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

:root {
    --bg: #fafafa;
    --text: #1a1a1a;
    --muted: #666;
    --accent: #333;
    --border: #e0e0e0;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #111;
        --text: #f0f0f0;
        --muted: #999;
        --accent: #ccc;
        --border: #333;
    }
}

html {
    font-size: 18px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

main {
    max-width: 600px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

header {
    margin-bottom: 4rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 0.25rem;
}

.tagline {
    color: var(--muted);
    font-size: 1.1rem;
}

h2 {
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--muted);
    margin-bottom: 1rem;
}

section {
    margin-bottom: 3rem;
}

.about p {
    max-width: 45ch;
}

.projects ul {
    list-style: none;
}

.projects li {
    border-bottom: 1px solid var(--border);
}

.projects li:first-child {
    border-top: 1px solid var(--border);
}

.projects a {
    display: block;
    padding: 1rem 0;
    text-decoration: none;
    color: inherit;
    transition: opacity 0.2s;
}

.projects a:hover {
    opacity: 0.7;
}

.projects strong {
    display: block;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.projects span {
    display: block;
    color: var(--muted);
    font-size: 0.9rem;
}

.projects em {
    display: inline-block;
    margin-top: 0.5rem;
    font-style: normal;
    font-size: 0.75rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact a {
    color: var(--text);
    text-decoration: none;
    border-bottom: 1px solid var(--border);
    transition: border-color 0.2s;
}

.contact a:hover {
    border-color: var(--text);
}

footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

footer p {
    color: var(--muted);
    font-size: 0.85rem;
}