/* Scope all styles strictly below .ftl-date-difference to prevent host theme leakage */
.ftl-date-difference {
  box-sizing: border-box;
  font-family: inherit;
  color: #1e1e1e;
  background-color: #ffffff;
  border: 1px solid #dcdcde;
  border-radius: 8px;
  padding: 1.5rem;
  max-width: 600px;
  margin: 1.5rem auto;
}

.ftl-date-difference *,
.ftl-date-difference *::before,
.ftl-date-difference *::after {
  box-sizing: inherit;
}

/* Header & Language Switcher */
.ftl-date-difference__header {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-bottom: 1.25rem;
}

.ftl-date-difference__lang-switcher {
  display: inline-flex;
  border: 1px solid #8c8f94;
  border-radius: 4px;
  overflow: hidden;
}

.ftl-date-difference__lang-btn {
  background: #f6f7f7;
  border: none;
  color: #2c3338;
  padding: 0.35rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  line-height: 1.4;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.ftl-date-difference__lang-btn:not(:last-child) {
  border-right: 1px solid #8c8f94;
}

.ftl-date-difference__lang-btn:hover {
  background: #f0f0f1;
}

.ftl-date-difference__lang-btn[aria-pressed="true"],
.ftl-date-difference__lang-btn.is-active {
  background: #2271b1;
  color: #ffffff;
}

.ftl-date-difference__lang-btn:focus-visible {
  outline: 2px solid #2271b1;
  outline-offset: -2px;
  z-index: 1;
}

/* Form Layout */
.ftl-date-difference__form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.ftl-date-difference__field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.ftl-date-difference__label {
  font-size: 0.9375rem;
  font-weight: 600;
  color: #1e1e1e;
}

.ftl-date-difference__input[type="date"] {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 1rem;
  line-height: 1.5;
  color: #2c3338;
  background-color: #ffffff;
  border: 1px solid #8c8f94;
  border-radius: 4px;
  min-height: 42px;
}

.ftl-date-difference__input[type="date"]:focus {
  border-color: #2271b1;
  outline: 2px solid #2271b1;
  outline-offset: 0;
}

.ftl-date-difference__input[aria-invalid="true"] {
  border-color: #d63638;
}

/* Inclusive Checkbox */
.ftl-date-difference__field--checkbox {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
}

.ftl-date-difference__checkbox {
  width: 1.25rem;
  height: 1.25rem;
  margin: 0;
  cursor: pointer;
  accent-color: #2271b1;
}

.ftl-date-difference__checkbox-label {
  font-size: 0.9375rem;
  color: #2c3338;
  cursor: pointer;
  user-select: none;
}

/* Actions */
.ftl-date-difference__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.ftl-date-difference__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease;
  min-height: 42px;
}

.ftl-date-difference__btn--primary {
  background-color: #2271b1;
  color: #ffffff;
}

.ftl-date-difference__btn--primary:hover {
  background-color: #135e96;
}

.ftl-date-difference__btn--primary:focus-visible {
  outline: 2px solid #135e96;
  outline-offset: 2px;
}

.ftl-date-difference__btn--secondary {
  background-color: #f6f7f7;
  color: #2c3338;
  border-color: #8c8f94;
}

.ftl-date-difference__btn--secondary:hover:not(:disabled) {
  background-color: #f0f0f1;
  border-color: #2c3338;
}

.ftl-date-difference__btn--secondary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.ftl-date-difference__btn--secondary:focus-visible:not(:disabled) {
  outline: 2px solid #2271b1;
  outline-offset: 2px;
}

/* Feedback & Messages */
.ftl-date-difference__error {
  padding: 0.75rem 1rem;
  background-color: #fcf0f1;
  border-left: 4px solid #d63638;
  color: #b32d2e;
  font-size: 0.9375rem;
  margin-top: 0.75rem;
  border-radius: 2px;
}

.ftl-date-difference__result {
  margin-top: 1.25rem;
  padding: 1.25rem;
  background-color: #f0f6fc;
  border: 1px solid #c8d7e1;
  border-radius: 6px;
}

.ftl-date-difference__total {
  font-size: 1.5rem;
  font-weight: 700;
  color: #0a4b78;
  margin-bottom: 0.25rem;
}

.ftl-date-difference__breakdown {
  font-size: 1.0625rem;
  color: #2c3338;
  margin-bottom: 0.75rem;
}

.ftl-date-difference__copy-feedback {
  display: inline-block;
  margin-left: 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: #007017;
}

/* Responsive adjustments at 320px */
@media (max-width: 480px) {
  .ftl-date-difference {
    padding: 1rem;
    margin: 1rem auto;
  }

  .ftl-date-difference__actions {
    flex-direction: column;
  }

  .ftl-date-difference__btn {
    width: 100%;
  }

  .ftl-date-difference__copy-feedback {
    margin-left: 0;
    margin-top: 0.5rem;
    display: block;
    text-align: center;
  }
}