/* =========================================================
   DR.VIKAS KUMAR — RESEARCH PORTFOLIO
   Design language: "Field Register" — an academic dossier
   built around the certification-seal motif of Geographical
   Indication (GI) tags, rendered in indigo / moss / turmeric
   on a sage-linen field.
   ========================================================= */

:root{
  /* ---- color tokens ---- */
  --paper:        #EEF0E3;   /* base background — pale sage linen   */
  --paper-alt:    #E3E7D3;   /* alternating section band            */
  --card:         #F8F9EF;   /* card surface, lighter than paper    */
  --ink:          #1B2419;   /* primary text — deep botanical black */
  --ink-soft:     #4B5645;   /* secondary text                      */
  --ink-faint:    #7C8871;   /* tertiary / meta text                */
  --moss:         #3E5B37;   /* primary accent — innovation green   */
  --moss-deep:    #2C4227;   /* primary accent, hover/dark          */
  --indigo:       #2B3C63;   /* secondary accent — heritage indigo  */
  --indigo-soft:  #E4E8F0;   /* indigo tint for chips/backgrounds   */
  --turmeric:     #B9821E;   /* tertiary accent — seal / stamp gold */
  --turmeric-soft:#F3E6C8;
  --line:         #C7CBAF;   /* hairline rule                       */
  --line-soft:    #DADEC8;
  --night:        #141C13;   /* dark footer background              */
  --night-ink:    #D8DEC9;   /* text on dark background             */

  /* ---- type tokens ---- */
  --font-display: "Fraunces", "Iowan Old Style", serif;
  --font-body:    "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --font-mono:    "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;

  /* ---- layout tokens ---- */
  --maxw: 1180px;
  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-lg: 28px;

  --ease: cubic-bezier(.22,.68,.16,1);
}

/* ---------------------------------------------------------
   RESET
   --------------------------------------------------------- */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, figure, blockquote, ul, ol, dl{ margin: 0; }
ul, ol{ padding: 0; list-style: none; }
img, svg{ display:block; max-width: 100%; }
a{ color: inherit; text-decoration: none; }
button{ font: inherit; background: none; border: none; cursor: pointer; color: inherit; }

body{
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.wrap{
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

section{ position: relative; }

h1, h2, h3, h4{
  font-family: var(--font-display);
  color: var(--ink);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.01em;
}

.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--moss-deep);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
}
.eyebrow::before{
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--turmeric);
  display: inline-block;
}

.section-head{
  max-width: 640px;
  margin-bottom: clamp(2rem, 5vw, 3.25rem);
}
.section-head h2{
  font-size: clamp(1.9rem, 3.2vw, 2.6rem);
  margin-top: 0.6rem;
}
.section-head p{
  color: var(--ink-soft);
  margin-top: 0.9rem;
  font-size: 1.02rem;
  max-width: 52ch;
}
.section-index{
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
}

/* focus visibility */
a:focus-visible, button:focus-visible, [tabindex]:focus-visible{
  outline: 2px solid var(--indigo);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------------------------------------------------------
   REVEAL-ON-SCROLL
   --------------------------------------------------------- */
.reveal{
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-visible{ opacity: 1; transform: translateY(0); }
.reveal-stagger > *{ transition-delay: calc(var(--i, 0) * 90ms); }

@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
  .reveal{ opacity: 1; transform: none; }
}

/* ---------------------------------------------------------
   SEAL BADGE — the recurring GI-certification signature
   --------------------------------------------------------- */
.seal{
  --seal-c: var(--moss);
  width: 64px; height: 64px;
  border-radius: 50%;
  border: 1.5px dashed var(--seal-c);
  display: grid;
  place-items: center;
  position: relative;
  flex-shrink: 0;
  color: var(--seal-c);
}
.seal::before{
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  border: 1px solid var(--seal-c);
  opacity: 0.55;
}
.seal span{
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-align: center;
  line-height: 1.15;
}
.seal--gold{ --seal-c: var(--turmeric); }
.seal--indigo{ --seal-c: var(--indigo); }
.seal--sm{ width: 40px; height: 40px; }
.seal--sm::before{ inset: 4px; }
.seal--sm span{ font-size: 0.5rem; }

/* ---------------------------------------------------------
   NAV
   --------------------------------------------------------- */
.nav{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.1rem 0;
  transition: background .35s var(--ease), box-shadow .35s var(--ease), padding .35s var(--ease);
}
.nav.is-scrolled{
  background: rgba(238,240,227,0.86);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--line);
  padding: 0.7rem 0;
}
.nav .wrap{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.brand{
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.03em;
}
.brand-mark{
  width: 30px; height: 30px;
  border-radius: 50%;
  border: 1.5px dashed var(--moss);
  display: grid; place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.72rem;
  color: var(--moss-deep);
}
.brand-name strong{ color: var(--ink); font-weight: 600; }
.brand-name{ color: var(--ink-faint); }

.nav-links{
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 1.9rem);
  font-size: 0.88rem;
}
.nav-links a{
  position: relative;
  padding: 0.2rem 0;
  color: var(--ink-soft);
  transition: color .2s;
}
.nav-links a::after{
  content:"";
  position: absolute; left:0; right:100%; bottom:-3px;
  height: 1.5px; background: var(--moss);
  transition: right .28s var(--ease);
}
.nav-links a:hover, .nav-links a.is-active{ color: var(--ink); }
.nav-links a:hover::after, .nav-links a.is-active::after{ right: 0; }

.nav-cta{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  border: 1px solid var(--ink);
  padding: 0.5rem 0.95rem;
  border-radius: 999px;
  transition: background .2s, color .2s;
  white-space: nowrap;
}
.nav-cta:hover{ background: var(--ink); color: var(--paper); }

.nav-toggle{
  display: none;
  width: 34px; height: 34px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span{ display:block; height: 1.5px; background: var(--ink); }

.nav-drawer{
  position: absolute;
  top: 100%; left: 0; right: 0;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  padding: 0.5rem var(--gutter) 1.2rem;
  gap: 0.2rem;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height .35s var(--ease), opacity .3s var(--ease);
}
.nav-drawer.is-open{ max-height: 340px; opacity: 1; }
.nav-drawer a{
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 0.95rem;
  color: var(--ink-soft);
}
.nav-drawer a:last-child{ border-bottom: none; }
.nav-toggle.is-active span:nth-child(1){ transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2){ opacity: 0; }
.nav-toggle.is-active span:nth-child(3){ transform: translateY(-6.5px) rotate(-45deg); }
.nav-toggle span{ transition: transform .25s var(--ease), opacity .2s; }

/* ---------------------------------------------------------
   HERO
   --------------------------------------------------------- */
.hero{
  padding: clamp(7.5rem, 14vw, 10.5rem) 0 clamp(4rem, 8vw, 6rem);
  background:
    radial-gradient(circle at 88% 8%, rgba(185,130,30,0.10), transparent 55%),
    radial-gradient(circle at 6% 92%, rgba(43,60,99,0.08), transparent 50%),
    var(--paper);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.hero .wrap{
  display: grid;
  grid-template-columns: 1.5fr 0.9fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.hero-kicker{ margin-bottom: 1.4rem; }
.hero h1{
  font-size: clamp(3rem, 7vw, 5.2rem);
  font-weight: 600;
}
.hero h1 em{
  font-style: italic;
  font-weight: 400;
  color: var(--moss-deep);
}
.hero-role{
  margin-top: 0.9rem;
  font-size: clamp(1.05rem, 1.6vw, 1.28rem);
  color: var(--ink-soft);
  max-width: 46ch;
}
.hero-role b{ color: var(--ink); font-weight: 600; }
.hero-lede{
  margin-top: 1.6rem;
  max-width: 46ch;
  color: var(--ink-soft);
  font-size: 1rem;
}
.hero-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2.2rem;
}
.btn{
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  padding: 0.78rem 1.4rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  transition: transform .25s var(--ease), background .25s, color .25s, border-color .25s;
}
.btn-primary{ background: var(--moss-deep); color: var(--paper); }
.btn-primary:hover{ background: var(--ink); transform: translateY(-2px); }
.btn-ghost{ border: 1px solid var(--ink); color: var(--ink); }
.btn-ghost:hover{ background: var(--ink); color: var(--paper); transform: translateY(-2px); }

/* hero seal column */
.hero-seal-col{ display:flex; flex-direction:column; align-items:flex-end; gap: 1.8rem; }

.hero-portrait{
  position: relative;
  width: min(230px, 100%);
}
.hero-portrait-frame{
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  padding: 9px;
  border: 1.5px dashed var(--moss);
  background: var(--card);
  box-shadow: 0 24px 44px -26px rgba(27,36,25,0.4);
}
.hero-portrait-frame img{
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 22%;
  filter: grayscale(1) contrast(1.08) brightness(1.02);
}
.hero-portrait-frame{ position: relative; }
.hero-portrait-frame img{ transition: filter .5s var(--ease); }
.hero-portrait:hover .hero-portrait-frame img{ filter: grayscale(0.65) contrast(1.08) brightness(1.02); }
.hero-seal{
  position: absolute;
  right: -18px;
  bottom: -14px;
  width: 96px;
  z-index: 2;
  filter: drop-shadow(0 8px 14px rgba(27,36,25,0.25));
  animation: stamp-press .85s var(--ease) .5s both;
  transform: rotate(-3deg);
  transition: transform .45s var(--ease), filter .45s var(--ease);
}
.hero-portrait:hover .hero-seal{
  transform: rotate(0deg) scale(1.06);
  filter: drop-shadow(0 10px 18px rgba(27,36,25,0.3));
}
@keyframes stamp-press{
  0%{ opacity:0; transform: scale(1.5) rotate(-8deg); }
  60%{ opacity:1; transform: scale(0.97) rotate(2deg); }
  100%{ opacity:1; transform: scale(1) rotate(-3deg); }
}
@media (prefers-reduced-motion: reduce){
  .hero-seal{ animation: none; transform: rotate(-3deg); }
}
.hero-meta-card{
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.3rem;
  width: 100%;
  font-size: 0.86rem;
  color: var(--ink-soft);
}
.hero-meta-card div + div{ margin-top: 0.55rem; padding-top: 0.55rem; border-top: 1px solid var(--line-soft); }
.hero-meta-card strong{ color: var(--ink); display:block; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 0.2rem; color: var(--ink-faint); }

.stat-strip{
  margin-top: clamp(3rem, 6vw, 4.5rem);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.stat{
  padding: 1.1rem 1.4rem;
  border-left: 1px solid var(--line);
}
.stat:first-child{ border-left: none; padding-left: 0; }
.stat b{
  display:block;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  color: var(--moss-deep);
}
.stat span{
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ---------------------------------------------------------
   ABOUT
   --------------------------------------------------------- */
.about{ padding: clamp(4.5rem, 9vw, 7rem) 0; }
.about .wrap{
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2.5rem, 6vw, 5rem);
}
.about-credentials{
  border-right: 1px solid var(--line);
  padding-right: clamp(1.5rem, 3vw, 2.5rem);
}
.timeline{ margin-top: 1.6rem; }
.timeline li{
  position: relative;
  padding-left: 1.6rem;
  padding-bottom: 1.5rem;
  border-left: 1px solid var(--line);
}
.timeline li:last-child{ border-color: transparent; padding-bottom: 0; }
.timeline li::before{
  content:"";
  position: absolute; left: -4.5px; top: 2px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--paper);
  border: 1.5px solid var(--moss);
}
.timeline .deg{ font-weight: 600; color: var(--ink); font-size: 0.98rem; }
.timeline .inst{ color: var(--ink-soft); font-size: 0.9rem; margin-top: 0.15rem; }

.about-body p{ color: var(--ink-soft); margin-bottom: 1.15rem; max-width: 62ch; }
.about-body p:first-of-type{ font-size: 1.12rem; color: var(--ink); }
.chip-row{ display: flex; flex-wrap: wrap; gap: 0.55rem; margin-top: 1.6rem; }
.chip{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  background: var(--indigo-soft);
  color: var(--indigo);
  border: 1px solid rgba(43,60,99,0.18);
}

/* ---------------------------------------------------------
   RESEARCH PILLARS
   --------------------------------------------------------- */
.research{ padding: clamp(4.5rem, 9vw, 7rem) 0; background: var(--paper-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pillars{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.pillar{
  background: var(--card);
  padding: 2rem 1.8rem;
  position: relative;
  z-index: 0;
  transition: background .3s var(--ease), transform .35s var(--ease), box-shadow .35s var(--ease);
}
.pillar:hover{
  background: #FBFCF4;
  transform: translateY(-4px);
  box-shadow: 0 20px 36px -24px rgba(27,36,25,0.4);
  z-index: 1;
}
.pillar-num{
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--turmeric); letter-spacing: .05em;
  display: inline-block; transition: transform .35s var(--ease);
}
.pillar:hover .pillar-num{ transform: translateX(3px); }
.pillar h3{ font-size: 1.18rem; margin-top: 0.9rem; }
.pillar p{ margin-top: 0.6rem; color: var(--ink-soft); font-size: 0.92rem; }

/* ---------------------------------------------------------
   PUBLICATIONS
   --------------------------------------------------------- */
.pubs{ padding: clamp(4.5rem, 9vw, 7rem) 0; }
.pub-head{
  display:flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 1.5rem;
  margin-bottom: clamp(2rem, 5vw, 3.25rem);
}
.tabs{
  display: flex;
  gap: 0.4rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.3rem;
  background: var(--card);
}
.tab{
  font-family: var(--font-mono);
  font-size: 0.76rem;
  padding: 0.5rem 1.05rem;
  border-radius: 999px;
  color: var(--ink-soft);
  transition: background .25s, color .25s;
}
.tab.is-active{ background: var(--moss-deep); color: var(--paper); }

.pub-list{ border-top: 1px solid var(--line); }
.pub-group-year{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--turmeric);
  letter-spacing: 0.06em;
  padding: 1.6rem 0 0.6rem;
}
.pub-row{
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 1.5rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line-soft);
  transition: background .25s;
}
.pub-row:hover{ background: rgba(62,91,55,0.045); }
.pub-year{ font-family: var(--font-mono); font-size: 0.85rem; color: var(--ink-faint); padding-top: 0.15rem; }
.pub-title{ font-size: 1rem; color: var(--ink); line-height: 1.5; }
.pub-venue{ display:block; margin-top: 0.3rem; font-size: 0.88rem; color: var(--ink-soft); font-style: italic; }
.pub-tag{
  display: inline-block;
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--indigo);
  background: var(--indigo-soft);
  padding: 0.18rem 0.55rem;
  border-radius: 4px;
}
.pub-empty{ padding: 2.5rem 0; color: var(--ink-faint); font-family: var(--font-mono); font-size: 0.85rem; display:none; }

.pubs-more{
  margin-top: 2.2rem;
  display: flex; align-items: center; gap: 0.8rem;
  font-family: var(--font-mono); font-size: 0.85rem; color: var(--ink-soft);
}
.pubs-more a{ color: var(--moss-deep); border-bottom: 1px solid var(--moss-deep); }
.pubs-more a:hover{ color: var(--ink); border-color: var(--ink); }

/* ---------------------------------------------------------
   SCHOLARS
   --------------------------------------------------------- */
.scholars{ padding: clamp(4.5rem, 9vw, 7rem) 0; background: var(--paper-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.scholar-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.scholar-card{
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.9rem 1.7rem;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.scholar-card:hover{
  transform: translateY(-5px);
  box-shadow: 0 18px 34px -20px rgba(27,36,25,0.35);
}
.scholar-top{ display:flex; align-items:flex-start; justify-content: space-between; gap: 1rem; }
.scholar-name{ font-size: 1.18rem; margin-top: 1.1rem; }
.scholar-role{
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 0.35rem;
}
.scholar-focus{ margin-top: 1rem; color: var(--ink-soft); font-size: 0.92rem; }
.scholar-foot{
  margin-top: 1.4rem; padding-top: 1rem; border-top: 1px solid var(--line-soft);
  display:flex; align-items:center; justify-content: space-between;
  font-family: var(--font-mono); font-size: 0.7rem; color: var(--ink-faint); letter-spacing: 0.03em;
}
.scholar-foot em{ color: var(--moss-deep); font-style: normal; font-weight: 600; }

/* ---------------------------------------------------------
   RECOGNITION
   --------------------------------------------------------- */
.recognition{ padding: clamp(4.5rem, 9vw, 7rem) 0; }
.rec-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.rec-card{
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.9rem 1.7rem;
  background: var(--card);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}
.rec-card:hover{
  transform: translateY(-4px);
  box-shadow: 0 20px 36px -24px rgba(27,36,25,0.4);
  border-color: var(--moss);
}
.rec-card h3{ font-size: 1.05rem; margin-top: 1rem; }
.rec-card p{ margin-top: 0.6rem; color: var(--ink-soft); font-size: 0.9rem; }
.rec-card a{ display:inline-block; margin-top: 0.9rem; font-family: var(--font-mono); font-size: 0.78rem; color: var(--moss-deep); border-bottom: 1px solid var(--moss-deep); }
.rec-card a:hover{ color: var(--ink); border-color: var(--ink); }

/* ---------------------------------------------------------
   CONTACT / FOOTER
   --------------------------------------------------------- */
.contact{
  background: var(--night);
  color: var(--night-ink);
  padding: clamp(4.5rem, 9vw, 7rem) 0 2.5rem;
}
.contact .eyebrow{ color: var(--turmeric); }
.contact .eyebrow::before{ background: var(--turmeric); }
.contact h2{ color: var(--night-ink); }
.contact-grid{
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: clamp(2rem, 5vw, 4rem);
  padding-bottom: clamp(3rem, 6vw, 4.5rem);
  border-bottom: 1px solid rgba(216,222,201,0.16);
}
.contact-lede{ font-size: clamp(1.3rem, 2.4vw, 1.8rem); font-family: var(--font-display); max-width: 30ch; color: var(--night-ink); }
.contact-links{ display: flex; flex-direction: column; gap: 1.1rem; margin-top: 1.8rem; }
.contact-links a{
  display:flex; align-items:center; justify-content: space-between;
  font-family: var(--font-mono); font-size: 0.95rem;
  padding-bottom: 0.9rem; border-bottom: 1px solid rgba(216,222,201,0.16);
  color: var(--night-ink);
  transition: opacity .2s, padding-left .25s var(--ease);
}
.contact-links a:hover{ padding-left: 0.4rem; opacity: 0.8; }
.contact-links a span:last-child{ color: rgba(216,222,201,0.5); font-size: 0.8rem; }

.contact-block{ font-size: 0.92rem; color: rgba(216,222,201,0.75); }
.contact-block strong{ color: var(--night-ink); display:block; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 0.5rem; }
.contact-block + .contact-block{ margin-top: 1.8rem; }

.footer-bottom{
  display:flex; flex-wrap: wrap; align-items:center; justify-content: space-between; gap: 1rem;
  padding-top: 1.8rem;
  font-family: var(--font-mono); font-size: 0.75rem;
  color: rgba(216,222,201,0.55);
}
.footer-bottom a{ color: rgba(216,222,201,0.75); }
.footer-bottom a:hover{ color: var(--night-ink); }

.copy-toast{
  position: fixed;
  bottom: 1.6rem; left: 50%;
  transform: translate(-50%, 12px);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.7rem 1.2rem;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s, transform .25s;
  z-index: 200;
}
.copy-toast.is-shown{ opacity: 1; transform: translate(-50%, 0); }

/* ---------------------------------------------------------
   READING PROGRESS — a ledger line tracking position in the dossier
   --------------------------------------------------------- */
.progress-rail{
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2.5px;
  z-index: 300;
  background: transparent;
}
.progress-fill{
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--moss) 0%, var(--turmeric) 100%);
  transition: transform .12s linear;
}

/* ---------------------------------------------------------
   INDEX TABS — fixed section register, echoes the 01–06 eyebrows
   --------------------------------------------------------- */
.index-tabs{
  position: fixed;
  right: clamp(0.9rem, 2vw, 1.8rem);
  top: 50%;
  transform: translateY(-50%);
  z-index: 90;
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  padding: 0.9rem 0.5rem;
}
.index-tabs::before{
  content: "";
  position: absolute;
  left: 50%; top: 0; bottom: 0;
  width: 1px;
  background: var(--line);
  transform: translateX(-50%);
  z-index: -1;
}
.index-tabs a{
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.03em;
  color: var(--ink-faint);
  padding: 0.15rem 0.1rem;
  width: 1.6rem;
  text-align: center;
  transition: color .25s var(--ease), transform .25s var(--ease);
}
/* text-only marker (no pill fill) so it reads correctly over both
   the light paper sections and the dark contact/footer band */
.index-tabs a:hover{ color: var(--turmeric); transform: scale(1.15); }
.index-tabs a.is-active{
  color: var(--turmeric);
  font-weight: 600;
  transform: scale(1.15);
}

@media (min-width: 1340px){
  .index-tabs{ display: flex; }
}

/* ---------------------------------------------------------
   RETURN TO TOP — second impression of the hero seal
   --------------------------------------------------------- */
.to-top{
  position: fixed;
  right: clamp(1.1rem, 3vw, 2.2rem);
  bottom: clamp(1.1rem, 3vw, 2.2rem);
  width: 56px; height: 56px;
  z-index: 150;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--card);
  color: var(--ink);
  font-size: 1.1rem;
  box-shadow: 0 14px 28px -16px rgba(27,36,25,0.4);
  opacity: 0;
  transform: translateY(14px) scale(0.9);
  pointer-events: none;
  transition: opacity .3s var(--ease), transform .3s var(--ease), background .25s, color .25s;
}
.to-top.is-shown{ opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.to-top:hover{ background: var(--moss-deep); color: var(--paper); }
.to-top svg{ position: absolute; inset: 0; width: 56px; height: 56px; }
.to-top-track{ stroke: var(--line); }
.to-top-fill{
  stroke: var(--turmeric);
  stroke-dasharray: 160.2;
  stroke-dashoffset: 160.2;
  transition: stroke-dashoffset .1s linear;
}
.to-top span{ position: relative; z-index: 1; }

/* ---------------------------------------------------------
   RIPPLE — a stamp-press click response, on buttons & tabs
   --------------------------------------------------------- */
.btn, .tab{ position: relative; overflow: hidden; }
.ripple-dot{
  position: absolute;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.28;
  transform: scale(0);
  animation: ripple-out .55s var(--ease) forwards;
  pointer-events: none;
}
@keyframes ripple-out{
  to{ transform: scale(1); opacity: 0; }
}

/* ---------------------------------------------------------
   PUBLICATIONS — search + year ledger chart
   --------------------------------------------------------- */
.pub-toolbar{
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-top: 1.6rem;
  padding-bottom: 1.8rem;
}
.pub-search{
  display: flex;
  align-items: center;
  gap: 0.6rem;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 999px;
  padding: 0.65rem 1.1rem;
  flex: 1 1 260px;
  max-width: 360px;
  transition: border-color .25s;
}
.pub-search:focus-within{ border-color: var(--moss); }
.pub-search svg{ width: 15px; height: 15px; color: var(--ink-faint); flex-shrink: 0; }
.pub-search input{
  border: none; background: none; outline: none;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink);
  width: 100%;
}
.pub-search input::placeholder{ color: var(--ink-faint); }

.pub-yearchart{
  display: flex;
  align-items: flex-end;
  gap: 0.28rem;
  height: 46px;
  overflow-x: auto;
  scrollbar-width: none;
  flex: 1 1 320px;
  max-width: 100%;
}
.pub-yearchart::-webkit-scrollbar{ display: none; }
.year-bar{
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  gap: 0.35rem;
  flex: 0 0 auto;
  height: 100%;
  padding: 0 0.15rem;
}
.year-bar-col{
  width: 9px;
  min-height: 4px;
  border-radius: 3px 3px 0 0;
  background: var(--line);
  transition: background .25s, transform .25s var(--ease);
  transform-origin: bottom;
}
.year-bar:hover .year-bar-col{ background: var(--turmeric-soft); }
.year-bar.is-active .year-bar-col{ background: var(--turmeric); }
.year-bar-label{
  font-family: var(--font-mono);
  font-size: 0.56rem;
  color: var(--ink-faint);
  letter-spacing: 0.02em;
}
.year-bar.is-active .year-bar-label{ color: var(--turmeric); }

.pub-count{
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-faint);
  letter-spacing: 0.03em;
  padding-top: 0.4rem;
}

.pub-row{ opacity: 1; }
.pub-row.is-entering{
  animation: pub-row-in .45s var(--ease) both;
}
@keyframes pub-row-in{
  from{ opacity: 0; transform: translateY(10px); }
  to{ opacity: 1; transform: translateY(0); }
}
.pub-cite{
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  margin-top: 0.6rem;
  margin-left: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-faint);
  border: 1px solid var(--line);
  background: transparent;
  padding: 0.18rem 0.55rem;
  border-radius: 4px;
  transition: color .2s, border-color .2s, background .2s;
}
.pub-cite:hover{ color: var(--moss-deep); border-color: var(--moss); background: rgba(62,91,55,0.06); }

/* ---------------------------------------------------------
   REDUCED MOTION — silence the new interactive layer
   --------------------------------------------------------- */
@media (prefers-reduced-motion: reduce){
  .progress-fill{ transition: none; }
  .to-top{ transition: opacity .01ms, background .01ms, color .01ms; }
  .to-top-fill{ transition: none; }
  .ripple-dot{ display: none; }
  .pub-row.is-entering{ animation: none; }
  .pillar:hover, .rec-card:hover, .scholar-card:hover{ transform: none; }
  .hero-portrait:hover .hero-seal{ transform: rotate(-3deg) scale(1); }
}

/* ---------------------------------------------------------
   RESPONSIVE
   --------------------------------------------------------- */
@media (max-width: 980px){
  .nav-links{ display:none; }
  .nav-toggle{ display:flex; }
  .hero .wrap{ grid-template-columns: 1fr; }
  .hero-seal-col{ align-items:flex-start; flex-direction: row-reverse; justify-content: space-between; }
  .hero-portrait{ width: 150px; }
  .hero-seal{ width: 66px; right: -12px; bottom: -8px; }
  .about .wrap{ grid-template-columns: 1fr; }
  .about-credentials{ border-right:none; border-bottom: 1px solid var(--line); padding-right:0; padding-bottom: 2.5rem; margin-bottom: 2.5rem; }
  .pillars{ grid-template-columns: 1fr 1fr; }
  .scholar-grid{ grid-template-columns: 1fr 1fr; }
  .rec-grid{ grid-template-columns: 1fr 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
  .stat-strip{ grid-template-columns: repeat(2,1fr); }
  .stat:nth-child(3){ border-left: none; padding-left: 0; }
}

@media (max-width: 640px){
  .pillars{ grid-template-columns: 1fr; }
  .scholar-grid{ grid-template-columns: 1fr; }
  .rec-grid{ grid-template-columns: 1fr; }
  .pub-row{ grid-template-columns: 1fr; gap: 0.3rem; }
  .hero-seal-col{ flex-direction: column; align-items: center; }
  .hero-portrait{ width: 190px; }
  .hero-seal{ width: 80px; right: -10px; bottom: -6px; }
  .hero-meta-card{ font-size: 0.82rem; }
  .pub-toolbar{ flex-direction: column; align-items: stretch; }
  .pub-search{ max-width: none; flex: 0 0 auto; }
  .pub-yearchart{ flex: 0 0 auto; max-width: 100%; }
  .pub-yearchart{ height: 40px; }
  .to-top{ width: 46px; height: 46px; }
  .to-top svg{ width: 46px; height: 46px; }
}