:root {
  color-scheme: light dark;

  /* Light (default) — Cyberpunk Retrowave palette, light treatment */
  --bg: #f7fcfe;
  --fg: #01012b;
  --fg-muted: #51707f;
  --accent: #005678;
  --accent-dim: #ff2a6d;
  --rule: #d3e3ea;
  --code-bg: #e6f4f8;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Source Serif Pro", Georgia, serif;

  --measure: 42rem;
  --pad-x: 1.25rem;
}

/* Dark mode — neon-on-navy, only for visitors whose OS prefers dark */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #01012b;
    --fg: #d1f7ff;
    --fg-muted: #7f9ec4;
    --accent: #05d9e8;
    --accent-dim: #ff2a6d;
    --rule: #005678;
    --code-bg: #11143d;
  }
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}
a:hover,
a:focus-visible { color: var(--accent-dim); text-decoration-thickness: 2px; }

.skip-link {
  position: absolute;
  left: -9999px;
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
  background: var(--bg);
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--accent);
  z-index: 10;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--rule);
}
.site-header__inner {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 1.25rem var(--pad-x);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
}
.site-name {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: 0.01em;
}
.site-name:hover { color: var(--accent); }

/* Nav */
.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
}
.site-nav a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.95rem;
}
.site-nav a:hover { color: var(--accent); }
.site-nav a[aria-current="page"] {
  color: var(--fg);
  border-bottom: 2px solid var(--accent);
  padding-bottom: 0.1rem;
}

/* Main */
.site-main {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2.5rem var(--pad-x) 4rem;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.25;
  color: var(--fg);
}
h1 {
  font-size: 2rem;
  margin: 0.5rem 0 1.25rem;
  letter-spacing: -0.01em;
}
h2 {
  font-size: 1.375rem;
  margin: 2.75rem 0 0.75rem;
  padding-top: 0.25rem;
}
h3 {
  font-size: 1.1rem;
  margin: 2rem 0 0.5rem;
}

p { margin: 0 0 1.1em; }

ul, ol { padding-left: 1.25rem; }
li { margin-bottom: 0.35em; }

hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 3rem 0;
}

blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.25rem 0 0.25rem 1rem;
  margin: 1.5rem 0;
  color: var(--fg-muted);
  font-style: italic;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

/* Publication/CV list styling */
.site-main p + p { margin-top: 0; }

/* Publications list — semantic list of references */
.pubs {
  list-style: none;
  padding-left: 0;
}
.pubs > li {
  margin-bottom: 1.25rem;
  padding-left: 1rem;
  border-left: 2px solid var(--rule);
  line-height: 1.55;
}
.pubs strong { font-weight: 600; }
.pubs em { color: var(--fg-muted); }
.pubs .meta { display: block; font-size: 0.9rem; color: var(--fg-muted); margin-top: 0.15rem; }
.pubs .meta a { color: var(--fg-muted); text-decoration-color: var(--rule); }
.pubs .meta a:hover { color: var(--accent); text-decoration-color: var(--accent); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--rule);
  margin-top: 3rem;
}
.site-footer__inner {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 1.5rem var(--pad-x) 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.9rem;
  color: var(--fg-muted);
}
.site-footer ul.social {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
}
.site-footer ul.social a {
  color: var(--fg-muted);
  text-decoration: none;
}
.site-footer ul.social a:hover { color: var(--accent); }
.site-footer .copy { margin: 0; }

/* Small-screen tweaks */
@media (max-width: 480px) {
  body { font-size: 16.5px; }
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.25rem; margin-top: 2.25rem; }
  .site-header__inner { padding: 1rem var(--pad-x); }
}

/* Respect reduced motion (no animation used, but keep as guard) */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}