/* ==========================================
   HU LAB WEBSITE — Nature Journal Inspired
   Premium Academic Lab Design
   ========================================== */

/* CSS Custom Properties */
:root {
    --color-primary: #c62828;
    --color-primary-dark: #8e0000;
    --color-primary-light: #ff5f52;
    --color-accent: #0d47a1;
    --color-accent-light: #5472d3;
    --color-text: #1a1a2e;
    --color-text-secondary: #4a4a6a;
    --color-text-light: #6b7280;
    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fa;
    --color-bg-dark: #0f172a;
    --color-border: #e5e7eb;
    --color-border-light: #f0f0f5;
    --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.03);
    --shadow-xl: 0 20px 50px -12px rgba(0,0,0,0.15);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img { 
    max-width: 100%; 
    height: auto; 
    display: block; 
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    image-rendering: -moz-crisp-edges;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    will-change: transform;
}

/* High DPI/Retina display optimization */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    img {
        image-rendering: auto;
        -webkit-font-smoothing: antialiased;
    }
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ==========================================
   TOP BAR
   ========================================== */
.top-bar {
    background: var(--color-bg-dark);
    color: #94a3b8;
    font-size: 0.8rem;
    padding: 8px 0;
    letter-spacing: 0.02em;
}

.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-links { display: flex; gap: 20px; }
.top-bar-links a {
    color: #94a3b8;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 6px;
}
.top-bar-links a:hover { color: #fff; }

/* ==========================================
   NAVIGATION
   ========================================== */
.main-nav {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.main-nav.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: baseline;
    gap: 4px;
    font-family: var(--font-display);
}

.logo-hu {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.logo-lab {
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--color-text-secondary);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-links a {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-primary);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -24px;
    left: 16px;
    right: 16px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 3px 3px 0 0;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

/* ==========================================
   HERO
   ========================================== */
.hero {
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, #020617 0%, #0f172a 50%, #1e293b 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('../images/hero/brain_neuron_model.jpg?v=2') center/cover no-repeat;
    opacity: 1;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(transparent, var(--color-bg));
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(2,6,23,0.4) 0%, rgba(2,6,23,0.2) 50%, rgba(2,6,23,0.6) 100%);
    z-index: 1;
}

.hero-chevron {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    font-size: 1.25rem;
    color: rgba(255,255,255,0.6);
    animation: bounceChevron 2s ease-in-out infinite;
}

@keyframes bounceChevron {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 24px;
}

.hero-tag {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-primary-light);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 16px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    color: #ffffff;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: #cbd5e1;
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.hero-scroll span {
    font-size: 0.75rem;
    color: #94a3b8;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid #475569;
    border-radius: 12px;
    position: relative;
}

.scroll-indicator::after {
    content: '';
    width: 4px;
    height: 8px;
    background: var(--color-primary-light);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50% { transform: translateX(-50%) translateY(12px); opacity: 0.3; }
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-body);
    letter-spacing: 0.02em;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(198, 40, 40, 0.3);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,0.3);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.6);
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: #fff;
    transform: translateY(-2px);
}

/* ==========================================
   SECTIONS
   ========================================== */
.section {
    padding: 70px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 12px;
    font-weight: 700;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2.4rem, 5vw, 3.6rem);
    font-weight: 900;
    color: var(--color-text);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.section-footer {
    text-align: center;
    margin-top: 28px;
}

/* ==========================================
   RESEARCH HIGHLIGHTS
   ========================================== */
.research-highlights {
    background: var(--color-bg-alt);
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.highlight-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.highlight-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.highlight-card.featured {
    grid-column: span 2;
}

.highlight-card.featured .highlight-img img {
    height: 280px;
    object-position: center;
}

.highlight-img {
    position: relative;
    overflow: hidden;
}

.highlight-img img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    object-position: center;
    transition: transform 0.6s ease;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

.highlight-card:hover .highlight-img img {
    transform: scale(1.05);
}

.highlight-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--color-primary);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.highlight-body {
    padding: 28px;
}

.highlight-category {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.highlight-body h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    margin: 10px 0;
    line-height: 1.4;
    color: var(--color-text);
}

.highlight-card.featured .highlight-body h3 {
    font-size: 1.5rem;
}

.highlight-body p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.read-more {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.read-more:hover { gap: 10px; }
.read-more i { font-size: 0.7rem; }

/* ==========================================
   STATS BAR
   ========================================== */
.stats-bar {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 900;
    color: #fff;
    display: block;
}

.stat-number::after { content: '+'; }

.stat-label {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.75);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 4px;
    display: block;
}

/* ==========================================
   PUBLICATIONS
   ========================================== */
.publications-list {
    max-width: 900px;
    margin: 0 auto;
}

.pub-item {
    display: flex;
    align-items: flex-start;
    gap: 24px;
    padding: 28px 0;
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

.pub-item:first-child { border-top: 1px solid var(--color-border); }

.pub-item:hover { padding-left: 12px; }

.pub-year {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-primary);
    font-weight: 600;
    min-width: 50px;
    padding-top: 4px;
}

.pub-content h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.5;
    color: var(--color-text);
    margin-bottom: 8px;
}

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

.pub-journal {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-top: 4px;
}

.pub-link {
    color: var(--color-text-light);
    padding-top: 4px;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.pub-link:hover { color: var(--color-primary); }

/* ==========================================
   TEAM
   ========================================== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.team-card {
    text-align: center;
    padding: 32px 20px;
    border-radius: var(--radius-lg);
    transition: var(--transition);
    border: 1px solid transparent;
}

.team-card:hover {
    background: var(--color-bg-alt);
    border-color: var(--color-border);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.team-photo {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 20px;
    border: 4px solid var(--color-border-light);
    transition: var(--transition);
}

.team-card:hover .team-photo {
    border-color: var(--color-primary);
}

.team-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 20%;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.team-card h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.team-role {
    font-size: 0.8rem;
    color: var(--color-primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.team-bio {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-top: 12px;
    line-height: 1.6;
}

/* ==========================================
   NEWS
   ========================================== */
.news-section {
    background: var(--color-bg-alt);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.news-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--color-border);
    display: flex;
    gap: 20px;
    transition: var(--transition);
}

.news-card {
    align-items: flex-start;
    min-height: 230px;
}

.news-body {
    flex: 1;
    min-width: 0;
}

.news-body h4 {
    word-break: break-word;
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.news-date {
    text-align: center;
    min-width: 60px;
    flex-shrink: 0;
}

.news-day {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 900;
    color: var(--color-primary);
    display: block;
    line-height: 1;
}

.news-month {
    font-size: 0.75rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.news-body h4 {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.4;
}

.news-body p {
    font-size: 0.88rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ==========================================
   GALLERY
   ========================================== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 220px;
    gap: 16px;
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
}

.gallery-item.large {
    grid-column: span 2;
    grid-row: span 2;
}

.gallery-item.large img {
    object-position: center;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.6s ease;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

.gallery-item:hover img { transform: scale(1.08); }

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.gallery-item:hover .gallery-overlay { opacity: 1; }

.gallery-overlay i {
    color: #fff;
    font-size: 1.5rem;
}

/* ==========================================
   CONTACT
   ========================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-info .section-tag,
.contact-info .section-title {
    text-align: left;
}

.contact-info > p {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
    line-height: 1.7;
}

.contact-details { display: flex; flex-direction: column; gap: 24px; }

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-item i {
    width: 44px;
    height: 44px;
    background: var(--color-bg-alt);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 1rem;
    flex-shrink: 0;
}

.contact-item strong {
    font-size: 0.9rem;
    display: block;
    margin-bottom: 2px;
}

.contact-item p {
    font-size: 0.88rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 18px;
    font-size: 0.9rem;
    font-family: var(--font-body);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    color: var(--color-text);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(198, 40, 40, 0.1);
}

.form-group textarea { resize: vertical; min-height: 120px; }

/* ==========================================
   FOOTER
   ========================================== */
.main-footer {
    background: var(--color-bg-dark);
    color: #94a3b8;
    padding: 80px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 60px;
    border-bottom: 1px solid #1e293b;
}

.footer-brand p {
    margin-top: 16px;
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 320px;
}

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #1e293b;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    font-size: 1rem;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--color-primary);
    color: #fff;
}

.footer-links h4 {
    color: #fff;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.footer-links a {
    display: block;
    font-size: 0.88rem;
    color: #64748b;
    padding: 6px 0;
}

.footer-links a:hover { color: #fff; padding-left: 6px; }

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 0.8rem;
    color: #475569;
}

/* ==========================================
   LIGHTBOX
   ========================================== */
.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.92);
    z-index: 10003;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.lightbox.active { display: flex; }

.lightbox img {
    max-width: 90%;
    max-height: 85vh;
    border-radius: var(--radius-md);
    object-fit: contain;
}

.lightbox-close {
    position: absolute;
    top: 24px;
    right: 32px;
    background: none;
    border: none;
    color: #fff;
    font-size: 2.5rem;
    cursor: pointer;
    line-height: 1;
    z-index: 10;
}

/* Gallery Modal (View All Photos) */
.gallery-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.98);
    z-index: 10001;
    overflow-y: auto;
    padding: 80px 40px 40px;
}

.gallery-modal.active { display: block; }

.gallery-modal-close {
    position: fixed;
    top: 24px;
    right: 32px;
    background: rgba(255,255,255,0.1);
    border: none;
    color: #fff;
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
    z-index: 10002;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
}

.gallery-modal-close:hover { background: rgba(255,255,255,0.2); }

.gallery-modal-content h2 {
    text-align: center;
    color: #fff;
    font-family: var(--font-display);
    font-size: 2rem;
    margin-bottom: 40px;
}

.gallery-modal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

.gallery-modal-grid .gallery-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 1;
}

.gallery-modal-grid .gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.gallery-modal-grid .gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-actions {
    margin-top: 28px;
}

.view-all-btn {
    text-align: center;
    margin-top: 0;
}

.view-all-btn button,
.view-all-btn a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.view-all-btn button:hover,
.view-all-btn a:hover {
    background: var(--color-primary);
    color: #fff;
}

@media (max-width: 768px) {
    .gallery-modal-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .gallery-modal {
        padding: 60px 16px 20px;
    }
    .gallery-modal-content h2 {
        font-size: 1.5rem;
        margin-bottom: 24px;
    }
}

/* ==========================================
   PAGE-SPECIFIC STYLES
   ========================================== */

/* Page Hero (for sub-pages) */
.page-hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    padding: 80px 0 60px;
    text-align: center;
}

.page-hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    color: #fff;
    margin-bottom: 12px;
}

.page-hero p {
    font-size: 1.1rem;
    color: #94a3b8;
    max-width: 600px;
    margin: 0 auto;
}


/* Publication Filters */
.filter-bar {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--color-border);
    border-radius: 24px;
    background: var(--color-bg);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-body);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* Full Publications Page */
.pub-item-full {
    display: grid;
    grid-template-columns: 60px 1fr auto;
    gap: 20px;
    align-items: start;
    padding: 28px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    margin-bottom: 16px;
    transition: var(--transition);
}

.pub-item-full:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

/* Team Page Full */
.team-section-title {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 48px 0 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-primary);
    display: inline-block;
}

.team-card-full {
    display: flex;
    gap: 32px;
    padding: 32px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    margin-bottom: 20px;
    transition: var(--transition);
}

.team-card-full:hover {
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.team-card-full .team-photo {
    width: 180px;
    height: 180px;
    margin: 0;
    flex-shrink: 0;
}

/* Larger photo for Principal Investigator */
#piSection .team-photo {
    width: 220px;
    height: 220px;
}

.team-card-full h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.team-card-full .member-links {
    display: flex;
    gap: 14px;
    margin-top: 16px;
    align-items: center;
    flex-wrap: wrap;
}

.member-email-row {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    color: var(--color-text-light);
}

.member-email-label {
    color: var(--color-text-light);
    font-weight: 500;
}

.member-email-value {
    color: var(--color-text-secondary);
    font-size: 1rem;
    text-decoration: none;
}

.member-email-value:hover {
    color: var(--color-primary);
}

.member-rg-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #00d4aa;
    color: #ffffff !important;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    transition: var(--transition);
    border: none;
}

.member-rg-icon:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 212, 170, 0.28);
    color: #ffffff !important;
}

/* Research Page */
.research-area {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    padding: 60px 0;
    border-bottom: 1px solid var(--color-border);
}

.research-area:nth-child(even) { direction: rtl; }
.research-area:nth-child(even) > * { direction: ltr; }

.research-area img {
    width: 100%;
    height: 350px;
    object-fit: cover;
    object-position: center;
    border-radius: var(--radius-lg);
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

.research-area h3 {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.research-area p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.research-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.research-tag {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 4px 12px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    color: var(--color-text-secondary);
}

/* ==========================================
   ADMIN STYLES
   ========================================== */
.admin-login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

.login-card {
    background: var(--color-bg);
    padding: 48px 40px;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-xl);
}

.login-card .nav-logo {
    justify-content: center;
    margin-bottom: 8px;
}

.login-card h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    text-align: center;
    margin-bottom: 8px;
}

.login-card .login-subtitle {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
}

.login-card .form-group {
    margin-bottom: 16px;
}

.login-card label {
    font-size: 0.85rem;
    font-weight: 600;
    display: block;
    margin-bottom: 6px;
    color: var(--color-text);
}

.login-error {
    background: #fef2f2;
    color: #dc2626;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    display: none;
    margin-bottom: 16px;
}

.login-error.show { display: block; }

/* Admin Dashboard */
.admin-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

.admin-sidebar {
    background: var(--color-bg-dark);
    padding: 24px 0;
    color: #94a3b8;
}

.admin-sidebar .nav-logo {
    padding: 0 24px;
    margin-bottom: 32px;
}

.admin-sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    font-size: 0.9rem;
    color: #94a3b8;
    transition: var(--transition);
}

.admin-sidebar-nav a:hover,
.admin-sidebar-nav a.active {
    background: rgba(255,255,255,0.05);
    color: #fff;
}

.admin-sidebar-nav a.active {
    border-right: 3px solid var(--color-primary);
}

.admin-sidebar-nav a i {
    width: 20px;
    text-align: center;
}

.admin-main {
    background: var(--color-bg-alt);
    padding: 32px;
    overflow-y: auto;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.admin-header h1 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
}

.admin-header .btn { padding: 10px 24px; font-size: 0.85rem; }

/* Admin Cards / Panels */
.admin-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--color-border);
    margin-bottom: 24px;
}

.admin-card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-border);
}

/* Admin Table */
.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th {
    text-align: left;
    padding: 12px 16px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-light);
    border-bottom: 2px solid var(--color-border);
}

.admin-table td {
    padding: 16px;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--color-border-light);
    vertical-align: top;
}

.admin-table tr:hover td { background: var(--color-bg-alt); }

#section-team .admin-table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

#section-team .admin-table th,
#section-team .admin-table td {
    box-sizing: border-box;
    vertical-align: middle;
}

#section-team .admin-table th:nth-child(1),
#section-team .admin-table td:nth-child(1) {
    width: 110px;
}

#section-team .admin-table th:nth-child(2),
#section-team .admin-table td:nth-child(2) {
    width: 190px;
}

#section-team .admin-table th:nth-child(3),
#section-team .admin-table td:nth-child(3) {
    width: 330px;
}

#section-team .admin-table th:nth-child(4),
#section-team .admin-table td:nth-child(4) {
    width: 140px;
}

#section-team .admin-table th:nth-child(5),
#section-team .admin-table td:nth-child(5) {
    width: 190px;
}

#section-team .admin-table td:last-child {
    white-space: nowrap;
}

#section-team .admin-table .table-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

#section-team .admin-table .table-actions .btn-sm {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.78rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text-secondary);
    font-family: var(--font-body);
    transition: var(--transition);
}

.btn-sm:hover { border-color: var(--color-primary); color: var(--color-primary); }

.btn-sm.danger { color: #dc2626; border-color: #fecaca; }
.btn-sm.danger:hover { background: #fef2f2; border-color: #dc2626; }

/* Admin Form Modal */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.modal-overlay.active { display: flex; }

.modal {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 28px;
    border-bottom: 1px solid var(--color-border);
}

.modal-header h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-text-light);
    cursor: pointer;
    line-height: 1;
}

.modal-body { padding: 28px; }
.modal-body .form-group { margin-bottom: 16px; }
.modal-body label {
    font-size: 0.85rem;
    font-weight: 600;
    display: block;
    margin-bottom: 6px;
}

.modal-footer {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    padding: 20px 28px;
    border-top: 1px solid var(--color-border);
}

/* Image Upload Area */
.upload-area {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.upload-area:hover {
    border-color: var(--color-primary);
    background: #fef2f2;
}

.upload-area i {
    font-size: 2rem;
    color: var(--color-text-light);
    margin-bottom: 12px;
}

.upload-area p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.upload-area input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.upload-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.upload-preview-item {
    position: relative;
    border-radius: var(--radius-sm);
    overflow: hidden;
    aspect-ratio: 1;
}

.upload-preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.upload-preview-item .remove-img {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    background: rgba(220, 38, 38, 0.9);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 0.7rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Dashboard Stats */
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.dashboard-stat {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.dashboard-stat .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.dashboard-stat .stat-icon.red { background: #fef2f2; color: var(--color-primary); }
.dashboard-stat .stat-icon.blue { background: #eff6ff; color: var(--color-accent); }
.dashboard-stat .stat-icon.green { background: #f0fdf4; color: #16a34a; }
.dashboard-stat .stat-icon.amber { background: #fffbeb; color: #d97706; }

.dashboard-stat h4 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 900;
}

.dashboard-stat p {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-top: 4px;
}

/* ==========================================
   RESPONSIVE
   ========================================== */
@media (max-width: 1024px) {
    .highlights-grid { grid-template-columns: repeat(2, 1fr); }
    .highlight-card.featured { grid-column: span 2; }
    .team-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; gap: 48px; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 180px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .research-area { grid-template-columns: 1fr; }
    .research-area:nth-child(even) { direction: ltr; }
    .dashboard-stats { grid-template-columns: repeat(2, 1fr); }
    .admin-layout { grid-template-columns: 1fr; }
    .admin-sidebar { display: none; }
}

@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-bg);
        flex-direction: column;
        padding: 16px 24px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg);
    }
    .nav-links.open { display: flex; }
    .nav-links a.active::after { display: none; }
    .hero { min-height: 70vh; }
    .hero-title { font-size: 2rem; }
    .team-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: 1fr 1fr; grid-auto-rows: 150px; }
    .gallery-item.large { grid-column: span 2; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .section { padding: 60px 0; }
    .team-card-full { flex-direction: column; text-align: center; }
    .team-card-full .team-photo { margin: 0 auto; }
    .top-bar { display: none; }
    .dashboard-stats { grid-template-columns: 1fr; }
    .highlights-grid { grid-template-columns: 1fr; }
    .highlight-card.featured { grid-column: span 1; }
    .highlight-card.featured .highlight-img img { height: 200px; }
    .page-hero { padding: 60px 0 40px; }
}