html,
body {
  min-height: 100%;
}

.app {
  height: 100vh;
  height: 100dvh;
  min-height: 0;
}

.stage {
  min-height: 0;
}

.slide {
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

button,
[role="button"],
a,
input,
textarea,
select {
  touch-action: manipulation;
}

@media (max-width: 640px) {
  .app {
    padding: clamp(8px, 2.4vw, 14px);
    gap: 10px;
  }

  .topbar {
    gap: 10px;
    padding-inline: clamp(12px, 3vw, 20px);
  }

  .controls {
    gap: clamp(6px, 2vw, 12px);
  }

  .slide {
    padding: clamp(16px, 4vw, 24px);
  }
}

@media (max-width: 400px) {
  .topbar {
    flex-wrap: wrap;
  }

  .brand {
    min-width: 0;
    max-width: 100%;
    overflow-wrap: anywhere;
  }

  .controls {
    max-width: 100%;
    flex-wrap: wrap;
  }

  .nav-btn {
    min-width: 40px;
    min-height: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}