/* === RESET & TOKENS === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:      #0c0c14;
  --bg2:     #111120;
  --bg3:     #18182a;
  --bg-nav:  rgba(12,12,20,0.88);

  --border:  rgba(255,255,255,0.08);
  --border2: rgba(255,255,255,0.15);

  /* Text hierarchy — not opacity soup, actual readable values */
  --text:    #ece8e0;
  --text2:   rgba(236,232,224,0.70);
  --text3:   rgba(236,232,224,0.42);

  --gold:      #c9a86c;
  --gold2:     #e2c07a;
  --gold-dim:  rgba(201,168,108,0.09);
  --teal:      #2dd4a0;
  --teal-dim:  rgba(45,212,160,0.09);

  --serif: 'Playfair Display', Georgia, serif;
  --sans:  'IBM Plex Sans', sans-serif;
  --mono:  'IBM Plex Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Noise texture */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px;
  opacity: 0.025;
}

/* Top ambient glow */
body::before {
  content: '';
  position: fixed;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 440px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(ellipse, rgba(201,168,108,0.05) 0%, transparent 68%);
}

.page {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 36px 120px;
}


/* ============================================================
   NAV — sticky with blur
   ============================================================ */
nav {
  position: sticky;
  top: 0;
  z-index: 200;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 36px;
  margin: 0 -36px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-nav);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  opacity: 0;
  animation: rise 0.6s 0.05s forwards;
}

.nav-logo {
  font-family: var(--serif);
  font-size: 16px;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.nav-logo span { color: var(--gold); }

.nav-links {
  display: flex;
  gap: 30px;
  list-style: none;
}
.nav-links a {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text3);
  text-decoration: none;
  transition: color 0.2s;
  font-family: var(--mono);
}
.nav-links a:hover { color: var(--text); }
.nav-links a.nav-photo {
  color: var(--gold);
  opacity: 0.75;
}
.nav-links a.nav-photo:hover { opacity: 1; }

@media (max-width: 640px) {
  .nav-links { gap: 18px; }
  .nav-links a { font-size: 11px; }
}


/* ============================================================
   HERO
   ============================================================ */
.hero {
  display: grid;
  grid-template-columns: 1fr 180px;
  gap: 56px;
  align-items: start;
  padding: 88px 0 80px;
  opacity: 0;
  animation: rise 0.7s 0.15s forwards;
}
@media (max-width: 700px) {
  .hero { grid-template-columns: 1fr; gap: 36px; padding: 60px 0 52px; }
}

.hero-name {
  font-family: var(--serif);
  font-size: clamp(40px, 6vw, 68px);
  font-weight: 400;
  line-height: 1.06;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.hero-name em { font-style: italic; color: var(--gold); }

.hero-roles {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 18px 0 28px;
}
.hero-role {
  font-size: 11px;
  padding: 5px 13px;
  border-radius: 3px;
  border: 1px solid var(--border2);
  color: var(--text2);
  font-family: var(--mono);
  letter-spacing: 0.04em;
}

.hero-bio {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text2);
  max-width: 540px;
  margin-bottom: 36px;
  font-weight: 300;
}
.hero-bio strong { color: var(--text); font-weight: 500; }

.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }

.cta-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gold);
  color: #0c0c14;
  padding: 12px 26px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  transition: background 0.2s, transform 0.15s;
  font-family: var(--sans);
}
.cta-primary:hover { background: var(--gold2); transform: translateY(-1px); }

.cta-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text2);
  padding: 12px 26px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 400;
  text-decoration: none;
  border: 1px solid var(--border2);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  transition: background 0.2s, color 0.2s;
  font-family: var(--sans);
}
.cta-ghost:hover { background: var(--bg3); color: var(--text); }


/* ============================================================
   STAT BLOCK
   ============================================================ */
.hero-stats {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.stat {
  padding: 20px 22px;
  border-bottom: 1px solid var(--border);
}
.stat:last-child { border-bottom: none; }
.stat-num {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 400;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 5px;
}
.stat-label {
  font-size: 11px;
  color: var(--text3);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  font-family: var(--mono);
}


/* ============================================================
   SECTION WRAPPER
   ============================================================ */
.section {
  margin-top: 88px;
  opacity: 0;
  animation: rise 0.7s forwards;
}
.section:nth-child(3) { animation-delay: 0.25s; }
.section:nth-child(4) { animation-delay: 0.33s; }
.section:nth-child(5) { animation-delay: 0.41s; }
.section:nth-child(6) { animation-delay: 0.49s; }
.section:nth-child(7) { animation-delay: 0.57s; }
.section:nth-child(8) { animation-delay: 0.65s; }

.section-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}
.divider-label {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text3);
  font-family: var(--mono);
  white-space: nowrap;
}
.divider-line { flex: 1; height: 1px; background: var(--border); }


/* ============================================================
   PAPER FILTERS
   ============================================================ */
.paper-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
  padding: 16px 20px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-sep {
  width: 1px;
  height: 24px;
  background: var(--border);
  flex-shrink: 0;
}

.filter-label {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text3);
  font-family: var(--mono);
  white-space: nowrap;
}

.filter-btn {
  font-size: 11px;
  padding: 6px 14px;
  border-radius: 4px;
  border: 1px solid var(--border2);
  background: transparent;
  color: var(--text2);
  cursor: pointer;
  transition: all 0.18s;
  font-family: var(--mono);
  letter-spacing: 0.04em;
}
.filter-btn:hover { border-color: var(--gold); color: var(--gold); }
.filter-btn.active {
  background: var(--gold);
  color: #0c0c14;
  border-color: var(--gold);
  font-weight: 500;
}

.paper-count {
  margin-left: auto;
  font-size: 11px;
  color: var(--text3);
  font-family: var(--mono);
  white-space: nowrap;
  flex-shrink: 0;
}
.paper-count span { color: var(--gold); }


/* ============================================================
   PAPERS LIST — display:none fixed, .show = display:grid
   ============================================================ */
.papers { display: flex; flex-direction: column; gap: 10px; }

/* Base state: hidden. JS adds .show to make visible. */
.paper {
  display: none;
  grid-template-columns: 56px 1fr;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg2);
  transition: border-color 0.2s, background 0.2s;
}
.paper.show { display: grid; }
.paper:hover { border-color: rgba(201,168,108,0.32); background: var(--bg3); }

.paper-year {
  background: rgba(201,168,108,0.04);
  border-right: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 24px;
}
.paper-year span {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--gold);
  letter-spacing: 0.07em;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);
}

.paper-body { padding: 22px 28px; }

.paper-title {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.5;
  font-style: italic;
}
.paper-meta {
  font-size: 12px;
  color: var(--text3);
  font-family: var(--mono);
  margin-bottom: 10px;
  line-height: 1.6;
}
.paper-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.paper-tag {
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 3px;
  background: rgba(255,255,255,0.03);
  color: var(--text3);
  border: 1px solid var(--border);
  font-family: var(--mono);
}
.paper-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--gold);
  text-decoration: none;
  font-family: var(--mono);
  margin-top: 12px;
  transition: color 0.2s;
}
.paper-link:hover { color: var(--gold2); }

.papers-empty {
  display: none;
  padding: 44px;
  text-align: center;
  color: var(--text3);
  font-family: var(--mono);
  font-size: 13px;
  border: 1px dashed var(--border);
  border-radius: 6px;
}
.papers-empty.show { display: block; }


/* ============================================================
   LIVE CALLOUT
   ============================================================ */
.live-callout {
  background: var(--bg2);
  border: 1px solid rgba(45,212,160,0.18);
  border-radius: 6px;
  padding: 22px 26px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 16px;
}
.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  animation: pulse 2s infinite;
  flex-shrink: 0;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.3} }
.live-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--teal);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 9px;
  flex-shrink: 0;
}
.live-desc {
  font-size: 14px;
  color: var(--text2);
  flex: 1;
  font-weight: 300;
  min-width: 200px;
}
.live-btn {
  font-family: var(--mono);
  font-size: 11px;
  padding: 9px 18px;
  border-radius: 4px;
  background: var(--teal-dim);
  color: var(--teal);
  text-decoration: none;
  border: 1px solid rgba(45,212,160,0.2);
  white-space: nowrap;
  transition: background 0.2s;
  flex-shrink: 0;
}
.live-btn:hover { background: rgba(45,212,160,0.17); }


/* ============================================================
   PROJECTS
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}

.proj-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.22s, transform 0.2s, background 0.2s;
  position: relative;
  overflow: hidden;
}
.proj-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201,168,108,0.22), transparent);
}
.proj-card:hover {
  border-color: rgba(201,168,108,0.28);
  transform: translateY(-2px);
  background: var(--bg3);
}

.proj-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}
.proj-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--gold);
  letter-spacing: 0.08em;
  padding: 4px 9px;
  border: 1px solid rgba(201,168,108,0.22);
  border-radius: 3px;
  flex-shrink: 0;
}

.badge {
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 3px;
  font-weight: 400;
  white-space: nowrap;
  font-family: var(--mono);
}
.badge-live {
  background: var(--teal-dim);
  color: var(--teal);
  border: 1px solid rgba(45,212,160,0.2);
  display: flex;
  align-items: center;
  gap: 5px;
}
.badge-key {
  background: var(--gold-dim);
  color: var(--gold);
  border: 1px solid rgba(201,168,108,0.18);
}
.badge-wip {
  background: rgba(255,255,255,0.03);
  color: var(--text3);
  border: 1px solid var(--border);
}

.proj-title {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 400;
  color: #fff;
  line-height: 1.3;
}
.proj-desc {
  font-size: 14px;
  color: var(--text2);
  line-height: 1.78;
  flex: 1;
  font-weight: 300;
}
.proj-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.proj-tag {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 3px;
  background: rgba(255,255,255,0.03);
  color: var(--text3);
  border: 1px solid var(--border);
  font-family: var(--mono);
}
.proj-hr { height: 1px; background: var(--border); }
.proj-note {
  font-size: 12px;
  color: var(--text3);
  font-style: italic;
  line-height: 1.5;
}
.proj-links { display: flex; gap: 7px; flex-wrap: wrap; }
.pbtn {
  font-size: 12px;
  padding: 7px 14px;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 400;
  text-decoration: none;
  border: none;
  transition: background 0.2s;
  font-family: var(--mono);
  letter-spacing: 0.04em;
}
.pbtn-gold { background: rgba(201,168,108,0.13); color: var(--gold); }
.pbtn-gold:hover { background: rgba(201,168,108,0.24); }
.pbtn-teal { background: var(--teal-dim); color: var(--teal); }
.pbtn-teal:hover { background: rgba(45,212,160,0.17); }
.pbtn-muted { background: rgba(255,255,255,0.04); color: var(--text3); }
.pbtn-muted:hover { background: rgba(255,255,255,0.08); color: var(--text2); }


/* ============================================================
   SKILLS
   ============================================================ */
.skills-wrap { display: flex; flex-wrap: wrap; gap: 7px; }
.skill {
  font-size: 12px;
  padding: 6px 14px;
  border-radius: 4px;
  border: 1px solid var(--border2);
  color: var(--text2);
  background: var(--bg2);
  transition: border-color 0.2s, color 0.2s;
  font-family: var(--mono);
  letter-spacing: 0.03em;
}
.skill:hover { border-color: rgba(201,168,108,0.38); color: var(--gold); }


/* ============================================================
   CREDENTIALS
   ============================================================ */
.cred-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 580px) { .cred-grid { grid-template-columns: 1fr; } }

.cred-box {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 24px;
}
.cred-label {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
  font-family: var(--mono);
}
.cred-box p {
  font-size: 14px;
  color: var(--text2);
  line-height: 1.8;
  font-weight: 300;
}
.cred-box ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.cred-box ul li {
  font-size: 14px;
  color: var(--text2);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.55;
}
.cred-box ul li::before {
  content: '—';
  color: var(--gold);
  font-family: var(--mono);
  font-size: 11px;
  flex-shrink: 0;
  margin-top: 3px;
}


/* ============================================================
   CONTACT
   ============================================================ */
.contact-wrap {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 52px 48px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
  position: relative;
  overflow: hidden;
}
@media (max-width: 620px) {
  .contact-wrap { grid-template-columns: 1fr; padding: 36px 26px; gap: 28px; }
}
.contact-wrap::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201,168,108,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.contact-title {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 400;
  color: #fff;
  margin-bottom: 10px;
}
.contact-sub {
  font-size: 14px;
  color: var(--text2);
  font-weight: 300;
  line-height: 1.8;
  max-width: 380px;
}
.contact-links { display: flex; flex-direction: column; gap: 9px; flex-shrink: 0; }
.clink {
  font-size: 12px;
  padding: 11px 22px;
  border-radius: 4px;
  border: 1px solid var(--border2);
  color: var(--text2);
  text-decoration: none;
  background: transparent;
  transition: all 0.2s;
  text-align: center;
  font-family: var(--mono);
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.clink:hover { background: var(--bg3); color: var(--text); }
.clink.primary { background: var(--gold); color: #0c0c14; border-color: var(--gold); }
.clink.primary:hover { background: var(--gold2); }


/* ============================================================
   FOOTER
   ============================================================ */
footer {
  margin-top: 80px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
footer p { font-size: 12px; color: var(--text3); font-family: var(--mono); }


/* ============================================================
   ANIMATIONS & RESPONSIVE
   ============================================================ */
@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 580px) {
  .page { padding: 0 20px 80px; }
  nav { margin: 0 -20px; padding-left: 20px; padding-right: 20px; }
  .proj-card { padding: 20px; }
  .paper-body { padding: 18px 20px; }
}