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

:root {
    --primary-color: #bf5700; /* UT Austin burnt orange */
    --primary-hover: #a04800;
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --text-muted: #6b6b6b;
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --border-color: #e0e0e0;
    --link-color: #0066cc;
    --link-hover: #004999;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px;
}

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

a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

/* Hero / Header Section */
.hero {
    padding: 60px 0 40px;
    border-bottom: 1px solid var(--border-color);
}

.profile-section {
    display: flex;
    gap: 32px;
    align-items: flex-start;
}

.profile-photo {
    flex-shrink: 0;
}

.profile-photo img {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--border-color);
}

.photo-placeholder {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    font-weight: 600;
}

.profile-info h1 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.profile-info .title {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.profile-info .affiliation {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.profile-info .advisors {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.contact-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.btn {
    display: inline-block;
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 6px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn:hover {
    background-color: var(--border-color);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    color: white;
}

/* Sections */
.section {
    padding: 40px 0;
    border-bottom: 1px solid var(--border-color);
}

.section:last-of-type {
    border-bottom: none;
}

.section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}

.section p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.section p:last-child {
    margin-bottom: 0;
}

/* Research Interests List */
.research-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    list-style: none;
    padding: 0;
}

.research-list li {
    padding: 12px 16px;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    border-left: 3px solid var(--primary-color);
}

/* Publications */
.pub-item {
    margin-bottom: 28px;
    padding-bottom: 28px;
    border-bottom: 1px dashed var(--border-color);
}

.pub-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.pub-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px !important;
}

.pub-authors {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 4px !important;
}

.pub-venue {
    font-size: 0.9rem;
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 8px !important;
}

.pub-description {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 8px !important;
}

.pub-links {
    display: flex;
    gap: 12px;
}

.pub-link {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--link-color);
}

/* Experience */
.exp-item {
    margin-bottom: 24px;
}

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

.exp-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 4px;
}

.exp-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.exp-date {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.exp-role {
    font-size: 0.95rem;
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 8px !important;
}

.exp-description {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Education */
.edu-item {
    margin-bottom: 20px;
}

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

.edu-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 4px;
}

.edu-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.edu-date {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.edu-degree {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 2px !important;
}

.edu-details {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Footer */
.footer {
    padding: 30px 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Responsive Design */
@media (max-width: 600px) {
    .profile-section {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .profile-info h1 {
        font-size: 1.8rem;
    }

    .contact-links {
        justify-content: center;
    }

    .exp-header,
    .edu-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }

    .research-list {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: 40px 0 30px;
    }

    .section {
        padding: 30px 0;
    }
}