/* ==========================================================================
   bhuvad.github.io — personal academic site
   ========================================================================== */

:root {
  --bg: #faf9f7;
  --bg-card: #ffffff;
  --bg-accent-soft: #f0faf8;
  --text: #1c1917;
  --text-muted: #57534e;
  --text-faint: #a8a29e;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --border: #e7e5e4;
  --shadow: 0 1px 3px rgb(28 25 23 / 0.06), 0 4px 14px rgb(28 25 23 / 0.05);
  --dot-1: #14b8a6;
  --dot-2: #f59e0b;
  --dot-3: #f43f5e;
  --dot-4: #6366f1;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0c0b;
    --bg-card: #1a1815;
    --bg-accent-soft: #12201e;
    --text: #e9e6e2;
    --text-muted: #b0aaa2;
    --text-faint: #6f695f;
    --accent: #2dd4bf;
    --accent-strong: #5eead4;
    --border: #2b2825;
    --shadow: 0 1px 3px rgb(0 0 0 / 0.4), 0 4px 14px rgb(0 0 0 / 0.3);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: "Fraunces", Georgia, "Times New Roman", serif;
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 0.5rem;
}

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

.wrap { max-width: 68rem; margin: 0 auto; padding: 0 1.25rem; }
.wrap-narrow { max-width: 54rem; margin: 0 auto; padding: 0 1.25rem; }

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.5rem;
  flex-wrap: wrap;
  padding-top: 0.4rem;
  padding-bottom: 0.4rem;
}

.brand {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text);
}
.brand:hover { text-decoration: none; color: var(--accent); }

.site-nav { display: flex; gap: 0.25rem; flex-wrap: wrap; }

.site-nav a {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
}
.site-nav a:hover { color: var(--accent); text-decoration: none; background: var(--bg-accent-soft); }
.site-nav a[aria-current="page"] { color: var(--accent); background: var(--bg-accent-soft); }

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

.hero {
  position: relative;
  overflow: hidden;
  padding: 4rem 0 3.5rem;
}

.hero-dots {
  position: absolute;
  right: -4rem;
  top: -3rem;
  width: 34rem;
  max-width: 70vw;
  opacity: 0.5;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.hero img.avatar {
  width: 11rem;
  height: 11rem;
  border-radius: 50%;
  object-fit: cover;
  object-position: top;
  border: 4px solid var(--bg-card);
  box-shadow: var(--shadow);
}

.hero h1 { font-size: clamp(2rem, 5vw, 2.8rem); margin-bottom: 0.35rem; }

.hero .role { font-size: 1.12rem; color: var(--accent); font-weight: 600; margin: 0 0 0.3rem; }

.hero .affil { color: var(--text-muted); margin: 0 0 1rem; max-width: 34rem; }

.social-row { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.social-row a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
  transition: border-color 120ms ease, color 120ms ease, transform 120ms ease;
}
.social-row a:hover {
  color: var(--accent);
  border-color: var(--accent);
  text-decoration: none;
  transform: translateY(-1px);
}
.social-row svg { width: 1rem; height: 1rem; fill: currentColor; }

/* --------------------------------------------------------------------------
   Sections
   -------------------------------------------------------------------------- */

.section { padding: 2.5rem 0; }

.section h2 {
  font-size: 1.6rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.section h2::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
  transform: translateY(-0.35rem);
}

.section h3 { font-size: 1.15rem; margin: 1.75rem 0 0.75rem; color: var(--text); }

.lede { font-size: 1.05rem; max-width: 46rem; }
.muted { color: var(--text-muted); }
.small { font-size: 0.88rem; }

/* Metrics band */

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 1rem;
  margin: 2rem 0 0;
}

.metric {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  padding: 1.1rem 1.25rem;
  box-shadow: var(--shadow);
}

.metric .num {
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.9rem;
  font-weight: 600;
  color: var(--accent);
  line-height: 1.1;
}
.metric .label { color: var(--text-muted); font-size: 0.88rem; margin-top: 0.2rem; }

/* Interest pills */

.pills { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0; padding: 0; list-style: none; }
.pills li {
  background: var(--bg-accent-soft);
  color: var(--accent-strong);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  font-size: 0.9rem;
  font-weight: 500;
}

/* Timeline */

.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline::before {
  content: "";
  position: absolute;
  left: 0.42rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: var(--border);
}
.timeline li { position: relative; padding: 0 0 1.6rem 2rem; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42rem;
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
}
.timeline .when {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
}
.timeline .what { font-weight: 600; }
.timeline .where { color: var(--text-muted); font-size: 0.95rem; }
.timeline p { margin: 0.35rem 0 0; color: var(--text-muted); font-size: 0.95rem; }

/* Cards & grids */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr));
  gap: 1.1rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.card h3 { margin: 0; font-size: 1.12rem; }
.card .meta { color: var(--text-faint); font-size: 0.82rem; }
.card p { margin: 0; color: var(--text-muted); font-size: 0.92rem; flex: 1; }
.card .links { display: flex; flex-wrap: wrap; gap: 0.35rem 0.9rem; font-size: 0.86rem; font-weight: 500; margin-top: 0.35rem; }

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 0.12rem 0.55rem;
  border-radius: 999px;
  background: var(--bg-accent-soft);
  color: var(--accent-strong);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  vertical-align: middle;
  white-space: nowrap;
}

.badge.warm {
  background: color-mix(in srgb, var(--dot-2) 12%, var(--bg-card));
  color: color-mix(in srgb, var(--dot-2) 75%, var(--text));
  border-color: color-mix(in srgb, var(--dot-2) 40%, transparent);
}

/* Simple item lists (awards, talks, pubs) */

.item-list { list-style: none; margin: 0; padding: 0; }
.item-list li {
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border);
}
.item-list li:last-child { border-bottom: none; }
.item-list .title { font-weight: 600; }
.item-list .sub { color: var(--text-muted); font-size: 0.92rem; }

/* Publications */

.pub-year {
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--accent);
  margin: 2.2rem 0 0.4rem;
}
.pub-year:first-of-type { margin-top: 1rem; }

.pub-list { list-style: none; margin: 0; padding: 0; }
.pub-list li {
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}
.pub-list li:last-child { border-bottom: none; }
.pub-list .authors { color: var(--text-muted); }
.pub-list .authors .me { color: var(--text); font-weight: 700; }
.pub-list .ptitle { font-weight: 600; display: block; margin: 0.15rem 0; font-size: 1.02rem; }
.pub-list .venue { color: var(--text-muted); font-style: italic; }

/* Tables */

.table-scroll { overflow-x: auto; }

table.grants { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
table.grants th, table.grants td {
  text-align: left;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
table.grants th {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-faint);
}
table.grants td.amount { white-space: nowrap; font-weight: 600; color: var(--accent); }

/* Contact strip */

.contact-strip {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  box-shadow: var(--shadow);
  padding: 1.75rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin: 1rem 0 2rem;
}
.contact-strip h2 { margin: 0 0 0.25rem; font-size: 1.35rem; }
.contact-strip h2::after { display: none; }
.contact-strip p { margin: 0; color: var(--text-muted); max-width: 34rem; }

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.6rem 1.3rem;
  border-radius: 999px;
  white-space: nowrap;
}
.btn:hover { background: var(--accent-strong); color: #fff; text-decoration: none; }
@media (prefers-color-scheme: dark) {
  .btn { color: #06211d; }
  .btn:hover { color: #06211d; }
}

/* Page intro (subpages) */

.page-head { padding: 3rem 0 0.5rem; }
.page-head h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); }
.page-head p { color: var(--text-muted); max-width: 46rem; margin: 0.25rem 0 0; }

/* Footer */

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding: 2rem 0 2.5rem;
  color: var(--text-muted);
  font-size: 0.88rem;
}
.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.site-footer a { color: var(--text-muted); }
.site-footer a:hover { color: var(--accent); }

/* CV page */

.cv-section h2 { font-size: 1.45rem; }
.cv-actions { margin: 1rem 0 0; }

@media print {
  .site-header, .site-footer, .cv-actions, .hero-dots { display: none !important; }
  body { background: #fff; color: #111; font-size: 10.5pt; }
  .wrap-narrow, .wrap { max-width: 100%; padding: 0; }
  a { color: #111; text-decoration: none; }
  .section { padding: 0.8rem 0; }
  .card, .metric { box-shadow: none; }
}

@media (max-width: 40rem) {
  .hero { padding-top: 2.5rem; }
  .hero-inner { gap: 1.5rem; }
  .hero img.avatar { width: 8.5rem; height: 8.5rem; }
  .contact-strip { padding: 1.4rem 1.4rem; }
}

/* --------------------------------------------------------------------------
   Figures
   -------------------------------------------------------------------------- */

.figure { margin: 2rem 0 0; }

.figure svg {
  display: block;
  width: 100%;
  max-width: 58rem;
  height: auto;
  margin: 0 auto;
  color: var(--text);
}

.figure figcaption {
  margin: 1.1rem auto 0;
  max-width: 46rem;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Package stickers
   -------------------------------------------------------------------------- */

.card-head { display: flex; align-items: flex-start; gap: 0.9rem; }
.card-head-text { min-width: 0; }
.card-head h3 { margin: 0 0 0.2rem; }

.sticker { flex: none; width: 4.5rem; display: block; }
.sticker img { width: 100%; height: auto; display: block; }

@media (max-width: 40rem) {
  .sticker { width: 3.6rem; }
}

/* Offset in-page anchors so the sticky header doesn't cover the heading */
[id] { scroll-margin-top: 4.5rem; }

/* Cross-link from a publication to the software it produced */
.pub-soft {
  margin-top: 0.35rem;
  font-size: 0.85rem;
  color: var(--text-faint);
}
.pub-soft a { font-weight: 500; }