/* Warm layer (2026-09-25) — loaded last on every main-site page.
 * Goal: less "template", more "person". Takes its colours from the Louvre painting on the
 * cover and from the cream Reading Notes pages: warm dark brown / paper, one ochre accent,
 * serif headings, no monospace labels, no glows, no card chrome.
 * Rollback = delete the <link ... warm.css> line from each page (styles.css and hallmark.css
 * are untouched underneath). Dark stays the default; the light/dark toggle still works. */

:root {
  color-scheme: dark;
  --bg: #15110d; --surface: #1d1813; --surface-raised: #26201a;
  --ink: #ece4d6; --muted: #ada28f; --rule: #352c23; --soft: #211b15;
  --accent: #d9ae62; --accent-ink: #1a130a; --violet: #d9ae62;
  --header: rgba(21, 17, 13, .95);
  --grid: transparent; --glow: transparent; --violet-glow: transparent;
  --link-line: rgba(217, 174, 98, .45);
  /* hallmark / tokens.css names, so subpages follow the same palette */
  --color-paper: var(--bg); --color-surface: var(--surface); --color-ink: var(--ink);
  --color-muted: var(--muted); --color-rule: var(--rule); --color-accent: var(--accent);
  --color-accent-ink: var(--accent-ink); --color-focus: var(--accent);
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, "TeX Gyre Pagella",
           "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", "Microsoft YaHei", serif;
  --sans: "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial,
          "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-display: var(--serif); --font-body: var(--sans); --mono: var(--sans);
}
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #faf8f3; --surface: #fffdf9; --surface-raised: #f3efe6;
  --ink: #1b1a17; --muted: #625c52; --rule: #e4ded2; --soft: #f3efe6;
  --accent: #8a6a12; --accent-ink: #ffffff; --violet: #8a6a12;
  --header: rgba(250, 248, 243, .95);
  --link-line: rgba(138, 106, 18, .4);
  --color-paper: var(--bg); --color-surface: var(--surface); --color-ink: var(--ink);
  --color-muted: var(--muted); --color-rule: var(--rule); --color-accent: var(--accent);
  --color-accent-ink: var(--accent-ink); --color-focus: var(--accent);
}

/* ---------- base ---------- */
body { font-family: var(--sans); background-image: none; }
body::before { display: none; }
h1, h2, h3, .cover-title, .wordmark { font-family: var(--serif); }
h1, h2, h3 { letter-spacing: -.005em; }
h2 { font-weight: 500; }
h3 { font-weight: 600; }
main p a, main li a, main dd a { text-decoration: underline; text-decoration-color: var(--link-line); text-decoration-thickness: 1px; text-underline-offset: .22em; }
main p a:hover, main li a:hover { text-decoration-color: currentColor; }

/* Monospace uppercase micro-labels → plain small text */
.eyebrow, .date, .news-date, .honors-list time, dt, .entry-meta, .status, .cover-credit,
.project-facts, .topic-heading > p, footer, .visual-heading, .visual-footer {
  font-family: var(--sans); letter-spacing: 0; text-transform: none;
}
.eyebrow { color: var(--muted); font-size: 13px; margin-bottom: 12px; }
.eyebrow a { color: inherit; }
.signal-dot, .small-monogram, .name-period, .section-number { display: none; }
.data-table thead th { text-transform: none; letter-spacing: 0; }

/* ---------- header ---------- */
.site-header .wordmark > span:last-child { display: inline; }
.wordmark { font-size: 18px; font-weight: 600; letter-spacing: 0; }
nav { font-size: 14px; }
nav .nav-cv { border: 0; padding: 8px 0; border-radius: 0; color: var(--muted); }
nav a[aria-current="page"], nav a[aria-current="location"] { color: var(--ink); }

/* ---------- cover (homepage painting) ---------- */
.cover { background-color: #0f0b08; }
.cover::after {
  background:
    linear-gradient(90deg, rgba(18, 12, 6, .45) 0%, rgba(18, 12, 6, .28) 26%, rgba(18, 12, 6, .1) 46%, rgba(18, 12, 6, 0) 62%),
    linear-gradient(180deg, rgba(18, 12, 6, .45) 0%, rgba(18, 12, 6, 0) 15%, rgba(18, 12, 6, 0) 84%, rgba(18, 12, 6, .45) 100%);
}
@media (max-width: 760px) and (orientation: portrait) {
  .cover::after { background: linear-gradient(180deg, rgba(18, 12, 6, .62) 0%, rgba(18, 12, 6, .42) 22%, rgba(18, 12, 6, .12) 44%, rgba(18, 12, 6, 0) 62%, rgba(18, 12, 6, .38) 100%); }
}
/* Header sits on the painting until you scroll past it: always light text there, in both themes. */
body.has-cover:not(.is-past-cover) .site-header :is(nav a, .wordmark, .icon-button, .lang-switch, .lang-select) { color: #f1e8d8; }
body.has-cover:not(.is-past-cover) .site-header nav a:hover { color: #fff; }
body.has-cover:not(.is-past-cover) .lang-switch { border-color: rgba(241, 232, 216, .35); }
.cover-title { font-weight: 500; letter-spacing: -.01em; }
.cover-sub-typed { color: #8cc8ff; }
.cover-caret { background: #8cc8ff; box-shadow: none; }
.cover-arrow { border-color: rgba(241, 232, 216, .35); background: rgba(18, 12, 6, .3); color: #f1e8d8; }
.cover-arrow:hover { border-color: #f1e8d8; color: #fff; }
.cover-credit { font-size: 11px; color: rgba(241, 232, 216, .5); }

/* ---------- homepage body ---------- */
body.has-cover .site-header, body.has-cover main, body.has-cover footer { width: min(1040px, calc(100% - 96px)); }
.portfolio-intro { padding-bottom: 32px; }
.hero { display: block; min-height: 0; padding: 80px 0 48px; }
.hero-copy { max-width: 700px; }
.hero h1, h1#name { font-size: clamp(40px, 5vw, 58px); font-weight: 500; line-height: 1.1; letter-spacing: -.01em; margin-bottom: 20px; }
.affiliation { font-size: 16px; line-height: 1.7; margin-bottom: 28px; }
.affiliation span { font-size: 15px; }
.intro { color: var(--ink); max-width: none; font-size: 17px; line-height: 1.8; }
.intro strong { font-weight: 600; }
.hero-links { display: block; margin-top: 24px; color: var(--muted); font-size: 15px; }

.content-section { grid-template-columns: 200px minmax(0, 1fr); gap: 40px; padding: 48px 0; }
.news-section { border-top: 1px solid var(--rule); }
.section-heading { position: static; }
.section-heading h2, .news-section h2 { font-size: 25px; letter-spacing: 0; margin: 0; }
.section-body { max-width: 760px; }
.news-list li { grid-template-columns: 110px minmax(0, 1fr); gap: 20px; }
.news-date, .date, .honors-list time { color: var(--muted); font-size: 14px; font-variant-numeric: tabular-nums; }
.news-list p, .plain-note { font-size: 16px; line-height: 1.8; margin: 0; }

h3 { font-size: 19px; line-height: 1.35; }
.entry p:not(.entry-meta):not(.keywords), .compact-list p, dd { color: var(--ink); font-size: 15px; line-height: 1.8; opacity: .9; }
.entry-meta { font-size: 14px; }
.entry-heading .date { margin-bottom: 6px; }

#research .entry { padding: 0; background: none; border: 0; border-radius: 0; overflow: visible; transition: none; }
#research .entry::before { display: none; }
#research .entry:hover { transform: none; border-color: var(--rule); }
#research .entry + .entry { margin-top: 32px; padding-top: 32px; border-top: 1px solid var(--rule); }
.keywords { display: none; }

.manuscript { border-left: 0; padding: 0; }
.status { border: 0; background: none; padding: 0; color: var(--muted); }

#education .section-body { border-left: 0; padding-left: 0; }
#education .entry::before { display: none; }

.honors-list li { grid-template-columns: 90px minmax(0, 1fr); font-size: 15px; }
.honors-list small { font-size: 13px; }
.skills-list > div { grid-template-columns: 150px minmax(0, 1fr); }
dt { color: var(--ink); font-size: 14px; font-weight: 600; line-height: 1.9; }

.visitor-section { text-align: left; padding: 48px 0; }
.visitor-section h2 { font-size: 25px; margin-bottom: 20px; }
.visitor-map { margin: 0; border-radius: 4px; }

footer { font-size: 13px; }

/* ---------- buttons / cards used on subpages ---------- */
.button { background: transparent; color: var(--ink); border: 1px solid var(--rule); border-radius: 3px; font-weight: 500; }
.button:hover { border-color: var(--accent); color: var(--accent); box-shadow: none; transform: none; }
.project-cover { background: var(--surface); }
.project-card, .social-card, .source-files, .table-wrap, .source-code, .project-gallery img { border-radius: 4px; }
.creative-card { background: var(--surface); border-radius: 4px; }
.portfolio-intro h1, .project-detail .portfolio-intro h1 { font-size: clamp(36px, 5vw, 56px); font-weight: 500; letter-spacing: -.01em; }
.topic-heading h2, .project-prose h2, .project-gallery h2 { font-size: 26px; }
.project-scope { border-left-color: var(--rule); }
.empty-viewfinder { background: var(--surface); }
.empty-viewfinder::before { border-color: var(--rule); opacity: 1; }
.empty-viewfinder span { font-family: var(--sans); letter-spacing: .1em; }
.source-code { color: var(--ink); font-family: Consolas, "SFMono-Regular", "Liberation Mono", monospace; }
.data-table td { font-family: inherit; font-variant-numeric: tabular-nums; }

.repo-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 32px; }
.repo-grid-followup { margin-top: 32px; }
.repo-card { min-width: 0; padding: 20px 0 22px; border-top: 1px solid var(--rule); }
.repo-card h3 { margin: 0 0 8px; font-size: clamp(18px, 2vw, 22px); line-height: 1.3; overflow-wrap: anywhere; }
.repo-card h3 a { color: var(--ink); text-decoration: none; }
.repo-card h3 a:hover { color: var(--accent); }
.repo-card p { margin: 0 0 12px; max-width: 60ch; color: var(--muted); font-size: 14px; line-height: 1.65; }
.repo-card .repo-tags { margin-bottom: 0; font-size: 12px; }
#tools .repo-grid { gap: 36px 32px; }
#tools .repo-card { padding: 0; border-top: 0; }
.repo-card-cover { display: block; margin-bottom: 16px; aspect-ratio: 1200 / 676; overflow: hidden; border-radius: 4px; background: var(--surface); }
.repo-card-cover img { display: block; width: 100%; height: 100%; object-fit: cover; }

@media (max-width: 1050px) {
  .content-section { grid-template-columns: 160px minmax(0, 1fr); gap: 28px; }
}
@media (max-width: 1050px) {
  body.has-cover .site-header, body.has-cover main, body.has-cover footer { width: calc(100% - 64px); }
}
@media (max-width: 760px) {
  .repo-grid { grid-template-columns: minmax(0, 1fr); }
  body.has-cover .site-header, body.has-cover main, body.has-cover footer { width: calc(100% - 40px); }
  .hero { padding: 48px 0 32px; }
  .intro { font-size: 16px; }
  .content-section { grid-template-columns: 1fr; gap: 16px; padding: 36px 0; }
  .news-list li, .honors-list li, .skills-list > div { grid-template-columns: 1fr; gap: 2px; }
  .wordmark { font-size: 17px; }
  nav { font-size: 13px; }
}
@media print {
  :root, :root[data-theme="light"] { --bg: #fff; --ink: #1b1a17; --muted: #555; --accent: #1b1a17; --rule: #ddd; }
}