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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
}

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

/* Navigation */
nav {
    background: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

nav h1 {
    font-size: 1.5rem;
    color: #2563eb;
}

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

nav a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero Section */
#hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 100px 20px;
    text-align: center;
}

#hero h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.tagline {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 30px;
    background: white;
    color: #667eea;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

/* Sections */
section {
    padding: 80px 20px;
}

section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
}

#about {
    background: #f9fafb;
}

#about p {
    max-width: 800px;
    margin: 0 auto 1rem auto;
    font-size: 1.1rem;
    text-align: center;
}

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

.project-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.project-card h3 {
    margin-bottom: 1rem;
    color: #2563eb;
}

.project-card a {
    color: #2563eb;
    text-decoration: none;
    font-weight: 500;
}

/* Contact */
#contact {
    background: #f9fafb;
}

.social-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.social-links a {
    padding: 10px 20px;
    background: #2563eb;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s;
}

.social-links a:hover {
    background: #1d4ed8;
}

/* Footer */
footer {
    background: #1f2937;
    color: white;
    text-align: center;
    padding: 2rem;
}

/* Responsive */
@media (max-width: 768px) {
    nav ul {
        gap: 1rem;
    }
    
    #hero h2 {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1.2rem;
    }
}