/* ============================================
   CGLab - v2 Minimal Aesthetic
   Clean, white, no colored backgrounds
   ============================================ */

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

:root {
    --primary: #2a6b7c;
    --primary-light: #e8f1f3;
    --text: #333;
    --text-light: #666;
    --text-muted: #888;
    --bg: #fff;
    --bg-alt: #f8f9fa;
    --border: #e5e5e5;
}

body {
    font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.65;
    color: var(--text);
    background: var(--bg);
    font-size: 17px;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

h1, h2, h3 {
    font-weight: 600;
    line-height: 1.3;
}

/* External link indicator */
a[target="_blank"]::after {
    content: " ↗";
    font-size: 0.75em;
    opacity: 0.6;
}

a.icon-link::after,
a.map-link::after,
.member-name a::after,
.logo::after {
    content: none;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ============================================
   HEADER
   ============================================ */
.header {
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text);
}

.logo:hover {
    text-decoration: none;
}

.logo img {
    height: 36px;
    width: auto;
}

.logo-placeholder {
    width: 36px;
    height: 36px;
    background: var(--primary);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
}

nav ul {
    display: flex;
    gap: 2rem;
    list-style: none;
}

nav a {
    color: var(--text);
    font-size: 1.05rem;
    font-weight: 600;
}

nav a:hover {
    color: var(--primary);
    text-decoration: none;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    margin: 5px 0;
    transition: 0.3s;
}

/* ============================================
   HERO (v2 - white, minimal, no color)
   ============================================ */
.hero {
    padding: 3rem 0;
    border-bottom: 1px solid var(--border);
}

.hero-inner {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.hero-content {
    flex: 1;
}

.hero h1 {
    font-size: 1.9rem;
    margin-bottom: 1rem;
    color: var(--text);
}

.hero-intro {
    font-size: 1rem;
    color: var(--text-light);
    line-height: 1.7;
}

.hero-intro a {
    font-weight: 500;
}

.hero-figure {
    max-width: 220px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-figure img {
    max-width: 100%;
    max-height: 200px;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 4px;
    display: block;
}

/* When image is present, remove placeholder styling */
.hero-figure:has(img) {
    border: none;
    background: transparent;
    padding: 0;
}

/* ============================================
   SECTIONS
   ============================================ */
section {
    padding: 3rem 0;
    border-bottom: 1px solid var(--border);
}

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

.section-title {
    font-size: 1.35rem;
    color: var(--text);
    margin-bottom: 1.25rem;
    font-weight: 600;
}

.section-link {
    display: inline-block;
    margin-top: 1.25rem;
    color: var(--primary);
    font-weight: 500;
    font-size: 0.9rem;
}

/* ============================================
   RESEARCH
   ============================================ */
.research-intro {
    color: var(--text-light);
    margin-bottom: 1.25rem;
    line-height: 1.7;
}

.research-areas {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.research-area h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.3rem;
}

.research-area p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.55;
}

/* ============================================
   MEMBERS
   ============================================ */
.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1.5rem;
}

.member {
    text-align: center;
}

.member-photo {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    margin: 0 auto 0.5rem;
    overflow: hidden;
    background: var(--bg-alt);
    border: 3px solid var(--border);
    transition: border-color 0.2s ease, transform 0.2s ease;
    position: relative;
}

.member:hover .member-photo {
    border-color: var(--primary);
    transform: scale(1.02);
}

.member-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top; /* Ensures both images align identically */
    transition: opacity 0.3s ease;
}

/* Alt image on hover */
.member-photo img.alt-img {
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
}

.member:hover .member-photo img.alt-img {
    opacity: 1;
}

.member:hover .member-photo img.main-img {
    position: relative;
    /* opacity: 0; */
}

.member-photo-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-alt);
    color: var(--text-muted);
    font-size: 1.5rem;
    font-weight: 300;
}

.member-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text);
    margin-bottom: 0.1rem;
}

.member-name a {
    color: var(--text);
}

.member-name a:hover {
    color: var(--primary);
    text-decoration: none;
}

.member-position {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.3rem;
}

/* Member profile links on homepage */
.member-links {
    display: flex;
    gap: 0.4rem;
    justify-content: center;
    margin-top: 0.25rem;
}

.member-links a {
    color: var(--text-muted);
    transition: color 0.2s ease;
}

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

.member-links svg {
    width: 14px;
    height: 14px;
}

/* Alumni */
.alumni-section {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.alumni-title {
    font-size: 1rem;
    color: var(--text);
    margin-bottom: 1rem;
    font-weight: 600;
}

.alumni-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.5rem;
}

.alumni-item {
    font-size: 0.9rem;
    color: var(--text-light);
}

.alumni-item a {
    color: var(--text);
}

.alumni-position {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.alumni-now {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-style: italic;
}

/* ============================================
   JOIN
   ============================================ */
.join-content p {
    color: var(--text-light);
    margin-bottom: 0.75rem;
    line-height: 1.7;
}

.join-content ul {
    margin: 0.5rem 0 0.75rem 1.25rem;
    color: var(--text-light);
}

.join-content li {
    margin-bottom: 0.3rem;
    font-size: 0.95rem;
}

/* ============================================
   PUBLICATIONS (simplified)
   ============================================ */
.publications-intro {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.publication-item {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}

.publication-item:last-child {
    border-bottom: none;
}

.publication-year {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    font-weight: 600;
}

.publication-title {
    font-weight: 500;
    font-size: 1rem;
    color: var(--text);
    margin: 0.1rem 0;
}

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

.publication-title a:hover {
    color: var(--primary);
}

.publication-authors {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ============================================
   NEWS
   ============================================ */
.news-item {
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border);
}

.news-item:last-child {
    border-bottom: none;
}

.news-date {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.news-title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text);
    margin: 0.1rem 0;
}

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

.news-title a:hover {
    color: var(--primary);
}

/* ============================================
   CONTACT
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 1.5rem;
    align-items: start;
}

.contact-blocks {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-block h3 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--text);
}

.contact-block p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Profile links */
.profile-links {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.75rem;
    flex-wrap: wrap;
}

.profile-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: 0.25rem 0.5rem;
    background: var(--bg-alt);
    border-radius: 3px;
    transition: all 0.2s ease;
}

.profile-links a:hover {
    background: var(--primary);
    color: #fff;
    text-decoration: none;
}

.profile-links svg {
    width: 12px;
    height: 12px;
}

/* Map */
.contact-map {
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.contact-map iframe {
    display: block;
    width: 100%;
    height: 200px;
    border: none;
}

.map-link {
    display: block;
    padding: 0.5rem;
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
    font-size: 0.8rem;
    color: var(--primary);
    text-align: center;
}

.map-link:hover {
    background: var(--primary-light);
    text-decoration: none;
}

/* ============================================
   TIMELINE FOOTER
   ============================================ */
.visual-footer {
    padding: 2rem 0;
    background: var(--bg-alt);
    text-align: center;
    border-top: 1px solid var(--border);
}

.visual-footer img {
    max-width: 100%;
    height: auto;
}

.visual-footer-caption {
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
    background: var(--bg);
    padding: 1.25rem 0;
    text-align: center;
    border-top: 1px solid var(--border);
}

footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

footer a {
    color: var(--text-light);
}

/* ============================================
   MEMBER PAGE
   ============================================ */
.member-page {
    padding: 2rem 0;
}

.member-header {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.member-photo-large {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--bg-alt);
    border: 4px solid var(--border);
    flex-shrink: 0;
    position: relative;
}

.member-photo-large img {
    object-position: center top;
    /* width: 100%; */
    /* height: 100%; */
    /* object-fit: cover; */
    /* display: block; */
}

.member-info h1 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.member-position-large {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.member-email {
    font-size: 0.9rem;
    color: var(--text-light);
}

.member-email-inline {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.15rem;
    word-break: break-all;
}

.member-description {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.member-content {
    color: var(--text-light);
    line-height: 1.7;
}

.member-content h2 {
    font-size: 1.1rem;
    margin: 1.5rem 0 0.75rem;
    color: var(--text);
}

.member-content ul {
    margin-left: 1.25rem;
}

/* ============================================
   POST/NEWS PAGE
   ============================================ */
.post {
    padding: 2rem 0;
}

.post-header {
    margin-bottom: 2rem;
}

.post-title {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

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

.post-content {
    color: var(--text-light);
    line-height: 1.8;
}

.post-content p {
    margin-bottom: 1rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg);
        border-bottom: 1px solid var(--border);
        display: none;
    }

    nav.active {
        display: block;
    }

    nav ul {
        flex-direction: column;
        gap: 0;
        padding: 1rem;
    }

    nav li {
        border-bottom: 1px solid var(--border);
    }

    nav li:last-child {
        border-bottom: none;
    }

    nav a {
        display: block;
        padding: 0.75rem 0;
    }

    .header-inner {
        position: relative;
    }

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

    .hero h1 {
        font-size: 1.5rem;
    }

    .hero-figure {
    max-width: 160px;
    }

    .hero-figure img {
    max-height: 140px;
    }

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

    .members-grid {
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
        gap: 1.25rem;
    }

    .member-photo {
        width: 75px;
        height: 75px;
    }

    .member-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .alumni-list {
        flex-direction: column;
        gap: 0.5rem;
    }

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

    .contact-map iframe {
        height: 180px;
    }

    section {
        padding: 2.5rem 0;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.35rem;
    }

    .hero-intro {
        font-size: 0.95rem;
    }

    .hero-figure {
    max-width: 140px;
    }

    .hero-figure img {
    max-height: 120px;
    }

    .members-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }

    .member-photo {
        width: 65px;
        height: 65px;
    }

    .member-name {
        font-size: 0.8rem;
    }

    .member-position {
        font-size: 0.7rem;
    }

    .member-links {
        display: none;
    }

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

html {
    scroll-behavior: smooth;
}

section[id] {
    scroll-margin-top: 70px;
}