.room-stream {
  flex: none;
  inline-size: min(100%, 72rem, calc(88.89dvh - var(--navbar-height) - var(--footer-height)));
  margin-inline: auto;
  padding: var(--space-block-half) calc(var(--inline-space) + 1vw);
}

body.sidebar.stream-room { --sidebar-width: 0vw; }

.stream-room {

  #sidebar { display: none; }

  #main-content {
    display: grid;
    grid-template-columns: minmax(0, 1.9fr) minmax(20rem, 0.9fr);
    grid-template-rows: auto minmax(0, 1fr) min-content;
    overflow: hidden;
  }

  .room-stream {
    grid-column: 1;
    grid-row: 1;
    inline-size: 100%;
    align-self: stretch;
    display: flex;
    flex-direction: column;
    max-block-size: none;
    padding-block-end: 0;
  }

  .room-stream__viewport {
    flex: 1;
    min-block-size: 0;
    max-block-size: none;
  }

  .stream-description {
    grid-column: 1;
    grid-row: 2 / 4;
    align-self: stretch;
    min-block-size: 0;
    overflow-y: auto;
  }

  #message-area { display: contents; }

  .messages {
    grid-column: 2;
    grid-row: 1 / 3;
    min-block-size: 0;
    overflow-x: hidden;
    padding: var(--space-block) var(--space-inline-half);
    border-inline-start: 1px solid var(--color-border-subtle);
    row-gap: 0.35rem;
  }

  #footer {
    grid-column: 2;
    grid-row: 3;
    border-inline-start: 1px solid var(--color-border-subtle);
  }

  .message {
    --content-padding-block: 0.3rem;
    --content-padding-inline: 0.55rem;
    --message-column-gap: 0.4rem;

    grid-auto-columns: 1.6rem minmax(0, 1fr);
    grid-template-areas:
      "sep sep"
      "avatar body";
    padding-inline: 0;
  }

  .message--me {
    grid-auto-columns: 1.6rem minmax(0, 1fr);
    grid-template-areas:
      "sep sep"
      "avatar body";

    :is(.message__body, .message__meta, .message__heading) { justify-self: start; }

    :is(.message__meta, .message__heading) {
      flex-direction: row;
      justify-content: start;
    }

    .message__body { flex-direction: row; }
    .message__meta { padding-inline: 0 calc(var(--btn-size) / 2); }
    .message__avatar { margin-inline: 0; }
    .message__actions { justify-content: start; }
  }

  .message__avatar { --avatar-size: 1.6rem; }
  .message__body {
    min-inline-size: 0;
    max-inline-size: 100%;
    overflow-wrap: anywhere;
  }
  .message__body-content {
    inline-size: auto;
    min-inline-size: 0;
    font-size: 0.9rem;
  }
  .boosts,
  .boosts > * { min-inline-size: 0; }
  .message__permalink { display: none; }
  .message + .message--threaded { margin-block-start: 0; }
  .message__day-separator { margin-block: var(--space-block-half); }

  /* The chat column is a scroll container. Keep menus inside its inline edge
     instead of centering half of them beneath the adjacent stream player. */
  .message__actions-menu {
    inset-inline-start: 0;
    z-index: 4;
    transform: none;
    transform-origin: top left;

    &::before,
    &::after {
      inset-inline-start: calc(var(--btn-size) / 2);
    }

    .popup-orientation-top & { transform-origin: bottom left; }
  }
}

.stream-description {
  margin: var(--space-block-half) calc(var(--inline-space) + 1vw);
  padding: var(--space-block-half) var(--space-inline);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-medium);
  background: var(--color-surface-secondary);
}

.stream-description__close,
.room-stream__description-trigger,
.stream-description--popover { display: none; }

.stream-description__content > :first-child,
.stream-description__empty { margin-block-start: 0; }
.stream-description__content > :last-child,
.stream-description__empty { margin-block-end: 0; }

.stream-description__content,
.stream-description__empty,
.stream-description__content :is(p, ul, ol, li, blockquote, pre) {
  font-size: 14px !important;
}

.stream-description__content :is(h1, h2, h3, h4, h5, h6) {
  font-size: 15px !important;
}

.stream-viewers__trigger {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  min-block-size: var(--control-size);
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-surface-overlay) 92%, transparent);
  color: var(--color-text-primary);
  cursor: pointer;
  list-style: none;

  &::-webkit-details-marker { display: none; }
  &:hover { background: var(--color-surface-hover); }
}

.stream-viewers__indicator {
  inline-size: 0.55rem;
  block-size: 0.55rem;
  border-radius: var(--radius-round);
  background: var(--color-success);
}

.stream-viewers__popup {
  display: none;
  position: absolute;
  inset-block-start: calc(100% + 0.45rem);
  inset-inline-end: 0;
  z-index: 10;
  inline-size: min(18rem, calc(100vw - var(--space-inline-double)));
  padding: 0.5rem;
  border-radius: var(--radius-medium);
  background: var(--color-surface-overlay);

  .stream-viewers__menu[open] & { display: block; }
}

.stream-viewers__heading {
  margin: 0;
  padding: 0.5rem;
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

.stream-viewers__list {
  display: grid;
  gap: 0.15rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.stream-viewers__person {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem;
  border-radius: var(--radius-small);
  color: var(--color-text-primary);
  text-decoration: none;

  &:hover { background: var(--color-surface-hover); }
}

.stream-viewers__avatar { --avatar-size: 2rem; }
.stream-viewers__empty { margin: 0; padding: 0.5rem; }

.room-stream__info {
  display: flex;
  align-items: center;
  gap: var(--space-inline);
  min-block-size: var(--control-size);
  padding-block: var(--space-block-half);
}

.room-stream__title {
  flex: 1;
  font-size: 1.15rem;
}
.room-stream__status {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-small);

  &.channel-live-badge {
    padding: 0.28em 0.6em;
    border-radius: var(--radius-pill);
    color: white;
    font-size: 0.8rem;
  }
  &.channel-live-badge--offline { color: var(--color-text-disabled); }
}

.room-stream__viewport {
  display: grid;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-secondary);

  > * { grid-area: 1 / 1; }
}

.room-stream__frame,
.room-stream__player,
.room-stream__poster-layer,
.room-stream__poster {
  inline-size: 100%;
  block-size: 100%;
  border: 0;
}

.room-stream__player {
  position: relative;
  display: block;
  overflow: hidden;
  background: #000;
  color: white;

  media-outlet,
  media-outlet video {
    display: block;
    inline-size: 100%;
    block-size: 100%;
  }

  media-outlet video { object-fit: contain; }
}

.room-stream__controls {
  position: absolute;
  inset: auto 0 0;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.65rem var(--space-inline);
  background: linear-gradient(transparent, rgb(0 0 0 / 0.85));
  opacity: 0;
  transition: opacity 150ms ease;
}

.room-stream__player:is(:hover, :focus-within, [data-paused], [data-user-idle="false"]) .room-stream__controls { opacity: 1; }

.room-stream__control {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 3rem;
  block-size: 3rem;
  padding: 0;
  border-radius: var(--radius-small);
  cursor: pointer;

  &:hover,
  &:focus-visible { background: rgb(255 255 255 / 0.18); }

  shadow-root,
  [slot] { display: none; }

  svg {
    inline-size: 1.55rem;
    block-size: 1.55rem;
  }
}

media-play-button[data-paused]:not([data-ended]) [slot="play"],
media-play-button:not([data-paused]) [slot="pause"],
media-play-button[data-ended] [slot="replay"],
media-mute-button[data-volume="muted"] [slot="unmute"],
media-mute-button:not([data-volume="muted"]) [slot="mute"],
media-pip-button:not([data-pip]) [slot="enter"],
media-pip-button[data-pip] [slot="exit"],
media-fullscreen-button:not([data-fullscreen]) [slot="enter"],
media-fullscreen-button[data-fullscreen] [slot="exit"] { display: inline; }

.room-stream__controls-spacer { flex: 1; }

.room-stream__volume-control {
  display: flex;
  align-items: center;
  min-block-size: 3rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid rgb(255 255 255 / 0.28);
  border-radius: var(--radius-pill);
  background: rgb(255 255 255 / 0.1);
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 0.08);
}

.room-stream__volume {
  --volume-percent: 100%;

  appearance: none;
  inline-size: 8rem;
  block-size: 1.8rem;
  margin: 0;
  border: 0;
  outline: 0;
  background: transparent;
  cursor: pointer;

  &::-webkit-slider-runnable-track {
    block-size: 0.45rem;
    border-radius: var(--radius-pill);
    background: linear-gradient(to right,
      var(--color-primary) 0 var(--volume-percent),
      rgb(255 255 255 / 0.24) var(--volume-percent) 100%);
    box-shadow: inset 0 1px 2px rgb(0 0 0 / 0.45);
  }

  &::-webkit-slider-thumb {
    appearance: none;
    inline-size: 1.25rem;
    block-size: 1.25rem;
    margin-block-start: -0.4rem;
    border: 2px solid white;
    border-radius: var(--radius-round);
    background: var(--color-primary);
    box-shadow: 0 1px 4px rgb(0 0 0 / 0.65);
  }

  &::-moz-range-track {
    block-size: 0.45rem;
    border-radius: var(--radius-pill);
    background: rgb(255 255 255 / 0.24);
    box-shadow: inset 0 1px 2px rgb(0 0 0 / 0.45);
  }

  &::-moz-range-progress {
    block-size: 0.45rem;
    border-radius: var(--radius-pill);
    background: var(--color-primary);
  }

  &::-moz-range-thumb {
    inline-size: 1.1rem;
    block-size: 1.1rem;
    border: 2px solid white;
    border-radius: var(--radius-round);
    background: var(--color-primary);
    box-shadow: 0 1px 4px rgb(0 0 0 / 0.65);
  }

  &:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 3px rgb(255 255 255 / 0.35); }
  &:focus-visible::-moz-range-thumb { box-shadow: 0 0 0 3px rgb(255 255 255 / 0.35); }
}

.room-stream__sound {
  z-index: 5;
  place-self: center;
  border-color: white;
  background: rgb(0 0 0 / 0.78);
  color: white;

  &[hidden] { display: none; }
}

.room-stream__viewport:is([data-state="offline"], [data-state="unauthorized"], [data-state="error"]) {
  .room-stream__controls,
  .room-stream__sound { display: none; }
}

.room-stream__viewport:not([data-state="live"]) .room-stream__sound { display: none; }

.room-stream__poster-layer {
  z-index: 1;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #000;
  pointer-events: none;
}

.room-stream__poster {
  object-fit: contain;
}

.room-stream__viewport[data-state="live"] { border-color: var(--color-success); }
.room-stream__viewport[data-state="unauthorized"],
.room-stream__viewport[data-state="error"] { border-style: dashed; }

.stream-settings__poster img {
  display: block;
  max-inline-size: 16rem;
  aspect-ratio: 16 / 9;
  margin-inline: auto;
  object-fit: cover;
}

.stream-settings__description-editor {
  trix-toolbar {
    display: block;
    position: static;
    padding: 0.4rem;
    border: 1px solid var(--color-input-border);
    border-block-end: 0;
    border-radius: var(--radius-medium) var(--radius-medium) 0 0;
    background: var(--color-surface-secondary);
  }

  trix-editor.input {
    min-block-size: 14rem;
    inline-size: 100%;
    margin: 0;
    border-start-start-radius: 0;
    border-start-end-radius: 0;
  }
}

@media (max-width: 100ch) {
  .stream-room #main-content {
    display: flex;
    overflow: auto;
  }

  .stream-room .room-stream { max-block-size: none; }
  .stream-room .room-stream__viewport { max-block-size: none; }
  .stream-room .stream-description--inline { display: none; }
  .stream-room .stream-description--popover:popover-open {
    display: block;
    position: fixed;
    inset: var(--space-block) var(--space-inline);
    inline-size: auto;
    max-inline-size: 42rem;
    max-block-size: calc(100dvh - var(--space-block-double));
    margin: auto;
    overflow: auto;
    border-color: var(--color-border);
    background: var(--color-surface-overlay);
  }
  .stream-room .stream-description--popover::backdrop { background: rgb(0 0 0 / 0.65); }
  .stream-description__close {
    display: block;
    position: sticky;
    inset-block-start: 0;
    z-index: 1;
    margin-inline-start: auto;
  }
  .room-stream__description-trigger { display: inline-flex; }
  .stream-room .messages {
    min-block-size: 45dvh;
    padding-block-start: var(--space-block);
    border-inline-start: 0;
  }
  .stream-room #footer { border-inline-start: 0; }

  .room-stream {
    inline-size: 100%;
    padding-block-start: var(--navbar-height);
  }
}