/* Research Networks CSS */

/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* ASEM Brand Colors - Now using centralized theme colors from main.css */
    --primary-teal: var(--color-primary-teal-light);
    --secondary-teal: var(--color-primary-teal);
    --accent-gold: var(--color-accent-gold-variant);
    --navy-blue: var(--color-secondary-navy);
    --light-gray: var(--color-bg-cream);
    --white: var(--color-bg-white);
    --black: var(--color-text-dark);
    --red-accent: var(--color-accent-red);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-teal) 0%, var(--secondary-teal) 100%);
    --gradient-navy: linear-gradient(135deg, var(--navy-blue) 0%, var(--secondary-teal) 100%);
    --gradient-light: linear-gradient(135deg, var(--light-gray) 0%, #e7efee 100%);
    
    /* Typography */
    --font-primary: 'Roboto', sans-serif;
    --font-secondary: 'Poppins', sans-serif;
    
    /* Spacing */
    --section-padding: 80px 0;
    --container-padding: 0 20px;
    --border-radius: 12px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-smooth: all 0.3s ease;
    --transition-bounce: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--black);
    background: var(--light-gray);
    overflow-x: hidden;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--navy-blue);
    color: var(--white);
    padding: 8px;
    text-decoration: none;
    z-index: 10000;
    border-radius: 4px;
    transition: var(--transition-smooth);
}

.skip-link:focus {
    top: 6px;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

/* Navigation */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(90deg, rgba(243,241,236,1) 0%, rgba(243,241,236,0.95) 100%);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    transition: var(--transition-smooth);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo img {
    height: 60px;
    width: auto;
    transition: var(--transition-smooth);
}

.logo img:hover {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-menu li a {
    text-decoration: none;
    color: var(--secondary-teal);
    font-weight: 500;
    padding: 10px 15px;
    border-radius: 25px;
    transition: var(--transition-smooth);
    position: relative;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    background: var(--gradient-primary);
    color: var(--white);
    transform: translateY(-2px);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.hamburger-line {
    width: 25px;
    height: 3px;
    background: var(--secondary-teal);
    margin: 3px 0;
    transition: var(--transition-smooth);
    border-radius: 3px;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, rgba(39, 162, 154, 0.9), rgba(29, 113, 132, 0.9)), 
                url('https://asemlllhub.org/wp-content/uploads/2024/05/DKE270524UCC012-scaled.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, transparent 0%, rgba(35, 45, 96, 0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-family: var(--font-secondary);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.3rem);
    margin-bottom: 30px;
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Introduction Section */
.intro-section {
    padding: var(--section-padding);
    background: var(--white);
}

.intro-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.intro-content h2 {
    font-family: var(--font-secondary);
    font-size: 2.5rem;
    color: var(--secondary-teal);
    margin-bottom: 30px;
    position: relative;
}

.intro-content h2::after {
    content: '';
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    display: block;
    margin: 20px auto 0;
    border-radius: 2px;
}

.intro-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--black);
    opacity: 0.9;
}

/* Networks Section */
.networks-section {
    padding: var(--section-padding);
    background: var(--light-gray);
}

.networks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

/* Network Cards */
.network-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition-smooth);
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.network-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.network-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.network-card:hover .network-image img {
    transform: scale(1.1);
}

.network-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(39, 162, 154, 0.8), rgba(29, 113, 132, 0.8));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-smooth);
}

.network-card:hover .network-overlay {
    opacity: 1;
}

.network-overlay i {
    font-size: 3rem;
    color: var(--white);
    transform: scale(0.8);
    transition: var(--transition-bounce);
}

.network-card:hover .network-overlay i {
    transform: scale(1);
}

.network-content {
    padding: 30px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.network-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.network-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.network-icon i {
    font-size: 1.2rem;
    color: var(--white);
}

.network-header h3 {
    font-family: var(--font-secondary);
    font-size: 1.3rem;
    color: var(--secondary-teal);
    font-weight: 600;
    line-height: 1.3;
}

.network-description {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--black);
    margin-bottom: 20px;
    flex-grow: 1;
}

.network-description strong {
    color: var(--secondary-teal);
    font-weight: 600;
}

.network-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.topic-tag {
    background: linear-gradient(135deg, var(--accent-gold), #c9be9d);
    color: var(--white);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.network-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary-teal);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-smooth);
    align-self: flex-start;
}

.network-link:hover {
    color: var(--primary-teal);
    transform: translateX(5px);
}

.network-link i {
    transition: var(--transition-smooth);
}

.network-link:hover i {
    transform: translateX(3px);
}

/* Statistics Section */
.stats-section {
    padding: var(--section-padding);
    background: var(--gradient-navy);
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.stat-card {
    text-align: center;
    padding: 30px 20px;
    border-radius: var(--border-radius);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.stat-icon {
    width: 70px;
    height: 70px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.stat-icon i {
    font-size: 1.8rem;
    color: var(--secondary-teal);
}

.stat-card h3 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--white);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.stat-card p {
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 500;
}

/* Call to Action Section */
.cta-section {
    padding: var(--section-padding);
    background: var(--white);
    text-align: center;
}

.cta-content h2 {
    font-family: var(--font-secondary);
    font-size: 2.5rem;
    color: var(--secondary-teal);
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.1rem;
    color: var(--black);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-smooth);
    border: 2px solid transparent;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(39, 162, 154, 0.4);
}

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

.btn-secondary:hover {
    background: var(--secondary-teal);
    color: var(--white);
    transform: translateY(-3px);
}

/* Footer */
.footer {
    background: var(--gradient-navy);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-section h3 {
    font-family: var(--font-secondary);
    color: var(--white);
    margin-bottom: 20px;
    font-size: 1.2rem;
    position: relative;
}

.footer-section h3::after {
    content: '';
    width: 40px;
    height: 3px;
    background: var(--accent-gold);
    display: block;
    margin-top: 10px;
    border-radius: 2px;
}

.contact-info p {
    margin-bottom: 8px;
    opacity: 0.9;
}

.contact-info a {
    color: var(--accent-gold);
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

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

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.9;
    transition: var(--transition-smooth);
}

.footer-links a:hover {
    color: var(--accent-gold);
    opacity: 1;
}

.footer-logo img {
    max-width: 200px;
    height: auto;
    margin-bottom: 20px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
}

.social-links a:hover {
    background: var(--accent-gold);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    margin-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

[data-animate].animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .networks-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
    }
    
    .hero {
        background-attachment: scroll;
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow);
        transform: translateY(-20px);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-smooth);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu li a {
        padding: 15px;
        border-radius: 8px;
        display: block;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .networks-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 0 15px;
        --section-padding: 60px 0;
    }
    
    .hero {
        height: 80vh;
    }
    
    .network-card {
        margin: 0 10px;
    }
    
    .network-content {
        padding: 20px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-card {
        padding: 20px;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .network-overlay {
        background: rgba(0, 0, 0, 0.8);
    }
    
    .topic-tag {
        background: var(--secondary-teal);
        border: 1px solid var(--white);
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hero {
        background-attachment: scroll;
    }
}