:host {
  display: block;
}

.ntf-mention-input {
  position: relative;
}

.ntf-mention-input__wrapper {
  position: relative;
}

.ntf-mention-input__field {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--ntf-feed-border);
  border-radius: 0.5rem;
  background: var(--ntf-item-bg);
  color: var(--ntf-item-title-color);
  font-size: var(--font-size-sm, 0.875rem);
  font-family: inherit;
  line-height: 1.5;
  resize: none;
  transition:
    border-color var(--ntf-transition, 150ms ease-in-out),
    box-shadow var(--ntf-transition, 150ms ease-in-out);

  &::placeholder {
    color: var(--ntf-item-time-color);
  }

  &:focus {
    outline: none;
    border-color: var(--color-primary-500, #3b82f6);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
  }

  &--multiline {
    min-height: 80px;
    resize: vertical;
  }
}

.ntf-mention-input__popup {
  position: absolute;
  bottom: 100%;
  left: 0;
  right: 0;
  margin-bottom: 4px;
  background: var(--ntf-mention-popup-bg);
  border: 1px solid var(--ntf-feed-border);
  border-radius: var(--ntf-mention-popup-radius);
  box-shadow: var(--ntf-mention-popup-shadow);
  max-height: var(--ntf-mention-popup-max-height);
  overflow-y: auto;
  z-index: 10;
  animation: ntf-popup-in 150ms var(--ntf-ease-smooth, ease-out);
}

.ntf-mention-input__popup-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: none;
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: background-color var(--ntf-transition, 150ms ease-in-out);

  &:hover,
  &--active {
    background: var(--ntf-item-hover-bg);
  }

  &:first-child {
    border-radius: var(--ntf-mention-popup-radius) var(--ntf-mention-popup-radius) 0 0;
  }

  &:last-child {
    border-radius: 0 0 var(--ntf-mention-popup-radius) var(--ntf-mention-popup-radius);
  }
}

.ntf-mention-input__popup-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.ntf-mention-input__popup-avatar-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary-50, #eff6ff);
  color: var(--color-primary-500, #3b82f6);
  font-size: 0.6875rem;
  font-weight: 600;
  flex-shrink: 0;
}

.ntf-mention-input__popup-name {
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--ntf-item-title-color);
}

.ntf-mention-input__footer {
  display: flex;
  justify-content: flex-end;
  padding-top: 0.25rem;
}

.ntf-mention-input__counter {
  font-size: var(--font-size-xs, 0.75rem);
  color: var(--ntf-item-time-color);
}

@keyframes ntf-popup-in {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}