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


body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
    background: #fff;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #1a1a1a;
    font-weight: 700;
}

h2 {
    font-size: 1.75rem;
    margin-top: 3rem;
    margin-bottom: 1rem;
    color: #1a1a1a;
    border-bottom: 2px solid #e5e7eb;
    padding-bottom: 0.5rem;
}

h3 {
    font-size: 1.25rem;
    margin-top: 2rem;
    margin-bottom: 0.5rem;
    color: #1a1a1a;
    font-weight: 600;
}

h4 {
    font-size: 1rem;
    color: #6b7280;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

p {
    margin-bottom: 1rem;
    color: #4b5563;
}

a {
    color: #2563eb;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

hr {
    border: none;
    border-top: 1px solid #e5e7eb;
    margin: 2rem 0;
}

ul {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.5rem;
    color: #4b5563;
}

#masthead {
    font-size: 2.5rem;
    font-weight: 600;
    text-align: left;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.tech-section {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
}

.tech-category {
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 0.25rem;
}

.tech-list {
    color: #4b5563;
    line-height: 1.8;
}

.job-duration {
    color: #6b7280;
    font-size: 0.95rem;
}

.project-tech {
    color: #6b7280;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.footer {
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #e5e7eb;
    color: #6b7280;
    font-size: 0.875rem;
}

.intro {
    font-size: 2.0rem;
    margin-bottom: 1.5rem;
    color: #4b5563;
}

.contact-section ul {
    list-style: none;
    padding: 0;
}

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

@media (max-width: 768px) {
    body {
        padding: 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }
}