:root {
    --primary-dark: #0A1D56;
    --primary: #1450A3;
    --primary-light: #337CCF;
    --primary-lighter: #4A96FC;
    --accent: #FFC436;
    --accent-light: #FFD966;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    --white: #ffffff;
    --font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    --transition-fast: all 0.2s ease;
    --transition-normal: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    --font-size: 16px;
}

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-100);
    transition: var(--transition-normal);
    font-size: var(--font-size);
    overflow-x: hidden;
}

/* Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--white);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader {
    width: 60px;
    height: 60px;
    border: 5px solid var(--gray-200);
    border-top: 5px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}


.accessibility-panel {
    position: fixed;
    top: 95px;
    right: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: var(--transition-normal);
}

.accessibility-btn {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    border: none;
    background-color: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition-fast);
}

.accessibility-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.accessibility-btn.close-btn {
    background-color: #28a745;
}

.accessibility-btn.toggle-btn {
    background-color: var(--primary);
    z-index: 1001;
}

.accessibility-panel .accessibility-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: transform 0.3s ease, opacity 0.3s ease;
    transform: translateY(-20px);
    opacity: 0;
    pointer-events: none;
}

.accessibility-panel.open .accessibility-options {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

/* Navigation */
.navbar {
    background-color: var(--primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: rgba(20, 80, 163, 0.95);
    backdrop-filter: blur(10px);
}

.logo {
    display: flex;
    align-items: center;
    transition: var(--transition-normal);
}

.logo:hover {
    transform: scale(1.02);
}

.logo img {
    height: 50px;
    margin-right: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.logo:hover img {
    box-shadow: var(--shadow-md);
}

.logo-text {
    color: var(--white);
    font-size: 1.2rem;
    font-weight: bold;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.main-nav {
    display: flex;
    gap: var(--spacing-sm);
}

.main-nav a {
    color: var(--white);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: 500;
    transition: var(--transition-normal);
    position: relative;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    z-index: 1;
}

.main-nav a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s ease;
    z-index: -1;
}

.main-nav a:hover {
    color: var(--white);
    background-color: rgba(255, 255, 255, 0.1);
}

.main-nav a:hover::before {
    transform: scaleX(1);
    transform-origin: left;
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: 200;
}

.hamburger span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: var(--white);
    border-radius: 3px;
    transition: var(--transition-normal);
}

/* Banner */
.banner {
    height: 400px;
    background-image: linear-gradient(to right, rgba(10, 29, 86, 0.8), rgba(20, 80, 163, 0.8)), url('/api/placeholder/1600/900');
    background-size: cover;
    background-position: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
    padding: 0 var(--spacing-md);
    text-align: center;
}

.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
    z-index: 1;
}

.banner h1 {
    position: relative;
    z-index: 2;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transform: translateY(-20px);
    animation: fadeInDown 0.8s ease forwards;
}

.banner p {
    position: relative;
    z-index: 2;
    font-size: 1.2rem;
    max-width: 700px;
    margin-bottom: var(--spacing-xl);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards 0.3s;
}

.search-container {
    position: relative;
    width: 100%;
    max-width: 600px;
    z-index: 2;
    opacity: 0;
    transform: scale(0.95);
    animation: fadeInScale 0.6s ease forwards 0.6s;
}

.search-container input {
    width: 100%;
    padding: 15px 20px;
    padding-left: 50px;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
    background-color: rgba(255, 255, 255, 0.9);
}

.search-container input:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--accent), var(--shadow-lg);
    background-color: var(--white);
}

.search-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-600);
    font-size: 1.1rem;
    transition: var(--transition-normal);
}

.search-container input:focus~.search-icon {
    color: var(--primary);
}

.search-btn {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 30px;
    padding: 10px 20px;
    cursor: pointer;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 6px;
}

.search-btn:hover {
    background-color: var(--primary-light);
    transform: translateY(-50%) scale(1.03);
    box-shadow: var(--shadow-md);
}

.search-btn:active {
    transform: translateY(-50%) scale(0.98);
}

/* Resources Grid */
.resources {
    padding: var(--spacing-xxl) 0;
    position: relative;
    margin-top: -50px;
    z-index: 10;
}

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

.resource-card {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.resource-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(to right, var(--primary-light), var(--primary-lighter));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

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

.resource-card:hover::before {
    transform: scaleX(1);
}

.resource-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
    transition: var(--transition-normal);
}

.resource-card:hover .resource-icon {
    transform: scale(1.1);
    color: var(--primary-light);
}

.resource-title {
    font-weight: bold;
    margin-bottom: 5px;
    color: var(--primary);
    font-size: 1.1rem;
    transition: var(--transition-normal);
}

.resource-card:hover .resource-title {
    color: var(--primary-dark);
}

.resource-subtitle {
    font-size: 0.9rem;
    color: var(--gray-600);
    transition: var(--transition-normal);
}

.resource-card:hover .resource-subtitle {
    color: var(--gray-700);
}

/* Recent Submissions */
.recent-submissions {
    padding: var(--spacing-xxl) 0;
    background-color: var(--white);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.section-title {
    font-size: 1.8rem;
    color: var(--primary-dark);
    font-weight: bold;
    position: relative;
    padding-bottom: var(--spacing-sm);
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, var(--primary), var(--primary-light));
    border-radius: var(--border-radius-sm);
}

.filter-options {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.filter-btn {
    background-color: var(--white);
    border: 2px solid var(--primary-light);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 5px;
}

.filter-btn:hover {
    background-color: var(--primary-light);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
}

.filter-btn:active {
    transform: translateY(0);
}

.submission-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.submission-card {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    border: 1px solid var(--gray-200);
    opacity: 0;
    transform: translateX(-20px);
    animation: fadeInLeft 0.6s ease forwards;
}

.submission-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
    border-color: var(--primary-lighter);
}

.submission-type {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 80px;
}

.submission-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: var(--white);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.submission-card:hover .submission-icon {
    transform: scale(1.1) rotate(10deg);
    box-shadow: var(--shadow-md);
}

.submission-availability {
    font-size: 0.8rem;
    color: var(--gray-600);
    text-align: center;
    display: flex;
    align-items: center;
    gap: 4px;
}

.submission-availability i {
    color: #28a745;
}

.submission-details {
    flex: 1;
}

.submission-title {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
    transition: var(--transition-normal);
}

.submission-title a {
    color: inherit;
    text-decoration: none;
    background: linear-gradient(to right, var(--primary-dark), var(--primary-dark));
    background-size: 0% 1px;
    background-position: 0 100%;
    background-repeat: no-repeat;
    transition: var(--transition-normal);
}

.submission-title a:hover {
    color: var(--primary);
    background-size: 100% 1px;
}

.submission-metadata {
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-sm);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.submission-metadata span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.submission-metadata i {
    color: var(--primary-light);
}

.submission-abstract {
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
    color: var(--gray-700);
}

.submission-actions {
    margin-top: var(--spacing-md);
}

.view-more {
    color: var(--primary);
    font-size: 0.95rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition-normal);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
}

.view-more:hover {
    color: var(--primary-light);
    background-color: var(--gray-100);
    transform: translateX(5px);
}

/* Stats Section */
.stats-section {
    background: linear-gradient(to right, var(--primary-dark), var(--primary));
    padding: var(--spacing-xxl) 0;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('/api/placeholder/500/500');
    background-size: cover;
    opacity: 0.05;
    mix-blend-mode: overlay;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
    position: relative;
    z-index: 2;
}

.stat-card {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-xl);
    text-align: center;
    transition: var(--transition-normal);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.stat-card:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
    transition: var(--transition-normal);
}

.stat-card:hover .stat-icon {
    transform: scale(1.1);
    opacity: 1;
}

.stat-number {
    font-size: 2.2rem;
    font-weight: bold;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--white), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: var(--transition-normal);
}

.stat-card:hover .stat-number {
    transform: scale(1.05);
}

.stat-title {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Footer */
.footer {
    background-color: var(--primary-dark);
    color: var(--white);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
    opacity: 0.1;
    border-radius: 50%;
    transform: translate(30%, -30%);
}

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

.footer-column h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--accent);
    display: inline-block;
    position: relative;
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: var(--gray-300);
    text-decoration: none;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: var(--spacing-xs) 0;
}

.footer-links a:hover {
    color: var(--white);
    transform: translateX(5px);
}

.footer-links a i {
    color: var(--accent);
    font-size: 0.9rem;
}

.contact-info {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: var(--spacing-md);
    color: var(--gray-300);
}

.contact-info i {
    color: var(--accent);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: var(--gray-400);
    position: relative;
    z-index: 1;
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.footer-logo img {
    height: 45px;
    margin-right: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
}

.footer-logo-text {
    color: var(--white);
    font-weight: bold;
    font-size: 1.1rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

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

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

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

@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.animate-fade-down {
    opacity: 0;
    transform: translateY(-30px);
    animation: fadeInDown 0.6s ease forwards;
}

.animate-fade-left {
    opacity: 0;
    transform: translateX(-30px);
    animation: fadeInLeft 0.6s ease forwards;
}

.animate-fade-right {
    opacity: 0;
    transform: translateX(30px);
    animation: fadeInRight 0.6s ease forwards;
}

.animate-scale {
    opacity: 0;
    transform: scale(0.9);
    animation: fadeInScale 0.6s ease forwards;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

/* Staggered animations */
.resources-grid .resource-card:nth-child(1) {
    animation-delay: 0.1s;
}

.resources-grid .resource-card:nth-child(2) {
    animation-delay: 0.2s;
}

.resources-grid .resource-card:nth-child(3) {
    animation-delay: 0.3s;
}

.resources-grid .resource-card:nth-child(4) {
    animation-delay: 0.4s;
}

.resources-grid .resource-card:nth-child(5) {
    animation-delay: 0.5s;
}

.resources-grid .resource-card:nth-child(6) {
    animation-delay: 0.6s;
}

.submission-list .submission-card:nth-child(1) {
    animation-delay: 0.1s;
}

.submission-list .submission-card:nth-child(2) {
    animation-delay: 0.2s;
}

.submission-list .submission-card:nth-child(3) {
    animation-delay: 0.3s;
}

.stats-container .stat-card:nth-child(1) {
    animation-delay: 0.1s;
}

.stats-container .stat-card:nth-child(2) {
    animation-delay: 0.2s;
}

.stats-container .stat-card:nth-child(3) {
    animation-delay: 0.3s;
}

.stats-container .stat-card:nth-child(4) {
    animation-delay: 0.4s;
}

/* High Contrast Mode */
.high-contrast {
    --primary-dark: #000000;
    --primary: #000000;
    --primary-light: #000000;
    --primary-lighter: #333333;
    --accent: #ffff00;
    --accent-light: #ffff00;
    --gray-100: #000000;
    --gray-200: #000000;
    --gray-300: #ffffff;
    --gray-400: #ffffff;
    --gray-500: #ffffff;
    --gray-600: #ffffff;
    --gray-700: #ffffff;
    --gray-800: #ffffff;
    --gray-900: #ffffff;
    --white: #000000;
    color: #ffffff;
}

.high-contrast .navbar,
.high-contrast .banner,
.high-contrast .stats-section,
.high-contrast .footer {
    background: #000000;
}

.high-contrast .submission-card,
.high-contrast .resource-card,
.high-contrast .stat-card,
.high-contrast input,
.high-contrast select,
.high-contrast button {
    background-color: #000000;
    color: #ffffff;
    border: 2px solid #ffffff;
}

.high-contrast a,
.high-contrast .submission-title,
.high-contrast .resource-title,
.high-contrast .section-title {
    color: #ffff00;
}

.high-contrast .footer-links a {
    color: #ffffff;
}

.high-contrast .search-icon {
    color: #ffffff;
}

.high-contrast .submission-icon,
.high-contrast .stat-icon {
    background: #000000;
    border: 2px solid #ffffff;
}

/* Responsive Styles */
@media (max-width: 992px) {
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .footer-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --font-size: 15px;
    }

    .navbar {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--primary-dark);
        flex-direction: column;
        padding: 80px var(--spacing-md) var(--spacing-md);
        transition: var(--transition-normal);
        z-index: 100;
        box-shadow: var(--shadow-lg);
    }

    .main-nav.active {
        right: 0;
    }

    .main-nav a {
        padding: var(--spacing-md);
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }

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

    .hamburger.active span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    .banner {
        height: 350px;
    }

    .banner h1 {
        font-size: 2rem;
    }

    .banner p {
        font-size: 1rem;
    }

    .resources-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: var(--spacing-md);
    }

    .filter-options {
        width: 100%;
        justify-content: space-between;
    }

    .filter-btn {
        flex: 1;
        justify-content: center;
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.8rem;
    }

    .submission-card {
        flex-direction: column;
    }

    .submission-type {
        flex-direction: row;
        width: 100%;
        justify-content: flex-start;
        gap: var(--spacing-md);
        margin-bottom: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    :root {
        --font-size: 14px;
    }

    .banner h1 {
        font-size: 1.8rem;
    }

    .search-container input {
        padding: 12px 15px 12px 40px;
        font-size: 0.9rem;
    }

    .search-btn {
        padding: 8px 12px;
        font-size: 0.8rem;
    }

    .search-icon {
        left: 15px;
    }

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

    .filter-options {
        flex-direction: column;
        width: 100%;
    }

    .filter-btn {
        width: 100%;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .submission-metadata {
        flex-direction: column;
    }

    .stat-card {
        padding: var(--spacing-md);
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .stat-title {
        font-size: 1rem;
    }
}

.partners-section {
    padding: var(--spacing-xxl) 0;
    background-color: var(--white);
    position: relative;
}

.partners-carousel {
    position: relative;
    padding: var(--spacing-lg) var(--spacing-xxl);
    background: linear-gradient(to right, rgba(255, 255, 255, 0.8), rgba(240, 240, 240, 0.8), rgba(255, 255, 255, 0.8));
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.partners-carousel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('/api/placeholder/500/500');
    background-size: cover;
    opacity: 0.03;
    mix-blend-mode: overlay;
    z-index: -1;
}

.carousel-container {
    position: relative;
    overflow: hidden;
    margin: 0 auto;
}

.carousel-track {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.carousel-slide {
    flex: 0 0 calc(20% - 20px);
    margin: 0 10px;
    opacity: 0.6;
    transform: scale(0.9);
    transition: var(--transition-normal);
    text-align: center;
}

.carousel-slide.active {
    opacity: 1;
    transform: scale(1);
}

.partner-logo {
    width: 100%;
    max-width: 150px;
    height: auto;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    padding: 10px;
    background-color: var(--white);
    transition: var(--transition-normal);
    border: 1px solid var(--gray-200);
}

.carousel-slide:hover .partner-logo {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-lighter);
}

.partner-name {
    margin-top: 15px;
    font-weight: 500;
    color: var(--primary-dark);
    font-size: 0.9rem;
}

.carousel-nav {
    position: absolute;
    top: 50%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    transform: translateY(-50%);
    z-index: 2;
    padding: 0 10px;
}

.carousel-btn {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    border: none;
    background-color: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    opacity: 0.7;
}

.carousel-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
    opacity: 1;
    background-color: var(--primary-light);
}

.carousel-indicators {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-md);
    gap: 8px;
}

.indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--gray-300);
    cursor: pointer;
    transition: var(--transition-normal);
}

.indicator.active {
    background-color: var(--primary);
    transform: scale(1.2);
}


@media (max-width: 992px) {
    .carousel-slide {
        flex: 0 0 calc(25% - 20px);
    }
}

@media (max-width: 768px) {
    .carousel-slide {
        flex: 0 0 calc(33.333% - 20px);
    }

    .partners-carousel {
        padding: var(--spacing-md) var(--spacing-lg);
    }
}

@media (max-width: 576px) {
    .carousel-slide {
        flex: 0 0 calc(50% - 20px);
    }

    .carousel-btn {
        width: 35px;
        height: 35px;
        font-size: 0.9rem;
    }
}


.image-preview-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.image-preview-modal.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    position: relative;
    max-width: 80%;
    max-height: 80%;
    margin: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.modal-image-container {
    position: relative;
    width: 100%;
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.modal-image {
    display: block;
    max-width: 100%;
    max-height: 70vh;
    margin: 0 auto;
}

.modal-info {
    background-color: var(--white);
    width: 100%;
    padding: var(--spacing-lg);
    border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
    color: var(--primary-dark);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: var(--spacing-xs);
}

.modal-description {
    font-size: 1rem;
    color: var(--gray-700);
    margin-bottom: var(--spacing-md);
}

.modal-link {
    display: inline-block;
    color: var(--primary);
    text-decoration: none;
    margin-top: var(--spacing-sm);
    font-weight: 500;
    transition: var(--transition-normal);
}

.modal-link:hover {
    color: var(--primary-light);
    text-decoration: underline;
}

.modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    width: 36px;
    height: 36px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--primary-dark);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    z-index: 10;
}

.modal-close:hover {
    transform: rotate(90deg);
    background: var(--accent);
}

.modal-nav {
    position: absolute;
    width: 100%;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 var(--spacing-md);
    box-sizing: border-box;
    z-index: 5;
    pointer-events: none;
}

.modal-nav-btn {
    width: 50px;
    height: 50px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--primary-dark);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    pointer-events: auto;
}

.modal-nav-btn:hover {
    background: var(--accent);
    transform: scale(1.1);
}

.modal-counter {
    position: absolute;
    bottom: -40px;
    left: 0;
    right: 0;
    text-align: center;
    color: var(--white);
    font-size: 0.9rem;
}

/* Modificaciones para las diapositivas del carrusel */
.carousel-slide {
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.view-details {
    position: absolute;
    bottom: -40px;
    left: 0;
    right: 0;
    background: rgba(20, 80, 163, 0.8);
    color: white;
    padding: 8px;
    text-align: center;
    font-size: 0.8rem;
    transition: bottom 0.3s ease;
}

.carousel-slide:hover .view-details {
    bottom: 0;
}

@media (max-width: 768px) {
    .modal-content {
        max-width: 95%;
    }

    .modal-nav-btn {
        width: 40px;
        height: 40px;
    }

    .modal-title {
        font-size: 1.2rem;
    }
}

.biblioteca-section {
    padding: var(--spacing-xxl) 0;
    background-color: var(--white);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.section-title {
    font-size: 1.8rem;
    color: var(--primary-dark);
    font-weight: bold;
    position: relative;
    padding-bottom: var(--spacing-sm);
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, var(--primary), var(--primary-light));
    border-radius: var(--border-radius-sm);
}

/* Contenedor de filtros activos */
.active-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    transition: all 0.3s ease;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
}

.active-filters.show {
    max-height: 100px;
    opacity: 1;
    margin-bottom: var(--spacing-lg);
}

.filter-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background-color: var(--primary-lighter);
    color: var(--white);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
}

.filter-tag:hover {
    background-color: var(--primary);
    transform: translateY(-2px);
}

.filter-tag i.remove {
    font-size: 0.75rem;
    background-color: rgba(255, 255, 255, 0.3);
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.filter-tag:hover i.remove {
    background-color: rgba(255, 255, 255, 0.5);
}

/* Buscador avanzado */
.biblioteca-search {
    position: relative;
    margin-bottom: var(--spacing-xl);
    display: flex;
    gap: var(--spacing-md);
}

.biblioteca-search .search-container {
    flex: 1;
    position: relative;
}

.search-container input {
    width: 100%;
    padding: 14px 20px;
    padding-left: 50px;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    background-color: var(--white);
    border: 1px solid var(--gray-200);
}

.search-container input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 124, 207, 0.2), var(--shadow-md);
    border-color: var(--primary-light);
}

.search-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-600);
    font-size: 1.1rem;
    transition: var(--transition-normal);
    pointer-events: none;
}

.search-container input:focus~.search-icon {
    color: var(--primary);
}

.search-btn {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 30px;
    padding: 10px 20px;
    cursor: pointer;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 6px;
}

.search-btn:hover {
    background-color: var(--primary-light);
    transform: translateY(-50%) scale(1.03);
    box-shadow: var(--shadow-md);
}

.search-btn:active {
    transform: translateY(-50%) scale(0.98);
}

.advanced-search-toggle {
    background-color: var(--white);
    border: 2px solid var(--primary-light);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    height: 50px;
    flex-shrink: 0;
}

.advanced-search-toggle:hover {
    background-color: var(--primary-light);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.filter-options {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.filter-btn {
    background-color: var(--white);
    border: 2px solid var(--primary-light);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 5px;
}

.filter-btn:hover {
    background-color: var(--primary-light);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
}

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

.filter-btn:active {
    transform: translateY(0);
}

.filter-btn.filter-btn-reset {
    background-color: var(--gray-200);
    color: var(--gray-700);
    border-color: var(--gray-300);
}

.filter-btn.filter-btn-reset:hover {
    background-color: var(--gray-300);
}

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

.filter-btn.filter-btn-apply:hover {
    background-color: var(--primary-dark);
}

/* Panel de búsqueda avanzada */
.advanced-search-panel {
    background-color: var(--gray-100);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.5s ease, opacity 0.3s ease, padding 0.5s ease, margin 0.5s ease;
    padding-top: 0;
    padding-bottom: 0;
    margin-bottom: 0;
}

.advanced-search-panel.active {
    max-height: 600px;
    /* Valor alto para acomodar el contenido */
    opacity: 1;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

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

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--primary-dark);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px var(--spacing-md);
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-sm);
    font-size: 0.95rem;
    transition: var(--transition-normal);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 2px rgba(52, 124, 207, 0.2);
}

.advanced-search-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

/* Dropdown para filtros */
.filter-dropdown {
    position: absolute;
    top: calc(100% + 5px);
    right: 0;
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    width: 280px;
    z-index: 10;
    display: none;
    animation: fadeInDown 0.3s ease;
}

.filter-dropdown.active {
    display: block;
}

.filter-dropdown-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--gray-200);
    font-weight: bold;
    color: var(--primary-dark);
}

.filter-dropdown-options {
    max-height: 300px;
    overflow-y: auto;
}

.filter-option {
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-option:hover {
    background-color: var(--gray-100);
}

.filter-option.active {
    background-color: rgba(52, 124, 207, 0.1);
    color: var(--primary);
    font-weight: 500;
}

.filter-option-checkbox {
    width: 18px;
    height: 18px;
    border: 2px solid var(--gray-400);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.filter-option.active .filter-option-checkbox {
    border-color: var(--primary);
    background-color: var(--primary);
    color: var(--white);
}

.filter-dropdown-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
}

/* Recursos Grid */
.biblioteca-results {
    position: relative;
    min-height: 300px;
}

.results-loading {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 5;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.results-loading.active {
    opacity: 1;
    visibility: visible;
}

.loader {
    width: 48px;
    height: 48px;
    border: 5px solid var(--primary-lighter);
    border-bottom-color: var(--primary);
    border-radius: 50%;
    display: inline-block;
    box-sizing: border-box;
    animation: rotation 1s linear infinite;
}

@keyframes rotation {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--gray-200);
}

.results-count {
    font-size: 1rem;
    color: var(--gray-700);
}

.results-count span {
    font-weight: 700;
    color: var(--primary);
}

.results-view-options {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.view-option {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-sm);
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition-normal);
}

.view-option:hover {
    background-color: var(--gray-100);
}

.view-option.active {
    background-color: var(--primary-light);
    color: var(--white);
    border-color: var(--primary-light);
}

.sort-select {
    padding: 8px var(--spacing-md);
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-sm);
    background-color: var(--white);
    color: var(--gray-700);
    font-size: 0.9rem;
    cursor: pointer;
}

.recursos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.recursos-grid.loaded {
    opacity: 1;
    transform: translateY(0);
}

.recursos-grid.hidden {
    display: none;
}

.recurso-card {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
    border: 1px solid var(--gray-200);
}

.recurso-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-lighter);
}

.recurso-availability {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 2;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.disponible {
    background-color: rgba(40, 167, 69, 0.1);
    color: var(--success);
}

.prestado {
    background-color: rgba(255, 193, 7, 0.1);
    color: var(--warning);
}

.recurso-type {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    z-index: 2;
}

.recurso-cover {
    position: relative;
    height: 200px;
    overflow: hidden;
    background-color: var(--gray-100);
}

.recurso-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

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

.recurso-details {
    padding: var(--spacing-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.recurso-title {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
    color: var(--primary-dark);
    font-weight: 600;
}

.recurso-author {
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-sm);
}

.recurso-info {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-size: 0.85rem;
    color: var(--gray-600);
}

.recurso-info span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.recurso-info i {
    color: var(--primary-light);
}

.recurso-actions {
    margin-top: auto;
    display: flex;
    gap: var(--spacing-xs);
}

.recurso-btn {
    flex: 1;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.recurso-preview {
    background-color: var(--gray-200);
    color: var(--gray-700);
}

.recurso-preview:hover {
    background-color: var(--gray-300);
}

.recurso-download {
    background-color: var(--primary-light);
    color: var(--white);
}

.recurso-download:hover {
    background-color: var(--primary);
}

.recurso-reserve {
    background-color: var(--accent);
    color: var(--white);
}

.recurso-reserve:hover {
    background-color: var(--accent-light);
}

/* Vista en lista */
.recursos-lista {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.recursos-lista.loaded {
    opacity: 1;
    transform: translateY(0);
}

.recursos-lista.hidden {
    display: none;
}

.recurso-list-item {
    display: flex;
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition-normal);
    padding: var(--spacing-md);
    gap: var(--spacing-md);
    position: relative;
    border: 1px solid var(--gray-200);
}

.recurso-list-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-lighter);
}

.recurso-list-left {
    flex: 0 0 100px;
    position: relative;
}

.recurso-mini-cover {
    height: 140px;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    background-color: var(--gray-100);
}

.recurso-mini-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.recurso-list-item:hover .recurso-mini-cover img {
    transform: scale(1.05);
}

.recurso-type-list {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    z-index: 2;
}

.recurso-list-content {
    flex: 1;
    padding-right: var(--spacing-md);
}

.recurso-list-right {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: flex-end;
    flex: 0 0 auto;
    padding-left: var(--spacing-md);
    border-left: 1px solid var(--gray-200);
}

.recurso-actions-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    width: 150px;
}

/* No results */
.no-results {
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-md);
    display: none;
}

.no-results.show {
    display: block;
}

.no-results-icon {
    font-size: 3rem;
    color: var(--gray-400);
    margin-bottom: var(--spacing-md);
}

.no-results-title {
    font-size: 1.5rem;
    color: var(--gray-700);
    margin-bottom: var(--spacing-sm);
}

.no-results-message {
    color: var(--gray-600);
    max-width: 500px;
    margin: 0 auto;
    margin-bottom: var(--spacing-lg);
}

/* Paginación */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
}

.pagination-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-sm);
    background-color: var(--white);
    color: var(--gray-700);
    cursor: pointer;
    transition: var(--transition-normal);
}

.pagination-btn:hover:not([disabled]) {
    background-color: var(--primary-light);
    color: var(--white);
    border-color: var(--primary-light);
}

.pagination-btn[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-numbers {
    display: flex;
    align-items: center;
    gap: 5px;
}

.pagination-number {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-sm);
    background-color: var(--white);
    color: var(--gray-700);
    cursor: pointer;
    transition: var(--transition-normal);
}

.pagination-number:hover {
    background-color: var(--gray-100);
}

.pagination-number.active {
    background-color: var(--primary-light);
    color: var(--white);
    border-color: var(--primary-light);
}

.pagination-ellipsis {
    color: var(--gray-600);
}

/* Modal de vista previa */
.recurso-preview-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.recurso-preview-modal.active {
    opacity: 1;
    visibility: visible;
}

.recurso-preview-modal .modal-content {
    background-color: var(--white);
    width: 90%;
    max-width: 1000px;
    max-height: 90vh;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.recurso-preview-modal.active .modal-content {
    opacity: 1;
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--white);
    color: var(--primary-dark);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    z-index: 10;
}

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

.preview-layout {
    display: flex;
    height: 90vh;
    max-height: 700px;
}

.preview-sidebar {
    width: 300px;
    padding: var(--spacing-lg);
    background-color: var(--gray-100);
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.preview-cover {
    margin-bottom: var(--spacing-md);
}

.preview-cover img {
    width: 100%;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
}

.preview-info {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.preview-availability {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-weight: 500;
    text-align: center;
}

.preview-availability.disponible {
    background-color: rgba(40, 167, 69, 0.1);
    color: var(--success);
}

.preview-availability.prestado {
    background-color: rgba(255, 193, 7, 0.1);
    color: var(--warning);
}

.preview-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.preview-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

.preview-download:hover {
    background-color: var(--primary-light);
    transform: translateY(-2px);
}

.preview-reserve {
    background-color: var(--accent);
    color: var(--white);
}

.preview-reserve:hover {
    background-color: var(--accent-light);
    transform: translateY(-2px);
}

.preview-cite,
.preview-share {
    background-color: var(--white);
    color: var(--primary-dark);
    border: 1px solid var(--gray-300);
}

.preview-cite:hover,
.preview-share:hover {
    background-color: var(--gray-100);
    transform: translateY(-2px);
}

.preview-main {
    flex: 1;
    padding: var(--spacing-xl);
    overflow-y: auto;
}

.preview-title {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-dark);
}

.preview-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md) var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--gray-200);
}

.meta-label {
    font-weight: 600;
    color: var(--gray-700);
    display: block;
    margin-bottom: 2px;
}

.meta-value {
    color: var(--text);
}

.preview-abstract,
.preview-content {
    margin-bottom: var(--spacing-lg);
}

.preview-abstract h3,
.preview-content h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-dark);
}

.preview-abstract p {
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.preview-toc {
    list-style-type: none;
}

.preview-toc li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--gray-200);
}

.preview-toc li:last-child {
    border-bottom: none;
}

/* Toast de notificaciones */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
}

.toast {
    background-color: var(--white);
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    margin-top: var(--spacing-sm);
    display: flex;
    align-items: center;
    max-width: 350px;
    transform: translateX(400px);
    opacity: 0;
    transition: transform 0.5s ease, opacity 0.3s ease;
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast-icon {
    width: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary);
    color: var(--white);
    padding: var(--spacing-md);
    font-size: 1.2rem;
}

.toast-icon.success {
    background-color: var(--success);
}

.toast-icon.error {
    background-color: var(--danger);
}

.toast-icon.warning {
    background-color: var(--warning);
}

.toast-content {
    padding: var(--spacing-md);
    flex: 1;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 2px;
}

.toast-message {
    font-size: 0.9rem;
    color: var(--gray-600);
}

.toast-close {
    padding: var(--spacing-sm);
    color: var(--gray-500);
    cursor: pointer;
    font-size: 1.1rem;
    transition: var(--transition-fast);
}

.toast-close:hover {
    color: var(--gray-800);
}

.toast-progress {
    height: 3px;
    background-color: var(--primary-lighter);
    width: 100%;
}

@keyframes progress {
    from {
        width: 100%;
    }

    to {
        width: 0%;
    }
}

/* Animaciones */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

/* Responsive */
@media (max-width: 992px) {
    .preview-layout {
        flex-direction: column;
        height: auto;
        max-height: none;
        overflow-y: auto;
    }

    .preview-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--gray-200);
        flex-direction: row;
        align-items: flex-start;
        gap: var(--spacing-lg);
    }

    .preview-cover {
        width: 180px;
        flex-shrink: 0;
        margin-bottom: 0;
    }

    .preview-main {
        padding: var(--spacing-lg);
    }

    .preview-meta {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .biblioteca-search {
        flex-direction: column;
        align-items: stretch;
    }

    .biblioteca-search .search-container {
        width: 100%;
    }

    .advanced-search-grid {
        grid-template-columns: 1fr;
    }

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

    .preview-sidebar {
        flex-direction: column;
    }

    .preview-cover {
        width: 100%;
        max-width: 180px;
        margin: 0 auto var(--spacing-md);
    }

    .recurso-list-item {
        flex-direction: column;
    }

    .recurso-list-left {
        flex: 0 0 auto;
        width: 100%;
        display: flex;
        align-items: center;
        gap: var(--spacing-md);
    }

    .recurso-mini-cover {
        width: 80px;
        height: 120px;
    }

    .recurso-list-content {
        padding-right: 0;
    }

    .recurso-list-right {
        width: 100%;
        padding-left: 0;
        border-left: none;
        border-top: 1px solid var(--gray-200);
        padding-top: var(--spacing-md);
        align-items: flex-start;
    }

    .recurso-actions-list {
        width: 100%;
        flex-direction: row;
    }
}


.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Estilos mejorados para la sección de contacto */
.contact-section {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(to bottom, var(--gray-100), var(--white));
}

.contact-container {
    display: flex;

    max-width: 1200px;
    margin: 0 auto;
}

.contact-info {
    padding: var(--spacing-xl);
    /* Padding más grande */
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    height: fit-content;
    transition: var(--transition-normal);
}

.contact-info:hover {
    box-shadow: var(--shadow-lg);
}

.contact-heading {
    font-size: 1.8rem;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-md);
    font-weight: bold;
    position: relative;
    padding-bottom: 12px;
}

.contact-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}

.contact-subheading {
    font-size: 1.1rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
    /* Más espacio después del subtítulo */
    line-height: 1.6;
}

.contact-details {
    margin-bottom: var(--spacing-xl);
    /* Más espacio después de detalles */
}

.contact-detail-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
    /* Más separación entre items */
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition-normal);
}

.contact-detail-item:hover {
    transform: translateX(5px);
}

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

.contact-icon {
    width: 48px;
    /* Iconos más grandes */
    height: 48px;
    background-color: var(--primary-light);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-right: var(--spacing-lg);
    /* Más separación del texto */
    flex-shrink: 0;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.contact-detail-item:hover .contact-icon {
    background-color: var(--primary);
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.contact-detail-content {
    flex: 1;
}

.contact-detail-label {
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 5px;
    font-size: 1.05rem;
}

.contact-detail-text {
    color: var(--gray-700);
    line-height: 1.5;
}

.contact-map {
    height: 280px;
    /* Mapa más alto */
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    margin-top: var(--spacing-lg);
    border: 4px solid var(--white);
}

.contact-map iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.contact-social {
    display: flex;
    gap: var(--spacing-md);
    /* Mayor separación entre iconos */
    margin-top: var(--spacing-lg);
    justify-content: center;
    /* Centrar los iconos */
}

.social-link {
    width: 42px;
    /* Iconos sociales más grandes */
    height: 42px;
    border-radius: 50%;
    background-color: var(--primary-light);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.social-link:hover {
    background-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

/* Formulario de contacto */
.contact-form-container {
    background-color: var(--white);
    padding: var(--spacing-xl);
    /* Padding más grande */
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.contact-form-container:hover {
    box-shadow: var(--shadow-lg);
}

.form-heading {
    font-size: 1.8rem;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-md);
    font-weight: bold;
    position: relative;
    padding-bottom: 12px;
}

.form-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}

.form-subheading {
    font-size: 1.1rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
    /* Más espacio después del subtítulo */
    line-height: 1.6;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    /* Más espacio entre campos del formulario */
}

.form-group {
    position: relative;
}

.form-control {
    width: 100%;
    padding: 16px 20px;
    /* Campo más alto */
    padding-left: 50px;
    border: 2px solid var(--gray-300);
    /* Borde más visible */
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    transition: var(--transition-normal);
    background-color: var(--gray-100);
    color: var(--gray-800);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(51, 124, 207, 0.2);
    background-color: var(--white);
}

textarea.form-control {
    min-height: 160px;
    /* Textarea más alto */
    resize: vertical;
}

.form-label {
    position: absolute;
    left: 50px;
    top: 16px;
    color: var(--gray-600);
    pointer-events: none;
    transition: var(--transition-normal);
    font-size: 1rem;
}

.form-control:focus~.form-label,
.form-control:not(:placeholder-shown)~.form-label {
    transform: translateY(-25px) scale(0.85);
    color: var(--primary);
    background-color: var(--white);
    padding: 0 5px;
    left: 15px;
    font-weight: 600;
}

.form-icon {
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-500);
    transition: var(--transition-normal);
    font-size: 1.1rem;
}

.form-control:focus~.form-icon {
    color: var(--primary);
}

.form-group.textarea .form-icon {
    top: 24px;
    transform: none;
}

.form-error {
    color: #dc3545;
    font-size: 0.85rem;
    margin-top: 5px;
    display: none;
    animation: fadeIn 0.3s ease;
}

.form-group.error .form-control {
    border-color: #dc3545;
    background-color: rgba(220, 53, 69, 0.05);
}

.form-group.error .form-error {
    display: block;
}

.form-group.error .form-icon {
    color: #dc3545;
}

.submit-btn {
    background: linear-gradient(to right, var(--primary), var(--primary-light));
    color: var(--white);
    border: none;
    border-radius: var(--border-radius-md);
    padding: 16px 30px;
    /* Botón más alto */
    font-size: 1.1rem;
    /* Texto más grande */
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
    margin-top: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.submit-btn:active {
    transform: translateY(-1px);
}

.submit-btn .btn-text {
    position: relative;
    z-index: 2;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, var(--primary-light), var(--primary));
    transition: var(--transition-normal);
    z-index: 1;
}

.submit-btn:hover::before {
    left: 0;
}

.btn-icon {
    position: relative;
    z-index: 2;
}

.spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 1s ease-in-out infinite;
    position: relative;
    z-index: 2;
}

.submit-btn.loading .spinner {
    display: inline-block;
}

.submit-btn.loading .btn-icon {
    display: none;
}

/* Animaciones */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Mejoras responsive */
@media (max-width: 1100px) {
    .contact-container {
        grid-template-columns: minmax(280px, 1fr) minmax(300px, 1.1fr);
        gap: var(--spacing-lg);
    }
}

@media (max-width: 900px) {
    .contact-container {
        grid-template-columns: 1fr;
    }

    .contact-info {
        order: 2;
        /* Cambia el orden en móvil */
    }

    .contact-form-container {
        order: 1;
        /* Formulario primero en móvil */
    }

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

    .contact-detail-item {
        margin-bottom: 0;
        padding-bottom: var(--spacing-md);
    }
}

@media (max-width: 600px) {
    .contact-details {
        display: block;
        /* Vuelve a una columna en móviles pequeños */
    }

    .contact-detail-item {
        margin-bottom: var(--spacing-md);
    }

    .contact-icon {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
    }

    .form-control {
        padding: 14px 18px;
        padding-left: 45px;
        font-size: 0.95rem;
    }

    .form-label {
        font-size: 0.95rem;
        left: 45px;
        top: 14px;
    }

    .contact-info,
    .contact-form-container {
        padding: var(--spacing-lg);
    }
}

.animate-fade-right {
    animation: fadeInRight 0.6s ease forwards;
}

.animate-fade-left {
    animation: fadeInLeft 0.6s ease forwards;
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

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

/* FAQ Sección */
.faq-section {
    padding: var(--spacing-xxl) 0;
    background-color: var(--white);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--gray-100);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    background-color: var(--white);
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition-fast);
}

.faq-item.active .faq-question {
    background-color: var(--primary-light);
    color: var(--white);
    border-bottom-color: transparent;
}

.faq-question-text {
    font-weight: 600;
    font-size: 1.1rem;
}

.faq-toggle {
    background-color: var(--gray-200);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    flex-shrink: 0;
    margin-left: var(--spacing-md);
}

.faq-item.active .faq-toggle {
    background-color: var(--white);
    color: var(--primary);
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 var(--spacing-lg);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: var(--spacing-md) var(--spacing-lg);
    max-height: 500px;
}

.faq-answer-text {
    color: var(--gray-700);
    line-height: 1.6;
}

/* Responsive */
@media (max-width: 992px) {
    .contact-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .contact-info {
        order: 2;
    }

    .contact-form-container {
        order: 1;
    }
}

@media (max-width: 576px) {
    .contact-detail-item {
        flex-direction: column;
    }

    .contact-icon {
        margin-bottom: var(--spacing-sm);
    }

    .form-label {
        font-size: 0.9rem;
    }

    .form-control {
        font-size: 0.9rem;
        padding: 12px 15px 12px 40px;
    }
}

.inverted-colors {
    filter: invert(100%) hue-rotate(180deg);
}

.inverted-colors img,
.inverted-colors video {
    filter: invert(100%) hue-rotate(180deg);
}

/* Fix for accessibility panel buttons in inverted mode */
.inverted-colors .accessibility-panel .accessibility-btn {
    filter: invert(100%) hue-rotate(180deg);
}