/* ---------- Reset & Base ---------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #050608;
    --bg-alt: #0a0c10;
    --surface: rgba(255, 255, 255, 0.045);
    --surface-hover: rgba(255, 255, 255, 0.09);
    --border: rgba(255, 255, 255, 0.1);
    --border-strong: rgba(255, 255, 255, 0.22);
    --text: #f2f1eb;
    --text-dim: #98978f;
    --accent: #d9ff4b;
    --accent-2: #f472b6;
    --accent-3: #5eead4;
    --accent-grad: linear-gradient(120deg, #d9ff4b 0%, #5eead4 100%);
    --paper: #efe9dd;
    --paper-text: #16140f;
    --paper-dim: #6b6558;
    --radius: 4px;
    --maxw: 1280px;
}

html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    * {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    position: relative;
    cursor: default;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
}

ul, ol {
    list-style: none;
}

em {
    font-family: 'Fraunces', Georgia, serif;
    font-style: italic;
    font-weight: 500;
}

/* ---------- Preloader ---------- */
.preloader {
    position: fixed;
    inset: 0;
    z-index: 999;
    background: var(--bg);
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    padding: 40px;
    transition: transform 0.7s cubic-bezier(0.76, 0, 0.24, 1);
}

.preloader.done {
    transform: translateY(-100%);
    pointer-events: none;
}

.preloaderCount {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    color: var(--text-dim);
}

/* ---------- Living background ---------- */
#bgCanvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: var(--bg);
}

.grainOverlay {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: 0.035;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Custom cursor ---------- */
.cursorDot,
.cursorRing {
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 999;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    will-change: transform;
}

.cursorDot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    display: none;
}

.cursorRing {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-strong);
    display: none;
    align-items: center;
    justify-content: center;
    transition: width 0.25s, height 0.25s, border-color 0.2s, background 0.2s;
}

.cursorRing #cursorLabel {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    letter-spacing: 0.05em;
    color: var(--bg);
    opacity: 0;
    transition: opacity 0.2s;
    white-space: nowrap;
}

.cursorRing.labeled {
    width: 64px;
    height: 64px;
    background: var(--accent);
    border-color: var(--accent);
}

.cursorRing.labeled #cursorLabel {
    opacity: 1;
}

@media (hover: hover) and (pointer: fine) {

    .cursorDot,
    .cursorRing {
        display: flex;
    }
}

/* ---------- Scroll progress ---------- */
.scrollProgress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    z-index: 200;
    background: transparent;
}

.scrollProgress span {
    display: block;
    height: 100%;
    width: 0%;
    background: var(--accent-grad);
}

/* ---------- Reveal-on-scroll ---------- */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.inView {
    opacity: 1;
    transform: translateY(0);
}

.heroLine.reveal {
    transform: translateY(60px);
}

/* ---------- Nav bar ---------- */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 300;
    pointer-events: none;
    padding-bottom: 40px;
    background: linear-gradient(180deg,
            rgba(5, 6, 8, 0.92) 0%,
            rgba(5, 6, 8, 0.78) 55%,
            rgba(5, 6, 8, 0) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.navBar {
    max-width: var(--maxw);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 26px 32px 0;
}

.logoMark {
    pointer-events: auto;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.05rem;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: -0.02em;
    color: var(--text);
}

.dotAccent {
    color: var(--accent);
}

.menuToggle {
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: 12px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text);
}

.menuToggleText {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.menuToggleIcon {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 26px;
}

.menuToggleIcon span {
    height: 1px;
    background: currentColor;
    transition: transform 0.3s;
}

.menuToggle[aria-expanded="true"] .menuToggleIcon span:first-child {
    transform: translateY(3px) rotate(45deg);
}

.menuToggle[aria-expanded="true"] .menuToggleIcon span:last-child {
    transform: translateY(-3px) rotate(-45deg);
}

/* ---------- Full-screen nav overlay ---------- */
.menuOverlay {
    position: fixed;
    inset: 0;
    z-index: 250;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 100px 40px 32px;
    transform: translateY(-100%);
    transition: transform 0.6s cubic-bezier(0.76, 0, 0.24, 1);
}

.menuOverlay.open {
    transform: translateY(0);
}

.menuNav ol {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.menuNav a {
    display: flex;
    align-items: baseline;
    gap: 20px;
    text-decoration: none;
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(1.6rem, 5vw, 2.6rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-dim);
    transition: color 0.25s, padding-left 0.3s;
    padding: 4px 0;
}

.menuNav a:hover,
.menuNav a.active {
    color: var(--text);
    padding-left: 18px;
}

.menuNav a:hover .menuIndex,
.menuNav a.active .menuIndex {
    color: var(--accent);
}

.menuIndex {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--text-dim);
}

.menuFooter {
    display: flex;
    gap: 60px;
    flex-wrap: wrap;
    border-top: 1px solid var(--border);
    padding-top: 24px;
    margin-top: auto;
    flex-shrink: 0;
}

.menuNav {
    margin-top: 24px;
    margin-bottom: 40px;
}

.menuFooterLabel {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    margin-bottom: 6px;
}

.menuFooter a {
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* ---------- Layout helpers ---------- */
.section {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 140px 32px;
    position: relative;
    scroll-margin-top: 90px;
}

.sectionEyebrow {
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 14px;
}

.sectionTitle {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 56px;
    line-height: 1.1;
}

.chipRow {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 14px;
}

.chip {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 0.78rem;
    font-family: 'JetBrains Mono', monospace;
    padding: 6px 12px;
    border-radius: 999px;
    transition: border-color 0.2s, color 0.2s;
}

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

.highlightStat {
    color: var(--accent);
}

.btn {
    position: relative;
    display: inline-block;
    padding: 15px 30px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: transform 0.15s, opacity 0.2s, background 0.2s, box-shadow 0.25s;
}

.btn span {
    position: relative;
    z-index: 1;
}

.btnPrimary {
    background: var(--accent);
    color: #08110a;
}

.btnPrimary:hover {
    box-shadow: 0 10px 30px -8px rgba(217, 255, 75, 0.4);
}

.btnGhost {
    background: transparent;
    border: 1px solid var(--border-strong);
    color: var(--text);
}

.btnGhost:hover {
    background: var(--surface-hover);
}

/* ---------- Hero ---------- */
.hero {
    max-width: var(--maxw);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 140px 32px 60px;
    min-height: 100vh;
    position: relative;
    scroll-margin-top: 90px;
}

.heroKicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text-dim);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    margin-bottom: 28px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.pulseDot {
    position: relative;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
}

.pulseDot::after {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0.35;
    animation: pulseRing 2.2s ease-out infinite;
}

@keyframes pulseRing {
    0% { transform: scale(0.6); opacity: 0.5; }
    100% { transform: scale(2.4); opacity: 0; }
}

.heroTitle {
    display: flex;
    flex-direction: column;
    line-height: 0.9;
    margin-bottom: 60px;
}

.heroLine {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(4rem, 15vw, 11rem);
    letter-spacing: -0.04em;
    will-change: transform;
}

.heroLineOutline {
    color: transparent;
    -webkit-text-stroke: 1.5px var(--text);
    align-self: flex-start;
}

.heroLineFill {
    color: var(--text);
    align-self: flex-end;
    margin-top: -0.08em;
}

.heroLineFill em {
    font-family: 'Fraunces', Georgia, serif;
    font-weight: 500;
    color: var(--accent);
}

.heroBottomRow {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 40px;
    flex-wrap: wrap;
}

.heroDesc {
    color: var(--text-dim);
    max-width: 46ch;
}

.heroActions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    flex-shrink: 0;
}

.scrollCue {
    position: absolute;
    bottom: 24px;
    left: 32px;
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-dim);
}

.scrollCueLine {
    width: 1px;
    height: 50px;
    background: var(--border-strong);
    position: relative;
    overflow: hidden;
}

.scrollCueLine::after {
    content: '';
    position: absolute;
    top: -50px;
    left: 0;
    width: 100%;
    height: 50px;
    background: var(--accent);
    animation: scrollCueDrop 2s ease-in-out infinite;
}

@keyframes scrollCueDrop {
    0% { top: -50px; }
    60% { top: 50px; }
    100% { top: 50px; }
}

.scrollCueText {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    writing-mode: vertical-rl;
}

/* ---------- Marquee ---------- */
.marquee {
    overflow: hidden;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 22px 0;
    background: var(--bg-alt);
    transform: rotate(-1deg) scale(1.03);
    margin: 40px 0;
}

.marqueeTrack {
    display: flex;
    width: max-content;
    gap: 28px;
    animation: marqueeScroll 32s linear infinite;
    white-space: nowrap;
}

.marqueeTrack span {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-dim);
    letter-spacing: -0.01em;
}

.marqueeTrack span:nth-child(4n + 2) {
    color: var(--accent);
}

@keyframes marqueeScroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* ---------- About (paper flip) ---------- */
.sectionPaper {
    max-width: none;
    padding: 0 0 140px;
}

.paperInner {
    background: var(--paper);
    color: var(--paper-text);
    border-radius: 28px;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 90px 56px;
}

.paperEyebrow {
    color: #7a7360;
}

.sectionTitlePaper {
    font-family: 'Fraunces', Georgia, serif;
    font-weight: 500;
    font-size: clamp(1.9rem, 3.6vw, 2.8rem);
    line-height: 1.25;
    margin-bottom: 28px;
    max-width: 20ch;
}

.aboutGrid {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 56px;
    align-items: start;
}

.aboutText p {
    color: var(--paper-dim);
    margin-bottom: 18px;
    max-width: 60ch;
}

.aboutText strong {
    color: var(--paper-text);
}

.aboutImage img {
    border-radius: 18px;
    filter: grayscale(0.5) contrast(1.05);
    transition: filter 0.4s;
}

.aboutImage:hover img {
    filter: grayscale(0) contrast(1);
}

.aboutFacts {
    display: flex;
    gap: 36px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.fact {
    display: flex;
    flex-direction: column;
}

.factNum {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--paper-text);
}

.factLabel {
    color: var(--paper-dim);
    font-size: 0.82rem;
    max-width: 16ch;
}

/* ---------- Experience — editorial index list ---------- */
.indexList {
    border-top: 1px solid var(--border);
}

.indexRow {
    display: grid;
    grid-template-columns: 60px 1fr 160px;
    gap: 24px;
    padding: 34px 16px;
    border-bottom: 1px solid var(--border);
    transition: background 0.3s, padding-left 0.3s;
}

.indexRow:hover {
    background: var(--surface);
    padding-left: 28px;
}

.indexNum {
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent);
    font-size: 0.95rem;
    padding-top: 4px;
}

.indexBody h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.indexOrg {
    color: var(--text-dim);
    font-size: 0.9rem;
    margin-bottom: 14px;
}

.indexBody ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.indexBody li {
    color: var(--text-dim);
    font-size: 0.93rem;
    padding-left: 16px;
    position: relative;
}

.indexBody li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 9px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent-2);
}

.indexDate {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--text-dim);
    text-align: right;
    white-space: nowrap;
    padding-top: 4px;
}

/* ---------- Projects — horizontal scroll gallery ---------- */
.horizontalProjects {
    position: relative;
    height: 380vh;
    scroll-margin-top: 90px;
}

.hzSticky {
    position: sticky;
    top: 0;
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hzHead {
    max-width: var(--maxw);
    margin: 0 auto;
    width: 100%;
    padding: 0 32px;
    margin-bottom: 30px;
}

.hzHead .sectionTitle {
    margin-bottom: 0;
}

.hzTrack {
    display: flex;
    gap: 28px;
    padding-left: max(32px, calc((100vw - var(--maxw)) / 2 + 32px));
    padding-right: 10vw;
    will-change: transform;
}

.projCard {
    position: relative;
    flex: 0 0 auto;
    width: min(420px, 82vw);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 34px 30px;
    overflow: hidden;
}

.projCardNum {
    position: absolute;
    top: -30px;
    right: 10px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 8rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.04);
    line-height: 1;
    pointer-events: none;
}

.projCardBody {
    position: relative;
}

.projectTag {
    display: inline-block;
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    margin-bottom: 10px;
}

.projCardBody h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.projCardBody p {
    color: var(--text-dim);
    font-size: 0.92rem;
}

.projLinks {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 14px;
}

.projLinks a {
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    text-decoration: none;
}

.projLinks a:hover {
    text-decoration: underline;
}

.hzEndCard {
    flex: 0 0 auto;
    width: min(300px, 70vw);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 20px;
    color: var(--text-dim);
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.2rem;
}

.hzProgress {
    max-width: var(--maxw);
    margin: 30px auto 0;
    width: calc(100% - 64px);
    height: 2px;
    background: var(--border);
}

.hzProgress span {
    display: block;
    height: 100%;
    width: 0%;
    background: var(--accent);
}

/* ---------- Research ---------- */
.sectionResearch {
    background: var(--bg-alt);
    border-radius: 28px;
    max-width: calc(var(--maxw) + 64px);
}

.researchHeadline em {
    color: var(--accent-3);
}

.researchGrid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: center;
}

.researchText ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 20px 0;
}

.researchText li {
    color: var(--text-dim);
    font-size: 0.95rem;
    padding-left: 18px;
    position: relative;
}

.researchText li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 9px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent-2);
}

.researchVisual {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

#trajectoryCanvas {
    width: 100%;
    height: 240px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: var(--bg);
}

.visualCaption {
    color: var(--text-dim);
    font-size: 0.78rem;
    text-align: center;
    font-style: italic;
}

/* ---------- Skills ---------- */
.skillsList {
    border-top: 1px solid var(--border);
}

.skillRow {
    display: grid;
    grid-template-columns: 50px 260px 1fr;
    gap: 24px;
    align-items: baseline;
    padding: 30px 16px;
    border-bottom: 1px solid var(--border);
    transition: background 0.3s, padding-left 0.3s;
}

.skillRow:hover {
    background: var(--surface);
    padding-left: 28px;
}

.skillRow h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text);
}

/* ---------- Contact ---------- */
.contactHeadline {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    letter-spacing: -0.02em;
    line-height: 1.08;
    margin-bottom: 56px;
}

.contactHeadline em {
    color: var(--accent);
}

.contactGrid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 48px;
    align-items: start;
}

form {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 32px;
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

form input,
form textarea {
    padding: 13px 16px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--bg-alt);
    color: var(--text);
    font-size: 0.95rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
}

form input::placeholder,
form textarea::placeholder {
    color: var(--text-dim);
}

form input:focus,
form textarea:focus {
    border-color: var(--accent);
}

form button {
    background: var(--accent);
    color: #08110a;
    font-size: 1rem;
    font-weight: 700;
    padding: 14px;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.15s, box-shadow 0.25s;
}

form button:hover {
    box-shadow: 0 10px 30px -8px rgba(217, 255, 75, 0.4);
}

#formMessage {
    margin-top: 4px;
    font-weight: 600;
    font-size: 0.9rem;
}

.contactSide {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.emailCopy {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 16px 18px;
    border-radius: 12px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    transition: border-color 0.2s;
}

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

.copyHint {
    color: var(--accent);
    font-size: 0.72rem;
    text-transform: uppercase;
}

.resumeChips {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.resumeChip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 10px 16px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
    transition: border-color 0.2s, transform 0.2s;
}

.resumeChip:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.social-links {
    display: flex;
    gap: 18px;
}

.social-icon {
    width: 24px;
    height: 24px;
    opacity: 0.75;
    transition: opacity 0.2s, transform 0.2s;
}

.social-icon:hover {
    opacity: 1;
    transform: translateY(-3px);
}

/* ---------- Toast ---------- */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--accent);
    color: #08110a;
    padding: 12px 22px;
    border-radius: 999px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    font-weight: 600;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s, transform 0.3s;
    z-index: 400;
}

.toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ---------- Footer ---------- */
footer {
    text-align: center;
    padding: 40px 20px;
    font-size: 0.85rem;
    color: var(--text-dim);
    border-top: 1px solid var(--border);
    position: relative;
}

footer a {
    color: var(--accent-3);
    text-decoration: none;
}

/* ---------- Back to top ---------- */
.backToTop {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 1px solid var(--border-strong);
    background: var(--bg-alt);
    color: var(--text);
    font-size: 1.1rem;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: opacity 0.25s, transform 0.25s, border-color 0.2s;
    z-index: 90;
}

.backToTop.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

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

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .aboutGrid {
        grid-template-columns: 1fr;
    }

    .aboutImage {
        max-width: 240px;
    }

    .paperInner {
        padding: 60px 28px;
        border-radius: 20px;
    }

    .researchGrid,
    .contactGrid {
        grid-template-columns: 1fr;
    }

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

    .indexDate {
        grid-column: 2;
        text-align: left;
        margin-top: 4px;
    }

    .skillRow {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .skillRow .indexNum {
        display: none;
    }

    /* Disable scroll-jacked gallery on smaller viewports: use native horizontal swipe */
    .horizontalProjects {
        height: auto;
    }

    .hzSticky {
        position: relative;
        height: auto;
        padding: 0 0 20px;
    }

    .hzTrack {
        overflow-x: auto;
        padding-left: 20px;
        transform: none !important;
        scroll-snap-type: x proximity;
        -webkit-overflow-scrolling: touch;
    }

    .projCard {
        scroll-snap-align: start;
    }

    .hzProgress {
        display: none;
    }
}

@media (max-width: 640px) {
    .navBar {
        padding: 20px;
    }

    .section {
        padding: 90px 20px;
    }

    .heroLine {
        font-size: clamp(2.6rem, 16vw, 5rem);
    }

    .heroBottomRow {
        flex-direction: column;
        align-items: flex-start;
    }

    .scrollCue {
        left: 20px;
    }

    .menuOverlay {
        padding: 80px 24px 24px;
    }

    .menuNav a {
        font-size: 1.5rem;
    }

    .menuNav {
        margin-top: 12px;
        margin-bottom: 24px;
    }

    .backToTop {
        right: 16px;
        bottom: 16px;
    }
}