/* === OVLÁDACÍ LIŠTA PRO iOS PWA === */
.controlBar {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 20px;

  display: flex;
  justify-content: space-evenly;
  align-items: center;
  gap: 20px;

  background: rgba(0, 0, 0, 0.45);
  border: none;
  box-shadow: 0 0 24px rgba(0, 0, 0, 0.6);
  border-radius: 28px;
  padding: 22px;

  z-index: 3000;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);

  transition: opacity 0.3s ease, transform 0.3s ease;
  will-change: transform, opacity;
}

.controlBtn {
  flex: 1 1 0;
  appearance: none;
  border: none;
  background: none;
  padding: 20px 0;
  font-size: 64px;       /* zvětšené symboly */
  line-height: 1;
  color: #fff;
  cursor: pointer;
  text-align: center;
  transition: transform 0.15s ease, opacity 0.2s ease, filter 0.2s ease;
  opacity: 0.9;
}

.controlBtn:hover {
  transform: scale(1.15);
  opacity: 1;
  filter: drop-shadow(0 0 6px rgba(255,255,255,0.4));
}

.controlBtn:active {
  transform: scale(0.95);
  filter: brightness(1.2);
}

.controlBtn.secondary {
  color: #aaa;
}

@media (max-width: 640px) {
  .controlBar {
    gap: 12px;
    padding: 16px;
  }
  .controlBtn {
    font-size: 44px;
    padding: 12px 0;
  }
}