/* ═══════════════════════════════════════════════════════
   Dvija Mehta — Shared Stylesheet
   Pages: index · writing · appearances · contact
═══════════════════════════════════════════════════════ */

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

:root {
  --bg:        #eaf3fa;
  --bg-alt:    #ddeef7;
  --bg-card:   #f4f9fd;
  --bg-dark:   #f5f2ee;
  --bg-dark2:  #cde9f7;
  --bg-talks:  #ddeef7;
  --ink:       #0f1e2c;
  --ink-60:    rgba(15,30,44,0.60);
  --ink-30:    rgba(15,30,44,0.30);
  --ink-12:    rgba(15,30,44,0.12);
  --ink-06:    rgba(15,30,44,0.06);
  --light:     #eaf3fa;
  --light-60:  rgba(234,243,250,0.60);
  --light-30:  rgba(234,243,250,0.30);
  --light-10:  rgba(234,243,250,0.10);
  --blue:      #1a6a8e;
  --blue-lt:   #2a9ac4;
  --blue-pale: rgba(26,106,142,0.08);
  --blue-glow: rgba(26,106,142,0.14);
  --serif:     'Cormorant Garamond', serif;
  --sans:      'Space Grotesk', sans-serif;
}

html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  overflow-x: hidden;
  cursor: none;
}
::selection { background: var(--blue-pale); color: var(--blue); }

/* ─── CURSOR ─── */
#c-dot {
  position: fixed; width: 6px; height: 6px;
  background: var(--blue); border-radius: 50%;
  pointer-events: none; z-index: 10001;
  margin: -3px 0 0 -3px; opacity: 0;
  transition: opacity 0.3s;
}
#c-ring {
  position: fixed; width: 38px; height: 38px;
  border: 1.5px solid var(--blue); border-radius: 50%;
  pointer-events: none; z-index: 10000;
  margin: -19px 0 0 -19px; opacity: 0;
  transition:
    width .4s cubic-bezier(.16,1,.3,1),
    height .4s cubic-bezier(.16,1,.3,1),
    margin .4s cubic-bezier(.16,1,.3,1),
    background .4s, border-color .4s, opacity .3s;
}
#c-ring.active { opacity: 1; }
#c-dot.active  { opacity: 1; }
#c-ring.expand {
  width: 72px; height: 72px; margin: -36px 0 0 -36px;
  background: var(--blue-pale); border-color: var(--blue-lt);
}
#c-ring.on-dark { border-color: rgba(15,30,44,.45); }

/* ─── PRELOADER ─── */
.preloader {
  position: fixed; inset: 0; z-index: 9999;
  background: #182c3e;
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 2rem;
}
.pre-name {
  font-family: var(--serif); font-size: clamp(2rem,5vw,3.5rem);
  font-weight: 300; color: #eaf3fa;
  letter-spacing: .3em; text-transform: uppercase; overflow: hidden;
   line-height: 50px;
 
}
.pre-name span {
  display: inline-block;
  transform: translateY(110%);
  animation: preUp .9s cubic-bezier(.16,1,.3,1) .2s forwards;
   line-height: 50px;
}
.pre-line {
  width: 0; height: 1px; background: var(--blue-lt);
  animation: preW 1.8s cubic-bezier(.16,1,.3,1) .5s forwards;
   line-height: 50px;
}
.preloader.out { animation: preOut .9s cubic-bezier(.65,0,.35,1) forwards; }

@keyframes preUp  { to { transform: translateY(0); } }
@keyframes preW   { to { width: 140px; } }
@keyframes preOut {
  0%   { clip-path: inset(0); }
  100% { clip-path: inset(0 0 100% 0); }
}

/* ─── SIDE NAV ─── */
.side-nav {
  position: fixed; left: 0; top: 0; bottom: 0;
  width: 68px; z-index: 200;
  display: flex; flex-direction: column;
  align-items: center; justify-content: space-between;
  padding: 2rem 0;
  border-right: 1px solid var(--ink-06);
  background: rgba(234,243,250,.88);
  backdrop-filter: blur(10px);
}
.side-logo {
  font-family: var(--serif); font-weight: 600; font-size: 1rem;
  color: var(--ink); writing-mode: vertical-rl;
  text-orientation: mixed; transform: rotate(270deg);
  letter-spacing: .15em; text-decoration: none;
}
.side-dots { display: flex; flex-direction: column; gap: 1.2rem; align-items: center; }
.sdot {
  width: 7px; height: 7px;
  border: 1.5px solid var(--ink-30); border-radius: 50%;
  cursor: none; display: block;
  transition: background .3s, border-color .3s, transform .3s;
  position: relative;
}
.sdot::after {
  content: attr(data-label);
  position: absolute; left: 20px; top: 50%; transform: translateY(-50%);
  font-family: var(--sans); font-size: .58rem;
  letter-spacing: .15em; text-transform: uppercase;
  color: var(--ink-60); white-space: nowrap;
  opacity: 0; transition: opacity .3s, left .3s; pointer-events: none;
}
.sdot:hover::after { opacity: 1; left: 24px; }
.sdot.active { background: var(--blue); border-color: var(--blue); transform: scale(1.5); }
.side-year {
  font-family: var(--sans); font-size: .52rem; letter-spacing: .2em;
  color: var(--ink-30); writing-mode: vertical-rl; transform: rotate(180deg);
}

/* ─── TOP BAR ─── */
.top-bar {
  position: fixed; top: 0; left: 68px; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: flex-end;
  padding: 1.6rem 3rem; gap: 2.5rem;
  background: rgba(234,243,250,.55); backdrop-filter: blur(10px);
  transition: background .4s, backdrop-filter .4s, border-color .4s;
}
.top-bar.scrolled {
  background: rgba(234,243,250,.96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--ink-06);
}
.top-link {
  font-family: var(--sans); font-size: .63rem; letter-spacing: .18em;
  text-transform: uppercase; text-decoration: none;
  transition: color .3s;
  color: var(--ink); /* solid dark, always readable */
  position: relative; padding-bottom: 3px;
}
/* Underline indicator for active + hover */
.top-link::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 0; height: 1.5px; background: var(--blue); border-radius: 1px;
  transition: width .35s cubic-bezier(.65,0,.35,1);
}
.top-link:hover { color: var(--blue); }
.top-link:hover::after { width: 100%; }
.top-link.active { color: var(--blue); font-weight: 500; }
.top-link.active::after { width: 100%; }

/* ── Dark-hero pages: links white before scroll ── */
body[data-hero="dark"] .top-bar:not(.scrolled) .top-link { color: rgba(234,243,250,.75); }
body[data-hero="dark"] .top-bar:not(.scrolled) .top-link::after { background: var(--blue-lt); }
body[data-hero="dark"] .top-bar:not(.scrolled) .top-link:hover,
body[data-hero="dark"] .top-bar:not(.scrolled) .top-link.active { color: #fff; }
.top-cta {
  font-family: var(--sans); font-size: .6rem; letter-spacing: .18em;
  text-transform: uppercase; color: #eaf3fa; background: #182c3e;
  padding: .65rem 1.6rem; text-decoration: none; border-radius: 100px;
  position: relative; overflow: hidden; transition: transform .15s;
}
.top-cta::after {
  content: ''; position: absolute; inset: 0; border-radius: 100px;
  background: var(--blue); transform: scaleX(0); transform-origin: left;
  transition: transform .45s cubic-bezier(.65,0,.35,1);
}
.top-cta:hover::after { transform: scaleX(1); }
.top-cta span { position: relative; z-index: 1; }

main { margin-left: 68px; }

/* ─── WAVE DIVIDERS ─── */
.wave-wrap { line-height: 0; overflow: hidden; position: relative; }
.wave-wrap svg { display: block; width: 100%; }

/* ─── PAGE HERO (inner pages) ─── */
.page-hero {
  background: var(--bg-dark);
  padding: 10rem 4.5rem 7rem;
  position: relative; overflow: hidden;
  min-height: 52vh;
  display: flex; align-items: flex-end;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 20% 60%, rgba(42,154,196,.06), transparent 60%);
  pointer-events: none;
}
.page-hero--img {
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
}
.page-hero--img::before {
  background: linear-gradient(to top, rgba(10,20,30,.72) 0%, rgba(10,20,30,.35) 60%, rgba(10,20,30,.15) 100%);
}
.page-hero--img .ph-title { color: #eaf3fa; }
.ph-inner { position: relative; z-index: 2; }
.ph-label {
  font-family: var(--sans); font-size: .56rem;
  letter-spacing: .42em; text-transform: uppercase;
  color: var(--blue-lt); margin-bottom: 1.8rem;
  display: flex; align-items: center; gap: 1rem;
  opacity: 0; animation: fadeUp .8s ease .2s forwards;
}
.ph-label-line { width: 24px; height: 1px; background: var(--blue-lt); opacity: .5; }
.ph-title {
  font-family: var(--serif); font-weight: 300;
  font-size: clamp(3.5rem,7vw,7rem);
  line-height: .9; letter-spacing: -.04em;
  color: var(--ink);
}
.ph-title .word { display: block; overflow: hidden; padding-bottom: 0.18em; margin-bottom: -0.18em; }
.ph-title .wi {
  display: block; transform: translateY(108%);
  animation: wordUp 1.1s cubic-bezier(.16,1,.3,1) forwards;
}
.ph-title .word:nth-child(2) .wi { animation-delay: .12s; font-style: italic; color: var(--blue-lt); }
.ph-desc {
  margin-top: 2rem; font-size: 1.05rem;
  line-height: 1.9; color: var(--ink-60); max-width: 520px;
  opacity: 0; animation: fadeUp .9s ease .5s forwards;
}
@keyframes wordUp { to { transform: translateY(0); } }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── ROLLING BAND ─── */
.rolling-band {
  padding: 1.6rem 0; overflow: hidden;
  border-top: 1px solid var(--ink-06);
  border-bottom: 1px solid var(--ink-06);
  background: var(--bg);
}
.rolling-track {
  display: flex; animation: roll 38s linear infinite; width: max-content;
}
.rolling-item {
  font-family: var(--serif); font-size: 1.3rem;
  font-weight: 300; font-style: italic;
  color: var(--ink-30); white-space: nowrap;
  padding: 0 2rem;
  display: flex; align-items: center; gap: 2rem;
}
.rolling-item .sep {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--blue); opacity: .35; flex-shrink: 0;
}
@keyframes roll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* ─── HERO (home page only) ─── */
.hero {
  min-height: 100vh;
  display: grid; grid-template-columns: 55% 45%;
  position: relative; overflow: hidden; background: var(--bg);
}
.hero-text {
  padding: 10rem 5rem 6rem 4.5rem;
  display: flex; flex-direction: column;
  justify-content: center; position: relative; z-index: 2;
}
.hero-tag {
  font-family: var(--sans); font-size: .58rem;
  letter-spacing: .45em; text-transform: uppercase;
  color: var(--blue); margin-bottom: 2.8rem;
  display: flex; align-items: center; gap: 1rem;
  opacity: 0; animation: fadeUp .8s ease .3s forwards;
}
.hero-tag-line { width: 28px; height: 1px; background: var(--blue); opacity: .5; }
.hero-name {
  font-family: var(--serif); font-weight: 300;
  font-size: clamp(4.5rem,8.5vw,9.5rem);
  line-height: .87; letter-spacing: -.04em;
  color: var(--ink); margin-bottom: 3rem;
}
.hero-name .word { display: block; overflow: hidden; padding-bottom: 0.18em; margin-bottom: -0.18em; }
.hero-name .wi {
  display: block; transform: translateY(108%);
  animation: wordUp 1.1s cubic-bezier(.16,1,.3,1) forwards;
}
.hero-name .word:nth-child(2) .wi {
  animation-delay: .14s; font-style: italic; color: var(--blue);
}
.hero-sub {
  display: flex; gap: 3.5rem; margin-bottom: 2.8rem;
  opacity: 0; animation: fadeUp .9s ease .55s forwards;
}
.hero-sub-col { display: flex; flex-direction: column; gap: .5rem; }
.hero-sub-label {
  font-family: var(--sans); font-size: .52rem;
  letter-spacing: .28em; text-transform: uppercase;
  color: var(--ink-30); margin-bottom: .2rem;
}
.hero-sub-item {
  font-family: var(--serif); font-size: 1rem;
  font-style: italic; color: var(--ink-60); line-height: 1.5;
}
.hero-bio {
  font-size: 1.08rem; line-height: 2;
  color: var(--ink-60); max-width: 480px; margin-bottom: 3rem;
  opacity: 0; animation: fadeUp .9s ease .7s forwards;
}
.hero-cta {
  display: flex; gap: 1.5rem; align-items: center;
  opacity: 0; animation: fadeUp .9s ease .85s forwards;
}
.btn-pill {
  font-family: var(--sans); font-size: .63rem; letter-spacing: .2em;
  text-transform: uppercase; color: var(--ink);
  background: var(--bg-dark); padding: 1rem 2.5rem;
  border-radius: 100px; text-decoration: none;
  display: inline-block; position: relative; overflow: hidden;
  transition: transform .15s;
}
.btn-pill::after {
  content: ''; position: absolute; inset: 0; border-radius: 100px;
  background: var(--blue); transform: scaleX(0); transform-origin: left;
  transition: transform .5s cubic-bezier(.65,0,.35,1);
}
.btn-pill:hover::after { transform: scaleX(1); }
.btn-pill span { position: relative; z-index: 1; }
.btn-ghost {
  font-family: var(--serif); font-size: 1rem; font-style: italic;
  color: var(--ink-60); text-decoration: none;
  border-bottom: 1px solid var(--ink-12); padding-bottom: 2px;
  transition: color .3s, border-color .3s;
}
.btn-ghost:hover { color: var(--blue); border-color: var(--blue); }
.hero-img { position: relative; overflow: hidden; }
.hero-img img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: top center;
  filter: sepia(5%) contrast(1.02);
  transition: transform 8s ease;
}
.hero-img:hover img { transform: scale(1.04); }
.hero-img-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to right, var(--bg) 0%, transparent 16%);
  pointer-events: none;
}
.hero-img-overlay-b {
  position: absolute; left: 0; right: 0; bottom: 0; height: 180px;
  background: linear-gradient(to top, var(--bg), transparent);
  pointer-events: none;
}
.hero-img-reveal {
  position: absolute; inset: 0; background: var(--bg);
  transform-origin: right;
  animation: imgReveal 1.3s cubic-bezier(.65,0,.35,1) .4s forwards;
  z-index: 3;
}
@keyframes imgReveal { to { transform: scaleX(0); } }
.hero-img-label {
  position: absolute; bottom: 3rem; right: 2.5rem;
  font-family: var(--sans); font-size: .52rem;
  letter-spacing: .25em; text-transform: uppercase;
  color: var(--ink-30); z-index: 4; writing-mode: vertical-rl;
  opacity: 0; animation: fadeUp .8s ease 1.6s forwards;
}

/* ─── ABOUT ─── */
.about {
  padding: 9rem 4.5rem;
  display: grid; grid-template-columns: 1fr 1.7fr;
  gap: 5rem; background: var(--bg-alt);
}
.about-sticky { position: sticky; top: 9rem; align-self: start; }
.sec-label {
  font-family: var(--sans); font-size: .53rem;
  letter-spacing: .38em; text-transform: uppercase;
  color: var(--blue); margin-bottom: 1.8rem;
  display: flex; align-items: center; gap: 1rem;
}
.sec-label-line { width: 22px; height: 1px; background: var(--blue); opacity: .4; }
.about-heading {
  font-family: var(--serif); font-size: clamp(2.2rem,3.5vw,3.8rem);
  font-weight: 300; line-height: 1.15; letter-spacing: -.02em; color: var(--ink);
}
.about-heading em { font-style: italic; color: var(--blue); font-weight: 400; }
.about-right { display: flex; flex-direction: column; gap: 4rem; }
.about-block {
  display: grid; grid-template-columns: 72px 1fr;
  gap: 2rem; padding-bottom: 3.5rem;
  border-bottom: 1px solid var(--ink-06);
}
.about-block:last-child { border: none; padding-bottom: 0; }
.about-num {
  font-family: var(--serif); font-size: 3rem;
  font-weight: 300; font-style: italic;
  color: var(--ink-06); line-height: 1; padding-top: .3rem;
}
.about-block-title {
  font-family: var(--sans); font-size: .58rem;
  letter-spacing: .25em; text-transform: uppercase;
  color: var(--blue); margin-bottom: .9rem;
}
.about-block-text {
  font-family: var(--serif); font-size: 1.08rem; line-height: 2; color: var(--ink-60);
}
.stats-row {
  display: flex; gap: 0; border-top: 1px solid var(--ink-06); padding-top: 3rem;
}
.stat { flex: 1; padding-right: 2rem; border-right: 1px solid var(--ink-06); }
.stat:last-child { border: none; padding-right: 0; padding-left: 2rem; }
.stat:not(:first-child):not(:last-child) { padding-left: 2rem; }
.stat-num {
  font-family: var(--serif); font-size: 2.8rem;
  font-weight: 400; color: var(--blue); line-height: 1; margin-bottom: .4rem;
}
.stat-label {
  font-family: var(--sans); font-size: .58rem;
  letter-spacing: .18em; text-transform: uppercase; color: var(--ink-30);
}

/* ─── RESEARCH (BENTO) ─── */
.research {
  padding: 8rem 4.5rem;
  background: var(--bg-dark); color: var(--ink);
  position: relative; overflow: hidden;
}
.research-header {
  display: flex; justify-content: space-between;
  align-items: flex-end; margin-bottom: 4.5rem;
}
.research-title {
  font-family: var(--serif); font-size: clamp(2.5rem,4vw,4.5rem);
  font-weight: 300; line-height: 1.08; letter-spacing: -.02em;
}
.research-title em { font-style: italic; color: var(--blue-lt); }
.research-count {
  font-family: var(--sans); font-size: .58rem;
  letter-spacing: .2em; text-transform: uppercase; color: var(--ink-30);
}
.bento {
  display: grid; grid-template-columns: repeat(3,1fr);
  grid-template-rows: auto auto; gap: 1.5rem; align-items: stretch;
}
.bc {
  padding: 2.8rem;
  border: 1px solid var(--ink-12); border-radius: 14px;
  position: relative; overflow: hidden;
  transition: border-color .4s, transform .4s;
  background: rgba(15,30,44,.03);
  display: flex; flex-direction: column;
}
.bc:hover { border-color: rgba(42,154,196,.28); transform: translateY(-5px); }
.bc::after {
  content: '';
  position: absolute; width: 180px; height: 180px; border-radius: 50%;
  background: radial-gradient(circle, rgba(42,154,196,.07), transparent 70%);
  bottom: -70px; right: -70px; pointer-events: none;
  opacity: 0; transition: opacity .5s;
}
.bc:hover::after { opacity: 1; }
.bc-wide { grid-column: span 2; }
.bc-tall { grid-column: 3; grid-row: 1 / span 2; justify-content: space-between; }
.bento-icon {
  width: 44px; height: 44px;
  border: 1px solid var(--ink-12); border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.8rem;
  font-family: var(--serif); font-size: 1.1rem; font-style: italic;
  color: var(--blue-lt); flex-shrink: 0;
}
.bento-heading {
  font-family: var(--serif); font-size: 1.5rem;
  font-weight: 400; line-height: 1.3; margin-bottom: 1.1rem;
}
.bento-heading em { font-style: italic; color: var(--blue-lt); }
.bento-text {
  font-family: var(--serif); font-size: .95rem;
  line-height: 1.9; color: var(--ink-60); flex-grow: 1;
}

/* ─── QUOTE PARALLAX ─── */
.quote-par {
  height: 68vh; position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.quote-par-bg {
  position: absolute; top: -20%; left: 0;
  width: 100%; height: 140%;
  object-fit: cover;
  filter: sepia(12%) contrast(.92) brightness(.5) saturate(.6);
}
.quote-par-overlay {
  position: absolute; inset: 0; background: rgba(24,44,62,.62);
}
.quote-par-content {
  position: relative; z-index: 2;
  text-align: center; padding: 0 4rem; max-width: 820px;
}
.quote-par-content blockquote {
  font-family: var(--serif); font-size: clamp(1.6rem,3vw,2.7rem);
  font-weight: 300; font-style: italic; line-height: 1.6; color: var(--light);
}
.quote-par-content cite {
  display: block; margin-top: 2rem;
  font-family: var(--sans); font-style: normal;
  font-size: .58rem; letter-spacing: .38em;
  text-transform: uppercase; color: var(--blue-lt);
}
.quote-photo-credit {
  position: absolute; bottom: 1rem; right: 1.4rem;
  font-family: var(--sans); font-size: .5rem;
  letter-spacing: .12em; text-transform: uppercase;
  color: rgba(234,243,250,.35);
  pointer-events: none; z-index: 3;
}

/* ─── PUBLICATIONS ─── */
.pubs { padding: 9rem 4.5rem 8rem; background: var(--bg); }
.pubs-header {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 4rem; margin-bottom: 5rem; align-items: end;
}
.pubs-title {
  font-family: var(--serif); font-size: clamp(2.5rem,4vw,4.5rem);
  font-weight: 300; line-height: 1.08;
}
.pubs-title em { font-style: italic; color: var(--blue); }
.pubs-intro { font-size: 1.05rem; line-height: 2; color: var(--ink-60); max-width: 400px; }
.pub-list { display: flex; flex-direction: column; }
.pub-row {
  display: grid; grid-template-columns: 100px 1fr 110px;
  gap: 3rem; align-items: center;
  padding: 2.8rem 0; border-top: 1px solid var(--ink-06);
  position: relative; transition: padding-left .4s;
}
.pub-row::before {
  content: '';
  position: absolute; left: 0; top: 50%;
  width: 0; height: 1px; background: var(--blue);
  transition: width .5s cubic-bezier(.65,0,.35,1);
  transform: translateY(-50%);
}
.pub-row:hover { padding-left: 1.2rem; }
.pub-row:hover::before { width: 18px; }
.pub-year {
  font-family: var(--serif); font-size: 2.8rem;
  font-weight: 300; font-style: italic; color: var(--ink-06);
  line-height: 1; transition: color .4s;
}
.pub-row:hover .pub-year { color: var(--blue); opacity: .3; }
.pub-source {
  font-family: var(--sans); font-size: .52rem;
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--blue); margin-bottom: .5rem;
}
.pub-title {
  font-family: var(--serif); font-size: 1.22rem;
  font-weight: 500; line-height: 1.35; margin-bottom: .7rem; color: var(--ink);
}
.pub-title em { font-style: italic; color: var(--blue); }
.pub-excerpt {
  font-size: .9rem; font-style: italic; line-height: 1.8; color: var(--ink-60);
  padding-left: 1.1rem; border-left: 2px solid var(--blue-pale);
}
.pub-link {
  font-family: var(--sans); font-size: .58rem;
  letter-spacing: .15em; text-transform: uppercase;
  color: var(--ink-30); text-decoration: none;
  text-align: right; transition: color .3s; display: block;
}
.pub-link:hover { color: var(--blue); }

/* ─── APPEARANCES ─── */
.appearances {
  padding: 8rem 0 8rem 4.5rem;
  overflow: hidden; position: relative; background: var(--bg-alt);
}
.appear-header {
  display: flex; justify-content: space-between;
  align-items: flex-end; padding-right: 4.5rem; margin-bottom: 4rem;
}
.ac-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding: 0 4.5rem 4rem;
}
.appear-title {
  font-family: var(--serif); font-size: clamp(2.5rem,4vw,4.5rem);
  font-weight: 300; line-height: 1.08;
}
.appear-title em { font-style: italic; color: var(--blue); }
.appear-nav { display: flex; gap: .8rem; align-items: center; }
.appear-btn {
  width: 44px; height: 44px;
  border: 1.5px solid var(--ink-12); border-radius: 50%;
  background: transparent; color: var(--ink-60);
  font-size: 1.1rem; cursor: none;
  display: flex; align-items: center; justify-content: center;
  transition: border-color .3s, background .3s, color .3s;
}
.appear-btn:hover { border-color: var(--blue); background: var(--blue); color: white; }
.appear-scroll-hint {
  font-family: var(--sans); font-size: .58rem;
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--ink-30); display: flex; align-items: center; gap: .8rem;
}
.scroll-arrow { display: inline-block; animation: arrowBounce 1.5s ease infinite; }
@keyframes arrowBounce { 0%,100% { transform: translateX(0); } 50% { transform: translateX(8px); } }
.h-track {
  display: flex; gap: 2rem;
  overflow-x: auto; scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 2rem; padding-right: 4.5rem;
  scrollbar-width: none; cursor: grab;
}
.h-track::-webkit-scrollbar { display: none; }
.h-track.dragging { cursor: grabbing; scroll-snap-type: none; }
.ac {
  border: 1px solid var(--ink-12); border-radius: 18px;
  padding: 2.8rem;
  position: relative; overflow: hidden;
  transition: border-color .4s, box-shadow .4s, transform .3s;
  background: var(--bg-card);
  display: flex; flex-direction: column;
}
.ac:hover {
  border-color: var(--blue);
  box-shadow: 0 18px 55px rgba(26,106,142,.08);
  transform: translateY(-4px);
}
.ac-type {
  font-family: var(--sans); font-size: .52rem;
  letter-spacing: .3em; text-transform: uppercase;
  color: var(--blue); margin-bottom: 1.3rem;
  display: inline-block; padding: .32rem .85rem;
  border: 1px solid var(--blue-pale); border-radius: 100px;
  align-self: flex-start;
}
.ac-title {
  font-family: var(--serif); font-size: 1.35rem;
  font-weight: 500; line-height: 1.3; margin-bottom: 1rem; color: var(--ink);
}
.ac-desc {
  font-size: .9rem; line-height: 1.88; color: var(--ink-60);
  margin-bottom: 2rem; flex-grow: 1;
}
.ac-links { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: auto; }
.ac-link {
  font-family: var(--sans); font-size: .58rem;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--ink); text-decoration: none;
  background: var(--bg-alt); padding: .62rem 1.5rem;
  border-radius: 100px;
  display: inline-flex; align-items: center; gap: .55rem;
  transition: background .3s, color .3s;
}
.ac-link:hover { background: var(--blue); color: white; }
.appear-progress { padding: 1.5rem 4.5rem 0; display: flex; align-items: center; }
.appear-prog-track {
  flex: 1; height: 2px; background: var(--ink-06);
  border-radius: 2px; overflow: hidden;
}
.appear-prog-fill {
  height: 100%; background: var(--blue);
  border-radius: 2px; width: 0%; transition: width .2s ease;
}

/* ─── TALKS ─── */
.talks { padding: 8rem 4.5rem; background: var(--bg-talks); }
.talks-title {
  font-family: var(--serif); font-size: clamp(2rem,3vw,3.2rem);
  font-weight: 300; margin-bottom: 4.5rem;
}
.talks-title em { font-style: italic; color: var(--blue); }
.talks-masonry { columns: 3; column-gap: 2rem; }
.talk-chip {
  break-inside: avoid; margin-bottom: 1.8rem; padding: 1.8rem 2rem;
  background: var(--bg-card); border-radius: 14px;
  border: 1px solid var(--ink-06);
  transition: border-color .3s, box-shadow .3s;
}
.talk-chip:hover {
  border-color: var(--blue);
  box-shadow: 0 8px 28px rgba(26,106,142,.06);
}
.talk-date {
  font-family: var(--sans); font-size: .52rem;
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--blue); margin-bottom: .7rem;
}
.talk-name {
  font-family: var(--serif); font-size: 1.08rem;
  font-weight: 500; line-height: 1.35; color: var(--ink); margin-bottom: .4rem;
}
.talk-venue { font-size: .86rem; font-style: italic; color: var(--ink-60); }

/* ─── CONTACT ─── */
.contact { padding: 9rem 4.5rem; background: var(--bg); }
.contact-inner { max-width: 880px; margin: 0 auto; text-align: center; }
.contact-heading {
  font-family: var(--serif); font-size: clamp(3rem,6vw,6.5rem);
  font-weight: 300; line-height: .98; letter-spacing: -.03em; margin-bottom: 1.8rem;
}
.contact-heading em { font-style: italic; color: var(--blue); }
.contact-sub {
  font-size: 1.08rem; line-height: 1.95; color: var(--ink-60);
  max-width: 480px; margin: 0 auto 3.5rem;
}
.contact-form {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 2.5rem; text-align: left; max-width: 680px; margin: 0 auto;
}
.contact-form .full { grid-column: span 2; }
.fv { position: relative; }
.fv label {
  font-family: var(--sans); font-size: .52rem;
  letter-spacing: .25em; text-transform: uppercase;
  color: var(--ink-30); display: block; margin-bottom: .4rem;
}
.fv input, .fv textarea {
  width: 100%; background: transparent; border: none;
  border-bottom: 1px solid var(--ink-12);
  font-family: var(--serif); font-size: 1.05rem; color: var(--ink);
  padding: .65rem 0; outline: none; transition: border-color .4s;
}
.fv input:focus, .fv textarea:focus { border-bottom-color: var(--blue); }
.fv input::placeholder, .fv textarea::placeholder { color: var(--ink-30); font-style: italic; }
.fv textarea { resize: none; height: 95px; line-height: 1.7; }
.fv .uline {
  position: absolute; bottom: 0; left: 0;
  width: 0; height: 2px; background: var(--blue);
  transition: width .5s cubic-bezier(.65,0,.35,1);
}
.fv input:focus ~ .uline, .fv textarea:focus ~ .uline { width: 100%; }
.submit-row {
  grid-column: span 2;
  display: flex; justify-content: center; align-items: center; gap: 2rem; margin-top: .5rem;
}
.btn-submit {
  font-family: var(--sans); font-size: .63rem; letter-spacing: .2em;
  text-transform: uppercase; color: #eaf3fa; background: #182c3e;
  border: none; padding: 1.1rem 3rem; border-radius: 100px;
  cursor: none; transition: transform .15s;
  position: relative; overflow: hidden;
}
.btn-submit::after {
  content: ''; position: absolute; inset: 0; border-radius: 100px;
  background: var(--blue); transform: scaleX(0); transform-origin: left;
  transition: transform .5s cubic-bezier(.65,0,.35,1);
}
.btn-submit:hover::after { transform: scaleX(1); }
.btn-submit span { position: relative; z-index: 1; }
.submit-note { font-size: .82rem; font-style: italic; color: var(--ink-30); }

/* ─── FOOTER ─── */
.footer {
  padding: 2.8rem 4.5rem;
  background: #182c3e;
  display: flex; justify-content: space-between; align-items: center;
}
.footer-copy {
  font-family: var(--sans); font-size: .6rem;
  letter-spacing: .12em; color: var(--ink-30);
}
.footer-links { display: flex; gap: 2.5rem; }
.footer-links a {
  font-family: var(--sans); font-size: .58rem;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-30); text-decoration: none; transition: color .3s;
}
.footer-links a:hover { color: var(--blue-lt); }
.footer-top {
  font-family: var(--sans); font-size: .58rem;
  letter-spacing: .15em; text-transform: uppercase;
  color: var(--blue-lt); text-decoration: none;
  display: flex; align-items: center; gap: .4rem; transition: opacity .3s;
}
.footer-top:hover { opacity: .65; }

/* ─── SCROLL REVEALS ─── */
.rv  { opacity: 0; transform: translateY(28px); transition: opacity .8s cubic-bezier(.16,1,.3,1), transform .8s cubic-bezier(.16,1,.3,1); }
.rvl { opacity: 0; transform: translateX(-28px); transition: opacity .8s cubic-bezier(.16,1,.3,1), transform .8s cubic-bezier(.16,1,.3,1); }
.rvr { opacity: 0; transform: translateX(28px); transition: opacity .8s cubic-bezier(.16,1,.3,1), transform .8s cubic-bezier(.16,1,.3,1); }
.rvs { opacity: 0; transform: scale(.93); transition: opacity .8s cubic-bezier(.16,1,.3,1), transform .8s cubic-bezier(.16,1,.3,1); }
.rv.vis, .rvl.vis, .rvr.vis, .rvs.vis { opacity: 1; transform: none; }

/* ─── MOBILE NAV LOGO ─── */
.top-logo {
  display: none;
  font-family: var(--serif); font-weight: 600; font-size: .95rem;
  color: var(--ink); letter-spacing: .15em; text-decoration: none;
  margin-right: auto;
}
body[data-hero="dark"] .top-bar:not(.scrolled) .top-logo { color: rgba(234,243,250,.85); }
.top-bar.nav-open .top-logo { display: none; }

/* ─── HAMBURGER BUTTON ─── */
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  background: transparent; border: none;
  cursor: pointer; padding: 9px;
  flex-direction: column; justify-content: center; gap: 5.5px;
  flex-shrink: 0; position: relative; z-index: 1;
}
.nav-toggle span {
  display: block; width: 100%; height: 1.5px;
  background: var(--ink); border-radius: 2px;
  transition: transform .4s cubic-bezier(.16,1,.3,1), opacity .3s, width .3s;
  transform-origin: center;
}
body[data-hero="dark"] .top-bar:not(.scrolled) .nav-toggle span { background: rgba(234,243,250,.82); }
.top-bar.nav-open .nav-toggle span { background: rgba(234,243,250,.82); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; width: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── MOBILE NAV OVERLAY ─── */
.mobile-nav {
  position: fixed; inset: 0; z-index: 95;
  background: #182c3e;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 2.8rem;
  opacity: 0; pointer-events: none;
  transition: opacity .42s cubic-bezier(.16,1,.3,1);
}
.mobile-nav.open { opacity: 1; pointer-events: all; }
.mobile-nav .top-link {
  font-family: var(--serif) !important;
  font-size: clamp(1.9rem, 7vw, 2.6rem) !important;
  font-weight: 300 !important; letter-spacing: -.02em !important;
  text-transform: none !important; line-height: 1 !important;
  color: rgba(15,30,44,.52) !important;
  text-decoration: none; padding-bottom: 0 !important;
  opacity: 0; transform: translateY(22px);
  transition: opacity .55s cubic-bezier(.16,1,.3,1),
              transform .55s cubic-bezier(.16,1,.3,1),
              color .3s;
}
.mobile-nav.open .top-link { opacity: 1; transform: none; }
.mobile-nav.open .top-link:nth-child(1) { transition-delay: .04s; }
.mobile-nav.open .top-link:nth-child(2) { transition-delay: .09s; }
.mobile-nav.open .top-link:nth-child(3) { transition-delay: .14s; }
.mobile-nav.open .top-link:nth-child(4) { transition-delay: .19s; }
.mobile-nav.open .top-link:nth-child(5) { transition-delay: .24s; }
.mobile-nav.open .top-link.active { color: var(--ink) !important; }
.mobile-nav .top-link:hover { color: var(--blue-lt) !important; }
.mobile-nav .top-link::after { display: none !important; }
.mobile-nav .top-cta {
  font-size: .65rem !important;
  opacity: 0; transform: translateY(22px);
  transition: opacity .55s .29s cubic-bezier(.16,1,.3,1),
              transform .55s .29s cubic-bezier(.16,1,.3,1);
}
.mobile-nav.open .top-cta { opacity: 1; transform: none; }

/* ─── RESPONSIVE ─── */

/* Laptop (≤1280px): tighten top bar and section padding */
@media (max-width: 1280px) {
  .top-bar { gap: 2rem; padding: 1.4rem 2.5rem; }
  .hero-text { padding: 9rem 4rem 5rem 4rem; }
  .about, .pubs { padding: 8rem 3.5rem; }
  .research { padding: 8rem 3.5rem; }
  .appearances { padding: 7rem 0 7rem 3.5rem; }
  .appear-header { padding-right: 3.5rem; }
  .appear-progress { padding-right: 3.5rem; }
  .talks { padding: 7rem 3.5rem; }
  .contact { padding: 8rem 3.5rem; }
  .footer { padding: 2.5rem 3.5rem; }
  .page-hero { padding: 9rem 3.5rem 6rem; }
}

/* Wide tablet / small laptop (≤1100px): side-nav hides, fix top-bar offset */
@media (max-width: 1100px) {
  .side-nav { display: none; }
  main { margin-left: 0; }
  .top-bar { left: 0; gap: 1.8rem; }
  .top-logo { display: block; }

  .hero { grid-template-columns: 1fr; }
  .hero-img { display: none; }
  .hero-text { padding: 8rem 3rem 5rem; }

  .about { grid-template-columns: 1fr; gap: 3rem; padding: 7rem 3rem; }
  .about-sticky { position: static; }

  /* Bento: keep 2 columns on tablet */
  .bento { grid-template-columns: 1fr 1fr; gap: 1.4rem; }
  .bc-wide { grid-column: span 2; }
  .bc-tall  { grid-column: auto; grid-row: auto; }

  .pubs { padding: 8rem 3rem; }
  .pubs-header { grid-template-columns: 1fr; gap: 1.5rem; }
  .pub-row { grid-template-columns: 80px 1fr 90px; gap: 1.5rem; }
  .pub-year { font-size: 2rem; }

  .appearances { padding: 7rem 0 7rem 3rem; }
  .appear-header { padding-right: 3rem; }
  .appear-progress { padding-right: 3rem; }

  .talks { padding: 7rem 3rem; }
  .talks-masonry { columns: 2; }

  .contact { padding: 8rem 3rem; }
  .page-hero { padding: 8rem 3rem 5.5rem; }
  .footer { padding: 2.5rem 3rem; }
}

/* Tablet (≤900px) */
@media (max-width: 900px) {
  .ac-grid { grid-template-columns: repeat(2, 1fr); padding: 0 2.5rem 3rem; }
  .top-bar { gap: 1.4rem; padding: 1.2rem 2rem; }
  .top-link { font-size: .58rem; letter-spacing: .14em; }

  .hero-text { padding: 7rem 2.5rem 4rem; }

  .about, .pubs { padding: 6rem 2.5rem; }
  .research { padding: 6rem 2.5rem; }
  .appearances { padding: 6rem 0 6rem 2.5rem; }
  .appear-header { padding-right: 2.5rem; }
  .appear-progress { padding: 1.2rem 2.5rem 0; }
  .talks { padding: 6rem 2.5rem; }
  .contact { padding: 6rem 2.5rem; }
  .footer { padding: 2.2rem 2.5rem; }
  .page-hero { padding: 7.5rem 2.5rem 5rem; }

  .pubs-header { margin-bottom: 3rem; }
  .pub-row { grid-template-columns: 65px 1fr; gap: 1rem; }
  .pub-link { display: none; }

  .bento { gap: 1.1rem; }
}

/* Mobile (≤768px): hamburger menu, single-column layouts */
@media (max-width: 768px) {
  .ac-grid { grid-template-columns: 1fr; padding: 0 1.5rem 2.5rem; }
  .top-bar { left: 0; padding: 1.1rem 1.4rem; justify-content: space-between; gap: 0; }
  .top-bar .top-link,
  .top-bar .top-cta { display: none; }
  .top-logo { display: block; }
  .nav-toggle { display: flex; }

  body { cursor: default; }
  #c-ring, #c-dot { display: none; }
  .btn-pill, .btn-submit, .ac-link, .appear-btn, .top-cta { cursor: pointer; }

  .hero-text { padding: 7rem 1.5rem 4rem; }
  .hero-sub { flex-direction: column; gap: 1.5rem; }

  .about { padding: 5rem 1.5rem; }
  .research { padding: 5rem 1.5rem; }
  .bento { grid-template-columns: 1fr; gap: 1rem; }
  .bc-wide { grid-column: auto; }

  .pubs { padding: 5rem 1.5rem; }
  .pub-row { grid-template-columns: 1fr; gap: .5rem; padding: 2rem 0; }
  .pub-year { font-size: 1.8rem; }
  .pub-link { display: none; }

  .appearances { padding: 5rem 0 5rem 1.5rem; }
  .appear-header { padding-right: 1.5rem; flex-wrap: wrap; gap: 1rem; }
  .appear-progress { padding: 1rem 1.5rem 0; }

  .talks { padding: 5rem 1.5rem; }
  .talks-masonry { columns: 1; }

  .contact { padding: 5rem 1.5rem; }
  .contact-form { grid-template-columns: 1fr; gap: 2rem; }
  .contact-form .full, .submit-row { grid-column: auto; }

  .footer { flex-direction: column; gap: 1.5rem; text-align: center; padding: 2rem 1.5rem; }
  .footer-links { flex-wrap: wrap; justify-content: center; gap: 1.5rem; }

  .stats-row { flex-direction: column; gap: 1.5rem; }
  .stat { border: none !important; padding: 0 !important; }

  .page-hero { padding: 7rem 1.5rem 4rem; min-height: 42vh; }
  .quote-par { height: 52vh; }
  .quote-par-content { padding: 0 1.5rem; }
  .rolling-item { font-size: 1.1rem; padding: 0 1.2rem; }
}

/* Small mobile (≤480px) */
@media (max-width: 480px) {
  .top-bar { padding: 1rem 1.1rem; }
  .hero-text { padding: 6rem 1.2rem 3.5rem; }
  .page-hero { padding: 6.5rem 1.2rem 3.5rem; min-height: 38vh; }
  .pub-row { padding: 1.6rem 0; }
  .mobile-nav { gap: 2rem; }
  .mobile-nav .top-link { font-size: clamp(1.7rem, 7vw, 2rem) !important; }
  .footer-links { gap: 1.2rem; }
}