/* ── Calendar grid ───────────────────────────────────────────── */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  grid-auto-rows: minmax(var(--cell-min-height), 1fr); /* rows share available height, never below min */
  flex: 1;
  overflow-y: auto;
  background: var(--color-border);
  gap: 1px;
}

/* ── Calendar cell ───────────────────────────────────────────── */
.calendar-cell {
  background: var(--color-surface);
  min-height: var(--cell-min-height);
  height: 100%;          /* fill the fixed grid row */
  overflow: hidden;      /* clip content at the cell boundary */
  padding: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  cursor: pointer;
  position: relative;
  transition: background-color var(--transition-fast);
  user-select: none;
  box-sizing: border-box;
}

.calendar-cell:hover {
  background: var(--color-surface-hover);
}

.calendar-cell.other-month {
  background: var(--color-other-month-bg);
}

.calendar-cell.other-month .day-number {
  color: var(--color-other-month);
}

.calendar-cell.today {
  background: var(--color-today-bg);
}

.calendar-cell.weekend {
  background: var(--color-weekend-bg);
}

.calendar-cell.today.weekend {
  background: var(--color-today-bg);
}

.calendar-cell.dragover {
  background: var(--color-dragover-bg);
  outline: 2px dashed var(--color-dragover-border);
  outline-offset: -2px;
}

.calendar-cell.search-highlight {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

/* ── Day header ──────────────────────────────────────────────── */
.day-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-1);
  gap: var(--space-1);
}

.day-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  flex-shrink: 0;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.today .day-number {
  background: var(--color-today-border);
  color: #FFFFFF;
}

.day-counter {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* ── Add task button (appears on hover) ─────────────────────── */
.day-add-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  flex-shrink: 0;
  cursor: pointer;
  margin-left: auto;
}

.day-add-btn:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.calendar-cell:hover .day-add-btn {
  display: flex;
}

.day-add-btn svg {
  width: 14px;
  height: 14px;
}

/* ── Tasks in cell ───────────────────────────────────────────── */
.cell-tasks {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-height: 0;      /* allows flex child to shrink below content size */
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}
.cell-tasks::-webkit-scrollbar {
  width: 4px;
}
.cell-tasks::-webkit-scrollbar-track {
  background: transparent;
}
.cell-tasks::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 2px;
}
.cell-tasks::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* ── More tasks indicator ────────────────────────────────────── */
.cell-more {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  padding: 2px var(--space-1);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  text-align: center;
}

.cell-more:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* ── Task card (inside calendar cell) ───────────────────────── */
.task-card {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: 3px var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  transition:
    opacity var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
  position: relative;
  line-height: 1.4;
  min-height: 22px;
}

.task-card:hover {
  filter: brightness(0.95);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.task-card.dragging {
  opacity: 0.4;
  transform: scale(0.97);
}

.task-card.selected {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

.task-card.completed {
  opacity: 0.55;
}

.task-card.completed .task-card-title {
  text-decoration: line-through;
  text-decoration-thickness: 1.5px;
}

/* Color variants */
.task-card.color-blue   { background: var(--task-blue-bg);   color: var(--task-blue-text); }
.task-card.color-green  { background: var(--task-green-bg);  color: var(--task-green-text); }
.task-card.color-red    { background: var(--task-red-bg);    color: var(--task-red-text); }
.task-card.color-orange { background: var(--task-orange-bg); color: var(--task-orange-text); }
.task-card.color-purple { background: var(--task-purple-bg); color: var(--task-purple-text); }
.task-card.color-gray   { background: var(--task-gray-bg);   color: var(--task-gray-text); }
.task-card.color-pink   { background: var(--task-pink-bg);   color: var(--task-pink-text); }
.task-card.color-yellow { background: var(--task-yellow-bg); color: var(--task-yellow-text); }

.task-card-checkbox {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  border: 1.5px solid currentColor;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast);
  cursor: pointer;
}

.task-card-checkbox.checked {
  background: currentColor;
}

.task-card-checkbox.checked svg {
  display: block;
}

.task-card-checkbox svg {
  display: none;
  width: 8px;
  height: 8px;
  color: var(--color-surface);
}

.task-card-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.3;
}

/* ── Drag ghost ──────────────────────────────────────────────── */
.drag-ghost {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.85;
  transform: rotate(2deg) scale(1.05);
  box-shadow: var(--shadow-xl);
  border-radius: var(--radius-sm);
  padding: 4px var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: none;
  white-space: nowrap;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Context menu ────────────────────────────────────────────── */
.context-menu {
  position: fixed;
  z-index: var(--z-dropdown);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-1);
  min-width: 180px;
  animation: contextMenuIn var(--duration-fast) var(--ease-default);
}

@keyframes contextMenuIn {
  from { opacity: 0; transform: scale(0.95) translateY(-4px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.context-menu-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  width: 100%;
  text-align: left;
}

.context-menu-item:hover {
  background: var(--color-bg-secondary);
}

.context-menu-item.danger {
  color: var(--color-danger);
}

.context-menu-item svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  opacity: 0.8;
}

.context-menu-separator {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-1) 0;
}

/* ── Compact mode ─────────────────────────────────────────────── */
.app.compact .calendar-cell {
  min-height: 80px;
}
.app.compact .task-card {
  padding: 2px var(--space-2);
  min-height: 18px;
}
.app.compact .day-number {
  width: 22px;
  height: 22px;
  font-size: var(--font-size-xs);
}

/* ── Hide weekends ────────────────────────────────────────────── */
.app.hide-weekends .calendar-grid {
  grid-template-columns: repeat(5, 1fr);
}
.app.hide-weekends .calendar-cell.sat,
.app.hide-weekends .calendar-cell.sun,
.app.hide-weekends .calendar-weekday.sat,
.app.hide-weekends .calendar-weekday.sun {
  display: none;
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  :root { --cell-min-height: 80px; }

  .calendar-cell {
    padding: var(--space-1);
  }
  .day-number {
    width: 22px;
    height: 22px;
    font-size: var(--font-size-xs);
  }
  .task-card {
    font-size: 0.625rem;
    padding: 2px 4px;
  }
  .task-card-checkbox {
    display: none;
  }
  .day-counter {
    display: none;
  }
}

@media (max-width: 480px) {
  .calendar-weekday {
    font-size: 0.625rem;
    padding: var(--space-1) 2px;
  }
}