/* Full-height, application-style chat layout. */
body:has(.chat-shell) {
  overflow-y: hidden;
}

.sidebar {
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--purple) transparent;
}

.sidebar::-webkit-scrollbar { width: 7px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { border-radius: 8px;background: linear-gradient(var(--blue),var(--purple)); }

.content:has(.chat-shell) {
  height: calc(100dvh - 75px);
  display: flex;
  flex-direction: column;
  padding-top: 18px;
  padding-bottom: 14px;
}

.content:has(.chat-shell) > .page-heading {
  flex: none;
  align-items: center;
  margin-bottom: 12px;
}

.content:has(.chat-shell) > .page-heading h1 {
  font-size: 24px;
}

.content:has(.chat-shell) > .page-heading p {
  margin-top: 2px;
}

.content:has(.chat-shell) > .chat-role-banner {
  flex: none;
  margin-bottom: 10px;
  padding: 9px 12px;
}

.content:has(.chat-shell) > .chat-role-banner > b {
  width: 30px;
  height: 30px;
}

.content:has(.chat-shell) > .chat-shell {
  min-height: 0;
  max-height: none;
  height: auto;
  flex: 1 1 0;
}

.chat-list,
.chat-messages {
  scrollbar-color: var(--purple) color-mix(in srgb,var(--purple) 10%,var(--surface));
  scrollbar-width: thin;
}

.chat-list::-webkit-scrollbar,
.chat-messages::-webkit-scrollbar {
  width: 10px;
}

.chat-list::-webkit-scrollbar-track,
.chat-messages::-webkit-scrollbar-track {
  background: color-mix(in srgb,var(--purple) 9%,var(--surface));
  border-radius: 10px;
}

.chat-list::-webkit-scrollbar-thumb,
.chat-messages::-webkit-scrollbar-thumb {
  border: 2px solid color-mix(in srgb,var(--purple) 9%,var(--surface));
  border-radius: 10px;
  background: linear-gradient(var(--blue),var(--purple));
}

.chat-message > div > span {
  position: relative;
}

.chat-header-actions {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-left: auto;
}

.clear-chat-button {
  padding: 7px 10px;
  border: 1px solid color-mix(in srgb,var(--red) 38%,var(--line));
  border-radius: 8px;
  background: color-mix(in srgb,var(--red) 8%,var(--surface));
  color: var(--red);
  font-size: 9px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .03em;
}

.clear-chat-button:hover:not(:disabled) {
  border-color: var(--red);
  background: var(--red);
  color: #fff;
}

.clear-chat-button:disabled {
  cursor: wait;
  opacity: .6;
}

.chat-message-actions {
  position: absolute;
  z-index: 20;
  top: 26px;
  right: 0;
  width: 130px;
  overflow: hidden;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  box-shadow: 0 14px 35px rgba(0,0,0,.25);
}

.chat-message.mine .chat-message-actions {
  right: auto;
  left: 0;
}

.chat-message-actions button {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 10px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--ink);
  font-size: 11px;
  text-align: left;
}

.chat-message-actions button:hover {
  background: color-mix(in srgb,var(--blue) 10%,var(--surface));
}

.chat-message-actions button.danger {
  color: var(--red);
}

.chat-reply-preview {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: -3px;
  padding: 9px 11px;
  border-left: 3px solid var(--purple);
  border-radius: 7px;
  background: color-mix(in srgb,var(--purple) 10%,var(--surface));
}

.chat-reply-preview span,
.chat-reply-preview strong,
.chat-reply-preview small {
  display: block;
  min-width: 0;
}

.chat-reply-preview span {
  flex: 1;
}

.chat-reply-preview small {
  margin-top: 3px;
  overflow: hidden;
  color: var(--muted);
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-reply-preview button {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 18px;
}

@media (max-width: 1000px) {
  body:has(.chat-shell) { overflow-y: auto; }
  .content:has(.chat-shell) { height: calc(100dvh - 75px); }
}

@media (max-width: 620px) {
  .content:has(.chat-shell) { height: calc(100dvh - 66px);padding-top: 10px;padding-bottom: 0; }
  .content:has(.chat-shell) > .page-heading { margin-bottom: 8px; }
  .content:has(.chat-shell) > .page-heading h1 { font-size: 20px; }
  .content:has(.chat-shell) > .page-heading p { display: none; }
  .chat-message-actions { position: fixed;top: auto;right: 12px!important;bottom: 82px;left: 12px!important;width: auto; }
  .clear-chat-button { padding: 6px 7px;font-size: 8px; }
  .chat-monitoring-label { display: none; }
}