/* ---------------- Body and Background ---------------- */
body {
  font-family: 'Roboto', sans-serif;
  background: radial-gradient(circle at top, #111 0%, #000 100%);
  color: #fff;
  text-align: center;
  margin: 0;
  padding: 20px;
}

/* Subtle grid overlay for arcade panel effect */
body::after {
  content: "";
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-image: linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

/* ---------------- Header Image ---------------- */
#header {
  text-align: center;
  margin-bottom: 30px;
  position: relative;
}

#header img {
  width: 20%;          /* 1/5 of screen width */
  max-width: 300px;
  min-width: 100px;
  height: auto;
  filter: drop-shadow(0 0 8px #ff3c38)
          drop-shadow(0 0 16px #ff3c38)
          drop-shadow(0 0 24px #ff3c38);
  animation: neonPulse 2s infinite alternate;
  transition: width 0.3s ease, max-width 0.3s ease;
}

/* Neon pulsing animation */
@keyframes neonPulse {
  0%, 100% {
    filter: drop-shadow(0 0 8px #ff3c38)
            drop-shadow(0 0 16px #ff3c38)
            drop-shadow(0 0 24px #ff3c38);
  }
  50% {
    filter: drop-shadow(0 0 16px #ff3c38)
            drop-shadow(0 0 32px #ff3c38)
            drop-shadow(0 0 48px #ff3c38);
  }
}

/* Responsive scaling */
@media (max-width: 768px) {
  #header img {
    width: 30%;
    max-width: 200px;
  }
}

@media (max-width: 480px) {
  #header img {
    width: 50%;
    max-width: 150px;
  }
}

/* ---------------- Soundboard Grid ---------------- */
#soundboard {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 20px;
  max-width: 1000px;
  margin: 0 auto;
}

/* ---------------- Arcade Buttons ---------------- */
.sound-btn {
  border-radius: 50px;
  padding: 18px;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.15s ease-in-out;
  box-shadow: inset 0 4px 6px rgba(255, 255, 255, 0.2),
              inset 0 -4px 6px rgba(0, 0, 0, 0.5),
              0 6px 12px rgba(0, 0, 0, 0.6);
  text-shadow: 1px 1px 2px #000;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

/* Hover and active effects */
.sound-btn:hover {
  filter: brightness(1.3);
  transform: translateY(-3px);
  box-shadow: 0 8px 14px rgba(0,0,0,0.8), inset 0 4px 6px rgba(255,255,255,0.3);
}

.sound-btn:active {
  transform: translateY(2px);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.7);
}

/* ---------------- Responsive adjustments ---------------- */
@media (max-width: 1024px) {
  #soundboard {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 16px;
  }
  .sound-btn {
    padding: 16px;
    font-size: 0.95rem;
  }
}

@media (max-width: 768px) {
  #soundboard {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
  }
  .sound-btn {
    padding: 14px;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  #soundboard {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 10px;
  }
  .sound-btn {
    padding: 12px;
    font-size: 0.85rem;
  }
}