/* =========================================================================
   Nishat Raihan · academic site
   Palette: University of Notre Dame (Blue #0C2340, Dome Gold #C99700)
   Type:    Fraunces (display serif) + Spline Sans (body) + JetBrains Mono
   ========================================================================= */

:root {
  --nd-blue:        #0c2340;
  --nd-blue-mid:    #143865;
  --nd-blue-bright: #1c4f8f;
  --nd-gold:        #c99700;
  --nd-gold-bright: #d39f10;
  --nd-gold-warm:   #ae9142;

  --bg:        #fbf9f4;
  --bg-soft:   #f3efe6;
  --surface:   #ffffff;
  --ink:       #1a2433;
  --ink-soft:  #4d5a6d;
  --ink-faint: #8a93a3;
  --line:      #e6e0d3;
  --accent:    var(--nd-blue);
  --link:      var(--nd-blue-bright);
  --gold:      var(--nd-gold);
  --halo:      rgba(201, 151, 0, 0.16);

  --maxw: 1300px;
  --radius: 4px;
  --shadow: 0 1px 2px rgba(12, 35, 64, 0.05), 0 8px 28px rgba(12, 35, 64, 0.07);

  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans:  "Spline Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

html[data-theme="dark"] {
  --bg:        #0a1626;
  --bg-soft:   #0f2036;
  --surface:   #112740;
  --ink:       #e8e4d8;
  --ink-soft:  #aab6c7;
  --ink-faint: #7c8a9d;
  --line:      #1f3a58;
  --accent:    #e8e4d8;
  --link:      #f0c44a;
  --gold:      var(--nd-gold-bright);
  --halo:      rgba(211, 159, 16, 0.18);
  --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 10px 30px rgba(0,0,0,0.35);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.68;
  font-size: 17px;
  font-weight: 350;
  letter-spacing: 0.005em;
  transition: background 0.35s ease, color 0.35s ease;
  -webkit-font-smoothing: antialiased;
}

/* faint Golden-Dome arc behind the top of every page */
body::before {
  content: "";
  position: fixed;
  top: -340px; left: 50%;
  width: 1200px; height: 1200px;
  transform: translateX(-50%);
  background: radial-gradient(circle at 50% 50%, var(--halo) 0%, transparent 62%);
  pointer-events: none;
  z-index: 0;
}

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

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 560;
  color: var(--accent);
  line-height: 1.18;
  letter-spacing: -0.012em;
  font-optical-sizing: auto;
}

strong, b { font-weight: 600; color: var(--ink); }

::selection { background: var(--halo); color: var(--nd-blue); }

/* ---------------------------------------------------------------- nav --- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 0 28px; height: 64px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand {
  font-family: var(--serif);
  font-size: 1.12rem; font-weight: 600;
  color: var(--accent); letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 10px;
  flex: none; white-space: nowrap;
}
.brand:hover { text-decoration: none; }
.brand .mono-mark {
  width: 30px; height: 30px; flex: none;
  border: 1.5px solid var(--gold);
  border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--serif); font-size: 0.82rem; font-weight: 700;
  color: var(--gold);
}
.nav-links { display: flex; align-items: center; gap: 2px; list-style: none; flex: none; }
.nav-links a {
  color: var(--ink-soft); font-size: 0.88rem; font-weight: 400;
  padding: 8px 11px; border-radius: var(--radius);
  white-space: nowrap;
  transition: color 0.18s, background 0.18s;
}
.nav-links a:hover { color: var(--accent); background: var(--bg-soft); text-decoration: none; }
.nav-links a.active { color: var(--accent); }
.nav-links a.active::after {
  content: ""; display: block; height: 2px; margin-top: 3px;
  background: var(--gold); border-radius: 2px;
}
.theme-toggle {
  margin-left: 8px; width: 38px; height: 38px;
  display: grid; place-items: center;
  background: transparent; border: 1px solid var(--line);
  border-radius: 50%; cursor: pointer; color: var(--ink-soft);
  transition: color 0.18s, border-color 0.18s, transform 0.18s;
}
.theme-toggle:hover { color: var(--gold); border-color: var(--gold); transform: rotate(-12deg); }
.theme-toggle svg { width: 17px; height: 17px; }
.nav-burger {
  display: none; background: none; border: none; cursor: pointer;
  color: var(--accent); padding: 8px; margin-left: 4px;
}
.nav-burger svg { width: 24px; height: 24px; }

/* ---------------------------------------------------------------- shell - */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; position: relative; z-index: 1; }

.layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 64px;
  padding: 58px 0 90px;
}

/* ------------------------------------------------------------- profile -- */
.profile { position: sticky; top: 92px; align-self: start; }
.profile-photo {
  width: 100%; aspect-ratio: 1; border-radius: 6px;
  object-fit: cover; display: block;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.profile-photo-wrap { position: relative; }
.profile-photo-wrap::after {
  content: ""; position: absolute; inset: -7px;
  border: 1px solid var(--gold); border-radius: 9px;
  opacity: 0.5; pointer-events: none;
}
.profile h1 {
  font-size: 1.74rem; margin: 26px 0 4px;
  letter-spacing: -0.02em;
}
.profile .role { font-size: 0.97rem; color: var(--ink); font-weight: 500; }
.profile .role .incoming {
  display: inline-block; font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--gold); border: 1px solid var(--gold);
  padding: 1px 7px; border-radius: 999px; margin-bottom: 7px;
}
.profile .affil {
  font-size: 0.92rem; color: var(--ink-soft);
  margin-top: 10px; line-height: 1.55;
}
.profile .affil a { color: var(--ink-soft); border-bottom: 1px dotted var(--ink-faint); }
.profile .affil a:hover { color: var(--link); text-decoration: none; }

.socials {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-top: 22px; padding-top: 22px;
  border-top: 1px solid var(--line);
}
.socials a {
  display: flex; align-items: center; gap: 7px;
  font-size: 0.82rem; color: var(--ink-soft);
  padding: 6px 11px; border: 1px solid var(--line);
  border-radius: 999px; transition: all 0.18s;
}
.socials a:hover {
  color: var(--nd-blue); background: var(--halo);
  border-color: var(--gold); text-decoration: none;
}
html[data-theme="dark"] .socials a:hover { color: var(--gold); }
.socials svg { width: 14px; height: 14px; }

/* recent news inside the profile column */
.profile-news {
  margin-top: 24px; padding-top: 22px;
  border-top: 1px solid var(--line);
}
.profile-news .pn-head {
  font-family: var(--sans); font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 14px;
  display: flex; align-items: center; gap: 9px;
}
.profile-news .pn-head svg {
  width: 14px; height: 14px; stroke: currentColor; fill: none;
  stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round;
}
.pn-item {
  position: relative; padding: 0 0 15px 18px;
  font-size: 0.86rem; color: var(--ink-soft); line-height: 1.5;
}
.pn-item::before {
  content: ""; position: absolute; left: 0; top: 6px;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--gold); box-shadow: 0 0 0 3px var(--halo);
}
.pn-item::after {
  content: ""; position: absolute; left: 3px; top: 15px; bottom: 0;
  width: 1px; background: var(--line);
}
.pn-item:last-child { padding-bottom: 0; }
.pn-item:last-child::after { display: none; }
.pn-item .pn-when {
  display: block; font-family: var(--mono); font-size: 0.68rem;
  color: var(--ink-faint); letter-spacing: 0.04em; margin-bottom: 2px;
}
.pn-item b { color: var(--ink); }
.pn-more {
  font-size: 0.78rem; font-weight: 500; color: var(--link);
  display: inline-flex; align-items: center; gap: 5px; margin-top: 4px;
}
.pn-more:hover { gap: 8px; text-decoration: none; }

/* collaboration call-to-action */
.collab {
  border: 1px solid var(--gold);
  border-radius: 8px;
  background: linear-gradient(180deg, var(--halo), transparent);
  padding: 22px 26px; margin-bottom: 44px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 22px; flex-wrap: wrap;
}
.collab .ctext { min-width: 0; }
.collab .ctext h3 {
  font-size: 1.15rem; color: var(--accent); margin-bottom: 4px;
}
.collab .ctext p { font-size: 0.92rem; color: var(--ink-soft); margin: 0; }
.collab .collab-btn { flex: none; align-self: center; }
.collab .collab-btn svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; }

/* personal page: left sub-nav + panels */
.personal-wrap {
  display: grid; grid-template-columns: 210px 1fr;
  gap: 44px; align-items: start;
}
.ptabs {
  position: sticky; top: 92px;
  display: flex; flex-direction: column; gap: 2px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px; padding: 8px;
}
.ptab-btn {
  text-align: left; background: none; border: none; cursor: pointer;
  font-family: var(--sans); font-size: 0.94rem; color: var(--ink-soft);
  padding: 10px 12px; border-radius: var(--radius);
  display: flex; align-items: center; gap: 11px; width: 100%;
  transition: color 0.16s, background 0.16s;
}
.ptab-btn svg {
  width: 17px; height: 17px; flex: none; stroke: currentColor;
  fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
}
.ptab-btn:hover { color: var(--accent); background: var(--bg-soft); }
.ptab-btn.active {
  color: var(--nd-blue); font-weight: 500; background: var(--halo);
}
html[data-theme="dark"] .ptab-btn.active { color: var(--gold); }
.ppanels { max-width: 640px; }
.ppanel { display: none; animation: rise 0.5s cubic-bezier(.2,.7,.2,1); }
.ppanel.active { display: block; }
.ppanel h2 { font-size: 1.7rem; margin-bottom: 6px; }
.ppanel > .lead-sub {
  color: var(--ink-soft); font-size: 1rem; margin-bottom: 28px;
  padding-bottom: 20px; border-bottom: 1px solid var(--line);
}
.pgroup {
  margin-bottom: 26px; padding: 18px 22px;
  border: 1px solid var(--line); border-radius: 8px; background: var(--surface);
}
.pgroup:last-child { margin-bottom: 0; }
.pgroup h3 {
  font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 12px; font-family: var(--sans); font-weight: 600;
}
.plist { list-style: none; display: grid; gap: 10px; }
.plist li {
  font-size: 0.96rem; color: var(--ink-soft);
  padding-left: 20px; position: relative; line-height: 1.55;
}
.plist li::before {
  content: "▹"; position: absolute; left: 0; color: var(--gold);
}
.plist li b { color: var(--ink); }
.pnote {
  font-size: 0.88rem; color: var(--ink-faint); font-style: italic;
  margin-top: 14px;
}

/* ---------------------------------------------------------------- main -- */
.main { min-width: 0; }
.section { margin-bottom: 56px; scroll-margin-top: 88px; }
.section:last-child { margin-bottom: 0; }

.eyebrow {
  font-family: var(--sans);
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 14px;
  display: flex; align-items: center; gap: 10px;
}
.eyebrow svg {
  width: 15px; height: 15px; flex: none;
  stroke: currentColor; fill: none; stroke-width: 1.9;
  stroke-linecap: round; stroke-linejoin: round;
}
.eyebrow::after {
  content: ""; flex: 1; height: 1px;
  background: linear-gradient(90deg, var(--line), transparent);
}
.section > h2 { font-size: 1.62rem; margin-bottom: 18px; }

.lead { font-size: 1.16rem; line-height: 1.6; color: var(--ink); }
.prose p { margin-bottom: 1.05em; color: var(--ink-soft); }
.prose p:last-child { margin-bottom: 0; }
.prose a { border-bottom: 1px solid color-mix(in srgb, var(--link) 35%, transparent); }
.prose a:hover { text-decoration: none; border-color: var(--link); }

/* announcement banner */
.banner {
  background: var(--nd-blue);
  color: #f4eddc;
  border-radius: 6px;
  padding: 18px 24px;
  margin-bottom: 44px;
  display: flex; flex-direction: column; gap: 4px;
  position: relative; overflow: hidden;
  box-shadow: var(--shadow);
}
.banner::before {
  content: ""; position: absolute; right: -60px; top: -60px;
  width: 180px; height: 180px; border-radius: 50%;
  background: radial-gradient(circle, rgba(201,151,0,0.45), transparent 70%);
}
.banner b { color: #fff; }
.banner .b-line { font-size: 0.95rem; position: relative; }
.banner .b-line .dot { color: var(--nd-gold-bright); margin-right: 9px; }
.banner a { color: #f0c44a; border-bottom: 1px solid rgba(240,196,74,0.4); }
.banner a:hover { text-decoration: none; color: #fff; }

/* news / timeline */
.news { display: grid; grid-template-columns: 1fr 1fr; column-gap: 44px; }
.news-row {
  display: grid; grid-template-columns: 84px 1fr;
  gap: 20px; padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.93rem;
}
.news-row:nth-child(-n+2) { border-top: none; }
.news-row .when {
  font-family: var(--mono); font-size: 0.76rem;
  color: var(--ink-faint); padding-top: 3px;
  letter-spacing: 0.02em;
}
.news-row .what { color: var(--ink-soft); }
.news-row .what b { color: var(--ink); }

/* research interest cards */
.interests { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.interest {
  border: 1px solid var(--line); border-radius: 6px;
  padding: 18px 20px; background: var(--surface);
  transition: border-color 0.2s, transform 0.2s;
}
.interest:hover { border-color: var(--gold); transform: translateY(-2px); }
.interest .ihead { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.interest .ihead svg {
  width: 19px; height: 19px; flex: none;
  stroke: var(--gold); fill: none; stroke-width: 1.9;
  stroke-linecap: round; stroke-linejoin: round;
}
.interest .ihead h3 { margin: 0; }
.interest h3 { font-size: 1.08rem; color: var(--ink); }
.profile .uni-line {
  display: flex; align-items: center; gap: 11px;
  margin-top: 12px; padding-top: 12px;
  border-top: 1px solid var(--line);
}
.profile .uni-line .ul-text { font-size: 0.9rem; color: var(--ink-soft); line-height: 1.4; }
.profile .uni-line .ul-text a { color: var(--ink-soft); border-bottom: 1px dotted var(--ink-faint); }
.profile .uni-line .ul-text a:hover { color: var(--link); text-decoration: none; }
.interest p { font-size: 0.92rem; color: var(--ink-soft); margin-bottom: 10px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tags .tag {
  font-family: var(--mono); font-size: 0.7rem;
  color: var(--ink-soft); background: var(--bg-soft);
  border: 1px solid var(--line);
  padding: 2px 9px; border-radius: 999px;
}

/* publications */
.pub {
  display: grid; grid-template-columns: 64px 1fr; gap: 22px;
  padding: 22px 0; border-top: 1px solid var(--line);
}
.pub:first-of-type { border-top: none; }
.pub .vkey {
  font-family: var(--mono); font-size: 0.72rem;
  color: var(--gold); font-weight: 600; padding-top: 4px;
  letter-spacing: 0.04em;
}
.pub .ptitle {
  font-family: var(--serif); font-size: 1.12rem; font-weight: 560;
  color: var(--ink); line-height: 1.32; margin-bottom: 6px;
}
.pub .pauthors { font-size: 0.9rem; color: var(--ink-soft); margin-bottom: 3px; }
.pub .pauthors .me { color: var(--ink); font-weight: 600; border-bottom: 1.5px solid var(--gold); }
.pub .pvenue { font-size: 0.88rem; color: var(--ink-faint); font-style: italic; margin-bottom: 11px; }
.pub .pdesc { font-size: 0.92rem; color: var(--ink-soft); margin: 8px 0 12px; }
.badge {
  font-family: var(--sans); font-style: normal;
  font-size: 0.66rem; font-weight: 700; letter-spacing: 0.07em;
  text-transform: uppercase; color: var(--nd-blue);
  background: var(--nd-gold-bright); padding: 2px 8px;
  border-radius: 3px; margin-left: 8px; vertical-align: middle;
}
html[data-theme="dark"] .badge { color: #0a1626; }
.plinks { display: flex; flex-wrap: wrap; gap: 8px; }
.plinks a {
  font-size: 0.79rem; font-weight: 500;
  padding: 5px 13px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--ink-soft);
  transition: all 0.16s;
}
.plinks a:hover {
  border-color: var(--nd-blue); color: var(--nd-blue);
  background: var(--halo); text-decoration: none;
}
html[data-theme="dark"] .plinks a:hover { color: var(--gold); border-color: var(--gold); }

/* artifacts */
.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.card {
  border: 1px solid var(--line); border-radius: 6px;
  padding: 20px; background: var(--surface);
  transition: transform 0.2s, border-color 0.2s;
}
.card:hover { transform: translateY(-3px); border-color: var(--gold); }
.card .kind {
  font-family: var(--mono); font-size: 0.68rem;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 9px;
}
.card h3 { font-size: 1.05rem; color: var(--ink); margin-bottom: 6px; }
.card p { font-size: 0.88rem; color: var(--ink-soft); margin-bottom: 12px; }
.card .clinks { display: flex; gap: 12px; font-size: 0.8rem; }

/* generic page header */
.page-head { padding: 56px 0 8px; position: relative; z-index: 1; }
.page-head .eyebrow { justify-content: flex-start; }
.page-head .eyebrow::after { display: none; }
.page-head h1 { font-size: 2.5rem; letter-spacing: -0.025em; }
.page-head p { color: var(--ink-soft); margin-top: 10px; font-size: 1.05rem; max-width: 60ch; }
.page-body { padding: 30px 0 90px; position: relative; z-index: 1; }

/* stat strip */
.stats { display: flex; flex-wrap: wrap; gap: 38px; margin-top: 26px; }
.stat .num {
  font-family: var(--serif); font-size: 2rem; font-weight: 600;
  color: var(--accent); line-height: 1;
}
.stat .lab {
  font-size: 0.74rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-faint); margin-top: 7px;
}

/* CV blocks */
.cv-group { margin-bottom: 48px; }
.cv-entry {
  display: grid; grid-template-columns: 1fr auto; gap: 8px 24px;
  padding: 18px 0; border-top: 1px solid var(--line);
}
.cv-entry:first-of-type { border-top: none; }
.cv-entry .ct { font-family: var(--serif); font-size: 1.1rem; font-weight: 560; color: var(--ink); }
.cv-entry .cmeta { color: var(--ink-soft); font-size: 0.92rem; margin-top: 2px; }
.cv-entry .cwhen {
  font-family: var(--mono); font-size: 0.78rem;
  color: var(--ink-faint); text-align: right; white-space: nowrap; padding-top: 4px;
}
.cv-entry ul { margin: 9px 0 0 0; padding-left: 18px; }
.cv-entry li { font-size: 0.92rem; color: var(--ink-soft); margin-bottom: 4px; }
.cv-entry .full { grid-column: 1 / -1; }
.cv-list { columns: 2; column-gap: 40px; font-size: 0.94rem; color: var(--ink-soft); }
.cv-list li { margin-bottom: 7px; break-inside: avoid; list-style: none; padding-left: 16px; position: relative; }
.cv-list li::before { content: "▹"; position: absolute; left: 0; color: var(--gold); }

/* ---- horizontal entry grid (education / experience / service / talks) -- */
.group { margin-bottom: 52px; }
.group:last-child { margin-bottom: 0; }
.group > .eyebrow { justify-content: flex-start; }
.group > .eyebrow::after { display: none; }

.entry-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.entry-grid.one { grid-template-columns: 1fr; }
.entry {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  padding: 20px 22px;
  transition: border-color 0.2s, transform 0.2s;
  display: flex; flex-direction: row; align-items: flex-start; gap: 16px;
}
.entry:hover { border-color: var(--gold); transform: translateY(-2px); }
.entry .e-body { flex: 1; min-width: 0; display: flex; flex-direction: column; }

/* institutional logo badges (PNG, swappable in media/logos/) */
.crest {
  width: 46px; height: 46px; flex: none;
  border-radius: 10px; object-fit: cover;
  background: var(--bg-soft);
  box-shadow: 0 1px 2px rgba(12, 35, 64, 0.16);
  display: block;
}
.crest.sm { width: 38px; height: 38px; border-radius: 9px; }

.justify p { text-align: justify; text-justify: inter-word; hyphens: auto; -webkit-hyphens: auto; }
.entry .e-top {
  display: flex; justify-content: space-between;
  align-items: baseline; gap: 16px; margin-bottom: 4px;
}
.entry .e-title {
  font-family: var(--serif); font-size: 1.14rem;
  font-weight: 560; color: var(--ink); line-height: 1.25;
}
.entry .e-when {
  font-family: var(--mono); font-size: 0.74rem;
  color: var(--ink-faint); white-space: nowrap; flex: none;
  letter-spacing: 0.02em; padding-top: 3px;
}
.entry .e-org { font-size: 0.95rem; color: var(--ink-soft); font-weight: 500; }
.entry .e-org a { color: var(--link); }
.entry .e-meta { font-size: 0.9rem; color: var(--ink-soft); margin-top: 7px; }
.entry .e-meta em { color: var(--ink); font-style: italic; }
.entry ul { margin: 10px 0 0 0; padding-left: 17px; }
.entry li { font-size: 0.9rem; color: var(--ink-soft); margin-bottom: 5px; }
.entry .e-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.entry .e-links a {
  font-size: 0.78rem; font-weight: 500; padding: 4px 12px;
  border: 1px solid var(--line); border-radius: 999px; color: var(--ink-soft);
}
.entry .e-links a:hover {
  border-color: var(--gold); color: var(--accent);
  background: var(--halo); text-decoration: none;
}

/* personal page */
.fact-block { margin-bottom: 40px; }
.fact-block > .eyebrow { justify-content: flex-start; }
.fact-block > .eyebrow::after { display: none; }
.fact-list { list-style: none; display: grid; gap: 14px; }
.fact-list.cols { grid-template-columns: repeat(2, minmax(0,1fr)); }
.fact-list li {
  font-size: 0.97rem; color: var(--ink-soft);
  padding-left: 30px; position: relative; line-height: 1.6;
}
.fact-list li .ic { position: absolute; left: 0; top: 1px; font-size: 1.05rem; }
.fact-list li b { color: var(--ink); }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.88rem; font-weight: 500;
  padding: 11px 20px; border-radius: 999px;
  border: 1px solid var(--nd-blue); color: #fff; background: var(--nd-blue);
  transition: all 0.18s;
}
.btn:hover { background: var(--nd-blue-mid); text-decoration: none; transform: translateY(-1px); }
.btn.ghost { background: transparent; color: var(--accent); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--gold); background: var(--halo); color: var(--accent); }
html[data-theme="dark"] .btn { background: var(--nd-gold-bright); color: #0a1626; border-color: var(--nd-gold-bright); }
html[data-theme="dark"] .btn:hover { background: var(--nd-gold); }

/* blog */
.posts { display: flex; flex-direction: column; gap: 4px; }
.post-card {
  padding: 28px 0; border-top: 1px solid var(--line);
  display: grid; grid-template-columns: 130px 1fr; gap: 30px;
}
.post-card:first-child { border-top: none; }
.post-card .pdate {
  font-family: var(--mono); font-size: 0.78rem; color: var(--ink-faint);
  padding-top: 5px;
}
.post-card h2 { font-size: 1.4rem; margin-bottom: 8px; }
.post-card h2 a { color: var(--accent); }
.post-card h2 a:hover { color: var(--link); text-decoration: none; }
.post-card .excerpt { color: var(--ink-soft); font-size: 0.96rem; margin-bottom: 14px; }
.post-card .meta-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.read-on {
  font-size: 0.84rem; font-weight: 500; color: var(--link);
  display: inline-flex; align-items: center; gap: 5px;
}
.read-on:hover { gap: 9px; text-decoration: none; }

/* article */
.article { max-width: 760px; margin: 0 auto; padding: 40px 0 90px; position: relative; z-index: 1; }
.back-link { font-size: 0.85rem; color: var(--ink-soft); display: inline-flex; gap: 6px; }
.back-link:hover { color: var(--link); text-decoration: none; }
.article-head { margin: 26px 0 36px; padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.article-head h1 { font-size: 2.5rem; letter-spacing: -0.025em; line-height: 1.15; }
.article-meta {
  display: flex; flex-wrap: wrap; gap: 18px; margin-top: 18px;
  font-family: var(--mono); font-size: 0.78rem; color: var(--ink-faint);
}
.article-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }
.article-body { font-size: 1.06rem; line-height: 1.78; color: var(--ink-soft); }
.article-body h2 {
  font-size: 1.55rem; margin: 44px 0 16px; color: var(--accent);
  padding-bottom: 8px; border-bottom: 1px solid var(--line);
}
.article-body h3 { font-size: 1.2rem; margin: 30px 0 12px; color: var(--ink); }
.article-body p { margin-bottom: 1.2em; }
.article-body ul, .article-body ol { margin: 0 0 1.2em 1.3em; }
.article-body li { margin-bottom: 0.5em; }
.article-body strong { color: var(--ink); }
.article-body .quote {
  font-family: var(--serif); font-size: 1.3rem; font-style: italic;
  color: var(--accent); border-left: 3px solid var(--gold);
  padding: 4px 0 4px 24px; margin: 8px 0 32px;
}
.article-body .highlight-box {
  background: var(--bg-soft); border-left: 3px solid var(--gold);
  padding: 18px 22px; border-radius: 0 6px 6px 0; margin: 24px 0;
  font-size: 0.98rem;
}
.article-body .paper-link {
  display: inline-block; margin-top: 10px; font-weight: 600; color: var(--link);
}
.author-box {
  margin-top: 38px; padding: 22px 24px;
  background: var(--bg-soft); border-radius: 8px;
  font-size: 0.92rem; color: var(--ink-soft);
}
.like-bar {
  margin-top: 34px; padding-top: 26px; border-top: 1px solid var(--line);
  display: flex; gap: 18px; align-items: center; flex-wrap: wrap;
}
.like-btn {
  background: var(--nd-blue); color: #fff; border: none;
  padding: 10px 20px; border-radius: 999px; cursor: pointer;
  font-family: var(--sans); font-size: 0.9rem;
  display: flex; align-items: center; gap: 9px; transition: transform 0.15s, background 0.2s;
}
.like-btn:hover { transform: translateY(-1px); }
.like-btn.liked { background: var(--nd-gold); color: var(--nd-blue); }
.like-btn .count { background: rgba(255,255,255,0.22); padding: 1px 9px; border-radius: 999px; font-weight: 700; }
.like-btn.liked .count { background: rgba(12,35,64,0.18); }

/* footer */
.footer {
  border-top: 1px solid var(--line);
  background: var(--bg-soft);
  position: relative; z-index: 1;
}
.footer-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 36px 28px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 18px;
  font-size: 0.86rem; color: var(--ink-faint);
}
.footer-inner a { color: var(--ink-soft); }
.footer-inner .fnav { display: flex; gap: 18px; flex-wrap: wrap; }

/* reveal on load */
.reveal { opacity: 0; transform: translateY(14px); animation: rise 0.7s cubic-bezier(.2,.7,.2,1) forwards; }
.reveal.d1 { animation-delay: 0.05s; }
.reveal.d2 { animation-delay: 0.12s; }
.reveal.d3 { animation-delay: 0.19s; }
.reveal.d4 { animation-delay: 0.26s; }
@keyframes rise { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .reveal { animation: none; opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ---------------------------------------------------------- responsive - */
@media (max-width: 1180px) {
  .nav-links { display: none; }
  .nav-burger { display: inline-flex; }
  .nav.open .nav-links {
    display: flex; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line); padding: 8px 16px 16px;
  }
  .nav.open .nav-links a { padding: 13px 8px; border-radius: 0; }
  .nav.open .nav-links a.active::after { display: none; }
}
@media (max-width: 920px) {
  .layout { grid-template-columns: 1fr; gap: 40px; padding-top: 38px; }
  .profile { position: static; max-width: 460px; }
  .profile-photo { max-width: 240px; }
  .cards { grid-template-columns: 1fr; }
  .cv-list { columns: 1; }
  .interests { grid-template-columns: 1fr; }
  .news { grid-template-columns: 1fr; }
  .news-row:nth-child(-n+2) { border-top: 1px solid var(--line); }
  .news-row:first-child { border-top: none; }
  .entry-grid { grid-template-columns: 1fr; }
  .fact-list.cols { grid-template-columns: 1fr; }
  .personal-wrap { grid-template-columns: 1fr; gap: 22px; }
  .ptabs {
    position: static; flex-direction: row; flex-wrap: wrap;
  }
  .ptab-btn { width: auto; }
  .ppanels { max-width: none; }
  .collab { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .wrap, .nav-inner { padding-left: 20px; padding-right: 20px; }
  .pub { grid-template-columns: 1fr; gap: 8px; }
  .pub .vkey { padding-top: 0; }
  .news-row { grid-template-columns: 76px 1fr; gap: 16px; }
  .post-card { grid-template-columns: 1fr; gap: 10px; }
  .cv-entry { grid-template-columns: 1fr; }
  .cv-entry .cwhen { text-align: left; }
  .entry .e-top { flex-direction: column; gap: 2px; }
  .entry .e-when { padding-top: 0; }
  .crest { width: 40px; height: 40px; font-size: 0.74rem; }
  .page-head h1, .article-head h1 { font-size: 2rem; }
  .article-body .quote { font-size: 1.15rem; }
}