/*
 * Composer, toolbar, emoji popover and attachment row (spec "Composer",
 * ADR 0001). Ported from the mockup's .cmp, .bar, .emo and .att rules.
 * Tokens only. The Post button is the flip reveal from buttons.css.
 */
.composer {
  --composer-soft: color-mix(in srgb, var(--ink), transparent 93%);
  position: relative;
  border-radius: var(--r-card);
  background: var(--tile-2);
  box-shadow: inset 0 0 0 1px var(--line);
  padding: 10px 10px 8px 12px;
  display: flex;
  flex-direction: column;
  transition: box-shadow .3s, background-color .3s;
}
.composer.composer-open {
  background: var(--tile);
  box-shadow: inset 0 0 0 1px var(--line-2), var(--shadow-float);
}

.composer-top { display: flex; gap: 12px; align-items: flex-start; }
.composer-top .hex-avatar { flex: none; }
.composer .composer-label {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.composer textarea {
  flex: 1;
  min-width: 0;
  margin: 0;
  border: 0;
  outline: 0;
  resize: none;
  background: transparent;
  font: inherit;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
  padding: 12px 2px;
  height: 50px;
  transition: height .3s var(--ease);
}
.composer.composer-open textarea { height: 92px; }
.composer textarea::placeholder { color: var(--ink-3); }
.composer textarea:disabled { color: var(--ink-2); }

/* Toolbar: photo, video, emoji | bulleted list ... Ctrl + Enter, Post. */
.composer-bar {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-top: 6px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}
.composer-tool {
  appearance: none;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  width: 40px;
  height: 40px;
  border-radius: var(--r-ctl);
  display: inline-grid;
  place-items: center;
  color: var(--ink-2);
  cursor: pointer;
  flex: none;
  transition: background-color .2s, color .2s, transform .15s;
}
.composer-tool svg { width: 20px; height: 20px; }
.composer-tool:hover:not(:disabled),
.composer-tool.composer-tool-on { background: var(--composer-soft); color: var(--ink); }
.composer-tool:active:not(:disabled) { transform: scale(.9); }
.composer-tool:disabled { cursor: not-allowed; color: var(--ink-3); background: transparent; }
.composer-file {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  border: 0;
}
.composer-sep { width: 1px; height: 20px; background: var(--line-2); margin: 0 6px; flex: none; }
.composer-spacer { flex: 1; }
.composer-kbd { font-size: 11.5px; color: var(--ink-3); margin-right: 10px; white-space: nowrap; }
.composer-kbd b {
  font-weight: 700;
  color: var(--ink-2);
  padding: 1px 6px;
  border-radius: 6px;
  background: var(--tile-2);
  box-shadow: inset 0 0 0 1px var(--line);
}

/* Emoji: a frosted popover with 32 frequent emoji. */
.composer-emoji-wrap { position: relative; }
.composer-emoji {
  position: absolute;
  z-index: 30;
  top: calc(100% + 8px);
  left: -8px;
  width: 320px;
  padding: 10px;
  background: var(--glass);
  -webkit-backdrop-filter: blur(20px) saturate(1.7);
  backdrop-filter: blur(20px) saturate(1.7);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  box-shadow: var(--shadow-pop);
  animation: composer-pop .24s cubic-bezier(.2,.9,.3,1.25) both;
}
.composer-eyebrow {
  display: block;
  padding: 2px 6px 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.composer-emoji-grid { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 2px; }
.composer-emoji-grid button {
  appearance: none;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  height: 36px;
  border-radius: 10px;
  font-family: inherit;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  transition: transform .15s cubic-bezier(.2,.9,.3,1.4), background-color .15s;
}
.composer-emoji-grid button:hover { background: var(--composer-soft); transform: scale(1.2); }

/* Attachment row: thumbnail, name, type and size, progress, remove. */
.composer-att {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 6px 0 2px;
  padding: 8px;
  border-radius: 14px;
  background: var(--tile-2);
  box-shadow: inset 0 0 0 1px var(--line);
  animation: composer-rise .35s var(--ease) both;
}
.composer-att.composer-att-indent { margin-left: 58px; }
.composer-thumb {
  position: relative;
  width: 56px;
  height: 56px;
  border-radius: 10px;
  flex: none;
  overflow: hidden;
  background: var(--tile-3);
}
.composer-thumb img,
.composer-thumb video { display: block; width: 100%; height: 100%; object-fit: cover; }
.composer-thumb svg {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 20px;
  height: 20px;
  color: var(--on-accent);
  filter: drop-shadow(0 1px 3px var(--accent-deep));
}
.composer-att-text { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 6px; }
.composer-att-text strong {
  font-size: 13px;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.composer-att-text span { font-size: 12px; color: var(--ink-3); }
.composer-prog { height: 3px; border-radius: 3px; background: var(--tile-3); overflow: hidden; }
.composer-prog i {
  display: block;
  height: 100%;
  background: var(--accent);
  transform-origin: left;
  animation: composer-load 1.6s var(--ease) both;
}
/* While posting the upload has no byte count, so the bar sweeps. */
.composer-prog.composer-prog-busy i { width: 40%; animation: composer-sweep 1.1s ease-in-out infinite; }

.composer .error { margin: 8px 0 0; }

/* The flip Post button keeps its own size inside the toolbar. */
.composer-bar .composer-post { flex: none; }

@keyframes composer-pop { from { opacity: 0; transform: translateY(-6px) scale(.96); } to { opacity: 1; transform: none; } }
@keyframes composer-rise { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes composer-load { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@keyframes composer-sweep { from { transform: translateX(-100%); } to { transform: translateX(250%); } }

@media (prefers-reduced-motion: reduce) {
  .composer,
  .composer textarea,
  .composer-tool,
  .composer-emoji-grid button { transition: none !important; }
  .composer-emoji,
  .composer-att,
  .composer-prog i { animation: none !important; }
}

/* Publish failure, above the toolbar. */
.composer-error { margin: 0 0 4px; padding: 10px 12px; border: 1px solid var(--accent); border-radius: 8px; color: var(--danger); background: var(--accent-soft); font-size: 14px; }