/* ═══════════════════════════════════════════════════════════════
   Dr. Prasanna Kumar S Mural — Portfolio
   IIT Bombay · MCPT Lab
   Blue Academic · v2026
   ═══════════════════════════════════════════════════════════════ */

/* ── Tokens ── */
:root {
  --ink: #0d1b3e;
  --ink-soft: #1e3566;
  --mute: #5568a0;
  --mute-2: #8a9bcc;
  --line: #cdd9f0;
  --line-strong: #a8bce0;
  --paper: #f4f7ff;
  --paper-2: #e8eef9;
  --paper-3: #dce6f6;
  --card: #ffffff;
  --indigo: #1a3a7e;
  --indigo-2: #0f2558;
  --indigo-soft: #2a5abf;
  --rust: #2455cc;
  --rust-soft: #4070e0;
  --ochre: #b08020;
  --sage: #2a6640;
  --q1: #2a6640;
  --q1-bg: #e0f0e8;
  --q2: #1a3a7e;
  --q2-bg: #dce6f6;
  --q3: #7a5a10;
  --q3-bg: #f0e8c8;

  --f-display: 'Cormorant Garamond', 'EB Garamond', Georgia, serif;
  --f-body: 'Source Sans 3', system-ui, -apple-system, sans-serif;
  --f-mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --w-wide: 1240px;
  --w-text: 920px;
  --w-narrow: 720px;

  --r-sm: 3px;
  --r-md: 6px;
  --r-lg: 10px;

  --shadow-sm: 0 1px 2px rgba(13,27,62,0.05), 0 1px 3px rgba(13,27,62,0.04);
  --shadow-md: 0 4px 20px rgba(13,27,62,0.08), 0 1px 3px rgba(13,27,62,0.05);
  --shadow-lg: 0 20px 60px rgba(13,27,62,0.14), 0 4px 12px rgba(13,27,62,0.06);

  --ease: cubic-bezier(.2,.7,.2,1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--f-body);
  font-size: 16.5px;
  line-height: 1.72;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
}

::selection { background: var(--indigo); color: var(--paper); }

/* ── Type ── */
h1, h2, h3, h4 { font-family: var(--f-display); font-weight: 500; letter-spacing: -0.01em; color: var(--ink); line-height: 1.15; }
h1 { font-size: clamp(2.6rem, 4.8vw, 4rem); }
h2 { font-size: clamp(2rem, 3.2vw, 2.8rem); }
h3 { font-size: 1.45rem; }
h4 { font-size: 1.05rem; font-family: var(--f-body); font-weight: 600; letter-spacing: 0.02em; text-transform: uppercase; font-size: 0.78rem; color: var(--mute); }

p { margin-bottom: 1em; }
a { color: var(--indigo); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--rust); }
em { font-style: italic; }
strong { font-weight: 600; color: var(--ink); }

.mono { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }
.eyebrow {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rust);
  font-weight: 500;
}

/* ── Layout primitives ── */
.wrap { max-width: var(--w-wide); margin: 0 auto; padding: 0 clamp(1.25rem, 3vw, 2.5rem); }
.wrap-text { max-width: var(--w-text); margin: 0 auto; padding: 0 clamp(1.25rem, 3vw, 2.5rem); }
.rule { height: 1px; background: var(--line); margin: 4rem 0; max-width: var(--w-wide); margin-left: auto; margin-right: auto; }

section { padding: clamp(4rem, 7vw, 6rem) 0; }
section.tight { padding: clamp(2.5rem, 5vw, 4rem) 0; }

/* ── Nav ── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(244,247,255,0.90);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: var(--w-wide); margin: 0 auto;
  padding: 0 clamp(1.25rem, 3vw, 2.5rem);
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.nav-brand { display: flex; flex-direction: column; line-height: 1.1; }
.nav-brand-name {
  font-family: var(--f-display);
  font-size: 1.05rem;
  color: var(--ink);
  font-weight: 500;
  letter-spacing: 0;
}
.nav-brand-sub {
  font-family: var(--f-mono);
  font-size: 0.66rem;
  color: var(--mute);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-top: 3px;
}
.nav-links {
  display: flex; gap: 0.2rem; list-style: none;
  align-items: center;
}
.nav-links a {
  font-family: var(--f-body);
  font-size: 0.82rem;
  color: var(--ink-soft);
  padding: 0.55rem 0.85rem;
  border-radius: var(--r-sm);
  letter-spacing: 0.01em;
  position: relative;
  transition: all .2s var(--ease);
}
.nav-links a:hover { color: var(--rust); background: rgba(184,83,42,0.06); }
.nav-links a.active { color: var(--rust); }
.nav-links a.active::after {
  content: ''; position: absolute;
  left: 0.85rem; right: 0.85rem; bottom: -1px;
  height: 2px; background: var(--rust);
}
.nav-cta {
  margin-left: 0.5rem;
  padding: 0.5rem 1rem !important;
  background: var(--ink) !important;
  color: var(--paper) !important;
  border-radius: 999px !important;
  font-size: 0.78rem !important;
}
.nav-cta:hover { background: var(--rust) !important; }
.nav-toggle {
  display: none;
  background: none; border: 1px solid var(--line-strong);
  width: 40px; height: 40px; border-radius: var(--r-sm);
  cursor: pointer;
  align-items: center; justify-content: center;
}
.nav-toggle span { display: block; width: 16px; height: 1.5px; background: var(--ink); position: relative; }
.nav-toggle span::before, .nav-toggle span::after { content: ''; position: absolute; left: 0; width: 16px; height: 1.5px; background: var(--ink); }
.nav-toggle span::before { top: -5px; }
.nav-toggle span::after { top: 5px; }

/* ── Hero ── */
.hero {
  padding: clamp(3rem, 7vw, 6rem) 0 clamp(2.5rem, 5vw, 4rem);
  position: relative; overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}
.hero-eyebrow {
  display: flex; align-items: center; gap: 0.6rem;
  margin-bottom: 1.3rem;
}
.hero-eyebrow::before {
  content: ''; width: 30px; height: 1px; background: var(--rust);
}
.hero h1 {
  font-size: clamp(2.8rem, 5.5vw, 5rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin-bottom: 1.3rem;
  text-wrap: balance;
}
.hero h1 em {
  font-style: italic;
  color: var(--rust);
  font-weight: 400;
}
.hero-lede {
  font-size: 1.15rem;
  color: var(--ink-soft);
  line-height: 1.6;
  max-width: 48ch;
  margin-bottom: 2rem;
}
.hero-meta {
  display: flex; flex-wrap: wrap; gap: 1.2rem 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  font-size: 0.88rem;
  color: var(--mute);
}
.hero-meta-item { display: flex; flex-direction: column; gap: 2px; }
.hero-meta-label {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--mute-2);
}
.hero-meta-value { color: var(--ink); font-weight: 500; font-size: 0.92rem; }
.hero-meta-value a { color: var(--ink); border-bottom: 1px solid var(--line-strong); }
.hero-meta-value a:hover { color: var(--rust); border-bottom-color: var(--rust); }

.hero-photo {
  position: relative;
  aspect-ratio: 4/5;
  max-height: 520px;
  justify-self: center;
  width: 100%;
  max-width: 420px;
}
.hero-photo img {
  width: 100%; height: 100%; object-fit: cover; object-position: center top;
  border-radius: 4px;
  filter: saturate(0.92) contrast(1.02);
}
.hero-photo::before {
  content: ''; position: absolute;
  top: 18px; left: 18px; right: -18px; bottom: -18px;
  border: 1px solid var(--indigo);
  border-radius: 4px;
  z-index: -1;
  opacity: 0.6;
}
.hero-photo::after {
  content: ''; position: absolute;
  inset: 0;
  border-radius: 4px;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.2);
  pointer-events: none;
}
.hero-photo-caption {
  position: absolute; bottom: -3rem; left: 0;
  font-family: var(--f-mono);
  font-size: 0.68rem;
  color: var(--mute-2);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Hero marquee of interests */
.hero-marquee {
  margin-top: 3rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  position: relative;
}
.hero-marquee-track {
  display: flex; gap: 3rem;
  animation: marquee 45s linear infinite;
  white-space: nowrap;
  font-family: var(--f-display);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--ink-soft);
}
.hero-marquee-track span { display: inline-flex; align-items: center; gap: 3rem; }
.hero-marquee-track span::after {
  content: '✦'; color: var(--rust); font-size: 0.8rem;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ── Page header (interior pages) ── */
.page-header {
  padding: clamp(3rem, 6vw, 5rem) 0 clamp(2rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
}
.page-header .eyebrow { margin-bottom: 1rem; }
.page-header h1 {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.page-header .subtitle {
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 58ch;
  line-height: 1.55;
}

/* ── Section headings ── */
.section-eyebrow {
  display: flex; align-items: center; gap: 0.8rem;
  margin-bottom: 1.5rem;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rust);
}
.section-eyebrow::before {
  content: counter(sec, decimal-leading-zero);
  counter-increment: sec;
  color: var(--mute-2);
  font-weight: 500;
}
body { counter-reset: sec; }

.section-title {
  font-size: clamp(2rem, 3.4vw, 3rem);
  margin-bottom: 0.6rem;
  letter-spacing: -0.015em;
  text-wrap: balance;
}
.section-intro {
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 60ch;
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

/* ── Metrics strip ── */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.metric {
  padding: 1.8rem 1.5rem;
  border-right: 1px solid var(--line);
  position: relative;
}
.metric:last-child { border-right: none; }
.metric-value {
  font-family: var(--f-display);
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  font-weight: 500;
  color: var(--ink);
  line-height: 1;
  letter-spacing: -0.02em;
  display: block;
  margin-bottom: 0.5rem;
  font-variant-numeric: tabular-nums;
}
.metric-label {
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--mute);
}
.metric-sub {
  font-size: 0.72rem;
  color: var(--mute-2);
  margin-top: 0.3rem;
  font-family: var(--f-mono);
}

/* ── Links strip ── */
.academic-links {
  display: flex; flex-wrap: wrap; gap: 0.7rem;
  margin: 2rem 0;
}
.academic-link {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--ink);
  font-size: 0.85rem;
  background: var(--card);
  transition: all .2s var(--ease);
}
.academic-link:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-1px);
}
.academic-link svg { width: 14px; height: 14px; }

/* ── Two-column prose ── */
.two-col {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(1.5rem, 3vw, 3rem);
  align-items: start;
}
.two-col-sticky {
  position: sticky; top: 100px;
}

.prose p { margin-bottom: 1.2em; color: var(--ink-soft); font-size: 1.02rem; line-height: 1.75; }
.prose p.lede { font-size: 1.2rem; color: var(--ink); line-height: 1.55; font-family: var(--f-display); font-style: italic; font-weight: 400; }

/* ── Interest tags (chip style) ── */
.tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag {
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--ink-soft);
  background: transparent;
  transition: all .2s var(--ease);
}
.tag:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); cursor: default; }
.tag.solid { background: var(--indigo); color: var(--paper); border-color: var(--indigo); }
.tag.accent { background: var(--rust); color: var(--paper); border-color: var(--rust); }

/* ── Cards ── */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 1.5rem;
  transition: all .25s var(--ease);
}
.card:hover { border-color: var(--line-strong); box-shadow: var(--shadow-md); transform: translateY(-2px); }

/* ── Themes grid ── */
.themes {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.theme-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: all .3s var(--ease);
}
.theme-card::before {
  content: ''; position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: var(--rust);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.theme-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.theme-card:hover::before { transform: scaleX(1); }
.theme-num {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: var(--mute-2);
  letter-spacing: 0.2em;
  margin-bottom: 1rem;
  display: block;
}
.theme-card h3 {
  font-size: 1.35rem;
  line-height: 1.25;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}
.theme-card p {
  font-size: 0.96rem;
  color: var(--ink-soft);
  line-height: 1.65;
  margin-bottom: 1.2rem;
}
.theme-keywords {
  display: flex; flex-wrap: wrap; gap: 0.4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}
.theme-kw {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  color: var(--mute);
  letter-spacing: 0.04em;
}
.theme-kw::after { content: '·'; margin-left: 0.4rem; color: var(--line-strong); }
.theme-kw:last-child::after { display: none; }

/* ── News list ── */
.news-list { list-style: none; }
.news-item {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  gap: 1.5rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
  transition: all .2s var(--ease);
}
.news-item:hover { padding-left: 0.5rem; }
.news-date {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  color: var(--mute);
  letter-spacing: 0.08em;
  padding-top: 0.2rem;
  text-transform: uppercase;
}
.news-body { font-size: 0.98rem; color: var(--ink-soft); line-height: 1.55; }
.news-body strong { color: var(--ink); }
.news-body em { color: var(--mute); font-style: italic; }
.news-tag {
  font-family: var(--f-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rust);
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--rust);
  border-radius: 999px;
  white-space: nowrap;
  margin-top: 0.15rem;
}
.news-tag.pub { color: var(--q1); border-color: var(--q1); }
.news-tag.grant { color: var(--q3); border-color: var(--q3); }
.news-tag.defense { color: var(--q2); border-color: var(--q2); }

/* ── Timeline ── */
.timeline {
  position: relative;
  padding-left: 2rem;
}
.timeline::before {
  content: ''; position: absolute;
  left: 7px; top: 8px; bottom: 8px;
  width: 1px; background: var(--line-strong);
}
.timeline-item {
  position: relative;
  padding-bottom: 2rem;
  display: grid;
  grid-template-columns: 1fr 120px;
  gap: 1.5rem;
  align-items: start;
}
.timeline-item::before {
  content: ''; position: absolute;
  left: -2rem; top: 10px;
  width: 15px; height: 15px;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  z-index: 1;
}
.timeline-item.current::before {
  background: var(--rust); border-color: var(--rust);
  box-shadow: 0 0 0 4px rgba(184,83,42,0.15);
}
.timeline-title { font-family: var(--f-display); font-size: 1.15rem; color: var(--ink); margin-bottom: 0.2rem; letter-spacing: -0.01em; }
.timeline-sub { font-size: 0.92rem; color: var(--ink-soft); }
.timeline-detail { font-size: 0.88rem; color: var(--mute); margin-top: 0.35rem; line-height: 1.55; }
.timeline-date {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  color: var(--mute);
  letter-spacing: 0.06em;
  text-align: right;
  padding-top: 0.4rem;
}

/* ── Awards ── */
.awards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}
.award {
  padding: 1.3rem 1.4rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--rust);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  transition: all .2s var(--ease);
}
.award:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.award-name { font-family: var(--f-display); font-size: 1.1rem; margin-bottom: 0.3rem; color: var(--ink); letter-spacing: -0.01em; }
.award-meta { font-family: var(--f-mono); font-size: 0.75rem; color: var(--mute); letter-spacing: 0.04em; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  background: var(--ink);
  color: var(--paper);
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all .2s var(--ease);
  cursor: pointer;
  border: none;
  font-family: var(--f-body);
}
.btn:hover { background: var(--rust); color: var(--paper); transform: translateY(-1px); }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line-strong); }
.btn.ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn-group { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 1.5rem; }

/* ── Publications ── */
.pub-controls {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 0.8rem;
  padding: 1.2rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  margin-bottom: 2rem;
  position: sticky;
  top: 80px;
  z-index: 10;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
}
.pub-search {
  position: relative;
}
.pub-search input {
  width: 100%;
  padding: 0.6rem 0.9rem 0.6rem 2.2rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  font-family: var(--f-body);
  font-size: 0.9rem;
  background: var(--paper);
  color: var(--ink);
  transition: all .2s var(--ease);
}
.pub-search input:focus { outline: none; border-color: var(--ink); background: var(--card); }
.pub-search svg {
  position: absolute; left: 0.7rem; top: 50%; transform: translateY(-50%);
  width: 16px; height: 16px; color: var(--mute);
}
.pub-controls select {
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  font-family: var(--f-body);
  font-size: 0.9rem;
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
}
.pub-controls select:focus { outline: none; border-color: var(--ink); }
.pub-result-count {
  font-family: var(--f-mono);
  font-size: 0.78rem;
  color: var(--mute);
  margin-bottom: 1rem;
  letter-spacing: 0.04em;
}

.pub-year-header {
  font-family: var(--f-display);
  font-size: 2.2rem;
  margin: 2.5rem 0 1rem;
  color: var(--ink);
  display: flex; align-items: baseline; gap: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
}
.pub-year-header:first-child { margin-top: 0; }
.pub-year-count {
  font-family: var(--f-mono);
  font-size: 0.8rem;
  color: var(--mute);
  letter-spacing: 0.08em;
}
.pub-entry {
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: 1.2rem;
  padding: 1.3rem 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
  transition: all .2s var(--ease);
}
.pub-entry:hover { padding-left: 0.5rem; }
.pub-num {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  color: var(--mute-2);
  letter-spacing: 0.04em;
  padding-top: 0.2rem;
}
.pub-authors { font-size: 0.92rem; color: var(--ink-soft); line-height: 1.5; margin-bottom: 0.3rem; }
.pub-authors strong { color: var(--ink); font-weight: 600; }
.pub-title {
  font-family: var(--f-display);
  font-size: 1.1rem;
  color: var(--ink);
  line-height: 1.35;
  letter-spacing: -0.005em;
  margin-bottom: 0.4rem;
  font-weight: 500;
}
.pub-journal { font-size: 0.88rem; color: var(--mute); font-style: italic; margin-bottom: 0.5rem; }
.pub-journal em { color: var(--ink); font-style: italic; font-weight: 500; }
.pub-badges { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-top: 0.4rem; align-items: center; }
.badge {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  padding: 0.18rem 0.55rem;
  border-radius: 2px;
  font-weight: 500;
  text-transform: uppercase;
  white-space: nowrap;
}
.badge-q1 { background: var(--q1-bg); color: var(--q1); }
.badge-q2 { background: var(--q2-bg); color: var(--q2); }
.badge-q3 { background: var(--q3-bg); color: var(--q3); }
.badge-if { background: var(--paper-2); color: var(--mute); border: 1px solid var(--line); }
.badge-theme {
  background: transparent;
  color: var(--mute);
  border: 1px solid var(--line-strong);
  letter-spacing: 0.05em;
}
.pub-doi { margin-left: auto; font-family: var(--f-mono); font-size: 0.72rem; color: var(--mute); }
.pub-doi:hover { color: var(--rust); }

.pub-stats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  padding: 1.5rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  margin-bottom: 2rem;
}
.pub-stat { text-align: center; padding: 0 0.5rem; border-right: 1px solid var(--line); }
.pub-stat:last-child { border-right: none; }
.pub-stat-num { font-family: var(--f-display); font-size: 2rem; color: var(--ink); display: block; line-height: 1; margin-bottom: 0.3rem; letter-spacing: -0.02em; }
.pub-stat-label { font-family: var(--f-mono); font-size: 0.65rem; color: var(--mute); letter-spacing: 0.1em; text-transform: uppercase; }

/* ── Publications: sub nav ── */
.pub-nav {
  display: flex; gap: 0.5rem; flex-wrap: wrap;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}
.pub-nav a {
  padding: 0.5rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--ink-soft);
  transition: all .2s var(--ease);
}
.pub-nav a:hover, .pub-nav a.active {
  background: var(--ink); color: var(--paper); border-color: var(--ink);
}

/* Book entries */
.book-entry {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: 1.2rem;
}
.book-title {
  font-family: var(--f-display);
  font-size: 1.15rem;
  color: var(--ink);
  letter-spacing: -0.005em;
  margin-bottom: 0.4rem;
  line-height: 1.3;
}
.book-details { font-size: 0.9rem; color: var(--mute); line-height: 1.6; }

/* ── Group page ── */
.group-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 4vw, 4rem);
  align-items: center;
  margin-bottom: 3rem;
}
.group-hero-photo {
  aspect-ratio: 4/3;
  background: var(--paper-2);
  border-radius: var(--r-md);
  overflow: hidden;
  position: relative;
}
.group-hero-photo img { width: 100%; height: 100%; object-fit: cover; }
.group-hero-photo::after {
  content: '';
  position: absolute; inset: 0;
  box-shadow: inset 0 0 0 1px rgba(17,20,24,0.08);
  border-radius: var(--r-md);
  pointer-events: none;
}

.group-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 3rem;
}
.group-stat {
  padding: 1.3rem 1rem;
  text-align: center;
  border-right: 1px solid var(--line);
}
.group-stat:last-child { border-right: none; }
.group-stat-num {
  font-family: var(--f-display);
  font-size: 2.4rem;
  color: var(--ink);
  line-height: 1;
  letter-spacing: -0.02em;
}
.group-stat-label {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  color: var(--mute);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 0.5rem;
}

.members-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}
.member {
  background: var(--card);
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
  transition: all .25s var(--ease);
  display: flex;
  flex-direction: column;
}
.member:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.member-photo {
  aspect-ratio: 1/1;
  background: var(--paper-2);
  position: relative;
  display: flex; align-items: center; justify-content: center;
  color: var(--mute-2);
  overflow: hidden;
}
.member-photo svg { width: 40%; height: 40%; stroke: var(--line-strong); fill: none; stroke-width: 1.2; }
.member-photo img { width: 100%; height: 100%; object-fit: cover; }
.member-initials {
  font-family: var(--f-display);
  font-size: 2.2rem;
  color: var(--indigo);
  letter-spacing: -0.02em;
  position: absolute;
  background: linear-gradient(135deg, var(--paper-2), var(--paper-3));
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
}
.member-info { padding: 1.1rem 1.2rem 1.3rem; flex: 1; display: flex; flex-direction: column; }
.member-name { font-family: var(--f-display); font-size: 1.1rem; color: var(--ink); line-height: 1.25; margin-bottom: 0.2rem; letter-spacing: -0.005em; }
.member-role {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  color: var(--rust);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.member-topic {
  font-size: 0.85rem;
  color: var(--ink-soft);
  line-height: 1.55;
  font-style: italic;
  margin-top: auto;
  padding-top: 0.6rem;
}
.member-coi {
  font-size: 0.78rem;
  color: var(--mute);
  margin-bottom: 0.4rem;
}
.member-status {
  position: absolute; top: 0.6rem; right: 0.6rem;
  font-family: var(--f-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 2px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(4px);
}
.member-status.current { color: var(--q1); }
.member-status.graduated { color: var(--q2); }

.sub-heading {
  font-family: var(--f-mono);
  font-size: 0.78rem;
  color: var(--mute);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin: 2rem 0 1.2rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--line);
  display: flex; align-items: center; gap: 0.8rem;
}
.sub-heading-count {
  color: var(--mute-2);
  font-size: 0.72rem;
}

.compact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.8rem;
}
.compact {
  padding: 0.9rem 1.1rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  transition: all .2s var(--ease);
}
.compact:hover { border-color: var(--line-strong); }
.compact-name { font-family: var(--f-display); font-size: 0.98rem; color: var(--ink); margin-bottom: 0.1rem; }
.compact-meta { font-family: var(--f-mono); font-size: 0.7rem; color: var(--mute); letter-spacing: 0.04em; }

/* ── Teaching ── */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}
.course {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 1.8rem;
  transition: all .25s var(--ease);
  position: relative;
  overflow: hidden;
}
.course:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.course-code {
  font-family: var(--f-mono);
  font-size: 0.85rem;
  color: var(--rust);
  letter-spacing: 0.1em;
  font-weight: 500;
}
.course-name {
  font-family: var(--f-display);
  font-size: 1.3rem;
  color: var(--ink);
  margin: 0.5rem 0 0.8rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.course-desc { font-size: 0.92rem; color: var(--ink-soft); line-height: 1.65; margin-bottom: 1rem; }
.course-meta {
  display: flex; gap: 0.5rem; flex-wrap: wrap;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}
.course-badge {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
  background: var(--paper-2);
  color: var(--mute);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.course-badge.ug { background: var(--q2-bg); color: var(--q2); }
.course-badge.pg { background: var(--q1-bg); color: var(--q1); }
.course-badge.lab { background: var(--q3-bg); color: var(--q3); }

.semesters { margin-top: 2rem; }
.acad-year {
  font-family: var(--f-display);
  font-size: 1.6rem;
  color: var(--ink);
  margin: 2rem 0 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--line);
  letter-spacing: -0.01em;
}
.sem-block { margin-bottom: 1.5rem; }
.sem-label {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  color: var(--mute);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.sem-row {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 1rem;
  padding: 0.7rem 0;
  border-bottom: 1px dashed var(--line);
  align-items: center;
}
.sem-code { font-family: var(--f-mono); font-size: 0.82rem; color: var(--indigo); letter-spacing: 0.06em; }
.sem-name { font-size: 0.95rem; color: var(--ink); }
.sem-credits { font-family: var(--f-mono); font-size: 0.72rem; color: var(--mute); }

/* ── Projects ── */
.project-list { list-style: none; }
.project {
  display: grid;
  grid-template-columns: 70px 1fr auto;
  gap: 1.5rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
  transition: all .2s var(--ease);
}
.project:hover { background: var(--card); padding-left: 1rem; padding-right: 1rem; }
.project-year {
  font-family: var(--f-mono);
  font-size: 0.82rem;
  color: var(--rust);
  letter-spacing: 0.06em;
  padding-top: 0.2rem;
}
.project-title { font-family: var(--f-display); font-size: 1.1rem; color: var(--ink); line-height: 1.35; margin-bottom: 0.3rem; letter-spacing: -0.005em; }
.project-agency { font-size: 0.86rem; color: var(--mute); }
.project-role {
  font-family: var(--f-mono); font-size: 0.7rem;
  color: var(--ink); background: var(--paper-2);
  padding: 0.2rem 0.55rem;
  border-radius: 2px;
  letter-spacing: 0.08em; text-transform: uppercase;
  white-space: nowrap;
}
.project-amount {
  font-family: var(--f-mono);
  font-size: 0.85rem;
  color: var(--ink);
  font-weight: 500;
  padding-top: 0.2rem;
}

/* ── Openings ── */
.openings-box {
  background: var(--indigo);
  color: var(--paper);
  padding: clamp(2rem, 4vw, 3.5rem);
  border-radius: var(--r-lg);
  margin: 3rem 0;
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 2.5rem;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.openings-box::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(64,112,224,0.20) 0%, transparent 70%);
  pointer-events: none;
}
.openings-box .eyebrow { color: var(--rust-soft); margin-bottom: 0.8rem; }
.openings-box h2 { color: var(--paper); font-size: clamp(1.8rem, 3vw, 2.4rem); letter-spacing: -0.015em; line-height: 1.1; }
.openings-box p { font-size: 1rem; color: rgba(248,245,239,0.82); line-height: 1.65; margin-bottom: 1.5rem; }
.openings-box p:last-of-type { margin-bottom: 0; }
.openings-box a.btn {
  background: var(--paper); color: var(--ink);
}
.openings-box a.btn:hover { background: var(--rust); color: var(--paper); }

.openings-list { display: grid; gap: 1rem; position: relative; z-index: 1; }
.opening-item {
  padding: 1.2rem 1.4rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--r-md);
  backdrop-filter: blur(4px);
}
.opening-type {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  color: var(--rust-soft);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}
.opening-title { font-family: var(--f-display); font-size: 1.1rem; color: var(--paper); line-height: 1.3; margin-bottom: 0.3rem; }
.opening-desc { font-size: 0.88rem; color: rgba(248,245,239,0.7); line-height: 1.5; }

/* ── Service ── */
.event-list { list-style: none; }
.event {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 1.5rem;
  padding: 1.3rem 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}
.event-year { font-family: var(--f-mono); font-size: 0.82rem; color: var(--rust); letter-spacing: 0.06em; padding-top: 0.2rem; }
.event-role {
  font-family: var(--f-mono);
  font-size: 0.68rem;
  padding: 0.2rem 0.55rem;
  border-radius: 2px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: inline-block;
  margin-bottom: 0.4rem;
}
.event-role.convenor { background: var(--q1-bg); color: var(--q1); }
.event-role.coord { background: var(--q2-bg); color: var(--q2); }
.event-role.chair { background: var(--q3-bg); color: var(--q3); }
.event-title { font-family: var(--f-display); font-size: 1.08rem; color: var(--ink); line-height: 1.35; margin-bottom: 0.2rem; letter-spacing: -0.005em; }
.event-venue { font-size: 0.88rem; color: var(--mute); }

.editor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}
.editor {
  padding: 1.2rem 1.4rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--rust);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}
.editor-journal { font-family: var(--f-display); font-size: 1.05rem; color: var(--ink); line-height: 1.3; margin-bottom: 0.3rem; }
.editor-publisher { font-size: 0.85rem; color: var(--mute); }
.editor-years { font-family: var(--f-mono); font-size: 0.72rem; color: var(--rust); letter-spacing: 0.08em; margin-top: 0.4rem; }

.review-list {
  columns: 3;
  column-gap: 2rem;
  list-style: none;
}
@media (max-width: 860px) { .review-list { columns: 2; } }
@media (max-width: 520px) { .review-list { columns: 1; } }
.review-list li {
  padding: 0.5rem 0;
  border-bottom: 1px dashed var(--line);
  font-size: 0.88rem;
  color: var(--ink-soft);
  break-inside: avoid;
}

.membership-list { list-style: none; max-width: 640px; }
.membership {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--line);
  align-items: center;
}
.membership-year { font-family: var(--f-mono); font-size: 0.82rem; color: var(--rust); }
.membership-name { font-size: 0.96rem; color: var(--ink); }
.membership-abbr { font-family: var(--f-mono); font-size: 0.72rem; color: var(--mute); margin-left: 0.5rem; letter-spacing: 0.08em; }

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
}
.service-item {
  padding: 1.3rem 1.4rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}
.service-role { font-family: var(--f-display); font-size: 1.05rem; color: var(--ink); margin-bottom: 0.3rem; }
.service-desc { font-size: 0.88rem; color: var(--ink-soft); line-height: 1.55; margin-bottom: 0.3rem; }
.service-since { font-family: var(--f-mono); font-size: 0.72rem; color: var(--rust); letter-spacing: 0.08em; }

/* ── Contact ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: start;
}
.contact-item {
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}
.contact-item:last-of-type { border-bottom: none; }
.contact-label {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  color: var(--mute);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}
.contact-value { font-size: 1rem; color: var(--ink); line-height: 1.55; }
.contact-value a { color: var(--ink); border-bottom: 1px solid var(--line-strong); }
.contact-value a:hover { color: var(--rust); border-bottom-color: var(--rust); }

.contact-map {
  background: var(--indigo);
  color: var(--paper);
  padding: 2rem;
  border-radius: var(--r-md);
  aspect-ratio: 4/5;
  max-height: 500px;
  display: flex; flex-direction: column; justify-content: space-between;
  position: relative;
  overflow: hidden;
}
.contact-map::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.contact-map-meta { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--rust-soft); position: relative; }
.contact-map-title { font-family: var(--f-display); font-size: 1.8rem; letter-spacing: -0.01em; line-height: 1.15; position: relative; }
.contact-map-addr { font-size: 0.88rem; color: rgba(248,245,239,0.75); line-height: 1.55; position: relative; }

/* ── Footer ── */
footer {
  background: var(--ink);
  color: var(--paper-2);
  padding: 4rem 0 2rem;
  margin-top: 4rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand-name { font-family: var(--f-display); font-size: 1.4rem; color: var(--paper); margin-bottom: 0.3rem; letter-spacing: -0.01em; }
.footer-brand-sub { font-family: var(--f-mono); font-size: 0.72rem; color: var(--mute-2); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 1rem; }
.footer-tag { font-size: 0.88rem; color: rgba(248,245,239,0.6); line-height: 1.6; max-width: 40ch; }
.footer-col h5 {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: var(--mute-2);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  font-weight: 500;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.5rem; }
.footer-col a { color: rgba(248,245,239,0.75); font-size: 0.9rem; transition: color .2s var(--ease); }
.footer-col a:hover { color: var(--rust-soft); }
.footer-bottom {
  padding-top: 1.5rem;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: var(--mute-2);
  letter-spacing: 0.06em;
}

/* ── Utilities ── */
.hidden { display: none !important; }
.reveal { opacity: 0; transform: translateY(20px); transition: all .7s var(--ease); }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ── Responsive ── */
@media (max-width: 980px) {
  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; background: var(--paper); border-bottom: 1px solid var(--line);
    padding: 1rem; gap: 0.2rem; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: inline-flex; }
  .hero-grid { grid-template-columns: 1fr; gap: 2rem; }
  .hero-photo { order: -1; max-width: 320px; }
  .themes { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .openings-box { grid-template-columns: 1fr; }
  .group-hero { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .pub-controls { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .metrics, .group-stats { grid-template-columns: repeat(2, 1fr); }
  .metric:nth-child(2), .group-stat:nth-child(2) { border-right: none; }
  .metric:nth-child(1), .metric:nth-child(2), .group-stat:nth-child(1), .group-stat:nth-child(2) { border-bottom: 1px solid var(--line); }
  .pub-stats { grid-template-columns: repeat(2, 1fr); }
  .pub-stat { border-right: none; border-bottom: 1px solid var(--line); padding-bottom: 1rem; }
  .news-item, .timeline-item, .event, .project, .sem-row { grid-template-columns: 1fr; }
  .news-date, .timeline-date, .event-year, .project-year { font-size: 0.72rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .pub-controls { grid-template-columns: 1fr; position: static; }
  .pub-entry { grid-template-columns: 1fr; }
  .pub-num { display: none; }
}

/* Print */
@media print {
  .nav, footer, .nav-cta, .pub-controls { display: none; }
  body { background: white; color: black; }
  .card, .theme-card { break-inside: avoid; }
}