.play-btn {
            width: 44px;
            height: 44px;
            border-radius: 9999px;
            background: #4f9eff;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: transform 0.15s ease, background 0.15s ease;
        }
        .track-toggle:hover .play-btn {
            transform: scale(1.08);
        }
        .track-toggle.is-playing .play-btn {
            background: #ff9d4f;
        }