.supervision-period-selector-host {
  min-width: 0;
  max-width: 100%;
}

.supervision-period-selector-host[data-period-summary='compact'] {
  margin-bottom: var(--space-4);
}

.supervision-period-selector {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3, 12px);
  min-width: 0;
  padding: var(--space-3);
}

.supervision-period-selector__row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3, 12px);
  min-width: 0;
}

.supervision-period-selector__tabs {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
}

.supervision-period-selector__tab {
  flex: 1 1 0;
  white-space: nowrap;
}

.supervision-period-selector__tab[aria-pressed='true'] {
  background: var(--color-brand-soft, #fee2e4);
  color: var(--color-brand, #e63946);
  font-weight: 600;
}

.supervision-period-selector__nav {
  display: flex;
  flex: 0 0 auto;
  gap: var(--space-1, 4px);
}

.supervision-period-selector__nav .ui-button {
  width: var(--space-8);
  min-height: var(--space-10);
  padding: var(--space-2) var(--space-1);
  white-space: nowrap;
  border-color: transparent;
}

.supervision-period-selector__nav span {
  display: inline-flex;
}

.supervision-period-selector__nav svg {
  width: var(--space-4);
  height: var(--space-4);
}

.supervision-period-selector__nav svg [fill='currentColor'] {
  fill: none;
}

.supervision-period-selector__row--detail {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: var(--space-2);
  /* 对齐四等分按钮中“学期”两字的右边缘。 */
  padding-inline-end: calc(12.5% - var(--font-size-base));
}

.supervision-period-selector__summary {
  display: flex;
  flex: 1 1 auto;
  flex-direction: row;
  align-items: baseline;
  justify-content: flex-end;
  gap: var(--space-1);
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
}

.supervision-period-selector__label,
.supervision-period-selector__range,
.supervision-period-selector__semester {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: var(--font-size-sm);
  font-family: var(--font-body);
  line-height: var(--line-height-base);
}

.supervision-period-selector__label {
  color: var(--color-text-primary, #2d2d2d);
  font-weight: 700;
  flex-shrink: 0;
}

.supervision-period-selector__label:empty,
.supervision-period-selector__semester:empty {
  display: none;
}

.supervision-period-selector--compact-summary .supervision-period-selector__semester:not(:empty)::before {
  content: '· ';
}

.supervision-period-selector__range,
.supervision-period-selector__semester,
.supervision-period-selector__status {
  color: var(--color-text-muted, #6b6b6b);
  font-size: var(--font-size-sm, 13px);
}

.supervision-period-selector__status {
  grid-column: 1 / -1;
  flex: 0 1 180px;
  min-width: 0;
  margin: 0;
  text-align: left;
}

.supervision-period-selector__picker {
  position: absolute;
  z-index: 10;
  top: calc(100% + var(--space-2));
  inset-inline: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  box-shadow: var(--shadow-lg);
}

.supervision-period-selector__picker .ui-field {
  margin: 0;
}

.supervision-period-selector__picker .ui-field__control {
  width: 100%;
  min-width: 0;
}

.supervision-period-selector__picker [data-period-close] {
  align-self: flex-end;
}

.supervision-period-selector [hidden] {
  display: none;
}

.supervision-period-selector [disabled] {
  cursor: not-allowed;
}

@media (max-width: 599px) {
  .supervision-period-selector__picker .ui-field__control {
    font-size: var(--font-size-control-touch);
  }

  .supervision-period-selector__status {
    grid-column: 1 / -1;
    text-align: left;
  }
}

@media (min-width: 840px) {
  .supervision-period-selector-host[data-period-summary='compact'] {
    margin-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .supervision-period-selector * {
    transition: none;
  }
}