.app-shell {
  height: 100vh;
  height: 100dvh;
  display: grid;
  grid-template-rows: 72px minmax(0, 1fr);
  padding: 14px;
  gap: 12px;
}

.topbar {
  position: relative;
  min-width: 0;
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
}

.brand {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(145deg, #101214, #3b424d);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18), 0 10px 24px rgba(17, 19, 24, 0.22);
  font-weight: 700;
}

.brand h1,
.panel h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.12;
  font-weight: 650;
}

.eyebrow {
  margin: 0 0 3px;
  color: var(--text-faint);
  font-size: 11px;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0;
}

.top-status-strip {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(150px, 190px) auto auto minmax(180px, 1fr) minmax(140px, 0.7fr);
  gap: 8px;
  align-items: center;
}

.endpoint-hidden-fields {
  display: none;
}

.top-actions {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.workbench {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, min(980px, 100%));
  justify-content: center;
  gap: 12px;
}

.app-shell.mode-lab .workbench {
  grid-template-columns: minmax(300px, 0.9fr) minmax(420px, 1.25fr) minmax(340px, 0.95fr);
  justify-content: stretch;
}

.app-shell.mode-diagnosis .workbench,
.app-shell.inspector-focus .workbench {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  justify-content: stretch;
}

.app-shell.mode-diagnosis .setup-panel,
.app-shell.inspector-focus .setup-panel {
  display: none;
}

.app-shell.mode-lab .drawer-panel {
  position: relative;
  inset: auto;
  width: auto;
  height: auto;
  transform: none;
  z-index: auto;
}

.app-shell.mode-pure .drawer-panel,
.app-shell.mode-diagnosis .drawer-panel,
.app-shell.inspector-focus .drawer-panel {
  position: fixed;
  top: 96px;
  bottom: 14px;
  z-index: 60;
  width: min(520px, calc(100vw - 28px));
  max-width: calc(100vw - 28px);
  transition: transform 260ms cubic-bezier(0.2, 0.8, 0.2, 1), opacity 180ms ease;
}

.app-shell.mode-pure .setup-panel,
.app-shell.mode-diagnosis .setup-panel,
.app-shell.inspector-focus .setup-panel {
  left: 14px;
  transform: translateX(calc(-100% - 24px));
}

.app-shell.mode-pure .evidence-panel,
.app-shell.mode-diagnosis .evidence-panel,
.app-shell.inspector-focus .evidence-panel {
  right: 14px;
  width: min(760px, calc(100vw - 28px));
  transform: translateX(calc(100% + 24px));
}

.app-shell.drawer-client-open .setup-panel,
.app-shell.drawer-inspector-open .evidence-panel {
  transform: translateX(0);
}

.app-shell.mode-diagnosis .evidence-panel,
.app-shell.inspector-focus .evidence-panel {
  position: relative;
  inset: auto;
  width: auto;
  transform: none;
}

.drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  border: 0;
  background: rgba(244, 245, 247, 0.54);
  backdrop-filter: blur(10px);
  animation: fade-in 160ms ease both;
}

.app-shell.inspector-focus .chat-panel,
.app-shell.inspector-focus .evidence-panel {
  min-width: 0;
}

.app-shell.mode-pure .chat-panel,
.app-shell.mode-diagnosis .chat-panel,
.app-shell.mode-diagnosis .evidence-panel {
  min-width: 0;
}

.panel {
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(255, 255, 255, 0.64);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
  overflow: hidden;
}

.panel-head {
  flex: 0 0 auto;
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}

.panel-head-actions {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 8px;
}

.evidence-panel {
  padding-bottom: 10px;
}

.setup-panel > :not(.panel-head),
.evidence-panel > :not(.panel-head) {
  margin-left: 16px;
  margin-right: 16px;
}

.setup-panel {
  padding-bottom: 0;
}

.setup-scroll {
  flex: 1 1 auto;
  min-height: 0;
  padding: 10px 3px 12px 0;
  overflow: auto;
}

.client-tab-panel {
  min-height: 0;
}

.client-tab-panel[hidden] {
  display: none;
}

.setup-panel > .setup-actions {
  flex: 0 0 auto;
  margin: 0;
  border-top: 1px solid var(--line);
  padding: 10px 16px;
  background: rgba(248, 249, 251, 0.92);
  box-shadow: 0 -14px 24px rgba(22, 26, 32, 0.06);
  backdrop-filter: blur(18px);
}

.chat-panel {
  gap: 0;
}

.app-shell.protocol-open .chat-panel {
  position: relative;
  z-index: 80;
  overflow: visible;
}

.conversation-list {
  flex: 1 1 auto;
  min-height: 0;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow: auto;
}

.input-dock {
  flex: 0 0 auto;
  min-height: 0;
  border-top: 1px solid var(--line);
  padding: 10px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: rgba(248, 249, 251, 0.82);
  box-shadow: 0 -14px 26px rgba(22, 26, 32, 0.05);
}

.dock-panel {
  flex: 1 1 auto;
  min-height: 0;
}

.dock-panel[hidden] {
  display: none;
}

.event-stream {
  flex: 1 1 auto;
  min-height: 0;
  margin-top: 10px;
  overflow: auto;
}

@media (max-width: 1180px) {
  body {
    overflow: hidden;
  }

  .app-shell {
    height: 100vh;
    height: 100dvh;
    min-height: 0;
    padding: 10px;
    grid-template-rows: auto minmax(0, 1fr);
  }

  .topbar {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "brand actions"
      "status status";
    gap: 8px;
  }

  .brand {
    grid-area: brand;
    min-width: 0;
    height: 40px;
  }

  .top-status-strip {
    grid-area: status;
    grid-template-columns: minmax(120px, 1fr) minmax(0, 1.1fr);
  }

  .top-status-strip .top-action,
  .top-status-strip .capability-pill,
  .top-status-strip .audio-summary {
    display: none;
  }

  .top-actions {
    grid-area: actions;
  }

  .mode-switch,
  .top-actions .connection-pill span:last-child {
    display: none;
  }

  .top-actions {
    justify-content: end;
    gap: 6px;
  }

  .top-actions .connection-pill {
    display: none;
  }

  .brand .eyebrow {
    display: none;
  }

  .brand h1 {
    white-space: nowrap;
  }

  .top-actions .top-action,
  .quick-connect-button {
    min-height: 36px;
    padding: 0 9px;
    font-size: 11px;
  }

  .workbench {
    grid-template-columns: 1fr;
  }

  .panel {
    min-height: 0;
  }

  .chat-panel {
    height: 100%;
  }

  .app-shell.mode-pure .drawer-panel,
  .app-shell.mode-lab .drawer-panel,
  .app-shell.mode-diagnosis .drawer-panel,
  .app-shell.inspector-focus .drawer-panel {
    position: fixed;
    top: 84px;
    bottom: 10px;
    width: calc(100vw - 20px);
    max-width: none;
  }

  .app-shell.mode-lab .setup-panel,
  .app-shell.mode-pure .setup-panel,
  .app-shell.mode-diagnosis .setup-panel {
    left: 10px;
    transform: translateX(calc(-100% - 20px));
  }

  .app-shell.mode-lab .evidence-panel,
  .app-shell.mode-pure .evidence-panel,
  .app-shell.mode-diagnosis .evidence-panel,
  .app-shell.inspector-focus .evidence-panel {
    right: 10px;
    transform: translateX(calc(100% + 20px));
  }

  .app-shell.drawer-client-open .setup-panel,
  .app-shell.drawer-inspector-open .evidence-panel {
    transform: translateX(0);
  }

  .app-shell.mode-diagnosis .workbench,
  .app-shell.inspector-focus .workbench {
    grid-template-columns: 1fr;
  }
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}