/* Composer */
.composer {
  flex: none;
  padding: var(--block-space-half) calc(var(--inline-space) + 1vw);
  padding-block-end: calc(var(--block-space-half) + env(safe-area-inset-bottom, 0px));
  padding-inline-start: max(calc(var(--inline-space) + 1vw), env(safe-area-inset-left, 0px));
  padding-inline-end: max(calc(var(--inline-space) + 1vw), env(safe-area-inset-right, 0px));
}

/* Keep the editable line and 44px controls on the same baseline. The reference
   negative button margins were sized for its smaller desktop icon buttons. */
.composer .composer__input {
  --input-padding: 4px 4px 4px 12px;
  border-radius: 27px;

  > .flex {
    column-gap: 4px;
  }

  .btn:not(.avatar) {
    block-size: 44px;
    inline-size: 44px;
    margin: 0;

    &:last-child {
      margin-inline-end: 0;
    }
  }

  .composer__attachment-btn,
  .composer__rich-text-btn {
    --btn-background: transparent;
  }

  @media (prefers-color-scheme: dark) {
    background-color: var(--color-message-bg);
  }
}

.composer__input-hint {
  margin-block-end: 11px;
}

/* Pasted drafts scroll within the editor instead of pushing history off-screen. */
.composer lexxy-editor .lexxy-editor__content {
  min-block-size: 44px;
  padding-block: 10px;
  max-block-size: min(30dvh, 12rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  font-size: max(16px, 1em);
}

/* A placeholder should remain one line on narrow phones. */
.composer .lexxy-editor__content::before {
  inset-inline: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.composer__input-hint,
.composer__context-btn {
  .composer:has(.composer__input:focus-within) & {
    @media (max-width: 100ch) {
      display: none;
    }
  }
}

/* Attachments */
.composer__attachment-btn,
.composer__rich-text-btn {
  --hover-filter: brightness(0.85);

  @media (any-hover: hover) {
    &:where(:not(:active):hover) {
      filter: var(--hover-filter);
      box-shadow: none;
    }
  }
}

/* Pending attachments */
.composer__filelist {
  --row-gap: var(--block-space-half);

  &:not(:empty) {
    padding-block-end: var(--block-space-half);
  }
}

.composer__file {
  --aspect-ratio: 5/4;
  --btn-border-radius: 1em;
  --thumbnail-size: 15ch;

  aspect-ratio: var(--aspect-ratio);
  inline-size: var(--thumbnail-size);
}

:is(img, span):is(.composer__file-thumbnail) {
  aspect-ratio: var(--aspect-ratio);
  block-size: auto;
  border-radius: var(--btn-border-radius);
  border: 1px solid var(--color-border-darker);
  inline-size: var(--thumbnail-size);
  object-fit: cover;
}

.composer__file-thumbnail--common {
  background: url("/assets/common-file-text-9043d980.svg") no-repeat center;
  background-size: 55%;
}

.composer__file-caption {
  --icon-size: 1.3em;

  &::after {
    content: "";
    block-size: var(--icon-size);
    inline-size: var(--icon-size);
    background: url("/assets/remove-circle-384c618c.svg") no-repeat center;
    margin-inline: 0.5em -0.5em;
    flex-shrink: 0;
  }

  @media (prefers-color-scheme: dark) {
    &::after {
      filter: invert(100%);
    }
  }
}

/* Rich text */
.composer__rich-text-btn {
  display: none;

  img {
    inline-size: 1.7em;
  }
}

@media (min-width: 100ch) and (any-hover: hover) and (pointer: fine) {
  .composer__rich-text-btn {
    display: inline-flex;
  }

  .composer--rich-text {
    lexxy-toolbar {
      display: block;
    }

    lexxy-editor.input {
      margin-block-start: var(--block-space-half);
    }
  }

  .composer--edit lexxy-toolbar {
    border-block-end: 1px solid var(--color-border);
    margin-inline: -0.8em;
    padding-inline: 0.3em;
    padding-block-end: 0.5em;
  }
}

/* Typing indicator */
.typing-indicator {
  inset-block-start: var(--indicator-position, 0.15rem);
  inset-inline-start: var(--block-space);
  opacity: var(--indicator-opacity, 0);
  position: absolute;
  transition: inset-block-start 300ms ease,
              opacity 300ms ease;

  .sidebar & {
    @media (min-width: 100ch) {
      margin-inline-start: 2vw;
    }
  }

  &.typing-indicator--active {
    --indicator-position: 0.15rem;
    --indicator-opacity: 1;
  }
}

.typing-indicator__author {
  line-height: 1;
  padding-inline-start: 1.5em;

  &.spinner {
    display: none;

    .typing-indicator--active & {
      display: block;
    }
  }
}

.composer__input {
  .composer__rich-text-btn,
  label:has(input[type="file"]) {
    cursor: pointer;
  }
}