.chat-page {
  min-height: min(720px, calc(100vh - 112px));
  display: grid;
  grid-template-columns: minmax(210px, 0.78fr) minmax(360px, 1.6fr) minmax(210px, 0.78fr);
  gap: 12px;
}

.chat-group-list,
.chat-message-stage,
.chat-detail-panel {
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border-radius: 8px;
}

.chat-group-list,
.chat-detail-panel {
  display: flex;
  flex-direction: column;
}

.chat-list-head,
.chat-message-head,
.chat-detail-panel > header {
  min-height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}

.chat-list-head > div,
.chat-message-head > div {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
}

.chat-list-head h2,
.chat-detail-panel h2,
.chat-message-head strong,
.chat-message-head span {
  margin: 0;
  color: var(--text);
  font-size: 16px;
  font-weight: 800;
}

.chat-message-head small,
.chat-group-copy small,
.chat-detail-content p,
.chat-composer-foot span,
.chat-message-meta {
  color: var(--muted);
  font-size: 12px;
}

.chat-title-icon,
.chat-message-avatar,
.chat-group-avatar,
.chat-detail-avatar {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(90, 215, 255, 0.36);
  border-radius: 8px;
  background: linear-gradient(145deg, rgba(62, 109, 255, 0.9), rgba(35, 183, 192, 0.84));
  color: #fff;
  font-weight: 900;
}

.chat-group-avatar.class,
.chat-detail-avatar.class { background: linear-gradient(145deg, #386fff, #5d6be9); }
.chat-group-avatar.ordinary,
.chat-detail-avatar.ordinary { background: linear-gradient(145deg, #1ca9b1, #2d7adb); }

.chat-create-placeholder,
.chat-head-detail,
.chat-mobile-back {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(65, 106, 196, 0.16);
  color: var(--text);
  font-weight: 800;
}

.chat-list-actions { display: flex; align-items: center; gap: 6px; }
.chat-create-placeholder { cursor: pointer; }
.chat-create-placeholder:hover,
.chat-head-detail:hover { border-color: rgba(77, 209, 230, 0.7); background: rgba(42, 150, 206, 0.28); }
.chat-mobile-back { display: none; }

.chat-group-search { display: flex; align-items: center; gap: 7px; margin: 12px; padding: 0 10px; height: 36px; border: 1px solid var(--line); border-radius: 8px; color: var(--muted); background: rgba(8, 24, 54, 0.28); }
.chat-group-search input { width: 100%; border: 0; outline: 0; background: transparent; color: var(--text); }
.chat-group-scroll,
.chat-message-scroll { min-height: 0; overflow: auto; scrollbar-width: thin; scrollbar-color: rgba(75, 187, 205, 0.58) transparent; }
.chat-group-scroll { padding: 0 8px 12px; }
.chat-group-section { margin-top: 8px; }
.chat-group-section-title { display: flex; justify-content: space-between; padding: 8px 8px 5px; color: var(--muted); font-size: 12px; font-weight: 800; }
.chat-group-items { display: grid; gap: 3px; }
.chat-group-item { display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; gap: 9px; align-items: center; width: 100%; min-height: 58px; padding: 8px; border: 1px solid transparent; border-radius: 8px; background: transparent; color: var(--text); text-align: left; }
.chat-group-item:hover,
.chat-group-item.active { border-color: rgba(86, 194, 240, 0.42); background: linear-gradient(135deg, rgba(60, 104, 241, 0.36), rgba(21, 172, 184, 0.2)); }
.chat-group-copy { min-width: 0; display: grid; gap: 3px; }
.chat-group-copy strong,
.chat-group-copy small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chat-group-state { color: var(--warning); font-size: 11px; }
.chat-empty-groups,
.chat-loading { margin: 24px 10px; color: var(--muted); text-align: center; }

.chat-message-stage { display: grid; grid-template-rows: auto minmax(0, 1fr) auto; }
.chat-message-head { position: relative; }
.chat-message-head > div { display: grid; gap: 2px; }
.chat-message-head span { font-size: 15px; }
.chat-message-scroll { padding: 18px; scroll-behavior: smooth; }
.chat-history-sentinel { margin: 0 0 12px; color: var(--muted); font-size: 12px; text-align: center; }
.chat-message-window-notice { margin: 0 0 12px; padding: 8px 10px; border: 1px solid rgba(87, 185, 215, 0.28); border-radius: 7px; background: rgba(41, 124, 168, 0.12); color: var(--muted); font-size: 12px; text-align: center; }
.chat-empty-stage { min-height: 100%; display: grid; place-content: center; gap: 8px; text-align: center; color: var(--muted); }
.chat-empty-stage > span { margin: auto; display: grid; place-items: center; width: 44px; height: 44px; border-radius: 8px; color: var(--cyan); background: rgba(63, 109, 255, 0.14); }
.chat-empty-stage h2 { margin: 0; color: var(--text); font-size: 18px; }
.chat-empty-stage p { margin: 0; }
.chat-message { display: flex; gap: 9px; margin: 0 0 14px; }
.chat-message.mine { justify-content: flex-end; }
.chat-message-avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--avatar-color, #3f6dff); }
.chat-message-bubble-wrap { max-width: min(84%, 560px); }
.chat-message-sender { display: flex; align-items: center; gap: 6px; margin: 0 0 4px; color: var(--muted); font-size: 12px; }
.chat-message-sender small { padding: 1px 5px; border-radius: 999px; background: rgba(62, 213, 255, 0.12); color: var(--cyan); }
.chat-message-bubble { padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: rgba(12, 28, 60, 0.6); color: var(--text); line-height: 1.55; overflow-wrap: anywhere; }
.chat-message.mine .chat-message-bubble { border-color: rgba(80, 213, 235, 0.5); background: linear-gradient(135deg, #2d71d8, #168f9c); }
.chat-message-sticker { display: block; max-width: min(240px, 100%); max-height: 240px; border-radius: 8px; object-fit: contain; }
.chat-sticker-pending { color: var(--muted); font-size: 12px; }
.chat-message.failed .chat-message-bubble { border-color: rgba(247, 114, 114, 0.72); }
.chat-message-meta { display: flex; align-items: center; gap: 8px; margin-top: 4px; }
.chat-message.mine .chat-message-meta { justify-content: flex-end; }
.chat-pending { color: var(--muted); }
.chat-retry { padding: 0; background: transparent; color: var(--warning); font-size: 12px; }
.chat-composer { display: grid; gap: 8px; padding: 12px 14px; border-top: 1px solid var(--line); background: rgba(9, 22, 49, 0.3); }
.chat-composer textarea { width: 100%; min-height: 48px; max-height: 120px; resize: vertical; padding: 9px 10px; border: 1px solid var(--line); border-radius: 8px; outline: 0; background: rgba(6, 19, 45, 0.42); color: var(--text); }
.chat-composer textarea:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(50, 215, 255, 0.1); }
.chat-composer-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.chat-composer-tools { display: flex; align-items: center; min-width: 0; gap: 7px; }
.chat-composer-tools > button { display: grid; place-items: center; width: 30px; min-width: 30px; height: 30px; padding: 0; border: 1px solid var(--line); border-radius: 8px; background: rgba(55, 107, 192, 0.16); color: var(--text); font-size: 16px; }
.chat-composer-tools span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chat-composer-foot button { min-width: 72px; height: 32px; border: 1px solid rgba(80, 214, 236, 0.54); border-radius: 8px; background: linear-gradient(135deg, #2c70e5, #159c9c); color: #fff; font-weight: 800; }
.chat-composer-foot button:disabled { cursor: not-allowed; opacity: 0.45; }
.chat-sticker-panel { display: grid; gap: 8px; max-height: 228px; overflow: auto; padding: 10px; border: 1px solid var(--line); border-radius: 8px; background: rgba(4, 19, 48, 0.62); }
.chat-sticker-panel[hidden] { display: none; }
.chat-sticker-panel-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; color: var(--muted); font-size: 12px; }
.chat-sticker-panel-head strong { color: var(--text); }
.chat-sticker-panel-head button { border: 0; background: transparent; color: var(--cyan); font: inherit; font-weight: 700; }
.chat-sticker-grid { display: flex; flex-wrap: wrap; gap: 6px; }
.chat-sticker-grid > span { color: var(--muted); font-size: 12px; }
.chat-sticker-button { display: grid; place-items: center; width: 34px; height: 34px; padding: 0; border: 1px solid transparent; border-radius: 8px; background: rgba(56, 108, 192, 0.1); color: var(--text); font-size: 20px; }
.chat-sticker-button:hover,
.chat-sticker-button.selected { border-color: rgba(72, 213, 235, 0.74); background: rgba(55, 151, 213, 0.22); }
.chat-sticker-button.image { width: 52px; height: 52px; }
.chat-sticker-button.image img { width: 100%; height: 100%; border-radius: 7px; object-fit: cover; }
.chat-sticker-empty { padding: 6px 0; }

.chat-detail-content { display: grid; justify-items: center; gap: 12px; padding: 24px 16px; text-align: center; }
.chat-detail-avatar { width: 58px; height: 58px; font-size: 21px; }
.chat-detail-content h3 { margin: 0; color: var(--text); font-size: 17px; }
.chat-detail-content p { margin: 0; line-height: 1.6; }
.chat-detail-content dl { width: 100%; margin: 4px 0 0; border-top: 1px solid var(--line); }
.chat-detail-content dl div { display: flex; justify-content: space-between; gap: 10px; padding: 10px 2px; border-bottom: 1px solid var(--line); text-align: left; }
.chat-detail-content dt { color: var(--muted); font-size: 12px; }
.chat-detail-content dd { margin: 0; color: var(--text); font-size: 12px; font-weight: 700; }
.chat-detail-action { width: 100%; min-height: 36px; border: 1px solid var(--line); border-radius: 8px; background: rgba(45, 117, 214, 0.18); color: var(--text); font-weight: 700; }
.chat-detail-actions { display: grid; width: 100%; gap: 8px; }
.chat-frozen-note { width: 100%; padding: 10px; border: 1px solid rgba(247, 184, 75, 0.4); border-radius: 8px; color: var(--warning); font-size: 12px; text-align: left; }
.chat-detail-empty { min-height: 220px; display: grid; place-content: center; gap: 8px; padding: 20px; color: var(--muted); text-align: center; }
.chat-detail-empty span { margin: auto; color: var(--cyan); font-size: 26px; }
.chat-detail-empty p { margin: 0; }

html[data-theme="day"] .chat-group-search,
html[data-theme="day"] .chat-composer,
html[data-theme="day"] .chat-composer textarea,
html[data-theme="day"] .chat-message-bubble { background: rgba(255, 255, 255, 0.56); }
html[data-theme="day"] .chat-message-bubble { color: #16404a; }
html[data-theme="day"] .chat-sticker-panel { background: rgba(255, 255, 255, 0.84); }
html[data-theme="day"] .chat-message.mine .chat-message-bubble { color: #fff; }
html[data-theme="day"] .chat-group-item:hover,
html[data-theme="day"] .chat-group-item.active { background: linear-gradient(135deg, rgba(99, 196, 199, 0.24), rgba(87, 137, 255, 0.16)); }

.chat-modal-root { position: fixed; z-index: 40; inset: 0; display: grid; place-items: center; padding: 20px; }
.chat-modal-root[hidden] { display: none; }
.chat-modal-backdrop { position: absolute; inset: 0; background: rgba(3, 13, 35, 0.56); backdrop-filter: blur(8px); }
.chat-modal { position: relative; z-index: 1; width: min(100%, 440px); border: 1px solid rgba(105, 208, 237, 0.4); border-radius: 8px; background: linear-gradient(160deg, rgba(14, 34, 75, 0.98), rgba(7, 20, 48, 0.99)); box-shadow: 0 22px 64px rgba(0, 0, 0, 0.38); color: var(--text); overflow: hidden; }
.chat-modal:focus { outline: 3px solid rgba(72, 205, 229, 0.45); outline-offset: 3px; }
.chat-modal-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; padding: 18px 18px 14px; border-bottom: 1px solid var(--line); }
.chat-modal-head h2 { margin: 0; font-size: 18px; color: var(--text); }
.chat-modal-head p { margin: 5px 0 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.chat-modal-head button { display: grid; place-items: center; width: 28px; height: 28px; border: 1px solid var(--line); border-radius: 8px; background: transparent; color: var(--text); font-size: 20px; line-height: 1; }
.chat-modal-form { display: grid; gap: 13px; padding: 18px; }
.chat-modal-form label,
.chat-qr-content label { display: grid; gap: 6px; color: var(--muted); font-size: 12px; font-weight: 700; }
.chat-modal-form input,
.chat-modal-form textarea,
.chat-qr-content input { width: 100%; box-sizing: border-box; border: 1px solid var(--line); border-radius: 8px; outline: 0; background: rgba(4, 18, 43, 0.52); color: var(--text); padding: 10px 11px; font: inherit; }
.chat-modal-form input:focus,
.chat-modal-form textarea:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(53, 213, 255, 0.12); }
.chat-modal-actions { display: flex; justify-content: flex-end; gap: 9px; padding: 14px 18px 18px; }
.chat-modal-form .chat-modal-actions { padding: 0; }
.chat-modal-actions button,
.chat-search-result button { min-height: 34px; padding: 0 13px; border: 1px solid var(--line); border-radius: 8px; background: rgba(85, 117, 183, 0.18); color: var(--text); font-weight: 800; }
.chat-modal-actions .primary,
.chat-search-result .primary { border-color: rgba(77, 210, 230, 0.58); background: linear-gradient(135deg, #2675da, #159b9d); color: #fff; }
.chat-search-result { min-height: 0; }
.chat-search-result > div { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 12px; border: 1px solid rgba(94, 203, 226, 0.32); border-radius: 8px; background: rgba(59, 107, 193, 0.14); }
.chat-search-result strong { color: var(--text); }
.chat-search-result small { color: var(--muted); }
.chat-inline-error { margin: 0; padding: 10px 12px; border: 1px solid rgba(248, 135, 135, 0.38); border-radius: 8px; color: #ff9e9e; font-size: 12px; }
.chat-qr-content { display: grid; justify-items: center; gap: 12px; padding: 18px; }
.chat-qr-content img { width: min(230px, 100%); aspect-ratio: 1; padding: 10px; border-radius: 8px; background: #fff; }
.chat-qr-content p { margin: 0; color: var(--muted); font-size: 12px; text-align: center; }
.chat-qr-content label { width: 100%; }
.chat-member-list,
.chat-review-list { display: grid; gap: 8px; max-height: min(48vh, 420px); overflow: auto; padding: 16px 18px 4px; }
.chat-member-row,
.chat-review-row { display: flex; align-items: center; gap: 10px; min-width: 0; padding: 10px; border: 1px solid var(--line); border-radius: 8px; background: rgba(49, 104, 180, 0.12); }
.chat-member-avatar { display: grid; place-items: center; flex: 0 0 auto; width: 34px; height: 34px; border-radius: 50%; background: var(--member-color, #3478f6); color: #fff; font-size: 14px; font-weight: 800; }
.chat-member-row > div,
.chat-review-copy { display: grid; min-width: 0; gap: 2px; }
.chat-member-row strong,
.chat-review-copy strong { overflow: hidden; color: var(--text); font-size: 14px; text-overflow: ellipsis; white-space: nowrap; }
.chat-member-row small,
.chat-review-copy small { color: var(--muted); font-size: 12px; }
.chat-review-copy { flex: 1 1 auto; }
.chat-review-actions { display: flex; flex: 0 0 auto; gap: 6px; }
.chat-review-actions button { min-height: 30px; padding: 0 9px; border: 1px solid var(--line); border-radius: 7px; background: rgba(77, 110, 174, 0.18); color: var(--text); font-weight: 700; }
.chat-review-actions .primary { border-color: rgba(77, 210, 230, 0.58); background: linear-gradient(135deg, #2675da, #159b9d); color: #fff; }
.chat-modal-empty { margin: 0; padding: 28px 16px; color: var(--muted); text-align: center; }

.chat-admin-page { display: grid; gap: 14px; max-width: 1240px; }
.chat-admin-hero { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 22px; border: 1px solid var(--line); border-radius: 8px; background: linear-gradient(120deg, rgba(37, 108, 206, 0.2), rgba(24, 164, 157, 0.14)); }
.chat-admin-hero span { color: var(--cyan); font-size: 12px; font-weight: 800; }
.chat-admin-hero h2 { margin: 6px 0; color: var(--text); font-size: 24px; }
.chat-admin-hero p { max-width: 620px; margin: 0; color: var(--muted); line-height: 1.6; }
.chat-admin-refresh { min-height: 36px; padding: 0 14px; border: 1px solid rgba(80, 214, 236, 0.54); border-radius: 8px; background: rgba(12, 51, 101, 0.36); color: var(--text); font-weight: 800; }
.chat-admin-layout { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.chat-admin-card { min-width: 0; padding: 16px; border: 1px solid var(--line); border-radius: 8px; background: rgba(8, 27, 62, 0.28); }
.chat-admin-card > header { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 11px; border-bottom: 1px solid var(--line); }
.chat-admin-card h2 { margin: 0; color: var(--text); font-size: 16px; }
.chat-admin-card > header span { color: var(--muted); font-size: 12px; }
.chat-admin-list { display: grid; gap: 8px; margin-top: 12px; }
.chat-admin-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 11px; border: 1px solid var(--line); border-radius: 8px; background: rgba(41, 99, 182, 0.12); }
.chat-admin-row > div:first-child { display: grid; min-width: 0; gap: 3px; }
.chat-admin-row strong { overflow: hidden; color: var(--text); text-overflow: ellipsis; white-space: nowrap; }
.chat-admin-row small { overflow: hidden; color: var(--muted); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.chat-admin-actions { display: flex; flex: 0 0 auto; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
.chat-admin-actions button { min-height: 30px; padding: 0 9px; border: 1px solid var(--line); border-radius: 7px; background: rgba(55, 106, 185, 0.22); color: var(--text); font-weight: 700; }
.chat-admin-actions .danger { border-color: rgba(242, 129, 129, 0.48); color: #ffb0b0; }
.chat-admin-closed { color: var(--muted); font-size: 12px; }
.chat-admin-log { display: grid; gap: 0; margin-top: 8px; }
.chat-admin-log > div { display: grid; gap: 3px; padding: 10px 2px; border-bottom: 1px solid var(--line); }
.chat-admin-log strong { color: var(--text); font-size: 13px; }
.chat-admin-log span { color: var(--muted); font-size: 12px; }
.chat-admin-empty { margin: 0; padding: 22px 8px; color: var(--muted); text-align: center; }

html[data-theme="day"] .chat-modal { background: linear-gradient(160deg, rgba(255, 255, 255, 0.98), rgba(238, 251, 252, 0.98)); box-shadow: 0 22px 64px rgba(22, 78, 95, 0.2); }
html[data-theme="day"] .chat-modal-form input,
html[data-theme="day"] .chat-modal-form textarea,
html[data-theme="day"] .chat-qr-content input { background: rgba(255, 255, 255, 0.88); color: #16404a; }
html[data-theme="day"] .chat-inline-error { color: #ad3b47; }
html[data-theme="day"] .chat-member-row,
html[data-theme="day"] .chat-review-row,
html[data-theme="day"] .chat-admin-card,
html[data-theme="day"] .chat-admin-row { background: rgba(255, 255, 255, 0.74); }

@media (max-width: 760px) {
  .chat-page { min-height: calc(100vh - 94px); display: block; }
  .chat-group-list,
  .chat-message-stage,
  .chat-detail-panel { height: calc(100vh - 94px); }
  .chat-page[data-mobile-pane="groups"] .chat-message-stage,
  .chat-page[data-mobile-pane="groups"] .chat-detail-panel,
  .chat-page[data-mobile-pane="messages"] .chat-group-list,
  .chat-page[data-mobile-pane="messages"] .chat-detail-panel,
  .chat-page[data-mobile-pane="details"] .chat-group-list,
  .chat-page[data-mobile-pane="details"] .chat-message-stage { display: none; }
  .chat-mobile-back { display: grid; }
  .chat-message-head { padding-inline: 10px; }
  .chat-message-scroll { padding: 12px; }
  .chat-message-bubble-wrap { max-width: 88%; }
  .chat-modal-root { align-items: end; padding: 10px; }
  .chat-modal { width: 100%; max-height: calc(100vh - 20px); overflow: auto; }
  .chat-review-row { align-items: flex-start; flex-wrap: wrap; }
  .chat-review-actions { width: 100%; justify-content: flex-end; margin-left: 44px; }
  .chat-admin-hero,
  .chat-admin-row { align-items: flex-start; flex-direction: column; }
  .chat-admin-layout { grid-template-columns: 1fr; }
  .chat-admin-actions { width: 100%; justify-content: flex-end; }
}