/* Base Styles */
:root {
    --primary-color: #000000;
    --secondary-color: #333333;
    --accent-color: #555555;
    --text-color: #212121;
    --text-light: #666666;
    --background-color: #ffffff;
    --background-light: #f8f8f8;
    --background-dark: #e0e0e0;
    --border-color: #e0e0e0;
    --font-primary: 'Helvetica Neue', Arial, sans-serif;
    --font-secondary: Georgia, serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--background-color);
}

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

img {
    max-width: 100%;
    height: auto;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

a:hover {
    color: var(--accent-color);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-sm);
}

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

.section-title {
    font-size: 2.25rem;
    margin-bottom: var(--spacing-md);
    position: relative;
    text-align: center;
}

.section-title:after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
    margin: var(--spacing-sm) auto var(--spacing-md);
}

.section-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
    color: var(--text-light);
    font-size: 1.1rem;
}

.subsection-title {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

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

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

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

.btn-text {
    padding: 0;
    background-color: transparent;
    color: var(--primary-color);
    position: relative;
}

.btn-text:after {
    content: '';
    position: absolute;
    width: 100%;
    height: 1px;
    bottom: -2px;
    left: 0;
    background-color: var(--primary-color);
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform 0.3s ease;
}

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

.btn-text:hover:after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.875rem;
}

.btn i {
    margin-left: 8px;
    transition: transform 0.3s ease;
}

.btn:hover i {
    transform: translateX(5px);
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-sm) 0;
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

header.scrolled {
    padding: 0.5rem 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 40px;
    transition: all 0.3s ease;
}

header.scrolled .logo img {
    height: 35px;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: var(--spacing-md);
}

nav ul li a {
    font-weight: 500;
    position: relative;
}

nav ul li a:after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform 0.3s ease;
}

nav ul li a:hover:after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

.header-right {
    display: flex;
    align-items: center;
}

.search {
    margin-right: var(--spacing-md);
    cursor: pointer;
}

.mobile-menu-toggle {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
}

/* Hero Section */
#hero {
    background-color: var(--background-light);
    padding: calc(var(--spacing-xl) * 2) 0 var(--spacing-xl);
    margin-top: 76px;
}

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

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Latest Research Section */
#latest-research {
    background-color: white;
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.research-card {
    background-color: white;
    border: 1px solid var(--border-color);
    padding: var(--spacing-md);
    transition: all 0.3s ease;
}

.research-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.research-date {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xs);
}

.research-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.research-category {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.research-summary {
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.view-all-research {
    text-align: center;
    margin-top: var(--spacing-md);
}

/* Research Areas Section */
#research {
    background-color: var(--background-light);
}

.research-areas {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.research-area {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: 4px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.research-area-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.research-area h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

/* Methodology Section */
#methodology {
    background-color: white;
}

.methodology-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
}

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

.methodology-process {
    margin-top: var(--spacing-md);
}

.process-step {
    display: flex;
    margin-bottom: var(--spacing-md);
}

.step-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0.7;
    margin-right: var(--spacing-md);
    min-width: 50px;
}

.step-content h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--primary-color);
}

.methodology-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.sidebar-box {
    background-color: var(--background-light);
    padding: var(--spacing-md);
    border-radius: 4px;
}

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

.sidebar-box ul {
    list-style-type: disc;
    padding-left: var(--spacing-md);
}

.sidebar-box ul li {
    margin-bottom: var(--spacing-xs);
}

.methodology-quote {
    border-left: 4px solid var(--primary-color);
    background-color: transparent;
    padding-left: var(--spacing-md);
}

.methodology-quote blockquote {
    font-style: italic;
    color: var(--text-light);
    font-size: 1.1rem;
}

/* Team Section */
#team {
    background-color: var(--background-light);
}

.team-leadership {
    margin-bottom: var(--spacing-xl);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.team-member {
    background-color: white;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

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

.team-member-info {
    padding: var(--spacing-md);
}

.team-member-info h4 {
    margin-bottom: var(--spacing-xs);
    font-size: 1.25rem;
}

.team-member-position {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.specialist-areas {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.specialist-area {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: 4px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

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

.specialist-area h4 {
    margin-bottom: var(--spacing-sm);
}

/* Contact Section */
#contact {
    background-color: white;
}

.contact-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
}

.contact-form-wrapper {
    background-color: var(--background-light);
    padding: var(--spacing-lg);
    border-radius: 4px;
}

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

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.1);
}

.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.radio-option {
    display: flex;
    align-items: center;
}

.radio-option input {
    margin-right: 8px;
    width: auto;
}

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

.info-box {
    background-color: var(--background-light);
    padding: var(--spacing-md);
    border-radius: 4px;
}

.info-box h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.contact-list {
    list-style: none;
    margin-top: var(--spacing-sm);
}

.contact-list li {
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
}

.contact-list li i,
.contact-email i {
    margin-right: var(--spacing-xs);
    color: var(--primary-color);
}

.contact-email {
    display: inline-flex;
    align-items: center;
    margin-top: var(--spacing-xs);
    font-weight: 600;
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-logo img {
    height: 40px;
    margin-bottom: var(--spacing-sm);
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.footer-column h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
    color: white;
}

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

.footer-column ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-column ul li a:hover {
    color: white;
}

.footer-social {
    display: flex;
    justify-content: flex-end;
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    margin-left: var(--spacing-sm);
    transition: all 0.3s ease;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-legal p {
    margin-bottom: 0;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

.footer-policies a {
    color: rgba(255, 255, 255, 0.7);
    margin-left: var(--spacing-md);
    font-size: 0.875rem;
}

.footer-policies a:hover {
    color: white;
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .section-title {
        font-size: 2rem;
    }
    
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .research-areas,
    .specialist-areas {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .methodology-container,
    .contact-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .research-grid,
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .footer-logo,
    .footer-social {
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
        margin-top: var(--spacing-md);
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-legal {
        margin-bottom: var(--spacing-sm);
    }
    
    .footer-policies a {
        margin: 0 var(--spacing-xs);
    }
    
    nav {
        display: none;
    }
    
    nav.active {
        display: block;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: white;
        padding: var(--spacing-md);
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    }
    
    nav.active ul {
        flex-direction: column;
    }
    
    nav.active ul li {
        margin: var(--spacing-xs) 0;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .header-right {
        display: none;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
}

@media (max-width: 576px) {
    :root {
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .research-grid,
    .research-areas,
    .team-grid,
    .specialist-areas {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .radio-group {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    .footer-disclaimer {
    margin-top: 15px;
    padding-top: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .footer-disclaimer p {
    color: rgba(255, 255, 255, 0.7);
    font-color: #212121;
    font-size: 8px;
    line-height: 1.3;
    text-align: center;
    margin: 0;
    padding: 0;
    font-weight: 300;
    letter-spacing: 0.2px;
    }

}