/* =========================================================
   Vishal Chauhan — personal site
   Editorial-academic. Real figures, restrained type.
   v2: bigger portrait + dark mode (ball mode) toggle
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,500;0,8..60,600;1,8..60,400;1,8..60,500&family=Source+Sans+3:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

/* ---------- LIGHT THEME (default) ---------- */
:root {
  --paper:        #FFFFFF;
  --ink:          #1A1916;
  --ink-soft:     #4A4843;
  --ink-faint:    #8A8780;
  --rule:         #E2E0DA;
  --rule-soft:    #EFEDE8;
  --accent:       #4A6D5C;        /* muted forest-green; calm, academic */
  --accent-soft:  #6E8F80;
  --highlight:    #C8B273;        /* warm gold for the Honourable Mention badge */

  /* surface tints (callouts, console card, thumbnails) */
  --surface-tint:        #FAF8F3;
  --surface-soft:        #FDFCF8;
  --surface-bar:         #F0EDE5;
  --surface-thumb:       #F4F1E9;
  --surface-thumb-grad1: #F4F2EC;
  --surface-thumb-grad2: #E8E4D9;

  /* award badge */
  --badge-ink:    #6B5A1F;
  --badge-bg:     rgba(200, 178, 115, 0.18);
  --badge-border: rgba(200, 178, 115, 0.5);

  --serif:        "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans:         "Source Sans 3", -apple-system, system-ui, sans-serif;
  --mono:         "JetBrains Mono", "SF Mono", Menlo, monospace;
  --measure:      62ch;
  --max:          1100px;
  --pad-x:        clamp(1.25rem, 4vw, 2.5rem);
  --t-fast:       180ms;
  --t-med:        320ms;
}

/* ---------- DARK THEME (ball mode) ----------
   Same warm, editorial feel — like the site at dusk.
   Forest-green accent brightens slightly so it still reads. */
[data-theme="dark"] {
  --paper:        #15120E;
  --ink:          #ECE6D7;
  --ink-soft:     #B5AE9F;
  --ink-faint:    #7A7466;
  --rule:         #2D2920;
  --rule-soft:    #211E17;
  --accent:       #A3C2B0;
  --accent-soft:  #7A9D8A;
  --highlight:    #D4BC7F;

  --surface-tint:        #1E1A13;
  --surface-soft:        #1B1812;
  --surface-bar:         #25211A;
  --surface-thumb:       #1F1C15;
  --surface-thumb-grad1: #25211A;
  --surface-thumb-grad2: #1B1812;

  --badge-ink:    #D4BC7F;
  --badge-bg:     rgba(200, 178, 115, 0.12);
  --badge-border: rgba(200, 178, 115, 0.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.62;
  font-feature-settings: "kern", "liga", "calt";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.25s ease, color 0.25s ease;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 500;
  font-style: italic;
  color: var(--ink);
  letter-spacing: -0.01em;
  line-height: 1.18;
  margin: 0 0 0.6em;
}
h1 { font-size: clamp(2.3rem, 5vw, 3.6rem); font-weight: 500; }
h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); margin-top: 0; }
h3 { font-size: 1.2rem; font-weight: 600; font-style: normal; letter-spacing: 0.01em; }
h4 { font-size: 1.02rem; font-weight: 600; font-style: normal; letter-spacing: 0.02em; text-transform: uppercase; color: var(--ink-soft); }

p { margin: 0 0 1em; max-width: var(--measure); }
em, i { font-family: var(--serif); font-style: italic; }
strong { font-weight: 600; color: var(--ink); }

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--rule);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--t-fast), text-decoration-color var(--t-fast);
}
a:hover { color: var(--accent); text-decoration-color: var(--accent); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
::selection { background: var(--accent); color: var(--paper); }

/* skip link */
.skip-link {
  position: absolute; left: -10000px; top: 1rem;
  background: var(--ink); color: var(--paper); padding: 0.6rem 1rem;
  text-decoration: none; border-radius: 4px; z-index: 100;
}
.skip-link:focus { left: 1rem; }

/* ---------- layout ---------- */
.container {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

section {
  padding: clamp(3rem, 7vw, 5rem) 0;
  border-top: 1px solid var(--rule-soft);
}
section:first-of-type { border-top: 0; }

.section-eyebrow {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 0.6rem;
  font-weight: 500;
}

/* ---------- header / nav ---------- */
header.site {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--rule-soft);
}
header.site .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}
header.site .brand {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  font-size: 1.1rem;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}
header.site .brand:hover { color: var(--accent); }

/* wrap nav + theme toggle together on the right */
.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

nav.primary ul {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  gap: clamp(1rem, 2.5vw, 2rem);
  flex-wrap: wrap;
  justify-content: flex-end;
}
nav.primary a {
  font-family: var(--sans);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--ink-soft);
  letter-spacing: 0.01em;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
}
nav.primary a:hover,
nav.primary a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

/* ---------- theme toggle (ball mode) ---------- */
.theme-toggle {
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 999px;
  width: 36px;
  height: 36px;
  padding: 0;
  cursor: pointer;
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast), transform var(--t-fast);
}
.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.theme-toggle:active { transform: scale(0.95); }
.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.theme-toggle svg {
  width: 16px;
  height: 16px;
  display: block;
}
/* show moon in light mode (click → go dark); show sun in dark mode */
.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun  { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

@media (max-width: 640px) {
  nav.primary ul { gap: 0.75rem 1.1rem; }
  nav.primary a { font-size: 0.86rem; }
  .header-right { gap: 0.75rem; }
}

/* ---------- hero ----------
   Portrait was 290px. Now 360px — about 24% bigger.
   To tune: change BOTH lines below (--portrait-w idea kept inline). */
.hero {
  padding-top: clamp(3rem, 7vw, 5rem);
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
}
.hero-grid {
  display: grid;
  grid-template-columns: 480px 1fr;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: center;
}
.portrait {
  width: 480px; height: auto;
  border-radius: 2px;
  display: block;
  filter: saturate(0.95);
}
[data-theme="dark"] .portrait {
  filter: saturate(0.9) brightness(0.92);
}
.hero h1 {
  margin: 0 0 0.4rem;
  font-style: italic;
  letter-spacing: -0.015em;
}
.hero .role {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--ink-soft);
  margin: 0 0 0.3rem;
}
.hero .affil {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.02rem;
  color: var(--ink-soft);
  max-width: 38ch;
  line-height: 1.5;
  margin-bottom: 1.3rem;
}
.hero .affil a { color: var(--ink-soft); }
.hero .affil a:hover { color: var(--accent); }

.keyword-row {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
.keyword-row li {
  font-family: var(--mono);
  font-size: 0.73rem;
  letter-spacing: 0.04em;
  padding: 4px 11px;
  border: 1px solid var(--rule);
  border-radius: 3px;
  color: var(--ink-soft);
  background: transparent;
  white-space: nowrap;
  line-height: 1.4;
  cursor: default;
  transition: transform var(--t-fast) ease,
              border-color var(--t-fast),
              color var(--t-fast),
              background var(--t-fast),
              box-shadow var(--t-fast);
  opacity: 0;
  animation: chipFadeIn 0.55s ease forwards;
}
.keyword-row li:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  color: var(--ink);
  background: var(--surface-tint);
  box-shadow: 0 2px 6px rgba(74, 109, 92, 0.12);
}
.keyword-row li:nth-child(1) { animation-delay: 0.15s; }
.keyword-row li:nth-child(2) { animation-delay: 0.22s; }
.keyword-row li:nth-child(3) { animation-delay: 0.29s; }
.keyword-row li:nth-child(4) { animation-delay: 0.36s; }
.keyword-row li:nth-child(5) { animation-delay: 0.43s; }
.keyword-row li:nth-child(6) { animation-delay: 0.50s; }
@keyframes chipFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- hero cursor glow ----------
   A soft accent-coloured spotlight that follows the cursor across the hero.
   The position is set via the --mx/--my custom properties from JavaScript.
   Falls back to a static gradient when prefers-reduced-motion is on. */
.hero {
  position: relative;
  isolation: isolate;
  --mx: 50%;
  --my: 50%;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background: radial-gradient(
    520px circle at var(--mx) var(--my),
    color-mix(in srgb, var(--accent) 14%, transparent) 0%,
    transparent 60%
  );
  opacity: 0;
  transition: opacity 0.4s ease;
}
.hero.is-hovered::before { opacity: 1; }
@media (prefers-reduced-motion: reduce) {
  .keyword-row li {
    opacity: 1;
    animation: none;
    transition: none;
  }
  .keyword-row li:hover { transform: none; box-shadow: none; }
  .hero::before { display: none; }
}

@media (max-width: 760px) {
  .hero-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .portrait { width: 320px; }
}

/* hero scene illustration */
.hero-scene {
  margin: clamp(2rem, 4vw, 3.25rem) auto 0;
  max-width: 560px;
  color: var(--accent);
}
.hero-scene svg {
  width: 100%;
  height: auto;
  display: block;
}
@media (max-width: 700px) {
  .hero-scene { margin-top: 1.5rem; }
}

/* lead intro */
.lead {
  font-family: var(--serif);
  font-size: clamp(1.15rem, 1.8vw, 1.32rem);
  line-height: 1.55;
  color: var(--ink);
  max-width: 36em;
  margin: 0 0 1.5em;
}
.lead em { color: var(--accent); font-style: italic; }

/* ---------- research threads ---------- */
.thread {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
  margin: 2.5rem 0;
}
.thread:nth-of-type(even) .thread-text { order: 2; }
.thread:nth-of-type(even) .thread-figure { order: 1; }
.thread-text h3 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}
.thread-text p {
  max-width: none;
  margin-bottom: 0.6em;
}
.thread-text .stat {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--accent);
  display: block;
  margin: 0.4rem 0 0.8rem;
}
.thread-figure { margin: 0; }
.thread-figure img {
  width: 100%; height: auto;
  display: block;
  border: 1px solid var(--rule);
  border-radius: 2px;
  background: var(--paper);
}
.thread-figure figcaption {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
  margin-top: 0.5rem;
  line-height: 1.4;
}
@media (max-width: 760px) {
  .thread { grid-template-columns: 1fr; gap: 1.25rem; }
  .thread:nth-of-type(even) .thread-text { order: 0; }
  .thread:nth-of-type(even) .thread-figure { order: 0; }
}

/* ---------- video card ---------- */
.video-block {
  margin: 2.5rem auto 0;
  max-width: 880px;
}
.video-frame {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  height: 0;
  border: 1px solid var(--rule);
  border-radius: 2px;
  overflow: hidden;
  background: #000;
}
.video-frame iframe {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  border: 0;
}
.video-card {
  display: block;
  position: relative;
  max-width: 760px;
  margin: 2.5rem auto 0;
  border: 1px solid var(--rule);
  border-radius: 2px;
  overflow: hidden;
  text-decoration: none;
  background: #000;
  transition: transform var(--t-fast);
}
.video-card img {
  width: 100%;
  height: auto;
  display: block;
  opacity: 0.92;
  transition: opacity var(--t-fast);
}
.video-card:hover img,
.video-card:focus-visible img { opacity: 1; }
.video-card .video-play {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 72px;
  height: 72px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  padding-left: 5px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
  transition: background var(--t-fast), color var(--t-fast);
}
.video-card:hover .video-play,
.video-card:focus-visible .video-play {
  background: var(--accent);
  color: #fff;
}
.video-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.video-caption {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0.7rem 0 0;
  text-align: center;
}

/* ---------- publications ---------- */
.pub-list { margin: 1.5rem 0 0; }
.pub {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: clamp(1.25rem, 3vw, 2rem);
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--rule-soft);
  align-items: start;
}
.pub:last-child { border-bottom: 0; }
.pub.pub-text { grid-template-columns: 1fr; }
.pub.pub-text .pub-body { padding-left: 0; }

.pub-thumb {
  margin: 0;
  background: var(--surface-tint);
  border: 1px solid var(--rule);
  border-radius: 2px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pub-thumb img {
  width: 100%; height: 100%; object-fit: contain; display: block;
}
.pub-thumb.placeholder {
  background: linear-gradient(135deg, var(--surface-thumb-grad1) 0%, var(--surface-thumb-grad2) 100%);
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 1rem;
  text-align: center;
}

.pub-body h3 {
  margin: 0 0 0.3rem;
  font-size: 1.08rem;
  font-style: normal;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0;
}
.pub-body h3 a { text-decoration: none; color: var(--ink); }
.pub-body h3 a:hover { color: var(--accent); }
.pub-authors {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0 0 0.35rem;
  line-height: 1.5;
}
.pub-authors .me { color: var(--ink); font-weight: 600; }
.pub-venue {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin: 0 0 0.5rem;
}
.pub-blurb {
  font-size: 0.93rem;
  color: var(--ink-soft);
  margin: 0 0 0.5rem;
  max-width: none;
  line-height: 1.55;
}
.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.8rem;
  font-family: var(--mono);
  font-size: 0.78rem;
}
.pub-links a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-soft);
  padding-bottom: 1px;
}
.pub-links a:hover { color: var(--ink); border-color: var(--ink); }
.pub-links .sep { color: var(--ink-faint); }

.award-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--badge-ink);
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  padding: 2px 8px;
  border-radius: 2px;
  margin-left: 0.5rem;
  vertical-align: 2px;
  white-space: nowrap;
}

.see-all {
  margin-top: 1.75rem;
  font-family: var(--serif);
  font-style: italic;
  font-size: 1rem;
}
.see-all a {
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
}
.see-all a:hover { color: var(--accent); border-color: var(--accent); }

@media (max-width: 600px) {
  .pub { grid-template-columns: 1fr; }
  .pub-thumb { aspect-ratio: 16 / 9; max-width: 100%; }
}

/* ---------- publications page (year groups) ---------- */
.year-group { margin: 2rem 0 3rem; }
.year-group h2 {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: 2.2rem;
  color: var(--accent);
  margin: 0 0 0.5rem;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.5rem;
}

/* ---------- recent / news ---------- */
.news-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  max-width: 60ch;
}
.news-list li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 1rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--rule-soft);
  align-items: baseline;
  font-size: 0.96rem;
  line-height: 1.5;
}
.news-list li:last-child { border-bottom: 0; }
.news-date {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
@media (max-width: 500px) {
  .news-list li { grid-template-columns: 1fr; gap: 0.2rem; }
}

/* ---------- collaborators ---------- */
.collab-group {
  margin: 2.25rem 0;
  max-width: 60ch;
}
.collab-group h4 {
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  font-weight: 600;
  margin: 0 0 1rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--rule-soft);
}
.collab-list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.55;
}
.collab-list li {
  padding: 0.5rem 0;
  color: var(--ink-soft);
}
.collab-list li strong { color: var(--ink); font-weight: 600; }
.collab-list.collab-single { columns: 1; }
@media (min-width: 800px) {
  .collab-list.collab-single { columns: 2; column-gap: 3rem; }
  .collab-list.collab-single li { break-inside: avoid; }
  .collab-group:has(.collab-list li:nth-child(4)) .collab-list { columns: 2; }
  .collab-group:not(:has(.collab-list li:nth-child(4))) .collab-list { columns: 1; }
}

/* ---------- teaching ---------- */
.teaching-item {
  padding: 1rem 0;
  border-bottom: 1px solid var(--rule-soft);
}
.teaching-item:last-child { border-bottom: 0; }
.teaching-item h3 {
  margin: 0 0 0.2rem;
  font-size: 1.05rem;
  font-style: normal;
  font-weight: 600;
}
.teaching-meta {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  margin: 0 0 0.4rem;
}
.teaching-item p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

/* ---------- research framework (stack) ---------- */
.research-mark {
  margin: 2rem 0 2.5rem;
  font-family: var(--serif);
  font-size: clamp(1.1rem, 2.2vw, 1.45rem);
  font-style: italic;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
  flex-wrap: wrap;
  padding: 0.5rem 0.85rem 0.55rem;
  border-top: 1px solid var(--rule-soft);
  border-bottom: 1px solid var(--rule-soft);
  line-height: 1.3;
}
.research-mark .rm-x {
  font-family: var(--mono);
  font-style: normal;
  font-weight: 300;
  font-size: 1.15em;
  color: var(--accent);
  display: inline-block;
  transform: translateY(-2px) rotate(-4deg);
  margin: 0 0.05rem;
  opacity: 0.85;
}
@media (max-width: 600px) {
  .research-mark { font-size: 1.05rem; gap: 0.4rem; }
}
.research-stack {
  margin-top: 2.5rem;
  max-width: 72ch;
}
.stack-layer {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 1.5rem;
  padding: 1.75rem 0 2rem;
  border-bottom: 1px solid var(--rule-soft);
  position: relative;
}
.stack-layer:last-child { border-bottom: 0; padding-bottom: 0.5rem; }
.stack-num {
  font-family: var(--mono);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.02em;
  padding-top: 6px;
  line-height: 1;
  align-self: start;
}
.stack-content { min-width: 0; }
.stack-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0 0 0.4rem;
  font-weight: 600;
}
.stack-layer h3 {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.35rem, 2.2vw, 1.55rem);
  margin: 0 0 0.65rem;
  color: var(--ink);
  line-height: 1.25;
}
.stack-layer p {
  font-size: 1rem;
  line-height: 1.62;
  color: var(--ink-soft);
  max-width: 56ch;
  margin: 0 0 0.7rem;
}
.stack-evidence {
  font-family: var(--mono);
  font-size: 0.8rem !important;
  color: var(--ink-faint) !important;
  margin-top: 0.6rem !important;
  letter-spacing: 0.01em;
  line-height: 1.55 !important;
}
.stack-evidence em {
  color: var(--ink-soft);
  font-style: italic;
}
@media (max-width: 600px) {
  .stack-layer {
    grid-template-columns: 1fr;
    gap: 0.5rem;
    padding: 1.25rem 0 1.5rem;
  }
  .stack-num { font-size: 1.25rem; padding-top: 0; }
}

/* ---------- vantage point / research context ---------- */
.research-context {
  margin: 2.5rem 0 0;
  padding: 1rem 1.25rem 1.05rem;
  font-family: var(--sans);
  font-size: 0.93rem;
  line-height: 1.6;
  color: var(--ink-soft);
  background: var(--surface-tint);
  border-left: 2px solid var(--accent);
  border-radius: 0 2px 2px 0;
  max-width: 65ch;
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  flex-wrap: wrap;
}
.research-context strong {
  font-family: var(--mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 600;
}
.context-mark {
  color: var(--accent);
  font-size: 0.78rem;
  flex-shrink: 0;
}

/* ---------- hero tagline + now-line ---------- */
.hero-tagline {
  font-family: var(--serif);
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 48ch;
  margin: 1rem 0 1.25rem;
  font-style: normal;
}
.hero-tagline em {
  color: var(--accent);
  font-style: italic;
}
.now-line {
  font-family: var(--sans);
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 60ch;
  margin: 1.5rem 0 0;
  padding: 0.85rem 1rem;
  background: var(--surface-tint);
  border-left: 2px solid var(--accent);
  border-radius: 0 2px 2px 0;
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
}
.now-line strong {
  font-family: var(--mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 600;
}
.now-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  position: relative;
  top: -1px;
  flex-shrink: 0;
  animation: pulse 2.5s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

/* ---------- talks list ---------- */
.talks-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  max-width: 65ch;
}
.talks-list li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 1.5rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--rule-soft);
  font-size: 0.97rem;
  line-height: 1.55;
}
.talks-list li:last-child { border-bottom: 0; }
.talks-date {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
  letter-spacing: 0.03em;
  padding-top: 3px;
}
@media (max-width: 600px) {
  .talks-list li { grid-template-columns: 1fr; gap: 0.15rem; }
}

/* ---------- contact (console-style) ---------- */
.contact-console {
  max-width: 720px;
  margin: 1.5rem 0 0;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--surface-soft);
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.console-header {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.85rem;
  background: var(--surface-bar);
  border-bottom: 1px solid var(--rule-soft);
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ink-faint);
  letter-spacing: 0.02em;
}
.console-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--rule);
}
.console-dot:nth-child(1) { background: #E27D60; }
.console-dot:nth-child(2) { background: #E8C547; }
.console-dot:nth-child(3) { background: var(--accent); }
.console-title {
  margin-left: 0.6rem;
  font-size: 0.78rem;
}
.console-body {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 0.7rem 1.5rem;
  margin: 0;
  padding: 1.2rem 1.4rem 1.3rem;
  font-family: var(--mono);
  font-size: 0.86rem;
  line-height: 1.65;
}
.console-body dt {
  color: var(--ink-faint);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding-top: 4px;
}
.console-body dt::before {
  content: "▸ ";
  color: var(--accent);
  margin-right: 2px;
}
.console-body dd {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 0.95rem;
  line-height: 1.55;
}
.console-body dd a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
}
.console-body dd a:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.console-body .sep {
  color: var(--ink-faint);
  margin: 0 0.15rem;
}
.console-body .email-meta {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ink-faint);
  letter-spacing: 0.02em;
  margin-left: 0.25rem;
}
.live-time {
  font-family: var(--mono);
  font-weight: 600;
  color: var(--accent);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}
.time-zone {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
  margin-left: 0.3rem;
}
.coords {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
  margin-left: 0.3rem;
}
@media (max-width: 560px) {
  .console-body { grid-template-columns: 1fr; gap: 0.2rem 0; }
  .console-body dt { padding-top: 0.5rem; }
  .console-body dt:first-of-type { padding-top: 0; }
}

/* ---------- footer ---------- */
footer.site {
  border-top: 1px solid var(--rule-soft);
  padding: 2rem 0 3rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  text-align: center;
}

/* ---------- small bits ---------- */
.cv-link {
  display: inline-block;
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.02rem;
  margin-top: 1rem;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--accent);
  text-decoration: none;
  color: var(--ink);
}
.cv-link:hover { color: var(--accent); }

hr.thin {
  border: 0;
  border-top: 1px solid var(--rule-soft);
  margin: 2.5rem 0;
}

/* ---------- print ---------- */
@media print {
  header.site, footer.site, .video-block, .cv-link, .theme-toggle { display: none; }
  body { background: white !important; color: black !important; font-size: 11pt; }
  section { padding: 1rem 0; border-top: 1px solid #ccc; }
  a { color: black; text-decoration: none; }
  .pub { break-inside: avoid; }
  .pub-thumb { display: none; }
  .pub { grid-template-columns: 1fr; }
}

/* ---------- moments page ---------- */
#moments h1 {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(2.2rem, 4vw, 3rem);
  letter-spacing: -0.01em;
  margin: 0.25rem 0 1.25rem;
  color: var(--ink);
}
.featured-block {
  margin: 2.5rem 0 3rem;
  max-width: 65ch;
}
.featured-block h4 {
  font-family: var(--mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  font-weight: 600;
  margin: 0 0 1rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--rule-soft);
}
.featured-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.featured-list li {
  padding: 0.65rem 0;
  font-size: 0.97rem;
  line-height: 1.55;
  border-bottom: 1px solid var(--rule-soft);
}
.featured-list li:last-child { border-bottom: 0; }
.featured-list a {
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1px;
}
.featured-list a:hover { color: var(--accent); border-color: var(--accent); }
.featured-meta {
  color: var(--ink-faint);
  font-family: var(--sans);
  font-size: 0.92rem;
  margin-left: 0.3rem;
}
.moments-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
  margin: 2rem 0 3rem;
}
.moment-tile { margin: 0; }
.moment-photo {
  aspect-ratio: 3 / 2;
  background: var(--surface-thumb);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}
.moment-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.moment-photo img:not([src]),
.moment-photo img[src=""],
.moment-photo img[src$="/"] { visibility: hidden; }
.moment-tile figcaption {
  margin-top: 0.75rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--ink-faint);
  letter-spacing: 0.01em;
}
.moment-tile figcaption strong {
  display: block;
  color: var(--ink);
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.08rem;
  font-weight: 400;
  margin-bottom: 0.15rem;
}
@media (max-width: 600px) {
  .moments-grid { gap: 1.5rem; }
}