:root {
    --bg-primary: #F8F5F0;
    --bg-secondary: #EDE8E0;
    --text-primary: #1C1917;
    --text-secondary: #57534E;
    --text-muted: #78716C;
    --accent: #9F4636;
    --accent-hover: #7C3529;
    --border: #D6D3CE;
    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Libre Franklin', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 16px;
    font-weight: 300;
}

::selection {
    background: var(--accent);
    color: white;
}

/* Grain overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.03;
    z-index: 1000;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Layout */
.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 4rem;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.5rem 0;
    background: linear-gradient(to bottom, var(--bg-primary) 60%, transparent);
    animation: fadeIn 1s ease 0.2s both;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.02em;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width 0.3s ease;
}

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

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

/* Hero */
.hero {
    min-height: 100vh;
    padding: 8rem 0 4rem;
}

.hero .container {
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: 4rem;
    align-items: start;
}

.hero-left {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    animation: slideUp 0.8s ease 0.4s both;
}

.hero-right {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    animation: slideUp 0.8s ease 0.6s both;
}

.hero-about {
    background: var(--bg-secondary);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.hero-label {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.hero-label::before {
    content: '';
    width: 40px;
    height: 1px;
    background: var(--accent);
}

.hero-name {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 5.5vw, 4rem);
    font-weight: 400;
    line-height: 1.05;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.hero-name em {
    font-style: italic;
    color: var(--accent);
}

.hero-title {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 400px;
}

.scholar-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    color: var(--text-primary);
    text-decoration: none;
    transition: transform 0.2s ease;
}

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

.stat-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.stat-item:hover .stat-label {
    color: var(--accent);
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border: 1px solid var(--text-primary);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.hero-cta:hover {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.hero-cta svg {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.hero-cta:hover svg {
    transform: translateX(4px);
}

.hero-image {
    position: relative;
}


.hero-image img {
    width: 280px;
    height: auto;
    object-fit: contain;
}

.hero-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.hero-link-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.hero-link-item:hover {
    color: var(--accent);
}

.hero-link-item svg {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
    color: var(--text-muted);
}

.hero-link-item:hover svg {
    color: var(--accent);
}

.hero-image-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-style: italic;
    color: var(--text-muted);
}

/* Section styling */
section {
    padding: 8rem 0;
}

.section-header {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
    align-items: start;
}

.section-number {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-muted);
    line-height: 1;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: 1rem;
}

.section-subtitle {
    color: var(--text-secondary);
    max-width: 500px;
}

/* About */
.about {
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 200px 1fr 300px;
    gap: 4rem;
}

.about-text {
    font-size: 1.125rem;
    line-height: 1.9;
}

.about-text p + p {
    margin-top: 1.5rem;
}

.about-highlight {
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    border-left: 3px solid var(--accent);
    background: rgba(159, 70, 54, 0.06);
    color: var(--text-primary);
    font-style: italic;
}

.about-sidebar {
    padding-top: 0.5rem;
}

.about-sidebar h4 {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.about-sidebar ul {
    list-style: none;
    margin-bottom: 2.5rem;
}

.about-sidebar li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.9375rem;
}

/* Research Interests */
.interests-grid {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 4rem;
}

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

.interest-item {
    padding: 2rem;
    background: var(--bg-secondary);
    position: relative;
    transition: transform 0.3s ease;
}

.interest-item:hover {
    transform: translateY(-4px);
}

.interest-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--accent);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.3s ease;
}

.interest-item:hover::before {
    transform: scaleY(1);
}

.interest-number {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--border);
    margin-bottom: 1rem;
}

.interest-title {
    font-family: var(--font-display);
    font-size: 1.375rem;
    margin-bottom: 0.75rem;
}

.interest-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

/* Projects */
.projects {
    background: var(--bg-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 4rem;
}

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

.project-card {
    padding: 2rem;
    background: var(--bg-primary);
    position: relative;
    transition: transform 0.3s ease;
}

.project-card:hover {
    transform: translateY(-4px);
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.project-card:hover::before {
    transform: scaleX(1);
}

.project-title {
    font-family: var(--font-display);
    font-size: 1.375rem;
    margin-bottom: 0.75rem;
}

.project-title a {
    color: var(--text-primary);
}

.project-title a:hover {
    color: var(--accent);
}

.project-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.project-venue {
    font-size: 0.8125rem;
    font-style: italic;
    color: var(--accent);
}

/* Publications */
.publications {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.publications .section-number {
    color: #8A8580;
}

.publications .section-subtitle {
    color: #B8B3AB;
}

.pub-list {
    display: flex;
    flex-direction: column;
}

.pub-year-index {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
    padding: 1rem 0 1.5rem;
    border-bottom: 1px solid var(--text-secondary);
    position: sticky;
    top: 4rem;
    z-index: 50;
    background: var(--text-primary);
}

.pub-year-index a {
    color: var(--bg-primary);
    font-family: var(--font-display);
    font-size: 1.25rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--text-secondary);
    transition: all 0.2s ease;
}

.pub-year-index a:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
    border-color: var(--bg-primary);
}

.pub-year-group {
    display: grid;
    grid-template-columns: 200px 1fr;
    column-gap: 4rem;
    margin-bottom: 3rem;
    scroll-margin-top: 15rem;
}

.pub-year-header {
    font-family: var(--font-display);
    font-size: 2rem;
    color: #FFFFFF;
    padding-top: 1.5rem;
    position: sticky;
    top: 15rem;
    align-self: start;
}

.pub-year-papers {
    display: flex;
    flex-direction: column;
}

.pub-item {
    padding: 1.5rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 2rem;
    align-items: start;
    transition: opacity 0.3s ease;
}

.pub-year-group:hover .pub-year-papers .pub-item {
    opacity: 0.4;
}

.pub-year-group:hover .pub-year-papers .pub-item:hover {
    opacity: 1;
}

.pub-info h3 {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
    line-height: 1.4;
    color: #FFFFFF;
}

.pub-info h3 a {
    color: #FFFFFF;
}

.pub-info h3 a:hover {
    color: #D4775C;
}

.pub-authors {
    font-size: 0.9375rem;
    color: #B8B3AB;
    margin-bottom: 0.25rem;
}

.pub-venue {
    font-size: 0.875rem;
    font-style: italic;
    color: #D4775C;
}

.pub-link {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--bg-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
}

.pub-item:hover .pub-link {
    opacity: 1;
    transform: translateX(0);
}

.pub-link svg {
    width: 14px;
    height: 14px;
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 200px 1fr 1fr;
    gap: 4rem;
}

.contact-main h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: 1.5rem;
}

.contact-main p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 400px;
}

.contact-email {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--accent);
    display: inline-block;
    position: relative;
}

.contact-email::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.contact-email:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.contact-details h4 {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.contact-details address {
    font-style: normal;
    line-height: 1.8;
    color: var(--text-secondary);
}

.social-links {
    display: flex;
    gap: 1.5rem;
    margin-top: 2rem;
}

.social-links a {
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--text-primary);
    border-color: var(--text-primary);
    color: var(--bg-primary);
}

.social-links svg {
    width: 18px;
    height: 18px;
}

/* Info two-col layout (service, awards, students) */
.info-two-col {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 4rem;
    align-items: start;
}

.service-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
}

.service-group h4 {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.service-list {
    list-style: none;
}

.service-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.9375rem;
}

.award-list {
    list-style: none;
}

.award-list li {
    padding: 0.625rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.9375rem;
}

.award-list li::before {
    content: '—';
    margin-right: 0.75rem;
    color: var(--accent);
}

.intern-intro {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.intern-grid {
    display: flex;
    flex-direction: column;
}

.intern-row {
    display: grid;
    grid-template-columns: 3.5rem 1fr;
    gap: 1.5rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    align-items: baseline;
}

.intern-year {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent);
}

.intern-names {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

/* Footer */
footer {
    padding: 3rem 0;
    border-top: 1px solid var(--border);
}

footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

footer p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Responsive */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }


    .section-header,
    .about-content,
    .interests-grid,
    .projects-grid,
    .pub-year-group,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .section-number {
        font-size: 2.5rem;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

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

    .pub-item {
        grid-template-columns: 1fr;
    }

    .pub-link {
        opacity: 1;
        transform: none;
        margin-top: 0.5rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero {
        padding: 6rem 0 3rem;
        min-height: auto;
    }

    .scholar-stats {
        gap: 1.5rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .hero-image-placeholder,
    .hero-image img {
        width: 100%;
        height: auto;
    }

    section {
        padding: 5rem 0;
    }

    .interests-list,
    .projects-list {
        grid-template-columns: 1fr;
    }

    .about-sidebar {
        grid-template-columns: 1fr;
    }

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

    .info-two-col {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .service-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}