/* 
  Modern Light Mode CSS - Multi-Page Setup
  Theme: Original site colors (White/Slate background, Maroon and Sage accents)
*/
@import url('https://fonts.googleapis.com/css2?family=EB+Garamond:wght@400;500;600;700;800&display=swap');
:root {
    /* Colors */
    --bg-base: #f8fafc; /* Very light slate */
    --bg-surface: #ffffff; 
    --bg-surface-light: #f1f5f9; 
    --card-bg: #ffffff;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --accent-primary: #980000; /* Maroon */
    --accent-secondary: #b6d7a8; /* Sage green */
    --accent-gradient: linear-gradient(135deg, var(--accent-primary), var(--accent-primary));
    
    --border-color: #e2e8f0;
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-medium: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-glow: 0 4px 15px rgba(152, 0, 0, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
}

.page-padding {
    padding-top: 80px; /* offset for fixed navbar on inner pages */
}

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

a:hover {
    color: var(--text-primary);
}

ul {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.highlight {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.page-title {
    font-size: 3rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.page-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    border-radius: 2px;
    background: var(--accent-primary);
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

/* ---------- Navigation ---------- */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: #0f172a; /* Dark background matching classic site header */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 3px solid var(--accent-primary);
    transition: background-color var(--transition-medium), padding var(--transition-medium);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: 0.5px;
    letter-spacing: 1px;
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-link {
    color: #cbd5e1; /* Light gray for tabs */
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding-bottom: 4px;
}

.nav-link.active {
    color: #ffffff;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--accent-primary);
    transition: width var(--transition-fast);
}

.nav-link.active::after, .nav-link:hover::after {
    width: 100%;
}

.nav-link:hover {
    color: #ffffff;
}

.external-btn {
    background: transparent;
    border: 1px solid var(--accent-primary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition-fast);
}
.external-btn::after { display: none; }
.external-btn:hover {
    background: var(--accent-primary);
    color: #ffffff;
    transform: translateY(-2px);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.8rem;
    font-weight: 600;
    border-radius: 8px;
    transition: all var(--transition-fast);
    cursor: pointer;
    font-family: var(--font-heading);
}

.btn-primary {
    background: var(--accent-primary);
    color: #fff;
    box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(152, 0, 0, 0.2);
    color: #fff;
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--text-primary);
    color: var(--text-primary);
}
.btn-secondary:hover {
    background: var(--text-primary);
    color: #fff;
}

/* ---------- Fullscreen Hero Section ---------- */
.hero-fullscreen {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-bg-gif {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.5); /* Darker overlay */
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 2rem;
}

.hero-content {
    max-width: 900px;
    z-index: 3;
}

.hero-title {
    font-family: 'EB Garamond', serif;
    font-size: 5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: #d9ead3;
    text-shadow: 0 4px 15px rgba(0,0,0,0.8);
}

.title-accent {
    color: #b6d7a8;
}

.hero-subtitle {
    display: none;
}

/* ---------- Home Content / Grid ---------- */
.home-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
}

.card-title {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

/* K-State Links & Logomarks */
.kstate-link {
    color: #512888; /* Official K-State Purple */
    text-decoration: none;
    font-weight: 600;
}

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

.beocat-logo {
    height: 1.25em;
    vertical-align: middle;
    margin-left: 0.25rem;
}

.latest-news {
    display: flex;
    flex-direction: column;
}

/* Latest News */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    flex: 1; /* Match the height of About Our Group exactly */
    overflow-y: auto;
    padding-right: 15px; /* Prevent scrollbar from overlapping content */
}

/* Custom Scrollbar for WebKit */
.news-list::-webkit-scrollbar {
    width: 6px;
}
.news-list::-webkit-scrollbar-track {
    background: transparent;
}
.news-list::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 10px;
}

.news-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.news-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.05);
}

.news-item:last-child {
    border-bottom: 1px solid var(--border-color);
}

.news-date {
    display: inline-block;
    font-family: var(--font-heading);
    color: #ffffff;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    background: var(--text-primary);
    border-bottom: 3px solid var(--accent-primary);
    padding: 0.2rem 0.6rem;
    border-radius: 4px 4px 0 0; /* Flat bottom for the border line to look sharp */
}

.news-item p {
    color: var(--text-secondary);
    margin: 0;
}

/* ---------- Research Section ---------- */
.research-grid {
    display: flex;
    flex-direction: column;
    gap: 6rem;
}

.research-card {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.research-card.reverse {
    flex-direction: row-reverse;
}

.research-img-wrapper {
    flex: 1;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.research-img {
    width: 100%;
    border-radius: 8px;
    transition: transform var(--transition-medium);
}
.research-card:hover .research-img { transform: scale(1.02); }

.research-text { flex: 1; }
.research-text h3 { font-size: 2rem; color: var(--text-primary); margin-bottom: 1.5rem; }

/* ---------- About Section ---------- */
.about-content {
    max-width: 900px;
    margin: 0 auto;
    background: var(--card-bg);
    padding: 3rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}
.about-footer {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-primary);
}

/* ---------- Group Section ---------- */
.group-banner-img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    display: block;
    border-radius: 20px;
    margin-bottom: 4rem;
    border: 1px solid var(--border-color);
}

.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.member-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    transition: all var(--transition-fast);
    text-align: center;
    position: relative;
    box-shadow: 0 4px 15px rgba(0,0,0,0.02);
}

.member-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.08);
    border-color: var(--accent-primary);
}

.member-role {
    color: var(--accent-primary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
}

.member-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.join-banner {
    background: var(--bg-surface-light);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    font-size: 1.1rem;
}

/* ---------- Publications Section ---------- */
.pub-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.pub-item {
    display: flex;
    align-items: center;
    gap: 2rem;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
    box-shadow: 0 4px 15px rgba(0,0,0,0.02);
    position: relative; /* For abstract tooltip */
    outline: none !important;
    -webkit-tap-highlight-color: transparent;
}

.pub-item:hover {
    border-color: var(--accent-primary);
    transform: translateX(5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
}





.pub-image-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    flex-shrink: 0;
    width: 140px;
    min-width: 140px;
}

.journal-logo {
    max-width: 100px;
    height: auto;
}

.pub-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    min-width: 50px;
    text-align: center;
}

/* ---------- Footer ---------- */
.footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 4rem 2rem;
    text-align: center;
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 1.5rem 0;
}

.social-circle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-surface-light);
    color: var(--text-primary);
    font-size: 1.2rem;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
}
.social-circle:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-3px);
}

/* Photo Placeholders & Light Mode Photos */
.light-mode-photo {
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    object-fit: cover;
    display: block;
}

.photo-placeholder {
    background-color: #f1f5f9; /* Light slate gray */
    border: 2px dashed #cbd5e1;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
    font-weight: 600;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.about-photo {
    width: 250px;
    height: 250px;
    flex-shrink: 0;
}

.about-content-flex {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.member-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
}

.pub-photo {
    width: 120px;
    height: 120px;
    flex-shrink: 0;
}

/* Utilities */
.fade-in {
    opacity: 0;
    animation: fadeInAnim 0.8s ease-out forwards;
}

.slide-up {
    opacity: 0;
    transform: translateY(30px);
    animation: slideUpAnim 0.8s ease-out forwards;
}

@keyframes fadeInAnim {
    to {
        opacity: 1;
    }
}

@keyframes slideUpAnim {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.clear-filter::before, .clear-filter::after { display: none !important; }

/* Responsive */
@media (max-width: 1024px) {
    .home-grid { grid-template-columns: 1fr; }
    .hero-title { font-size: 4rem; }
    .pub-item { flex-direction: column; align-items: flex-start; gap: 1rem; }
}

@media (max-width: 850px) {
    .nav-container { flex-direction: column; gap: 0.8rem; padding: 1rem 0 0 0; }
    .nav-logo { flex-wrap: wrap; justify-content: center; text-align: center; padding: 0 1rem; }
    .nav-logo span { white-space: normal; }
    
    .nav-menu { 
        display: flex;
        flex-direction: row;
        flex-wrap: wrap; 
        gap: 0.8rem 1rem; 
        justify-content: center; 
        align-items: center;
        width: 100%; 
        padding: 0 1rem 0.8rem 1rem;
    }
}

@media (max-width: 768px) {
    .nav-logo span { font-size: 1.1rem; }
    .nav-link { font-size: 0.95rem; }
    .external-btn { padding: 0.4rem 0.8rem; font-size: 0.95rem; gap: 4px; }
    .hero-title { font-size: 3.5rem; }
    .research-card, .research-card.reverse { flex-direction: column; gap: 2rem; }
    .about-content-flex { flex-direction: column; align-items: center; text-align: center; }
}

.pub-abstract {
    display: none;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    text-align: justify;
    width: 100%;
    animation: fadeIn 0.3s ease-in forwards;
}

.pub-item.active .pub-abstract {
    display: block;
}