:root {
    --bg: #fafaf6;
    --fg: #1a1a1a;
    --muted: #555555;
    --accent: #1a1a1a;
    --rule: #d8d4c8;

    --measure: 65ch;
    --space-1: 0.5rem;
    --space-2: 1rem;
    --space-3: 1.75rem;
    --space-4: 2.5rem;
    --space-5: 4rem;

    --serif: 'Iowan Old Style', Charter, Cambria, 'Liberation Serif', Georgia, serif;
    --sans:  -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --mono:  ui-monospace, 'SF Mono', Menlo, Consolas, 'Cascadia Code', 'JetBrains Mono', 'Liberation Mono', monospace;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #15171a;
        --fg: #e8e4d8;
        --muted: #9b9890;
        --accent: #e8e4d8;
        --rule: #2c2f34;
    }
}

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

html {
    font-size: 17px;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--sans);
    font-size: 1rem;
    line-height: 1.6;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--measure);
    margin: 0 auto;
    padding: var(--space-3) var(--space-2);
}

h1, h2 {
    font-family: var(--serif);
    font-weight: 600;
    line-height: 1.2;
    color: var(--fg);
    margin: 0 0 var(--space-2);
}

h1 {
    font-size: 2.4rem;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-1);
}

h2 {
    font-size: 1.4rem;
    margin-top: var(--space-3);
    margin-bottom: var(--space-2);
}

p {
    margin: 0 0 var(--space-2);
}

a {
    color: var(--accent);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.18em;
    text-decoration-color: var(--rule);
    transition: text-decoration-color 0.15s ease;
}

a:hover {
    text-decoration-color: var(--accent);
}

a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 2px;
}

header.hero {
    margin-bottom: var(--space-4);
}

header.hero .name {
    font-family: var(--serif);
    font-size: 2.6rem;
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin: 0 0 var(--space-2);
}

header.hero .thesis {
    font-family: var(--serif);
    font-size: 1.2rem;
    font-style: italic;
    color: var(--muted);
    line-height: 1.4;
    margin: 0 0 var(--space-1);
    max-width: 50ch;
}

header.hero .thesis-detail {
    font-family: var(--sans);
    font-size: 1.05rem;
    color: var(--fg);
    line-height: 1.55;
    margin: 0 0 var(--space-2);
    max-width: 60ch;
}

section {
    margin-bottom: var(--space-4);
}

.contact-email {
    font-family: var(--sans);
    font-size: 1.05rem;
    color: var(--fg);
    margin: 0 0 0.4rem;
    line-height: 1.5;
}

.contact-handles {
    font-family: var(--mono);
    font-size: 0.85em;
    color: var(--muted);
    margin: 0 0 var(--space-2);
    line-height: 1.5;
}

.contact-handles .sep {
    color: var(--rule);
    margin: 0 0.5em;
}

.contact-handles a {
    color: var(--muted);
    text-decoration-color: var(--rule);
}

.contact-handles a:hover {
    color: var(--fg);
    text-decoration-color: var(--fg);
}

.email-display {
    color: var(--fg);
    user-select: none;
}

.email-at {
    color: var(--muted);
    font-style: italic;
}

.email-cipher {
    color: inherit;
    user-select: none;
}

.copy-link {
    font-family: var(--sans);
    font-size: 0.85em;
    background: transparent;
    border: 0;
    padding: 0;
    margin-left: 0.6em;
    color: var(--muted);
    cursor: pointer;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.22em;
    text-decoration-color: var(--rule);
    transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

.copy-link:hover {
    color: var(--fg);
    text-decoration-color: var(--fg);
}

.copy-link:focus-visible {
    outline: 2px solid var(--fg);
    outline-offset: 2px;
    border-radius: 2px;
}

.copy-link.copied {
    color: var(--muted);
    text-decoration: none;
    cursor: default;
}

footer.disclosure {
    margin-top: var(--space-5);
    padding-top: var(--space-2);
    border-top: 1px solid var(--rule);
    font-family: var(--mono);
    font-size: 0.8rem;
    color: var(--muted);
    line-height: 1.5;
}

footer.disclosure p {
    margin: 0 0 0.5rem;
}

@media print {
    :root {
        --bg: white;
        --fg: black;
        --muted: #444;
        --accent: black;
        --rule: #888;
    }
    body { font-size: 11pt; }
    footer.disclosure { display: none; }
    a { text-decoration: none; color: var(--fg); }
}

@media (max-width: 600px) {
    html { font-size: 16px; }
    .container { padding: var(--space-2); }
    header.hero .name { font-size: 2rem; }
    header.hero .thesis { font-size: 1.05rem; }
    header.hero .thesis-detail { font-size: 1rem; }
    h2 { font-size: 1.25rem; margin-top: var(--space-2); }
    .contact-email { font-size: 1rem; }
    .contact-handles .sep { display: block; height: 0; margin: 0; visibility: hidden; }
    .contact-handles a { display: inline-block; }
}