
  background-color: var(--accent-color);
  color: white !important;
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

/* Drag over highlights */
.calendar-cell.drag-over {
  background-color: var(--accent-light) !important;
  border: 1px dashed var(--accent-color);
}

/* Empty Cell Add Card Button */
.cell-add-btn {
  opacity: 0;
  color: var(--text-muted);
  transition: opacity 0.15s, color 0.15s;
  padding: 2px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.calendar-cell:hover .cell-add-btn {
  opacity: 1;
}

.cell-add-btn:hover {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
}

/* Card list inside calendar cell */
.calendar-cell-cards {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
  padding-bottom: 2px;
  max-height: calc(100% - 26px); /* Reserve top spacing for header */
}

/* Webkit scrollbar for cell cards list */
.calendar-cell-cards::-webkit-scrollbar {
  width: 3px;
}
.calendar-cell-cards::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 2px;
}

/* Draggable calendar card pill */
.calendar-card-pill {
  font-size: 0.72rem;
  font-weight: 550;
  padding: 4px 8px;
  border-radius: 4px;
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
  border-left: 3px solid var(--border-color);
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  box-shadow: var(--shadow-sm);
  transition: all 0.1s ease;
  user-select: none;
}

.calendar-card-pill:hover {
  background-color: var(--border-color);
  transform: translateX(1px);
}

.calendar-card-pill.dragging {
  opacity: 0.4;
  transform: scale(0.95);
}

/* Status variants for border-left */
.calendar-card-pill.completed {
  border-left-color: var(--color-success);
  background-color: rgba(16, 185, 129, 0.08);
}
.calendar-card-pill.completed:hover {
  background-color: rgba(16, 185, 129, 0.15);
}

.calendar-card-pill.overdue {
  border-left-color: var(--color-danger);
  background-color: rgba(239, 68, 68, 0.08);
}
.calendar-card-pill.overdue:hover {
  background-color: rgba(239, 68, 68, 0.15);
}

.calendar-card-pill.due-soon {
  border-left-color: var(--color-warning);
  background-color: rgba(245, 158, 11, 0.08);
}
.calendar-card-pill.due-soon:hover {
  background-color: rgba(245, 158, 11, 0.15);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .calendar-view {
    padding: 12px;
  }
  
  .calendar-month-title {
    font-size: 1.2rem;
    min-width: unset;
  }
  
  .calendar-legend {
    display: none; /* Hide legend on mobile to conserve header space */
  }

  .calendar-day-label {
    font-size: 0.65rem;
    padding: 6px 0;
  }

  .day-number {
    font-size: 0.75rem;
    width: 20px;
    height: 20px;
  }

  .calendar-card-pill {
    padding: 2px 4px;
    font-size: 0.65rem;
    border-left-width: 2px;
  }
}