:root {
    /* UT Austin Brand Colors */
    --ut-burnt-orange: #BF5700;
    --ut-dark-orange: #9d4700;
    
    /* Warm Wooden Palette */
    --warm-cream: #FAF7F2;
    --warm-beige: #E8DFD4;
    --soft-brown: #A88F7A;
    --rich-brown: #6B5B4D;
    --charcoal: #2C2823;
    
    /* Accent Colors */
    --accent-sage: #8B9F87;
    --warm-white: #FFFCF7;
    
    /* Typography */
    --font-display: 'Cormorant Garamond', serif;
    --font-body: 'Spectral', serif;
    
    /* Spacing */
    --section-padding: 6rem 2rem;
    --container-max: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--charcoal);
    background-color: var(--warm-cream);
    line-height: 1.7;
    font-size: 17px;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

a {
    color: var(--ut-burnt-orange);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--ut-dark-orange);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(250, 247, 242, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--warm-beige);
    z-index: 1000;
    padding: 1rem 0;
    animation: slideDown 0.6s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--charcoal);
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--rich-brown);
    font-weight: 400;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--ut-burnt-orange);
    transition: width 0.3s ease;
}

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

/* Hero Section */
.hero {
    margin-top: 80px;
    padding: 5rem 2rem 6rem;
    background: linear-gradient(135deg, var(--warm-cream) 0%, var(--warm-white) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 150%;
    background: radial-gradient(circle, rgba(191, 87, 0, 0.03) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-20px, 20px) rotate(5deg); }
}

.hero-container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text {
    animation: fadeInUp 0.8s ease 0.2s both;
}

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

.hero-title {
    margin-bottom: 0.5rem;
    color: var(--charcoal);
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--ut-burnt-orange);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.hero-institution {
    font-size: 1.1rem;
    color: var(--soft-brown);
    margin-bottom: 1.5rem;
}

.hero-divider {
    width: 80px;
    height: 3px;
    background: var(--ut-burnt-orange);
    margin: 1.5rem 0;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--rich-brown);
    margin-bottom: 2rem;
    max-width: 600px;
}

.hero-links {
    display: flex;
    gap: 1rem;
    margin-top: 2.5rem;
}

.hero-button {
    padding: 0.9rem 2rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    display: inline-block;
    letter-spacing: 0.3px;
}

.hero-button.primary {
    background: var(--ut-burnt-orange);
    color: white;
    box-shadow: 0 4px 12px rgba(191, 87, 0, 0.2);
}

.hero-button.primary:hover {
    background: var(--ut-dark-orange);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(191, 87, 0, 0.3);
}

.hero-button.secondary {
    background: transparent;
    color: var(--ut-burnt-orange);
    border: 2px solid var(--ut-burnt-orange);
}

.hero-button.secondary:hover {
    background: var(--ut-burnt-orange);
    color: white;
}

.hero-image {
    position: relative;
    animation: fadeInRight 0.8s ease 0.4s both;
}

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

.image-frame {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(44, 40, 35, 0.15);
    background: var(--warm-beige);
}

.image-frame img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.ut-brand-accent {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 150px;
    height: 150px;
    background: var(--ut-burnt-orange);
    opacity: 0.1;
    border-radius: 12px;
    z-index: -1;
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: var(--warm-cream);
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Section Titles */
.section-title {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--ut-burnt-orange);
}

.section-intro {
    text-align: center;
    max-width: 800px;
    margin: -1rem auto 3rem;
    font-size: 1.1rem;
    color: var(--rich-brown);
}

/* About Section */
.about {
    padding: var(--section-padding);
    background: var(--warm-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 3rem;
}

.about-main {
    animation: fadeIn 0.8s ease;
}

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

.about-main p {
    margin-bottom: 1.5rem;
}

.about-main .lead {
    font-size: 1.2rem;
    color: var(--rich-brown);
    font-weight: 400;
}

.about-sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-card {
    background: var(--warm-cream);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--warm-beige);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.info-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(44, 40, 35, 0.08);
}

.info-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1.25rem;
    color: var(--ut-burnt-orange);
}

.tag-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--rich-brown);
    border: 1px solid var(--warm-beige);
    transition: all 0.3s ease;
}

.tag:hover {
    background: var(--ut-burnt-orange);
    color: white;
    border-color: var(--ut-burnt-orange);
}

.education-item {
    margin-bottom: 1.5rem;
}

.education-item:last-child {
    margin-bottom: 0;
}

.degree {
    font-weight: 600;
    color: var(--charcoal);
    margin-bottom: 0.25rem;
}

.institution {
    color: var(--soft-brown);
    font-size: 0.95rem;
}

.year {
    color: var(--ut-burnt-orange);
    font-size: 0.9rem;
    font-weight: 600;
}

/* Research Section */
.research {
    padding: var(--section-padding);
    background: var(--warm-cream);
}

.research-areas {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.research-area {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--ut-burnt-orange);
    box-shadow: 0 4px 12px rgba(44, 40, 35, 0.05);
}

.research-area h3 {
    margin-bottom: 1rem;
    color: var(--ut-burnt-orange);
}

.research-area ul {
    list-style: none;
}

.research-area li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.research-area li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--soft-brown);
}

.subsection-title {
    margin: 3rem 0 2rem;
    color: var(--charcoal);
}

.papers {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.paper {
    background: white;
    padding: 1.75rem 2rem;
    border-radius: 8px;
    border-left: 3px solid var(--accent-sage);
    transition: all 0.3s ease;
}

.paper:hover {
    transform: translateX(8px);
    box-shadow: 0 8px 20px rgba(44, 40, 35, 0.08);
}

.paper-title {
    font-size: 1.3rem;
    color: var(--charcoal);
    margin-bottom: 0.5rem;
}

.paper-status {
    color: var(--soft-brown);
    font-style: italic;
    font-size: 0.95rem;
}

/* Teaching Section */
.teaching {
    padding: var(--section-padding);
    background: var(--warm-white);
}

.teaching-experience {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.teaching-role {
    background: var(--warm-cream);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--warm-beige);
}

.role-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--ut-burnt-orange);
    padding-bottom: 0.75rem;
}

.role-header h3 {
    color: var(--ut-burnt-orange);
}

.semester {
    color: var(--soft-brown);
    font-weight: 600;
    font-size: 0.95rem;
}

.course {
    font-weight: 600;
    color: var(--charcoal);
    margin-top: 0.75rem;
    font-size: 1.1rem;
}

.professor {
    color: var(--soft-brown);
    font-size: 0.95rem;
    margin: 0.25rem 0;
}

.course-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 1rem;
}

.course-item {
    padding-left: 1.5rem;
    border-left: 2px solid var(--warm-beige);
}

.semester-detail {
    color: var(--ut-burnt-orange);
    font-size: 0.9rem;
    font-weight: 600;
}

/* CV Section */
.cv-section {
    padding: var(--section-padding);
    background: var(--warm-cream);
}

.cv-download {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cv-download p {
    margin-bottom: 2rem;
    color: var(--rich-brown);
    font-size: 1.1rem;
}

.download-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.25rem 2.5rem;
    background: var(--ut-burnt-orange);
    color: white;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(191, 87, 0, 0.2);
}

.download-button:hover {
    background: var(--ut-dark-orange);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(191, 87, 0, 0.3);
}

.download-button svg {
    transition: transform 0.3s ease;
}

.download-button:hover svg {
    transform: translateY(3px);
}

/* Contact Section */
.contact {
    padding: var(--section-padding);
    background: var(--warm-white);
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-intro {
    text-align: center;
    font-size: 1.15rem;
    color: var(--rich-brown);
    margin-bottom: 3rem;
}

.contact-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
}

.contact-item h4 {
    color: var(--ut-burnt-orange);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.contact-item a {
    display: block;
    margin-top: 0.5rem;
}

.contact-item p {
    color: var(--rich-brown);
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--charcoal);
    color: var(--warm-beige);
    padding: 2rem;
    text-align: center;
}

.footer p {
    margin: 0.5rem 0;
}

.footer-note {
    font-size: 0.95rem;
    color: var(--soft-brown);
}

/* Responsive Design */
@media (max-width: 968px) {
    :root {
        --section-padding: 4rem 1.5rem;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .nav-links {
        gap: 1.5rem;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-image {
        max-width: 400px;
        margin: 0 auto;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .research-areas {
        grid-template-columns: 1fr;
    }
    
    .contact-details {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 640px) {
    .nav-links {
        display: none;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .hero {
        padding: 3rem 1rem 2rem;
    }
    
    .hero-links {
        flex-direction: column;
    }
    
    .hero-button {
        text-align: center;
    }
    
    .role-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}