/* ─────────────────────────────────────────────────────────
   Sumit Kumar — academic site
   Shared styles. Interactive page sets <body class="interactive">.
   Reading pages set <body class="reading"> (no canvas, normal cursor).
   ───────────────────────────────────────────────────────── */

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

:root {
  --gold: #c9a84c;
  --gold-dim: rgba(201,168,76,0.15);
  --gold-line: rgba(201,168,76,0.1);
  --amber: #f0a500;
  --bg: #030508;
  --text: #e8e0d0;
  --dim: rgba(232,224,208,0.45);
  --hairline: rgba(255,255,255,0.06);
  --green: #5dfc8a;
}

html, body {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Rajdhani', sans-serif;
  overflow-x: hidden;
}

/* Default link styling — any anchor without a more-specific rule */
a {
  color: var(--gold);
  text-decoration: none;
}
a:hover { color: var(--amber); }

body.interactive { cursor: none; }
body.interactive a, body.interactive button { cursor: none; }

/* ── CUSTOM CURSOR (interactive only) ── */
#cursor {
  position: fixed; top: 0; left: 0; pointer-events: none;
  width: 12px; height: 12px;
  border: 1.5px solid var(--gold);
  border-radius: 50%;
  transform: translate(-50%,-50%);
  transition: transform 0.1s, opacity 0.2s;
  z-index: 9999;
}
#cursor-ring {
  position: fixed; top: 0; left: 0; pointer-events: none;
  width: 36px; height: 36px;
  border: 1px solid rgba(201,168,76,0.4);
  border-radius: 50%;
  transform: translate(-50%,-50%);
  transition: transform 0.18s ease, width 0.3s, height 0.3s;
  z-index: 9998;
}

/* ── SPACETIME CANVAS ── */
#spacetime {
  position: fixed; inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
}

/* ── CONTENT LAYER ── */
.page {
  position: relative; z-index: 10;
  min-height: 100vh;
}

/* ── STATIC BACKDROP (reading pages) ── */
body.reading::before {
  content: '';
  position: fixed; inset: 0;
  background:
    radial-gradient(circle at 15% 10%, rgba(201,168,76,0.05), transparent 55%),
    radial-gradient(circle at 85% 90%, rgba(201,168,76,0.04), transparent 50%),
    repeating-linear-gradient(0deg, transparent, transparent 54px, rgba(201,168,76,0.025) 54px, rgba(201,168,76,0.025) 55px),
    repeating-linear-gradient(90deg, transparent, transparent 54px, rgba(201,168,76,0.025) 54px, rgba(201,168,76,0.025) 55px);
  z-index: 0;
  pointer-events: none;
}

/* ── HEADER ── */
header {
  padding: 3rem 4rem 1.5rem;
  display: flex; align-items: flex-start; justify-content: space-between;
  border-bottom: 1px solid var(--gold-dim);
}
.logo {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.72rem;
  color: var(--gold);
  letter-spacing: 0.12em;
  line-height: 1.8;
}
.logo a { color: inherit; text-decoration: none; }
nav {
  display: flex; gap: 2.5rem;
  font-size: 0.78rem; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--dim);
}
nav a {
  color: inherit; text-decoration: none;
  transition: color 0.2s;
  position: relative;
}
nav a::after {
  content: ''; position: absolute;
  bottom: -3px; left: 0; right: 0; height: 1px;
  background: var(--gold);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s;
}
nav a:hover, nav a.current { color: var(--gold); }
nav a:hover::after, nav a.current::after { transform: scaleX(1); }

/* ── HERO ── */
.hero {
  padding: 0.5rem 4rem 4rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 620px);
  gap: 5rem;
  align-items: start;
}
.hero-text {
  max-width: 640px;
  padding-top: 5rem; /* breathing room from header so text isn't cramped */
}
.hero-image {
  position: relative;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  /* gentle, slow vertical bob — suggests the cryostat hanging in its tube */
  animation: cryostat-float 8s ease-in-out infinite;
  will-change: transform;
}
@keyframes cryostat-float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}
.hero-image img {
  width: 100%;
  height: auto;
  max-height: 95vh;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 0 60px rgba(201,168,76,0.1));
  transition: transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1),
              filter 0.8s ease-out;
  transform-origin: center;
  will-change: transform, filter;
}
.hero-image:hover img {
  transform: scale(1.07);
  filter: drop-shadow(0 0 140px rgba(201,168,76,0.35))
          drop-shadow(0 0 50px rgba(240,165,0,0.22))
          brightness(1.10) contrast(1.04);
}
.hero-image figcaption {
  margin-top: 1.4rem;
  display: flex; flex-direction: column;
  gap: 0.5rem;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dim);
  line-height: 1.65;
  text-align: right;
  transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1),
              opacity 0.4s ease-out;
}
.hero-image:hover figcaption {
  transform: translateY(-6px);
  opacity: 1;
}
.hero-image figcaption .caption-line { color: var(--gold); }
.hero-image figcaption .lab {
  color: var(--gold);
  border-bottom: 1px solid var(--gold-dim);
  padding-bottom: 1px;
  transition: color 0.3s, border-color 0.3s, letter-spacing 0.3s;
}
.hero-image:hover figcaption .lab {
  color: var(--amber);
  border-color: var(--amber);
  letter-spacing: 0.22em;
}
.hero-label {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.68rem;
  color: var(--gold);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: flex; align-items: center; gap: 0.8rem;
}
.hero-label::before {
  content: '';
  display: inline-block; width: 28px; height: 1px;
  background: var(--gold);
}
h1 {
  font-family: 'EB Garamond', serif;
  font-size: clamp(2.6rem, 5.5vw, 4.6rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 1.8rem;
}
h1 em {
  font-style: italic;
  color: var(--gold);
}
.hero-sub {
  font-size: 1.05rem;
  color: var(--dim);
  line-height: 1.75;
  max-width: 620px;
  font-weight: 300;
}

/* ── STATUS / FREQ BAR ── */
.status-bar {
  margin: 4rem 4rem 0;
  padding: 1.5rem 2rem;
  border: 1px solid rgba(201,168,76,0.2);
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: space-between; gap: 3rem;
}
.status-label {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
  white-space: nowrap;
  margin-bottom: 0.4rem;
}
.status-display {
  font-family: 'Share Tech Mono', monospace;
  font-size: 1.05rem;
  color: var(--amber);
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.status-display.active {
  color: var(--green);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
}
.status-unit { font-size: 0.7rem; color: var(--dim); margin-left: 4px; }

/* ── RESEARCH CARDS (5 themes: 3 + 2 layout) ── */
.cards {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  margin: 4rem 4rem 0;
  border: 1px solid var(--gold-dim);
}
.card {
  grid-column: span 2;
  padding: 2.5rem;
  background: rgba(3,5,8,0.85);
  backdrop-filter: blur(12px);
  border-right: 1px solid var(--gold-line);
  transition: background 0.3s;
  position: relative; overflow: hidden;
  display: block;
  text-decoration: none;
  color: inherit;
}
a.card:hover { background: rgba(8,12,18,0.95); color: inherit; }
.card .read-more {
  margin-top: 1.2rem;
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  opacity: 0.7;
  transition: opacity 0.3s, gap 0.3s;
}
a.card:hover .read-more { opacity: 1; gap: 0.9rem; }
.card:nth-child(4), .card:nth-child(5) { grid-column: span 3; }
.card:nth-child(1), .card:nth-child(2), .card:nth-child(3) {
  border-bottom: 1px solid var(--gold-line);
}
.card:nth-child(3), .card:nth-child(5) { border-right: none; }
.card .card-link {
  display: inline-block;
  margin-top: 0.9rem;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-dim);
  padding-bottom: 2px;
  transition: border-color 0.2s;
}
.card .card-link:hover { border-color: var(--gold); }
.card::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(201,168,76,0.06), transparent 60%);
  opacity: 0; transition: opacity 0.4s;
}
.card:hover::before { opacity: 1; }
.card-num {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.6rem;
  color: rgba(201,168,76,0.45);
  letter-spacing: 0.2em;
  margin-bottom: 1.5rem;
}
.card h3 {
  font-family: 'EB Garamond', serif;
  font-size: 1.35rem;
  font-weight: 400;
  margin-bottom: 0.9rem;
  line-height: 1.3;
}
.card p {
  font-size: 0.9rem;
  color: var(--dim);
  line-height: 1.7;
  font-weight: 300;
}
.card-accent {
  width: 28px; height: 2px;
  background: var(--gold);
  margin-top: 1.5rem;
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.4s 0.1s;
}
.card:hover .card-accent { transform: scaleX(1); }

/* ── ABOUT ── */
.about {
  margin: 5rem 4rem 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  padding-bottom: 5rem;
  border-bottom: 1px solid rgba(201,168,76,0.1);
}
.about-left h2 {
  font-family: 'EB Garamond', serif;
  font-size: 2.2rem;
  font-weight: 400;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}
.about-left p {
  font-size: 0.95rem;
  color: var(--dim);
  line-height: 1.85;
  margin-bottom: 1rem;
  font-weight: 300;
}
.about-right { padding-top: 0.5rem; }
.stat-row {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--hairline);
  gap: 1rem;
}
.stat-row:first-child { border-top: 1px solid var(--hairline); }
.stat-key {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--dim);
  text-transform: uppercase;
  white-space: nowrap;
}
.stat-val {
  font-family: 'EB Garamond', serif;
  font-size: 1.15rem;
  color: var(--amber);
  text-align: right;
}

/* ── HOME: SELECTED PUBLICATIONS PREVIEW ── */
.recent {
  margin: 5rem 4rem 0;
}
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--gold-dim);
}
.section-head .label {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--gold);
  text-transform: uppercase;
}
.section-head .more {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.2s;
}
.section-head .more:hover { color: var(--amber); }
.recent-list { list-style: none; }
.recent-list li {
  display: grid;
  grid-template-columns: 60px 90px 1fr;
  gap: 1.5rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--hairline);
  align-items: baseline;
}
.recent-num, .recent-year {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: rgba(201,168,76,0.55);
}
.recent-title {
  font-family: 'EB Garamond', serif;
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--text);
}
.recent-venue {
  display: block;
  font-size: 0.78rem;
  color: var(--gold);
  font-style: italic;
  margin-top: 0.3rem;
  letter-spacing: 0.02em;
}

/* ── CONTACT STRIP ── */
.contact {
  margin: 5rem 4rem 0;
  padding: 3rem 0;
  border-top: 1px solid var(--gold-dim);
  border-bottom: 1px solid var(--gold-dim);
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  align-items: start;
}
.contact h2 {
  font-family: 'EB Garamond', serif;
  font-size: 2rem;
  font-weight: 400;
}
.contact-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem 3rem;
}
.contact-item .k {
  display: block;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  color: var(--dim);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}
.contact-item a, .contact-item span {
  color: var(--text);
  text-decoration: none;
  font-size: 1rem;
  transition: color 0.2s;
  word-break: break-word;
}
.contact-item a {
  color: var(--gold);
  border-bottom: 1px solid var(--gold-dim);
  padding-bottom: 1px;
  transition: border-color 0.2s, color 0.2s;
}
.contact-item a:hover { color: var(--amber); border-color: var(--gold); }

/* ── FOOTER ── */
footer {
  padding: 2rem 4rem;
  display: flex; justify-content: space-between; align-items: center;
  gap: 2rem;
}
footer span {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.62rem;
  color: rgba(232,224,208,0.25);
  letter-spacing: 0.15em;
}
footer a {
  color: var(--gold) !important;
  text-decoration: none !important;
  border-bottom: 1px solid var(--gold-dim);
  padding-bottom: 1px;
  transition: border-color 0.2s, color 0.2s;
}
footer a:hover { color: var(--amber) !important; border-color: var(--gold); }

/* ── RIPPLE ── */
.ripple-container {
  position: fixed; inset: 0;
  pointer-events: none; z-index: 5;
  overflow: hidden;
}
.ripple {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(201,168,76,0.5);
  transform: translate(-50%,-50%) scale(0);
  animation: ripple-out 1.4s ease-out forwards;
  pointer-events: none;
}
@keyframes ripple-out {
  to { transform: translate(-50%,-50%) scale(6); opacity: 0; }
}

/* ─────────────────────────────────────────────────────────
   READING PAGES (publications, CV)
   ───────────────────────────────────────────────────────── */
.reading-hero {
  padding: 6rem 4rem 3rem;
  border-bottom: 1px solid var(--gold-dim);
}
.reading-hero .hero-label { margin-bottom: 1rem; }
.reading-hero h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  margin: 0;
}
.reading-hero p {
  margin-top: 1.2rem;
  color: var(--dim);
  max-width: 680px;
  font-weight: 300;
  line-height: 1.7;
}

.reading-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 4rem 5rem;
}

/* Publications */
.pub-block { margin-bottom: 3.5rem; }
.pub-block-header {
  display: flex; align-items: baseline; gap: 1.2rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--gold-dim);
}
.pub-block-header .year {
  font-family: 'EB Garamond', serif;
  font-size: 1.8rem;
  color: var(--amber);
}
.pub-block-header .tag {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--dim);
  text-transform: uppercase;
}
.pub {
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: 1.5rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--hairline);
}
.pub-num {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: rgba(201,168,76,0.45);
  padding-top: 0.25rem;
}
.pub-title {
  font-family: 'EB Garamond', serif;
  font-size: 1.15rem;
  line-height: 1.45;
  color: var(--text);
  margin-bottom: 0.4rem;
}
.pub-authors {
  font-size: 0.85rem;
  color: var(--dim);
  line-height: 1.6;
  margin-bottom: 0.3rem;
}
.pub-authors .me { color: var(--text); font-weight: 600; }
.pub-venue {
  font-size: 0.85rem;
  color: var(--gold);
  font-style: italic;
  letter-spacing: 0.02em;
}
.pub-links {
  margin-top: 0.5rem;
  display: flex; gap: 1rem; flex-wrap: wrap;
}
.pub-links a {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  text-decoration: none;
  border: 1px solid var(--gold-dim);
  padding: 0.35rem 0.7rem;
  transition: background 0.2s, border-color 0.2s;
}
.pub-links a:hover { background: rgba(201,168,76,0.08); border-color: var(--gold); }

/* CV page */
.cv-download {
  display: inline-flex; align-items: center; gap: 0.7rem;
  margin-top: 1.5rem;
  padding: 0.8rem 1.4rem;
  border: 1px solid var(--gold);
  color: var(--gold);
  text-decoration: none;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  transition: background 0.2s;
}
.cv-download:hover { background: rgba(201,168,76,0.08); }
.cv-download::before {
  content: '↓';
  font-family: inherit;
}

.cv-section { margin-bottom: 3.5rem; }
.cv-section-head {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--gold-dim);
}
.cv-entry {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--hairline);
}
.cv-entry-meta {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--gold);
  text-transform: uppercase;
  padding-top: 0.2rem;
}
.cv-entry-body h4 {
  font-family: 'EB Garamond', serif;
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 0.3rem;
  color: var(--text);
}
.cv-entry-body .org {
  font-size: 0.95rem;
  color: var(--dim);
  margin-bottom: 0.6rem;
  font-style: italic;
}
.cv-entry-body ul {
  list-style: none;
  margin-top: 0.5rem;
}
.cv-entry-body ul li {
  padding-left: 1.2rem;
  position: relative;
  font-size: 0.9rem;
  color: var(--dim);
  line-height: 1.7;
  margin-bottom: 0.3rem;
}
.cv-entry-body ul li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-size: 1.4rem;
  line-height: 1;
}

.cv-talks li, .cv-awards li {
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--hairline);
  font-size: 0.92rem;
  color: var(--dim);
  line-height: 1.6;
  list-style: none;
  display: grid;
  grid-template-columns: 110px 90px 1fr;
  gap: 1rem;
  align-items: baseline;
}
.cv-talks .type, .cv-awards .year {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  color: var(--gold);
  text-transform: uppercase;
}
.cv-talks .year {
  color: var(--amber);
  font-family: 'EB Garamond', serif;
  font-size: 1rem;
  letter-spacing: 0;
}
.cv-talks .body, .cv-awards .body { color: var(--text); }
.cv-awards li { grid-template-columns: 90px 1fr; }

/* ── RESEARCH SUB-PAGES ── */
.research-body p {
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--text);
  margin-bottom: 1.4rem;
  font-weight: 300;
  max-width: 760px;
}
.research-body p strong { color: var(--gold); font-weight: 500; }
.research-body a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-dim);
  transition: border-color 0.2s;
}
.research-body a:hover { border-color: var(--gold); }

.research-questions {
  list-style: none;
  margin-top: 0.5rem;
}
.research-questions li {
  padding: 1rem 0 1rem 2rem;
  border-bottom: 1px solid var(--hairline);
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.7;
  font-weight: 300;
  position: relative;
}
.research-questions li::before {
  content: '→';
  position: absolute;
  left: 0.4rem;
  color: var(--gold);
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.85rem;
  top: 1.05rem;
}

.other-research {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--gold-line);
  border: 1px solid var(--gold-dim);
  margin-top: 1rem;
}
.other-research a {
  padding: 1.5rem 1.8rem;
  background: rgba(3,5,8,0.85);
  text-decoration: none;
  color: inherit;
  display: block;
  transition: background 0.2s;
}
.other-research a:hover { background: rgba(8,12,18,0.95); }
.other-research .num {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: rgba(201,168,76,0.45);
  margin-bottom: 0.4rem;
  display: block;
}
.other-research .title {
  font-family: 'EB Garamond', serif;
  font-size: 1.05rem;
  color: var(--text);
}

/* ── GROUP / MEMBERS PAGE ── */
.group-intro {
  margin-bottom: 3.5rem;
  padding: 2rem;
  border: 1px solid var(--gold-dim);
  background: rgba(0,0,0,0.4);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}
.group-intro h2 {
  font-family: 'EB Garamond', serif;
  font-size: 1.7rem;
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: 0.8rem;
}
.group-intro p {
  font-size: 0.92rem;
  color: var(--dim);
  line-height: 1.75;
  font-weight: 300;
}
.members-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1px;
  background: var(--gold-line);
  border: 1px solid var(--gold-dim);
  margin-top: 1.5rem;
}
.member {
  padding: 1.8rem 1.6rem;
  background: rgba(3,5,8,0.85);
  position: relative;
  transition: background 0.3s;
  display: flex; flex-direction: column;
  min-height: 220px;
}
.member:hover { background: rgba(8,12,18,0.95); }
.member-avatar {
  width: 56px; height: 56px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, rgba(201,168,76,0.18), transparent 70%),
    radial-gradient(circle at 70% 70%, rgba(240,165,0,0.08), transparent 60%);
  border: 1px solid var(--gold-dim);
  margin-bottom: 1.2rem;
  position: relative;
  overflow: hidden;
}
.member-avatar.has-photo {
  background-size: cover;
  background-position: center;
  border-color: var(--gold);
}
.member-role {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}
.member-name {
  font-family: 'EB Garamond', serif;
  font-size: 1.2rem;
  color: var(--text);
  margin-bottom: 0.5rem;
  line-height: 1.25;
}
.member-blurb {
  font-size: 0.82rem;
  color: var(--dim);
  line-height: 1.6;
  font-weight: 300;
  margin-top: auto;
}
.member-links {
  margin-top: 0.7rem;
  display: flex; gap: 0.8rem; flex-wrap: wrap;
}
.member-links a {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-dim);
  transition: border-color 0.2s;
}
.member-links a:hover { border-color: var(--gold); }

.member.open {
  background:
    repeating-linear-gradient(135deg, transparent, transparent 12px, rgba(201,168,76,0.04) 12px, rgba(201,168,76,0.04) 13px),
    rgba(3,5,8,0.85);
}
.member.open .member-avatar {
  border-style: dashed;
  border-color: rgba(201,168,76,0.45);
  background: transparent;
}
.member.open .member-avatar::after {
  content: '+';
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  color: var(--gold);
  font-family: 'EB Garamond', serif;
  font-size: 1.6rem;
}
.member.open .member-role { color: var(--amber); }

.join-cta {
  margin-top: 4rem;
  padding: 3rem;
  border: 1px solid var(--gold);
  background: rgba(3,5,8,0.6);
  text-align: center;
}
.join-cta h2 {
  font-family: 'EB Garamond', serif;
  font-size: 2rem;
  font-weight: 400;
  margin-bottom: 1rem;
}
.join-cta p {
  font-size: 0.95rem;
  color: var(--dim);
  line-height: 1.75;
  max-width: 640px;
  margin: 0 auto 1.8rem;
  font-weight: 300;
}
.join-cta a.cta {
  display: inline-block;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  text-decoration: none;
  border: 1px solid var(--gold);
  padding: 0.9rem 1.8rem;
  transition: background 0.2s;
}
.join-cta a.cta:hover { background: rgba(201,168,76,0.08); }

.collaborator {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 2rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--hairline);
}
.collaborator-name {
  font-family: 'EB Garamond', serif;
  font-size: 1.1rem;
  color: var(--text);
}
.collaborator-name .affiliation {
  display: block;
  font-size: 0.78rem;
  color: var(--dim);
  font-style: italic;
  margin-top: 0.2rem;
  font-family: 'Rajdhani', sans-serif;
}
.collaborator-topic {
  font-size: 0.88rem;
  color: var(--dim);
  line-height: 1.65;
  font-weight: 300;
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  header { padding: 2rem; flex-direction: column; gap: 1.5rem; }
  .hero {
    padding: 1rem 2rem 3rem;
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .hero-text { padding-top: 2rem; }
  .hero-image img { max-height: 70vh; margin: 0 auto; }
  .hero-image figcaption { text-align: left; }
  .reading-hero { padding: 4rem 2rem 2rem; }
  .reading-content { padding: 3rem 2rem; }
  .status-bar { margin: 2rem; flex-wrap: wrap; gap: 1.5rem; }
  .cards { grid-template-columns: 1fr; margin: 2rem; }
  .card { grid-column: span 1 !important; border-right: none; border-bottom: 1px solid var(--gold-line); }
  .card:last-child { border-bottom: none; }
  .about { grid-template-columns: 1fr; margin: 3rem 2rem; gap: 3rem; }
  .recent, .contact { margin: 3rem 2rem; }
  .contact { grid-template-columns: 1fr; gap: 1.5rem; }
  .contact-list { grid-template-columns: 1fr; }
  .recent-list li { grid-template-columns: 50px 1fr; }
  .recent-list .recent-year { display: none; }
  .cv-entry { grid-template-columns: 1fr; gap: 0.5rem; }
  .cv-talks li { grid-template-columns: 1fr; gap: 0.3rem; }
  .cv-awards li { grid-template-columns: 1fr; }
  .group-intro { grid-template-columns: 1fr; gap: 1.5rem; padding: 1.5rem; }
  .members-grid { grid-template-columns: 1fr; }
  .collaborator { grid-template-columns: 1fr; gap: 0.5rem; }
  .join-cta { padding: 2rem 1.5rem; margin-top: 3rem; }
  .other-research { grid-template-columns: 1fr; }
  footer { padding: 2rem; flex-direction: column; gap: 1rem; text-align: center; }
}
