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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #ffffff;
    color: #1a1a1a;
    line-height: 1.6;
}

header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid #e5e5e5;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
}

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

nav a {
    color: #4b5563;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: #2563eb;
}

main {
    margin-top: 80px;
}

.hero {
    text-align: center;
    padding: 6rem 2rem;
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: #1e293b;
    letter-spacing: -0.025em;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: #64748b;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta {
    display: inline-block;
    padding: 1rem 2rem;
    background: #2563eb;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s;
}

.cta:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
}

section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #1e293b;
}

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

.project {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    transition: transform 0.3s, box-shadow 0.3s;
}

.project:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.project h3 {
    color: #2563eb;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.project p {
    color: #64748b;
}

#research ul {
    list-style: none;
    margin-top: 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

#research li {
    padding: 1rem;
    background: #f1f5f9;
    border-radius: 8px;
    border-left: 4px solid #2563eb;
    color: #334155;
    font-weight: 500;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 500px;
    margin-top: 2rem;
}

.contact-form input,
.contact-form textarea {
    padding: 1rem;
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    color: #1a1a1a;
    font-family: inherit;
    transition: border-color 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #2563eb;
}

.contact-form button {
    padding: 1rem;
    background: #2563eb;
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.contact-form button:hover {
    background: #1d4ed8;
}

footer {
    padding: 3rem 2rem;
    background: #f8fafc;
    border-top: 1px solid #e2e8f0;
    color: #64748b;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.social-links {
    display: flex;
    gap: 0.5rem;
}

.social-links a {
    color: #64748b;
    text-decoration: none;
    transition: all 0.3s;
    padding: 0.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-links a:hover {
    color: #2563eb;
    background: #e2e8f0;
}

.mission-section {
    text-align: center;
    max-width: 800px;
}

.mission-section h2 {
    text-align: center;
}

.mission-section p {
    font-size: 1.125rem;
    line-height: 1.7;
    color: #64748b;
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    nav {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    nav ul {
        gap: 1rem;
    }
    
    #research ul {
        grid-template-columns: 1fr;
    }
}