/* ============================================
   ROOT VARIABLES & GLOBAL STYLES
   ============================================ */

:root {
    --primary-color: #006994;
    --primary-dark: #004d6d;
    --primary-darker: #003d57;
    --primary-light: #00a3d9;
    --accent-color: #ff6b6b;
    --text-dark: #1a1a1a;
    --text-light: #666666;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
}

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

html {
    scroll-behavior: smooth;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Playfair Display', serif;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1 {
    font-size: 3.5rem;
    font-weight: 800;
}

h2 {
    font-size: 2.5rem;
    font-weight: 700;
}

h3 {
    font-size: 1.75rem;
    font-weight: 700;
}

h4 {
    font-size: 1.25rem;
    font-weight: 600;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
    line-height: 1.8;
}

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

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

/* ============================================
   NAVBAR & NAVIGATION
   ============================================ */
.navbar {
    background: var(--bg-white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    flex: 0 0 auto;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-image {
    width: 55px;
    height: 55px;
    object-fit: contain;
}

.logo-text h1 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--primary-color);
}

.logo-text p {
    margin: 0;
    font-size: 0.80rem;
    color: var(--text-light);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    font-weight: 500;
    color: var(--text-dark);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link.active {
    color: var(--primary-color);
    background: rgba(0, 105, 148, 0.05);
}

.nav-link:hover {
    background: rgba(0, 105, 148, 0.1);
    color: var(--primary-color);
}

.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-white);
    list-style: none;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    margin-top: var(--spacing-xs);
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    border-bottom: 1px solid var(--border-color);
}

.dropdown-menu li:last-child {
    border-bottom: none;
}

.dropdown-menu a {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-dark);
    transition: var(--transition);
}

.dropdown-menu a:hover {
    background: rgba(0, 105, 148, 0.1);
    padding-left: var(--spacing-xl);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 6px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(10px, 10px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    height: 600px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.slider-image {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}

.slider-image.active {
    opacity: 1;
}

.slider-controls {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: var(--spacing-md);
}

.slider-btn {
    background: rgba(255, 255, 255, 0.3);
    border: 2px solid white;
    color: white;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    backdrop-filter: blur(5px);
}

.slider-btn:hover {
    background: rgba(255, 255, 255, 0.5);
    transform: scale(1.1);
}

.slider-dots {
    position: absolute;
    bottom: 30px;
    right: 30px;
    display: flex;
    gap: var(--spacing-xs);
    z-index: 10;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--transition);
}

.slider-dot.active {
    background: white;
    transform: scale(1.3);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 105, 148, 0.6), rgba(0, 77, 109, 0.6));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    z-index: 5;
}

.hero-overlay h2 {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
    color: white;
}

.hero-overlay p {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.95);
}

/* ============================================
   SECTIONS
   ============================================ */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: var(--spacing-2xl) var(--spacing-lg);
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.page-header h1 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.page-header p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
}

.content-section {
    padding: var(--spacing-2xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    margin: var(--spacing-md) auto 0;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xl);
}

/* ============================================
   GRID LAYOUTS
   ============================================ */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

/* ============================================
   NEWS SECTION
   ============================================ */
.news-section {
    background: var(--bg-light);
    padding: var(--spacing-2xl) 0;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.news-card {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-left: 5px solid var(--primary-color);
}

.news-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(5px);
}

.news-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.news-date {
    display: block;
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: var(--spacing-md);
}

/* ============================================
   OVERVIEW CARDS
   ============================================ */
.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.overview-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.overview-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-10px);
}

.overview-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.overview-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   LAB CARDS
   ============================================ */
.labs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.lab-card {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.lab-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
}

.lab-image {
    width: 100%;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
}

.lab-card h3 {
    padding: var(--spacing-lg) var(--spacing-lg) 0;
    margin: 0 0 var(--spacing-md) 0;
}

.lab-card p {
    padding: 0 var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.learn-more {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-lg);
    margin: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--primary-color);
    font-weight: 600;
    transition: var(--transition);
}

.learn-more:hover {
    color: var(--primary-light);
    transform: translateX(5px);
}

/* ============================================
   QUICK LINKS
   ============================================ */
.quick-links {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-light);
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
}

.link-box {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    color: var(--text-dark);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 150px;
}

.link-box:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
    background: var(--primary-color);
    color: white;
}

.link-box i {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.link-box:hover i {
    color: white;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: linear-gradient(135deg, #1a1a1a, #2d2d2d);
    color: #aaa;
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.footer-col h4 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.footer-col p {
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-col a {
    color: #aaa;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--primary-light);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    font-size: 0.9rem;
}

.developer {
    color: var(--primary-light);
    font-weight: 600;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    text-align: center;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 105, 148, 0.3);
}

.btn-secondary {
    background: var(--border-color);
    color: var(--text-dark);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
}

/* ============================================
   TABS
   ============================================ */
.tabs-navigation {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
    border-bottom: 2px solid var(--border-color);
    flex-wrap: wrap;
}

.tab-btn {
    background: none;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

.tab-btn.active {
    color: var(--primary-color);
}

.tab-btn.active::after {
    width: 100%;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   PEOPLE SECTION
   ============================================ */
.people-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.person-card {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}

.person-card:hover,
.person-card:focus-visible {
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
    outline: none;
}

.person-card:focus-visible {
    outline: 3px solid var(--primary-light);
    outline-offset: 2px;
}

.person-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: var(--border-color);
}

.person-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: var(--transition);
}

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

.person-info {
    padding: var(--spacing-md) var(--spacing-lg);
    position: relative;
}

.person-category-badge {
    display: inline-block;
    background: rgba(0, 105, 148, 0.1);
    color: var(--primary-color);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    margin-bottom: var(--spacing-xs);
}

.person-info h3 {
    font-size: 1.15rem;
    margin: 0 0 0.2rem;
}

.person-title {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.person-contact {
    display: flex;
    gap: 0.6rem;
    margin-bottom: var(--spacing-sm);
}

.person-card-icon-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    background: rgba(0, 105, 148, 0.1);
    color: var(--primary-color);
    border-radius: 50%;
    font-size: 0.9rem;
    transition: var(--transition);
}

.person-card-icon-link:hover {
    background: var(--primary-color);
    color: white;
}

.person-view-more {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-light);
}

.person-view-more i {
    font-size: 0.75rem;
    transition: var(--transition);
}

.person-card:hover .person-view-more i {
    transform: translateX(4px);
}

/* ============================================
   PERSON PROFILE MODAL (people.html)
   ============================================ */
body.modal-open {
    overflow: hidden;
}

.person-modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    z-index: 2000;
    opacity: 0;
    transition: opacity 0.25s ease;
}

.person-modal-overlay.active {
    display: flex;
    opacity: 1;
}

.person-modal {
    background: var(--bg-white);
    border-radius: 16px;
    width: 100%;
    max-width: 680px;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-lg);
    transform: translateY(24px) scale(0.97);
    transition: transform 0.25s ease;
}

.person-modal-overlay.active .person-modal {
    transform: translateY(0) scale(1);
}

.person-modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 1;
}

.person-modal-close:hover {
    background: rgba(255, 255, 255, 0.35);
}

.person-modal-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: 16px 16px 0 0;
}

.person-modal-photo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid rgba(255, 255, 255, 0.4);
    box-shadow: var(--shadow-lg);
    flex-shrink: 0;
    background: var(--border-color);
}

.person-modal-header-text .person-category-badge {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.person-modal-name {
    color: white;
    margin: 0.4rem 0 0.2rem;
    font-size: 1.6rem;
}

.person-modal-role {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    font-weight: 500;
    margin: 0;
}

.person-modal-body {
    padding: var(--spacing-lg);
}

.person-modal-bio-title {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text-light);
    margin: 0 0 var(--spacing-sm);
}

.person-modal-bio {
    color: var(--text-dark);
    line-height: 1.7;
    margin: 0;
}

.person-modal-contact {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.person-modal-contact a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.1rem;
    background: rgba(0, 105, 148, 0.1);
    color: var(--primary-color);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.person-modal-contact a:hover {
    background: var(--primary-color);
    color: white;
}

.person-modal-no-contact {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* ============================================
   ALUMNI SECTION
   ============================================ */
.alumni-intro {
    text-align: center;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xl);
}

.alumni-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.alumni-card {
    background: linear-gradient(135deg, rgba(0, 105, 148, 0.1), rgba(0, 161, 217, 0.05));
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.alumni-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 5px 20px rgba(0, 105, 148, 0.15);
}

.alumni-cta {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--bg-light);
    border-radius: 12px;
}

/* ============================================
   FACILITY SECTION
   ============================================ */
.facility-section {
    padding: var(--spacing-2xl) 0;
}

.facility-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.facility-content.reverse {
    grid-template-columns: 1fr 1fr;
    direction: rtl;
}

.facility-content.reverse>* {
    direction: ltr;
}

.facility-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.facility-image img {
    width: 100%;
    height: auto;
    display: block;
}

.facility-list {
    list-style: none;
}

.facility-list li {
    padding: var(--spacing-md) 0;
    padding-left: var(--spacing-lg);
    position: relative;
}

.facility-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

/* SPECIAL DROPDOWN TARGET HEADINGS */
.dropdown-target-heading {
    text-align: center;
    font-weight: 800;
    font-size: 2.8rem;
    color: var(--primary-darker);
    margin-bottom: 3rem;
    position: relative;
    padding-bottom: 15px;
    font-family: 'Playfair Display', serif;
}

.dropdown-target-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 6px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 4px;
}

.facility-text h3 {
    font-size: 1.8rem;
    color: var(--primary-dark);
    margin-bottom: 1rem;
    font-family: 'Playfair Display', serif;
}

/* ============================================
   COURSES SECTION
   ============================================ */
.courses-intro {
    text-align: center;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.course-category h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
}

.course-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.course-item {
    background: var(--bg-light);
    padding: var(--spacing-lg);
    border-radius: 8px;
    transition: var(--transition);
}

.course-item:hover {
    background: rgba(0, 105, 148, 0.1);
    transform: translateX(5px);
}

.course-item h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.course-item p {
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

/* ============================================
   HISTORY SECTION
   ============================================ */
.history-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.history-text h3 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.history-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.stat-card {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: var(--spacing-lg);
    border-radius: 12px;
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    font-family: 'Playfair Display', serif;
}

.stat-label {
    font-size: 0.95rem;
    opacity: 0.95;
}

/* ============================================
   VISION & VALUES
   ============================================ */
.vision-section {
    background: var(--bg-light);
    padding: var(--spacing-2xl) 0;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.value-card {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.value-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
}

.value-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.value-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact-section {
    padding: var(--spacing-2xl) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.contact-card {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.contact-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
}

.contact-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: rgba(0, 105, 148, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary-color);
}

.contact-form-section {
    background: var(--bg-light);
    padding: var(--spacing-lg);
    border-radius: 12px;
    max-width: 600px;
    margin: var(--spacing-2xl) auto 0;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group input,
.form-group textarea {
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 105, 148, 0.1);
}

/* ============================================
   RESEARCH AREAS
   ============================================ */
.research-areas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.research-card {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.research-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
}

.research-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   PUBLICATIONS
   ============================================ */
.publications-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-light);
}

.publications-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.publication-item {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    border-left: 5px solid var(--primary-color);
    transition: var(--transition);
}

.publication-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(5px);
}

.publication-meta {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.year {
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.journal {
    background: rgba(0, 105, 148, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    color: var(--primary-color);
    font-weight: 500;
    font-size: 0.9rem;
}

.publication-item h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.publication-abstract {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.8;
}

/* ============================================
   CONFERENCES & ACHIEVEMENTS
   ============================================ */
.activities-section {
    padding: var(--spacing-2xl) 0;
}

.conference-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.conference-item {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.conference-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.conference-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.conference-header h3 {
    margin: 0;
    color: var(--primary-color);
}

.conference-date {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
}

.conference-details {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.conference-details span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ============================================
   PLACEMENTS SECTION
   ============================================ */
.placements-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-light);
}

.placement-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.stat-box {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: var(--spacing-lg);
    border-radius: 12px;
    text-align: center;
}

.stat-big {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    font-family: 'Playfair Display', serif;
}

/* ============================================
   GALLERY SECTION
   ============================================ */
.gallery-section {
    padding: var(--spacing-2xl) 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    grid-auto-rows: 280px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    min-height: 280px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.gallery-item.large {
    grid-column: span 2;
    grid-row: span 1;
}

/* Add these new lines right below */
.gallery-item.tall {
    grid-column: span 1;
    grid-row: span 2;
    /* Stretches vertically across 2 rows */
}

.gallery-item.huge {
    grid-column: span 2;
    /* Stretches wide */
    grid-row: span 2;
    /* AND stretches tall */
}

@supports (grid-auto-flow: dense) {
    .gallery-grid {
        grid-auto-flow: dense;
    }
}

.gallery-image {
    position: relative;
    height: 100%;
    overflow: hidden;
    border-radius: 12px;
    background: var(--border-color);
}

.gallery-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.gallery-item:hover .gallery-image img {
    transform: scale(1.01);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 105, 148, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.gallery-overlay i {
    font-size: 2.5rem;
    color: white;
}

.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.95);
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 10;
}

.gallery-item:hover .gallery-caption {
    transform: translateY(0);
}

.gallery-caption h3 {
    margin: 0 0 var(--spacing-xs) 0;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.gallery-caption p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-dark);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
/* ============================================
   NAV-ONLY BREAKPOINT (wider than the general mobile
   breakpoint below)
   The desktop nav bar (logo + 7 nav items + dropdowns)
   needs roughly 1200px to lay out in one row without
   overflowing. Below that - which includes tablets in
   portrait/landscape and a browser window that's simply
   been resized/minimized on a desktop - it switches to
   the same hamburger menu as mobile, rather than letting
   nav items get cut off or overlap. Everything else on
   the page (typography, grids, etc.) still switches to
   its mobile layout at the narrower 768px breakpoint
   below, since those don't have this overflow problem.
   ============================================ */
@media (max-width: 1200px) {
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-white);
        flex-direction: column;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        max-height: 500px;
        overflow-y: auto;
        box-shadow: var(--shadow);
    }

    .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-link {
        padding: var(--spacing-md);
        display: block;
    }

    .dropdown-menu {
        position: static;
        opacity: 0;
        visibility: hidden;
        transform: translateX(-20px);
        max-height: 0;
        overflow: hidden;
        box-shadow: none;
        background: var(--bg-light);
    }

    .nav-item.active .dropdown-menu {
        opacity: 1;
        visibility: visible;
        transform: translateX(0);
        max-height: 300px;
    }

    .hamburger {
        display: flex;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    h3 {
        font-size: 1.4rem;
    }

    .hero {
        height: 400px;
    }

    .hero-overlay h2 {
        font-size: 1.8rem;
    }

    .hero-overlay p {
        font-size: 1rem;
    }

    .history-content {
        grid-template-columns: 1fr;
    }

    .facility-content {
        grid-template-columns: 1fr;
    }

    .facility-content.reverse {
        direction: ltr;
    }

    .facility-content.reverse>* {
        direction: ltr;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
        grid-auto-rows: auto;
    }

    .gallery-item.large {
        grid-column: span 1;
    }

    .gallery-item {
        min-height: 200px;
    }

    .conference-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .tabs-navigation {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }

    .tab-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }

    .contact-form-section {
        max-width: 100%;
    }

    .person-modal-header {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-xl) var(--spacing-md) var(--spacing-md);
    }

    .person-modal-photo {
        width: 100px;
        height: 100px;
    }

    .person-modal-body {
        padding: var(--spacing-md);
    }

    .person-modal-contact {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.4rem;
    }

    h3 {
        font-size: 1.15rem;
    }

    .hero {
        height: 300px;
    }

    .hero-overlay h2 {
        font-size: 1.4rem;
    }

    .slider-controls {
        display: none;
    }

    .logo-section {
        gap: var(--spacing-sm);
    }

    /* Without this, the logo text never shrinks below its full natural
       width (it inherits flex: 0 0 auto from .nav-logo), which pushes the
       hamburger button partially or fully off-screen on narrow phones
       (~360px and below). Letting it shrink + truncating with an ellipsis
       keeps the hamburger reachable at every width. */
    .nav-logo {
        flex: 1 1 auto;
        min-width: 0;
    }

    .logo-text {
        min-width: 0;
        overflow: hidden;
    }

    .logo-text h1,
    .logo-text p {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .hamburger {
        flex-shrink: 0;
    }

    .logo-text h1 {
        font-size: 1rem;
    }

    .logo-text p {
        font-size: 0.75rem;
    }

    .news-grid,
    .labs-grid,
    .people-grid,
    .research-areas-grid,
    .values-grid,
    .overview-grid,
    .contact-grid,
    .placement-stats,
    .collaboration-grid,
    .alumni-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }

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

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

    .conference-details {
        flex-direction: column;
    }

    .publication-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

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

    .facility-content {
        gap: var(--spacing-lg);
    }

    .btn {
        width: 100%;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.section-title {
    animation: slideInDown 0.6s ease-out;
}

.card {
    animation: fadeInScale 0.5s ease-out;
}