.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  max-width: var(--max-app-width);
  margin: 0 auto;
  width: 100%;
}

.shell {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  height: var(--header-height);
  padding: 0 var(--space-4);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.topbar__brand {
  font-weight: 800;
  font-size: var(--text-lg);
  letter-spacing: -0.03em;
  color: var(--color-text);
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.main {
  flex: 1;
  min-width: 0;
  padding-bottom: var(--space-5);
}