:root {
  --platform-topbar-h: 48px;
}

/* Full-width sticky bar — Apps + Sign out on the right (sidebar apps) */
.platform-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 25;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  height: var(--platform-topbar-h);
  padding: 0 24px;
  background: var(--bg-elevated, rgba(15, 23, 34, 0.95));
  border-bottom: 1px solid var(--border, rgba(148, 163, 184, 0.2));
}

.platform-topbar__leading {
  display: none;
  align-items: center;
  gap: 4px;
  margin-right: auto;
  min-width: 0;
}

.platform-topbar__menu {
  background: none;
  border: none;
  color: inherit;
  padding: 8px;
  margin: 0;
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.platform-topbar__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  text-decoration: none;
  color: inherit;
}

.platform-topbar__brand-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Inline top bar inside page content (FinOps, Capacity, etc.) */
.platform-app-topbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  width: 100%;
  margin-bottom: 1rem;
}

.platform-app-toolbar {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
  margin-left: auto;
}

.platform-app-toolbar__signout {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--platform-menu-border, rgba(148, 163, 184, 0.35));
  border-radius: 999px;
  background: transparent;
  color: var(--platform-menu-muted, #94a3b8);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  line-height: 1;
  font-family: inherit;
}

.platform-app-toolbar__signout:hover {
  color: var(--platform-menu-text, #e2e8f0);
  border-color: var(--platform-menu-accent, #2dd4bf);
}

[data-theme="light"] .platform-app-toolbar__signout,
.platform-shell--light .platform-app-toolbar__signout,
.platform-topbar .platform-app-toolbar__signout {
  border-color: #cbd5e1;
  color: #64748b;
}

[data-theme="light"] .platform-app-toolbar__signout:hover,
.platform-shell--light .platform-app-toolbar__signout:hover,
.platform-topbar .platform-app-toolbar__signout:hover {
  background: #0f172a;
  color: #f8fafc;
  border-color: #0f172a;
}

@media (max-width: 768px) {
  .platform-topbar {
    padding: 0 16px;
  }

  .platform-topbar__leading {
    display: flex;
  }
}

/* Inside a content column (e.g. Tentacles) — not viewport-fixed */
.platform-topbar--inset {
  position: static;
  height: auto;
  min-height: var(--platform-topbar-h);
  flex-shrink: 0;
}