/* === MUSIC PAGE LAYOUT === */

.music-body {
    background-color: var(--bg-0);
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.music-main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 80px 20px;
}

/* Intro Section */
.page-intro {
    text-align: center;
    margin-bottom: 50px;
    animation: fadeIn 1s ease-out forwards;
}

.page-intro h1 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    color: var(--ink);
    margin-bottom: 10px;
    letter-spacing: -0.02em;
}

.page-intro p {
    color: var(--text-3);
    font-size: 1.1rem;
}

/* === TIMELINE SLIDER (New) === */
.timeline-wrapper {
    width: 100%;
    margin-bottom: 40px;
    padding: 0 0 10px 0;
    /* Clean line separation */
    border-bottom: 1px solid var(--hairline);
}

.timeline-track {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 5px; /* Space for scrollbar if visible */
    white-space: nowrap; /* Forces horizontal row */
    
    /* Hide Scrollbars */
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE/Edge */
    
    /* Smooth iOS Scroll */
    -webkit-overflow-scrolling: touch; 
}

.timeline-track::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

/* Timeline Buttons (Pill Shape) */
.time-node {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-3);
    padding: 8px 18px;
    border-radius: 100px; /* Full pill shape */
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
}

.time-node:hover {
    border-color: var(--ink);
    color: var(--ink);
}

.time-node.active {
    background-color: var(--ink);
    color: var(--bg-0);
    border-color: var(--ink);
}

/* Grid Layout */
.music-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 40px;
}

/* The Track Card */
.track-card {
    background: var(--panel-1);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 30px;
    position: relative;
    box-shadow: var(--shadow-s);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    
    opacity: 0;
    transform: translateY(28px);
    transition:
      opacity 0.6s ease,
      transform 0.6s ease;
    will-change: opacity, transform;
}

/* When revealed */
.track-card.is-visible {
    opacity: 1;
    transform: translateY(0);
  }

/* Hidden state for filtering */
.track-card.hidden {
    display: none; 
}

/* Hover Effects */
.track-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-m);
    border-color: var(--border-2);
}

/* Card Header Info */
.track-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.period-badge {
    background-color: var(--accent);
    color: var(--bg-0);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 4px 10px;
    border-radius: 4px;
    font-weight: 600;
}

.track-year {
    font-family: var(--font-serif);
    color: var(--text-3);
    font-style: italic;
    font-size: 0.9rem;
}

/* Titles and Text */
.track-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--ink);
    margin: 0 0 16px 0;
    line-height: 1.2;
}

.track-description {
    margin-bottom: 24px;
}

.track-description p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-2);
    margin: 0;
}

/* Spotify Embed Wrapper */
.spotify-wrapper {
    margin-top: auto; /* Pushes to bottom */
    border-top: 1px solid var(--border);
    padding-top: 20px;
    margin-bottom: 20px;
}

/* === RELATED ESSAY LINK === */
.essay-link {
    display: block;
    text-decoration: none;
    padding-top: 16px;
    border-top: 1px solid var(--hairline);
    transition: opacity 0.2s ease;
    position: relative; 
    z-index: 10;
    cursor: pointer;
}

.essay-link:hover {
    opacity: 0.7;
}

.link-label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-3);
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.link-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-serif);
    font-size: 1rem;
    color: var(--ink);
    font-weight: 500;
}

.link-title i {
    font-size: 0.8rem;
    transform: rotate(-45deg);
    transition: transform 0.2s;
    color: var(--text-3);
}

.essay-link:hover .link-title i {
    transform: rotate(0deg);
    color: var(--ink);
}

/* Fade In Keyframe */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .music-grid {
        grid-template-columns: 1fr;
    }
    .track-card {
        padding: 20px;
    }
    
    /* Ensure slider works well on mobile */
    .timeline-track {
        padding-bottom: 0;
    }
}