.background-music-player {
    position: fixed;
    z-index: 12000;
    left: 50%;
    bottom: max(16px, env(safe-area-inset-bottom));
    display: flex;
    max-width: min(360px, calc(100vw - 28px));
    align-items: center;
    gap: 9px;
    box-sizing: border-box;
    padding: 7px 12px 7px 8px;
    border: 1px solid color-mix(in srgb, var(--site-primary) 24%, white);
    border-radius: 999px;
    color: var(--site-text);
    background:
        linear-gradient(135deg,
            color-mix(in srgb, var(--site-surface) 94%, transparent),
            color-mix(in srgb, var(--site-body-bg) 92%, transparent));
    box-shadow:
        0 10px 28px color-mix(in srgb, var(--site-primary-deep) 18%, transparent),
        inset 0 1px 0 color-mix(in srgb, white 72%, transparent);
    backdrop-filter: blur(14px);
    transform: translateX(-50%);
}

.background-music-player[hidden] {
    display: none;
}

.background-music-player__button {
    position: relative;
    display: grid;
    width: 34px;
    height: 34px;
    flex: 0 0 34px;
    place-items: center;
    padding: 0;
    border: 0;
    border-radius: 50%;
    color: #fff;
    background: linear-gradient(135deg, var(--site-primary), var(--site-primary-deep));
    box-shadow: 0 5px 13px color-mix(in srgb, var(--site-primary) 30%, transparent);
    cursor: pointer;
}

.background-music-player__icon {
    font-size: 17px;
    line-height: 1;
    transform: translateY(-1px);
}

.background-music-player.is-playing .background-music-player__icon {
    animation: background-music-pulse 1.35s ease-in-out infinite;
}

.background-music-player.is-blocked .background-music-player__button {
    box-shadow:
        0 0 0 4px color-mix(in srgb, var(--site-accent) 20%, transparent),
        0 5px 13px color-mix(in srgb, var(--site-primary) 30%, transparent);
}

.background-music-player__copy {
    display: grid;
    min-width: 0;
    gap: 1px;
}

.background-music-player__copy small {
    color: var(--site-muted);
    font-size: 10px;
    line-height: 1.25;
}

.background-music-player__title {
    overflow: hidden;
    color: var(--site-heading);
    font-size: 12px;
    font-weight: 700;
    line-height: 1.35;
    text-overflow: ellipsis;
    white-space: nowrap;
}

@keyframes background-music-pulse {
    0%,
    100% {
        transform: translateY(-1px) scale(1);
    }
    50% {
        transform: translateY(-1px) scale(1.14);
    }
}

@media (max-width: 767px) {
    .background-music-player {
        bottom: calc(68px + env(safe-area-inset-bottom));
        max-width: calc(100vw - 22px);
        padding-right: 10px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .background-music-player.is-playing .background-music-player__icon {
        animation: none;
    }
}