/* ISLANDS Lab Website Styles */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
header {
    background-color: #fff;
    border-bottom: 1px solid #e5e5e5;
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 120px;
    width: auto;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

nav a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    font-size: 16px;
    transition: color 0.3s ease;
    padding: 5px 0;
}

nav a:hover,
nav a.active {
    color: #2c7a7b;
    border-bottom: 2px solid #2c7a7b;
}

/* Hero Banner with Background */
.hero-banner {
    position: relative;
    background-image: url('images/hero-background.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 350px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #e5e5e5;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
}

.hero-banner .container {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-banner h1 {
    font-size: 56px;
    font-weight: 300;
    margin-bottom: 20px;
    color: #ffffff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.8);
}

.hero-banner .tagline {
    font-size: 24px;
    color: #ffffff;
    font-weight: 300;
    font-style: italic;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.8);
}

/* Mission Section */
.mission {
    padding: 80px 0;
    background-color: #fff;
}

.mission-text {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 25px;
    color: #444;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.mission-text strong {
    color: #2c7a7b;
    font-weight: 600;
}

/* News Section */
.news {
    padding: 60px 0;
    background-color: #f8f9fa;
}

.news h2 {
    font-size: 32px;
    font-weight: 400;
    margin-bottom: 40px;
    color: #1a1a1a;
    text-align: center;
}

.news-item {
    padding: 15px 0;
    border-bottom: 1px solid #e5e5e5;
    max-width: 900px;
    margin: 0 auto;
}

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

.news-item.collapsible .news-header {
    cursor: pointer;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    transition: background-color 0.2s ease;
    padding: 5px;
    border-radius: 4px;
}

.news-item.collapsible .news-header:hover {
    background-color: #f0f0f0;
}

.news-date {
    font-weight: 600;
    color: #2c7a7b;
    flex-shrink: 0;
}

.news-content {
    color: #444;
    font-size: 16px;
    flex-grow: 1;
}

.toggle-icon {
    color: #2c7a7b;
    font-size: 12px;
    flex-shrink: 0;
    margin-left: auto;
    transition: transform 0.3s ease;
}

.news-item.expanded .toggle-icon {
    transform: rotate(180deg);
}

.news-details {
    display: none;
    margin-top: 10px;
    padding: 15px 20px;
    background-color: #fff;
    border-left: 3px solid #2c7a7b;
    border-radius: 4px;
    color: #444;
    font-size: 15px;
    line-height: 1.7;
}

.paper-link {
    color: #2c7a7b;
    text-decoration: none;
    font-weight: 500;
    margin-left: 5px;
}

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

/* Affiliation Section */
.affiliation {
    padding: 40px 0;
    background-color: #fff;
    text-align: center;
}

.affiliation p {
    font-size: 16px;
    color: #666;
}

/* Research Page Styles */
.page-header {
    background-color: #f8f9fa;
    padding: 60px 0 40px 0;
    border-bottom: 1px solid #e5e5e5;
}

.page-header h1 {
    font-size: 42px;
    font-weight: 300;
    color: #1a1a1a;
    text-align: center;
}

/* Page Header Banner (for Research page) */
.page-header-banner {
    position: relative;
    background-image: url('images/hero-background.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 250px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #e5e5e5;
}

.page-header-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
}

.page-header-banner .container {
    position: relative;
    z-index: 1;
    text-align: center;
}

.page-header-banner h1 {
    font-size: 48px;
    font-weight: 300;
    color: #ffffff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.8);
}

.content-section {
    padding: 60px 0;
}

.content-section h2 {
    font-size: 28px;
    font-weight: 400;
    margin-bottom: 25px;
    color: #2c7a7b;
}

.content-section h3 {
    font-size: 22px;
    font-weight: 500;
    margin: 30px 0 15px 0;
    color: #1a1a1a;
}

.content-section p,
.content-section ul {
    font-size: 17px;
    line-height: 1.8;
    color: #444;
    margin-bottom: 20px;
}

.content-section ul {
    padding-left: 30px;
}

.content-section li {
    margin-bottom: 12px;
}

.research-image {
    max-width: 100%;
    height: auto;
    margin: 30px 0;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.research-image-medium {
    max-width: 80%;
    height: auto;
    margin: 30px auto;
    display: block;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* Side-by-side image layout */
.image-row {
    display: flex;
    gap: 30px;
    margin: 30px 0;
    flex-wrap: wrap;
}

.image-row-small {
    display: flex;
    gap: 20px;
    margin: 30px auto;
    flex-wrap: wrap;
    max-width: 70%;
}

.image-col {
    flex: 1;
    min-width: 300px;
}

.research-image-half {
    width: 100%;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.research-image-small {
    width: 100%;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.image-col .caption {
    margin-top: 10px;
}

.caption {
    font-size: 14px;
    color: #666;
    font-style: italic;
    text-align: center;
    margin-top: 10px;
}

/* People Page Styles */
.person-card {
    display: flex;
    gap: 30px;
    margin-bottom: 50px;
    padding-bottom: 50px;
    border-bottom: 1px solid #e5e5e5;
}

.person-card:last-child {
    border-bottom: none;
}

.person-image {
    flex-shrink: 0;
}

.person-image img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 50%;
}

.person-info h3 {
    font-size: 26px;
    font-weight: 500;
    margin-bottom: 8px;
    color: #1a1a1a;
}

.person-title {
    font-size: 16px;
    color: #2c7a7b;
    margin-bottom: 15px;
    font-weight: 500;
}

.person-bio {
    font-size: 16px;
    line-height: 1.7;
    color: #444;
    margin-bottom: 15px;
}

.person-links {
    margin-top: 15px;
}

.person-links a {
    color: #2c7a7b;
    text-decoration: none;
    margin-right: 20px;
    font-weight: 500;
}

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

.student-list {
    list-style: none;
    padding: 0;
    margin: 20px 0 40px 0;
}

.student-list li {
    padding: 12px 0;
    border-bottom: 1px solid #e5e5e5;
    color: #444;
    line-height: 1.6;
}

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

/* Publications Page */
.publication {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e5e5e5;
}

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

.pub-authors {
    font-weight: 500;
    color: #1a1a1a;
    margin-bottom: 5px;
}

.pub-title {
    font-style: italic;
    color: #2c7a7b;
    margin-bottom: 5px;
}

.pub-details {
    color: #666;
    font-size: 15px;
}

.pub-link {
    color: #2c7a7b;
    text-decoration: none;
    font-weight: 500;
}

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

/* Resources Page */
.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.resource-card {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    border: 1px solid #e5e5e5;
    transition: box-shadow 0.3s ease;
}

.resource-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.resource-card h3 {
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 15px;
    color: #2c7a7b;
}

.resource-card p {
    font-size: 16px;
    color: #444;
    margin-bottom: 15px;
}

.resource-card a {
    color: #2c7a7b;
    text-decoration: none;
    font-weight: 500;
}

.resource-card a:hover {
    text-decoration: underline;
}

/* Footer Styles */
footer {
    background-color: #1a1a1a;
    color: #fff;
    padding: 20px 0;
    margin-top: 60px;
}

.footer-horizontal {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    color: #ccc;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-left .separator {
    color: #666;
}

.footer-right {
    color: #999;
}

/* Responsive Design */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 20px;
    }
    
    nav ul {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .hero-banner {
        min-height: 300px;
    }
    
    .hero-banner h1 {
        font-size: 36px;
    }
    
    .hero-banner .tagline {
        font-size: 18px;
    }
    
    .person-card {
        flex-direction: column;
        text-align: center;
    }
    
    .person-image img {
        margin: 0 auto;
    }
    
    .footer-horizontal {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .footer-left {
        flex-direction: column;
        gap: 5px;
    }
    
    .footer-left .separator {
        display: none;
    }
    
    .image-row {
        flex-direction: column;
        gap: 20px;
    }
    
    .image-row-small {
        flex-direction: column;
        gap: 20px;
        max-width: 100%;
    }
    
    .image-col {
        min-width: 100%;
    }
    
    .research-image-medium {
        max-width: 100%;
    }
    
    .logo img {
        height: 90px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .mission-text,
    .content-section p {
        font-size: 16px;
    }
    
    .hero-banner {
        min-height: 250px;
    }
    
    .hero-banner h1 {
        font-size: 32px;
    }
    
    .hero-banner .tagline {
        font-size: 16px;
    }
    
    .logo img {
        height: 70px;
    }
}

/* Email Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.7);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    padding: 40px;
    border-radius: 10px;
    max-width: 500px;
    width: 90%;
    color: white;
    position: relative;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}

.modal-content h2 {
    margin-bottom: 20px;
    font-size: 28px;
    font-weight: 400;
}

.modal-content p {
    margin: 15px 0;
    font-size: 16px;
    line-height: 1.6;
}

.close {
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 35px;
    font-weight: 300;
    color: #fff;
    cursor: pointer;
    transition: color 0.3s;
}

.close:hover {
    color: #2c7a7b;
}