.period-picker-host {
  position: relative;
  width: 100%;
  max-width: 340px;
}

.period-picker-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: linear-gradient(180deg, #fff 0%, #f8fafc 100%);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
  cursor: pointer;
  text-align: left;
  transition: border-color .15s, box-shadow .15s;
}

.period-picker-trigger:hover {
  border-color: #bfdbfe;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.08);
}

.period-picker-trigger-icon {
  font-size: 18px;
  line-height: 1;
}

.period-picker-trigger-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.period-picker-trigger-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: .05em;
}

.period-picker-trigger-value {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  font-family: 'IBM Plex Mono', monospace;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.period-picker-trigger-caret {
  color: var(--text3);
  font-size: 12px;
  transition: transform .15s;
}

.period-picker-trigger-caret.open {
  transform: rotate(180deg);
}

.period-picker-backdrop {
  position: fixed;
  inset: 0;
  border: none;
  background: transparent;
  cursor: default;
  z-index: 40;
}

.period-picker {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  right: 0;
  z-index: 50;
  background: linear-gradient(180deg, #fff 0%, #f8fafc 100%);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 -8px 28px rgba(15, 23, 42, 0.12);
  padding: 14px;
}

.period-picker-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
}

.period-picker-title {
  flex: 1;
  text-align: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -.01em;
}

.period-picker-nav {
  width: 32px;
  height: 32px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text2);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
}

.period-picker-nav:hover:not(:disabled) {
  background: var(--bg2);
  border-color: var(--border2);
  color: var(--text);
}

.period-picker-nav:disabled {
  opacity: .35;
  cursor: not-allowed;
}

.period-picker-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 6px;
}

.period-picker-weekdays span {
  text-align: center;
  font-size: 10px;
  font-weight: 700;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: 4px 0;
}

.period-picker-day-grid,
.period-picker-month-grid {
  display: grid;
  gap: 6px;
}

.period-picker-day-grid {
  grid-template-columns: repeat(7, 1fr);
}

.period-picker-month-grid {
  grid-template-columns: repeat(3, 1fr);
}

.period-picker-day-cell,
.period-picker-month-cell {
  border: 1px solid transparent;
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s, box-shadow .15s;
}

.period-picker-day-cell {
  height: 36px;
  font-family: 'IBM Plex Mono', monospace;
}

.period-picker-month-cell {
  height: 42px;
}

.period-picker-day-cell.empty {
  background: transparent;
  border: none;
  cursor: default;
}

.period-picker-day-cell:hover:not(:disabled):not(.empty),
.period-picker-month-cell:hover:not(:disabled) {
  background: var(--blue-bg);
  border-color: #bfdbfe;
}

.period-picker-day-cell.today:not(.selected),
.period-picker-month-cell.today:not(.selected) {
  border-color: #93c5fd;
  color: var(--blue);
}

.period-picker-day-cell.selected,
.period-picker-month-cell.selected {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.28);
}

.period-picker-day-cell:disabled,
.period-picker-month-cell:disabled {
  color: #c3cad4;
  background: #f8fafc;
  cursor: not-allowed;
  opacity: .75;
}

.period-picker-footer {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.period-picker-hint {
  font-size: 11px;
  color: var(--text3);
}

@media (max-width: 960px) {
  .period-picker-host {
    max-width: 100%;
  }
}