/* ===================================
   CSS VARIABLES - EASY COLOR CUSTOMIZATION
   Change these values to update the entire color scheme
   =================================== */
:root {
    /* Primary Colors */
    --color-primary: #2d5f3f;      /* Green - Main brand color */
    --color-secondary: #ff9800;    /* Orange - Accent color */
    --color-accent: #ffb74d;       /* Soft Orange - Highlights */
    --color-dark: #1a3d2a;         /* Deep Green - Headings/Footer */
    --color-font: #121212;        
    
    /* Derived Colors */
    --color-primary-light: #3e7a55;
    --color-primary-dark: #1a3d2a;
    --color-secondary-light: #ffb74d;
    --color-secondary-dark: #f57c00;
    
    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-50: #fafafa;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #eeeeee;
    --color-gray-300: #e0e0e0;
    --color-gray-400: #bdbdbd;
    --color-gray-500: #9e9e9e;
    --color-gray-600: #757575;
    --color-gray-700: #616161;
    --color-gray-800: #424242;
    --color-gray-900: #212121;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Ensure anchored sections offset for sticky header */
section[id] {
    scroll-margin-top: calc(var(--header-height, 80px) + 12px);
}

/* HERO IMAGE SLIDER */
.hero-slider { background: var(--color-dark); overflow: hidden; }
.hero-slider .slider { position: relative; width: 100%; }
.hero-slider .slides { display: flex; transition: transform 0.6s ease; }
.hero-slider .slide { min-width: 100%; height: clamp(260px, 40vw, 520px); }
.hero-slider .slide img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hero-slider .slider-nav { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(0,0,0,0.45); color:#fff; border:none; width:44px; height:44px; border-radius:50%; cursor:pointer; z-index:2; }
.hero-slider .slider-nav.prev { left:16px; }
.hero-slider .slider-nav.next { right:16px; }
.hero-slider .slider-dots { position:absolute; left:50%; bottom:14px; transform: translateX(-50%); display:flex; gap:8px; z-index:2; }
.hero-slider .slider-dots button { width:10px; height:10px; border-radius:50%; border:none; background: rgba(255,255,255,0.6); cursor:pointer; }
.hero-slider .slider-dots button.active { background: var(--color-secondary); }

/* ===================================
   RESET & BASE STYLES
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===================================
   TYPOGRAPHY
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

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

/* ===================================
   BUTTONS
   =================================== */
.btn-primary,
.btn-secondary {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: 0.95rem;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

.btn-link {
    color: var(--color-primary);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    transition: gap var(--transition-base);
}

.btn-link:hover {
    gap: 0.5rem;
    color: var(--color-primary-dark);
}

/* ===================================
   HEADER
   =================================== */
.header {
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow var(--transition-base);
}

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

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    gap: var(--spacing-md);
}

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

.logo-placeholder {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    border-radius: var(--radius-md);
}

.library-name h1 {
    font-size: 1.25rem;
    font-family: var(--font-display);
    color: var(--color-font);
}

.library-name p {
    font-size: 0.75rem;
    color: var(--color-gray-600);
}

.nav-desktop {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--color-gray-700);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

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

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

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

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-dark);
    transition: all var(--transition-base);
}

.nav-mobile {
    display: none;
    flex-direction: column;
    background-color: var(--color-white);
    border-top: 1px solid var(--color-gray-200);
    padding: var(--spacing-sm) 0;
}

.nav-mobile .nav-link {
    padding: var(--spacing-sm) var(--spacing-md);
}

.nav-mobile.active {
    display: flex;
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    position: relative;
    color: var(--color-white);
    padding: var(--spacing-2xl) 0;
    overflow: hidden;
}

/* Hero background slider (behind content) */
.hero .hero-bg { position:absolute; inset:0; z-index:0; }
.hero .hero-bg .slides { display:flex; width:100%; height:100%; transition: transform 0.7s ease; }
.hero .hero-bg .slide { min-width:100%; height:100%; }
.hero .hero-bg img { width:100%; height:100%; object-fit: cover; display:block; }

/* Tint overlay to match mockup */
.hero-overlay { position:absolute; inset:0; background: linear-gradient(135deg, rgba(26,61,42,0.75), rgba(45,95,63,0.55)); z-index:1; }

/* Keep content above */
.hero .container, .hero .hero-content { position: relative; z-index: 2; }

/* Slider controls over hero */
.hero .slider-nav { position:absolute; top:50%; transform: translateY(-50%); background: rgba(0,0,0,0.4); color:#fff; border:none; width:44px; height:44px; border-radius:50%; cursor:pointer; z-index:3; }
.hero .slider-nav.prev { left:16px; }
.hero .slider-nav.next { right:16px; }
.hero .slider-dots { position:absolute; left:50%; bottom:16px; transform: translateX(-50%); display:flex; gap:8px; z-index:3; }
.hero .slider-dots button { width:10px; height:10px; border-radius:50%; border:none; background: rgba(255,255,255,0.6); }
.hero .slider-dots button.active { background: var(--color-secondary); }

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

.hero-title {
    font-family: var(--font-display);
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

/* Search Container */
.search-container {
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

.search-tabs {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    justify-content: center;
}

.search-tab {
    padding: 0.5rem 1.5rem;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    cursor: pointer;
    transition: all var(--transition-base);
    font-weight: 500;
}

.search-tab:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.search-tab.active {
    background-color: var(--color-white);
    color: var(--color-primary);
}

.search-box {
    display: flex;
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.search-input {
    flex: 1;
    padding: 1rem 1.5rem;
    border: none;
    font-size: 1rem;
    outline: none;
}

.search-btn {
    padding: 1rem 1.5rem;
    background-color: var(--color-secondary);
    color: var(--color-white);
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-base);
}

.search-btn:hover {
    background-color: var(--color-secondary-dark);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto;
}

.stat-card {
    text-align: center;
    padding: var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* ===================================
   QUICK LINKS
   =================================== */
.quick-links {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-gray-50);
}

.quick-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
}

.quick-link-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    border: 2px solid transparent;
}

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

.quick-link-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.quick-link-card h3 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    color: var(--color-font);
}

.quick-link-card p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

/* ===================================
   SECTION STYLES
   =================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--color-font);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-gray-600);
}

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

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.about-content h3 {
    color: var(--color-primary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.about-content h3:first-child {
    margin-top: 0;
}

.about-content p {
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-md);
}

.leadership {
    margin-top: var(--spacing-lg);
}

.leader-card {
    background-color: var(--color-gray-50);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    border-left: 4px solid var(--color-primary);
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.feature-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.feature-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card h4 {
    color: var(--color-font);
    margin-bottom: 0.5rem;
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

/* Hours Section */
.hours-section {
    background-color: var(--color-gray-50);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    margin-top: var(--spacing-xl);
}

.hours-section h3 {
    text-align: center;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

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

.hours-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.hours-card h4 {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
}

.hours-card p {
    margin-bottom: 0.5rem;
    color: var(--color-gray-700);
}

.hours-card .note {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    font-style: italic;
}

/* ===================================
   RESOURCES SECTION
   =================================== */
.resources-section {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-gray-50);
}

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

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

.e-resources,
.e-books-section,
.e-resources-section,
.direct-access-section,
.theses-section {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-xl);
}

.e-resources,
.e-books-section,
.e-resources-section,
.direct-access-section {
    position: relative;
}

.e-resources h3,
.e-books-section h3,
.e-resources-section h3,
.direct-access-section h3,
.theses-section h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.database-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

@media (min-width: 1200px) {
    .database-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 768px) and (max-width: 1199px) {
    .database-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 767px) {
    .database-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
}

.database-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

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

.database-card:active {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Database pagination / pager */
.database-card {
    display: none;
}

.database-card.is-visible {
    display: flex;
    flex-direction: column;
}

.database-pager {
    margin-top: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.database-page-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-gray-700);
    font-size: 0.9rem;
}

.database-page-separator {
    color: var(--color-gray-400);
}

.database-page-btn {
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-300);
    background-color: var(--color-white);
    color: var(--color-gray-800);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.database-page-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.database-page-btn:disabled {
    opacity: 0.5;
    cursor: default;
    box-shadow: none;
}

/* Side arrow buttons for database carousel */
.database-side-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--color-gray-300);
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--color-gray-800);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    z-index: 2;
}

.database-side-btn.side-prev {
    left: -20px;
}

.database-side-btn.side-next {
    right: -20px;
}

.database-side-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

@media (max-width: 768px) {
    .database-side-btn {
        display: none;
    }
    
    .database-card-content {
        padding: var(--spacing-sm);
    }
    
    .database-card h4 {
        font-size: 0.9rem;
    }
}

.database-card-content {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.database-card h4 {
    color: var(--color-font);
    margin-bottom: 0.5rem;
    font-size: 1rem;
    line-height: 1.4;
}

.database-card p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: 0;
}

.theses-section p {
    text-align: center;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-lg);
}

.theses-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.service-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border-top: 4px solid var(--color-primary);
}

.service-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.service-card h3 {
    color: var(--color-font);
    margin-bottom: var(--spacing-sm);
}

.service-card p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-sm);
}

/* Membership Info */
.membership-info {
    background-color: var(--color-gray-50);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
}

.membership-info h3 {
    text-align: center;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

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

.membership-card {
    background-color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.membership-card h4 {
    color: var(--color-font);
    margin-bottom: var(--spacing-sm);
}

.membership-card p {
    font-size: 0.875rem;
    color: var(--color-gray-700);
}

/* ===================================
   CONTACT SECTION
   =================================== */
.contact-section {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-gray-50);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

/* When only contact-info is present, span full width */
.contact-grid > .contact-info:first-child:last-child {
    grid-column: 1 / -1;
}

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

.contact-info p {
    color: var(--color-gray-700);
    margin-bottom: 0.5rem;
}

.contact-details {
    margin-top: var(--spacing-lg);
    margin-bottom: 1.75rem;
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
}

.contact-form {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-base);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background-color: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-column h4 {
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

.footer-column a {
    display: block;
    color: var(--color-gray-300);
    margin-bottom: 0.5rem;
    transition: color var(--transition-base);
}

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

.footer-column p {
    color: var(--color-gray-400);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-800);
    color: var(--color-gray-400);
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

/* Tablet */
@media (max-width: 968px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

/* Mobile */
@media (max-width: 768px) {
    .nav-desktop {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .header-actions .btn-secondary {
        display: none;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .quick-links-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .database-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .hours-grid {
        grid-template-columns: 1fr;
    }
    
    .membership-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .search-tabs {
        flex-wrap: wrap;
    }
    
    .search-tab {
        flex: 1;
        min-width: 100px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .quick-links-grid {
        grid-template-columns: 1fr;
    }
    
    .collection-stats {
        grid-template-columns: 1fr;
    }
    
    .library-name h1 {
        font-size: 1rem;
    }
    
    .library-name p {
        font-size: 0.7rem;
    }
}

/* ===================================
   ANIMATIONS
   =================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* ===================================
   UTILITY CLASSES
   =================================== */
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.bg-primary { background-color: var(--color-primary); }
.bg-secondary { background-color: var(--color-secondary); }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* ===================================
   LEADERSHIP PHOTOS
   =================================== */
.leadership-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.leader-card-photo {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-base);
}

.leader-card-photo:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.leader-photo {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--spacing-sm);
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--color-primary);
    background-color: var(--color-gray-100);
}

.leader-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.leader-info h4 {
    color: var(--color-font);
    margin-bottom: 0.25rem;
    font-size: 1.125rem;
}

.leader-title {
    color: var(--color-primary);
    font-weight: 500;
    font-size: 0.875rem;
}

/* ===================================
   DATABASE LOGOS
   =================================== */
.database-logo {
    width: 100%;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-gray-50);
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
}

.database-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* ===================================
   MEMBERSHIP DIALOGS
   =================================== */
.membership-intro {
    text-align: center;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.membership-card.clickable {
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.membership-card.clickable::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 18, 61, 0.1), transparent);
    transition: left 0.5s ease;
}

.membership-card.clickable:hover::before {
    left: 100%;
}

.membership-card.clickable:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
}

.membership-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.view-details {
    display: inline-block;
    margin-top: var(--spacing-sm);
    color: var(--color-primary);
    font-weight: 500;
    font-size: 0.875rem;
}

/* Dialog Overlay */
.dialog-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    overflow-y: auto;
    padding: var(--spacing-md);
    animation: fadeIn 0.3s ease;
}

.dialog-overlay.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.dialog-content {
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    padding: var(--spacing-xl);
    position: relative;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dialog-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    border: none;
    background-color: var(--color-gray-200);
    color: var(--color-gray-700);
    font-size: 1.5rem;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.dialog-close:hover {
    background-color: var(--color-secondary);
    color: var(--color-white);
    transform: rotate(90deg);
}

.dialog-section {
    margin-bottom: var(--spacing-lg);
}

.dialog-section h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1.75rem;
}

.dialog-section h4 {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.dialog-section ul,
.dialog-section ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.dialog-section li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.dialog-section p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.info-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
}

.info-table th,
.info-table td {
    padding: var(--spacing-sm);
    text-align: left;
    border: 1px solid var(--color-gray-300);
}

.info-table th {
    background-color: var(--color-primary);
    color: var(--color-white);
    font-weight: 600;
}

.info-table tr:nth-child(even) {
    background-color: var(--color-gray-50);
}

.highlight-box {
    background-color: var(--color-accent);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-secondary);
    margin: var(--spacing-md) 0;
    font-size: 1.125rem;
}

.note {
    font-style: italic;
    color: var(--color-gray-600);
    font-size: 0.875rem;
    padding: var(--spacing-sm);
    background-color: var(--color-gray-50);
    border-left: 3px solid var(--color-primary);
    margin-top: var(--spacing-sm);
}

/* ===================================
   THESES SUBJECT AREAS
   =================================== */
.subject-areas {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-lg);
    background-color: var(--color-gray-50);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-primary);
}

.subject-areas h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.subject-areas > p {
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-md);
}

.subject-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.subject-item {
    background-color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-300);
    font-size: 0.9rem;
    color: var(--color-gray-800);
    transition: all var(--transition-base);
    display: flex;
    align-items: center;   /* vertically centers icon + text */
    gap: 10px;
}

.subject-item img {
    display: block;
}

.subject-item:hover {
    border-color: var(--color-secondary-light);
    background-color: var(--color-secondary);
    color: var(--color-white);
    transform: translateX(4px);
}

.subject-item:hover img {
    filter: brightness(0) invert(1);
}

/* ===================================
   RESPONSIVE - DIALOG
   =================================== */
@media (max-width: 768px) {
    .dialog-content {
        padding: var(--spacing-lg);
        max-height: 95vh;
    }
    
    .dialog-section h3 {
        font-size: 1.5rem;
    }
    
    .dialog-section h4 {
        font-size: 1.125rem;
    }
    
    .info-table {
        font-size: 0.875rem;
    }
    
    .info-table th,
    .info-table td {
        padding: 0.5rem;
    }
    
    .leadership-grid {
        grid-template-columns: 1fr;
    }
    
    .subject-grid {
        grid-template-columns: 1fr;
    }





    .team-section {
    padding: 80px 0;
    background: #fbfbfb;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.team-card {
    background: #fff;
    padding: 22px 24px;
    border-radius: 12px;
    border: 1px solid #ebebeb;
    transition: 0.3s ease;
}

.team-card:hover {
    box-shadow: 0 6px 24px rgba(0,0,0,0.08);
    transform: translateY(-4px);
}

.team-role {
    color: #253A69;
    font-weight: 600;
    margin: 6px 0 8px;
}

.team-email {
    color: #43BEE2;
    font-size: 14px;
}


.stat-number {
    letter-spacing: 1px;
     display: flex; 
     gap: 4px; 
     align-items: baseline; }

}