.messenger-loading {
  display: grid;
  place-items: center;
  gap: 8px;
  min-height: 420px;
  padding: 32px;
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 14px;
  background: #fff;
  color: #475569;
  text-align: center;
}

.messenger-loading b {
  color: #0f172a;
  font-size: 18px;
}

.messenger-shell {
  display: grid;
  gap: 10px;
  width: 100%;
  min-width: 0;
  max-width: 1440px;
  margin: 0 auto;
}

.messenger-layout {
  position: relative;
  display: grid;
  grid-template-columns:
    minmax(260px, 0.82fr)
    minmax(420px, 1.9fr)
    minmax(280px, 0.92fr);
  width: 100%;
  min-width: 0;
  height: clamp(580px, calc(100dvh - 152px), 860px);
  overflow: hidden;
  border: 1px solid #dbe3ee;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.07);
}

.messenger-list-pane,
.messenger-conversation-pane,
.messenger-details {
  box-sizing: border-box;
  min-width: 0;
  min-height: 0;
  background: #fff;
}

.messenger-list-pane {
  display: grid;
  grid-template-rows: auto auto auto minmax(0, 1fr);
  gap: 10px;
  padding: 14px;
  overflow: hidden;
  border-right: 1px solid #e2e8f0;
  background: #f8fafc;
}

.messenger-list-head,
.messenger-conversation-head,
.messenger-details > header,
.messenger-gallery-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-width: 0;
}

.messenger-list-head h2,
.messenger-conversation-head h2,
.messenger-details h2,
.messenger-details h3,
.messenger-action-card h3 {
  margin: 0;
  overflow-wrap: anywhere;
}

.messenger-list-head .eyebrow,
.messenger-details .eyebrow {
  color: #6366f1;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.messenger-count,
.messenger-unread,
.messenger-gallery-head > span {
  display: inline-grid;
  place-items: center;
  min-width: 26px;
  min-height: 26px;
  padding: 2px 7px;
  border-radius: 999px;
  background: #4f46e5;
  color: #fff;
  font-size: 11px;
  font-weight: 900;
}

.messenger-tabs,
.messenger-gallery-tabs {
  display: flex;
  gap: 5px;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: thin;
}

.messenger-tabs button,
.messenger-gallery-tabs button {
  flex: 0 0 auto;
  min-height: 34px;
  padding: 6px 9px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: #64748b;
  font-size: 11px;
  font-weight: 800;
}

.messenger-tabs button:hover,
.messenger-gallery-tabs button:hover {
  background: #eef2ff;
  color: #3730a3;
}

.messenger-tabs button.active,
.messenger-gallery-tabs button.active {
  border-color: #c7d2fe;
  background: #eef2ff;
  color: #3730a3;
}

.messenger-search,
.messenger-search input,
.messenger-gallery input[type="search"] {
  box-sizing: border-box;
  width: 100%;
  min-width: 0;
}

.messenger-search input,
.messenger-gallery input[type="search"] {
  min-height: 40px;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  background: #fff;
}

#messenger-list-region,
.messenger-conversation-list {
  min-width: 0;
  min-height: 0;
}

#messenger-list-region {
  overflow: auto;
}

.messenger-conversation-list {
  display: grid;
  align-content: start;
  gap: 6px;
}

.messenger-conversation {
  box-sizing: border-box;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  gap: 9px;
  align-items: center;
  width: 100%;
  min-width: 0;
  min-height: 66px;
  padding: 9px;
  border: 1px solid transparent;
  border-radius: 11px;
  background: transparent;
  color: #0f172a;
  text-align: left;
}

.messenger-conversation:hover {
  border-color: #dbeafe;
  background: #fff;
}

.messenger-conversation.active {
  border-color: #c7d2fe;
  background: #eef2ff;
  box-shadow: inset 3px 0 #4f46e5;
}

.messenger-conversation-avatar {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  overflow: hidden;
  border-radius: 999px;
  background: #0f172a;
  color: #fff;
  font-size: 11px;
  font-weight: 900;
}

.messenger-conversation-copy,
.messenger-conversation-copy > span:first-child {
  display: flex;
  min-width: 0;
}

.messenger-conversation-copy {
  flex-direction: column;
  gap: 3px;
}

.messenger-conversation-copy > span:first-child {
  align-items: baseline;
  justify-content: space-between;
  gap: 6px;
}

.messenger-conversation-copy b,
.messenger-conversation-copy small,
.messenger-conversation-copy time {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.messenger-conversation-copy small,
.messenger-conversation-copy time,
.messenger-conversation-meta {
  color: #64748b;
  font-size: 10px;
}

.messenger-conversation-meta {
  align-self: flex-start;
  padding: 2px 6px;
  border-radius: 999px;
  background: #e2e8f0;
  font-weight: 800;
}

.messenger-list-state,
.messenger-unavailable,
.messenger-message-state,
.messenger-no-conversation > div {
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 7px;
  min-height: 180px;
  padding: 20px;
  color: #64748b;
  text-align: center;
}

.messenger-list-state b,
.messenger-unavailable b,
.messenger-message-state b,
.messenger-no-conversation b {
  color: #334155;
}

.messenger-unavailable {
  align-content: start;
  justify-items: start;
  min-height: 0;
  border: 1px dashed #f59e0b;
  border-radius: 10px;
  background: #fff7ed;
  color: #9a3412;
  text-align: left;
}

.messenger-unavailable p {
  margin: 0;
}

.messenger-conversation-pane {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  overflow: hidden;
}

.messenger-conversation-head {
  min-height: 68px;
  padding: 11px 14px;
  border-bottom: 1px solid #e2e8f0;
}

.messenger-conversation-head > div {
  flex: 1;
  min-width: 0;
}

.messenger-conversation-head h2 {
  font-size: 17px;
}

.messenger-conversation-head p {
  margin: 2px 0 0;
  overflow: hidden;
  color: #64748b;
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.messenger-mobile-back {
  display: none;
}

.messenger-boundary {
  flex: 0 0 auto;
  padding: 5px 8px;
  border: 1px solid #fed7aa;
  border-radius: 999px;
  background: #fff7ed;
  color: #9a3412;
  font-size: 10px;
  font-weight: 900;
}

.messenger-boundary.internal {
  border-color: #bbf7d0;
  background: #f0fdf4;
  color: #166534;
}

.messenger-external-warning,
.messenger-source-state,
.messenger-media-capability {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid #fed7aa;
  background: #fff7ed;
  color: #9a3412;
  font-size: 11px;
  flex-wrap: wrap;
}

.messenger-source-state {
  border-radius: 10px;
}

.messenger-source-state span,
.messenger-external-warning span,
.messenger-media-capability span {
  flex: 1;
}

.messenger-media-capability small {
  flex: 1 0 100%;
  line-height: 1.4;
}

.messenger-media-capability button {
  margin-left: auto;
}

.messenger-source-error,
.messenger-media-capability.blocked {
  border-color: #fecaca;
  background: #fef2f2;
  color: #991b1b;
}

.messenger-source-stale,
.messenger-source-partial {
  border-color: #fed7aa;
  background: #fff7ed;
  color: #9a3412;
}

.messenger-message-stream {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  min-height: 0;
  padding: 14px;
  overflow: auto;
  overscroll-behavior: contain;
  background:
    linear-gradient(rgba(248, 250, 252, 0.94), rgba(248, 250, 252, 0.94)),
    radial-gradient(circle at 20px 20px, #cbd5e1 1px, transparent 1px);
  background-size:
    auto,
    24px 24px;
}

.messenger-message {
  box-sizing: border-box;
  display: grid;
  align-self: flex-start;
  gap: 7px;
  width: min(78%, 720px);
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid #dbe3ee;
  border-radius: 13px 13px 13px 4px;
  background: #fff;
  box-shadow: 0 2px 7px rgba(15, 23, 42, 0.04);
}

.messenger-message.own {
  align-self: flex-end;
  border-color: #c7d2fe;
  border-radius: 13px 13px 4px;
  background: #eef2ff;
}

.messenger-message-system {
  align-self: center;
  width: min(90%, 800px);
  border-color: #cbd5e1;
  border-radius: 10px;
  background: #f1f5f9;
}

.messenger-message-action_card,
.messenger-message-approval {
  width: min(94%, 860px);
  border-color: #c7d2fe;
  background: #fff;
}

.messenger-message > header {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}

.messenger-message > header time {
  margin-left: auto;
  color: #64748b;
  font-size: 10px;
}

.messenger-participant {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-width: 0;
  color: #334155;
  font-size: 11px;
}

.messenger-participant > span:first-child {
  display: inline-grid;
  place-items: center;
  width: 23px;
  height: 23px;
  flex: 0 0 23px;
  border-radius: 999px;
  background: #e2e8f0;
  color: #334155;
  font-size: 8px;
  font-weight: 900;
}

.messenger-participant-ai_agent > span:first-child {
  background: #ede9fe;
  color: #5b21b6;
}

.messenger-participant-external_guest > span:first-child,
.messenger-participant-company > span:first-child {
  background: #ffedd5;
  color: #9a3412;
}

.messenger-participant small {
  color: #64748b;
  font-size: 9px;
}

.messenger-ai-label,
.messenger-system-label {
  padding: 2px 6px;
  border-radius: 999px;
  background: #ede9fe;
  color: #5b21b6;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.messenger-system-label {
  display: inline-flex;
  align-self: flex-start;
  background: #e2e8f0;
  color: #475569;
}

.messenger-priority {
  display: inline-flex;
  align-items: center;
  padding: 2px 7px;
  border: 1px solid #cbd5e1;
  border-radius: 999px;
  background: #f8fafc;
  color: #475569;
  font-size: 9px;
  font-weight: 900;
}

.messenger-priority-important {
  border-color: #fde68a;
  background: #fffbeb;
  color: #92400e;
}

.messenger-priority-urgent {
  border-color: #fdba74;
  background: #fff7ed;
  color: #9a3412;
}

.messenger-priority-critical {
  border-color: #fca5a5;
  background: #fef2f2;
  color: #991b1b;
}

.messenger-message-body,
.messenger-message-body > p {
  min-width: 0;
}

.messenger-message-body {
  display: grid;
  gap: 8px;
}

.messenger-message-body > p {
  margin: 0;
  color: #1e293b;
  font-size: 14px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.messenger-message blockquote {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 6px 8px;
  overflow: hidden;
  border-left: 3px solid #818cf8;
  background: rgba(255, 255, 255, 0.62);
  color: #64748b;
  font-size: 11px;
  text-overflow: ellipsis;
}

.messenger-message blockquote span {
  color: #4338ca;
  font-size: 9px;
  font-weight: 900;
  text-transform: uppercase;
}

.messenger-mentions,
.messenger-entities,
.messenger-message-media {
  display: flex;
  gap: 6px;
  min-width: 0;
  flex-wrap: wrap;
}

.messenger-entity {
  display: grid;
  justify-items: start;
  gap: 1px;
  min-width: 130px;
  max-width: 100%;
  min-height: 48px;
  padding: 7px 9px;
  border: 1px solid #bfdbfe;
  border-radius: 9px;
  background: #eff6ff;
  color: #1e3a8a;
  text-align: left;
}

.messenger-entity small {
  color: #64748b;
  font-size: 9px;
}

.messenger-entity-disabled {
  opacity: 0.75;
}

.messenger-ai-provenance,
.messenger-delivery {
  display: flex;
  align-items: baseline;
  gap: 6px;
  color: #64748b;
  font-size: 9px;
}

.messenger-ai-provenance span {
  color: #5b21b6;
  font-weight: 900;
}

.messenger-delivery {
  justify-content: flex-end;
  min-height: 0;
}

.messenger-action-card {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.messenger-action-card > header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.messenger-action-card > header span:first-child {
  color: #6366f1;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.messenger-action-card > p {
  margin: 0;
  color: #475569;
}

.messenger-action-evidence {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.messenger-action-field {
  display: grid;
  gap: 2px;
  min-width: 0;
  padding: 7px;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: #f8fafc;
}

.messenger-action-field span {
  color: #64748b;
  font-size: 9px;
  font-weight: 800;
  text-transform: uppercase;
}

.messenger-action-field b {
  color: #334155;
  font-size: 11px;
  overflow-wrap: anywhere;
}

.messenger-action-field.missing {
  border-color: #fed7aa;
  background: #fff7ed;
}

.messenger-action-buttons {
  display: flex;
  align-items: center;
  gap: 7px;
  flex-wrap: wrap;
}

.messenger-action-result {
  padding: 9px 11px;
  border: 1px solid #bfdbfe;
  border-radius: 9px;
  background: #eff6ff;
  color: #1e3a8a;
  font-size: 12px;
  font-weight: 700;
}

.messenger-action-blocked {
  color: #9a3412;
  font-size: 10px;
  font-weight: 800;
}

.messenger-message-media {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
}

.messenger-media-item {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  min-width: 0;
  padding: 7px;
  border: 1px solid #dbe3ee;
  border-radius: 9px;
  background: #fff;
}

.messenger-media-preview,
.messenger-media-preview img,
.messenger-media-preview video {
  width: 72px;
  height: 60px;
  overflow: hidden;
  border-radius: 7px;
  object-fit: cover;
}

.messenger-media-preview audio {
  width: min(210px, 100%);
}

.messenger-media-placeholder {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  background: #e2e8f0;
  color: #475569;
  font-size: 20px;
  font-weight: 900;
}

.messenger-media-blocked,
.messenger-media-quarantined,
.messenger-media-rejected {
  border-color: #fecaca;
  background: #fef2f2;
}

.messenger-media-pending,
.messenger-media-processing {
  border-color: #fed7aa;
  background: #fff7ed;
}

.messenger-media-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.messenger-media-copy b,
.messenger-media-copy small,
.messenger-media-copy span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.messenger-media-copy small,
.messenger-media-copy span {
  color: #64748b;
  font-size: 9px;
}

.messenger-composer {
  display: grid;
  gap: 7px;
  min-width: 0;
  padding: 10px 12px;
  border-top: 1px solid #e2e8f0;
  background: #fff;
}

.messenger-compose-tools,
.messenger-compose-bottom {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  flex-wrap: wrap;
}

.messenger-compose-tools .button-link {
  min-height: 30px;
  padding: 5px 8px;
  font-size: 10px;
}

.messenger-selected-mentions {
  display: flex;
  gap: 5px;
  min-width: 0;
  overflow-x: auto;
}

.messenger-selected-mentions > span {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  border: 1px solid #c7d2fe;
  border-radius: 999px;
  background: #eef2ff;
}

.messenger-selected-mentions .messenger-participant {
  padding-left: 5px;
}

.messenger-selected-mentions button {
  min-width: 30px;
  padding: 3px;
}

.messenger-mention-picker,
.messenger-compose-bottom > label,
.messenger-caption {
  display: flex;
  align-items: center;
  gap: 5px;
  min-width: 0;
  color: #64748b;
  font-size: 10px;
  font-weight: 800;
}

.messenger-mention-picker select,
.messenger-compose-bottom select {
  width: auto;
  min-width: 135px;
  min-height: 34px;
}

.messenger-caption.hidden {
  display: none;
}

.messenger-caption input,
.messenger-message-input textarea {
  box-sizing: border-box;
  width: 100%;
  min-width: 0;
}

.messenger-message-input textarea {
  min-height: 58px;
  max-height: 180px;
  resize: vertical;
}

.messenger-compose-safety {
  flex: 1;
  min-width: 180px;
  color: #64748b;
  font-size: 9px;
  line-height: 1.35;
}

.messenger-compose-bottom > button {
  margin-left: auto;
}

.messenger-send-status:empty {
  display: none;
}

.messenger-send-status .error,
.messenger-send-status .ok {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 9px;
  border-radius: 8px;
  font-size: 10px;
}

.messenger-send-status .error span,
.messenger-send-status .ok span {
  flex: 1;
}

.messenger-selected-files {
  display: grid;
  gap: 5px;
}

.messenger-selected-files > article {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr) auto;
  gap: 7px;
  align-items: center;
  min-width: 0;
  padding: 5px 7px;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: #f8fafc;
}

.messenger-selected-files > article > span {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 7px;
  background: #e2e8f0;
}

.messenger-selected-preview {
  overflow: hidden;
}

.messenger-selected-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.messenger-selected-files > article > div {
  display: grid;
  min-width: 0;
}

.messenger-selected-files b,
.messenger-selected-files small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.messenger-selected-files .messenger-media-error {
  color: #b91c1c;
  font-size: 9px;
  overflow-wrap: anywhere;
}

.messenger-selected-files small {
  color: #64748b;
  font-size: 9px;
}

.messenger-media-capability.ready {
  border-color: #bbf7d0;
  background: #f0fdf4;
  color: #166534;
}

.messenger-details {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  gap: 12px;
  padding: 14px;
  overflow: auto;
  border-left: 1px solid #e2e8f0;
  background: #f8fafc;
}

.messenger-details > header > button {
  display: none;
}

.messenger-participants-panel,
.messenger-gallery {
  display: grid;
  align-content: start;
  gap: 8px;
  min-width: 0;
}

.messenger-participants-panel > div {
  display: grid;
  gap: 6px;
}

.messenger-participants-panel .messenger-participant {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  padding: 6px;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: #fff;
}

.messenger-participants-panel .messenger-participant small {
  grid-column: 2;
}

.messenger-gallery-list {
  display: grid;
  align-content: start;
  gap: 7px;
  min-width: 0;
  overflow: auto;
}

.messenger-gallery-list .messenger-media-item {
  grid-template-columns: 52px minmax(0, 1fr);
}

.messenger-gallery-list .messenger-media-preview,
.messenger-gallery-list .messenger-media-preview img,
.messenger-gallery-list .messenger-media-preview video {
  width: 52px;
  height: 48px;
}

.messenger-error-state {
  color: #991b1b;
}

.messenger-unavailable-shell .messenger-list-pane {
  opacity: 0.78;
}

.messenger-list-actions,
.messenger-safety-actions,
.messenger-participant-safety,
.messenger-safety-dialog-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.messenger-list-actions,
.messenger-participant-safety,
.messenger-safety-actions,
.messenger-safety-dialog-actions {
  justify-content: flex-end;
}

.messenger-list-actions > button,
.messenger-safety-actions > button,
.messenger-participant-safety > button {
  min-height: 30px;
  padding: 4px 7px;
  font-size: 10px;
}

.messenger-safety-actions {
  padding-top: 5px;
  border-top: 1px solid #e2e8f0;
}

.messenger-participants-panel > div > article {
  display: grid;
  gap: 5px;
  padding: 5px;
  border: 1px solid #e2e8f0;
  border-radius: 9px;
  background: #fff;
}

.messenger-participants-panel > div > article .messenger-participant {
  padding: 2px;
  border: 0;
}

.messenger-safety-panel {
  position: fixed;
  z-index: 90;
  top: 12px;
  right: 12px;
  bottom: 12px;
  display: grid;
  align-content: start;
  gap: 14px;
  box-sizing: border-box;
  width: min(560px, calc(100vw - 24px));
  padding: 16px;
  overflow: auto;
  border: 1px solid var(--border, #cbd5e1);
  border-radius: 16px;
  background: var(--surface, #fff);
  color: var(--text, #0f172a);
  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.28);
}

.messenger-safety-panel > header,
.messenger-safety-dialog > header,
.messenger-deletion-card > header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.messenger-safety-panel h2,
.messenger-safety-panel h3,
.messenger-safety-dialog h2 {
  margin: 0;
}

.messenger-safety-panel > section {
  display: grid;
  gap: 9px;
  padding: 12px;
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 12px;
  background: var(--surface-soft, #f8fafc);
}

.messenger-safety-banner,
.messenger-safety-notice,
.messenger-safety-partial,
.messenger-safety-state,
.messenger-retention-warning {
  display: grid;
  gap: 4px;
  padding: 10px 12px;
  border: 1px solid #fed7aa;
  border-radius: 10px;
  background: #fff7ed;
  color: #9a3412;
  font-size: 12px;
}

.messenger-safety-notice {
  border-color: #bbf7d0;
  background: #f0fdf4;
  color: #166534;
}

.messenger-safety-error,
.messenger-safety-state.error {
  border-color: #fecaca;
  background: #fef2f2;
  color: #991b1b;
}

.messenger-safety-form,
.messenger-safety-fields,
.messenger-safety-list,
.messenger-deletion-card,
.messenger-deletion-card dl {
  display: grid;
  gap: 8px;
}

.messenger-safety-fields,
.messenger-deletion-card dl {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.messenger-safety-fields label,
.messenger-safety-dialog label {
  display: grid;
  gap: 4px;
  min-width: 0;
  color: var(--muted, #64748b);
  font-size: 11px;
  font-weight: 800;
}

.messenger-safety-fields select,
.messenger-safety-dialog select,
.messenger-safety-dialog textarea {
  box-sizing: border-box;
  width: 100%;
  min-width: 0;
  min-height: 40px;
}

.messenger-safety-list article {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-width: 0;
  padding: 9px;
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 9px;
  background: var(--surface, #fff);
}

.messenger-safety-list article > div,
.messenger-deletion-card > header > div,
.messenger-deletion-card dl > div {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.messenger-safety-list small,
.messenger-deletion-card p,
.messenger-deletion-empty p {
  color: var(--muted, #64748b);
  font-size: 11px;
  line-height: 1.45;
}

.messenger-deletion-card > header {
  flex-wrap: wrap;
}

.messenger-deletion-card span,
.messenger-deletion-card dt {
  color: var(--muted, #64748b);
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
}

.messenger-deletion-card dl {
  margin: 0;
}

.messenger-deletion-card dl > div {
  padding: 8px;
  border-radius: 8px;
  background: var(--surface, #fff);
}

.messenger-deletion-card dd {
  margin: 0;
  overflow-wrap: anywhere;
  font-size: 12px;
}

.messenger-safety-refresh {
  justify-self: end;
}

.messenger-safety-modal {
  position: fixed;
  z-index: 110;
  inset: 0;
  display: grid;
  place-items: center;
  box-sizing: border-box;
  padding: 16px;
  background: rgba(15, 23, 42, 0.58);
}

.messenger-safety-dialog {
  display: grid;
  gap: 14px;
  box-sizing: border-box;
  width: min(500px, 100%);
  max-height: calc(100dvh - 32px);
  padding: 18px;
  overflow: auto;
  border: 1px solid var(--border, #cbd5e1);
  border-radius: 16px;
  background: var(--surface, #fff);
  color: var(--text, #0f172a);
  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.36);
}

.messenger-safety-dialog p,
.messenger-retention-warning p {
  margin: 0;
  line-height: 1.5;
}

.messenger-retention-warning {
  border-color: #fecaca;
  background: #fef2f2;
  color: #991b1b;
}

.messenger-shell .sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (min-width: 768px) and (max-width: 1199px) {
  .messenger-layout {
    grid-template-columns: minmax(250px, 0.78fr) minmax(0, 2fr);
  }

  .messenger-details {
    display: none;
  }

  .messenger-shell.inspector-open .messenger-details {
    position: fixed;
    z-index: 70;
    top: 16px;
    right: 16px;
    bottom: 16px;
    display: grid;
    width: min(420px, calc(100vw - 32px));
    border: 1px solid #cbd5e1;
    border-radius: 14px;
    box-shadow: 0 24px 80px rgba(15, 23, 42, 0.24);
  }

  .messenger-shell.inspector-open .messenger-details > header > button {
    display: inline-flex;
  }
}

@media (max-width: 767px) {
  .messenger-shell button,
  .messenger-shell input,
  .messenger-shell select,
  .messenger-shell textarea,
  .messenger-shell .button-link {
    min-height: 44px;
    touch-action: manipulation;
  }

  .messenger-safety-panel {
    inset: 0;
    width: 100%;
    height: 100dvh;
    padding: 12px;
    border: 0;
    border-radius: 0;
  }

  .messenger-safety-fields,
  .messenger-deletion-card dl {
    grid-template-columns: minmax(0, 1fr);
  }

  .messenger-safety-list article {
    display: grid;
    align-items: stretch;
  }

  .messenger-safety-modal {
    padding: 8px;
  }

  .messenger-safety-dialog {
    max-height: calc(100dvh - 16px);
    padding: 14px;
    border-radius: 12px;
  }

  .messenger-safety-dialog-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .messenger-safety-dialog-actions > button,
  .messenger-safety-list article > button {
    width: 100%;
  }

  .messenger-layout {
    display: block;
    height: max(520px, calc(100dvh - 128px));
    border-radius: 12px;
  }

  .messenger-list-pane,
  .messenger-conversation-pane {
    width: 100%;
    height: 100%;
  }

  .messenger-conversation-pane {
    display: none;
  }

  .messenger-shell.is-conversation-open .messenger-list-pane {
    display: none;
  }

  .messenger-shell.is-conversation-open .messenger-conversation-pane {
    display: grid;
  }

  .messenger-mobile-back {
    display: inline-flex;
  }

  .messenger-conversation-head {
    min-height: 62px;
    padding: 8px;
  }

  .messenger-conversation-head > [data-messenger-toggle-inspector] {
    min-width: 44px;
    width: 44px;
    overflow: hidden;
    color: transparent;
  }

  .messenger-conversation-head > [data-messenger-toggle-inspector]::before {
    content: "ⓘ";
    color: #334155;
    font-size: 16px;
  }

  .messenger-boundary {
    display: none;
  }

  .messenger-message-stream {
    padding: 9px;
  }

  .messenger-message,
  .messenger-message-system,
  .messenger-message-action_card,
  .messenger-message-approval {
    width: min(92%, 100%);
  }

  .messenger-message-action_card,
  .messenger-message-approval,
  .messenger-message-system {
    width: 100%;
  }

  .messenger-action-evidence {
    grid-template-columns: 1fr;
  }

  .messenger-action-buttons,
  .messenger-compose-bottom,
  .messenger-compose-tools {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .messenger-action-buttons > *,
  .messenger-compose-tools > *,
  .messenger-compose-bottom > * {
    box-sizing: border-box;
    width: 100%;
    min-width: 0;
    max-width: 100%;
  }

  .messenger-mention-picker,
  .messenger-compose-safety,
  .messenger-compose-bottom > button {
    grid-column: 1 / -1;
  }

  .messenger-compose-bottom > button {
    margin-left: 0;
  }

  .messenger-mention-picker select,
  .messenger-compose-bottom select {
    flex: 1;
    width: 100%;
    min-width: 0;
  }

  .messenger-details {
    display: none;
  }

  .messenger-shell.inspector-open .messenger-details {
    position: fixed;
    z-index: 80;
    inset: 0;
    display: grid;
    width: 100%;
    height: 100dvh;
    padding: 14px;
    border: 0;
    background: #f8fafc;
  }

  .messenger-shell.inspector-open .messenger-details > header > button {
    display: inline-flex;
  }

  .messenger-media-item {
    grid-template-columns: 54px minmax(0, 1fr);
  }

  .messenger-media-preview,
  .messenger-media-preview img,
  .messenger-media-preview video {
    width: 54px;
    height: 52px;
  }

  .messenger-media-item > .button-link {
    grid-column: 1 / -1;
  }
}

@media (max-width: 360px) {
  .messenger-list-pane,
  .messenger-composer {
    padding: 8px;
  }

  .messenger-tabs button {
    padding-inline: 8px;
  }

  .messenger-conversation {
    grid-template-columns: 38px minmax(0, 1fr) auto;
    padding: 7px;
  }

  .messenger-conversation-avatar {
    width: 38px;
    height: 38px;
  }

  .messenger-message-body > p {
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .messenger-shell *,
  .messenger-shell *::before,
  .messenger-shell *::after {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }
}