/* Mobile-first responsive design for Music Jukebox */

/* Base mobile styles (320px+) */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 8px;
  font-family: 'Arial', sans-serif;
  min-height: 100vh;
  background: 
    radial-gradient(circle at 20% 80%, 
      rgba(120, 119, 198, 0.3) 0%,
      transparent 50%),
    radial-gradient(circle at 80% 20%, 
      rgba(255, 119, 198, 0.3) 0%,
      transparent 50%),
    radial-gradient(circle at 40% 40%, 
      rgba(120, 219, 226, 0.2) 0%,
      transparent 50%),
    linear-gradient(135deg, 
      rgba(30, 30, 60, 1) 0%,
      rgba(20, 20, 40, 1) 50%,
      rgba(10, 10, 20, 1) 100%);
  background-attachment: fixed;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  overflow-x: hidden;
  /* Touch optimization */
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}

#jukebox {
  width: 100%;
  max-width: 360px;
  margin: 5px;
  padding: 15px;
  background: 
    linear-gradient(145deg, 
      rgba(65, 105, 225, 0.15) 0%,
      rgba(25, 25, 112, 0.25) 30%,
      rgba(0, 0, 0, 0.8) 70%,
      rgba(0, 0, 0, 0.95) 100%);
  border: 2px solid rgba(100, 149, 237, 0.4);
  border-radius: 40px 40px 12px 12px;
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.6),
    0 0 60px rgba(100, 149, 237, 0.2),
    inset 0 2px 8px rgba(100, 149, 237, 0.1),
    inset 0 -2px 8px rgba(0, 0, 0, 0.5);
  position: relative;
  overflow: hidden;
}

/* Accessibility utilities */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip link for keyboard navigation */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: #000;
  color: white;
  padding: 8px;
  text-decoration: none;
  border-radius: 4px;
  z-index: 1000;
}

.skip-link:focus {
  top: 6px;
}

/* Focus management - mobile optimized */
*:focus-visible {
  outline: 2px solid #00d4ff;
  outline-offset: 2px;
}

button:focus-visible,
[role="slider"]:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid #00d4ff;
  outline-offset: 2px;
  box-shadow: 0 0 0 1px rgba(0, 212, 255, 0.3);
}

/* Mobile-first typography */
h1 {
  margin: 0 0 15px 0;
  padding: 12px 0;
  font-size: 1.8rem;
  font-weight: 900;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 2px;
  background: 
    linear-gradient(45deg, 
      #ff1493 0%,
      #00bfff 25%,
      #ff1493 50%,
      #00bfff 75%,
      #ff1493 100%);
  background-size: 300% 300%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 
    0 0 15px rgba(255, 20, 147, 0.8),
    0 0 30px rgba(0, 191, 255, 0.6),
    2px 2px 6px rgba(0, 0, 0, 0.8);
  animation: neon-flicker 3s ease-in-out infinite alternate;
  position: relative;
  z-index: 2;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  button {
    border-width: 3px;
  }
  
  *:focus-visible {
    outline-width: 4px;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  /* Still allow focus transitions for accessibility */
  *:focus-visible {
    transition: outline 0.1s ease;
  }
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Courier New', 'Monaco', 'Lucida Console', monospace;
  margin: 0;
  padding: 20px;
  background: 
    radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3), transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3), transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.2), transparent 50%),
    linear-gradient(135deg, #0f0f0f 0%, #1a1a2e 50%, #16213e 100%);
  background-attachment: fixed;
  color: #fff;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Retro neon glow animation */
@keyframes neonGlow {
  0%, 100% {
    text-shadow: 
      0 0 5px #00d4ff,
      0 0 10px #00d4ff,
      0 0 20px #00d4ff,
      0 0 40px #00d4ff;
  }
  50% {
    text-shadow: 
      0 0 10px #00d4ff,
      0 0 20px #00d4ff,
      0 0 30px #00d4ff,
      0 0 60px #00d4ff;
  }
}

#jukebox {
  max-width: 650px;
  margin: 0 auto;
  position: relative;
  
  /* Retro jukebox shape with curved top */
  background: 
    linear-gradient(180deg, #2c3e50 0%, #34495e 60%, #2c3e50 100%);
  border-radius: 60px 60px 20px 20px;
  padding: 40px 35px 35px 35px;
  
  /* Vintage chrome border effect */
  border: 8px solid transparent;
  background-clip: padding-box;
  box-shadow: 
    /* Main shadow */
    0 20px 60px rgba(0, 0, 0, 0.6),
    /* Inner chrome effect */
    inset 0 0 0 3px rgba(255, 255, 255, 0.1),
    inset 0 0 0 6px rgba(0, 0, 0, 0.3),
    /* Outer chrome border */
    0 0 0 2px #4a5568,
    0 0 0 4px #2d3748,
    0 0 0 6px #1a202c,
    /* Neon glow accent */
    0 0 30px rgba(0, 212, 255, 0.3),
    0 0 60px rgba(0, 212, 255, 0.1);
}

/* Retro chrome top accent */
#jukebox::before {
  content: '';
  position: absolute;
  top: -4px;
  left: -4px;
  right: -4px;
  height: 80px;
  background: 
    linear-gradient(180deg, 
      rgba(255, 255, 255, 0.3) 0%,
      rgba(255, 255, 255, 0.1) 30%,
      rgba(0, 0, 0, 0.1) 70%,
      transparent 100%);
  border-radius: 64px 64px 0 0;
  z-index: -1;
}

/* Vintage speaker grille effect */
#jukebox::after {
  content: '';
  position: absolute;
  top: 20px;
  left: 20px;
  right: 20px;
  height: 40px;
  background: 
    radial-gradient(circle, rgba(0, 0, 0, 0.8) 1px, transparent 1px);
  background-size: 8px 8px;
  border-radius: 20px;
  opacity: 0.3;
  z-index: 0;
}

h1 {
  text-align: center;
  margin: 0 0 40px 0;
  font-size: 3rem;
  font-weight: 900;
  font-family: 'Impact', 'Arial Black', sans-serif;
  letter-spacing: 3px;
  text-transform: uppercase;
  position: relative;
  z-index: 1;
  
  /* Retro neon sign effect */
  color: #00d4ff;
  text-shadow: 
    0 0 5px #00d4ff,
    0 0 10px #00d4ff,
    0 0 20px #00d4ff,
    0 0 40px #00d4ff,
    0 0 80px #00d4ff;
  
  animation: neonGlow 3s ease-in-out infinite alternate;
  
  /* Chrome text effect */
  background: linear-gradient(180deg, #00f5ff 0%, #0080ff 50%, #0040ff 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.8));
}

/* Retro sign backing */
h1::before {
  content: '';
  position: absolute;
  top: -10px;
  left: -20px;
  right: -20px;
  bottom: -10px;
  background: 
    linear-gradient(145deg, rgba(0, 0, 0, 0.8), rgba(20, 20, 20, 0.9));
  border-radius: 15px;
  border: 2px solid rgba(0, 212, 255, 0.3);
  z-index: -1;
  box-shadow: 
    inset 0 0 20px rgba(0, 212, 255, 0.1),
    0 0 30px rgba(0, 0, 0, 0.8);
}

/* Mobile-first song list */
#song-list {
  list-style: none;
  padding: 10px;
  margin: 0 0 15px 0;
  max-height: 250px;
  overflow-y: auto;
  background: 
    radial-gradient(circle at center, 
      rgba(255, 215, 0, 0.1) 0%,
      rgba(255, 215, 0, 0.05) 50%,
      transparent 100%),
    linear-gradient(145deg, 
      rgba(139, 69, 19, 0.8) 0%,
      rgba(101, 67, 33, 0.9) 50%,
      rgba(70, 42, 13, 0.95) 100%);
  border: 2px solid #d4af37;
  border-radius: 12px;
  box-shadow: 
    inset 0 1px 6px rgba(212, 175, 55, 0.3),
    inset 0 -1px 6px rgba(0, 0, 0, 0.5),
    0 3px 12px rgba(0, 0, 0, 0.4);
}

#song-list li {
  margin: 4px 0;
}

#song-list button {
  position: relative;
  width: 100%;
  padding: 10px 12px;
  background: 
    linear-gradient(145deg, 
      rgba(218, 165, 32, 0.9) 0%,
      rgba(184, 134, 11, 0.95) 50%,
      rgba(139, 101, 8, 1) 100%);
  color: #fff;
  border: 1px solid #d4af37;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.7);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: left;
  box-shadow: 
    0 2px 6px rgba(0, 0, 0, 0.3),
    inset 0 1px 2px rgba(255, 255, 255, 0.2),
    inset 0 -1px 2px rgba(0, 0, 0, 0.3);
  overflow: hidden;
  touch-action: manipulation;
}

/* Vintage button shine effect */
#song-list button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(255, 255, 255, 0.2), 
    transparent);
  transition: left 0.5s ease;
}

#song-list button:hover {
  background: 
    linear-gradient(145deg, 
      rgba(255, 215, 0, 0.95) 0%,
      rgba(218, 165, 32, 1) 50%,
      rgba(184, 134, 11, 1) 100%);
  border-color: #ffd700;
  transform: translateY(-2px);
  box-shadow: 
    0 6px 16px rgba(0, 0, 0, 0.4),
    0 0 20px rgba(255, 215, 0, 0.3),
    inset 0 1px 3px rgba(255, 255, 255, 0.3),
    inset 0 -1px 3px rgba(0, 0, 0, 0.3);
}

#song-list button:hover::before {
  left: 100%;
}

#song-list button:focus-visible {
  background: 
    linear-gradient(145deg, 
      rgba(255, 215, 0, 0.95) 0%,
      rgba(218, 165, 32, 1) 50%,
      rgba(184, 134, 11, 1) 100%);
  border-color: #00ffff;
  transform: translateY(-2px);
  box-shadow: 
    0 6px 16px rgba(0, 0, 0, 0.4),
    0 0 25px rgba(0, 255, 255, 0.5),
    inset 0 1px 3px rgba(255, 255, 255, 0.3);
}

#song-list button.active {
  background: 
    linear-gradient(145deg, 
      rgba(255, 20, 147, 0.9) 0%,
      rgba(199, 21, 133, 0.95) 50%,
      rgba(139, 69, 19, 1) 100%);
  border-color: #ff1493;
  color: #fff;
  text-shadow: 
    0 0 8px rgba(255, 20, 147, 0.8),
    1px 1px 2px rgba(0, 0, 0, 0.9);
  box-shadow: 
    0 0 20px rgba(255, 20, 147, 0.6),
    0 0 40px rgba(255, 20, 147, 0.3),
    inset 0 1px 3px rgba(255, 255, 255, 0.2),
    inset 0 -1px 3px rgba(0, 0, 0, 0.5);
  animation: retro-glow 2s ease-in-out infinite alternate;
}

@keyframes retro-glow {
  from {
    box-shadow: 
      0 0 20px rgba(255, 20, 147, 0.6),
      0 0 40px rgba(255, 20, 147, 0.3),
      inset 0 1px 3px rgba(255, 255, 255, 0.2),
      inset 0 -1px 3px rgba(0, 0, 0, 0.5);
  }
  to {
    box-shadow: 
      0 0 30px rgba(255, 20, 147, 0.8),
      0 0 60px rgba(255, 20, 147, 0.5),
      inset 0 1px 3px rgba(255, 255, 255, 0.3),
      inset 0 -1px 3px rgba(0, 0, 0, 0.5);
  }
}

#play-all {
  position: relative;
  width: 100%;
  padding: 18px;
  background: 
    radial-gradient(ellipse at center top, 
      rgba(50, 205, 50, 0.9) 0%,
      rgba(34, 139, 34, 0.95) 50%,
      rgba(0, 100, 0, 1) 100%);
  color: #fff;
  border: 3px solid #32cd32;
  border-radius: 15px;
  font-size: 20px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  text-shadow: 
    0 0 10px rgba(50, 205, 50, 0.8),
    2px 2px 4px rgba(0, 0, 0, 0.8);
  cursor: pointer;
  margin: 25px 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    0 6px 20px rgba(0, 0, 0, 0.4),
    0 0 30px rgba(50, 205, 50, 0.3),
    inset 0 2px 5px rgba(255, 255, 255, 0.2),
    inset 0 -2px 5px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

/* Retro button pulse animation */
#play-all::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

#play-all:hover {
  background: 
    radial-gradient(ellipse at center top, 
      rgba(124, 252, 0, 0.95) 0%,
      rgba(50, 205, 50, 1) 50%,
      rgba(34, 139, 34, 1) 100%);
  border-color: #7cfc00;
  transform: translateY(-3px) scale(1.02);
  text-shadow: 
    0 0 15px rgba(124, 252, 0, 1),
    2px 2px 4px rgba(0, 0, 0, 0.9);
  box-shadow: 
    0 8px 25px rgba(0, 0, 0, 0.5),
    0 0 40px rgba(50, 205, 50, 0.6),
    inset 0 2px 8px rgba(255, 255, 255, 0.3),
    inset 0 -2px 8px rgba(0, 0, 0, 0.3);
}

#play-all:hover::before {
  width: 300px;
  height: 300px;
}

#play-all:focus-visible {
  background: 
    radial-gradient(ellipse at center top, 
      rgba(124, 252, 0, 0.95) 0%,
      rgba(50, 205, 50, 1) 50%,
      rgba(34, 139, 34, 1) 100%);
  border-color: #00ffff;
  transform: translateY(-3px) scale(1.02);
  text-shadow: 
    0 0 20px rgba(0, 255, 255, 0.8),
    2px 2px 4px rgba(0, 0, 0, 0.9);
  box-shadow: 
    0 8px 25px rgba(0, 0, 0, 0.5),
    0 0 50px rgba(0, 255, 255, 0.7);
}

#play-all.playing {
  background: 
    radial-gradient(ellipse at center top, 
      rgba(255, 69, 0, 0.95) 0%,
      rgba(220, 20, 60, 1) 50%,
      rgba(139, 0, 0, 1) 100%);
  border-color: #ff4500;
  text-shadow: 
    0 0 15px rgba(255, 69, 0, 1),
    2px 2px 4px rgba(0, 0, 0, 0.9);
  animation: retro-pulse 2s ease-in-out infinite;
}

#play-all.playing:hover {
  background: 
    radial-gradient(ellipse at center top, 
      rgba(255, 140, 0, 0.95) 0%,
      rgba(255, 69, 0, 1) 50%,
      rgba(220, 20, 60, 1) 100%);
  border-color: #ff8c00;
}

@keyframes retro-pulse {
  0%, 100% {
    box-shadow: 
      0 6px 20px rgba(0, 0, 0, 0.4),
      0 0 30px rgba(255, 69, 0, 0.4),
      inset 0 2px 5px rgba(255, 255, 255, 0.2),
      inset 0 -2px 5px rgba(0, 0, 0, 0.3);
  }
  50% {
    box-shadow: 
      0 8px 25px rgba(0, 0, 0, 0.5),
      0 0 50px rgba(255, 69, 0, 0.8),
      0 0 80px rgba(255, 69, 0, 0.4),
      inset 0 2px 8px rgba(255, 255, 255, 0.3),
      inset 0 -2px 8px rgba(0, 0, 0, 0.3);
  }
}

/* Mobile-first controls layout */
#controls {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin: 15px 0;
  padding: 15px;
  background: 
    linear-gradient(145deg, 
      rgba(47, 79, 79, 0.8) 0%,
      rgba(25, 25, 112, 0.9) 50%,
      rgba(0, 0, 0, 0.95) 100%);
  border: 2px solid #4682b4;
  border-radius: 15px;
  box-shadow: 
    inset 0 1px 6px rgba(70, 130, 180, 0.3),
    inset 0 -1px 6px rgba(0, 0, 0, 0.5),
    0 3px 12px rgba(0, 0, 0, 0.4);
}

/* Mobile-optimized volume knob */
#volume-knob {
  width: 60px;
  height: 60px;
  margin: 0 auto;
  background: 
    radial-gradient(circle at 30% 30%, 
      rgba(192, 192, 192, 0.9) 0%,
      rgba(128, 128, 128, 0.95) 40%,
      rgba(64, 64, 64, 1) 100%);
  border: 3px solid #c0c0c0;
  border-radius: 50%;
  cursor: pointer;
  position: relative;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  user-select: none;
  touch-action: manipulation;
  box-shadow: 
    0 6px 15px rgba(0, 0, 0, 0.4),
    inset 0 1px 4px rgba(255, 255, 255, 0.3),
    inset 0 -1px 4px rgba(0, 0, 0, 0.5);
}

/* Retro knob texture ridges */
#volume-knob::before {
  content: '';
  position: absolute;
  top: 10px;
  left: 10px;
  right: 10px;
  bottom: 10px;
  border-radius: 50%;
  background: 
    repeating-conic-gradient(
      from 0deg,
      rgba(255, 255, 255, 0.2) 0deg 5deg,
      rgba(0, 0, 0, 0.2) 5deg 10deg
    );
  pointer-events: none;
}

#volume-knob:hover,
#volume-knob:focus-visible {
  border-color: #ffd700;
  transform: scale(1.05);
  box-shadow: 
    0 10px 25px rgba(0, 0, 0, 0.5),
    0 0 20px rgba(255, 215, 0, 0.4),
    inset 0 2px 8px rgba(255, 255, 255, 0.4),
    inset 0 -2px 8px rgba(0, 0, 0, 0.5);
}

#volume-knob.dragging {
  border-color: #ff6347;
  transform: scale(1.1);
  box-shadow: 
    0 12px 30px rgba(0, 0, 0, 0.6),
    0 0 30px rgba(255, 99, 71, 0.6),
    inset 0 2px 10px rgba(255, 255, 255, 0.4),
    inset 0 -2px 10px rgba(0, 0, 0, 0.6);
}

/* Volume indicator pointer */
#volume-knob::after {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 25px;
  background: 
    linear-gradient(180deg, 
      rgba(255, 215, 0, 1) 0%,
      rgba(255, 140, 0, 1) 100%);
  border-radius: 3px;
  box-shadow: 
    0 0 8px rgba(255, 215, 0, 0.6),
    0 2px 4px rgba(0, 0, 0, 0.4);
}

#mute-btn {
  padding: 15px 25px;
  background: 
    linear-gradient(145deg, 
      rgba(220, 20, 60, 0.9) 0%,
      rgba(178, 34, 34, 0.95) 50%,
      rgba(139, 0, 0, 1) 100%);
  color: #fff;
  border: 3px solid #dc143c;
  border-radius: 12px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-shadow: 
    0 0 8px rgba(220, 20, 60, 0.8),
    1px 1px 2px rgba(0, 0, 0, 0.8);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    0 6px 15px rgba(0, 0, 0, 0.4),
    0 0 20px rgba(220, 20, 60, 0.3),
    inset 0 1px 3px rgba(255, 255, 255, 0.2),
    inset 0 -1px 3px rgba(0, 0, 0, 0.3);
}

#mute-btn:hover {
  background: 
    linear-gradient(145deg, 
      rgba(255, 69, 0, 0.95) 0%,
      rgba(220, 20, 60, 1) 50%,
      rgba(178, 34, 34, 1) 100%);
  border-color: #ff4500;
  transform: translateY(-2px) scale(1.05);
  text-shadow: 
    0 0 12px rgba(255, 69, 0, 1),
    1px 1px 3px rgba(0, 0, 0, 0.9);
  box-shadow: 
    0 8px 20px rgba(0, 0, 0, 0.5),
    0 0 30px rgba(255, 69, 0, 0.5),
    inset 0 1px 5px rgba(255, 255, 255, 0.3),
    inset 0 -1px 5px rgba(0, 0, 0, 0.3);
}

#mute-btn.muted {
  background: 
    linear-gradient(145deg, 
      rgba(128, 128, 128, 0.9) 0%,
      rgba(105, 105, 105, 0.95) 50%,
      rgba(64, 64, 64, 1) 100%);
  border-color: #808080;
  color: #ddd;
  text-shadow: 
    0 0 5px rgba(128, 128, 128, 0.5),
    1px 1px 2px rgba(0, 0, 0, 0.8);
  box-shadow: 
    0 4px 10px rgba(0, 0, 0, 0.3),
    inset 0 1px 2px rgba(255, 255, 255, 0.1),
    inset 0 -1px 2px rgba(0, 0, 0, 0.3);
}

#error-msg {
  margin: 20px 0;
  padding: 16px 20px;
  background: 
    linear-gradient(145deg, 
      rgba(255, 69, 0, 0.9) 0%,
      rgba(220, 20, 60, 0.95) 50%,
      rgba(139, 0, 0, 1) 100%);
  color: #fff;
  border: 3px solid #ff4500;
  border-radius: 15px;
  font-weight: 700;
  font-size: 16px;
  text-align: center;
  text-shadow: 
    0 0 10px rgba(255, 69, 0, 0.8),
    2px 2px 4px rgba(0, 0, 0, 0.8);
  text-transform: uppercase;
  letter-spacing: 1px;
  display: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    0 6px 20px rgba(0, 0, 0, 0.4),
    0 0 30px rgba(255, 69, 0, 0.4),
    inset 0 2px 5px rgba(255, 255, 255, 0.2),
    inset 0 -2px 5px rgba(0, 0, 0, 0.3);
}

#error-msg:not(:empty) {
  display: block;
  animation: retro-error-fadeIn 0.5s ease-in-out;
}

@keyframes retro-error-fadeIn {
  from {
    opacity: 0;
    transform: translateY(-15px) scale(0.9);
    box-shadow: 
      0 0 0 rgba(0, 0, 0, 0),
      0 0 0 rgba(255, 69, 0, 0);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
    box-shadow: 
      0 6px 20px rgba(0, 0, 0, 0.4),
      0 0 30px rgba(255, 69, 0, 0.4);
  }
}

/* Current song status */
#current-song {
  margin: 15px 0;
  padding: 12px 18px;
  background: 
    linear-gradient(145deg, 
      rgba(72, 61, 139, 0.2) 0%,
      rgba(138, 43, 226, 0.15) 50%,
      rgba(75, 0, 130, 0.3) 100%);
  border: 2px solid rgba(138, 43, 226, 0.5);
  border-radius: 12px;
  color: #da70d6;
  font-weight: 600;
  font-size: 15px;
  text-align: center;
  text-shadow: 
    0 0 8px rgba(218, 112, 214, 0.6),
    1px 1px 2px rgba(0, 0, 0, 0.7);
  display: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    0 4px 15px rgba(0, 0, 0, 0.3),
    0 0 20px rgba(138, 43, 226, 0.2),
    inset 0 1px 3px rgba(255, 255, 255, 0.1),
    inset 0 -1px 3px rgba(0, 0, 0, 0.2);
}

#current-song:not(:empty) {
  display: block;
  animation: statusFadeIn 0.3s ease-in-out;
}

@keyframes statusFadeIn {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Retro scrollbar styling */
#song-list::-webkit-scrollbar {
  width: 12px;
}

#song-list::-webkit-scrollbar-track {
  background: 
    linear-gradient(180deg, 
      rgba(139, 69, 19, 0.6) 0%,
      rgba(101, 67, 33, 0.8) 50%,
      rgba(70, 42, 13, 0.9) 100%);
  border-radius: 6px;
  border: 1px solid rgba(212, 175, 55, 0.3);
}

#song-list::-webkit-scrollbar-thumb {
  background: 
    linear-gradient(180deg, 
      rgba(255, 215, 0, 0.8) 0%,
      rgba(218, 165, 32, 0.9) 50%,
      rgba(184, 134, 11, 1) 100%);
  border-radius: 6px;
  border: 1px solid #d4af37;
  box-shadow: 
    inset 0 1px 2px rgba(255, 255, 255, 0.3),
    inset 0 -1px 2px rgba(0, 0, 0, 0.3);
}

#song-list::-webkit-scrollbar-thumb:hover {
  background: 
    linear-gradient(180deg, 
      rgba(255, 215, 0, 1) 0%,
      rgba(255, 140, 0, 1) 50%,
      rgba(255, 69, 0, 1) 100%);
  box-shadow: 
    0 0 8px rgba(255, 215, 0, 0.5),
    inset 0 1px 3px rgba(255, 255, 255, 0.4),
    inset 0 -1px 3px rgba(0, 0, 0, 0.3);
}

/* Enhanced focus styles for accessibility */
button:focus-visible,
#volume-knob:focus-visible {
  outline: 3px solid #00ffff;
  outline-offset: 3px;
}

/* Enhance the neon glow for active states */
.playing-all #play-all,
#song-list button.active {
  position: relative;
}

.playing-all #play-all::after,
#song-list button.active::after {
  content: '';
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  bottom: -3px;
  background: inherit;
  border-radius: inherit;
  filter: blur(8px);
  opacity: 0.6;
  z-index: -1;
  animation: retro-aura-glow 2s ease-in-out infinite alternate;
}

@keyframes retro-aura-glow {
  from {
    filter: blur(8px);
    opacity: 0.6;
  }
  to {
    filter: blur(12px);
    opacity: 0.3;
  }
}

/* Mobile-first progressive enhancement */

/* Small mobile (landscape phones, 480px and up) */
@media (min-width: 480px) {
  body {
    padding: 12px;
  }
  
  #jukebox {
    max-width: 420px;
    margin: 10px;
    padding: 20px;
    border-radius: 45px 45px 15px 15px;
  }
  
  h1 {
    font-size: 2.2rem;
    letter-spacing: 3px;
    padding: 15px 0;
  }
  
  #song-list {
    padding: 12px;
    max-height: 280px;
  }
  
  #song-list button {
    padding: 12px 15px;
    font-size: 14px;
    border-radius: 10px;
  }
  
  #play-all {
    padding: 16px;
    font-size: 19px;
  }
}

/* Tablets (portrait, 768px and up) */
@media (min-width: 768px) {
  body {
    padding: 20px;
  }
  
  #jukebox {
    max-width: 500px;
    margin: 20px;
    padding: 30px;
    border-radius: 60px 60px 20px 20px;
  }
  
  h1 {
    font-size: 2.8rem;
    letter-spacing: 4px;
    margin-bottom: 25px;
  }
  
  #song-list {
    padding: 15px;
    max-height: 320px;
    border-radius: 15px;
    border-width: 3px;
  }
  
  #song-list button {
    padding: 14px 18px;
    font-size: 15px;
    border-radius: 12px;
    border-width: 2px;
  }
  
  #controls {
    flex-direction: row;
    justify-content: space-around;
    padding: 25px;
    border-radius: 20px;
    margin: 25px 0;
  }
  
  #volume-knob {
    width: 70px;
    height: 70px;
  }
  
  #play-all {
    padding: 18px;
    font-size: 20px;
    margin: 25px 0;
  }
}

/* Desktop (1024px and up) */
@media (min-width: 1024px) {
  #jukebox {
    max-width: 600px;
    padding: 40px;
  }
  
  h1 {
    font-size: 3.2rem;
    letter-spacing: 5px;
  }
  
  #song-list {
    max-height: 400px;
  }
  
  #volume-knob {
    width: 80px;
    height: 80px;
  }
  
  #controls {
    padding: 30px;
  }
}

/* Large desktop (1200px and up) */
@media (min-width: 1200px) {
  #jukebox {
    max-width: 700px;
  }
  
  h1 {
    font-size: 3.5rem;
  }
  
  #song-list button {
    font-size: 16px;
  }
}