/* =========================================
   CSS CUSTOM PROPERTIES (THEME VARIABLES)
   ========================================= */

:root {
    /* Light mode — maroon → black */
    --bg:              #FAFAF9;
    --text:            #1A1A1A;
    --text-secondary:  #555555;
    --text-tertiary:   #888888;
    --border:          rgba(128, 0, 32, 0.15);
    --bg-subtle:       #FFFFFF;
    --bg-subtle-2:     #F5F5F4;
    --accent:          #800020;
    --accent-light:    #A0324F;
    --accent-dark:     #4A0012;
    --accent-hover:    rgba(128, 0, 32, 0.08);
    --gold:            #B03060;
    --gold-hover:      rgba(176, 48, 96, 0.1);
    --green:           #1B4332;
    --navy:            #0A1628;
    --link-hover-border: #1A1A1A;

    /* Music page colours */
    --color-song-name: #800020;
    --color-artist-bg: #800020;
    --color-artist-text: #FFFFFF;
    --color-genre-bg: #000000;
    --color-genre-text: #FFFFFF;

    /* Glassy */
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(128, 0, 32, 0.2);
    --glass-shadow: rgba(128, 0, 32, 0.1);

    --transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

[data-theme="dark"] {
    /* Dark mode — royal blue → white */
    --bg:              #0D1117;
    --text:            #E6E6E6;
    --text-secondary:  #AAAAAA;
    --text-tertiary:   #777777;
    --border:          rgba(65, 105, 225, 0.2);
    --bg-subtle:       #161B22;
    --bg-subtle-2:     #1C2128;
    --accent:          #4169E1;
    --accent-light:    #6B8DE8;
    --accent-dark:     #002366;
    --accent-hover:    rgba(65, 105, 225, 0.1);
    --gold:            #7B9FFF;
    --gold-hover:      rgba(123, 159, 255, 0.1);
    --green:           #2A7A5A;
    --navy:            #1A3060;
    --link-hover-border: #E6E6E6;

    /* Music page colours */
    --color-song-name: #7B9FFF;
    --color-artist-bg: #002366;
    --color-artist-text: #FFFFFF;
    --color-genre-bg: #1A1A2E;
    --color-genre-text: #E6E6E6;

    /* Glassy */
    --glass-bg: rgba(13, 17, 23, 0.6);
    --glass-border: rgba(65, 105, 225, 0.2);
    --glass-shadow: rgba(65, 105, 225, 0.1);
}

/* =========================================
   0. RESET & BASE
   ========================================= */

/* Dynamic background glow layers */
body::before,
body::after {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    transition: opacity 0.6s ease;
}

/* Light mode: warm subtle glow top-left */
body::before {
    background:
        radial-gradient(ellipse 60% 40% at 15% 0%, rgba(201, 169, 110, 0.07) 0%, transparent 70%),
        radial-gradient(ellipse 40% 30% at 85% 100%, rgba(114, 47, 55, 0.04) 0%, transparent 70%);
    opacity: 1;
}

body::after {
    background:
        radial-gradient(ellipse 50% 40% at 80% 5%, rgba(91, 163, 201, 0.10) 0%, transparent 65%),
        radial-gradient(ellipse 35% 25% at 10% 90%, rgba(26, 48, 96, 0.15) 0%, transparent 65%);
    opacity: 0;
}

[data-theme="dark"] body::before {
    opacity: 0;
}

[data-theme="dark"] body::after {
    opacity: 1;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body, h1, h2, h3, h4, p, ul, ol {
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* =========================================
   1. TYPOGRAPHY
   ========================================= */

body {
    font-family: 'Inter Tight', -apple-system, sans-serif;
    font-weight: 300;
    font-size: 1rem;
    line-height: 1.7;
    letter-spacing: 0.005em;
    color: var(--text);
    background: var(--bg);
    transition: var(--transition);
}

h1 {
    font-weight: 200;
    font-size: 1.8rem;
    letter-spacing: 0.04em;
    line-height: 1.2;
}

h2 {
    font-weight: 300;
    font-size: 1.4rem;
    letter-spacing: 0.02em;
    line-height: 1.3;
    margin-bottom: 1.5rem;
}

h3 {
    font-weight: 500;
    font-size: 1.1rem;
    letter-spacing: 0.03em;
    line-height: 1.4;
}

.text-secondary {
    color: var(--text-secondary);
}

.text-caption {
    font-size: 0.8rem;
    letter-spacing: 0.02em;
    color: var(--text-secondary);
}

/* =========================================
   2. LAYOUT
   ========================================= */

body {
    max-width: 640px;
    margin: 60px auto;
    padding: 0 24px;
}

.page-content {
    min-height: 60vh;
}

/* =========================================
   3. HEADER & NAVIGATION
   ========================================= */

header {
    margin-bottom: 3rem;
}

header h1 {
    margin-bottom: 0.75rem;
}

header h1 a {
    color: var(--text);
    text-decoration: none;
    border-bottom: none;
}

header h1 a:hover {
    background: none;
}

.name-scatter {
    display: inline-block;
    cursor: pointer;
}

.name-letter {
    display: inline-block;
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.4s ease;
}

.name-letter.scattered {
    opacity: 0.3;
}

.name-letter.space {
    width: 0.25em;
}

nav {
    font-size: 0.85rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    display: flex;
    align-items: center;
    gap: 1rem;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    border-bottom: none;
    padding: 4px 0;
    position: relative;
    transition: color 0.2s;
}

nav a:hover {
    color: var(--text);
    background: none;
}

nav a.active {
    color: var(--text);
    font-weight: 500;
}

.nav-sep {
    display: none;
}

/* Theme toggle — pill switch */
#theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    vertical-align: middle;
    line-height: 1;
}

#theme-toggle:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 20px;
}

.theme-toggle__track {
    display: block;
    width: 44px;
    height: 24px;
    border-radius: 12px;
    background: var(--bg-subtle-2);
    border: 1.5px solid var(--border);
    position: relative;
    transition: background 0.3s ease, border-color 0.3s ease;
}

#theme-toggle[data-dark="true"] .theme-toggle__track {
    background: var(--accent);
    border-color: var(--accent);
}

.theme-toggle__thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), background 0.3s ease;
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

#theme-toggle[data-dark="true"] .theme-toggle__thumb {
    transform: translateX(20px);
}

.theme-toggle__icon {
    font-size: 11px;
    line-height: 1;
    position: absolute;
    transition: opacity 0.2s ease;
}

.theme-toggle__icon--light {
    opacity: 1;
    color: var(--accent);
}

.theme-toggle__icon--dark {
    opacity: 0;
    color: #1A3060;
}

#theme-toggle[data-dark="true"] .theme-toggle__icon--light {
    opacity: 0;
}

#theme-toggle[data-dark="true"] .theme-toggle__icon--dark {
    opacity: 1;
}

/* =========================================
   4. LINKS & INTERACTIONS
   ========================================= */

a {
    color: var(--text);
    text-decoration: none;
    border-bottom: 1.5px solid var(--accent);
    transition: background 0.2s, border-bottom-color 0.2s, color 0.2s;
}

a:hover {
    background: var(--accent-hover);
    border-bottom-color: var(--link-hover-border);
}

/* =========================================
   5. TELESCOPIC TEXT
   ========================================= */

.telescopic-text {
    font-size: 1.05rem;
    line-height: 1.7;
}

.telescope {
    display: inline;
}

.trigger {
    cursor: pointer;
    font-weight: 500;
    border-bottom: 1.5px solid var(--accent);
    transition: background 0.2s, border-bottom-color 0.2s;
}

.trigger:hover {
    background: var(--accent-hover);
    border-bottom-color: var(--text);
}

.content {
    display: none;
    opacity: 0;
}

.expanded > .trigger {
    display: none;
}

.expanded > .content {
    display: inline;
    animation: smoothFade 0.8s forwards;
}

@keyframes smoothFade {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* =========================================
   6. BALATRO HOLOGRAPHIC CARDS
   ========================================= */

.card-showcase {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 0 0 2rem 0;
    perspective: 800px;
}

.holo-card {
    width: 120px;
    cursor: pointer;
    transition: transform 0.35s ease;
    -webkit-tap-highlight-color: transparent;
}

.holo-card:hover {
    transform: translateY(-12px) scale(1.05);
    z-index: 10;
}

.holo-card__inner {
    position: relative;
    width: 100%;
    border-radius: 6px;
    transform-style: preserve-3d;
    transition: transform 0.15s ease, box-shadow 0.35s ease;
    box-shadow:
        0 4px 12px rgba(0, 0, 0, 0.15),
        0 0 0 1px rgba(201, 169, 110, 0.15);
}

.holo-card:hover .holo-card__inner {
    box-shadow:
        0 12px 40px rgba(0, 0, 0, 0.3),
        0 0 20px rgba(201, 169, 110, 0.2),
        0 0 60px rgba(114, 47, 55, 0.1);
}

.holo-card__front,
.holo-card__back {
    width: 100%;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.holo-card__front {
    position: relative;
    border-radius: 6px;
    overflow: hidden;
}

.holo-card__back {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    transform: rotateY(180deg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 12px 10px;
    background: linear-gradient(145deg, #1a1035 0%, #0d0a1a 50%, #1a1035 100%);
    border: 1px solid #6b4c9a;
    border-radius: 6px;
    text-align: center;
    box-shadow:
        0 0 12px rgba(107, 76, 154, 0.4),
        0 0 30px rgba(107, 76, 154, 0.15),
        inset 0 0 20px rgba(107, 76, 154, 0.08);
    animation: cardGlow 2.5s ease-in-out infinite alternate;
}

@keyframes cardGlow {
    0% {
        box-shadow:
            0 0 12px rgba(107, 76, 154, 0.4),
            0 0 30px rgba(107, 76, 154, 0.15),
            inset 0 0 20px rgba(107, 76, 154, 0.08);
        border-color: #6b4c9a;
    }
    50% {
        box-shadow:
            0 0 18px rgba(201, 169, 110, 0.5),
            0 0 40px rgba(201, 169, 110, 0.2),
            inset 0 0 25px rgba(201, 169, 110, 0.1);
        border-color: #C9A96E;
    }
    100% {
        box-shadow:
            0 0 14px rgba(114, 47, 55, 0.45),
            0 0 35px rgba(114, 47, 55, 0.18),
            inset 0 0 22px rgba(114, 47, 55, 0.08);
        border-color: #8b4050;
    }
}

.holo-card__quote {
    font-size: 0.5rem;
    font-weight: 300;
    line-height: 1.5;
    color: #d4d0e0;
    font-style: italic;
    margin-bottom: 6px;
}

.holo-card__author {
    font-size: 0.48rem;
    font-weight: 400;
    letter-spacing: 0.04em;
    color: #C9A96E;
}

.holo-card__inner img {
    display: block;
    width: 100%;
    height: auto;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    -ms-interpolation-mode: nearest-neighbor;
    pointer-events: none;
    user-select: none;
    transition: opacity 0.5s ease;
}

.holo-card__shine {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        125deg,
        transparent 0%,
        rgba(255, 100, 100, 0.12) 15%,
        rgba(255, 200, 100, 0.12) 25%,
        rgba(100, 255, 100, 0.12) 35%,
        rgba(100, 200, 255, 0.12) 50%,
        rgba(180, 100, 255, 0.12) 65%,
        rgba(255, 100, 200, 0.12) 80%,
        transparent 100%
    );
    background-size: 200% 200%;
    mix-blend-mode: color-dodge;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.holo-card:hover .holo-card__shine {
    opacity: 1;
}

.holo-card__glare {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(
        circle at 50% 50%,
        rgba(255, 255, 255, 0.25) 0%,
        rgba(255, 255, 255, 0.05) 40%,
        transparent 70%
    );
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.holo-card:hover .holo-card__glare {
    opacity: 1;
}

.holo-card--float {
    animation: cardFloat 3s ease-in-out infinite;
}

@keyframes cardFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-6px); }
}

.holo-card--float:hover {
    animation: none;
    transform: translateY(-12px) scale(1.05);
}

/* =========================================
   7. WORK CARDS
   ========================================= */

.work-intro {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.work-card {
    border: 1px solid var(--border);
    padding: 1.25rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.work-card:hover {
    border-color: var(--green);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.work-card__tag {
    display: inline-block;
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 500;
    padding: 2px 8px;
    border: 1px solid;
    margin-bottom: 0.75rem;
}

.tag--research {
    color: var(--green);
    border-color: var(--green);
}

.tag--policy {
    color: var(--navy);
    border-color: var(--navy);
}

.tag--industry {
    color: var(--accent);
    border-color: var(--accent);
}

.tag--university {
    color: var(--text-secondary);
    border-color: var(--text-secondary);
}

.work-card__title {
    font-weight: 400;
    font-size: 1.05rem;
    letter-spacing: 0.02em;
    line-height: 1.3;
    margin-bottom: 0.25rem;
}

.work-card__org {
    font-weight: 300;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.15rem;
}

.work-card__date {
    font-size: 0.75rem;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
    margin-bottom: 0.75rem;
}

.work-card__desc {
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--text-secondary);
}

/* ── Publications ── */

.work-section-title {
    margin-top: 3rem;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 400;
    letter-spacing: 0.02em;
}

.publications-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.pub-card {
    border: 1px solid var(--border);
    padding: 1.25rem;
    transition: border-color 0.3s;
}

.pub-card:hover {
    border-color: var(--green);
}

.pub-card__title {
    font-weight: 400;
    font-size: 1rem;
    line-height: 1.4;
    margin-bottom: 0.35rem;
}

.pub-card__authors {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.pub-card__venue {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 0.6rem;
}

.pub-card__link {
    display: inline-block;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent);
    border-bottom: 1px solid var(--accent);
}

/* =========================================
   8. MUSIC PAGE
   ========================================= */

.music-intro {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.music-section {
    margin-bottom: 3rem;
}

.music-section h3 {
    margin-bottom: 0.5rem;
    font-weight: 400;
    letter-spacing: 0.03em;
}

.music-subtitle {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.last-played-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    border: 1px solid var(--border);
    padding: 1rem;
}

.last-played-card__art {
    width: 80px;
    height: 80px;
    object-fit: cover;
    flex-shrink: 0;
}

.last-played-card__info {
    flex: 1;
    min-width: 0;
}

.last-played-card__track {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.last-played-card__artist {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.15rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.last-played-card__album {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-top: 0.15rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.last-played-card__status {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 3px 8px;
    border-radius: 2px;
    margin-top: 0.5rem;
    display: inline-block;
}

.last-played-card__status--playing {
    background: rgba(46, 125, 50, 0.12);
    color: #2E7D32;
}

[data-theme="dark"] .last-played-card__status--playing {
    background: rgba(42, 122, 90, 0.2);
    color: #4ab890;
}

.last-played-card__status--paused {
    background: var(--bg-subtle);
    color: var(--text-secondary);
}

.bar-chart {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.bar-chart-row {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    height: 2rem;
}

.bar-chart-row__rank {
    width: 1.5rem;
    text-align: right;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    flex-shrink: 0;
}

.bar-chart-row__label {
    min-width: 140px;
    max-width: 260px;
    font-size: 0.8rem;
    color: var(--text);
    word-wrap: break-word;
    overflow-wrap: break-word;
    white-space: normal;
    flex-shrink: 0;
    line-height: 1.4;
}

.bar-chart-row__bar-container {
    flex: 1;
    height: 1.25rem;
    background: var(--bg-subtle);
    position: relative;
    overflow: hidden;
}

.bar-chart-row__bar {
    height: 100%;
    background: var(--accent);
    width: 0;
    transition: width 0.6s ease;
}

.bar-chart-row__tooltip {
    display: none;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    background: var(--text);
    color: var(--bg);
    font-size: 0.68rem;
    letter-spacing: 0.03em;
    padding: 0.2rem 0.45rem;
    border-radius: 2px;
    white-space: nowrap;
    z-index: 20;
    pointer-events: none;
}

.bar-chart-row:hover .bar-chart-row__tooltip {
    display: block;
}

.bar-chart-row__value {
    width: 2rem;
    text-align: right;
    font-size: 0.75rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.loading-skeleton {
    background: linear-gradient(90deg, var(--bg-subtle) 25%, var(--bg-subtle-2) 50%, var(--bg-subtle) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 2px;
}

@keyframes shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.music-embed {
    border: 1px solid var(--border);
    overflow: hidden;
    margin-bottom: 1rem;
}

.music-embed iframe {
    display: block;
    width: 100%;
    border: none;
}

/* History dropdown */
.history-dropdown {
    margin-top: 0.75rem;
}

.history-toggle {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    border: none;
    border-bottom: none;
    background: none;
    padding: 0;
    user-select: none;
}

.history-toggle::-webkit-details-marker { display: none; }

.history-toggle::before {
    content: '\25B6';
    font-size: 0.6rem;
    transition: transform 0.2s ease;
}

details[open] > .history-toggle::before {
    transform: rotate(90deg);
}

.history-list {
    list-style: none;
    margin: 0.75rem 0 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.history-item__art {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    object-fit: cover;
}

.history-item__info {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    min-width: 0;
}

.history-item__track {
    font-size: 0.85rem;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-item__artist {
    font-size: 0.75rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Playlists — file drawer */
.playlist-grid {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.playlist-card {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem 0.85rem;
    border: 1px solid var(--border);
    border-bottom: none;
    background: var(--bg);
    text-decoration: none;
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.25s ease, background 0.2s;
    position: relative;
    z-index: 1;
}

.playlist-card:first-child {
    border-radius: 3px 3px 0 0;
}

.playlist-card:last-child {
    border-bottom: 1px solid var(--border);
    border-radius: 0 0 3px 3px;
}

.playlist-card:hover {
    background: var(--bg-subtle);
    transform: translateX(6px);
    box-shadow: -2px 2px 8px rgba(0, 0, 0, 0.06);
    z-index: 2;
}

.playlist-card__img {
    width: 44px;
    height: 44px;
    object-fit: cover;
    display: block;
    flex-shrink: 0;
    border-radius: 2px;
}

.playlist-card__img--placeholder {
    background: var(--bg-subtle-2);
    width: 44px;
    height: 44px;
    border-radius: 2px;
}

.playlist-card__body {
    flex: 1;
    min-width: 0;
}

.playlist-card__name {
    font-size: 0.82rem;
    color: var(--text);
    font-weight: 500;
    line-height: 1.3;
}

.playlist-card__count {
    font-size: 0.68rem;
    color: var(--text-secondary);
    margin-top: 0.1rem;
}

.playlist-card__desc {
    font-size: 0.68rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-top: 0.2rem;
}

/* Profile logo links */
.music-profiles {
    margin-top: 2rem;
    display: flex;
    gap: 1.25rem;
    align-items: center;
}

.profile-logo-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: none;
    border-bottom: none;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.04em;
    transition: color 0.2s, opacity 0.2s;
    text-transform: uppercase;
}

.profile-logo-link:hover {
    color: var(--text);
    background: none;
    border-bottom: none;
    opacity: 0.85;
}

.profile-logo {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

.music-error {
    color: var(--text-secondary);
    font-size: 0.85rem;
    padding: 1rem;
    border: 1px solid var(--border);
    text-align: center;
}

/* Genre tags */
.genre-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.genre-tag {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 4px 10px;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    background: var(--bg-subtle);
    transition: border-color 0.2s, color 0.2s;
}

.genre-tag:hover {
    border-color: var(--accent);
    color: var(--text);
}

/* ── Listening Insights ── */

.insights-headline {
    font-family: 'Menlo', 'Monaco', 'Consolas', monospace;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text);
    margin: 0;
}

.insights-headline em {
    font-style: italic;
    color: var(--accent);
    font-weight: 600;
}

.insights-dropdown {
    margin-top: 0.75rem;
}

.insights-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-top: 0.75rem;
}

.insight-card {
    padding: 0.75rem;
    border: 1px solid var(--border);
    background: var(--bg-subtle);
    transition: border-color 0.2s;
}

.insight-card:hover {
    border-color: var(--accent);
}

.insight-card__header {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 0.5rem;
}

.insight-card__icon {
    display: flex;
    align-items: center;
}

.insight-icon {
    width: 16px;
    height: 16px;
    color: var(--accent);
}

.insight-card__label {
    font-family: 'Menlo', 'Monaco', 'Consolas', monospace;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    flex: 1;
}

.insight-card__value {
    font-family: 'Menlo', 'Monaco', 'Consolas', monospace;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text);
}

.insight-card__bar-bg {
    height: 4px;
    background: var(--border);
    width: 100%;
    margin-bottom: 0.4rem;
}

.insight-card__bar {
    height: 100%;
    background: var(--accent);
    width: 0;
    transition: width 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.insight-card__desc {
    font-family: 'Menlo', 'Monaco', 'Consolas', monospace;
    font-size: 0.7rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* ── Vinyl Record Shelf ── */

.vinyl-shelf-scroll {
    display: flex;
    gap: 0.75rem;
    overflow-x: auto;
    padding: 1.5rem 0 1rem;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.vinyl-shelf-scroll::-webkit-scrollbar {
    display: none;
}

.vinyl-slot {
    flex-shrink: 0;
    width: 120px;
    text-align: center;
    animation: vinylSlideIn 0.5s ease both;
    animation-delay: calc(var(--i) * 0.08s);
}

@keyframes vinylSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.vinyl-sleeve {
    width: 110px;
    height: 110px;
    margin: 0 auto;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    position: relative;
    overflow: visible;
    box-shadow: 2px 2px 8px rgba(0,0,0,0.1);
    transition: box-shadow 0.3s;
}

[data-theme="dark"] .vinyl-sleeve {
    box-shadow: 2px 2px 12px rgba(0,0,0,0.4);
}

.vinyl-slot:hover .vinyl-sleeve {
    box-shadow: 2px 2px 16px rgba(0,0,0,0.2);
}

[data-theme="dark"] .vinyl-slot:hover .vinyl-sleeve {
    box-shadow: 2px 2px 20px rgba(0,0,0,0.6);
}

.vinyl-record {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: #111;
    position: absolute;
    left: 5px;
    top: 5px;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    z-index: 2;
}

.vinyl-slot:hover .vinyl-record {
    transform: translateY(-30px) rotate(15deg);
}

.vinyl-grooves {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: repeating-radial-gradient(
        circle,
        transparent 0px,
        transparent 2px,
        rgba(255,255,255,0.04) 2px,
        rgba(255,255,255,0.04) 3px
    );
}

.vinyl-label {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    overflow: hidden;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 2px solid #333;
}

.vinyl-label img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.vinyl-info {
    margin-top: 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.vinyl-album {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 120px;
}

.vinyl-artist {
    font-size: 0.65rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 120px;
}

/* ── Playlist Vibe Enhancements ── */

.playlist-card {
    cursor: pointer;
    position: relative;
}

.playlist-card__cover {
    position: relative;
}

.playlist-card__vibe-badge {
    position: absolute;
    bottom: 4px;
    left: 4px;
    font-size: 0.6rem;
    background: rgba(0,0,0,0.7);
    color: #fff;
    padding: 2px 6px;
    border-radius: 2px;
    letter-spacing: 0.02em;
    opacity: 0;
    transition: opacity 0.3s;
}

.playlist-card__vibe-badge:not(:empty) {
    opacity: 1;
}

.playlist-card__vibe-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.playlist-card--expanded .playlist-card__vibe-panel {
    max-height: 200px;
}

.vibe-details {
    padding: 0.5rem 0 0;
    font-size: 0.72rem;
}

.vibe-details__bpm {
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.35rem;
}

.vibe-details__bars {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.vibe-bar-row {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.vibe-bar-row__label {
    width: 36px;
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text-secondary);
}

.vibe-bar-row__bg {
    flex: 1;
    height: 3px;
    background: var(--border);
}

.vibe-bar-row__fill {
    height: 100%;
    background: var(--accent);
    transition: width 0.5s ease;
}

.vibe-bar-row__val {
    width: 20px;
    font-size: 0.6rem;
    text-align: right;
    color: var(--text-secondary);
}

.vibe-details__label {
    margin-top: 0.35rem;
    font-style: italic;
    color: var(--accent);
}

/* =========================================
   9. BLOG — Listing
   ========================================= */

.post-list {
    list-style: none;
    padding: 0;
}

.post-list li {
    padding-bottom: 1.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.post-list li:last-child {
    border-bottom: none;
}

.post-date {
    font-size: 0.8rem;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
    display: block;
    margin-bottom: 0.25rem;
}

.post-title {
    font-size: 1.1rem;
    font-weight: 400;
    letter-spacing: 0.01em;
    margin: 0;
}

.post-title a {
    border-bottom-color: var(--accent);
}

.post-excerpt {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
    line-height: 1.5;
}

/* =========================================
   9b. BLOG — Individual Post (LessWrong style)
   ========================================= */

/* Widen the reading column for posts */
body.post-page .page-content {
    max-width: 700px;
}

.post-page-title {
    margin-bottom: 0.25rem;
    font-size: 1.8rem;
    font-weight: 300;
    line-height: 1.25;
}

/* Reading time + date row */
.post-meta-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.post-meta-row .post-date {
    margin-bottom: 0;
}

.reading-time {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    letter-spacing: 0.03em;
}

/* Table of Contents */
.post-toc {
    border: 1px solid var(--border);
    padding: 1rem 1.25rem;
    margin-bottom: 2.5rem;
    font-size: 0.85rem;
}

.post-toc__title {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-tertiary);
    margin-bottom: 0.6rem;
    font-weight: 500;
}

.post-toc ol {
    padding-left: 1.25rem;
    margin: 0;
}

.post-toc li {
    margin-bottom: 0.3rem;
    line-height: 1.4;
}

.post-toc a {
    border-bottom: none;
    color: var(--text-secondary);
}

.post-toc a:hover {
    color: var(--text);
    background: none;
    border-bottom: 1px solid var(--accent);
}

.post-toc .toc-h3 {
    padding-left: 1rem;
    font-size: 0.8rem;
}

/* Post body typography */
.post-body {
    line-height: 1.85;
    font-size: 1.02rem;
    margin-top: 0;
}

.post-body p {
    margin-bottom: 1.25rem;
}

/* Headings with anchor links */
.post-body h2 {
    margin-top: 2.5rem;
    margin-bottom: 0.75rem;
    font-size: 1.3rem;
    font-weight: 400;
    padding-left: 0.75rem;
    border-left: 2px solid var(--accent);
}

.post-body h3 {
    margin-top: 2rem;
    margin-bottom: 0.6rem;
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.heading-anchor {
    opacity: 0;
    font-size: 0.8em;
    margin-left: 0.4rem;
    color: var(--text-tertiary);
    border-bottom: none;
    transition: opacity 0.15s;
    vertical-align: middle;
}

.post-body h2:hover .heading-anchor,
.post-body h3:hover .heading-anchor {
    opacity: 1;
}

/* Lists */
.post-body ul,
.post-body ol {
    padding-left: 1.5rem;
    margin-bottom: 1.25rem;
}

.post-body li {
    margin-bottom: 0.35rem;
    line-height: 1.7;
}

/* Blockquotes */
.post-body blockquote {
    border-left: 2px solid var(--gold);
    padding: 0.5rem 1rem;
    margin: 1.75rem 0;
    color: var(--text-secondary);
    font-style: italic;
    background: var(--bg-subtle);
}

.post-body blockquote p {
    margin-bottom: 0;
}

/* Code */
.post-body code {
    background: var(--bg-subtle);
    color: var(--text);
    padding: 2px 6px;
    font-size: 0.9em;
    border: 1px solid var(--border);
}

.post-body pre {
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    padding: 1rem;
    overflow-x: auto;
    margin: 1.5rem 0;
}

.post-body pre code {
    padding: 0;
    background: none;
    border: none;
}

/* Images */
.post-body img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1.5rem auto;
    border: 1px solid var(--border);
}

.post-body figure {
    margin: 2rem 0;
    text-align: center;
}

.post-body figcaption {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    font-style: italic;
}

/* Horizontal rules */
.post-body hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2.5rem 0;
}

/* Footnotes (generated by Markdown processor) */
.footnotes {
    margin-top: 3rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.footnotes ol {
    padding-left: 1.5rem;
}

.footnotes li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.back-link {
    margin-top: 3rem;
    font-size: 0.9rem;
}

/* ── Reading Progress Bar ── */

.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0;
    background: var(--accent);
    z-index: 999;
    transition: width 0.1s linear;
}

/* =========================================
   GLASSY BUTTON
   ========================================= */

.btn-glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 8px 20px;
    color: var(--text);
    font-family: inherit;
    font-weight: 300;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px var(--glass-shadow);
}

.btn-glass:hover {
    box-shadow: 0 4px 16px var(--glass-shadow);
    transform: translateY(-1px);
}

/* =========================================
   BORDER MORPH NAV
   ========================================= */

nav a {
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
    transform: translateX(-50%);
    transition: width 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

nav a.active::after {
    width: 100%;
}

nav a:not(.active):hover::after {
    width: 60%;
}

/* =========================================
   BACKGROUND TOGGLE
   ========================================= */

.bg-toggle {
    position: fixed;
    bottom: 16px;
    left: 16px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    cursor: pointer;
    z-index: 100;
    color: var(--text-secondary);
    font-size: 16px;
    transition: all 0.2s;
    box-shadow: 0 2px 8px var(--glass-shadow);
}

.bg-toggle:hover {
    color: var(--accent);
    box-shadow: 0 4px 16px var(--glass-shadow);
}

.bg-toggle.active {
    color: var(--accent);
    border-color: var(--accent);
}

/* =========================================
   MUSIC PAGE — TRACK TYPOGRAPHY
   ========================================= */

.bar-chart-row__name {
    color: var(--color-song-name);
    font-weight: 400;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.bar-chart-row__artist-hl {
    display: inline;
    background: var(--color-artist-bg);
    color: var(--color-artist-text);
    padding: 1px 6px;
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: 400;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.bar-chart-row__genre-hl {
    display: inline;
    background: var(--color-genre-bg);
    color: var(--color-genre-text);
    padding: 1px 6px;
    border-radius: 3px;
    font-size: 0.7rem;
    font-weight: 400;
}

/* =========================================
   RESEARCH GRAPH
   ========================================= */

.research-graph-section {
    margin-top: 3rem;
}

.research-graph-section h2 {
    margin-bottom: 1rem;
}

#research-graph {
    width: 100%;
    overflow: hidden;
}

#research-graph svg {
    max-width: 100%;
}

.graph-node:hover circle {
    fill: var(--accent-light, var(--accent));
}

.graph-node:hover text {
    font-weight: 500;
}

/* =========================================
   BLOG — DYNAMIC POSTS
   ========================================= */

.blog-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    margin-bottom: 1.5rem;
}

.blog-controls input[type="text"] {
    flex: 1;
    min-width: 200px;
    padding: 8px 12px;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 0.85rem;
}

.blog-controls input:focus {
    outline: none;
    border-color: var(--accent);
}

.tag-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tag-filter-btn {
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.72rem;
    cursor: pointer;
    transition: all 0.15s;
}

.tag-filter-btn:hover {
    border-color: var(--accent);
    color: var(--text);
}

.tag-filter-btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.post-card {
    border-bottom: 1px solid var(--border);
}

.post-card__link {
    display: block;
    padding: 1rem 0;
    text-decoration: none;
    color: var(--text);
    transition: background 0.15s;
}

.post-card__link:hover {
    background: var(--accent-hover);
}

.post-card__header {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.5rem;
}

.post-card__title {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text);
}

.post-card__meta {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.post-card__tags {
    margin-top: 4px;
}

.post-tag {
    display: inline-block;
    font-size: 0.65rem;
    color: var(--accent);
    border: 1px solid var(--accent);
    padding: 1px 6px;
    border-radius: 3px;
    margin-right: 4px;
    text-transform: lowercase;
}

.post-card__status {
    display: inline-block;
    font-size: 0.7rem;
    color: var(--text-tertiary);
    font-style: italic;
    margin-top: 2px;
}

/* =========================================
   FAQ — BLUR EFFECT
   ========================================= */

.faq-item {
    transition: filter 0.3s ease, opacity 0.3s ease;
}

.faq-item--dimmed {
    filter: blur(3px);
    opacity: 0.4;
    pointer-events: none;
}

.faq-question {
    display: block;
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    font-size: 0.95rem;
    padding: 1rem 0;
    cursor: pointer;
    font-family: inherit;
    transition: color 0.15s;
}

.faq-question:hover {
    color: var(--accent);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.faq-item--open .faq-answer {
    max-height: 500px;
}

.faq-answer__inner {
    padding: 1rem 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 1rem;
    margin: 0.5rem 0;
}

/* =========================================
   TESTIMONIALS
   ========================================= */

.testimonials-section {
    margin-top: 3rem;
}

.testimonials-scroll {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}

.testimonial-card {
    flex: 0 0 280px;
    scroll-snap-align: start;
    padding: 1.25rem;
    border: 1px solid var(--border);
    background: var(--bg-subtle);
    border-radius: 8px;
}

.testimonial-card__quote {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text);
    font-style: italic;
    margin-bottom: 0.75rem;
}

.testimonial-card__author {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text);
}

.testimonial-card__role {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* =========================================
   EASTER EGG — CARD FOUND GLOW
   ========================================= */

.holo-card--found {
    animation: card-found-glow 0.8s ease-out;
}

@keyframes card-found-glow {
    0% { box-shadow: 0 0 0 0 rgba(201, 169, 110, 0.6); }
    50% { box-shadow: 0 0 20px 4px rgba(201, 169, 110, 0.4); }
    100% { box-shadow: 0 0 0 0 rgba(201, 169, 110, 0); }
}

/* =========================================
   PLAYLIST DRAWER CARDS
   ========================================= */

.playlist-drawer {
    perspective: 800px;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.playlist-drawer-card {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    border: 1px solid var(--border);
    border-bottom: none;
    background: var(--bg-subtle);
    text-decoration: none;
    color: var(--text);
    transform-origin: bottom center;
    transform: rotateX(0deg);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
                box-shadow 0.3s ease,
                z-index 0s;
    position: relative;
    z-index: 1;
}

.playlist-drawer-card:last-child {
    border-bottom: 1px solid var(--border);
}

.playlist-drawer-card:hover {
    transform: rotateX(-8deg) translateY(-6px) scale(1.01);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
    z-index: 10;
    border-color: var(--accent);
}

.playlist-drawer-card__img {
    width: 64px;
    height: 64px;
    object-fit: cover;
    border-radius: 4px;
    flex-shrink: 0;
}

.playlist-drawer-card__img--placeholder {
    background: var(--bg-subtle-2);
}

.playlist-drawer-card__body {
    flex: 1;
    min-width: 0;
}

.playlist-drawer-card__name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 2px;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.playlist-drawer-card__count {
    font-size: 0.72rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.playlist-drawer-card__desc {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.5;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* =========================================
   WELCOME LETTER
   ========================================= */

.letter-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.letter-overlay.visible {
    opacity: 1;
}

.letter-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2.5rem;
    max-width: 500px;
    width: 90%;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text);
}

.letter-card p {
    margin-bottom: 1rem;
}

.letter-signature {
    font-family: 'Caveat', cursive;
    font-size: 48px;
    color: var(--accent);
    margin-top: 1rem;
}

.letter-envelope {
    position: fixed;
    bottom: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    cursor: pointer;
    z-index: 100;
    font-size: 18px;
    animation: envelope-bob 3s ease-in-out infinite;
    transition: all 0.2s;
    box-shadow: 0 2px 8px var(--glass-shadow);
}

.letter-envelope:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 16px var(--glass-shadow);
}

@keyframes envelope-bob {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}

/* ── Post Layout: Sidebar TOC on Desktop ── */

.post-layout {
    display: block;
}

.post-sidebar {
    display: none;
}

@media (min-width: 901px) {
    body.post-page .page-content {
        max-width: 960px;
    }

    .post-layout {
        display: flex;
        gap: 2.5rem;
    }

    .post-sidebar--active {
        display: block;
        width: 200px;
        flex-shrink: 0;
    }

    .post-sidebar .post-toc {
        position: sticky;
        top: 2rem;
        border: none;
        padding: 0;
        margin: 0;
        font-size: 0.78rem;
    }

    .post-sidebar .post-toc__title {
        font-size: 0.65rem;
    }

    .post-sidebar .post-toc ol {
        padding-left: 0.75rem;
    }

    .post-sidebar--active + .post-article #post-toc-container {
        display: none;
    }

    .post-article {
        flex: 1;
        min-width: 0;
    }
}

/* Scroll spy active highlight */
.toc-active {
    color: var(--accent) !important;
    font-weight: 500;
}

/* ── Post Tags ── */

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-top: 0.25rem;
}

.post-tags--detail {
    margin-bottom: 1.5rem;
}

.post-tag {
    display: inline-block;
    font-size: 0.65rem;
    text-transform: lowercase;
    letter-spacing: 0.03em;
    padding: 2px 8px;
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

/* ── Blog Controls: Search + Tag Cloud ── */

.blog-controls {
    margin-bottom: 1.5rem;
}

.blog-search {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
    font-family: inherit;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    outline: none;
    margin-bottom: 0.75rem;
    transition: border-color 0.2s;
}

.blog-search:focus {
    border-color: var(--accent);
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.tag-btn {
    font-size: 0.68rem;
    text-transform: lowercase;
    letter-spacing: 0.03em;
    padding: 3px 10px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: inherit;
    transition: all 0.15s;
}

.tag-btn:hover {
    border-color: var(--accent);
    color: var(--text);
}

.tag-btn--active {
    background: var(--accent);
    color: var(--bg);
    border-color: var(--accent);
}

/* ── Footnote Tooltip ── */

.fn-tooltip-trigger {
    cursor: help;
}

/* =========================================
   10. CONTACT INFO
   ========================================= */

.contact-info {
    margin-top: 3rem;
    border-top: 1px solid var(--border);
    padding-top: 1rem;
    font-size: 0.85rem;
}

.contact-info a {
    margin-right: 1rem;
}

.meet-btn {
    display: inline-block;
    padding: 6px 16px;
    border: 1px solid var(--accent);
    color: var(--accent);
    text-decoration: none;
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    transition: background 0.2s, color 0.2s;
    border-bottom: 1px solid var(--accent);
}

.meet-btn:hover {
    background: var(--accent);
    color: var(--bg);
}

/* =========================================
   11. FOOTER
   ========================================= */

footer {
    margin-top: 4rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

footer a {
    color: var(--text-secondary);
    border-bottom-color: var(--border);
}

footer a:hover {
    color: var(--text);
    border-bottom-color: var(--accent);
    background: none;
}

.footer-links {
    margin-bottom: 0.5rem;
}

.footer-links a {
    margin-right: 1rem;
}

footer p {
    font-weight: 300;
    letter-spacing: 0.02em;
}

/* =========================================
   12. RESPONSIVE
   ========================================= */

@media (max-width: 600px) {
    body {
        margin: 30px auto;
        padding: 0 18px;
    }

    header h1 {
        font-size: 1.5rem;
    }

    nav {
        font-size: 0.75rem;
        flex-wrap: wrap;
    }

    .nav-sep {
        margin: 0 0.25rem;
    }

    .card-showcase {
        gap: 0.5rem;
    }

    .holo-card {
        width: 90px;
    }

    .work-grid {
        grid-template-columns: 1fr;
    }

    .last-played-card__art {
        width: 60px;
        height: 60px;
    }

    .bar-chart-row__label {
        width: 100px;
        font-size: 0.75rem;
    }

    .bar-chart-row__value {
        width: 1.5rem;
        font-size: 0.7rem;
    }

    h2 {
        font-size: 1.2rem;
    }

    .post-body h2 {
        font-size: 1.15rem;
    }

    .insights-cards {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .vinyl-slot {
        width: 100px;
    }

    .vinyl-sleeve {
        width: 90px;
        height: 90px;
    }

    .vinyl-record {
        width: 82px;
        height: 82px;
        left: 4px;
        top: 4px;
    }

    .vinyl-label {
        width: 34px;
        height: 34px;
    }
}