/* ============================================================
   Personal academic site — shared stylesheet
   Palette:  ink #14262b | sea #2f6f6b | sage #a5cca7 | ember #cb4f00
   ============================================================ */

:root {
  --ink:      #14262b;
  --ink-soft: #47585d;
  --sea:      #2f6f6b;
  --sage:     #a5cca7;
  --sage-pale:#e4efe4;
  --ember:    #cb4f00;
  --paper:    #fbfaf7;
  --rule:     rgba(20, 38, 43, 0.12);

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

  --measure: 68ch;
  --wide:    1120px;
  --pad:     2rem;
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.2rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; border: 0; }

::selection { background: var(--sage); color: var(--ink); }

/* ---------- Typography ---------- */

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.15;
  color: var(--ink);
  margin: 0 0 0.5em;
  text-rendering: optimizeLegibility;
}

h1 { font-size: clamp(2.4rem, 5.5vw, 3.6rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.25rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1.1em; max-width: var(--measure); }

a {
  color: var(--sea);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 111, 107, 0.35);
  transition: color 0.15s ease, border-color 0.15s ease;
}
a:hover { color: var(--ember); border-bottom-color: var(--ember); }

.eyebrow {
  font-family: var(--sans);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ember);
  margin: 0 0 0.9rem;
}

.lede { font-size: 1.2rem; color: var(--ink-soft); }

.muted { color: var(--ink-soft); }

.footnote {
  font-size: 0.85rem;
  color: var(--ink-soft);
  max-width: var(--measure);
}

/* ---------- Layout helpers ---------- */

.wrap {
  width: 100%;
  max-width: var(--wide);
  margin-inline: auto;
  padding-inline: var(--pad);
}

section { padding-block: clamp(3rem, 7vw, 5.5rem); }

section + section { border-top: 1px solid var(--rule); }

.section-tint { background: var(--sage-pale); }

.skip-link {
  position: absolute;
  left: -9999px;
}
.skip-link:focus {
  left: 1rem; top: 1rem;
  z-index: 100;
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 0.9rem;
  border-radius: 4px;
}

/* ---------- Header / nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 250, 247, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--rule);
}

.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 2rem;
  padding-block: 0.9rem;
}

.brand {
  font-family: var(--serif);
  font-size: 1.2rem;
  color: var(--ink);
  border: 0;
  white-space: nowrap;
}
.brand:hover { color: var(--ember); }
.brand small {
  display: block;
  font-family: var(--sans);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: 0.15rem;
}

.site-nav {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
}

.site-nav a {
  font-size: 0.8rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--ink-soft);
  border: 0;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover { color: var(--ink); border-bottom-color: var(--sage); }
.site-nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--ember);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: clamp(214px, 35vh, 348px);
  display: flex;
  align-items: flex-end;
  background: var(--ink) center/cover no-repeat;
  border-bottom: 1px solid var(--rule);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(20, 38, 43, 0.15) 0%,
    rgba(20, 38, 43, 0.72) 100%
  );
}

.hero .wrap {
  position: relative;
  z-index: 1;
  padding-block: clamp(2.5rem, 6vw, 4rem);
}

.hero h1 { color: #fff; margin-bottom: 0.35em; }
.hero p {
  color: rgba(255, 255, 255, 0.86);
  font-size: 1.1rem;
  max-width: 56ch;
  margin: 0;
}
.hero .eyebrow { color: var(--sage); }

.hero-credit {
  position: absolute;
  right: var(--pad);
  bottom: 0.6rem;
  z-index: 2;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.6);
}
.hero-credit a { color: inherit; border-bottom-color: rgba(255,255,255,0.3); }

/* ---------- Split blocks (image + text) ---------- */

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.split.reverse > .split-media { order: 2; }

.split-wide-media { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }

.split-media img { border-radius: 3px; }

.figure-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-top: 1.5rem;
}
.figure-row img { width: 100%; border-radius: 3px; }
.figure-row figcaption {
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-top: 0.6rem;
  line-height: 1.45;
}

.thread-text {
  max-width: var(--measure);
  margin-top: 2rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.cv-hero {
  min-height: 100vh;
  align-items: flex-start;
}
.cv-hero .tag {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}
.cv-hero a.tag:hover {
  color: var(--ink);
  background: #fff;
}

.thread-video {
  aspect-ratio: 3272 / 1536;
  width: 100%;
  object-fit: contain;
  border-radius: 3px;
  background: var(--sage-pale);
}

.split-media figcaption {
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-top: 0.6rem;
  line-height: 1.45;
}

.portrait {
  aspect-ratio: 1 / 1 ;
  object-fit: cover;
  width: 100%;
  background: var(--sage-pale);
}

/* ---------- Card grid (research areas) ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(1.5rem, 3.5vw, 2.5rem);
  margin-top: 2.5rem;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  border: 0;
  color: inherit;
}
.card:hover { color: inherit; }

.card-thumb {
  aspect-ratio: 1 / 1;
  width: 100%;
  object-fit: cover;
  background: var(--sage-pale);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.card:hover .card-thumb {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(20, 38, 43, 0.16);
}

.card h3 { margin: 0; }
.card:hover h3 { color: var(--ember); }
.card p { font-size: 0.95rem; color: var(--ink-soft); margin: 0; }

/* ---------- Publications ---------- */

.pub-list { list-style: none; margin: 2rem 0 0; padding: 0; }

.pub-year-group {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  gap: 0.5rem 1.5rem;
  padding-block: 1.5rem;
  border-top: 1px solid var(--rule);
}

.pub-year {
  font-family: var(--serif);
  font-size: 1.2rem;
  color: var(--ink-soft);
  padding-top: 0.1rem;
}

.pub-sublist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.pub-title {
  font-family: var(--serif);
  font-size: 1.15rem;
  line-height: 1.3;
  margin: 0 0 0.35rem;
  max-width: var(--measure);
}

.pub-authors {
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin: 0 0 0.35rem;
  max-width: var(--measure);
}
.pub-authors .me { color: var(--ink); font-weight: 600; }

.pub-venue { font-size: 0.9rem; font-style: italic; color: var(--ink-soft); margin: 0; }

.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.6rem;
}

.tag {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--rule);
  border-radius: 100px;
  color: var(--ink-soft);
  background: transparent;
}
a.tag:hover {
  color: var(--paper);
  background: var(--sea);
  border-color: var(--sea);
}

/* Highlight cards */
.highlight-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2.5rem;
}

.highlight {
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.highlight img {
  aspect-ratio: 16 / 10;
  object-fit: cover;
  width: 100%;
  background: var(--sage-pale);
}

.highlight img.fig4-thumb {
  aspect-ratio: 889 / 693;
  width: 889px;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.highlight-body { padding: 1.25rem 1.4rem 1.5rem; }
.highlight-body h3 { font-size: 1.1rem; margin-bottom: 0.4rem; }
.highlight-body p { font-size: 0.92rem; color: var(--ink-soft); margin: 0 0 0.8rem; }

/* ---------- CV ---------- */

.cv-entry {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  gap: 0.4rem 1.5rem;
  padding-block: 1.2rem;
  border-top: 1px solid var(--rule);
}

.cv-date {
  font-size: 0.9rem;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
  padding-top: 0.15rem;
}

.cv-entry h3 { margin: 0 0 0.2rem; font-size: 1.1rem; }
.cv-entry p { margin: 0; font-size: 0.95rem; color: var(--ink-soft); }

/* ---------- Gallery (personal page) ---------- */

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 2.5rem;
}

.gallery figure { margin: 0; }
.gallery img {
  aspect-ratio: 3 / 2;
  object-fit: cover;
  width: 100%;
  border-radius: 3px;
  background: var(--sage-pale);
}
.gallery figcaption {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-top: 0.45rem;
}

/* ---------- Contact / footer ---------- */

.contact-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}
.contact-list dt {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.site-footer {
  border-top: 1px solid var(--rule);
  padding-block: 2.5rem;
  font-size: 0.85rem;
  color: var(--ink-soft);
  background: var(--sage-pale);
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2rem;
  justify-content: space-between;
  align-items: center;
}
.site-footer a { color: var(--ink-soft); }

/* ---------- Responsive ---------- */

@media (max-width: 780px) {
  :root { --pad: 1.25rem; }

  .split { grid-template-columns: 1fr; }
  .split.reverse > .split-media { order: 0; }

  .figure-row { grid-template-columns: 1fr; }

  .split-media .portrait { max-width: 320px; }

  .pub-year-group { grid-template-columns: 1fr; gap: 0.35rem; }
  .pub-year { font-size: 0.95rem; }

  .cv-entry { grid-template-columns: 1fr; gap: 0.25rem; }

  .site-header .wrap { padding-block: 0.75rem; }
  .site-nav { gap: 1rem; width: 100%; margin-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ---------- Print (CV) ---------- */

@media print {
  .site-header, .site-footer, .hero { display: none; }
  body { background: #fff; font-size: 11pt; }
  section { padding-block: 0.5rem; border: 0; }
  a { color: #000; border: 0; }
}