#ui-surfaces .calendar-panel {
  position: absolute;
  left: 50%;
  top: 50%;
  bottom: auto;
  width: min(50rem, calc(100% - 1rem));
  height: auto;
  max-height: calc(100% - 1rem);
  padding: 1rem;
  border-radius: 8px;
  transform: translate(-50%, -48%);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  overflow: auto;
  overscroll-behavior: contain;
  content-visibility: visible;
  contain-intrinsic-size: none;
  font-size: var(--ui-text);
  z-index: 1;
  transition: opacity var(--ui-panel-duration), transform var(--ui-panel-duration), visibility var(--ui-panel-duration);
}

#ui-surfaces .calendar-panel.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, -50%);
}

#calendar-close {
  position: absolute;
  right: 0.5rem;
  top: 0.5rem;
  width: var(--ui-control);
  height: var(--ui-control);
  color: inherit;
  background: transparent;
  border: 1px solid currentColor;
  border-radius: 4px;
  font-size: 1.5rem;
  cursor: pointer;
}

#ui-surfaces #calendar-month {
  margin: 0 3rem 0.75rem;
  min-height: var(--ui-control);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
}

#ui-surfaces .calendar-weekdays,
#ui-surfaces .calendar-grid {
  gap: 0.25rem;
  grid-template-columns: repeat(7, minmax(0, 1fr));
}

#ui-surfaces .calendar-weekdays {
  font-size: var(--ui-label);
}

#ui-surfaces .calendar-grid {
  grid-auto-rows: var(--ui-control);
}

#ui-surfaces .calendar-dates {
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
}

#ui-surfaces .calendar-day {
  min-width: var(--ui-control);
  min-height: var(--ui-control);
  box-sizing: border-box;
  border: 0;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

#ui-surfaces .schedule-panel {
  display: none;
  transform: none;
  transition: none;
  margin-top: 0.75rem;
  overflow-wrap: anywhere;
}

#ui-surfaces .calendar-day.golden-week {
  border: 2px solid gold;
}

#ui-surfaces .calendar-day.sports-day {
  border-bottom: 4px solid var(--accent-color);
}

#ui-surfaces .schedule-panel.active {
  display: block;
}

#ui-surfaces .schedule-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

#ui-surfaces .cell-content {
  font-size: var(--ui-label);
  white-space: normal;
}

@media (max-height: 520px) and (orientation: landscape) {
  #ui-surfaces .calendar-panel {
    padding: 0.5rem;
  }
  #ui-surfaces .calendar-panel:has(.schedule-panel.active) {
    display: grid;
    height: calc(100% - 1rem);
    grid-template-columns: minmax(calc(7 * var(--ui-control) + 2.5rem), 1.4fr) minmax(0, 1fr);
    grid-template-rows: auto minmax(0, 1fr);
    column-gap: 0.75rem;
  }
  #ui-surfaces .calendar-dates {
    grid-column: 1;
  }
  #ui-surfaces #calendar-month {
    grid-column: 1 / -1;
  }
  #ui-surfaces .schedule-panel.active {
    grid-column: 2;
    grid-row: 2;
    overflow: auto;
    overscroll-behavior: contain;
    margin: 0;
  }
  #ui-surfaces .schedule-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  #ui-surfaces .calendar-panel {
    transition: none;
  }
}