:root {
    --primary-color: #0969da;
    --secondary-color: #57606a;
    --dark-bg: #0d1117;
    --light-bg: #161b22;
    --border-color: #30363d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --accent: #58a6ff;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
}

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

/* Navigation */
.navbar {
    background-color: var(--light-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent);
}

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

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--accent);
}

/* Hero Section */
.hero {
    padding: 120px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--light-bg) 0%, var(--dark-bg) 100%);
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.hero-content p {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* CTA Button */
.cta-button {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.cta-button:hover {
    background-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(88, 166, 255, 0.3);
}

/* About Section */
.about {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.about h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--accent);
}

.about p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Projects Section */
.projects {
    padding: 80px 0;
}

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

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

.project-card {
    background-color: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.project-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 8px 24px rgba(9, 105, 218, 0.2);
    transform: translateY(-4px);
}

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

.project-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.project-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.project-link:hover {
    color: var(--accent);
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background-color: var(--light-bg);
    text-align: center;
}

.contact h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.contact p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Footer */
.footer {
    background-color: var(--light-bg);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    text-align: center;
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .about h2,
    .projects h2,
    .contact h2 {
        font-size: 2rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }
}