.se_item_container {
    color-scheme: light;
    --bg: #f5f7fb;
    --panel: #ffffff;
    --text: #1f2937;
    --muted: #6b7280;
    --line: #e5e7eb;
    --accent: #2563eb;
    --accent-dark: #1d4ed8;
    --radius: 18px;
    --shadow: 0 18px 45px rgba(15, 23, 42, 0.10);
}

.player {
    width: min(100%, 720px);
    background: var(--panel);
    border: 1px solid rgba(229, 231, 235, 0.9);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.player__header {
    padding: 28px 28px 18px;
}

.player__eyebrow {
    margin: 0 0 8px;
    color: var(--accent);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.player__title {
    margin: 0;
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    line-height: 1.2;
}

.player__description {
    margin: 10px 0 0;
    color: var(--muted);
    line-height: 1.7;
}

.now-playing {
    padding: 0 28px 24px;
}

.now-playing__label {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-size: 0.82rem;
}

.now-playing__name {
    margin: 0 0 16px;
    font-size: 1.08rem;
    font-weight: 700;
    overflow-wrap: anywhere;
}

audio {
    width: 100%;
    display: block;
}

.playlist {
    border-top: 1px solid var(--line);
}

.playlist__heading {
    margin: 0;
    padding: 18px 28px 10px;
    font-size: 0.9rem;
    color: var(--muted);
}

.playlist__list {
    margin: 0;
    padding: 0 14px 18px;
    list-style: none;
}

.track-button {
    width: 100%;
    display: grid;
    grid-template-columns: 44px 1fr auto;
    align-items: center;
    gap: 12px;
    border: 0;
    border-radius: 12px;
    padding: 12px 14px;
    background: transparent;
    color: inherit;
    text-align: left;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.track-button:hover {
    background: #f8fafc;
}

.track-button:focus-visible {
    outline: 3px solid rgba(37, 99, 235, 0.28);
    outline-offset: 2px;
}

.track-button.is-active {
    background: #eff6ff;
}

.track-button__number {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #eef2ff;
    color: var(--accent);
    font-weight: 800;
    font-size: 0.9rem;
}

.track-button.is-active .track-button__number {
    background: var(--accent);
    color: #fff;
}

.track-button__text {
    min-width: 0;
}

.track-button__title {
    display: block;
    font-weight: 700;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.track-button__file {
    display: block;
    margin-top: 3px;
    color: var(--muted);
    font-size: 0.8rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.track-button__action {
    color: var(--accent);
    font-size: 0.84rem;
    font-weight: 700;
}

.player__footer {
    padding: 0 28px 24px;
    color: var(--muted);
    font-size: 0.78rem;
    line-height: 1.6;
}

@media (max-width: 560px) {
    body {
    padding: 12px;
    }

    .player__header,
    .now-playing {
    padding-left: 20px;
    padding-right: 20px;
    }

    .playlist__heading {
    padding-left: 20px;
    padding-right: 20px;
    }

    .track-button {
    grid-template-columns: 40px 1fr;
    }

    .track-button__action {
    display: none;
    }

    .player__footer {
    padding-left: 20px;
    padding-right: 20px;
    }
}