/* Roi Poranne — personal site. Plain CSS, no build step. */

:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --ink: #1c1d21;
  --ink-2: #4a4d55;
  --ink-3: #777b85;
  --rule: #e6e3dc;
  --accent: #b4441b;
  --accent-ink: #ffffff;
  --accent-soft: #f6e7df;
  --chip: #f1eee8;
  --shadow: 0 1px 2px rgba(20, 20, 30, .05), 0 4px 16px rgba(20, 20, 30, .05);
  --serif: "Source Serif 4", "Iowan Old Style", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --maxw: 1080px;
  --radius: 10px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #131417;
    --surface: #1b1c20;
    --ink: #ecebe8;
    --ink-2: #b9b8b4;
    --ink-3: #8c8b88;
    --rule: #2c2d32;
    --accent: #f08a5d;
    --accent-ink: #141414;
    --accent-soft: #3a2519;
    --chip: #25262b;
    --shadow: none;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #131417;
  --surface: #1b1c20;
  --ink: #ecebe8;
  --ink-2: #b9b8b4;
  --ink-3: #8c8b88;
  --rule: #2c2d32;
  --accent: #f08a5d;
  --accent-ink: #141414;
  --accent-soft: #3a2519;
  --chip: #25262b;
  --shadow: none;
  color-scheme: dark;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16.5px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

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

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--rule);
}
.nav .wrap { display: flex; align-items: center; gap: 24px; height: 60px; }
.nav .brand { font: 600 18px/1 var(--serif); color: var(--ink); letter-spacing: -.01em; }
.nav .brand:hover { text-decoration: none; }
.nav ul { display: flex; gap: 22px; list-style: none; margin: 0 0 0 auto; padding: 0; }
.nav ul a { color: var(--ink-2); font-size: 14.5px; font-weight: 500; }
.nav ul a:hover, .nav ul a[aria-current="page"] { color: var(--ink); text-decoration: none; }
.theme-toggle {
  border: 1px solid var(--rule); background: transparent; color: var(--ink-2);
  width: 34px; height: 34px; border-radius: 50%; cursor: pointer; display: grid; place-items: center;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink-3); }
.theme-toggle svg { width: 16px; height: 16px; }

/* ---------- Hero ---------- */
.hero { padding: 64px 0 40px; }
.hero .wrap { display: grid; grid-template-columns: 220px 1fr; gap: 48px; align-items: center; }
.hero img.portrait {
  width: 220px; height: 220px; object-fit: cover; border-radius: 18px;
  box-shadow: var(--shadow);
}
.hero h1 {
  font: 600 clamp(36px, 5vw, 52px)/1.05 var(--serif); letter-spacing: -.02em; margin: 0 0 12px;
}
.hero .role { font-size: 18px; color: var(--ink-2); margin: 0 0 4px; }
.hero .role strong { color: var(--ink); font-weight: 600; }
.hero .tagline { margin: 18px 0 0; font: italic 400 19px/1.5 var(--serif); color: var(--ink-2); max-width: 46ch; }

.links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.links a {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 12px; border-radius: 999px; font-size: 14px; font-weight: 500;
  color: var(--ink-2); background: var(--chip); border: 1px solid transparent;
}
.links a:hover { text-decoration: none; color: var(--ink); border-color: var(--rule); }
.links svg { width: 15px; height: 15px; flex: none; }

/* ---------- Sections ---------- */
section { padding: 44px 0; }
section + section { border-top: 1px solid var(--rule); }
.eyebrow {
  font-size: 12.5px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 8px;
}
h2 { font: 600 30px/1.2 var(--serif); letter-spacing: -.015em; margin: 0 0 22px; }
h3 { font: 600 18px/1.35 var(--sans); margin: 0 0 6px; }
.lede { font-size: 18px; color: var(--ink-2); max-width: 68ch; }
.prose p { max-width: 70ch; color: var(--ink-2); }
.prose p strong { color: var(--ink); }
.prose p.eyebrow { color: var(--accent); }
.pub.flash { animation: flash 2.4s ease-out; }
@keyframes flash { from { background: var(--accent-soft); } to { background: transparent; } }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.section-head .more { font-size: 14.5px; font-weight: 500; }

/* ---------- Research themes ---------- */
.themes { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; }
.theme {
  background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
}
.theme img { width: 100%; aspect-ratio: 16/10; object-fit: cover; background: #fff; }
.theme div { padding: 14px 16px 16px; }
.theme p { margin: 0; color: var(--ink-2); font-size: 14.5px; line-height: 1.55; }

/* ---------- News ---------- */
.news { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.news li { display: grid; grid-template-columns: 96px 1fr; gap: 16px; color: var(--ink-2); }
.news time { color: var(--ink-3); font-size: 14px; font-variant-numeric: tabular-nums; padding-top: 1px; }

/* ---------- Publications ---------- */
.pubs { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.pub {
  display: grid; grid-template-columns: 168px 1fr; gap: 20px;
  padding: 14px; margin: 0 -14px; border-radius: var(--radius);
}
.pub:hover { background: var(--surface); box-shadow: var(--shadow); }
.pub .thumb {
  width: 168px; aspect-ratio: 16/10; border-radius: 8px; overflow: hidden;
  background: var(--chip); border: 1px solid var(--rule);
}
.pub .thumb img { width: 100%; height: 100%; object-fit: cover; background: #fff; }
.pub .thumb.empty { display: grid; place-items: center; color: var(--ink-3); font: 600 13px var(--sans); letter-spacing: .04em; }
.pub h3 { font-size: 16.5px; margin-bottom: 3px; }
.pub h3 a { color: var(--ink); }
.pub .authors { margin: 0; font-size: 14.5px; color: var(--ink-2); }
.pub .authors .me { color: var(--ink); font-weight: 600; }
.pub .venue { margin: 2px 0 0; font-size: 14.5px; color: var(--ink-3); font-style: italic; }
.pub .badges { display: inline-flex; gap: 6px; margin-left: 6px; vertical-align: 1px; }
.badge {
  font: 600 11px/1 var(--sans); letter-spacing: .04em; text-transform: uppercase; font-style: normal;
  padding: 4px 7px; border-radius: 5px; background: var(--accent-soft); color: var(--accent);
}
.pub .actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 9px; }
.pub .actions a, .pub .actions button {
  font: 500 12.5px/1 var(--sans); padding: 6px 10px; border-radius: 6px; cursor: pointer;
  color: var(--ink-2); background: transparent; border: 1px solid var(--rule);
}
.pub .actions a:hover, .pub .actions button:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }
.pub pre.bib {
  display: none; margin: 10px 0 0; padding: 12px 14px; border-radius: 8px; overflow-x: auto;
  background: var(--chip); color: var(--ink-2); font: 12.5px/1.5 ui-monospace, "Cascadia Code", Menlo, monospace;
  white-space: pre;
}
.pub.show-bib pre.bib { display: block; }

.year-group { display: grid; grid-template-columns: 80px 1fr; gap: 12px; padding: 18px 0; border-top: 1px solid var(--rule); }
.year-group:first-of-type { border-top: 0; }
.year-group > h2 { font-size: 22px; margin: 14px 0 0; color: var(--ink-3); position: sticky; top: 76px; align-self: start; }

.toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 4px 0 18px; }
.toolbar input[type="search"] {
  flex: 1 1 260px; min-width: 0; padding: 10px 14px; border-radius: 8px; font: inherit; font-size: 15px;
  border: 1px solid var(--rule); background: var(--surface); color: var(--ink);
}
.toolbar input[type="search"]:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chips button {
  font: 500 13.5px/1 var(--sans); padding: 8px 12px; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--rule); background: transparent; color: var(--ink-2);
}
.chips button[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.count { color: var(--ink-3); font-size: 14px; }

/* ---------- Lab / roles ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; }
.card {
  background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius);
  padding: 20px 22px; box-shadow: var(--shadow);
}
.card p { margin: 0; color: var(--ink-2); font-size: 15px; }
.card .eyebrow { font-size: 11.5px; }

.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 28px; }
.list-plain { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; color: var(--ink-2); font-size: 15px; }
.list-plain .when { color: var(--ink-3); font-variant-numeric: tabular-nums; margin-right: 6px; }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--rule); padding: 28px 0 48px; color: var(--ink-3); font-size: 14px; }
footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }

/* ---------- Small screens ---------- */
@media (max-width: 760px) {
  .wrap { padding: 0 16px; }
  .nav ul { display: none; }
  .nav .theme-toggle { margin-left: auto; }
  .hero { padding: 36px 0 24px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 22px; }
  .hero img.portrait { width: 132px; height: 132px; border-radius: 14px; }
  .pub { grid-template-columns: 96px 1fr; gap: 14px; padding: 12px 8px; margin: 0 -8px; }
  .pub .thumb { width: 96px; }
  .year-group { grid-template-columns: 1fr; gap: 0; }
  .year-group > h2 { position: static; margin: 0 0 4px; }
  .news li { grid-template-columns: 1fr; gap: 0; }
}

@media print {
  .nav, .toolbar, .pub .actions, .theme-toggle { display: none !important; }
  body { background: #fff; color: #000; }
}