Add pulsing music player

src/styles.css

@@ -368,15 +368,81 @@ button {
   min-height: 220px;
 }
 
+audio.hidden-audio {
+  display: none;
+}
 
-audio {
-  width: 100%;
-  max-height: 320px;
-  border-radius: 12px;
-  border: 1px solid rgba(255, 255, 255, 0.1);
-  background: #000;
+.custom-player {
+  width: min(420px, 100%);
+  min-height: 200px;
+  border-radius: 20px;
+  border: 1px solid rgba(255, 255, 255, 0.12);
+  background: radial-gradient(circle at top, rgba(61, 214, 255, 0.2), rgba(8, 12, 26, 0.9) 70%);
+  display: grid;
+  place-items: center;
+  gap: 16px;
+  padding: 20px;
   position: relative;
-  z-index: 30;
+  overflow: hidden;
+}
+
+.custom-player::after {
+  content: '';
+  position: absolute;
+  inset: 12px;
+  border-radius: 18px;
+  border: 1px solid rgba(255, 255, 255, 0.08);
+  pointer-events: none;
+}
+
+.pulse-orb {
+  width: 96px;
+  height: 96px;
+  border-radius: 50%;
+  background: radial-gradient(circle at 30% 30%, #fbd72b, #f58b2b 60%, #1d3b8b);
+  transform: scale(calc(1 + var(--pulse, 0) * 0.22));
+  box-shadow: 0 0 calc(20px + var(--pulse, 0) * 60px) rgba(251, 215, 43, 0.35);
+  transition: transform 0.08s ease-out;
+}
+
+.pulse-orb.active {
+  animation: pulseGlow 1.6s ease-in-out infinite;
+}
+
+.player-controls {
+  display: grid;
+  gap: 12px;
+  place-items: center;
+}
+
+.player-meta {
+  text-align: center;
+  font-size: 0.85rem;
+  color: rgba(255, 255, 255, 0.7);
+}
+
+.player-meta .label {
+  text-transform: uppercase;
+  letter-spacing: 0.2em;
+  font-size: 0.65rem;
+  display: block;
+}
+
+.player-meta .value {
+  display: block;
+  color: #f6f4ef;
+  font-weight: 600;
+  margin-top: 4px;
+}
+
+@keyframes pulseGlow {
+  0%,
+  100% {
+    box-shadow: 0 0 24px rgba(61, 214, 255, 0.25);
+  }
+  50% {
+    box-shadow: 0 0 48px rgba(251, 215, 43, 0.35);
+  }
 }
 
 .player-empty {