:root {
  color-scheme: light;
  --bg: #eef2f8;
  --surface: #ffffff;
  --surface-soft: #f7f9fc;
  --surface-strong: #eef3fb;
  --text: #172033;
  --text-soft: #68758d;
  --text-faint: #98a3b6;
  --line: #e2e8f1;
  --line-strong: #d3dce9;
  --primary: #1769f5;
  --primary-strong: #0f57d7;
  --primary-soft: #eaf2ff;
  --success: #15a46f;
  --warning: #f39a24;
  --danger: #e4485f;
  --shadow: 0 24px 70px rgba(32, 49, 80, 0.12);
  --shadow-soft: 0 12px 32px rgba(32, 49, 80, 0.08);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --rail-width: 88px;
  --list-width: 344px;
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "PingFang SC",
    "Microsoft YaHei",
    sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0e1420;
  --surface: #151d2b;
  --surface-soft: #111927;
  --surface-strong: #202b3d;
  --text: #edf3ff;
  --text-soft: #9eabc0;
  --text-faint: #718096;
  --line: #273448;
  --line-strong: #34435a;
  --primary: #4d8cff;
  --primary-strong: #6ea2ff;
  --primary-soft: #20365c;
  --success: #2bc38d;
  --warning: #ffad42;
  --danger: #ff6479;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.34);
  --shadow-soft: 0 12px 36px rgba(0, 0, 0, 0.24);
}

* {
  box-sizing: border-box;
}
html,
body {
  width: 100%;
  min-height: 100%;
}
body {
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
}
/* 登录页只保留一个纵向滚动拥有者：页面文档本身。 */
body.auth-mode {
  height: auto;
  min-height: 100%;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior-y: auto;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
}
button,
input,
textarea {
  font: inherit;
}
button {
  color: inherit;
}
button,
summary {
  -webkit-tap-highlight-color: transparent;
}
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--primary) 28%, transparent);
  outline-offset: 2px;
}
svg {
  display: block;
  width: 1em;
  height: 1em;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.hidden {
  display: none !important;
}
.mobile-only {
  display: none !important;
}
.eyebrow {
  margin: 0 0 5px;
  color: var(--primary);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* Authentication */
.auth-view {
  width: 100%;
  min-height: 100svh;
  position: relative;
  overflow: visible;
  touch-action: pan-y;
  background: linear-gradient(140deg, #f4f8ff 0%, #edf3ff 42%, #f7f9fc 100%);
}
html[data-theme="dark"] .auth-view {
  background:
    radial-gradient(circle at 10% 10%, #1b2d50 0, transparent 38%),
    linear-gradient(145deg, #0b111b, #111a2a 55%, #0e1420);
}
.auth-backdrop {
  position: fixed;
  border-radius: 999px;
  filter: blur(8px);
  opacity: 0.58;
  pointer-events: none !important;
}
.auth-backdrop-one {
  width: 420px;
  height: 420px;
  right: -120px;
  top: -130px;
  background: radial-gradient(
    circle,
    rgba(68, 130, 255, 0.3),
    rgba(68, 130, 255, 0)
  );
}
.auth-backdrop-two {
  width: 360px;
  height: 360px;
  left: -120px;
  bottom: -130px;
  background: radial-gradient(
    circle,
    rgba(96, 78, 255, 0.2),
    rgba(96, 78, 255, 0)
  );
}
.auth-layout {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 40px));
  min-height: 100svh;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(420px, 0.78fr);
  align-items: center;
  gap: clamp(38px, 7vw, 100px);
  padding: 46px 0;
}

@media (max-height: 780px) {
  .auth-layout {
    align-items: start;
    min-height: max-content;
    padding-top: max(22px, env(safe-area-inset-top));
    padding-bottom: max(28px, env(safe-area-inset-bottom));
  }
  .auth-brand-panel {
    padding-top: 12px;
  }
}
.auth-brand-panel {
  padding: 36px 0;
}
.brand-mark {
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 900;
  background: linear-gradient(145deg, #2a79ff, #5b5bf3);
  box-shadow: 0 18px 34px rgba(36, 107, 253, 0.28);
}
.brand-mark-large {
  width: 64px;
  height: 64px;
  border-radius: 19px;
  margin-bottom: 34px;
  font-size: 31px;
}
.auth-brand-panel h1 {
  max-width: 660px;
  margin: 0;
  font-size: clamp(46px, 6vw, 78px);
  line-height: 1.06;
  letter-spacing: -0.055em;
}
.auth-copy {
  max-width: 630px;
  margin: 24px 0 36px;
  color: var(--text-soft);
  font-size: 17px;
  line-height: 1.85;
}
.auth-points {
  display: grid;
  gap: 13px;
  max-width: 600px;
}
.auth-points > div {
  display: grid;
  grid-template-columns: 42px 1fr;
  grid-template-rows: auto auto;
  align-items: center;
  gap: 1px 13px;
  padding: 13px 16px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.46);
  backdrop-filter: blur(16px);
}
html[data-theme="dark"] .auth-points > div {
  background: rgba(24, 34, 52, 0.66);
  border-color: rgba(130, 156, 205, 0.12);
}
.auth-points span {
  grid-row: 1 / 3;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  color: var(--primary);
  background: var(--primary-soft);
  font-size: 21px;
}
.auth-points b {
  font-size: 14px;
}
.auth-points small {
  color: var(--text-soft);
  font-size: 12px;
}
.auth-card-wrap {
  width: 100%;
  max-width: 520px;
  justify-self: end;
}
.auth-card {
  padding: 30px;
  border: 1px solid rgba(218, 226, 239, 0.9);
  border-radius: 28px;
  background: color-mix(in srgb, var(--surface) 93%, transparent);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}
html[data-theme="dark"] .auth-card {
  border-color: rgba(110, 135, 175, 0.18);
}
.auth-card-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
}
.auth-card-head h2 {
  margin: 0;
  font-size: 30px;
  letter-spacing: -0.035em;
}
.auth-card-head p:last-child {
  margin: 7px 0 0;
  color: var(--text-soft);
  font-size: 13px;
}
.auth-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 5px;
  margin: 26px 0 24px;
  padding: 5px;
  border-radius: 13px;
  background: var(--surface-soft);
}
.auth-tab {
  min-height: 40px;
  border: 0;
  border-radius: 9px;
  color: var(--text-soft);
  background: transparent;
  cursor: pointer;
  font-weight: 700;
  font-size: 13px;
}
.auth-tab.active {
  color: var(--primary);
  background: var(--surface);
  box-shadow: 0 4px 14px rgba(31, 50, 85, 0.08);
}
.auth-form {
  display: none;
  gap: 16px;
}
.auth-form.active {
  display: grid;
}
.field-label {
  display: grid;
  gap: 8px;
  color: var(--text);
  font-size: 13px;
  font-weight: 750;
}
.input-shell {
  min-height: 48px;
  display: grid;
  grid-template-columns: 22px 1fr auto;
  align-items: center;
  gap: 9px;
  padding: 0 13px;
  border: 1px solid var(--line-strong);
  border-radius: 13px;
  background: var(--surface);
  color: var(--text-faint);
  transition: 0.18s ease;
}
.input-shell:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 12%, transparent);
  color: var(--primary);
}
.input-shell input {
  min-width: 0;
  border: 0;
  outline: 0;
  color: var(--text);
  background: transparent;
}
.input-shell input::placeholder,
input::placeholder,
textarea::placeholder {
  color: var(--text-faint);
}
.password-toggle {
  border: 0;
  padding: 5px;
  color: var(--text-faint);
  background: transparent;
  cursor: pointer;
}
.primary-button,
.secondary-button,
.text-button {
  min-height: 43px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 0;
  border-radius: 12px;
  padding: 0 17px;
  cursor: pointer;
  font-weight: 800;
  transition: 0.18s ease;
}
.primary-button {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #4d68f7);
  box-shadow: 0 10px 20px color-mix(in srgb, var(--primary) 24%, transparent);
}
.primary-button:hover {
  transform: translateY(-1px);
  filter: saturate(1.08);
}
.primary-button:active {
  transform: translateY(0);
}
.secondary-button {
  color: var(--text);
  background: var(--surface-strong);
}
.text-button {
  color: var(--primary);
  background: transparent;
}
.auth-submit {
  width: 100%;
  margin-top: 3px;
  min-height: 49px;
}
.notice {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 12px;
  color: #1456bd;
  background: #eaf3ff;
  font-size: 13px;
  line-height: 1.6;
  white-space: pre-wrap;
}
.notice.error {
  color: #ac3048;
  background: #fff0f3;
}
html[data-theme="dark"] .notice {
  color: #b8d1ff;
  background: #1c365d;
}
html[data-theme="dark"] .notice.error {
  color: #ffb2bf;
  background: #492431;
}
.server-details {
  margin-top: 19px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
.server-details summary {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-soft);
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
  list-style: none;
}
.server-details summary::-webkit-details-marker {
  display: none;
}
.server-fields {
  display: grid;
  gap: 13px;
  padding-top: 15px;
}
.server-fields input,
.stack-form input,
.stack-form textarea,
.field-label > input,
.field-label > textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  padding: 12px 13px;
  outline: 0;
  color: var(--text);
  background: var(--surface);
  resize: vertical;
}
.server-fields input:focus,
.stack-form input:focus,
.stack-form textarea:focus,
.field-label > input:focus,
.field-label > textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 12%, transparent);
}
.button-row {
  display: flex;
  gap: 9px;
}
.mini-status {
  min-height: 18px;
  margin: 0;
  color: var(--text-soft);
  font-size: 12px;
}
.auth-foot {
  margin: 16px 0 0;
  text-align: center;
  color: var(--text-faint);
  font-size: 11px;
}

/* Application shell */
.app-view {
  height: 100dvh;
  padding: 18px;
  background:
    radial-gradient(
      circle at 25% -20%,
      rgba(63, 122, 246, 0.12),
      transparent 36%
    ),
    var(--bg);
}
.app-frame {
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-columns: var(--rail-width) var(--list-width) minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 18px 12px 14px;
  border-right: 1px solid var(--line);
  background: var(--surface-soft);
}
.profile-button {
  position: relative;
  border: 0;
  padding: 0;
  border-radius: 16px;
  background: transparent;
  cursor: pointer;
}
.avatar {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(145deg, #2c7aff, #6759ed);
  font-weight: 850;
  user-select: none;
}
.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.avatar-large {
  width: 48px;
  height: 48px;
  font-size: 17px;
}
.avatar-medium {
  width: 44px;
  height: 44px;
  font-size: 15px;
}
.avatar-small {
  width: 40px;
  height: 40px;
  font-size: 14px;
}
.avatar-xl {
  width: 76px;
  height: 76px;
  font-size: 24px;
}
.presence-dot {
  position: absolute;
  right: -1px;
  bottom: 1px;
  width: 13px;
  height: 13px;
  border: 3px solid var(--surface-soft);
  border-radius: 50%;
  background: var(--text-faint);
}
.presence-dot.online {
  background: #18bd74;
}
.rail-nav,
.rail-bottom {
  width: 100%;
  display: grid;
  gap: 7px;
}
.rail-nav {
  margin-top: 4px;
}
.rail-bottom {
  margin-top: auto;
}
.rail-item {
  position: relative;
  min-height: 58px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 4px;
  border: 0;
  border-radius: 15px;
  color: var(--text-soft);
  background: transparent;
  cursor: pointer;
  font-size: 20px;
  transition: 0.18s ease;
}
.rail-item span:last-of-type {
  font-size: 10px;
  font-weight: 700;
}
.rail-item:hover {
  color: var(--primary);
  background: var(--primary-soft);
}
.rail-item.active {
  color: var(--primary);
  background: var(--primary-soft);
  box-shadow: inset 3px 0 0 var(--primary);
}
.rail-item.compact {
  min-height: 49px;
}
.rail-item.danger:hover {
  color: var(--danger);
  background: color-mix(in srgb, var(--danger) 10%, transparent);
}
.nav-badge {
  position: absolute;
  top: 5px;
  right: 5px;
  min-width: 18px;
  height: 18px;
  display: grid;
  place-items: center;
  padding: 0 5px;
  border: 2px solid var(--surface-soft);
  border-radius: 999px;
  color: #fff;
  background: #ff4058;
  font-size: 9px;
  font-style: normal;
  font-weight: 900;
}

.list-pane {
  min-width: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  background: var(--surface);
}
.list-header {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 18px 12px 20px;
}
.list-header h2 {
  margin: 0;
  font-size: 21px;
  letter-spacing: -0.025em;
}
.header-actions {
  display: flex;
  gap: 5px;
}
.icon-button {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 12px;
  color: var(--primary);
  background: var(--primary-soft);
  cursor: pointer;
  font-size: 19px;
  transition: 0.18s ease;
}
.icon-button:hover {
  transform: translateY(-1px);
}
.icon-button.ghost {
  color: var(--text-soft);
  background: transparent;
}
.icon-button.ghost:hover {
  color: var(--primary);
  background: var(--primary-soft);
}
.search-box {
  min-height: 43px;
  display: grid;
  grid-template-columns: 20px 1fr auto;
  align-items: center;
  gap: 8px;
  margin: 0 16px 13px;
  padding: 0 12px;
  border: 1px solid transparent;
  border-radius: 12px;
  color: var(--text-faint);
  background: var(--surface-soft);
}
.search-box:focus-within {
  color: var(--primary);
  border-color: color-mix(in srgb, var(--primary) 35%, var(--line));
  background: var(--surface);
}
.search-box input {
  min-width: 0;
  border: 0;
  outline: 0;
  color: var(--text);
  background: transparent;
}
.clear-search {
  border: 0;
  padding: 4px;
  color: var(--text-faint);
  background: transparent;
  cursor: pointer;
}
.list-content {
  min-height: 0;
  flex: 1;
  overflow-y: auto;
  padding: 0 8px 14px;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}
.list-section-label {
  margin: 13px 12px 7px;
  color: var(--text-faint);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.12em;
}
.conversation-item,
.contact-item,
.group-item,
.request-item {
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 11px;
  border: 0;
  border-radius: 14px;
  padding: 11px 10px;
  color: var(--text);
  background: transparent;
  cursor: pointer;
  text-align: left;
  transition: 0.16s ease;
}
.conversation-item:hover,
.contact-item:hover,
.group-item:hover,
.request-item:hover {
  background: var(--surface-soft);
}
.conversation-item.active {
  background: linear-gradient(
    95deg,
    var(--primary-soft),
    color-mix(in srgb, var(--primary-soft) 50%, transparent)
  );
  box-shadow: inset 3px 0 0 var(--primary);
}
.item-main {
  min-width: 0;
}
.item-title-row {
  display: flex;
  align-items: center;
  gap: 6px;
}
.item-title {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 800;
}
.item-subtitle {
  margin-top: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-soft);
  font-size: 11.5px;
}
.item-meta {
  display: grid;
  justify-items: end;
  gap: 6px;
  color: var(--text-faint);
  font-size: 10px;
}
.unread-badge {
  min-width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  padding: 0 6px;
  border-radius: 999px;
  color: #fff;
  background: #ff4058;
  font-size: 9px;
  font-weight: 900;
}
.online-label {
  color: var(--success);
  font-size: 10px;
  font-weight: 750;
}
.role-label {
  padding: 3px 6px;
  border-radius: 6px;
  color: var(--primary);
  background: var(--primary-soft);
  font-size: 9px;
  font-weight: 850;
}
.list-empty {
  min-height: 280px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 11px;
  padding: 30px;
  color: var(--text-soft);
  text-align: center;
}
.list-empty span {
  font-size: 42px;
  color: var(--text-faint);
}
.list-empty p {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
}

.main-pane {
  min-width: 0;
  min-height: 0;
  position: relative;
  display: flex;
  overflow: hidden;
  background: var(--surface-soft);
}
.empty-state {
  flex: 1;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 12px;
  padding: 40px;
  text-align: center;
}
.empty-illustration {
  width: 110px;
  height: 110px;
  display: grid;
  place-items: center;
  margin-bottom: 5px;
  border-radius: 34px;
  color: var(--primary);
  background: linear-gradient(
    145deg,
    var(--primary-soft),
    color-mix(in srgb, var(--primary-soft) 40%, var(--surface))
  );
  font-size: 55px;
  transform: rotate(-3deg);
}
.empty-state h2 {
  margin: 0;
  font-size: 23px;
}
.empty-state p {
  max-width: 430px;
  margin: 0 0 12px;
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1.7;
}
.chat-view {
  min-width: 0;
  min-height: 0;
  flex: 1;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  position: relative;
  background: var(--surface);
}
.chat-header {
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 17px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  backdrop-filter: blur(18px);
}
.chat-title-wrap {
  min-width: 0;
  flex: 1;
}
.chat-title-wrap h2 {
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 16px;
}
.chat-title-wrap p {
  margin: 4px 0 0;
  color: var(--text-soft);
  font-size: 11px;
}
.chat-actions {
  display: flex;
  gap: 3px;
}
.message-search-bar {
  min-height: 52px;
  display: grid;
  grid-template-columns: 20px 1fr auto;
  align-items: center;
  gap: 9px;
  padding: 7px 18px;
  border-bottom: 1px solid var(--line);
  color: var(--text-faint);
  background: var(--surface-soft);
}
.message-search-bar input {
  border: 0;
  outline: 0;
  color: var(--text);
  background: transparent;
}
.message-search-bar button {
  border: 0;
  padding: 7px;
  color: var(--text-soft);
  background: transparent;
  cursor: pointer;
}
.messages {
  min-height: 0;
  overflow-y: auto;
  padding: 22px clamp(18px, 3vw, 42px);
  background:
    radial-gradient(
      circle at 100% 0%,
      color-mix(in srgb, var(--primary) 6%, transparent),
      transparent 30%
    ),
    var(--surface);
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}
.message-day {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 15px 0 22px;
  color: var(--text-faint);
  font-size: 10px;
}
.message-day::before,
.message-day::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}
.message-row {
  display: flex;
  align-items: flex-end;
  gap: 9px;
  margin: 8px 0;
}
.message-row.mine {
  flex-direction: row-reverse;
}
.message-avatar {
  width: 30px;
  height: 30px;
  font-size: 10px;
}
.message-stack {
  max-width: min(70%, 660px);
}
.message-sender {
  margin: 0 0 4px 4px;
  color: var(--text-soft);
  font-size: 10px;
}
.message-row.mine .message-sender {
  text-align: right;
  margin: 0 4px 4px 0;
}
.message-bubble {
  position: relative;
  min-width: 44px;
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 5px 15px 15px 15px;
  color: var(--text);
  background: var(--surface-soft);
  box-shadow: 0 5px 15px rgba(30, 47, 79, 0.05);
  font-size: 13px;
  line-height: 1.62;
  word-break: break-word;
  white-space: pre-wrap;
}
.message-row.mine .message-bubble {
  border-color: transparent;
  border-radius: 15px 5px 15px 15px;
  color: #fff;
  background: linear-gradient(135deg, #2b75fb, #4e63ef);
}
.message-row.pending .message-bubble {
  opacity: 0.66;
}
.message-time {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 4px;
  margin-top: 4px;
  color: var(--text-faint);
  font-size: 9px;
}
.message-row.mine .message-time {
  color: color-mix(in srgb, #fff 72%, transparent);
}
.system-message {
  width: fit-content;
  max-width: 76%;
  margin: 14px auto;
  padding: 7px 11px;
  border-radius: 999px;
  color: var(--text-soft);
  background: var(--surface-soft);
  font-size: 10px;
  text-align: center;
}
.attachment-card {
  min-width: min(330px, 58vw);
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  color: inherit;
}
.attachment-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: var(--primary);
  background: var(--primary-soft);
  font-size: 22px;
}
.message-row.mine .attachment-icon {
  color: #fff;
  background: rgba(255, 255, 255, 0.18);
}
.attachment-info {
  min-width: 0;
  display: grid;
  gap: 3px;
}
.attachment-info b {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
}
.attachment-info small {
  opacity: 0.72;
  font-size: 10px;
}
.attachment-download {
  border: 0;
  padding: 7px;
  color: inherit;
  background: transparent;
  cursor: pointer;
  font-size: 18px;
}
.picture-message {
  display: grid;
  gap: 8px;
}
.picture-preview {
  max-width: min(390px, 58vw);
  max-height: 360px;
  display: block;
  border-radius: 11px;
  object-fit: cover;
  background: var(--surface-strong);
  cursor: zoom-in;
}
.picture-placeholder {
  min-width: 220px;
  min-height: 130px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 8px;
  border-radius: 11px;
  background: var(--surface-strong);
  color: var(--text-soft);
  cursor: pointer;
}
.message-row.mine .picture-placeholder {
  color: #fff;
  background: rgba(255, 255, 255, 0.16);
}
.typing-indicator {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 36px;
  padding: 8px 13px;
  border-radius: 5px 15px 15px 15px;
  background: var(--surface-soft);
}
.typing-indicator i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-faint);
  animation: typing 1.1s infinite ease-in-out;
}
.typing-indicator i:nth-child(2) {
  animation-delay: 0.15s;
}
.typing-indicator i:nth-child(3) {
  animation-delay: 0.3s;
}
@keyframes typing {
  0%,
  70%,
  100% {
    transform: translateY(0);
    opacity: 0.45;
  }
  35% {
    transform: translateY(-4px);
    opacity: 1;
  }
}
.jump-bottom {
  position: absolute;
  right: 24px;
  bottom: 92px;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--primary);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
}
.jump-bottom i {
  position: absolute;
  right: -3px;
  top: -4px;
  min-width: 18px;
  height: 18px;
  display: grid;
  place-items: center;
  padding: 0 4px;
  border-radius: 999px;
  color: #fff;
  background: #ff4058;
  font-size: 9px;
  font-style: normal;
}
.composer {
  position: relative;
  min-height: 76px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: end;
  gap: 8px;
  padding: 11px 16px;
  border-top: 1px solid var(--line);
  background: var(--surface);
}
.composer-tools {
  display: flex;
  align-items: center;
  gap: 2px;
  padding-bottom: 1px;
}
.composer-tools .icon-button {
  width: 34px;
  height: 34px;
  font-size: 18px;
}
.composer-input-wrap {
  min-height: 44px;
  display: flex;
  align-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 13px;
  padding: 7px 12px;
  background: var(--surface-soft);
}
.composer-input-wrap:focus-within {
  border-color: var(--primary);
  background: var(--surface);
}
.composer textarea {
  width: 100%;
  max-height: 136px;
  min-height: 26px;
  border: 0;
  outline: 0;
  resize: none;
  color: var(--text);
  background: transparent;
  line-height: 1.55;
}
.send-button {
  min-height: 43px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 0;
  border-radius: 12px;
  padding: 0 16px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #4e62ee);
  cursor: pointer;
  font-size: 17px;
}
.send-button b {
  font-size: 12px;
}
.upload-progress {
  position: absolute;
  left: 0;
  right: 0;
  top: -35px;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-top: 1px solid var(--line);
  background: var(--surface);
  color: var(--text-soft);
  font-size: 10px;
}
.upload-progress > div {
  height: 5px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--surface-strong);
}
.upload-progress i {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--primary);
  transition: width 0.15s linear;
}

.content-view {
  min-width: 0;
  min-height: 0;
  flex: 1;
  overflow-y: auto;
  padding: clamp(22px, 4vw, 52px);
  background: var(--surface-soft);
}
.content-shell {
  width: min(900px, 100%);
  margin: 0 auto;
}
.content-hero {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-bottom: 25px;
}
.content-hero h2 {
  margin: 0;
  font-size: 28px;
  letter-spacing: -0.04em;
}
.content-hero p {
  margin: 7px 0 0;
  color: var(--text-soft);
  font-size: 13px;
}
.content-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}
.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 15px;
}
.info-tile {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--surface);
}
.info-tile > span:first-child {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: var(--primary);
  background: var(--primary-soft);
  font-size: 20px;
}
.info-tile b {
  display: block;
  font-size: 13px;
}
.info-tile small {
  display: block;
  margin-top: 4px;
  color: var(--text-soft);
  font-size: 11px;
}
.settings-layout {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 17px;
}
.settings-nav {
  display: grid;
  align-content: start;
  gap: 5px;
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
}
.settings-nav button {
  display: flex;
  align-items: center;
  gap: 9px;
  border: 0;
  border-radius: 11px;
  padding: 11px 12px;
  color: var(--text-soft);
  background: transparent;
  cursor: pointer;
  text-align: left;
  font-size: 12px;
  font-weight: 750;
}
.settings-nav button.active {
  color: var(--primary);
  background: var(--primary-soft);
}
.settings-panel {
  display: grid;
  gap: 14px;
}
.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}
.setting-row:last-child {
  border-bottom: 0;
}
.setting-row b {
  display: block;
  font-size: 13px;
}
.setting-row small {
  display: block;
  margin-top: 4px;
  color: var(--text-soft);
  font-size: 11px;
}
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  border-radius: 999px;
  color: var(--success);
  background: color-mix(in srgb, var(--success) 12%, transparent);
  font-size: 10px;
  font-weight: 850;
}
.status-pill::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
}
.status-pill.offline {
  color: var(--danger);
}
.switch {
  width: 44px;
  height: 25px;
  position: relative;
  display: inline-block;
}
.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.switch i {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: var(--line-strong);
  cursor: pointer;
  transition: 0.2s;
}
.switch i::before {
  content: "";
  position: absolute;
  width: 19px;
  height: 19px;
  left: 3px;
  top: 3px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 8px rgba(20, 30, 50, 0.2);
  transition: 0.2s;
}
.switch input:checked + i {
  background: var(--primary);
}
.switch input:checked + i::before {
  transform: translateX(19px);
}
.debug-log {
  max-height: 330px;
  overflow: auto;
  margin: 0;
  padding: 14px;
  border-radius: 13px;
  color: #dbe7fa;
  background: #0c1320;
  font:
    11px/1.6 ui-monospace,
    SFMono-Regular,
    Menlo,
    Consolas,
    monospace;
  white-space: pre-wrap;
  word-break: break-word;
}
.request-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--surface);
}
.request-card + .request-card {
  margin-top: 10px;
}
.request-actions {
  display: flex;
  gap: 7px;
}
.request-actions button {
  min-height: 34px;
  border: 0;
  border-radius: 9px;
  padding: 0 11px;
  cursor: pointer;
  font-size: 11px;
  font-weight: 800;
}
.request-actions .accept {
  color: #fff;
  background: var(--primary);
}
.request-actions .reject {
  color: var(--text-soft);
  background: var(--surface-strong);
}

/* Dialogs and overlays */
dialog {
  color: var(--text);
}
.dialog-card {
  width: min(470px, calc(100% - 28px));
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 0;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.dialog-card::backdrop {
  background: rgba(13, 20, 33, 0.52);
  backdrop-filter: blur(5px);
}
.dialog-wide {
  width: min(650px, calc(100% - 28px));
}
.dialog-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 21px 12px;
}
.dialog-head h3 {
  margin: 0;
  font-size: 20px;
}
.quick-actions {
  display: grid;
  gap: 9px;
  padding: 8px 18px 20px;
}
.quick-actions button {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  align-items: center;
  gap: 2px 12px;
  border: 1px solid var(--line);
  border-radius: 15px;
  padding: 13px;
  color: var(--text);
  background: var(--surface);
  cursor: pointer;
  text-align: left;
}
.quick-actions button:hover {
  border-color: color-mix(in srgb, var(--primary) 36%, var(--line));
  background: var(--surface-soft);
}
.quick-icon {
  grid-row: 1 / 3;
  width: 43px;
  height: 43px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  font-size: 21px;
}
.quick-icon.blue {
  color: #1d6cf4;
  background: #e9f2ff;
}
.quick-icon.purple {
  color: #7155ea;
  background: #f0edff;
}
.quick-icon.green {
  color: #18a66e;
  background: #e7f8f0;
}
.quick-actions b {
  font-size: 13px;
}
.quick-actions small {
  color: var(--text-soft);
  font-size: 10px;
}
.remote-search-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 9px;
  padding: 5px 20px 15px;
}
.search-box.large {
  margin: 0;
}
.remote-results {
  max-height: 430px;
  overflow-y: auto;
  padding: 0 14px 17px;
}
.dialog-placeholder {
  min-height: 230px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 9px;
  color: var(--text-faint);
  text-align: center;
}
.dialog-placeholder span {
  font-size: 38px;
}
.remote-result {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 11px;
  padding: 11px 8px;
  border-bottom: 1px solid var(--line);
}
.remote-result:last-child {
  border-bottom: 0;
}
.remote-result button {
  min-height: 35px;
  border: 0;
  border-radius: 9px;
  padding: 0 12px;
  color: #fff;
  background: var(--primary);
  cursor: pointer;
  font-size: 11px;
  font-weight: 800;
}
.stack-form {
  display: grid;
  gap: 15px;
  padding: 8px 21px 22px;
}
.field-help {
  margin: -4px 0 0;
  color: var(--text-soft);
  font-size: 11px;
  line-height: 1.6;
}
.profile-edit-avatar {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 12px;
  border-radius: 15px;
  background: var(--surface-soft);
}
.profile-edit-avatar b,
.profile-edit-avatar small {
  display: block;
}
.profile-edit-avatar small {
  margin-top: 4px;
  color: var(--text-soft);
  font-size: 10px;
}
.member-list {
  max-height: 520px;
  overflow-y: auto;
  padding: 3px 18px 20px;
}
.member-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 11px;
  padding: 10px 4px;
  border-bottom: 1px solid var(--line);
}
.emoji-popover {
  position: fixed;
  z-index: 40;
  width: 280px;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 3px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.emoji-popover button {
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  cursor: pointer;
  font-size: 20px;
}
.emoji-popover button:hover {
  background: var(--surface-strong);
}
.toast-container {
  position: fixed;
  z-index: 60;
  right: 22px;
  top: 22px;
  display: grid;
  gap: 9px;
  pointer-events: none;
}
.toast {
  min-width: 250px;
  max-width: 380px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 13px;
  color: var(--text);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  animation: toast-in 0.24s ease both;
  font-size: 12px;
  line-height: 1.5;
}
.toast > span {
  color: var(--success);
  font-size: 18px;
}
.toast.error > span {
  color: var(--danger);
}
@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(-8px) translateX(8px);
  }
}

.mobile-nav {
  display: none;
}

@media (max-width: 1040px) {
  :root {
    --list-width: 315px;
    --rail-width: 78px;
  }
  .app-view {
    padding: 0;
  }
  .app-frame {
    border: 0;
    border-radius: 0;
  }
  .composer-tools .icon-button:nth-child(1) {
    display: none;
  }
  .attachment-card {
    min-width: min(280px, 58vw);
  }
  .auth-layout {
    grid-template-columns: 1fr 440px;
    gap: 40px;
  }
  .auth-brand-panel h1 {
    font-size: 52px;
  }
}

@media (max-width: 820px) {
  .auth-view {
    min-height: 100svh;
    overflow: visible;
  }
  .auth-layout {
    width: min(520px, calc(100% - 24px));
    min-height: max-content;
    grid-template-columns: 1fr;
    align-items: start;
    padding: max(14px, env(safe-area-inset-top)) 0 calc(30px + env(safe-area-inset-bottom));
  }
  .auth-brand-panel {
    display: none;
  }
  .auth-card-wrap {
    justify-self: center;
  }
  .app-view {
    padding: 0;
  }
  .app-frame {
    display: block;
  }
  .rail {
    display: none;
  }
  .list-pane {
    height: calc(100dvh - 66px);
    border-right: 0;
  }
  .main-pane {
    position: fixed;
    inset: 0 0 66px;
    z-index: 10;
    display: none;
  }
  .app-view.mobile-chat-open .main-pane {
    display: flex;
  }
  .app-view.mobile-chat-open .list-pane {
    display: none;
  }
  .app-view:not(.section-chats) .main-pane {
    display: flex;
  }
  .app-view:not(.section-chats) .list-pane {
    display: none;
  }
  .mobile-nav {
    position: fixed;
    z-index: 20;
    left: 0;
    right: 0;
    bottom: 0;
    height: calc(66px + env(safe-area-inset-bottom));
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    padding: 6px 7px env(safe-area-inset-bottom);
    border-top: 1px solid var(--line);
    background: color-mix(in srgb, var(--surface) 94%, transparent);
    backdrop-filter: blur(18px);
  }
  .app-view.mobile-chat-open .mobile-nav {
    display: none;
  }
  .mobile-nav-item {
    position: relative;
    display: grid;
    place-items: center;
    align-content: center;
    gap: 2px;
    border: 0;
    color: var(--text-soft);
    background: transparent;
    font-size: 20px;
  }
  .mobile-nav-item b {
    font-size: 9px;
  }
  .mobile-nav-item.active {
    color: var(--primary);
  }
  .mobile-nav-item .nav-badge {
    top: 0;
    right: 22%;
    border-color: var(--surface);
  }
  .mobile-only {
    display: grid !important;
  }
  .chat-header {
    min-height: 64px;
    padding: 9px 11px;
  }
  .chat-actions .icon-button:nth-child(2) {
    display: none;
  }
  .messages {
    padding: 16px 12px;
  }
  .message-stack {
    max-width: 78%;
  }
  .composer {
    grid-template-columns: auto minmax(0, 1fr) auto;
    padding: 8px 9px calc(8px + env(safe-area-inset-bottom));
  }
  .composer-tools .icon-button:not(#imageBtn) {
    display: none;
  }
  .send-button {
    width: 42px;
    padding: 0;
    justify-content: center;
  }
  .send-button b {
    display: none;
  }
  .main-pane {
    background: var(--surface);
  }
  .content-view {
    padding: 22px 15px;
  }
  .content-grid,
  .settings-layout {
    grid-template-columns: 1fr;
  }
  .settings-nav {
    display: flex;
    overflow-x: auto;
  }
  .settings-nav button {
    white-space: nowrap;
  }
  .toast-container {
    left: 12px;
    right: 12px;
    top: 12px;
  }
  .toast {
    min-width: 0;
    max-width: none;
  }
  .emoji-popover {
    left: 10px !important;
    right: 10px;
    bottom: 75px !important;
    top: auto !important;
    width: auto;
    grid-template-columns: repeat(8, 1fr);
  }
}

@media (max-width: 520px) {
  .auth-card {
    padding: 22px 18px;
    border-radius: 22px;
  }
  .auth-card-head h2 {
    font-size: 25px;
  }
  .auth-tabs {
    margin-top: 21px;
  }
  .list-header {
    min-height: 74px;
  }
  .content-hero {
    align-items: flex-start;
    flex-direction: column;
  }
  .content-hero h2 {
    font-size: 24px;
  }
  .request-card {
    grid-template-columns: auto minmax(0, 1fr);
  }
  .request-actions {
    grid-column: 1 / -1;
    justify-content: flex-end;
  }
  .remote-search-form {
    grid-template-columns: 1fr;
  }
  .dialog-card {
    border-radius: 19px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* v4: chat menu, encryption keys and message management */
.chat-view {
  grid-template-rows: auto auto auto minmax(0, 1fr) auto;
}
.chat-more-menu {
  position: fixed;
  z-index: 55;
  width: min(290px, calc(100vw - 20px));
  padding: 7px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.chat-more-menu > button {
  width: 100%;
  min-height: 58px;
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  border: 0;
  border-radius: 11px;
  padding: 8px 10px;
  color: var(--text);
  background: transparent;
  cursor: pointer;
  text-align: left;
}
.chat-more-menu > button:hover {
  background: var(--surface-soft);
}
.chat-more-menu > button > span:first-child {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: var(--primary);
  background: var(--primary-soft);
  font-size: 18px;
}
.chat-more-menu > button > span:last-child {
  min-width: 0;
  display: grid;
  gap: 3px;
}
.chat-more-menu b {
  font-size: 12px;
}
.chat-more-menu small {
  overflow: hidden;
  color: var(--text-soft);
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.chat-more-menu > button.danger > span:first-child {
  color: var(--danger);
  background: color-mix(in srgb, var(--danger) 11%, transparent);
}
.chat-more-menu > button.danger b {
  color: var(--danger);
}

.message-selection-bar {
  min-height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 9px 18px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--primary-soft) 60%, var(--surface));
}
.message-selection-bar > span {
  min-width: 0;
  display: grid;
  gap: 2px;
}
.message-selection-bar b {
  font-size: 12px;
}
.message-selection-bar small {
  color: var(--text-soft);
  font-size: 10px;
}
.message-selection-bar > div {
  display: flex;
  gap: 8px;
}
.danger-button {
  min-height: 43px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 12px;
  padding: 0 16px;
  color: #fff;
  background: var(--danger);
  cursor: pointer;
  font-weight: 800;
}
.danger-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}
.chat-view.selection-active .composer {
  opacity: 0.42;
  pointer-events: none;
}
.message-row.selecting {
  cursor: pointer;
  transition: 0.15s ease;
}
.message-row.selecting:hover {
  transform: translateY(-1px);
}
.message-row.selected .message-bubble {
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 26%, transparent);
}
.message-row.not-selectable {
  cursor: not-allowed;
  opacity: 0.56;
}
.message-selector {
  flex: 0 0 auto;
  width: 23px;
  height: 23px;
  display: grid;
  place-items: center;
  align-self: center;
  border: 1.5px solid var(--line-strong);
  border-radius: 50%;
  padding: 3px;
  color: #fff;
  background: var(--surface);
  cursor: pointer;
  font-size: 14px;
}
.message-row.selected .message-selector {
  border-color: var(--primary);
  background: var(--primary);
}
.encrypted-message {
  min-width: min(300px, 56vw);
  display: flex;
  align-items: center;
  gap: 10px;
}
.encrypted-message > svg {
  flex: 0 0 auto;
  font-size: 23px;
}
.encrypted-message > span {
  display: grid;
  gap: 2px;
}
.encrypted-message b {
  font-size: 12px;
}
.encrypted-message small {
  opacity: 0.76;
  font-size: 9px;
  line-height: 1.5;
}
.message-bubble.encrypted-failed {
  border-style: dashed;
}

.key-dialog {
  width: min(580px, calc(100% - 28px));
}
.key-security-note {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding: 13px;
  border: 1px solid color-mix(in srgb, var(--primary) 18%, var(--line));
  border-radius: 14px;
  background: var(--primary-soft);
}
.key-security-note > span {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: var(--primary);
  background: var(--surface);
  font-size: 21px;
}
.key-security-note p {
  margin: 0;
  display: grid;
  gap: 4px;
}
.key-security-note b {
  font-size: 12px;
}
.key-security-note small {
  color: var(--text-soft);
  font-size: 10px;
  line-height: 1.6;
}
.key-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 3px;
}
.key-section-head > span {
  display: grid;
  gap: 3px;
}
.key-section-head b {
  font-size: 13px;
}
.key-section-head small {
  color: var(--text-soft);
  font-size: 10px;
}
.peer-key-list {
  max-height: 285px;
  display: grid;
  gap: 9px;
  overflow-y: auto;
}
.peer-key-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface-soft);
}
.peer-key-row .input-shell {
  min-height: 43px;
}
.peer-key-enabled {
  display: grid;
  justify-items: center;
  gap: 3px;
  color: var(--text-soft);
  cursor: pointer;
  font-size: 9px;
}
.peer-key-enabled input {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
}
.peer-key-remove.danger {
  color: var(--danger);
}
.key-dialog-actions {
  justify-content: space-between;
  align-items: center;
  padding-top: 3px;
}
.danger-text {
  color: var(--danger);
}

@media (max-width: 820px) {
  .chat-more-menu {
    width: min(300px, calc(100vw - 18px));
  }
  .message-selection-bar {
    min-height: 58px;
    padding: 8px 10px;
  }
  .message-selection-bar small {
    display: none;
  }
  .message-selection-bar .secondary-button,
  .message-selection-bar .danger-button {
    min-height: 38px;
    padding: 0 11px;
    font-size: 11px;
  }
  .message-selector {
    width: 21px;
    height: 21px;
  }
  .encrypted-message {
    min-width: min(250px, 64vw);
  }
}

@media (max-width: 520px) {
  .peer-key-row {
    grid-template-columns: minmax(0, 1fr) auto;
  }
  .peer-key-enabled {
    grid-column: 1 / -1;
    display: flex;
    justify-items: initial;
    align-items: center;
    gap: 6px;
  }
  .key-dialog-actions {
    align-items: stretch;
    flex-direction: column-reverse;
  }
  .key-dialog-actions > button {
    width: 100%;
  }
}

/* v5.1.4: 固定聊天区域所在的网格行。
   搜索栏隐藏时不再让消息列表占用 auto 行并把输入区挤出视口。 */
.chat-view {
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  overflow: hidden;
}
.chat-header {
  grid-row: 1;
}
.message-search-bar {
  grid-row: 2;
}
.messages {
  grid-row: 3;
}
.composer {
  grid-row: 4;
}
.message-row {
  position: relative;
  align-items: flex-start;
}
.message-stack {
  position: relative;
  min-width: 0;
}
.message-sender {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0 0 4px 4px;
  color: var(--text-soft);
  font-size: 10px;
  font-weight: 700;
}
.message-row.mine .message-sender {
  justify-content: flex-end;
  margin: 0 4px 4px 0;
}
.message-sender .self-label {
  color: var(--primary);
  font-weight: 800;
}
.message-row.mine .message-sender .self-label {
  color: var(--primary);
}
.message-meta-line {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  margin-top: 4px;
  color: var(--text-faint);
  font-size: 9px;
  white-space: nowrap;
}
.message-row.mine .message-meta-line {
  color: color-mix(in srgb, #fff 78%, transparent);
}
.message-read-state {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-weight: 800;
}
.message-read-state.read {
  color: var(--success);
}
.message-row.mine .message-read-state.read {
  color: #dfffea;
}
.message-read-state.unread {
  opacity: 0.82;
}
.message-menu-button {
  position: absolute;
  z-index: 3;
  top: 19px;
  right: -31px;
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 9px;
  color: var(--text-soft);
  background: transparent;
  cursor: pointer;
  opacity: 0;
  transform: translateX(-3px);
  transition: 0.15s ease;
}
.message-row.mine .message-menu-button {
  right: auto;
  left: -31px;
}
.message-row:hover .message-menu-button,
.message-menu-button:focus-visible,
.message-menu-button.menu-open {
  opacity: 1;
  transform: none;
  background: var(--surface-soft);
}
.message-action-menu {
  position: fixed;
  z-index: 70;
  min-width: 132px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.message-action-menu button {
  width: 100%;
  min-height: 39px;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 0;
  border-radius: 9px;
  padding: 0 11px;
  color: var(--text);
  background: transparent;
  cursor: pointer;
  font-size: 12px;
  text-align: left;
}
.message-action-menu button:hover {
  background: var(--surface-soft);
}
.message-action-menu button > span {
  width: 18px;
  display: grid;
  place-items: center;
  color: var(--primary);
}
.message-action-menu button.danger {
  color: var(--danger);
}
.message-action-menu button.danger > span {
  color: var(--danger);
}
.message-action-menu button:disabled {
  cursor: not-allowed;
  opacity: 0.38;
}
.message-action-menu button:disabled:hover {
  background: transparent;
}
.message-quote {
  min-width: min(290px, 56vw);
  display: grid;
  gap: 3px;
  margin: -2px -3px 8px;
  padding: 7px 9px;
  border-left: 3px solid var(--primary);
  border-radius: 7px;
  color: var(--text-soft);
  background: color-mix(in srgb, var(--primary-soft) 62%, transparent);
  font-size: 10px;
  line-height: 1.45;
}
.message-row.mine .message-quote {
  border-left-color: rgba(255, 255, 255, 0.8);
  color: rgba(255, 255, 255, 0.84);
  background: rgba(255, 255, 255, 0.12);
}
.message-quote b {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.message-quote small {
  display: -webkit-box;
  overflow: hidden;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.reply-preview {
  grid-column: 1 / -1;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: -3px 0 2px;
  padding: 8px 10px;
  border-left: 3px solid var(--primary);
  border-radius: 9px;
  background: var(--primary-soft);
}
.reply-preview > span {
  min-width: 0;
  display: grid;
  gap: 2px;
}
.reply-preview b {
  color: var(--primary);
  font-size: 10px;
}
.reply-preview small {
  overflow: hidden;
  color: var(--text-soft);
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.reply-preview .icon-button {
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
}
.revoked-summary {
  width: fit-content;
  max-width: 76%;
  margin: 12px auto;
  padding: 7px 11px;
  border-radius: 999px;
  color: var(--text-soft);
  background: var(--surface-soft);
  font-size: 10px;
  text-align: center;
}
.danger-note {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding: 13px;
  border: 1px solid color-mix(in srgb, var(--danger) 24%, var(--line));
  border-radius: 14px;
  background: color-mix(in srgb, var(--danger) 7%, var(--surface));
}
.danger-note > span {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: var(--danger);
  background: var(--surface);
  font-size: 20px;
}
.danger-note p {
  margin: 0;
  display: grid;
  gap: 3px;
}
.danger-note b {
  font-size: 12px;
}
.danger-note small {
  color: var(--text-soft);
  font-size: 10px;
  line-height: 1.55;
}
.forward-list {
  max-height: min(58vh, 520px);
  display: grid;
  gap: 5px;
  margin-top: 12px;
  overflow-y: auto;
}
.forward-item {
  width: 100%;
  min-height: 62px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  border: 0;
  border-radius: 13px;
  padding: 8px 10px;
  color: var(--text);
  background: transparent;
  cursor: pointer;
  text-align: left;
}
.forward-item:hover {
  background: var(--surface-soft);
}
.forward-item > span:last-child {
  color: var(--primary);
}
.forward-empty {
  padding: 30px 12px;
  color: var(--text-soft);
  text-align: center;
}

@media (max-width: 820px) {
  .message-menu-button {
    top: 17px;
    opacity: 1;
    background: color-mix(in srgb, var(--surface-soft) 75%, transparent);
  }
  .message-action-menu {
    min-width: 142px;
  }
  .message-quote {
    min-width: min(250px, 64vw);
  }
}


/* v5.1.5: message cache, scroll restore, drag/drop, batch forward, notifications and pins */
.messages.is-positioning {
  visibility: hidden;
}
.conversation-item .conversation-pin {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: var(--text-faint);
  opacity: 0;
  cursor: pointer;
  transition: 0.16s ease;
}
.conversation-item:hover .conversation-pin,
.conversation-item:focus-visible .conversation-pin,
.conversation-item.pinned .conversation-pin {
  opacity: 1;
}
.conversation-item .conversation-pin:hover {
  color: var(--primary);
  background: var(--primary-soft);
}
.conversation-item.pinned .conversation-pin {
  color: var(--primary);
}
.conversation-item.pinned .item-title::after {
  content: "置顶";
  margin-left: 6px;
  padding: 2px 5px;
  border-radius: 6px;
  color: var(--primary);
  background: var(--primary-soft);
  font-size: 8px;
  font-weight: 850;
  vertical-align: 1px;
}
.drop-overlay {
  position: absolute;
  inset: 74px 14px 92px;
  z-index: 48;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 9px;
  border: 2px dashed color-mix(in srgb, var(--primary) 52%, var(--line));
  border-radius: 20px;
  color: var(--primary);
  background: color-mix(in srgb, var(--surface) 90%, var(--primary-soft));
  box-shadow: var(--shadow);
  pointer-events: none;
}
.drop-overlay > span {
  font-size: 38px;
}
.drop-overlay b {
  font-size: 16px;
}
.drop-overlay small {
  color: var(--text-soft);
  font-size: 11px;
}
.forward-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.forward-actions > span {
  color: var(--text-soft);
  font-size: 11px;
}
.forward-item {
  position: relative;
}
.forward-item.selected {
  background: var(--primary-soft);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--primary) 34%, var(--line));
}
.forward-check {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: transparent;
  background: var(--surface);
}
.forward-item.selected .forward-check {
  border-color: var(--primary);
  color: #fff;
  background: var(--primary);
}
.setting-permission {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-soft);
  font-size: 10px;
}
@media (max-width: 820px) {
  .conversation-item .conversation-pin { opacity: 1; }
  .drop-overlay { inset: 68px 8px 84px; }
  .forward-actions { align-items: stretch; flex-direction: column; }
  .forward-actions .primary-button { width: 100%; }
}

/* v5.1.6: reconnect/history/read/image reliability */
.picture-placeholder.has-error {
  color: var(--danger);
  outline: 1px solid color-mix(in srgb, var(--danger) 28%, transparent);
}
.picture-placeholder.has-error small {
  color: currentColor;
  opacity: 0.78;
}