:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #0f3460;
    --text-primary: #e94560;
    --text-light: #f5f5f5;
    --text-dark: #333;
    --bg-light: #fafafa;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --purple-dark: #764ba2;
    --purple-light: #667eea;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.navbar {
    background: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--text-primary);
}

.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 40vh;
    align-items: center;
    padding: 2rem 0;
}

.hero-content {
    padding: 0 20px;
}

.hero-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    opacity: 0.8;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 0.75rem 2rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

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

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

.hero-visual {
    position: relative;
    height: 500px;
}

.ai-pattern {
    width: 100%;
    height: 100%;
    background: var(--gradient-2);
    opacity: 0.1;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
}

.ai-pattern::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(255,255,255,0.1) 10px,
        rgba(255,255,255,0.1) 20px
    );
    animation: drift 20s linear infinite;
}

@keyframes drift {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

.mission {
    padding: 5rem 0;
    background: white;
}

.mission h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 2rem;
}

.mission-statement {
    font-size: 1.25rem;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    line-height: 1.8;
}

.featured-work {
    padding: 5rem 0;
    background: var(--bg-light);
}

.featured-work h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 3rem;
}

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

.work-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.work-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

.work-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.work-card p {
    margin-bottom: 1.5rem;
    color: var(--text-dark);
    opacity: 0.8;
}

.link-arrow {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: transform 0.3s ease;
    display: inline-block;
}

.link-arrow:hover {
    transform: translateX(5px);
}

.recent-thoughts {
    padding: 5rem 0;
    background: white;
}

.recent-thoughts h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 3rem;
}

.featured-quote {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    border-left: 4px solid var(--text-primary);
    background: rgba(233, 69, 96, 0.05);
}

.featured-quote p {
    font-size: 1.25rem;
    font-style: italic;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.featured-quote cite {
    display: block;
    text-align: right;
    color: var(--text-primary);
    font-style: normal;
}

.collaboration {
    padding: 5rem 0;
    background: var(--gradient-1);
    text-align: center;
    color: white;
}

.collaboration h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.collaboration p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

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

.collaboration .btn-primary:hover {
    background: rgba(255,255,255,0.9);
}

.footer {
    background: var(--primary-color);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-section a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    opacity: 0.7;
}

/* Page Headers */
.page-header {
    background: var(--gradient-1);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.page-header p {
    font-size: 1.25rem;
    opacity: 0.9;
}

/* Forms */
.form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--text-primary);
}

/* Research & Methodology Pages */
.research-main,
.methodology-main,
.collaborate-main,
.contact-main {
    padding: 4rem 0;
    min-height: 60vh;
}

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

.research-card,
.collab-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.research-card:hover,
.collab-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

.methodology-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.step {
    text-align: center;
    padding: 2rem;
}

.step h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-methods {
    margin-top: 2rem;
}

.contact-item {
    margin-bottom: 2rem;
}

.contact-item h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* Dropdown Menu Styles */
.dropdown {
    position: relative;
}

.dropdown-toggle::after {
    content: ' ▼';
    font-size: 0.8em;
    opacity: 0.7;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    border-radius: 5px;
    padding: 0.5rem 0;
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    list-style: none;
    margin-top: 0.5rem;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: 0.5rem 1.5rem;
    color: var(--text-dark);
    text-decoration: none;
    transition: all 0.3s ease;
}

.dropdown-menu a:hover {
    background: var(--bg-light);
    color: var(--text-primary);
}

/* Mobile Styles */
@media (max-width: 768px) {
    /* Container and spacing */
    .container {
        padding: 0 15px;
    }
    
    /* Navigation */
    .nav-container {
        padding: 0.75rem 15px;
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        gap: 1rem;
        justify-content: center;
    }
    
    .nav-menu a {
        font-size: 0.9rem;
    }
    
    /* Hero section */
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        min-height: 60vh;
        padding: 2rem 0;
    }
    
    .hero-title {
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
        margin-bottom: 1.5rem;
    }
    
    .hero-visual {
        display: none;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
    }
    
    .btn {
        width: 200px;
        text-align: center;
    }
    
    /* Content sections */
    .mission {
        padding: 3rem 0;
    }
    
    .mission h2 {
        font-size: 2rem;
    }
    
    .mission-statement {
        font-size: 1.1rem;
        padding: 0 1rem;
    }
    
    .featured-work {
        padding: 3rem 0;
    }
    
    .work-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    /* Blog styles */
    .blog-post {
        padding: 1rem;
    }
    
    .blog-title {
        font-size: 1.75rem;
    }
    
    .blog-meta {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    /* Forms */
    .form-group input,
    .form-group textarea,
    .form-group select {
        font-size: 16px; /* Prevents zoom on iOS */
    }
}

/* Tablet styles */
@media (max-width: 1024px) and (min-width: 769px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .work-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Small mobile styles */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .nav-container {
        padding: 0.5rem 10px;
    }
    
    .container {
        padding: 0 10px;
    }
    
    .btn {
        padding: 0.6rem 1.5rem;
        width: 180px;
    }
}
}

/* YouTube embed styles */
.youtube-embed {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    max-width: 100%;
    margin: 20px 0;
}

.youtube-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* YouTube Embed Styles */
.youtube-embed {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    max-width: 100%;
    margin: 20px 0;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.youtube-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 8px;
}

.post-content .youtube-embed {
    margin: 2rem 0;
}