.song-card.hottest-glow {
         box-shadow: 0 0 15px 5px rgba(255, 165, 0, 0.7);
         /* Orange glow */
         transition: box-shadow 0.3s ease;
      }

      .song-card.hottest-color-shift {
         background: linear-gradient(to right, #ff6600, #ff0000);
         /* Orange to red gradient */
         color: white;
         /* Ensure text is readable */
         transition: background 0.3s ease;
      }

      .song-card.hottest-intense {
         box-shadow: 0 0 25px 10px rgba(255, 0, 0, 0.8);
         /* Red intense glow */
         background: linear-gradient(to right, #ff3300, #cc0000);
         /* Darker red gradient */
      }