/* ===================================================================
   Bardienus Duisterhof — personal site
   Modern dark portfolio with bright 3D hero centerpiece.
   Typography: Space Grotesk (display) + Inter (body) + JetBrains Mono.
   =================================================================== */

/* -------------------- Tokens -------------------- */
:root {
  /* Surfaces */
  --bg: #000000;
  --bg-2: #0b0b0f;
  --surface: #13131b;

  /* Text */
  --text: #e5e7eb;
  --muted: #9ca3af;

  /* Lines & borders */
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);

  /* Accent */
  --accent: #38bdf8;     /* sky-400 — links, focus, primary highlight */
  --accent-2: #f59e0b;   /* amber-500 — hover, "best paper" emphasis */

  /* 3D scene only — never on UI chrome */
  --scene-forest: #34d399;
  --scene-sun: #fcd34d;

  /* Type families */
  --ff-display: 'Space Grotesk', 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --ff-body:    'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --ff-mono:    'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Type scale */
  --fs-sm: 13px;
  --fs-md: 15px;
  --fs-lg: 18px;
  --fs-xl: 28px;
  --fs-display: clamp(48px, 7vw, 84px);

  /* Spacing scale (8px base) */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 96px;

  /* Layout */
  --content-max: 1080px;
  --hero-content-max: 720px;

  /* Motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

html {
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(56, 189, 248, 0.08), transparent 60%),
    radial-gradient(1000px 500px at 110% 10%, rgba(245, 158, 11, 0.06), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  background-attachment: fixed;
  min-height: 100%;
}

body {
  margin: 0;
  font-family: var(--ff-body);
  font-size: var(--fs-md);
  line-height: 1.6;
  color: var(--text);
  background: transparent;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Subtle SVG noise grain — sits behind orbs and content (z-index -2). */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='matrix' values='0.333 0.333 0.333 0 0 0.333 0.333 0.333 0 0 0.333 0.333 0.333 0 0 0 0 0 1 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  background-size: 200px 200px;
  background-repeat: repeat;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color .2s var(--ease-out);
}
a:hover {
  color: var(--accent-2);
}
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

p { margin: 0 0 var(--s-3) 0; }
ul { margin: 0; padding: 0; list-style: none; }
img, video { display: block; max-width: 100%; height: auto; }

strong { font-weight: 600; color: var(--text); }
em { color: var(--text); }

/* -------------------- Custom legacy tags (kept) -------------------- */
heading {
  display: block;
  font-family: var(--ff-display);
  font-size: var(--fs-xl);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 var(--s-5) 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

papertitle {
  font-family: var(--ff-display);
  font-size: var(--fs-lg);
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
  transition: color .2s var(--ease-out), text-shadow .2s var(--ease-out);
}
a:hover papertitle {
  color: var(--accent);
  text-shadow: 0 0 10px rgba(56, 189, 248, 0.45);
}

name {
  font-family: var(--ff-display);
  font-size: var(--fs-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  background: linear-gradient(90deg, #ffffff, #cbd5e1 60%, #9ca3af);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

/* -------------------- Background orbs -------------------- */
.bg-orbs {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.85;
}
.orb {
  position: absolute;
  border-radius: 9999px;
  filter: blur(36px);
}
/* Wandering drift; offsets and periods differ per orb so motion reads as arbitrary */
.orb-a { animation: orb-drift-a 16s ease-in-out infinite; }
.orb-b { animation: orb-drift-b 21s ease-in-out infinite; }
.orb-c { animation: orb-drift-c 18s ease-in-out infinite; }
@keyframes orb-drift-a {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25%      { transform: translate(110px, 70px) scale(1.12); }
  50%      { transform: translate(30px, 160px) scale(0.92); }
  75%      { transform: translate(-90px, 60px) scale(1.06); }
}
@keyframes orb-drift-b {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25%      { transform: translate(-120px, 90px) scale(0.93); }
  50%      { transform: translate(-40px, -80px) scale(1.1); }
  75%      { transform: translate(80px, 50px) scale(1.0); }
}
@keyframes orb-drift-c {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25%      { transform: translate(90px, -60px) scale(1.08); }
  50%      { transform: translate(170px, 30px) scale(0.94); }
  75%      { transform: translate(50px, -100px) scale(1.09); }
}
.orb-a {
  left: -80px;
  top: -80px;
  width: 360px;
  height: 360px;
  background:
    radial-gradient(circle at 30% 30%, rgba(99, 102, 241, 0.35), transparent 60%),
    radial-gradient(circle at 70% 70%, rgba(56, 189, 248, 0.35), transparent 60%);
}
.orb-b {
  right: -100px;
  top: 140px;
  width: 420px;
  height: 420px;
  background:
    radial-gradient(circle at 40% 40%, rgba(236, 72, 153, 0.22), transparent 60%),
    radial-gradient(circle at 60% 60%, rgba(245, 158, 11, 0.22), transparent 60%);
}
/* Third orb — anchored to the lower-left of the viewport so coverage
   extends below the hero fold as the user scrolls through the body. */
.orb-c {
  left: -140px;
  bottom: -180px;
  width: 460px;
  height: 460px;
  background:
    radial-gradient(circle at 35% 35%, rgba(56, 189, 248, 0.32), transparent 60%),
    radial-gradient(circle at 65% 65%, rgba(52, 211, 153, 0.30), transparent 60%);
}

/* -------------------- Navbar -------------------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.55);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  backdrop-filter: saturate(140%) blur(12px);
}
.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding-left: var(--s-4);
  padding-right: var(--s-4);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--s-3);
  padding-bottom: var(--s-3);
  gap: var(--s-4);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  color: var(--text);
}
.brand:hover { color: var(--text); }
.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, #6366f1, #22d3ee, #10b981);
  box-shadow: 0 4px 18px rgba(34, 211, 238, 0.25);
}
.brand-text { line-height: 1.1; }
.brand-name {
  font-family: var(--ff-display);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--s-5);
  font-family: var(--ff-body);
  font-size: var(--fs-sm);
  font-weight: 500;
}
.nav-links a {
  color: #cbd5e1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.nav-links a:hover { color: #ffffff; }

/* Hamburger toggle button (mobile only) */
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: rgba(19, 19, 27, 0.6);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  color: var(--text);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  transition: border-color .2s var(--ease-out), background .2s var(--ease-out);
}
.nav-toggle:hover { border-color: var(--accent); }
.nav-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform .2s var(--ease-out), opacity .2s var(--ease-out);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

@media (max-width: 768px) {
  .nav-links { gap: var(--s-3); flex-wrap: wrap; justify-content: flex-end; }
  .nav-links a { letter-spacing: 0.02em; font-size: 12px; }
}

@media (max-width: 640px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--s-3) var(--s-4) var(--s-4);
    background: rgba(11, 11, 15, 0.96);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.4);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity .2s var(--ease-out),
                transform .2s var(--ease-out),
                visibility 0s linear .2s;
  }
  .nav-links.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
    transition-delay: 0s;
  }
  .nav-links a {
    padding: var(--s-3) var(--s-2);
    border-bottom: 1px solid var(--border);
    font-size: var(--fs-sm);
    letter-spacing: 0.04em;
  }
  .nav-links a:last-child { border-bottom: 0; }
  .nav-links .btn-outline {
    margin-top: var(--s-2);
    justify-content: center;
  }
}

/* -------------------- Buttons -------------------- */
.btn-outline,
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: 10px 16px;
  border-radius: 14px;
  font-family: var(--ff-body);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: transform .2s var(--ease-out),
              background .2s var(--ease-out),
              border-color .2s var(--ease-out),
              color .2s var(--ease-out),
              box-shadow .2s var(--ease-out);
  white-space: nowrap;
}
.btn-outline {
  border: 1px solid var(--border-strong);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(56, 189, 248, 0.35);
  color: var(--text);
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #6366f1);
  color: #06121b;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 6px 22px rgba(56, 189, 248, 0.28);
}
.btn-primary:hover {
  color: #06121b;
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.4);
}
@media (prefers-reduced-motion: no-preference) {
  .btn-outline:hover, .btn-primary:hover { transform: translateY(-2px); }
}
.arr {
  display: inline-block;
  transition: transform .2s var(--ease-out);
}
.btn-outline:hover .arr,
.btn-primary:hover .arr {
  transform: translate(2px, -2px);
}

/* -------------------- Hero -------------------- */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 26vh;
  display: flex;
  align-items: center;
  justify-content: center;
  /* Extra bottom padding keeps the scroll cue clear of the CTA row */
  padding: var(--s-6) var(--s-4) var(--s-8);
}
/* Soft seam between hero and About — 56px fade to bg-2 */
.hero::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 56px;
  background: linear-gradient(to bottom, transparent, var(--bg-2));
  pointer-events: none;
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--hero-content-max);
  width: 100%;
  text-align: center;
  /* Radial scrim behind content for legibility over bright scene */
  isolation: isolate;
}
.hero-content::before {
  content: '';
  position: absolute;
  inset: -10% -8%;
  z-index: -1;
  background: radial-gradient(
    ellipse at center,
    rgba(0, 0, 0, 0.55) 0%,
    rgba(0, 0, 0, 0.32) 40%,
    transparent 75%
  );
  pointer-events: none;
}
.hero-name {
  margin: 0 0 var(--s-3) 0;
  line-height: 1.05;
}
/* Override gradient text on the hero name only — keep solid for legibility */
.hero-name name {
  font-size: clamp(32px, 4vw, 48px); /* compact hero: keep the name to one line */
  background: none;
  -webkit-text-fill-color: var(--text);
  color: var(--text);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.55),
               0 0 18px rgba(0, 0, 0, 0.5);
}
.hero-tagline {
  margin: 0 auto var(--s-4) auto;
  max-width: 600px;
  font-family: var(--ff-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 500;
  letter-spacing: -0.005em;
  color: #e5e7eb;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.55);
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--s-3);
}
/* Glassmorph fill on hero outline buttons so they read against the bright scene */
.hero-cta .btn-outline {
  background: rgba(19, 19, 27, 0.6);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-color: var(--border-strong);
  color: var(--text);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}
.hero-cta .btn-outline:hover {
  background: rgba(19, 19, 27, 0.8);
  border-color: rgba(56, 189, 248, 0.45);
}
.hero-scroll-cue {
  position: absolute;
  bottom: var(--s-6);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  font-size: 18px;
  background: rgba(19, 19, 27, 0.7);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
}
.hero-scroll-cue:hover { color: var(--accent); border-color: var(--accent); }
@media (prefers-reduced-motion: no-preference) {
  .hero-scroll-arrow {
    display: inline-block;
    animation: scroll-bob 2.4s var(--ease-out) infinite;
  }
}
@keyframes scroll-bob {
  0%, 100% { transform: translateY(0); opacity: 0.85; }
  50%      { transform: translateY(4px); opacity: 1; }
}

@media (max-width: 768px) {
  .hero { min-height: 24vh; padding: var(--s-6) var(--s-4) var(--s-8); }
  .hero-scroll-cue { bottom: var(--s-4); }
}

/* -------------------- Sections -------------------- */
.section {
  padding-block: var(--s-7);
  position: relative;
}
.section + .section { border-top: 1px solid var(--border); }
.section-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding-left: var(--s-4);
  padding-right: var(--s-4);
}
.section-blurb {
  color: var(--muted);
  font-size: var(--fs-sm);
  margin: -8px 0 var(--s-6) 0;
}
@media (max-width: 768px) {
  .section { padding-block: 40px; }
}

/* Anchor offset for sticky header */
:target,
[id] { scroll-margin-top: 80px; }

/* -------------------- About -------------------- */
.section-about {
  position: relative;
  overflow: hidden;
}
.section-about .section-inner {
  position: relative;
  z-index: 1;
}
.about-frieze {
  position: absolute;
  inset: auto 0 12% 0;
  height: 110px;
  z-index: 0;
  opacity: 0.10;
  pointer-events: none;
  color: var(--scene-forest);
  overflow: hidden;
}
.about-frieze .frieze-horizon {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: rgba(56, 189, 248, 0.4);
}
.about-frieze .boat {
  position: absolute;
  top: 50%;
  left: 0;
  display: block;
  /* Default static placement (reduced-motion fallback): boat-a near 30%, boat-b near 65% */
  transform: translate(30vw, -85%);
}
.about-frieze .boat-a {
  width: 24px;
  height: 28px;
}
.about-frieze .boat-b {
  width: 18px;
  height: 22px;
  transform: translate(65vw, -85%);
}
@media (prefers-reduced-motion: no-preference) {
  .about-frieze .boat-a {
    animation: drift-a 120s linear infinite;
  }
  .about-frieze .boat-b {
    animation: drift-b 180s linear infinite;
    animation-delay: -54s;
  }
}
@keyframes drift-a {
  from { transform: translate(-10vw, -85%); }
  to   { transform: translate(110vw, -85%); }
}
@keyframes drift-b {
  from { transform: translate(-10vw, -85%); }
  to   { transform: translate(110vw, -85%); }
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-6);
  align-items: start;
}
@media (min-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr 280px;
    gap: var(--s-7);
  }
}
.about-text p { color: var(--text); }
.about-text a { color: var(--accent); }
.about-collab {
  margin-top: var(--s-5);
  padding-top: var(--s-4);
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: var(--fs-sm);
}
.about-collab strong { color: var(--text); }
.about-photo {
  justify-self: start;
}
.about-photo img {
  width: 100%;
  max-width: 280px;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 20px;
  border: 1px solid var(--border);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.4);
  transition: transform .25s var(--ease-out), box-shadow .25s var(--ease-out);
}
@media (prefers-reduced-motion: no-preference) {
  .about-photo img:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 50px rgba(56, 189, 248, 0.18);
  }
}

/* -------------------- Selected Research cards -------------------- */
.paper-card {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--s-6);
  align-items: start;
  padding: var(--s-5);
  margin-bottom: var(--s-5);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: transform .2s var(--ease-out),
              border-color .2s var(--ease-out),
              box-shadow .2s var(--ease-out);
}
.paper-card:hover {
  border-color: rgba(56, 189, 248, 0.25);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.3),
              0 0 0 1px rgba(56, 189, 248, 0.18) inset;
}
@media (prefers-reduced-motion: no-preference) {
  .paper-card:hover { transform: translateY(-4px); }
}
.paper-media {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 12px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
}
.paper-media img,
.paper-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  display: block;
  box-shadow: none;
}
.paper-text > a { color: var(--text); }
.paper-text > a:hover { color: var(--accent); }
.paper-authors {
  margin: var(--s-2) 0 var(--s-1) 0;
  font-size: var(--fs-sm);
  color: var(--muted);
  line-height: 1.6;
}
.paper-authors a { color: #cbd5e1; }
.paper-authors a:hover { color: var(--accent-2); }
.paper-authors strong { color: var(--text); }
.paper-venue {
  margin: 0 0 var(--s-3) 0;
  font-size: var(--fs-sm);
  color: var(--muted);
}
.paper-venue em { color: var(--text); font-style: italic; }
.paper-summary {
  margin: 0 0 var(--s-3) 0;
  color: var(--text);
}
.paper-links {
  margin: 0;
  font-size: var(--fs-sm);
}
.paper-links a { color: var(--accent); }
.paper-links .sep,
.pub-links .sep,
.footer-socials .sep {
  color: var(--muted);
  margin: 0 6px;
}

@media (max-width: 768px) {
  .paper-card {
    grid-template-columns: 1fr;
    padding: var(--s-4);
  }
  .paper-media {
    max-width: 360px;
    margin: 0 auto;
  }
}

.highlight-amber {
  color: var(--accent-2);
  font-weight: 600;
}

/* -------------------- All Publications (compact) -------------------- */
.pub-list {
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}
.pub-item {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: var(--s-4);
  align-items: start;
  padding: var(--s-3);
  border: 1px solid transparent;
  border-radius: 12px;
  transition: background .2s var(--ease-out),
              border-color .2s var(--ease-out),
              transform .2s var(--ease-out);
}
.pub-item:hover {
  background: rgba(255, 255, 255, 0.025);
  border-color: var(--border);
}
@media (prefers-reduced-motion: no-preference) {
  .pub-item:hover { transform: translateX(2px); }
}
.pub-thumb {
  display: block;
  width: 96px;
  height: 96px;
  border-radius: 10px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
}
.pub-thumb img,
.pub-thumb video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  display: block;
  box-shadow: none;
}
.pub-body { min-width: 0; }
.pub-body > a { color: var(--text); }
.pub-body > a:hover { color: var(--accent); }
.pub-authors {
  margin: 4px 0;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}
.pub-authors a { color: #cbd5e1; }
.pub-authors a:hover { color: var(--accent-2); }
.pub-authors strong { color: var(--text); }
.pub-meta {
  margin: 0;
  font-size: 13px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-3);
}
.venue-chip {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.18);
  color: #cbd5e1;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
}
.pub-links { color: var(--muted); }
.pub-links a { color: var(--accent); }

@media (max-width: 768px) {
  .pub-item {
    grid-template-columns: 64px 1fr;
    gap: var(--s-3);
  }
  .pub-thumb {
    width: 64px;
    height: 64px;
  }
}

/* -------------------- News -------------------- */
.news-list,
.news-older {
  list-style: none;
  padding-left: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  font-size: var(--fs-md);
  color: var(--text);
}
.news-list li {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: var(--s-4);
  padding: var(--s-3) var(--s-4);
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.015);
  align-items: start;
  color: var(--text);
}
.news-list li > .news-text {
  color: var(--text);
  line-height: 1.55;
}
.news-date {
  font-family: var(--ff-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  white-space: nowrap;
}
.news-more {
  margin-top: var(--s-4);
}
.news-more > summary {
  cursor: pointer;
  font-size: var(--fs-sm);
  color: var(--accent);
  padding: var(--s-2) 0;
  list-style: none;
  user-select: none;
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
}
.news-more > summary::-webkit-details-marker { display: none; }
.news-more > summary::before {
  content: '+ ';
  display: inline-block;
  width: 1em;
  font-family: var(--ff-mono);
  color: var(--accent);
}
.news-more[open] > summary::before { content: '− '; }
.news-more > summary:hover { color: var(--accent-2); }
.news-older { margin-top: var(--s-3); }

@media (max-width: 600px) {
  .news-list li {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

/* -------------------- Plain link lists (Teaching, Media, Awards) -------------------- */
.link-list {
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  font-size: var(--fs-md);
}
.link-list li {
  padding: var(--s-3) var(--s-4);
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.015);
  transition: background .2s var(--ease-out),
              border-color .2s var(--ease-out),
              transform .2s var(--ease-out);
}
.link-list li:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(56, 189, 248, 0.22);
}
/* Row-as-link items read as content first, accent only on hover */
.link-list li > a {
  color: var(--text);
  display: inline-block;
}
.link-list li > a:hover {
  color: var(--accent);
}
@media (prefers-reduced-motion: no-preference) {
  .link-list li:hover { transform: translateX(2px); }
}

/* -------------------- Footer -------------------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--s-7) var(--s-4) var(--s-6);
  margin-top: var(--s-7);
  text-align: center;
  font-size: var(--fs-sm);
  color: var(--muted);
}
.footer-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  align-items: center;
}
.footer-socials {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--s-2);
  font-size: var(--fs-md);
}
.footer-socials a { color: var(--text); }
.footer-socials a:hover { color: var(--accent-2); }
.footer-email a { color: #cbd5e1; }
.footer-attr {
  margin-top: var(--s-3);
  font-size: 12px;
  color: var(--muted);
}

/* -------------------- Email reveal (anti-scrape) -------------------- */
.email-reveal-wrap {
  display: inline-flex;
}
.email-reveal {
  font-family: var(--ff-body);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
}
/* Hero CTA variant — inherits .btn-outline glassmorph treatment via
   `.hero-cta .btn-outline` rule. Nothing extra needed here. */

/* Footer compact variant — quieter, smaller. */
.email-reveal-compact {
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 6px 14px;
  color: #cbd5e1;
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: background .2s var(--ease-out),
              border-color .2s var(--ease-out),
              color .2s var(--ease-out);
}
.email-reveal-compact:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border-color: rgba(56, 189, 248, 0.35);
}
.email-reveal-compact:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Once revealed, the control is a live mailto link, not a button —
   adjust hover affordance accordingly. */
.email-reveal-revealed {
  cursor: pointer;
}
.email-reveal-revealed.btn-outline:hover .email-icon,
.email-reveal-compact.email-reveal-revealed:hover .email-icon {
  color: var(--accent);
}

.email-icon {
  font-size: 0.95em;
  line-height: 1;
}

.email-copied {
  margin-left: var(--s-2);
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.18);
  border: 1px solid rgba(56, 189, 248, 0.4);
  color: var(--accent);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: opacity .4s var(--ease-out);
}
.email-copied-fade {
  opacity: 0;
}
@media (prefers-reduced-motion: reduce) {
  .email-copied { transition: none; }
}

/* -------------------- Reveal animation -------------------- */
.reveal {
  opacity: 0;
}
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    transform: translateY(12px);
    transition: opacity .5s var(--ease-out), transform .5s var(--ease-out);
  }
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* -------------------- Highlight legacy class -------------------- */
span.highlight {
  background-color: rgba(245, 158, 11, 0.15);
}