/**
 * Chat UI Contract
 *
 * Loaded after the legacy chat styles. This is the final authority for
 * bubble geometry, media surfaces, search result grids, and message actions.
 * Keep new cross-message rules here instead of scattering overrides.
 */

.chat-messages {
  --chat-row-max: min(100%, 1120px);
  --chat-text-max: min(720px, 70%);
  --chat-media-max: min(720px, 70%);
  --chat-search-max: min(1040px, calc(100vw - 150px));
  --chat-search-1-max: min(680px, calc(100vw - 150px));
  --chat-search-2-max: min(780px, calc(100vw - 150px));
  --chat-search-3-max: min(940px, calc(100vw - 150px));
  --chat-wide-panel-max: min(780px, calc(100vw - 150px));
  --chat-dialog-max: min(980px, calc(100vw - 150px));
  --chat-pill-panel-max: min(520px, calc(100vw - 150px));
  --chat-surface-bg: rgba(22, 22, 24, 0.92);
  --chat-surface-strong-bg: rgba(16, 16, 18, 0.92);
  --chat-user-bg: rgba(255, 255, 255, 0.045);
  --chat-border: rgba(255, 255, 255, 0.1);
  --chat-border-hover: rgba(255, 255, 255, 0.16);
  --chat-radius: 14px;
  --chat-radius-media: 12px;
  --chat-radius-tight: 8px;
  --chat-pad-block: 12px;
  --chat-pad-inline: 14px;
  --chat-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
  --chat-shadow-strong: 0 14px 38px rgba(0, 0, 0, 0.32);
  --chat-action-size: 30px;
  --chat-action-gap: 6px;
}

.chat-messages .message,
.chat-messages .message *,
.chat-messages .message *::before,
.chat-messages .message *::after {
  box-sizing: border-box;
}

.chat-messages .message {
  width: 100%;
  max-width: var(--chat-row-max);
}

.chat-messages .message.assistant {
  align-items: flex-end;
  gap: 8px;
}

.chat-messages .message.assistant.search-reference-results {
  max-width: none;
}

.chat-messages .message-content {
  min-width: 0;
  position: relative;
}

.chat-messages .message.assistant .message-content:not(.comparison-content) {
  max-width: var(--chat-text-max);
  padding: var(--chat-pad-block) var(--chat-pad-inline);
  border: 1px solid var(--chat-border);
  border-radius: var(--chat-radius) var(--chat-radius) var(--chat-radius) 6px;
  background: var(--chat-surface-bg);
  box-shadow: var(--chat-shadow);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.5;
  overflow: visible;
}

.chat-messages .message.assistant .message-content:not(.comparison-content):hover {
  border-color: var(--chat-border-hover);
}

.chat-messages .message.user .message-content {
  max-width: min(560px, 70%);
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: calc(var(--chat-radius) + 2px) calc(var(--chat-radius) + 2px) var(--chat-radius-tight) calc(var(--chat-radius) + 2px);
  background: var(--chat-user-bg);
  overflow: visible;
}

.chat-messages .message.assistant .message-content:has(
  .chat-img-wrapper,
  .chat-model-wrapper,
  .chat-model-wrapper-clean,
  model-viewer,
  .chat-pointcloud-container,
  .chat-pointcloud-wrapper,
  .plasma-placeholder,
  .media-container,
  .image-grid
):not(.comparison-content) {
  max-width: var(--chat-media-max);
  padding: 0;
  border-color: transparent;
  background: transparent;
  box-shadow: none;
}

.chat-messages .message.assistant[data-pointcloud="true"],
.chat-messages .message.assistant:has(.chat-pointcloud-container) {
  width: 100%;
  max-width: var(--chat-row-max) !important;
}

.chat-messages .message.assistant[data-pointcloud="true"] .message-content,
.chat-messages .message.assistant .message-content:has(.chat-pointcloud-container) {
  width: auto !important;
  max-width: var(--chat-media-max) !important;
  padding: 0 !important;
  border: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  overflow: visible !important;
}

.chat-messages .message.assistant.placeholder-message .message-content:has(.plasma-placeholder),
.chat-messages .message.assistant .message-content:has(.chat-img-wrapper.generation-placeholder) {
  width: auto !important;
  max-width: var(--chat-media-max) !important;
  padding: 0 !important;
  border: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  overflow: visible !important;
}

.chat-messages .message.assistant .message-content:not(.comparison-content) > .media-container,
.chat-messages .message.assistant .message-content:not(.comparison-content) > .image-grid {
  display: block;
  width: 100%;
}

.chat-messages .message.assistant .message-content:not(.comparison-content) > .media-container + .message-text,
.chat-messages .message.assistant .message-content:not(.comparison-content) > .image-grid + .message-text {
  margin-top: 10px;
}

.chat-messages .message.assistant .message-content:not(.comparison-content) > .message-text + .media-container,
.chat-messages .message.assistant .message-content:not(.comparison-content) > .message-text + .image-grid {
  margin-top: 12px;
}

.chat-messages .message.assistant .message-content.nowrap-text {
  width: max-content;
  max-width: min(90%, var(--chat-text-max));
}

.chat-messages .message.assistant .message-content.nowrap-text .message-text {
  width: max-content;
  max-width: none;
  white-space: nowrap;
}

.chat-messages .message.assistant:has(.model-option-pills-container) {
  overflow: visible !important;
}

.chat-messages .message.assistant:has(.model-option-pills-container) .message-content {
  width: fit-content !important;
  min-width: min(360px, calc(100vw - 72px)) !important;
  max-width: var(--chat-pill-panel-max) !important;
  padding: var(--chat-pad-block) var(--chat-pad-inline) !important;
  border: 1px solid var(--chat-border) !important;
  border-radius: var(--chat-radius) var(--chat-radius) var(--chat-radius) 6px !important;
  background: var(--chat-surface-bg) !important;
  box-shadow: var(--chat-shadow) !important;
  overflow: visible !important;
}

.chat-messages .message.assistant .model-option-pills-container {
  width: 100%;
  max-width: 480px;
  min-width: min(320px, 100%);
}

.chat-messages .message.assistant.realism-options-message .message-content {
  max-width: var(--chat-wide-panel-max);
  padding: 0;
  border: 1px solid var(--chat-border);
  border-radius: var(--chat-radius-media);
  background: var(--chat-surface-strong-bg);
  box-shadow: var(--chat-shadow-strong);
  overflow: hidden;
}

.chat-messages .message.assistant .message-content:has(.cfv-review) {
  width: 100%;
  min-width: min(860px, var(--chat-dialog-max));
  max-width: var(--chat-dialog-max);
}

.chat-messages .message.assistant.search-reference-results .message-content,
.chat-messages .message.assistant.search-reference-results .message-content:has(.image-grid) {
  width: var(--chat-search-max);
  max-width: var(--chat-search-max);
  padding: 9px;
  border: 1px solid var(--chat-border);
  border-radius: var(--chat-radius-media);
  background: var(--chat-surface-strong-bg);
  box-shadow: var(--chat-shadow-strong);
}

.chat-messages .message.assistant.search-reference-results.image-count-1 .message-content,
.chat-messages .message.assistant.search-reference-results.image-count-1 .message-content:has(.image-grid) {
  width: var(--chat-search-1-max);
  max-width: var(--chat-search-1-max);
}

.chat-messages .message.assistant.search-reference-results.image-count-2 .message-content,
.chat-messages .message.assistant.search-reference-results.image-count-2 .message-content:has(.image-grid) {
  width: var(--chat-search-2-max);
  max-width: var(--chat-search-2-max);
}

.chat-messages .message.assistant.search-reference-results.image-count-3 .message-content,
.chat-messages .message.assistant.search-reference-results.image-count-3 .message-content:has(.image-grid) {
  width: var(--chat-search-3-max);
  max-width: var(--chat-search-3-max);
}

.chat-messages .message.assistant.search-reference-results .image-grid.search-reference-grid {
  display: grid;
  width: 100% !important;
  max-width: none;
  gap: 8px;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr));
}

.chat-messages .message.assistant.search-reference-results.image-count-1 .image-grid.search-reference-grid {
  grid-template-columns: 1fr;
}

.chat-messages .message.assistant.search-reference-results.image-count-2 .image-grid.search-reference-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.chat-messages .message.assistant.search-reference-results.image-count-3 .image-grid.search-reference-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.chat-messages .message.assistant.search-reference-results .mediabubble-container {
  min-width: 0;
  margin: 0;
  padding: 0;
}

.chat-messages .message.assistant.search-reference-results .image-grid .chat-img-wrapper {
  width: 100% !important;
  height: auto !important;
  max-width: none;
  aspect-ratio: 4 / 3;
  border-radius: var(--chat-radius-tight);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.035);
}

.chat-messages .message.assistant.search-reference-results .search-reference-caption {
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: 8px;
  z-index: 2;
  display: block;
  padding: 5px 7px;
  border-radius: 6px;
  color: rgba(255, 255, 255, 0.9);
  background: linear-gradient(180deg, rgba(12, 12, 14, 0.52), rgba(12, 12, 14, 0.78));
  font-size: 11px;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.chat-messages .message.assistant.search-reference-results .chat-img-wrapper:hover .search-reference-caption,
.chat-messages .message.assistant.search-reference-results .chat-img-wrapper:focus-within .search-reference-caption {
  opacity: 1;
  transform: translateY(0);
}

.chat-messages .message.assistant.search-reference-results .chat-img-wrapper img,
.chat-messages .message.assistant.search-reference-results .chat-img-wrapper video {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  object-fit: cover !important;
}

.chat-messages .message.assistant.search-reference-results .message-text {
  margin-top: 8px;
  max-width: 100%;
  color: rgba(255, 255, 255, 0.66);
  font-size: 12px;
  line-height: 1.35;
}

.chat-messages .message.assistant.search-reference-results .message-text strong {
  color: rgba(255, 255, 255, 0.82);
  font-weight: 600;
}

.chat-messages .message.assistant.search-reference-results .message-text:empty {
  display: none;
}

.chat-messages .message.assistant > .message-actions {
  display: none !important;
}

.chat-messages .message.assistant > .message-actions.text-copy-external {
  order: 3;
  display: flex !important;
  flex-direction: row !important;
  align-items: center;
  justify-content: center;
  align-self: flex-end;
  width: fit-content !important;
  margin: 0 0 6px 2px !important;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
  opacity: 0 !important;
  visibility: visible !important;
  pointer-events: none;
  transform: translateX(-2px);
  transition: opacity 0.16s ease, transform 0.16s ease;
}

.chat-messages .message.assistant:hover > .message-actions.text-copy-external,
.chat-messages .message.assistant:focus-within > .message-actions.text-copy-external,
.chat-messages .message.assistant > .message-actions.text-copy-external:hover {
  opacity: 1 !important;
  pointer-events: auto;
  transform: translateX(0);
}

.chat-messages .message .message-content > .message-actions,
.chat-messages .message .message-content > .message-action-toolbar,
.chat-messages .comparison-bubble-message .message-actions {
  order: 20;
  display: flex !important;
  flex-direction: row !important;
  align-items: center;
  justify-content: flex-end;
  align-self: flex-end;
  gap: var(--chat-action-gap);
  width: fit-content !important;
  max-width: 100%;
  margin: 8px 0 0 auto !important;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
  opacity: 0 !important;
  visibility: visible !important;
  pointer-events: none;
  transform: translateY(-2px);
  animation: none !important;
  transition: opacity 0.16s ease, transform 0.16s ease;
}

.chat-messages .message:hover .message-content > .message-actions,
.chat-messages .message:hover .message-content > .message-action-toolbar,
.chat-messages .message .message-content:hover > .message-actions,
.chat-messages .message .message-content:hover > .message-action-toolbar,
.chat-messages .message .message-content:focus-within > .message-actions,
.chat-messages .message .message-content:focus-within > .message-action-toolbar,
.chat-messages .message .message-content > .message-actions:hover,
.chat-messages .message .message-content > .message-action-toolbar:hover,
.chat-messages .comparison-bubble-message:hover .message-actions,
.chat-messages .comparison-bubble-message .message-content:hover > .message-actions,
.chat-messages .comparison-bubble-message .message-content:focus-within > .message-actions {
  opacity: 1 !important;
  pointer-events: auto;
  transform: translateY(0);
}

.chat-messages .message .message-content > .media-feedback-overlay.message-feedback-toolbar {
  left: 0;
  bottom: 0;
  z-index: 22;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-2px);
  transition: opacity 0.16s ease, transform 0.16s ease;
}

.chat-messages .message:hover .message-content > .media-feedback-overlay.message-feedback-toolbar,
.chat-messages .message .message-content:hover > .media-feedback-overlay.message-feedback-toolbar,
.chat-messages .message .message-content:focus-within > .media-feedback-overlay.message-feedback-toolbar,
.chat-messages .message .message-content > .media-feedback-overlay.message-feedback-toolbar:hover {
  opacity: 1 !important;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.chat-messages .message-action-btn.action-pill {
  width: var(--chat-action-size) !important;
  min-width: var(--chat-action-size) !important;
  height: var(--chat-action-size) !important;
  min-height: var(--chat-action-size) !important;
}

.chat-messages .message-action-btn.action-pill img,
.chat-messages .message-action-icon {
  pointer-events: none !important;
  user-select: none;
}

.chat-messages .comparison-bubble-message .message-content.comparison-content,
.chat-messages .message.assistant .message-content.comparison-content {
  border-radius: var(--chat-radius-media);
}

/* 3D model option dialogs follow the same restrained bubble language as chat. */
.chat-messages .message.assistant:has(.model-option-pills-container) .message-content {
  min-width: min(420px, calc(100vw - 72px)) !important;
  padding: 13px !important;
}

.chat-messages .message.assistant .model-dialog-intro {
  margin: 0 34px 10px 0 !important;
  color: rgba(235, 238, 244, 0.86) !important;
  font-size: 13px !important;
  line-height: 1.4 !important;
  font-weight: 500 !important;
}

.chat-messages .message.assistant .model-option-pills-container {
  gap: 8px !important;
  max-width: 520px !important;
  margin-bottom: 10px !important;
}

.chat-messages .message.assistant .model-option-pills-container .upscale-rollup-pill,
.chat-messages .message.assistant .model-option-pills-container .upscale-rollup-pill:hover {
  transform: none !important;
}

.chat-messages .message.assistant .model-option-pills-container .pill-label,
.chat-messages .message.assistant .model-option-pills-container .upscale-rollup-pill:hover .pill-label,
.chat-messages .message.assistant .model-option-pills-container .upscale-rollup-pill.is-hovered .pill-label {
  text-shadow: none !important;
}

.chat-messages .message.assistant .model-option-pills-container .upscale-rollup-pill:hover .pill-label::after,
.chat-messages .message.assistant .model-option-pills-container .upscale-rollup-pill.is-hovered .pill-label::after {
  content: none !important;
  display: none !important;
}

.chat-messages .message.assistant .model-option-pills-container .upscale-rollup-pill:hover .pill-shell,
.chat-messages .message.assistant .model-option-pills-container .upscale-rollup-pill.is-hovered .pill-shell {
  background: rgba(255, 255, 255, 0.055) !important;
  border-color: rgba(255, 255, 255, 0.26) !important;
  box-shadow: none !important;
}

.chat-messages .message.assistant .model-option-pills-container .pill-tooltip {
  border-radius: var(--chat-radius-tight) !important;
  background: rgba(18, 19, 22, 0.96) !important;
  border-color: rgba(255, 255, 255, 0.14) !important;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.24) !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

.chat-messages .message.assistant .model-dialog-actions {
  display: flex !important;
  align-items: center !important;
  flex-wrap: wrap !important;
  gap: 8px !important;
  margin-top: 10px !important;
}

.chat-messages .message.assistant .model-credit-cost-display,
.chat-messages .message.assistant .model-execute-button,
.chat-messages .message.assistant .model-cancel-button {
  border-radius: var(--chat-radius-tight) !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

.chat-messages .message.assistant .model-execute-button,
.chat-messages .message.assistant .model-cancel-button {
  padding: 9px 13px !important;
  letter-spacing: 0 !important;
  transform: none !important;
}

.chat-messages .message.assistant .model-pill-new-chip {
  color: rgba(255, 255, 255, 0.78) !important;
  background: rgba(255, 255, 255, 0.08) !important;
  border: 1px solid rgba(255, 255, 255, 0.14) !important;
  box-shadow: none !important;
  text-shadow: none !important;
}

.chat-messages .message.assistant .model-input-preview-strip {
  margin-top: 10px !important;
  gap: 7px !important;
}

.chat-messages .message.assistant .model-input-thumb {
  width: 112px !important;
  height: 112px !important;
  min-width: 112px !important;
  min-height: 112px !important;
  border-radius: var(--chat-radius-tight) !important;
  box-shadow: none !important;
}

@media (max-width: 980px) {
  .chat-messages {
    --chat-text-max: min(720px, calc(100vw - 92px));
    --chat-media-max: min(720px, calc(100vw - 92px));
    --chat-search-max: calc(100vw - 92px);
    --chat-search-1-max: calc(100vw - 92px);
    --chat-search-2-max: calc(100vw - 92px);
    --chat-search-3-max: calc(100vw - 92px);
    --chat-wide-panel-max: calc(100vw - 92px);
    --chat-dialog-max: calc(100vw - 92px);
    --chat-pill-panel-max: calc(100vw - 92px);
  }

  .chat-messages .message.assistant.search-reference-results.image-count-3 .image-grid.search-reference-grid {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 190px), 1fr));
  }
}

@media (max-width: 768px) {
  .chat-messages {
    --chat-text-max: calc(100vw - 72px);
    --chat-media-max: calc(100vw - 72px);
    --chat-search-max: calc(100vw - 72px);
    --chat-search-1-max: calc(100vw - 72px);
    --chat-search-2-max: calc(100vw - 72px);
    --chat-search-3-max: calc(100vw - 72px);
    --chat-wide-panel-max: calc(100vw - 72px);
    --chat-dialog-max: calc(100vw - 72px);
    --chat-pill-panel-max: calc(100vw - 72px);
  }

  .chat-messages .message.user .message-content {
    max-width: 85%;
  }

  .chat-messages .message.assistant .message-content:not(.comparison-content) > .media-container + .message-text,
  .chat-messages .message.assistant .message-content:not(.comparison-content) > .image-grid + .message-text,
  .chat-messages .message.assistant .message-content:not(.comparison-content) > .message-text + .media-container,
  .chat-messages .message.assistant .message-content:not(.comparison-content) > .message-text + .image-grid {
    margin-top: 8px;
  }

  .chat-messages .message.assistant.search-reference-results .image-grid.search-reference-grid,
  .chat-messages .message.assistant.search-reference-results.image-count-2 .image-grid.search-reference-grid,
  .chat-messages .message.assistant.search-reference-results.image-count-3 .image-grid.search-reference-grid {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 150px), 1fr));
  }

  .chat-messages .message.assistant .message-content:has(.cfv-review) {
    min-width: min(420px, var(--chat-dialog-max));
  }

  .chat-messages .message.assistant.search-reference-results .search-reference-caption {
    opacity: 1;
    transform: none;
  }

  .chat-messages .message .message-content > .message-actions,
  .chat-messages .message .message-content > .message-action-toolbar,
  .chat-messages .comparison-bubble-message .message-actions,
  .chat-messages .message.assistant > .message-actions.text-copy-external {
    opacity: 1 !important;
    pointer-events: auto;
    transform: none;
  }

  .chat-messages .message .message-content > .media-feedback-overlay.message-feedback-toolbar {
    display: none !important;
  }
}

@media (prefers-contrast: high) {
  .chat-messages .message.assistant .message-content:not(.comparison-content) {
    border-color: #ffffff;
  }

  .chat-messages .message.user .message-content {
    border-color: transparent;
  }
}