.period-popover__overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.period-popover__content {
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  max-width: 480px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
}

.period-popover__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  border-bottom: 1px solid #e0e0e0;
}

.period-popover__header h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
}

.period-popover__close {
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  padding: 0;
  color: #666;
  transition: color 0.2s;
}

.period-popover__close:hover {
  color: #000;
}

.period-popover__body {
  padding: 20px;
}

.period-popover__error {
  background-color: #ffebee;
  color: #c62828;
  padding: 12px;
  border-radius: 4px;
  margin-bottom: 16px;
  font-size: 14px;
}

.period-popover__adhoc-notice {
  font-size: 13px;
  color: #666;
  margin: 0 0 12px 0;
}

.period-popover__date-range {
  font-size: 15px;
  font-weight: 500;
  color: #333;
}

.period-popover__field {
  margin-bottom: 16px;
}

.period-popover__label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
  color: #333;
}

.period-popover__input,
.period-popover__select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid #d0d0d0;
  border-radius: 4px;
  font-size: 14px;
  background-color: #fff;
}

.period-popover__input:disabled,
.period-popover__select:disabled {
  background-color: #f5f5f5;
  cursor: not-allowed;
}

.period-popover__fieldset {
  border: none;
  padding: 0;
  margin: 0 0 16px 0;
}

.period-popover__radio-label,
.period-popover__checkbox-label {
  display: flex;
  align-items: center;
  font-size: 14px;
  cursor: pointer;
  user-select: none;
  margin-bottom: 8px;
}

.period-popover__radio-label input,
.period-popover__checkbox-label input {
  margin-right: 8px;
  cursor: pointer;
}

.period-popover__footer {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  padding: 16px 20px;
  border-top: 1px solid #e0e0e0;
  background-color: #fafafa;
}

.period-popover__button {
  padding: 8px 16px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: background-color 0.2s;
}

.period-popover__button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.period-popover__button--primary {
  background-color: #0066cc;
  color: #fff;
}

.period-popover__button--primary:hover:not(:disabled) {
  background-color: #0052a3;
}

.period-popover__button--secondary {
  background-color: #e0e0e0;
  color: #333;
}

.period-popover__button--secondary:hover:not(:disabled) {
  background-color: #d0d0d0;
}

.period-popover__button--danger {
  background-color: #d32f2f;
  color: #fff;
  margin-right: auto;
}

.period-popover__button--danger:hover:not(:disabled) {
  background-color: #b71c1c;
}

.period-popover__delete-confirm {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
}

.period-popover__delete-confirm-text {
  font-size: 14px;
  color: #333;
  margin-right: auto;
}