right: 25px;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(220, 38, 38, 0.85) 0%, rgba(239, 68, 68, 0.75) 100%);
  backdrop-filter: blur(10px);
  border: 3px solid rgba(248, 113, 113, 0.4);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 20px;
  font-weight: bold;
  color: white;
  cursor: pointer;
  pointer-events: auto;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow:
    0 8px 16px rgba(220, 38, 38, 0.5),
    0 0 30px rgba(220, 38, 38, 0.3),
    inset 0 1px 2px rgba(255, 255, 255, 0.2);
}

#mobile-shoot-button.active {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.95) 0%, rgba(220, 38, 38, 0.9) 100%);
  transform: scale(0.92);
  box-shadow:
    0 4px 8px rgba(220, 38, 38, 0.7),
    0 0 40px rgba(220, 38, 38, 0.5),
    inset 0 -1px 2px rgba(0, 0, 0, 0.3);
}

#mobile-shoot-button::before {
  content: '\1F4A5';
  font-size: 32px;
}

#touch-indicator {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: rgba(255, 255, 255, 0.9);
  font-size: 17px;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-align: center;
  pointer-events: none;
  text-shadow:
    0 0 15px rgba(14, 165, 233, 0.8),
    0 2px 6px rgba(0, 0, 0, 0.9);
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.7) 0%, rgba(30, 41, 59, 0.6) 100%);
  backdrop-filter: blur(10px);
  padding: 20px 30px;
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  box-shadow:
    0 10px 25px rgba(0, 0, 0, 0.4),
    0 0 40px rgba(14, 165, 233, 0.2);
  animation: touchPulse 2s ease-in-out infinite;
}

@keyframes touchPulse {
  0%, 100% {
    opacity: 0.7;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.03);
  }
}

/* Mobile-specific UI adjustments */
@media (max-width: 768px), (max-height: 768px) {
  #login-form {
    padding: 40px 30px;
    max-width: 90%;
    max-height: 92vh;
  }

  #login-form h1 {
    font-size: 28px;
    margin-bottom: 10px;
    letter-spacing: 1px;
  }

  .game-tagline {
    font-size: 16px;
    margin-bottom: 15px;
  }

  #username-input {
    width: 100%;
    max-width: 300px;
    font-size: 16px;
    padding: 14px 16px;
    margin-top: 20px;
  }

  .input-hint {
    font-size: 12px;
  }

  #play-button, #settings-button {
    width: 100%;
    max-width: 300px;
  }

  .how-to-play-section {
    max-width: 300px;
    margin-left: auto;
    margin-right: auto;
  }

  .guide-tabs {
    gap: 4px;
    padding: 8px;
  }

  .guide-tab {
    font-size: 11px;
    padding: 6px 8px;
  }

  .guide-content {
    max-height: min(300px, 40vh);
    padding: 12px;
  }

  .guide-item {
    gap: 8px;