:root {
    --primary: #6B46C1;
    --primary-dark: #553C9A;
    --primary-light: #9F7AEA;
    --primary-lighter: #E9D8FD;
    --primary-gradient: linear-gradient(135deg, #6B46C1, #805AD5);
    --accent: #4C1D95;
    --accent-light: #7F3DCD;
    --text-dark: #2D3748;
    --text-light: #4A5568;
    --bg-light: #F7FAFC;
    --bg-dark: #1A202C;
    --white: #FFFFFF;
    --border-light: #E2E8F0;
    --gray-100: #EDF2F7;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E0;
    --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 -3px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--bg-light);
}

.container-large {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.nav-container {
    background-color: var(--white);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
}

.nav-logo {
    height: 40px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Newsletter Banner */
.newsletter-banner {
    background-color: var(--banner-blue);
    color: var(--white);
    padding: 0.75rem 0;
}

.newsletter-banner p {
    text-align: center;
    font-weight: 500;
}

.arrow-icon {
    display: inline-block;
    margin-left: 0.25rem;
}

/* Buttons */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    border-radius: 0.375rem;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
}

.button-outline {
    border: 1px solid var(--gray-300);
    color: var(--text-dark);
    background-color: transparent;
}

.button-outline:hover {
    background-color: var(--gray-100);
}

.button-filled {
    background-color: var(--gray-100);
    color: var(--text-dark);
    border: 1px solid var(--gray-200);
}

.button-filled:hover {
    background-color: var(--gray-200);
}

.button-primary {
    background-color: var(--primary);
    color: white;
    border: none;
}

.button-primary:hover {
    background-color: var(--primary-dark);
}

.button-secondary {
    background-color: white;
    color: var(--primary);
    border: 1px solid var(--primary-light);
}

.button-secondary:hover {
    background-color: var(--gray-100);
}

/* Hero Section */
.hero-section {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, var(--primary-light) 0%, transparent 60%);
    opacity: 0.4;
    z-index: 0;
}

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

.hero-heading {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, var(--white), var(--primary-lighter));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    margin-bottom: 2rem;
    font-size: 1.25rem;
    max-width: 650px;
}

.button-container {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Featured Section */
.featured-section {
    padding: 5rem 0;
    background-color: var(--white);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary-gradient);
    border-radius: 2px;
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.featured-card {
    background-color: var(--white);
    border: 1px solid var(--border-light);
    border-radius: 0.5rem;
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.featured-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.card-icon {
    margin-bottom: 1.5rem;
}

.featured-card h3 {
    font-family: 'Manrope', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.featured-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.learn-more {
    display: inline-flex;
    align-items: center;
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s;
}

.learn-more:hover {
    color: var(--primary-dark);
}

.see-all {
    text-align: center;
    margin-top: 1rem;
}

.see-all a {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.375rem;
    background-color: var(--gray-100);
    color: var(--text-dark);
    font-weight: 600;
    text-decoration: none;
    transition: background-color 0.2s;
}

.see-all a:hover {
    background-color: var(--gray-200);
}

/* Quote Section */
.quote-section {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.quote-content {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.quote-image {
    flex: 0 0 200px;
}

.quote-image img {
    width: 100%;
    border-radius: 50%;
}

.quote-text {
    flex: 1;
}

blockquote {
    font-family: 'Manrope', sans-serif;
    font-size: 1.5rem;
    font-weight: 500;
    font-style: italic;
    line-height: 1.4;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.quote-author h3 {
    font-family: 'Manrope', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.quote-author p {
    color: var(--text-light);
    margin-bottom: 0.25rem;
}

/* Risks Section */
.risks-section {
    padding: 5rem 0;
    background-color: var(--white);
}

.risks-content {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.risks-text {
    flex: 1;
}

.risks-text p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    max-width: 650px;
}

.risks-image {
    flex: 0 0 300px;
}

.risks-image img {
    width: 100%;
}

/* Partners Section */
.partners-section {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.partners-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
}

.partner-logo {
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.partner-logo:hover {
    opacity: 1;
}

.partner-logo img {
    max-height: 100%;
    max-width: 150px;
}

/* Footer */
.footer {
    background-color: var(--bg-dark);
    color: var(--white);
    padding: 4rem 0;
}

.footer-heading {
    color: var(--primary-light);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    flex: 0 0 200px;
}

.footer-logo-img {
    height: 40px;
    width: auto;
}

.footer-links {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 3rem;
}

.footer-column h4 {
    font-family: 'Manrope', sans-serif;
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
}

.footer-column a {
    display: block;
    color: var(--gray-300);
    text-decoration: none;
    margin-bottom: 0.75rem;
    transition: color 0.2s;
}

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

.footer-column p {
    color: var(--gray-300);
    margin-bottom: 0.75rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
    text-align: center;
    color: var(--gray-300);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 960px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .quote-content {
        flex-direction: column;
        text-align: center;
    }
    
    .quote-image {
        flex: 0 0 150px;
    }
    
    .risks-content {
        flex-direction: column-reverse;
    }
}

@media (max-width: 768px) {
    .nav-wrapper {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .featured-grid {
        grid-template-columns: 1fr;
    }
}

/* Page Header */
.page-header {
    padding: 5rem 0 3rem;
    background: linear-gradient(135deg, var(--bg-light) 0%, #F3E8FF 100%);
    text-align: center;
}

.page-header h1 {
    font-family: 'Manrope', sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.header-description {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto;
    color: var(--text-light);
}

/* Research Areas */
.research-areas-section {
    padding: 5rem 0;
    background-color: var(--white);
}

.research-areas-section:nth-child(even) {
    background-color: var(--bg-light);
}

.research-content {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.research-content.reverse {
    flex-direction: row-reverse;
}

.research-text {
    flex: 3;
}

.research-text p {
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
}

.research-highlights {
    margin-top: 2rem;
    padding-left: 1.5rem;
}

.research-highlights li {
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.research-image {
    flex: 2;
}

.research-image img {
    width: 100%;
    border-radius: 0.5rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* Projects */
.projects-section {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: var(--white);
    border-radius: 0.5rem;
    padding: 2rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.project-card h3 {
    font-family: 'Manrope', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary);
}

.project-card p {
    margin-bottom: 1.5rem;
}

.project-partners {
    font-size: 0.875rem;
    color: var(--text-light);
    font-style: italic;
}

/* Active navigation link */
.nav-links a.active {
    color: var(--primary);
    position: relative;
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary);
}

/* Responsive adjustments */
@media (max-width: 960px) {
    .research-content {
        flex-direction: column;
    }
    
    .research-content.reverse {
        flex-direction: column;
    }
    
    .page-header h1 {
        font-size: 2.5rem;
    }
}

/* Enhanced buttons */
.btn-primary {
    background: var(--primary-gradient);
    color: var(--white);
    border: none;
    padding: 0.8rem 1.8rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Card design */
.feature-card {
    background-color: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    z-index: 1;
}

.feature-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-gradient);
}

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

/* Navbar enhancement */
.navbar {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.nav-links a {
    position: relative;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: color 0.3s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: width 0.3s ease, left 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
    left: 0;
}

.nav-links a.active::after {
    width: 100%;
    left: 0;
    background: var(--primary-gradient);
}

/* Testimonial cards */
.testimonial-card {
    background-color: var(--white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 10px;
    left: 20px;
    font-size: 5rem;
    color: var(--primary-lighter);
    font-family: serif;
    line-height: 1;
    opacity: 0.7;
}

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

.animate-fadeIn {
    animation: fadeIn 0.8s ease forwards;
}