.message-row.is-user .message-stack {
  align-items: flex-end;
}

.message-bubble {
  min-width: 0;
  max-width: 100%;
  padding: 10px 12px;
  border-radius: 16px;
  border-bottom-left-radius: 6px;
  background: #fff;
  border: 1px solid rgba(222, 223, 220, 0.8);
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}

.message-row.is-user .message-bubble {
  color: #fff;
  background: #1f2937;
  border-color: #1f2937;
  border-bottom-left-radius: 16px;
  border-bottom-right-radius: 6px;
}

.message-row.is-activity .message-bubble {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 92%;
  color: #58606b;
  background: #eeefeb;
}

.message-row.is-activity .activity-bubble {
  display: block;
  min-width: 172px;
  max-width: min(92%, 420px);
  padding: 8px 10px;
  color: #4f5661;
  background: #f0f1ee;
}

.activity-bubble.is-failed {
  color: var(--danger);
  background: #fff1ef;
  border-color: rgba(194, 65, 58, 0.22);
}

.message-actions {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  max-width: 100%;
  margin-top: 4px;
  padding: 0;
  color: #7b838f;
  font-size: 12px;
  line-height: 16px;
}

.message-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-width: 44px;
  min-height: 44px;
  padding: 0 6px;
  border: 0;
  color: inherit;
  background: transparent;
}

.message-action:hover,
.message-action:focus-visible,
.message-action:active {
  color: #4b5563;
}

.message-action.is-speaking {
  color: var(--accent);
}

.message-action.is-delete:hover,
.message-action.is-delete:focus-visible,
.message-action.is-delete:active {
  color: var(--danger);
}

@media (hover: hover) {
  .message-actions {
    opacity: 0.66;
    transition: opacity 140ms ease, color 140ms ease;
  }

  .message-row:hover .message-actions,
  .message-actions:focus-within {
    opacity: 1;
  }
}

.activity-summary {
  display: flex;
  align-items: center;
  gap: 7px;
  width: 100%;
  padding: 0;
  border: 0;
  color: inherit;
  background: transparent;
  text-align: left;
}

.activity-summary span {
  min-width: 0;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px;
  line-height: 18px;
}

.activity-detail {
  margin-top: 6px;
  color: #8f3d36;
  font-size: 12px;
  line-height: 16px;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.activity-steps {
  display: grid;
  gap: 6px;
  margin-top: 8px;
  padding-top: 7px;
  border-top: 1px solid rgba(210, 213, 208, 0.72);
}

.activity-step {
  display: grid;
  grid-template-columns: 8px minmax(0, 1fr);
  align-items: center;
  column-gap: 7px;
  color: #69717c;
  font-size: 12px;
  line-height: 16px;
}

.activity-step span:last-child {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.activity-step-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: #9aa3ad;
}

.activity-step.is-running .activity-step-dot,
.activity-step.is-queued .activity-step-dot {
  background: #3b82f6;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.12);
}

.activity-step.is-completed .activity-step-dot {
  background: #12b981;
}

.activity-step.is-failed .activity-step-dot {
  background: var(--danger);
}

.activity-item {
  margin-top: 8px;
}

.activity-item strong {
  display: block;
  font-size: 12px;
  line-height: 16px;
}

.activity-item ul {
  margin: 5px 0 0;
  padding-left: 18px;
  font-size: 11px;
}

.activity-item em {
  display: block;
  margin-top: 5px;
  color: var(--danger);
  font-style: normal;
  font-size: 11px;
}

.message-content {
  max-width: 100%;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
  font-size: 14px;
  line-height: 1.55;
}

.message-content a {
  color: #1758d6;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.12em;
}

.message-row.is-user .message-content a {
  color: #cfe3ff;
}

[data-theme="dark"] .message-content a {
  color: #7ab7ff;
}

[data-theme="dark"] .message-row.is-user .message-content a {
  color: #d8e8ff;
}

.message-content pre,
.message-content code {
  max-width: 100%;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.message-image-link {
  display: block;
  width: min(100%, calc(100vw - 56px), 360px);
  max-width: 100%;
  margin: 8px 0;
  padding: 0;
  border: 0;
  border-radius: 8px;
  color: inherit;
  background: #eef0ed;
  text-align: left;
  overflow: hidden;
  cursor: zoom-in;
  -webkit-touch-callout: none;
}

.message-image {
  display: block;
  width: 100%;
  height: auto;
  max-height: min(54vh, 520px);
  object-fit: contain;
}

.message-image-link.is-failed {
  display: grid;
  min-height: 132px;
  place-items: center;
  border: 1px dashed rgba(194, 65, 58, 0.28);
  color: var(--danger);
  background: #fff4f2;
}

.message-image-link.is-failed img {
  display: none;
}

.image-error {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}

.image-error span {
  color: #174eb8;
}

.image-lightbox {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: calc(env(safe-area-inset-top, 0px) + 10px) 12px calc(env(safe-area-inset-bottom, 0px) + 12px);
  background: rgba(8, 10, 13, 0.94);
  backdrop-filter: blur(10px);
  overscroll-behavior: contain;
  touch-action: pan-x pan-y pinch-zoom;
}