.app {
  position: relative;
  width: 100%;
  height: 100dvh;
  overflow: hidden;
}

/* Phase container — full screen, stacked */
.phase {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-slow) var(--ease-gentle);
}

.phase.active {
  opacity: 1;
  pointer-events: auto;
}

/* Progress bar — ultra thin, top of screen */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: var(--color-accent-warm);
  opacity: 0.4;
  transition: width 1s linear;
  z-index: 100;
}

/* Sound toggle — bottom right, barely visible */
.sound-toggle {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  opacity: 0.3;
  transition: opacity var(--duration-fast) var(--ease-gentle);
  z-index: 50;
}

.sound-toggle:hover,
.sound-toggle:active {
  opacity: 0.6;
}

/* Disclaimer — very subtle */
.disclaimer {
  position: fixed;
  bottom: var(--space-sm);
  left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  color: var(--color-text-muted);
  opacity: 0.3;
  text-align: center;
  z-index: 50;
  max-width: 300px;
}

.disclaimer a {
  color: var(--color-text-muted);
  text-decoration: underline;
}

@media (max-width: 480px) {
  .phase {
    padding: var(--space-lg);
  }
}