/* Modal overlay */
.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal-backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-surface-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal.is-open {
  opacity: 1;
  visibility: visible;
}

/* Modal content */
.modal__content {
  position: relative;
  z-index: var(--z-modal);
  width: 100%;
  max-width: 480px;
  max-height: calc(100vh - var(--space-16));
  margin: var(--space-4);
  background-color: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  transform: translateY(8px) scale(0.98);
  transition: transform var(--transition-base);
  overflow: hidden;
}

.modal.is-open .modal__content {
  transform: translateY(0) scale(1);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.modal__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
}

.modal__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  color: var(--color-text-tertiary);
  transition: all var(--transition-fast);
}

.modal__close:hover {
  background-color: var(--color-primary-subtle);
  color: var(--color-text);
}

.modal__body {
  padding: var(--space-6);
  overflow-y: auto;
  flex: 1;
}

.modal__footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
}

/* Mobile: bottom-sheet */
@media (max-width: 640px) {
  .modal {
    align-items: flex-end;
  }

  .modal__content {
    max-width: 100%;
    max-height: 85vh;
    margin: 0;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    transform: translateY(100%);
  }

  .modal.is-open .modal__content {
    transform: translateY(0);
  }
}