:root {
  --ink: #0a0a0f; --cream: #f5f0e8; --gold: #c9a84c;
  --gold-light: #e8c97a; --teal: #1a6b6b; --teal-light: #2a9090;
  --border: rgba(201,168,76,0.25);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'DM Sans', sans-serif; background: var(--ink); color: var(--cream); }
nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; display: flex; justify-content: space-between; align-items: center; padding: 1.2rem 4rem; background: rgba(10,10,15,0.85); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.nav-logo { font-family:  sans-serif; font-weight: 800; font-size: 1.1rem; color: var(--gold); text-decoration: none; }
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a { color: var(--cream); opacity: 0.75; font-size: 0.9rem; text-decoration: none; font-weight: 400; transition: opacity 0.2s, color 0.2s; }
.nav-links a:hover, .nav-links a.active { opacity: 1; color: var(--gold); }
.nav-cta { background: var(--gold); color: var(--ink) !important; padding: 0.55rem 1.4rem; border-radius: 2px; font-weight: 500; opacity: 1 !important; }

.page-hero {
  padding: 10rem 4rem 5rem;
  background: radial-gradient(ellipse at 60% 0%, rgba(26,107,107,0.15) 0%, transparent 60%), linear-gradient(180deg, rgba(201,168,76,0.05) 0%, transparent 100%);
  border-bottom: 1px solid var(--border); text-align: center;
}
.page-tag { display: inline-block; font-size: 0.75rem; letter-spacing: 0.25em; text-transform: uppercase; color: var(--gold); border: 1px solid var(--border); padding: 0.4rem 1rem; border-radius: 20px; margin-bottom: 1.5rem; }
.page-title { font-family:  sans-serif; font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 800; color: var(--cream); margin-bottom: 1.5rem; line-height: 1.1; }
.page-title span { color: var(--gold); }
.page-desc { font-size: 1.1rem; color: rgba(245,240,232,0.65); line-height: 1.8; max-width: 640px; margin: 0 auto; }

section { padding: 5rem 4rem; }
.section-inner { max-width: 1100px; margin: auto; }
.section-tag { display: inline-block; font-size: 0.75rem; letter-spacing: 0.25em; text-transform: uppercase; color: var(--gold); border: 1px solid var(--border); padding: 0.4rem 1rem; border-radius: 20px; margin-bottom: 1.5rem; }
.section-title { font-family:  sans-serif; font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: 800; color: var(--cream); line-height: 1.2; margin-bottom: 1rem; }
.section-sub { font-size: 1rem; color: rgba(245,240,232,0.6); max-width: 580px; line-height: 1.75; margin-bottom: 2.5rem; }

/* INTEREST AREAS */
#interests { border-bottom: 1px solid var(--border); }
.interests-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.interest-card {
  background: rgba(245,240,232,0.03); border: 1px solid var(--border);
  border-radius: 8px; padding: 2.5rem 2rem;
  transition: all 0.3s;
}
.interest-card:hover { background: rgba(201,168,76,0.07); border-color: rgba(201,168,76,0.4); transform: translateY(-4px); }
.interest-icon { font-size: 2rem; margin-bottom: 1.25rem; }
.interest-title { font-family:  sans-serif; font-size: 1.05rem; font-weight: 700; color: var(--cream); margin-bottom: 0.75rem; }
.interest-desc { font-size: 0.9rem; color: rgba(245,240,232,0.6); line-height: 1.7; }
.interest-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.25rem; }
.int-tag { font-size: 0.75rem; color: var(--gold); background: rgba(201,168,76,0.1); border: 1px solid rgba(201,168,76,0.2); padding: 0.25rem 0.65rem; border-radius: 20px; }

/* PHDINPROGRESS */
#phd { background: rgba(245,240,232,0.02); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.phd-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.phd-info p { font-size: 1.05rem; color: rgba(245,240,232,0.75); line-height: 1.85; margin-bottom: 1.25rem; }
.phd-info p strong { color: var(--gold); }
.phd-sidebar { display: flex; flex-direction: column; gap: 1rem; }
.phd-stat {
  padding: 1.5rem; background: rgba(245,240,232,0.03); border: 1px solid var(--border);
  border-radius: 6px; display: flex; gap: 1.5rem; align-items: center;
}
.phd-stat-icon { font-size: 1.5rem; }
.phd-stat-label { font-size: 0.75rem; color: rgba(245,240,232,0.45); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.25rem; }
.phd-stat-val { font-family:  sans-serif; font-size: 1rem; font-weight: 700; color: var(--cream); }

/* INNOVATIONS DETAIL */
#innovations { border-top: 1px solid var(--border); }
.innovations-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.innov-card {
  background: rgba(245,240,232,0.03); border: 1px solid var(--border);
  border-radius: 8px; padding: 2rem; position: relative; overflow: hidden;
  transition: all 0.3s;
}
.innov-card:hover { background: rgba(26,107,107,0.08); border-color: var(--teal-light); transform: translateY(-3px); }
.innov-card::after { content: ''; position: absolute; top: 0; right: 0; width: 80px; height: 80px; background: radial-gradient(circle, rgba(201,168,76,0.08) 0%, transparent 70%); }
.innov-num { font-family:  sans-serif; font-size: 3rem; font-weight: 800; color: rgba(201,168,76,0.15); line-height: 1; margin-bottom: 0.5rem; }
.innov-title { font-family:  sans-serif; font-size: 1.1rem; font-weight: 700; color: var(--gold); margin-bottom: 0.5rem; }
.innov-subtitle { font-size: 0.85rem; color: rgba(245,240,232,0.55); margin-bottom: 1rem; }
.innov-desc { font-size: 0.9rem; color: rgba(245,240,232,0.7); line-height: 1.7; }
.innov-link { display: inline-block; margin-top: 1rem; font-size: 0.82rem; color: var(--teal-light); text-decoration: none; font-weight: 500; transition: color 0.2s; }
.innov-link:hover { color: var(--gold); }

/* COLLAB CTA */
#collab { background: linear-gradient(135deg, rgba(201,168,76,0.06) 0%, rgba(26,107,107,0.1) 100%); border-top: 1px solid var(--border); text-align: center; }
.collab-inner { max-width: 700px; margin: auto; }
.collab-title { font-family:  sans-serif; font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; color: var(--cream); margin-bottom: 1.25rem; }
.collab-title span { color: var(--gold); }
.collab-desc { font-size: 1.05rem; color: rgba(245,240,232,0.65); line-height: 1.8; margin-bottom: 2.5rem; }
.btn-primary { background: var(--gold); color: var(--ink); padding: 0.85rem 2rem; border-radius: 2px; font-family:  sans-serif; font-weight: 700; font-size: 0.95rem; text-decoration: none; display: inline-block; transition: background 0.2s, transform 0.2s; }
.btn-primary:hover { background: var(--gold-light); transform: translateY(-2px); }

footer { background: rgba(245,240,232,0.03); border-top: 1px solid var(--border); padding: 3rem 4rem; }
.footer-inner { max-width: 1100px; margin: auto; display: flex; justify-content: space-between; align-items: center; }
.footer-logo { font-family:  sans-serif; font-weight: 800; color: var(--gold); font-size: 1rem; }
.footer-links { display: flex; gap: 2rem; }
.footer-links a { color: rgba(245,240,232,0.5); font-size: 0.9rem; text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: var(--gold); }
.footer-copy { color: rgba(245,240,232,0.35); font-size: 0.85rem; }

@media (max-width: 900px) {
  nav { padding: 1rem 1.5rem; } .nav-links { display: none; }
  .page-hero { padding: 8rem 1.5rem 3rem; }
  .interests-grid, .innovations-grid { grid-template-columns: 1fr; }
  .phd-grid { grid-template-columns: 1fr; }
  section { padding: 3rem 1.5rem; }
  footer { padding: 2rem 1.5rem; }
  .footer-inner { flex-direction: column; gap: 1rem; text-align: center; }
}