* {
  box-sizing: border-box;
}

.app {
  width: min(1100px, 100%);
  margin: 0 auto;
  padding: 1rem;
  display: grid;
  gap: 1rem;
}

.app-header h1 {
  margin: 0;
  font-size: 1.6rem;
}

.app-header p {
  margin: 0.25rem 0 0;
  color: var(--muted);
}

.theme-switcher {
  display: grid;
  gap: 0.4rem;
}

.theme-switcher label {
  font-size: 0.9rem;
  color: var(--muted);
}

.theme-switcher select {
  border: 1px solid #334155;
  border-radius: 0.6rem;
  background: var(--panel);
  color: var(--text);
  padding: 0.65rem;
}

.theme-card {
  border: 1px solid #334155;
  border-radius: 0.8rem;
  background: color-mix(in srgb, var(--panel) 80%, var(--accent));
  overflow: hidden;
}

.theme-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.theme-content {
  padding: 0.9rem;
}

.theme-content h2 {
  margin: 0;
  font-size: 1.2rem;
}

.theme-content p {
  margin: 0.5rem 0 0;
}

.theme-count {
  font-size: 0.9rem;
  color: var(--muted);
}

.sounds-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sound-button {
  border: 0;
  width: 100%;
  min-height: 92px;
  border-radius: 0.8rem;
  text-align: left;
  padding: 0.8rem;
  color: #fff;
  background: color-mix(in srgb, var(--sound-color, var(--accent)) 75%, #000);
  transition: transform 120ms ease, filter 120ms ease;
  cursor: pointer;
}

.sound-button strong {
  display: block;
  font-size: 0.95rem;
}

.sound-button span {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.8rem;
  opacity: 0.9;
}

.sound-button.is-active {
  transform: scale(0.96);
  filter: brightness(1.2);
}

.status {
  margin: 0;
  min-height: 1.25rem;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (min-width: 700px) {
  .app {
    padding: 1.4rem;
    gap: 1.2rem;
  }

  .sounds-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  }
}