:root {
    /* Base Colors */
    --color-primary: #2a9d8f;
    --color-primary-dark: #217e73;
    --color-primary-light: #6dc7bd;
    --color-secondary: #e76f51;
    --color-secondary-dark: #d15a3c;
    --color-secondary-light: #f29c85;
    --color-tertiary: #f4a261;
    --color-tertiary-dark: #d88f55;
    --color-tertiary-light: #f9c097;
    
    /* Neutral Colors */
    --color-black: #1a1a1a;
    --color-dark: #2c2c2c;
    --color-gray-dark: #555555;
    --color-gray: #888888;
    --color-gray-light: #cccccc;
    --color-light: #f4f4f4;
    --color-white: #ffffff;
    
    /* UI Colors */
    --color-success: #4caf50;
    --color-warning: #ff9800;
    --color-error: #e53935;
    --color-info: #2196f3;
    
    /* Background Colors */
    --bg-primary: var(--color-white);
    --bg-secondary: var(--color-light);
    --bg-accent: var(--color-primary-light);
    
    /* Text Colors */
    --text-primary: var(--color-dark);
    --text-secondary: var(--color-gray-dark);
    --text-light: var(--color-white);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-circle: 50%;
    
    /* Shadows */
    --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 24px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Typography */
    --font-heading: 'Manrope', sans-serif;
    --font-body: 'Rubik', sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-md: 1.125rem;
    --text-lg: 1.25rem;
    --text-xl: 1.5rem;
    --text-2xl: 1.875rem;
    --text-3xl: 2.25rem;
    --text-4xl: 3rem;
    --text-5xl: 3.75rem;
    
    /* Z-index */
    --z-negative: -1;
    --z-low: 10;
    --z-mid: 100;
    --z-high: 1000;
    
    /* Container widths */
    --container-sm: 640px;
    --container-md: 960px;
    --container-lg: 1140px;
    --container-xl: 1320px;
}

/* Global Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Base Styles */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-weight: var(--font-weight-regular);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: var(--font-weight-semibold);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: var(--text-4xl);
}

h2 {
    font-size: var(--text-3xl);
}

h3 {
    font-size: var(--text-2xl);
}

h4 {
    font-size: var(--text-xl);
}

h5 {
    font-size: var(--text-lg);
}

h6 {
    font-size: var(--text-md);
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

ul, ol {
    list-style-position: inside;
    margin-bottom: var(--spacing-sm);
}

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

/* Container */
.container {
    width: 100%;
    max-width: var(--container-lg);
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
    margin-left: auto;
    margin-right: auto;
}

/* Section */
.section {
    padding: var(--spacing-lg) 0;
    position: relative;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.section-title::after {
    content: "";
    display: block;
    width: 80px;
    height: 3px;
    background-color: var(--color-primary);
    margin: var(--spacing-sm) auto 0;
}

.section-title.light {
    color: var(--text-light);
}

.section-title.light::after {
    background-color: var(--text-light);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-heading);
    font-weight: var(--font-weight-medium);
    font-size: var(--text-base);
    line-height: 1;
    text-align: center;
    text-decoration: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--text-light);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    text-decoration: none;
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: var(--text-light);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover, .btn-secondary:focus {
    background-color: var(--color-secondary-dark);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    text-decoration: none;
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--text-light);
    color: var(--text-light);
}

.btn-outline:hover, .btn-outline:focus {
    background-color: var(--text-light);
    color: var(--color-primary);
    transform: translateY(-2px);
    text-decoration: none;
}

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

.btn-light:hover, .btn-light:focus {
    background-color: var(--color-light);
    color: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    text-decoration: none;
}

button, input[type='submit'] {
    cursor: pointer;
    font-family: var(--font-heading);
    transition: all var(--transition-normal);
}

/* Read More Links */
.read-more-link {
    display: inline-block;
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    position: relative;
    padding-right: 1.5rem;
    transition: all var(--transition-normal);
}

.read-more-link::after {
    content: "→";
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    transition: transform var(--transition-normal);
}

.read-more-link:hover {
    color: var(--color-primary-dark);
    padding-right: 1.7rem;
    text-decoration: none;
}

.read-more-link:hover::after {
    transform: translate(4px, -50%);
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-high);
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: all var(--transition-normal);
    padding: 1rem 0;
}

.header.scrolled {
    padding: 0.5rem 0;
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

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

.logo {
    font-family: var(--font-heading);
    font-weight: var(--font-weight-bold);
    font-size: var(--text-xl);
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.logo:hover {
    color: var(--color-primary-dark);
    text-decoration: none;
}

.navigation {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

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

.nav-list li a {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    padding: 0.5rem 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-list li a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-normal);
}

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

.nav-list li a:hover::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: 3px;
    transition: all var(--transition-normal);
}

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

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

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

/* Hero Section */
.hero {
    position: relative;
    padding: 10rem 0 6rem;
    color: var(--text-light);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    text-align: center;
}

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

.hero-title {
    font-size: var(--text-5xl);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

/* About Section */
.about-wrapper {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.about-content {
    flex: 1;
    min-width: 300px;
}

.about-image {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.about-image img {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-normal);
}

.about-image img:hover {
    transform: scale(1.02);
}

.stats-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.stat-item {
    flex: 1;
    min-width: 200px;
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.stat-text {
    color: var(--text-secondary);
}

/* Vision Section */
.vision {
    color: var(--text-light);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    text-align: center;
}

.vision-content {
    max-width: 900px;
    margin: 0 auto var(--spacing-lg);
}

.vision-text {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-md);
}

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

/* Insights Section */
.insights-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    justify-content: center;
}

.insight-card {
    flex: 1;
    min-width: 300px;
    max-width: 400px;
    background-color: var(--bg-primary);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    display: flex;
    flex-direction: column;
    align-items: center;
}

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

.card-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.insight-card:hover .card-image img {
    transform: scale(1.05);
}

.card-content {
    padding: var(--spacing-md);
    text-align: center;
}

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

/* Research Section */
.research-wrapper {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.research-content {
    flex: 1;
    min-width: 300px;
}

.research-image {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.research-image img {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

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

.resources-list {
    list-style: none;
    padding: 0;
    margin: var(--spacing-sm) 0 0;
}

.resources-list li {
    margin-bottom: var(--spacing-sm);
    padding-left: 1.5rem;
    position: relative;
}

.resources-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

.resources-list a {
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

.resources-list a:hover {
    color: var(--color-primary);
}

/* Gallery Section */
.gallery-slider {
    position: relative;
    display: flex;
    flex-wrap: nowrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    overflow-x: hidden;
}

.gallery-item {
    flex: 0 0 auto;
    width: 100%;
    max-width: 400px;
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.gallery-item img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: var(--text-light);
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.gallery-item:hover .gallery-caption {
    opacity: 1;
    transform: translateY(0);
}

.gallery-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.prev-btn, .next-btn {
    background: var(--color-primary);
    color: var(--text-light);
    width: 50px;
    height: 50px;
    border-radius: var(--radius-circle);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    border: none;
    transition: all var(--transition-normal);
}

.prev-btn:hover, .next-btn:hover {
    background: var(--color-primary-dark);
    transform: scale(1.1);
}

.prev-btn span, .next-btn span {
    font-size: var(--text-xl);
    line-height: 1;
}

/* Clientele Section */
.clientele-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    justify-content: center;
}

.clientele-item {
    flex: 1;
    min-width: 300px;
    max-width: 400px;
    background-color: var(--bg-primary);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    display: flex;
    flex-direction: column;
    align-items: center;
}

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

/* Testimonials Section */
.testimonials {
    color: var(--text-light);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.testimonials-slider {
    position: relative;
    max-width: 900px;
    margin: 0 auto var(--spacing-md);
}

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

.quote {
    font-size: var(--text-lg);
    font-style: italic;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.quote::before, .quote::after {
    content: """;
    font-size: 4rem;
    font-family: serif;
    position: absolute;
    opacity: 0.3;
}

.quote::before {
    top: -20px;
    left: -10px;
}

.quote::after {
    content: """;
    bottom: -40px;
    right: -10px;
}

.client {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.client img {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-circle);
    object-fit: cover;
    border: 3px solid var(--color-light);
}

.client-info {
    text-align: left;
}

.client-info h4 {
    margin-bottom: 0.25rem;
}

.testimonial-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

/* Customer Stories Section */
.stories-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    justify-content: center;
}

.story-card {
    flex: 1;
    min-width: 300px;
    max-width: 400px;
    background-color: var(--bg-primary);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    display: flex;
    flex-direction: column;
    align-items: center;
}

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

/* Awards Section */
.awards-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.award-item {
    flex: 1;
    min-width: 250px;
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.award-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

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

.award-icon img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    margin: 0 auto;
}

.publication-highlight {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.publications-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-sm);
}

.publications-logos img {
    height: 80px;
    width: auto;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: filter var(--transition-normal), opacity var(--transition-normal);
}

.publications-logos img:hover {
    filter: grayscale(0%);
    opacity: 1;
}

/* Contact Section */
.contact-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.contact-info {
    flex: 1;
    min-width: 300px;
}

.contact-details {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0;
}

.contact-details li {
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: flex-start;
}

.contact-details span {
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    min-width: 70px;
    display: inline-block;
}

.contact-hours {
    margin-top: var(--spacing-md);
}

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

.contact-form-container {
    flex: 1;
    min-width: 300px;
}

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

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: var(--text-base);
    background-color: var(--bg-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.2);
}

/* Footer */
.footer {
    background-color: var(--color-dark);
    color: var(--text-light);
    padding-top: var(--spacing-lg);
}

.footer-top {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    flex: 1;
    min-width: 250px;
}

.footer-logo h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.footer-links {
    flex: 2;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer-nav, .footer-programs, .footer-legal {
    min-width: 150px;
}

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

.footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.footer a {
    color: var(--color-gray-light);
    transition: color var(--transition-fast);
    text-decoration: none;
}

.footer a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.footer-contact {
    flex: 1;
    min-width: 250px;
}

.footer-bottom {
    padding: var(--spacing-md) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    color: var(--color-gray-light);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.social-links a:hover {
    color: var(--color-primary);
    transform: translateY(-3px);
}

/* Success Page */
.success-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-lg);
}

.success-content {
    max-width: 600px;
    padding: var(--spacing-lg);
    background-color: var(--bg-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.success-content h1 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

/* Privacy & Terms Pages */
.privacy-page, .terms-page {
    padding-top: 100px;
    padding-bottom: var(--spacing-lg);
}

.content-container {
    max-width: 900px;
    margin: 0 auto;
}

/* Responsive Design */
@media (max-width: 1024px) {
    html {
        font-size: 15px;
    }
    
    .hero-title {
        font-size: var(--text-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--text-lg);
    }
    
    .gallery-item, .insight-card, .clientele-item, .story-card {
        max-width: 350px;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .navigation {
        display: none;
    }
    
    .navigation.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--bg-primary);
        box-shadow: var(--shadow-md);
        padding: var(--spacing-md) 0;
    }
    
    .nav-list {
        flex-direction: column;
        width: 100%;
    }
    
    .nav-list li {
        margin: 0;
        width: 100%;
        text-align: center;
    }
    
    .nav-list li a {
        display: block;
        padding: var(--spacing-sm) 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero {
        padding: 8rem 0 4rem;
    }
    
    .hero-title {
        font-size: var(--text-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--text-base);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
    
    .section-title {
        font-size: var(--text-2xl);
    }
    
    .about-wrapper, .research-wrapper, .contact-wrapper {
        gap: var(--spacing-md);
    }
    
    .testimonial-item {
        padding: var(--spacing-md);
    }
    
    .footer-top {
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    html {
        font-size: 13px;
    }
    
    .hero {
        padding: 7rem 0 3rem;
    }
    
    .hero-title {
        font-size: var(--text-2xl);
    }
    
    .stat-item, .award-item {
        min-width: 100%;
    }
    
    .client {
        flex-direction: column;
    }
    
    .client-info {
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
        margin-bottom: var(--spacing-sm);
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes slideDown {
    from { transform: translateY(-20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes slideLeft {
    from { transform: translateX(20px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideRight {
    from { transform: translateX(-20px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.animate-fade-in {
    animation: fadeIn var(--transition-normal) forwards;
}

.animate-slide-up {
    animation: slideUp var(--transition-normal) forwards;
}

.animate-slide-down {
    animation: slideDown var(--transition-normal) forwards;
}

.animate-slide-left {
    animation: slideLeft var(--transition-normal) forwards;
}

.animate-slide-right {
    animation: slideRight var(--transition-normal) forwards;
}

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

main {
    overflow-x: hidden;
}