.chat-page {
  padding-bottom: 56px;
  overflow-x: hidden;
}

.chat-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 24px;
}

@media (max-width: 1200px) {
  .chat-hero {
    grid-template-columns: 1fr;
  }

  .chat-hero .lead {
    max-width: 100%;
  }
}

.chat-notes {
  margin: 18px 0 0;
}

.chat-hero .hero-card,
.chat-hero .status-row,
.chat-hero .status-label,
.chat-hero .status-value {
  min-width: 0;
}

.chat-hero .status-row {
  align-items: flex-start;
}

.chat-hero .status-value {
  display: block;
  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: break-word;
  white-space: normal;
}

.chat-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.chat-tab {
  border: 1px solid var(--border-color, rgba(255,255,255,0.16));
  background: var(--surface-2, rgba(255,255,255,0.04));
  color: inherit;
  min-height: 44px;
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
}

.chat-tab.active {
  background: var(--accent-soft, rgba(80,140,255,0.14));
  border-color: var(--accent-color, #5b8cff);
}

.chat-panel {
  display: none;
}

.chat-panel.active {
  display: block;
}

.chat-status-strip,
.peer-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0;
}

.offline-status-grid,
.mesh-count-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.mesh-count-grid {
  display: grid;
  gap: 12px;
  margin: 18px 0;
}

.chat-signal-status-grid,
.diagnostic-grid,
.mesh-peer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 14px 0;
}

.mesh-count-grid .mini-card,
.chat-signal-status-grid .mini-card,
.mesh-peer-grid .mini-card {
  border: 1px solid var(--border-color, rgba(255,255,255,0.12));
  background: var(--surface-2, rgba(255,255,255,0.03));
  border-radius: 8px;
  padding: 12px;
}

.mesh-count-grid span,
.chat-signal-status-grid span,
.mesh-peer-grid span {
  display: block;
  font-size: 12px;
  opacity: 0.72;
  margin-bottom: 4px;
}

.chat-status-strip .mini-card,
.peer-pill,
.fingerprint-box,
.security-card,
.transfer-item,
.diagnostic-row {
  border: 1px solid var(--border-color, rgba(255,255,255,0.12));
  background: var(--surface-2, rgba(255,255,255,0.03));
  border-radius: 8px;
  padding: 12px;
}

.diagnostic-row.ready {
  border-color: color-mix(in srgb, var(--success-color, #20a66a) 55%, var(--border-color, rgba(255,255,255,0.12)));
}

.diagnostic-row.warn {
  border-color: color-mix(in srgb, var(--warning-color, #d89000) 55%, var(--border-color, rgba(255,255,255,0.12)));
}

.diagnostic-row span,
.diagnostic-row strong {
  display: block;
}

.diagnostic-row span {
  font-size: 12px;
  opacity: 0.72;
  margin-bottom: 4px;
}

.technical-details {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border-color, rgba(255,255,255,0.12));
}

.chat-status-strip span,
.peer-pill span,
.fingerprint-box span {
  display: block;
  font-size: 12px;
  opacity: 0.72;
  margin-bottom: 4px;
}

.chat-signaling-grid {
  align-items: start;
}

.chat-protection-card {
  margin: 18px 0;
}

.chat-protection-grid {
  display: grid;
  grid-template-columns: minmax(180px, 0.65fr) minmax(220px, 1fr);
  gap: 14px;
  align-items: end;
}

.check-row {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.check-row input {
  width: 20px;
  height: 20px;
}

.chat-code-box {
  min-height: 160px;
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.chat-qr-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: start;
  margin: 12px 0 16px;
  padding: 12px;
  border: 1px solid var(--border-color, rgba(255,255,255,0.12));
  background: var(--surface-2, rgba(255,255,255,0.03));
  border-radius: 8px;
}

.chat-qr-image {
  width: 180px;
  max-width: 100%;
  height: auto;
  image-rendering: pixelated;
  border-radius: 8px;
  border: 8px solid #fff;
  background: #fff;
}

.chat-camera-panel {
  margin: 18px 0;
}

.chat-qr-video {
  width: min(100%, 520px);
  aspect-ratio: 4 / 3;
  display: block;
  border-radius: 8px;
  background: #000;
  border: 1px solid var(--border-color, rgba(255,255,255,0.12));
}

.security-card {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(220px, 0.9fr);
  gap: 16px;
  margin: 18px 0;
}

.security-card.verified {
  border-color: var(--success-color, #20a66a);
}

.fingerprint-box strong,
.fingerprint-box code {
  display: block;
  overflow-wrap: anywhere;
  line-height: 1.65;
}

.chat-messages {
  min-height: 320px;
  max-height: 520px;
  overflow: auto;
  border: 1px solid var(--border-color, rgba(255,255,255,0.12));
  border-radius: 8px;
  padding: 14px;
  background: var(--surface-2, rgba(255,255,255,0.03));
}

.chat-empty {
  padding: 18px;
  text-align: center;
  opacity: 0.82;
}

.chat-bubble {
  max-width: min(78%, 720px);
  margin: 10px 0;
  padding: 12px;
  border-radius: 8px;
  background: var(--surface-1, rgba(255,255,255,0.06));
  border: 1px solid var(--border-color, rgba(255,255,255,0.12));
}

.chat-bubble.local {
  margin-left: auto;
  background: var(--accent-soft, rgba(80,140,255,0.14));
}

.chat-bubble-meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 12px;
  opacity: 0.78;
  margin-bottom: 8px;
}

.chat-bubble-text {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  line-height: 1.55;
}

.chat-compose {
  margin-top: 14px;
}

.chat-compose textarea {
  min-height: 92px;
}

.transfer-list {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.transfer-item {
  display: grid;
  gap: 10px;
}

.transfer-progress {
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--surface-1, rgba(255,255,255,0.08));
}

.transfer-progress span {
  display: block;
  height: 100%;
  background: var(--accent-color, #5b8cff);
}

@media (max-width: 900px) {
  .chat-hero,
  .security-card {
    grid-template-columns: 1fr;
  }

  .chat-status-strip,
  .peer-list,
  .mesh-count-grid,
  .chat-signal-status-grid,
  .diagnostic-grid,
  .mesh-peer-grid,
  .chat-protection-grid,
  .chat-qr-panel {
    grid-template-columns: 1fr;
  }

  .chat-qr-image {
    width: 220px;
  }

  .chat-hero .status-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .chat-hero .status-value {
    text-align: left;
    word-break: break-all;
  }
}

@media (max-width: 640px) {
  .chat-page,
  .chat-page section,
  .chat-page article,
  .chat-page .hero-card,
  .chat-page .card,
  .chat-page .notice,
  .chat-page .tool-panel,
  .chat-hero > * {
    max-width: 100%;
    min-width: 0;
  }

  .chat-page .lead,
  .chat-page p,
  .chat-page span,
  .chat-page strong,
  .chat-page h1,
  .chat-page h2,
  .chat-page h3,
  .chat-page .btn {
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .chat-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .chat-tab {
    width: 100%;
  }

  .chat-bubble {
    max-width: 100%;
  }

  .chat-bubble-meta {
    display: block;
  }
}