.internal-messages-shell {
  min-height: calc(100vh - 132px);
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 14px;
}

.internal-sidebar,
.internal-chat-pane {
  min-height: 0;
  overflow: hidden;
}

.internal-sidebar {
  display: grid;
  grid-template-rows: auto auto auto auto minmax(0, 1fr) auto;
  gap: 10px;
  padding: 14px;
}

.internal-sidebar-head,
.internal-chat-head,
.internal-head-actions,
.internal-contact-row,
.internal-contact-row div {
  display: flex;
  align-items: center;
  gap: 10px;
}

.internal-sidebar-head,
.internal-chat-head {
  justify-content: space-between;
}

.internal-sidebar-head h2,
.internal-chat-head h2 {
  margin: 0;
  font-size: 19px;
}

.internal-chat-head span {
  color: var(--muted);
  font-size: 13px;
}

.internal-compose-box {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, .035);
  overflow: hidden;
}

.internal-compose-box summary,
.internal-edit-popover summary {
  cursor: pointer;
  padding: 10px 12px;
  color: #dbe9f6;
  font-weight: 800;
}

.internal-mini-form {
  display: grid;
  gap: 8px;
  padding: 0 10px 10px;
}

.internal-list {
  min-height: 0;
  overflow: auto;
  display: grid;
  align-content: start;
  gap: 6px;
  padding-right: 2px;
}

.internal-chat-row {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 10px;
  border-radius: 14px;
  color: var(--text);
  text-decoration: none;
}

.internal-chat-row:hover,
.internal-chat-row.active {
  background: rgba(127, 183, 255, .11);
  color: #fff;
}

.internal-avatar {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: #061019;
  font-weight: 900;
}

.internal-row-body {
  min-width: 0;
}

.internal-row-body strong,
.internal-row-body small {
  display: block;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.internal-row-body small,
.internal-empty,
.internal-start p {
  color: var(--muted);
}

.internal-chat-row b {
  display: grid;
  place-items: center;
  min-width: 24px;
  height: 24px;
  padding: 0 7px;
  border-radius: 999px;
  background: var(--danger);
  color: #fff;
  font-size: 12px;
}

.internal-contacts {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.internal-contacts h3 {
  margin: 0 0 8px;
  font-size: 15px;
}

.internal-contact-row {
  justify-content: space-between;
  padding: 7px 0;
}

.internal-icon-btn {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, .05);
  color: #dbe9f6;
}

.internal-chat-pane {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  padding: 0;
}

.internal-chat-head {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}

.internal-thread {
  min-height: 0;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px;
  background: rgba(9, 19, 29, .42);
}

.internal-message {
  display: flex;
  max-width: 76%;
}

.internal-message.out {
  align-self: flex-end;
}

.internal-message.in {
  align-self: flex-start;
}

.internal-bubble {
  position: relative;
  min-width: 120px;
  padding: 10px 12px 18px;
  border-radius: 16px;
  background: rgba(23, 39, 52, .96);
  box-shadow: 0 10px 26px rgba(0, 0, 0, .18);
}

.internal-message.out .internal-bubble {
  background: linear-gradient(135deg, rgba(68, 215, 182, .34), rgba(79, 157, 255, .24));
}

.internal-bubble strong {
  display: block;
  margin-bottom: 3px;
  color: #9fd0ff;
  font-size: 12px;
}

.internal-bubble p {
  margin: 0;
  overflow-wrap: anywhere;
  line-height: 1.42;
}

.internal-bubble > span {
  position: absolute;
  right: 10px;
  bottom: 4px;
  color: rgba(219, 233, 246, .68);
  font-size: 11px;
}

.internal-deleted {
  color: var(--muted);
  font-style: italic;
}

.internal-message-actions {
  margin-top: 8px;
}

.internal-message-actions summary {
  cursor: pointer;
  color: #dbe9f6;
}

.internal-message-actions form {
  display: grid;
  gap: 6px;
  margin-top: 6px;
}

.internal-send-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  padding: 12px;
  border-top: 1px solid var(--line);
}

.internal-send-form textarea {
  min-height: 46px;
  resize: vertical;
}

.internal-start,
.internal-empty-state {
  display: grid;
  place-items: center;
  align-content: center;
  min-height: 100%;
  text-align: center;
  color: var(--muted);
}

.internal-start h2 {
  color: var(--text);
}

.internal-edit-popover {
  position: relative;
}

.internal-edit-popover form {
  position: absolute;
  right: 0;
  top: 42px;
  z-index: 5;
  width: 280px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #101b27;
  box-shadow: 0 18px 48px rgba(0, 0, 0, .4);
}

html[data-theme="light"] .internal-compose-box,
html[data-theme="light"] .internal-icon-btn {
  background: rgba(20, 48, 70, .045);
}

html[data-theme="light"] .internal-thread {
  background: rgba(20, 48, 70, .04);
}

html[data-theme="light"] .internal-bubble {
  background: #fff;
}

html[data-theme="light"] .internal-sidebar,
html[data-theme="light"] .internal-chat-pane,
html[data-theme="light"] .internal-contact-row,
html[data-theme="light"] .internal-start {
  color: #13283a;
}

html[data-theme="light"] .internal-sidebar-head h2,
html[data-theme="light"] .internal-chat-head h2,
html[data-theme="light"] .internal-contacts h3,
html[data-theme="light"] .internal-start h2,
html[data-theme="light"] .internal-compose-box summary,
html[data-theme="light"] .internal-edit-popover summary {
  color: #0b1722;
}

html[data-theme="light"] .internal-compose-box summary {
  background: linear-gradient(135deg, rgba(8, 127, 109, .08), rgba(23, 104, 184, .055));
}

html[data-theme="light"] .internal-chat-row {
  color: #163044;
}

html[data-theme="light"] .internal-chat-row:hover,
html[data-theme="light"] .internal-chat-row.active {
  background: rgba(23, 104, 184, .09);
  color: #07121c;
}

html[data-theme="light"] .internal-row-body small,
html[data-theme="light"] .internal-empty,
html[data-theme="light"] .internal-start p,
html[data-theme="light"] .internal-chat-head span,
html[data-theme="light"] .internal-empty-state {
  color: #526a7d;
}

html[data-theme="light"] .internal-icon-btn {
  color: #163044;
  border-color: rgba(20, 48, 70, .18);
}

html[data-theme="light"] .internal-icon-btn:hover {
  color: #07121c;
  background: rgba(23, 104, 184, .1);
}

html[data-theme="light"] .internal-bubble,
html[data-theme="light"] .internal-bubble p {
  color: #13283a;
}

html[data-theme="light"] .internal-bubble strong {
  color: #1768b8;
}

html[data-theme="light"] .internal-bubble > span,
html[data-theme="light"] .internal-message-actions summary {
  color: #526a7d;
}

@media (max-width: 980px) {
  .internal-messages-shell {
    grid-template-columns: 1fr;
  }

  .internal-sidebar,
  .internal-chat-pane {
    min-height: 520px;
  }
}

@media (max-width: 640px) {
  .internal-chat-head,
  .internal-head-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .internal-message {
    max-width: 92%;
  }

  .internal-send-form {
    grid-template-columns: 1fr;
  }
}