/* CSS Variables */
:root {
    /* Viridis-inspired color palette */
    --primary-purple: #440154;
    --secondary-purple: #482475;
    --blue: #355f8d;
    --teal: #22a884;
    --green: #7ad151;
    --lime: #bddf26;
    
    /* Utility colors */
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --gray: #6c757d;
    --dark-gray: #343a40;
    --black: #000000;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-purple), var(--blue));
    --gradient-secondary: linear-gradient(135deg, var(--blue), var(--teal));
    --gradient-accent: linear-gradient(135deg, var(--teal), var(--green));
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-2xl: 32px;
    --font-size-3xl: 48px;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border radius */
    --border-radius: 8px;
    --border-radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition: all 0.3s ease;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-purple);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

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

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

.github-btn {
    background: var(--gradient-primary);
    color: var(--white) !important;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--dark-gray);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--light-gray) 0%, var(--white) 100%);
    overflow: hidden;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    color: var(--dark-gray);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--gray);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: var(--font-size-base);
}

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

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

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

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

.hero-image {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    align-items: center;
}

.banner {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

/* Rotating Gallery */
.rotating-gallery {
    width: 100%;
}

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

.gallery-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    justify-content: center;
    align-items: center;
}

.gallery-slide.active {
    opacity: 1;
    position: relative;
}

.gallery-image {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    display: block;
}

.gallery-indicators {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-xs);
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid rgba(255, 255, 255, 0.8);
}

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

.indicator:hover {
    background: rgba(255, 255, 255, 0.8);
}

/* Quick Links */
.quick-links {
    padding: var(--spacing-2xl) 0;
    background: var(--white);
}

.quick-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.quick-link-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    text-decoration: none;
    color: var(--dark-gray);
    border: 1px solid rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    text-align: center;
}

.quick-link-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-purple);
}

.quick-link-card i {
    font-size: 2.5rem;
    color: var(--primary-purple);
    margin-bottom: var(--spacing-md);
}

.quick-link-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.quick-link-card p {
    color: var(--gray);
    line-height: 1.6;
}

/* Section Titles */
.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    color: var(--dark-gray);
}

/* Features Section */
.features {
    padding: var(--spacing-2xl) 0;
    background: var(--light-gray);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    font-size: 2rem;
    color: var(--white);
}

.feature-icon.purple {
    background: var(--gradient-primary);
}

.feature-icon.blue {
    background: var(--gradient-secondary);
}

.feature-icon.teal {
    background: var(--gradient-accent);
}

.feature-icon.green {
    background: linear-gradient(135deg, var(--teal), var(--green));
}

.feature-icon.lime {
    background: linear-gradient(135deg, var(--green), var(--lime));
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--dark-gray);
}

.feature-card p {
    color: var(--gray);
    line-height: 1.6;
}

/* Quick Start Section */
.quickstart {
    padding: var(--spacing-2xl) 0;
    background: var(--white);
}

.quickstart-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.quickstart-card {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.quickstart-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    font-size: 2rem;
    color: var(--white);
}

.quickstart-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

.quickstart-card p {
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
    line-height: 1.6;
}

.quickstart-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.quickstart-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--light-gray);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.quickstart-feature:hover {
    background: var(--white);
    box-shadow: var(--shadow-sm);
}

.quickstart-feature i {
    font-size: 1.5rem;
    color: var(--primary-purple);
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.quickstart-feature h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--dark-gray);
}

.quickstart-feature p {
    color: var(--gray);
    line-height: 1.6;
    margin: 0;
}

/* Documentation Section */
.documentation {
    padding: var(--spacing-2xl) 0;
    background: var(--light-gray);
}

.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.doc-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    text-decoration: none;
    color: var(--dark-gray);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.doc-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.doc-card i {
    font-size: 2.5rem;
    color: var(--primary-purple);
    margin-bottom: var(--spacing-md);
}

.doc-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.doc-card p {
    color: var(--gray);
    line-height: 1.6;
}

/* Community Section */
.community {
    padding: var(--spacing-2xl) 0;
    background: var(--white);
}

.community-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-2xl);
}

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

.community-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    text-decoration: none;
    color: var(--dark-gray);
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.community-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-purple);
}

.community-card i {
    font-size: 2.5rem;
    color: var(--primary-purple);
    margin-bottom: var(--spacing-md);
}

.community-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.community-card p {
    color: var(--gray);
    line-height: 1.6;
}

.cta-section {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    text-align: center;
}

.cta-section h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.cta-section p {
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

/* Footer */
.footer {
    background: var(--dark-gray);
    color: var(--white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

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

.footer-section h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

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

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

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

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

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

.footer-logo-img {
    height: 30px;
    width: auto;
}

.footer-logo span {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--white);
}

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

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-purple);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: rgba(255, 255, 255, 0.98);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        backdrop-filter: blur(10px);
        z-index: 999;
        padding-bottom: 2rem;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 1.rem 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .quickstart-content {
        grid-template-columns: 1fr;
    }
    
    .community-content {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--font-size-xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .quick-links-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .docs-grid {
        grid-template-columns: 1fr;
    }
    
    .community-links {
        grid-template-columns: 1fr;
    }
}

/* Utility classes */
.text-center {
    text-align: center;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

/* Animation classes */
.feature-card,
.quick-link-card,
.doc-card,
.community-card {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.feature-card.animate-in,
.quick-link-card.animate-in,
.doc-card.animate-in,
.community-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* Loading state */
body:not(.loaded) {
    overflow: hidden;
}

body.loaded {
    overflow: auto;
}

/* Publications Page Styles */
.publications-hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--primary-purple) 0%, var(--blue) 100%);
    color: var(--white);
    text-align: center;
}

.publications-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--white);
}

.publications-subtitle {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.publications-list {
    padding: var(--spacing-2xl) 0;
    background: var(--light-gray);
}

.publication-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.publication-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.publication-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
    flex-shrink: 0;
}

.publication-content {
    flex: 1;
}

.publication-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-gray);
    line-height: 1.3;
}

.publication-authors {
    font-size: var(--font-size-base);
    color: var(--primary-purple);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.publication-type {
    display: inline-block;
    background: var(--light-gray);
    color: var(--gray);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.publication-abstract {
    color: var(--gray);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

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

.publication-date,
.publication-institution,
.publication-journal {
    font-size: var(--font-size-sm);
    color: var(--gray);
    font-weight: 500;
}

.publication-date {
    color: var(--primary-purple);
}

/* Responsive design for publications */
@media (max-width: 768px) {
    .publication-card {
        flex-direction: column;
        text-align: center;
    }
    
    .publication-icon {
        margin: 0 auto var(--spacing-md);
    }
    
    .publication-meta {
        justify-content: center;
    }
    
    .publications-title {
        font-size: var(--font-size-2xl);
    }
    
    .publications-subtitle {
        font-size: var(--font-size-base);
    }
}

@media (max-width: 480px) {
    .publication-content h3 {
        font-size: var(--font-size-lg);
    }
    
    .publication-meta {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
} 

/* Talks Page Styles */
.talks-hero {
    background: linear-gradient(135deg, var(--primary-purple), var(--secondary-purple));
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.talks-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #ffffff, #e0e0e0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.talks-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.talks-section {
    padding: 4rem 0;
    background-color: var(--light-gray);
}

.talks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.talk-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.talk-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.talk-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-purple);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.talk-author {
    font-size: 1rem;
    color: var(--gray);
    margin-bottom: 1.5rem;
    font-style: italic;
}

.talk-conference {
    font-size: 0.9rem;
    color: var(--gray);
    font-weight: 500;
    margin-bottom: 0.3rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.7;
}

.video-container {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    border-radius: var(--border-radius);
    overflow: hidden;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: var(--border-radius);
}

/* Responsive Design for Talks */
@media (max-width: 768px) {
    .talks-title {
        font-size: 2rem;
    }
    
    .talks-subtitle {
        font-size: 1rem;
    }
    
    .talks-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .talk-card {
        padding: 1rem;
    }
    
    .talk-title {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .talks-hero {
        padding: 2rem 0;
    }
    
    .talks-title {
        font-size: 1.8rem;
    }
    
    .talks-section {
        padding: 2rem 0;
    }
}