.app-body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr;
  place-items: stretch;
  padding: 0;
  background: #14110f;
}

.app-chrome {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg1) 92%, transparent);
  backdrop-filter: blur(10px);
  z-index: 2;
}

.brand {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
  min-width: 4rem;
}

.tabs {
  display: flex;
  gap: 0.35rem;
}

.tab {
  background: transparent;
  color: var(--muted);
  border: 1px solid transparent;
  padding: 0.45rem 0.9rem;
  font: inherit;
  cursor: pointer;
}

.tab:hover {
  color: var(--ink);
}

.tab.is-active {
  color: var(--accent-ink);
  background: var(--accent);
}

.pane {
  min-height: 0;
  height: 100%;
}

.pane[hidden] {
  display: none !important;
}

.frame {
  width: 100%;
  height: 100%;
  border: 0;
  background: #1a1613;
}

body.embed {
  min-height: auto;
  padding: 1.25rem 1rem 2rem;
  place-items: start center;
  background:
    radial-gradient(900px 420px at 10% -20%, #3a2f26 0%, transparent 55%),
    linear-gradient(160deg, var(--bg0), #12100e 70%);
}

body.embed .panel {
  width: min(560px, 100%);
}

.app-nav {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.app-nav .tab-link {
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--line);
  padding: 0.35rem 0.75rem;
  font-size: 0.95rem;
}

.app-nav .tab-link.is-active {
  color: var(--accent-ink);
  background: var(--accent);
  border-color: transparent;
}

@media (max-width: 640px) {
  .app-chrome {
    flex-wrap: wrap;
  }
}