/* Modern Academic Homepage Stylesheet */

:root {
    --primary-color: #12306f;
    --secondary-color: #1b4694;
    --accent-color: #0b5f95;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f4f6f8;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --spacing-xs: 0.35rem;
    --spacing-sm: 0.7rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.35rem;
    --spacing-xl: 2rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

/* Navigation */
.main-nav {
    background-color: var(--primary-color);
    color: white;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 4px rgba(15, 23, 42, 0.16);
}

.nav-container {
    width: 100%;
    padding: 0 clamp(1rem, 3vw, 3rem);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 52px;
}

.nav-brand {
    font-size: 1.25rem;
    font-weight: 700;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-size: 0.95rem;
    transition: opacity 0.2s;
}

.nav-links a:hover {
    opacity: 0.8;
}

@media (max-width: 768px) {
    .nav-links {
        gap: var(--spacing-sm);
        font-size: 0.85rem;
    }
}

/* Sections */
section {
    width: 100%;
    padding: var(--spacing-md) clamp(1rem, 2.5vw, 3rem);
    background-color: var(--bg-white);
}

section h2 {
    font-size: 1.55rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
    padding-bottom: 0.25rem;
    border-bottom: 1px solid var(--accent-color);
}

section h3 {
    font-size: 1.2rem;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--secondary-color);
}

/* Home Section */
.home-section {
    background-color: #f8fafc;
    color: var(--text-dark);
    padding: var(--spacing-md) clamp(1rem, 2.5vw, 3rem);
    border-bottom: 1px solid var(--border-color);
}

.home-container {
    width: 100%;
}

.profile-card {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    grid-template-areas: "photo info";
    gap: var(--spacing-lg);
    align-items: center;
}

.profile-photo {
    grid-area: photo;
    width: 100%;
    max-width: 180px;
    border-radius: 8px;
    box-shadow: 0 6px 16px rgba(15, 23, 42, 0.16);
}

.profile-info {
    grid-area: info;
}

.profile-info h1 {
    font-size: 1.85rem;
    margin-bottom: var(--spacing-xs);
    color: var(--primary-color);
}

.profile-info .title {
    font-size: 1.05rem;
    margin-bottom: 0.35rem;
    font-weight: 600;
}

.profile-info .institution {
    font-size: 1rem;
    margin-bottom: 0.2rem;
}

.profile-info a {
    color: var(--primary-color);
    text-decoration: underline;
}

.profile-contact {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem 1.25rem;
    margin-top: 0.45rem;
    padding-top: 0.45rem;
    border-top: 1px solid var(--border-color);
    color: #374151;
    font-size: 0.95rem;
}

.profile-contact p {
    margin: 0;
}

@media (max-width: 768px) {
    .profile-card {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .profile-info h1 {
        font-size: 2rem;
    }
}

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

.publication-subject {
    margin-bottom: var(--spacing-md);
}

.publication-subject::after {
    content: "";
    display: block;
    clear: both;
}

.publication-subject h3 {
    margin-top: var(--spacing-md);
    margin-bottom: 0.4rem;
}

.publication-entry {
    margin-bottom: 0.32rem;
    padding: 0;
    background-color: transparent;
}

.publication-citation {
    line-height: 1.38;
    margin-bottom: 0;
    max-width: none;
}

.publication-title {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.publication-title:hover {
    text-decoration: underline;
    color: var(--secondary-color);
}

.publication-authors {
    color: #0f172a;
    font-weight: 500;
}

.author-link {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px dotted #64748b;
}

.author-link:hover {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.publication-venue {
    color: #374151;
    font-style: italic;
}

.publication-links {
    display: inline;
    margin-left: 0.35rem;
    font-size: 0.92rem;
}

.pub-link {
    display: inline;
    padding: 0;
    background-color: transparent;
    color: var(--accent-color);
    text-decoration: none;
    border: 0;
}

.pub-link:hover {
    text-decoration: underline;
}

.pub-award {
    color: #7c2d12;
    font-size: 0.92rem;
    font-weight: 600;
}

.pub-note {
    color: #374151;
    font-size: 0.92rem;
    font-weight: 400;
}

.publication-figure {
    float: right;
    width: clamp(260px, 30vw, 430px);
    margin: 0 0 0.7rem 1.25rem;
    padding: 0.35rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: #fbfdff;
}

.publication-figure img {
    display: block;
    width: 100%;
    max-height: 320px;
    object-fit: contain;
}

/* Teaching */
.teaching-section {
    background-color: var(--bg-white);
}

.software-section {
    background-color: var(--bg-white);
}

.section-intro {
    margin-bottom: var(--spacing-sm);
    line-height: 1.45;
}

.course-list, .software-list {
    list-style: none;
    margin-bottom: var(--spacing-sm);
}

.course-list li, .software-list li {
    margin-bottom: 0.45rem;
    padding-left: 1rem;
    position: relative;
}

.course-list li::before, .software-list li::before {
    content: "";
    width: 0.25rem;
    height: 0.25rem;
    top: 0.72em;
    border-radius: 50%;
    background-color: var(--accent-color);
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.course-list a, .software-list a {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
}

.course-list a:hover, .software-list a:hover {
    text-decoration: underline;
}

/* Biography */
.biography-section {
    background-color: var(--bg-white);
}

.biography-section p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.55;
}

.awards-inline {
    color: #374151;
}

.biography-section ul {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.biography-section li {
    margin-bottom: var(--spacing-xs);
}

/* Past Events */
.past-events-list {
    display: grid;
    gap: 0.45rem;
}

.past-event {
    display: grid;
    grid-template-columns: 4rem minmax(0, 1fr);
    gap: 0.75rem;
    align-items: baseline;
}

.past-event-year {
    color: var(--secondary-color);
    font-weight: 700;
}

.past-event-content {
    line-height: 1.45;
}

.past-event-content a {
    color: var(--primary-color);
    text-decoration: none;
}

.past-event-content a:hover {
    text-decoration: underline;
}

.event-separator {
    color: #64748b;
}

/* Useful Links */
.links-section {
    background-color: var(--bg-white);
}

.links-inline {
    line-height: 1.55;
}

.links-inline a {
    color: var(--primary-color);
    font-weight: 500;
    text-decoration: none;
}

.links-inline a:hover {
    text-decoration: underline;
}

/* Contact */
.contact-section {
    background-color: var(--bg-white);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-md);
    align-items: start;
}

.contact-block h3 {
    margin-top: 0;
    margin-bottom: 0.3rem;
}

.contact-block p {
    line-height: 1.55;
    margin: 0;
}

.contact-info a {
    color: var(--accent-color);
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* Research */
.research-section {
    background-color: var(--bg-white);
}

.research-section p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: white;
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
    border: none;
}

.footer p {
    margin-bottom: var(--spacing-xs);
}

.footer a {
    color: white;
    text-decoration: underline;
}

.footer a:hover {
    opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
    section {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    section h2 {
        font-size: 1.5rem;
    }
    
    section h3 {
        font-size: 1.2rem;
    }

    .publication-figure {
        float: none;
        width: min(100%, 420px);
        margin: 0.35rem 0 var(--spacing-sm);
    }

    .past-event {
        grid-template-columns: 3.5rem minmax(0, 1fr);
        gap: 0.5rem;
    }
}