:root {
    --bg: #0a0c12;
    --surface: #12151c;
    --border: rgba(255, 255, 255, 0.08);
    --accent: #67e8f9;
    --accent-glow: #22d3ee;
    --text: #f8fafc;
    --muted: #8b9db0;
    --glass: rgba(255, 255, 255, 0.03);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'JetBrains Mono', monospace;
    overflow-x: hidden;
    cursor: none;
    position: relative;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image: 
        url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.04;
    pointer-events: none;
    z-index: 1;
}

/* CURSOR */
.cursor {
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 9999;
}

@media (pointer: coarse) {
    .cursor {
        display: none;
    }
    body {
        cursor: auto;
    }
}

.cursor-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    position: absolute;
    transform: translate(-50%, -50%);
    transition: transform 0.12s cubic-bezier(0.23, 1, 0.32, 1);
}

.cursor-ring {
    width: 36px;
    height: 36px;
    border: 1.5px solid var(--accent-glow);
    border-radius: 50%;
    position: absolute;
    transform: translate(-50%, -50%);
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    opacity: 0.25;
}

/* NAV — floating pill */
nav {
    position: fixed;
    top: 28px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    background: rgba(18, 21, 28, 0.75);
    backdrop-filter: blur(24px);
    border: 1px solid var(--border);
    border-radius: 9999px;
    padding: 12px 32px;
    display: flex;
    align-items: center;
    gap: 48px;
    box-shadow: 0 8px 32px -12px rgba(103, 232, 249, 0.2);
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    width: max-content;
}

nav.scrolled {
    top: 16px;
    padding: 10px 28px;
    box-shadow: 0 4px 20px -8px rgba(103, 232, 249, 0.3);
}

.nav-logo {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 21px;
    letter-spacing: -1px;
    color: var(--text);
    text-decoration: none;
}

.nav-logo span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    color: var(--muted);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.8px;
    text-decoration: none;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: var(--accent);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.nav-links a:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: 0.3s;
    border-radius: 2px;
}

/* HAMBURGER ANIMATION */
.menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
    nav {
        width: 90%;
        padding: 12px 24px;
        justify-content: space-between;
        gap: 0;
        border-radius: 24px;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 80px;
        left: 50%;
        transform: translateX(-50%) scale(0.9);
        width: calc(100% - 48px);
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: 24px;
        padding: 40px;
        flex-direction: column;
        align-items: center;
        gap: 24px;
        opacity: 0;
        visibility: hidden;
        transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
        pointer-events: none;
        box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    }

    .nav-links.active {
        opacity: 1;
        visibility: visible;
        transform: translateX(-50%) scale(1);
        pointer-events: all;
    }

    .nav-links a {
        font-size: 16px;
    }
}


/* HERO */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 48px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(103, 232, 249, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(34, 211, 238, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(10, 12, 18, 1) 0%, transparent 100%);
    pointer-events: none;
    animation: subtleShift 25s ease infinite;
}

@keyframes subtleShift {
    0% {
        transform: translate(0, 0);
    }

    50% {
        transform: translate(8px, -8px);
    }

    100% {
        transform: translate(0, 0);
    }
}

.hero-content {
    max-width: 920px;
    text-align: center;
    z-index: 2;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 24px;
    border-radius: 9999px;
    border: 1px solid var(--border);
    background: var(--glass);
    color: var(--muted);
    font-size: 12px;
    letter-spacing: 2px;
    margin-bottom: 24px;
    transition: all 0.4s ease;
}

.hero-tag:hover {
    border-color: var(--accent);
    color: var(--text);
    transform: scale(1.05);
}

.hero-tag .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    animation: blink 2s infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

.hero-name {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(64px, 9vw, 120px);
    font-weight: 700;
    line-height: 0.92;
    letter-spacing: -4px;
    margin-bottom: 32px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.hero-name .line2 {
    display: block;
    font-style: italic;
    font-weight: 500;
    font-size: clamp(48px, 6vw, 82px);
    letter-spacing: -3px;
    color: transparent;
    -webkit-text-stroke: 1.5px rgba(103, 232, 249, 0.25);
}

.hero-name .accent {
    color: var(--accent);
    -webkit-text-stroke: 0;
    text-shadow: 0 0 30px rgba(103, 232, 249, 0.3);
}

.hero-sub {
    font-size: 15px;
    max-width: 800px;
    margin: 28px auto 44px;
    color: var(--muted);
    line-height: 1.8;
    text-align: justify;
}

.hero-sub strong {
    color: var(--text);
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 18px 36px;
    border-radius: 9999px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.btn-primary {
    background: var(--accent);
    color: #0a0c12;
    box-shadow: 0 0 0 0 rgba(103, 232, 249, 0.4);
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -10px var(--accent);
}

.btn-ghost {
    border: 2px solid var(--border);
    color: var(--muted);
}

.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-3px);
}

/* SECTIONS */
section {
    padding: 140px 48px 100px;
    max-width: 1240px;
    margin: 0 auto;
}

.section-label {
    font-size: 11px;
    letter-spacing: 3px;
    color: var(--accent);
    margin-bottom: 12px;
    font-weight: 500;
}

.section-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(42px, 6vw, 64px);
    font-weight: 600;
    line-height: 1.05;
    letter-spacing: -2px;
    margin-bottom: 80px;
}

/* EXPERIENCE */
.exp-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 48px;
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.exp-card:hover {
    border-color: var(--accent);
    transform: translateY(-12px);
    box-shadow: 25px 25px 50px -15px rgba(103, 232, 249, 0.15);
}

.exp-meta {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 24px;
}

.exp-role {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 24px;
    font-weight: 600;
}

.exp-date {
    background: rgba(103, 232, 249, 0.1);
    color: var(--accent);
    padding: 6px 18px;
    border-radius: 9999px;
    font-size: 12px;
    font-weight: 500;
}

.exp-company {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 28px;
}

.exp-bullets {
    list-style: none;
}

.exp-bullets li {
    padding-left: 24px;
    position: relative;
    margin-bottom: 12px;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.75;
}

.exp-bullets li::before {
    content: '◆';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-size: 10px;
    top: 4px;
}

.exp-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 32px;
}

.tag {
    background: rgba(103, 232, 249, 0.1);
    color: var(--accent);
    padding: 6px 16px;
    border-radius: 9999px;
    font-size: 12px;
    font-weight: 500;
}

/* STACK */
.stack-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    max-width: 1100px;
    margin: 0 auto;
}

.stack-item {
    flex: 0 1 150px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 20px 12px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    cursor: default;
    backdrop-filter: blur(8px);
}

@media (max-width: 1100px) {
    .stack-item {
        flex: 0 1 calc(20% - 20px);
    }
}

@media (max-width: 850px) {
    .stack-item {
        flex: 0 1 calc(33.33% - 20px);
    }
}

@media (max-width: 500px) {
    .stack-item {
        flex: 0 1 calc(50% - 20px);
    }
}

.stack-item:hover {
    border-color: var(--accent);
    transform: scale(1.08) rotate(2deg);
    box-shadow: 0 20px 30px -15px var(--accent);
}

.stack-item svg {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    transition: filter 0.3s ease;
}

.stack-item:hover svg {
    filter: brightness(1.2) drop-shadow(0 0 12px var(--accent));
}

.stack-item span {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 1.5px;
    color: var(--muted);
}

/* PROJECTS */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
}

.project-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 40px;
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
    position: relative;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-14px);
    border-color: var(--accent);
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 40%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(103, 232, 249, 0.15), transparent);
    transition: left 0.8s;
}

.project-card:hover::before {
    left: 120%;
}

.project-num {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 82px;
    font-weight: 700;
    color: rgba(103, 232, 249, 0.06);
    position: absolute;
    top: 20px;
    right: 24px;
    pointer-events: none;
}

.project-name {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
}

.project-desc {
    color: var(--muted);
    line-height: 1.75;
    font-size: 14px;
    margin-bottom: 24px;
}

/* PUBLICATION */
.pub-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 40px;
    display: flex;
    gap: 32px;
    align-items: flex-start;
    transition: border-color 0.4s ease;
}

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

.pub-icon {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    background: rgba(103, 232, 249, 0.1);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.pub-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 20px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 10px;
}

.pub-venue {
    font-size: 12px;
    color: var(--accent);
    letter-spacing: 1px;
}

/* AWARDS */
.awards-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.award-item {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 24px 32px;
    transition: border-color 0.4s ease;
}

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

.award-medal {
    font-size: 24px;
}

.award-text {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.6;
}

/* CTA */
#cta {
    padding: 160px 48px;
    text-align: center;
    border-top: 1px solid var(--border);
}

#cta .big-text {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(52px, 8vw, 92px);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -3px;
    margin-bottom: 32px;
}

#cta .big-text em {
    color: var(--accent);
    font-style: normal;
}

#cta p {
    max-width: 520px;
    margin: 0 auto 48px;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.7;
}

.contact-links {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

.contact-link {
    padding: 16px 32px;
    border-radius: 9999px;
    border: 1px solid var(--border);
    color: var(--muted);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.4s ease;
}

.contact-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: scale(1.05);
}

.contact-link.primary {
    background: var(--accent);
    color: #0a0c12;
    border-color: var(--accent);
}

.contact-link.primary:hover {
    box-shadow: 0 12px 32px rgba(103, 232, 249, 0.35);
    transform: translateY(-3px) scale(1.03);
}

footer {
    padding: 32px 48px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--muted);
    flex-wrap: wrap;
    gap: 16px;
}

/* SCROLL REVEAL */
.reveal {
    opacity: 0;
    transform: translateY(60px);
    transition: all 1s cubic-bezier(0.23, 1, 0.32, 1);
}

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

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }

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

/* ============================================
   RESPONSIVE — TABLET (max 768px)
   ============================================ */
@media (max-width: 768px) {
    /* Hero */
    #hero {
        padding: 0 20px;
        padding-top: 100px;
        padding-bottom: 60px;
        min-height: auto;
        align-items: flex-start;
    }

    .hero-content {
        text-align: left;
    }

    .hero-tag {
        font-size: 11px;
        letter-spacing: 1.5px;
        padding: 7px 18px;
    }

    .hero-name {
        letter-spacing: -2px;
        text-align: left;
    }

    .hero-sub {
        font-size: 14px;
        text-align: left;
        margin: 20px auto 36px;
    }

    .hero-cta {
        justify-content: flex-start;
    }

    .btn {
        padding: 14px 28px;
        font-size: 12px;
    }

    /* Sections */
    section {
        padding: 80px 20px 60px;
    }

    .section-title {
        margin-bottom: 48px;
        letter-spacing: -1.5px;
    }

    /* Experience Cards */
    .exp-card {
        padding: 28px 20px;
    }

    .exp-role {
        font-size: 20px;
    }

    /* Projects */
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .project-card {
        padding: 28px 24px;
    }

    .project-num {
        font-size: 60px;
    }

    /* Publication */
    .pub-card {
        flex-direction: column;
        gap: 16px;
        padding: 24px 20px;
    }

    .pub-title {
        font-size: 17px;
    }

    /* Awards */
    .award-item {
        padding: 18px 20px;
    }

    /* CTA */
    #cta {
        padding: 80px 20px;
    }

    #cta .big-text {
        letter-spacing: -2px;
    }

    .contact-links {
        flex-direction: column;
        align-items: stretch;
    }

    .contact-link {
        text-align: center;
        padding: 14px 20px;
    }

    /* Footer */
    footer {
        padding: 20px;
        flex-direction: column;
        text-align: center;
        gap: 8px;
    }
}

/* ============================================
   RESPONSIVE — SMALL PHONES (max 480px)
   ============================================ */
@media (max-width: 480px) {
    #hero {
        padding-top: 90px;
    }

    .hero-name {
        letter-spacing: -1.5px;
    }

    section {
        padding: 70px 16px 50px;
    }

    .section-title {
        letter-spacing: -1px;
        margin-bottom: 36px;
    }

    .exp-card {
        padding: 22px 16px;
        border-radius: 16px;
    }

    .exp-role {
        font-size: 18px;
    }

    .exp-date {
        font-size: 11px;
        padding: 5px 12px;
    }

    .project-card {
        padding: 22px 18px;
        border-radius: 16px;
    }

    .project-name {
        font-size: 18px;
    }

    .pub-card {
        padding: 20px 16px;
        border-radius: 16px;
    }

    .award-item {
        padding: 14px 16px;
        border-radius: 14px;
        gap: 14px;
    }

    .award-text {
        font-size: 13px;
    }

    #cta {
        padding: 60px 16px;
    }

    .contact-link {
        font-size: 12px;
    }

    footer {
        padding: 16px;
        font-size: 11px;
    }
}

/* ============================================
   RESPONSIVE — VERY SMALL (max 360px)
   ============================================ */
@media (max-width: 360px) {
    .hero-tag {
        font-size: 10px;
        letter-spacing: 1px;
        padding: 6px 14px;
    }

    .btn {
        padding: 12px 20px;
        font-size: 11px;
        width: 100%;
        justify-content: center;
    }

    .hero-cta {
        flex-direction: column;
    }

    .exp-role {
        font-size: 16px;
    }

    .project-num {
        font-size: 48px;
    }
}