/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #32373c;
    background-color: #fff;
}

a {
    color: #32373c;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Header and Navigation */
header {
    background: #fff;
    border-bottom: 1px solid #e5e5e5;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    gap: 2rem;
    flex-wrap: wrap;
    padding: 0 1rem;
}

nav a {
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s;
}

nav a:hover,
nav a.active {
    text-decoration: none;
    border-bottom-color: #32373c;
}

/* Main content */
main {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Hero section */
.hero {
    text-align: center;
    padding: 3rem 0 4rem;
    border-bottom: 1px solid #e5e5e5;
}

.hero-with-image {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3rem;
    text-align: left;
}

.headshot {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    object-position: 75% 20%;
    flex-shrink: 0;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero .title {
    font-size: 1.1rem;
    color: #555;
    max-width: 600px;
    margin: 0 auto 1rem;
}

.hero .highlight {
    font-size: 1rem;
    color: #666;
}

.hero .highlight em {
    font-style: italic;
}

/* Sections */
section {
    padding: 2.5rem 0;
    border-bottom: 1px solid #e5e5e5;
}

section:last-child {
    border-bottom: none;
}

h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #000;
}

h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* Roles list */
.roles-list {
    list-style: none;
}

.roles-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #f0f0f0;
}

.roles-list li:last-child {
    border-bottom: none;
}

/* Work grid */
.work-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.work-item {
    padding: 1.5rem;
    background: #f9f9f9;
    border-radius: 8px;
}

.work-item h3 {
    margin-bottom: 0.75rem;
}

.work-item p {
    font-size: 0.95rem;
    color: #555;
    margin-bottom: 1rem;
}

/* Buttons */
.btn {
    display: inline-block;
    background: #32373c;
    color: #fff;
    padding: 0.5rem 1.25rem;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.2s;
}

.btn:hover {
    background: #1a1d20;
    text-decoration: none;
}

/* Contact section */
.contact {
    text-align: center;
}

.contact p {
    margin-bottom: 0.75rem;
}

.contact a {
    color: #0066cc;
}

.social-links {
    margin-top: 1.5rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.social-links a {
    padding: 0.5rem 1rem;
    background: #f0f0f0;
    border-radius: 4px;
    font-size: 0.9rem;
}

.social-links a:hover {
    background: #e0e0e0;
    text-decoration: none;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid #e5e5e5;
    font-size: 0.9rem;
    color: #666;
}

/* Bio page styles */
.bio-content {
    font-size: 1.05rem;
    line-height: 1.8;
}

.bio-content p {
    margin-bottom: 1.5rem;
}

/* CV page styles */
.cv-section {
    margin-bottom: 2.5rem;
}

.cv-section h3 {
    font-size: 1.2rem;
    border-bottom: 2px solid #32373c;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

.cv-item {
    margin-bottom: 1rem;
    padding-left: 1rem;
    border-left: 3px solid #e5e5e5;
}

.cv-item .year {
    font-weight: 600;
    color: #666;
    font-size: 0.9rem;
}

.cv-item .description {
    margin-top: 0.25rem;
}

.cv-item em {
    font-style: italic;
}

/* Books page */
.book-entry {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #e5e5e5;
}

.book-entry:last-child {
    border-bottom: none;
}

.book-cover {
    width: 120px;
    height: auto;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.book-cover-placeholder {
    width: 120px;
    height: 180px;
    flex-shrink: 0;
    background: #f0f0f0;
    border: 1px solid #e0e0e0;
}

.book-details {
    flex: 1;
}

.book-entry h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.book-entry .publisher {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
}

.book-entry .awards {
    background: #f9f9f9;
    padding: 1rem;
    border-radius: 4px;
    margin-top: 1rem;
}

.book-entry .awards h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.book-entry .awards ul {
    margin-left: 1.5rem;
    font-size: 0.9rem;
}

/* Papers page */
.papers-list {
    list-style: none;
}

.papers-list li {
    margin-bottom: 1.25rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid #f0f0f0;
}

.papers-list li:last-child {
    border-bottom: none;
}

.papers-list .paper-title {
    font-weight: 500;
    color: #0066cc;
    text-decoration: none;
    display: block;
    margin-bottom: 0.25rem;
}

.papers-list .paper-title:hover {
    text-decoration: underline;
}

.papers-list a.paper-title {
    color: #0066cc;
}

.papers-list .paper-authors {
    color: #666;
    font-size: 0.9rem;
    display: block;
}

.papers-list .paper-journal {
    font-style: italic;
    color: #555;
    font-size: 0.9rem;
    display: block;
}

/* Media page */
.media-section {
    margin-bottom: 2rem;
}

.media-item {
    margin-bottom: 1rem;
    padding: 1rem;
    background: #f9f9f9;
    border-radius: 4px;
}

/* Teaching page */
.teaching-category {
    margin-bottom: 2rem;
}

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

.course-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #f0f0f0;
}

/* Responsive design */
@media (max-width: 768px) {
    nav ul {
        gap: 1rem;
    }

    nav a {
        font-size: 0.8rem;
    }

    .hero-with-image {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }

    .headshot {
        width: 150px;
        height: 150px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    main {
        padding: 1.5rem 1rem;
    }

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

    .book-entry {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .book-cover {
        width: 100px;
    }
}

@media (max-width: 480px) {
    nav ul {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }

    .hero {
        padding: 2rem 0;
    }

    .hero h1 {
        font-size: 1.75rem;
    }
}