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

.app__header {
  padding: calc(18px + var(--safe-top)) 18px 0;
  min-height: calc(72px + var(--safe-top));
  flex-shrink: 0;
}

.app__main {
  flex: 1;
  padding: 8px 18px calc(var(--nav-h) + var(--safe-bottom) + 18px);
}

.app__nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--app-max);
  z-index: 100;
}