.track-reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.08);
}

.track-reading-progress-bar {
    display: block;
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--accent), #ffffff);
    transition: width 0.12s linear;
}

.track-experience {
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding-top: 24px;
}

.track-hero {
    position: relative;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 24px;
    padding: 26px;
    border-radius: 20px;
    background:
        radial-gradient(circle at 0% 0%, rgba(255, 255, 255, 0.12), transparent 40%),
        linear-gradient(140deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(14px);
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.35);
}

.track-hero-cover {
    width: 100%;
    max-width: 280px;
    aspect-ratio: 1 / 1;
    border-radius: 16px;
    object-fit: cover;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 16px 34px rgba(0, 0, 0, 0.45);
}

.track-hero-meta {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}

.track-hero-kicker {
    margin: 0 0 8px;
    font-family: var(--font-display);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.72);
}

.track-hero-title {
    margin: 0 0 10px;
    line-height: 1.05;
    font-size: clamp(1.8rem, 3.4vw, 3.1rem);
    font-weight: 700;
    color: #fff;
    text-wrap: balance;
}

.track-hero-subtitle {
    margin: 0 0 16px;
    color: rgba(255, 255, 255, 0.88);
    font-size: 1rem;
}

.track-hero-subtitle a {
    color: #fff;
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.35);
}

.track-hero-subtitle a:hover {
    border-bottom-color: var(--accent);
    color: var(--accent);
}

.track-meta-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
}

.track-chip {
    padding: 5px 10px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(0, 0, 0, 0.22);
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.82rem;
    line-height: 1.2;
    white-space: nowrap;
}

.track-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.track-layout {
    display: grid;
    grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
    gap: 24px;
    align-items: start;
}

.track-sidebar {
    position: sticky;
    top: 104px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.track-card {
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.04);
    padding: 14px;
}

.track-card h3 {
    margin: 0 0 8px;
    font-size: 1rem;
    color: #fff;
}

.track-card p {
    margin: 0;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.94rem;
    line-height: 1.6;
}

.track-actions-list {
    display: grid;
    gap: 8px;
}

.track-actions-list a,
.track-actions-list button {
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.03);
    color: #fff;
    font-size: 0.9rem;
    padding: 8px 10px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.track-actions-list a:hover,
.track-actions-list button:hover {
    border-color: rgba(255, 255, 255, 0.28);
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-1px);
}

.track-embed {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.14);
}

.track-embed iframe {
    display: block;
    width: 100%;
    border: 0;
}

.track-prev-next {
    display: grid;
    gap: 8px;
}

.track-prev-next a {
    text-decoration: none;
    color: #fff;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    padding: 9px 10px;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.track-prev-next a:hover {
    background: rgba(255, 255, 255, 0.09);
    border-color: rgba(255, 255, 255, 0.25);
}

.track-reader {
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.04);
    padding: 18px;
}

.track-reader-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    position: sticky;
    top: 74px;
    z-index: 3;
    backdrop-filter: blur(8px);
    padding-bottom: 8px;
}

.track-tab {
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.04);
    color: rgba(255, 255, 255, 0.9);
    border-radius: 999px;
    padding: 8px 14px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.track-tab[aria-selected="true"] {
    background: var(--accent);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.22);
}

.track-reader-panel {
    display: none;
    animation: fadeRise 0.28s ease;
}

.track-reader-panel.active {
    display: block;
}

.track-reader-panel h2 {
    margin: 0 0 12px;
    font-size: 1.28rem;
    color: #fff;
}

.track-lyrics-content {
    line-height: 1.95;
    font-size: 1.03rem;
    color: rgba(255, 255, 255, 0.92);
    word-break: break-word;
}

.track-meaning-content,
.track-about-content {
    color: rgba(255, 255, 255, 0.88);
    line-height: 1.8;
    font-size: 1rem;
}

.track-empty-content {
    border-radius: 12px;
    border: 1px dashed rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.03);
    padding: 16px;
    color: rgba(255, 255, 255, 0.75);
}

.related-tracks {
    margin: 4px 0 4px;
    padding: 16px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.related-tracks h3 {
    margin: 0 0 12px;
    color: #fff;
    font-size: 1.05rem;
}

.related-tracks-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 10px;
}

.related-tracks-list a {
    display: block;
    text-decoration: none;
    color: #fff;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    padding: 11px 12px;
    transition: all 0.2s ease;
}

.related-tracks-list a:hover {
    background: rgba(255, 255, 255, 0.09);
    border-color: rgba(255, 255, 255, 0.26);
    transform: translateY(-1px);
}

.related-tracks-index-link {
    margin-top: 12px;
    font-size: 0.92rem;
}

.related-tracks-index-link a {
    color: var(--accent);
    text-decoration: none;
}

.related-tracks-index-link a:hover {
    text-decoration: underline;
}

.track-back-link {
    align-self: flex-start;
    margin-top: 10px;
    margin-bottom: 20px;
    min-width: clamp(220px, 24vw, 360px);
}

.track-back-link svg {
    flex-shrink: 0;
}

@keyframes fadeRise {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 1024px) {
    .track-hero {
        grid-template-columns: 220px 1fr;
        gap: 18px;
        padding: 18px;
    }

    .track-layout {
        grid-template-columns: 1fr;
    }

    .track-sidebar {
        position: static;
        order: 2;
    }

    .track-reader {
        order: 1;
    }

    .track-reader-tabs {
        top: 64px;
    }
}

@media (max-width: 680px) {
    .track-experience {
        padding-top: 28px;
    }

    .track-hero {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .track-hero-cover {
        max-width: 220px;
        margin: 0 auto;
    }

    .track-meta-chips,
    .track-hero-actions {
        justify-content: center;
    }

    .track-hero-subtitle {
        font-size: 0.95rem;
    }

    .track-reader-tabs {
        position: static;
    }

    .track-back-link {
        align-self: stretch;
        min-width: 0;
    }
}