/* ═══════════════════════════════════════════════════════════
   LUXURY REDESIGN v1.0
   Elite Academic / Dark Luxury — Nature journal meets Apple.com
   Loaded after styles.css — purely additive overrides.
   ═══════════════════════════════════════════════════════════ */

/* ── Palette & Typography Upgrades ─────────────────────── */
:root {
    --navy:          #04061a;
    --navy-light:    #080b22;
    --ink:           #0c0f2e;
    --gold:          #f0b323;
    --gold-bright:   #ffc84a;
    --gold-pale:     #ffe0a0;
    --gold-dim:      rgba(240,179,35,.12);
    --gold-glow:     rgba(255,180,50,.28);
    --glass-bg:      rgba(255,255,255,.055);
    --glass-border:  rgba(255,255,255,.13);
    --glass-top:     rgba(255,255,255,.18);
    --shadow-gold:   0 8px 40px rgba(240,179,35,.18), 0 2px 12px rgba(0,0,0,.4);
    --shadow-card:   0 4px 32px rgba(0,0,0,.45), 0 1px 6px rgba(0,0,0,.3);
    --radius:        16px;
    --radius-sm:     10px;
    --font-display:  'Playfair Display', 'Georgia', serif;
}

/* Base body — richer darkness */
body {
    background: var(--navy);
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(240,179,35,.04) 0%, transparent 60%);
}

/* ── Glassmorphism Mixin (applied to all card types) ─────── */
.exp-card,
.pcard,
.rcard,
.bcard,
.acard,
.scard,
.cert-group,
.about-stat-card,
.edu-pill,
.media-banner,
.pub-card-inline,
.card,
.zenodo-card {
    background:       var(--glass-bg);
    border:           1px solid var(--glass-border);
    border-top-color: var(--glass-top);
    backdrop-filter:  blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow:       var(--shadow-card);
    transition:       transform .35s cubic-bezier(.4,0,.2,1),
                      box-shadow .35s cubic-bezier(.4,0,.2,1),
                      border-color .35s cubic-bezier(.4,0,.2,1);
}

.exp-card:hover,
.pcard:hover,
.rcard:hover,
.bcard:hover,
.acard:hover,
.scard:hover,
.cert-group:hover,
.about-stat-card:hover,
.media-banner:hover,
.card:hover,
.zenodo-card:hover {
    transform:    translateY(-7px) scale(1.015);
    box-shadow:   var(--shadow-gold);
    border-color: rgba(240,179,35,.5);
    border-top-color: rgba(240,179,35,.6);
}

/* Inner shimmer sweep on hover */
.exp-card,
.pcard,
.rcard,
.bcard,
.acard,
.scard,
.card,
.zenodo-card {
    position: relative;
    overflow: hidden;
}

.exp-card::before,
.pcard::before,
.rcard::before,
.bcard::before,
.acard::before,
.scard::before,
.card::before,
.zenodo-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        110deg,
        transparent 25%,
        rgba(255,255,255,.06) 50%,
        transparent 75%
    );
    background-size: 200% 100%;
    background-position: 200% 0;
    transition: background-position .7s ease;
    pointer-events: none;
    z-index: 0;
}

.exp-card:hover::before,
.pcard:hover::before,
.rcard:hover::before,
.bcard:hover::before,
.acard:hover::before,
.scard:hover::before,
.card:hover::before,
.zenodo-card:hover::before {
    background-position: -200% 0;
}

/* Ensure content stays above shimmer */
.exp-card > *,
.pcard > *,
.rcard > *,
.bcard > *,
.acard > *,
.scard > *,
.card > *,
.zenodo-card > * {
    position: relative;
    z-index: 1;
}

/* ── Experience card — gold left border glow ─────────────── */
.exp-card {
    border-left: 3px solid var(--gold);
    box-shadow: var(--shadow-card), -2px 0 20px rgba(240,179,35,.1);
}
.exp-card:hover {
    box-shadow: var(--shadow-gold), -2px 0 30px rgba(240,179,35,.25);
}

/* ── Navbar Upgrades ─────────────────────────────────────── */
.navbar {
    background: rgba(4, 6, 26, .82);
    border-bottom: 1px solid rgba(240,179,35,.06);
}
.navbar.scrolled {
    background: rgba(4, 6, 26, .97);
    box-shadow: 0 2px 30px rgba(0,0,0,.5), 0 1px 0 rgba(240,179,35,.15);
}
.nav-brand {
    font-family: var(--font-display);
    font-size: 1.05rem;
    letter-spacing: .01em;
}

/* Gold dot pulse next to brand */
.nav-brand::before {
    content: '';
    display: inline-block;
    width: 7px;
    height: 7px;
    background: var(--gold);
    border-radius: 50%;
    margin-right: .45rem;
    vertical-align: middle;
    box-shadow: 0 0 8px var(--gold-glow), 0 0 16px rgba(240,179,35,.2);
    animation: brand-pulse 2.5s ease-in-out infinite;
}
@keyframes brand-pulse {
    0%, 100% { box-shadow: 0 0 8px var(--gold-glow); transform: scale(1); }
    50%       { box-shadow: 0 0 16px rgba(240,179,35,.5), 0 0 28px rgba(240,179,35,.2); transform: scale(1.2); }
}

/* Active nav link — glowing dot indicator */
.nav-link.active::after {
    height: 3px;
    background: linear-gradient(90deg, var(--gold), var(--gold-bright));
    box-shadow: 0 0 8px rgba(240,179,35,.5);
    border-radius: 3px;
}

/* ── Hero Section ─────────────────────────────────────────── */
.hero {
    background: none;
}
.hero-bg {
    background:
        radial-gradient(ellipse 100% 60% at 50% -10%, rgba(240,179,35,.06) 0%, transparent 55%),
        radial-gradient(ellipse 60% 80% at 15% 90%, rgba(59,130,246,.06) 0%, transparent 50%),
        radial-gradient(ellipse 40% 40% at 85% 15%, rgba(168,85,247,.04) 0%, transparent 50%),
        linear-gradient(180deg, #04061a 0%, #02040e 100%);
}

/* Hero title — Playfair Display */
.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 5.5vw, 4.8rem);
    font-weight: 700;
    letter-spacing: -.01em;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--gold-pale) 0%, var(--gold-bright) 30%, var(--white) 55%, var(--gold-bright) 75%, var(--gold-pale) 100%);
    background-size: 300% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: hero-shimmer 8s ease-in-out infinite;
    filter: drop-shadow(0 0 30px rgba(240,179,35,.15));
}
@keyframes hero-shimmer {
    0%, 100% { background-position: 0% center; }
    50%       { background-position: 100% center; }
}

/* Hero subtitle & tagline — elegant stagger */
.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    letter-spacing: .04em;
    color: rgba(176,181,196,.85);
    animation: fade-up .8s ease .3s both;
}
.hero-tagline {
    font-size: clamp(1.05rem, 2.2vw, 1.4rem);
    font-family: var(--font-display);
    font-style: italic;
    color: var(--gold-bright);
    text-shadow: 0 0 30px rgba(240,179,35,.25), 0 0 60px rgba(240,179,35,.1);
    animation: fade-up .8s ease .5s both;
}

@keyframes fade-up {
    from { opacity: 0; transform: translateY(18px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* CTA buttons — glassmorphism */
.hero-cta .btn-primary {
    background:       linear-gradient(135deg, var(--gold) 0%, var(--gold-bright) 100%);
    color:            var(--navy);
    border:           none;
    box-shadow:       0 4px 24px rgba(240,179,35,.35), inset 0 1px 0 rgba(255,255,255,.25);
    font-family:      var(--font);
    font-weight:      700;
    letter-spacing:   .03em;
}
.hero-cta .btn-primary:hover {
    background:   linear-gradient(135deg, var(--gold-bright) 0%, #ffdf80 100%);
    transform:    translateY(-4px) scale(1.03);
    box-shadow:   0 8px 36px rgba(240,179,35,.5), 0 0 60px rgba(240,179,35,.15);
}

.hero-cta .btn-outline {
    background:        var(--glass-bg);
    backdrop-filter:   blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border:            1px solid rgba(240,179,35,.45);
    border-top-color:  rgba(240,179,35,.6);
    color:             var(--gold-bright);
    box-shadow:        inset 0 1px 0 rgba(255,255,255,.08), 0 4px 16px rgba(0,0,0,.35);
}
.hero-cta .btn-outline:hover {
    background: rgba(240,179,35,.18);
    border-color: var(--gold-bright);
    color: var(--gold-pale);
    transform: translateY(-4px) scale(1.03);
    box-shadow: 0 8px 30px rgba(240,179,35,.3);
}

/* Ticker strip upgrade */
.hero-ticker {
    background: rgba(4, 6, 26, .9);
    border-top: 1px solid rgba(240,179,35,.18);
    backdrop-filter: blur(8px);
}
.ticker-track strong { color: var(--gold-bright); }

/* ── Section Titles ──────────────────────────────────────── */
.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.8vw, 2.8rem);
    font-weight: 700;
    letter-spacing: -.015em;
    line-height: 1.15;
}

/* Animated underline — expands from center on .reveal.visible */
.section-title::after {
    content: '';
    display: block;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--gold-bright), var(--gold), transparent);
    border-radius: 2px;
    margin: .6rem auto 0;
    transition: width 1s cubic-bezier(.4,0,.2,1) .3s;
    box-shadow: 0 0 10px rgba(240,179,35,.4);
}
.section-title.visible::after,
.section-title.lux-revealed::after {
    width: 120px;
}

.section-subtitle {
    font-size: 1rem;
    color: rgba(176,181,196,.8);
    line-height: 1.75;
    letter-spacing: .01em;
}

/* Section alternation — diagonal noise texture */
.section--alt {
    background: var(--navy-light);
    background-image:
        radial-gradient(ellipse 70% 50% at 50% 0%, rgba(240,179,35,.03) 0%, transparent 55%),
        radial-gradient(ellipse 50% 40% at 100% 100%, rgba(59,130,246,.025) 0%, transparent 50%);
    border-top: 1px solid rgba(240,179,35,.07);
    border-bottom: 1px solid rgba(240,179,35,.07);
}

/* ── About Stats — premium glow numbers ─────────────────── */
.about-stat-card {
    background:    var(--glass-bg);
    border:        1px solid rgba(240,179,35,.2);
    border-top-color: rgba(240,179,35,.3);
    box-shadow:    0 4px 20px rgba(0,0,0,.35), 0 0 0 1px rgba(240,179,35,.04);
}
.about-stat-num {
    font-family:  var(--font-display);
    font-size:    1.9rem;
    font-weight:  700;
    color:        var(--gold-bright);
    text-shadow:  0 0 24px rgba(240,179,35,.4), 0 0 48px rgba(240,179,35,.12);
    letter-spacing: -.02em;
}
.about-stat-lbl {
    font-size:    .68rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: rgba(107,114,128,.85);
}

/* ── Education Pills ─────────────────────────────────────── */
.edu-pill {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-top-color: var(--glass-top);
    box-shadow: 0 2px 12px rgba(0,0,0,.3);
}
.edu-pill:hover { border-color: rgba(240,179,35,.4); }

/* ── Skill cards ─────────────────────────────────────────── */
.scard-icon {
    width:  44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle, rgba(240,179,35,.15) 0%, rgba(240,179,35,.04) 100%);
    border: 1px solid rgba(240,179,35,.2);
    border-radius: 10px;
    font-size: 1.4rem;
    margin-bottom: .6rem;
    box-shadow: 0 0 16px rgba(240,179,35,.1);
}
.scard h3 {
    font-size: .95rem;
    font-weight: 600;
    color: var(--white);
    letter-spacing: .01em;
}

/* Progress bar — shimmer on reveal */
.progress-bar {
    height: 5px;
    background: rgba(255,255,255,.06);
    border-radius: 3px;
}
.progress-fill {
    background: linear-gradient(90deg, var(--gold), var(--gold-bright), var(--gold));
    background-size: 200% 100%;
    box-shadow: 0 0 8px rgba(240,179,35,.4);
    border-radius: 3px;
    animation: shimmer-bar 2.5s ease infinite, progress-glow 3s ease infinite;
}
@keyframes shimmer-bar {
    0%, 100% { background-position: 0% 0; }
    50%       { background-position: 100% 0; }
}

/* ── Research / Project / Award cards ───────────────────── */
.rcard--focus {
    background: rgba(240,179,35,.04);
    border-color: rgba(240,179,35,.22);
    border-top-color: rgba(240,179,35,.35);
}
.rcard h4,
.pcard h3,
.acard h4,
.bcard h4 {
    font-size: .95rem;
    font-weight: 600;
    line-height: 1.35;
}
.acard--cert {
    background: rgba(240,179,35,.035);
    border-color: rgba(240,179,35,.18);
    border-top-color: rgba(240,179,35,.28);
}

/* Tags — premium pill style */
.tag {
    font-size: .68rem;
    padding: .25rem .6rem;
    border-radius: 20px;
    background: rgba(240,179,35,.1);
    border: 1px solid rgba(240,179,35,.2);
    color: var(--gold-bright);
    font-weight: 500;
    letter-spacing: .02em;
    backdrop-filter: blur(6px);
}

/* Card badges */
.card-badge {
    font-size: .64rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    padding: .22rem .65rem;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--gold), var(--gold-bright));
    color: var(--navy);
    display: inline-block;
    margin-bottom: .6rem;
    box-shadow: 0 2px 8px rgba(240,179,35,.3);
}

/* ── Section-subhead ──────────────────────────────────────── */
.section-subhead {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-style: italic;
    font-weight: 600;
    letter-spacing: .01em;
    color: var(--gold-bright);
    text-transform: none;
    border-bottom: 1px solid rgba(240,179,35,.15);
    padding-bottom: .5rem;
    max-width: 600px;
    margin: 0 auto 1.25rem;
}

/* ── Subsection title ─────────────────────────────────────── */
.subsection-title {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    border-left: 3px solid var(--gold-bright);
    box-shadow: -3px 0 12px rgba(240,179,35,.2);
}

/* ── Media banner upgrade ─────────────────────────────────── */
.media-banner {
    background: linear-gradient(135deg, rgba(255,255,255,.055), rgba(240,179,35,.06));
    border: 1px solid var(--glass-border);
    border-top-color: var(--glass-top);
    box-shadow: var(--shadow-card);
}
.media-banner h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
}

.about-bio {
    position: relative;
    padding: clamp(1.15rem, 2vw, 1.65rem);
    border: 1px solid var(--glass-border);
    border-top-color: var(--glass-top);
    border-radius: var(--radius);
    background:
        linear-gradient(135deg, rgba(255,255,255,.065), rgba(255,255,255,.02)),
        radial-gradient(circle at 12% 0%, rgba(240,179,35,.12), transparent 34%);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}
.about-bio::before {
    content: '';
    position: absolute;
    inset: 0 auto 0 0;
    width: 4px;
    background: linear-gradient(180deg, var(--gold-bright), rgba(240,179,35,.15));
}
.about-bio p {
    margin: 0;
    color: rgba(229,231,235,.86);
    font-size: .98rem;
    line-height: 1.85;
}
.about-bio em {
    color: rgba(255,255,255,.92);
}
.cv-actions {
    margin-top: 1.1rem;
}
.about-edu {
    padding: clamp(1rem, 1.8vw, 1.35rem);
    border: 1px solid rgba(255,255,255,.075);
    border-radius: var(--radius);
    background: linear-gradient(145deg, rgba(255,255,255,.04), rgba(255,255,255,.015));
    box-shadow: 0 12px 34px rgba(0,0,0,.24);
}
.about-edu-title {
    font-family: var(--font-display);
    font-size: 1.22rem;
    color: var(--gold-bright);
}
.about-stat-card {
    position: relative;
    overflow: hidden;
    padding: 1rem .7rem;
    border-radius: var(--radius);
    background:
        linear-gradient(160deg, rgba(240,179,35,.13), rgba(255,255,255,.035) 48%, rgba(255,255,255,.015)),
        var(--glass-bg);
}
.about-stat-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent 0%, rgba(255,255,255,.08) 45%, transparent 72%);
    transform: translateX(-120%);
    transition: transform .7s ease;
}
.about-stat-card:hover::after {
    transform: translateX(120%);
}
.edu-pill {
    position: relative;
    padding: .78rem .85rem;
    border-radius: 14px;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.edu-pill:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, rgba(240,179,35,.075), rgba(255,255,255,.035));
    box-shadow: 0 10px 28px rgba(0,0,0,.3), 0 0 24px rgba(240,179,35,.08);
}
.edu-year {
    min-width: 3.25rem;
    padding: .18rem .42rem;
    border: 1px solid rgba(240,179,35,.22);
    border-radius: 999px;
    background: rgba(240,179,35,.08);
    text-align: center;
}
.edu-pill strong {
    color: rgba(255,255,255,.94);
    font-size: .84rem;
    line-height: 1.35;
}
.edu-pill span {
    color: rgba(176,181,196,.82);
    line-height: 1.45;
}
.exp-card {
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,.085);
    border-left: 0;
    border-radius: var(--radius);
    padding: 1.3rem 1.35rem;
    background:
        linear-gradient(145deg, rgba(255,255,255,.055), rgba(255,255,255,.018)),
        radial-gradient(circle at 0% 0%, rgba(240,179,35,.12), transparent 34%);
    box-shadow: 0 14px 38px rgba(0,0,0,.24);
}
.exp-card::before {
    content: '';
    position: absolute;
    inset: 0 0 auto;
    height: 3px;
    background: linear-gradient(90deg, var(--gold-bright), rgba(240,179,35,.18), transparent);
}
.exp-card:hover {
    transform: translateY(-6px);
    border-color: rgba(240,179,35,.34);
    box-shadow: 0 18px 46px rgba(0,0,0,.34), 0 0 34px rgba(240,179,35,.11);
}
.exp-head {
    align-items: flex-start;
    margin-bottom: .45rem;
}
.exp-head h3 {
    font-family: var(--font-display);
    font-size: 1.08rem;
    color: var(--white);
}
.exp-date {
    padding: .22rem .62rem;
    border: 1px solid rgba(240,179,35,.18);
    border-radius: 999px;
    background: rgba(240,179,35,.075);
    color: var(--gold-bright);
    font-style: normal;
}
.exp-org {
    color: rgba(176,181,196,.88);
}
.exp-bullets {
    padding-left: 0;
    list-style: none;
}
.exp-bullets li {
    position: relative;
    padding-left: 1rem;
    color: rgba(229,231,235,.84);
}
.exp-bullets li::before {
    content: '';
    position: absolute;
    left: 0;
    top: .72em;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--gold-bright);
    box-shadow: 0 0 10px rgba(240,179,35,.55);
}
.exp-list {
    display: grid;
    gap: .65rem;
    border-top: 0;
}
.exp-list__item {
    padding: .85rem 1rem;
    border: 1px solid rgba(255,255,255,.065);
    border-radius: 14px;
    background: rgba(255,255,255,.026);
    transition: transform var(--transition), border-color var(--transition), background var(--transition);
}
.exp-list__item:hover {
    transform: translateX(4px);
    border-color: rgba(240,179,35,.22);
    background: rgba(240,179,35,.045);
}
.project-card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 100%;
    border: 1px solid rgba(255,255,255,.08);
    border-top-color: rgba(255,255,255,.13);
    border-radius: calc(var(--radius) + 4px);
    background:
        linear-gradient(145deg, rgba(255,255,255,.06), rgba(255,255,255,.018)),
        var(--navy-light);
    box-shadow: 0 16px 42px rgba(0,0,0,.28);
}
.project-card:hover {
    transform: translateY(-7px);
    border-color: rgba(240,179,35,.3);
    box-shadow: 0 22px 54px rgba(0,0,0,.38), 0 0 34px rgba(240,179,35,.1);
}
.project-image::after {
    content: '';
    position: absolute;
    inset: auto 0 0;
    height: 50%;
    background: linear-gradient(180deg, transparent, rgba(5,10,34,.82));
}
.status-badge {
    border: 1px solid rgba(255,255,255,.2);
    box-shadow: 0 8px 22px rgba(0,0,0,.28);
    backdrop-filter: blur(10px);
}
.project-content {
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: 1.35rem;
}
.project-category {
    width: fit-content;
    padding: .18rem .58rem;
    border: 1px solid rgba(240,179,35,.16);
    border-radius: 999px;
    background: rgba(240,179,35,.065);
    font-size: .68rem;
    letter-spacing: .08em;
}
.project-title {
    font-family: var(--font-display);
    font-size: 1.28rem;
    line-height: 1.25;
}
.project-description {
    color: rgba(229,231,235,.82);
    line-height: 1.7;
}
.project-tech {
    margin-top: auto;
}
.tech-tag {
    border: 1px solid rgba(240,179,35,.14);
    border-radius: 999px;
    background: rgba(240,179,35,.07);
    color: rgba(245,202,92,.94);
}

/* ── Publish card inline ──────────────────────────────────── */
.pub-card-inline {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(240,179,35,.22);
    border-top-color: rgba(240,179,35,.35);
    box-shadow: var(--shadow-card);
}
.pub-card-inline__title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--white);
}

/* ── Collab CTA block ─────────────────────────────────────── */
.collab-cta {
    background: var(--glass-bg);
    border: 1px solid rgba(240,179,35,.2);
    border-top-color: rgba(240,179,35,.3);
    border-radius: var(--radius);
    padding: 2rem;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: var(--shadow-card), 0 0 40px rgba(240,179,35,.06);
}
.collab-cta h3 {
    font-family: var(--font-display);
    font-size: 1.35rem;
}

/* ── Contact section ──────────────────────────────────────── */
.form-group input,
.form-group select,
.form-group textarea {
    background: rgba(255,255,255,.05);
    border: 1px solid rgba(255,255,255,.1);
    border-top-color: rgba(255,255,255,.16);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: border-color .3s, box-shadow .3s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--gold-bright);
    box-shadow: 0 0 0 3px rgba(240,179,35,.12), 0 0 20px rgba(240,179,35,.1);
}

/* ── Footer ───────────────────────────────────────────────── */
.footer {
    border-top: 1px solid rgba(240,179,35,.08);
    background: radial-gradient(ellipse 80% 60% at 50% 100%, rgba(240,179,35,.04) 0%, transparent 65%);
}
.footer::before {
    width: 200px;
    background: linear-gradient(90deg, transparent, var(--gold-bright), var(--gold), transparent);
    box-shadow: 0 0 20px rgba(240,179,35,.3);
}
.footer strong {
    font-family: var(--font-display);
    font-size: 1.05rem;
    color: var(--gold-bright);
}
.footer p { color: rgba(107,114,128,.75); }

/* Social icons — premium hover */
.social-row a {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: all .3s cubic-bezier(.4,0,.2,1);
}

/* ── Reading progress bar — thicker + glowing ─────────────── */
#reading-progress {
    height: 3px;
    background: linear-gradient(90deg, var(--gold), var(--gold-bright), #fff8e1, var(--gold));
    background-size: 300% 100%;
    animation: progress-glow 3s ease infinite;
    box-shadow: 0 0 10px rgba(240,179,35,.5);
}

/* ── Back to top — glass style ────────────────────────────── */
#back-to-top {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1.5px solid rgba(240,179,35,.5);
    box-shadow: 0 4px 20px rgba(0,0,0,.4), 0 0 16px rgba(240,179,35,.15);
}
#back-to-top:hover {
    background: var(--gold);
    box-shadow: 0 6px 24px rgba(240,179,35,.5), 0 0 30px rgba(240,179,35,.2);
}

/* ── Buttons global upgrade ───────────────────────────────── */
.btn-primary {
    background:  linear-gradient(135deg, var(--gold) 0%, var(--gold-bright) 100%);
    box-shadow:  0 2px 16px rgba(240,179,35,.25), inset 0 1px 0 rgba(255,255,255,.2);
    font-weight: 700;
    letter-spacing: .02em;
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--gold-bright) 0%, #ffe090 100%);
    box-shadow: 0 6px 30px rgba(240,179,35,.45), 0 0 50px rgba(240,179,35,.12);
    transform: translateY(-4px) scale(1.02);
}

.btn-outline {
    border-color: rgba(240,179,35,.55);
    color: var(--gold-bright);
    background: rgba(240,179,35,.04);
    backdrop-filter: blur(8px);
}
.btn-outline:hover {
    background:   rgba(240,179,35,.15);
    border-color: var(--gold-bright);
    color:        var(--gold-pale);
    box-shadow:   0 6px 24px rgba(240,179,35,.3);
    transform:    translateY(-4px) scale(1.02);
}

/* ── Scroll-Reveal Classes (driven by JS observer) ──────── */
.lux-reveal {
    opacity:    0;
    transform:  translateY(36px);
    transition: opacity .75s cubic-bezier(.4,0,.2,1),
                transform .75s cubic-bezier(.4,0,.2,1);
}
.lux-reveal.lux-revealed {
    opacity:   1;
    transform: translateY(0);
}

/* Stagger delays for grid children */
.lux-stagger > *:nth-child(1)  { transition-delay: .05s; }
.lux-stagger > *:nth-child(2)  { transition-delay: .12s; }
.lux-stagger > *:nth-child(3)  { transition-delay: .19s; }
.lux-stagger > *:nth-child(4)  { transition-delay: .26s; }
.lux-stagger > *:nth-child(5)  { transition-delay: .33s; }
.lux-stagger > *:nth-child(6)  { transition-delay: .40s; }
.lux-stagger > *:nth-child(7)  { transition-delay: .47s; }
.lux-stagger > *:nth-child(8)  { transition-delay: .54s; }
.lux-stagger > *:nth-child(9)  { transition-delay: .61s; }

/* ── Stat number counter animation ───────────────────────── */
.about-stat-num[data-target],
.about-stat-num {
    display: block;
    transition: color .3s ease;
}

/* ── GitHub Showcase — Zenodo cards upgrade ───────────────── */
.zenodo-releases {
    margin-top: 2rem;
    border-top: 1px solid rgba(240,179,35,.15);
    padding-top: 1.75rem;
}
.zenodo-releases__heading {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gold-bright);
    display: flex;
    align-items: center;
    gap: .5rem;
    margin-bottom: 1.25rem;
}
.zenodo-card {
    padding: 1.35rem 1.5rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
}
.zenodo-card__title a {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--white);
}
.zenodo-card__title a:hover { color: var(--gold-bright); }
.zenodo-cite-btn {
    background: linear-gradient(135deg, rgba(240,179,35,.15), rgba(240,179,35,.08));
    border: 1px solid rgba(240,179,35,.35);
    color: var(--gold-bright);
    font-weight: 600;
    border-radius: 8px;
    padding: .4rem 1rem;
    cursor: pointer;
    font-size: .8rem;
    transition: all .3s ease;
}
.zenodo-cite-btn:hover {
    background: rgba(240,179,35,.25);
    border-color: var(--gold-bright);
    box-shadow: 0 0 16px rgba(240,179,35,.25);
    transform: translateY(-2px);
}
.zenodo-cite-btn--copied {
    background: rgba(34,197,94,.15);
    border-color: #22c55e;
    color: #22c55e;
}

/* ── CV buttons row ──────────────────────────────────────── */
.btn--cv,
.btn--cv-request {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

/* ── Scroll down indicator glow ──────────────────────────── */
.scroll-mouse {
    border-color: rgba(240,179,35,.4);
    box-shadow: 0 0 12px rgba(240,179,35,.15);
}

/* ── Mobile tweaks ───────────────────────────────────────── */
@media (max-width: 768px) {
    .hero h1 { font-size: clamp(2.2rem, 8vw, 3.5rem); }
    .section-title { font-size: clamp(1.7rem, 5vw, 2.4rem); }
    .about-stat-num { font-size: 1.5rem; }
    .lux-stagger > * { transition-delay: 0s !important; }
}