/* ─── TOKENS ─────────────────────────────────────────────── */
:root {
  --black:       #0a0a0a;
  --black-soft:  #111111;
  --black-mid:   #1a1a1a;
  --gold:        #c9a84c;
  --gold-light:  #e2c97e;
  --gold-faint:  rgba(201,168,76,0.10);
  --gold-border: rgba(201,168,76,0.25);
  --white:       #f5f0e8;
  --white-dim:   rgba(245,240,232,0.65);
  --white-faint: rgba(245,240,232,0.08);
  --serif:       'Cormorant Garamond', Georgia, serif;
  --sans:        'Montserrat', sans-serif;
  --nav-h:       72px;
}

/* ─── RESET ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--black);
  color: var(--white);
  font-family: var(--sans);
  font-weight: 300;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--gold); text-decoration: none; }
a:hover { color: var(--gold-light); }
img { display: block; max-width: 100%; }

/* ═══════════════════════════════════════════════════════════
   SHARED NAV — three-zone: [social+icons] [name] [hamburger]
   ═══════════════════════════════════════════════════════════ */
nav.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: var(--nav-h);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 2.5rem;
  background: rgba(10,10,10,0.95);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--gold-border);
}

/* Left zone: social icons */
.nav-left {
  display: flex; align-items: center; gap: 1rem;
}
.nav-social-link {
  color: var(--white-dim);
  display: flex; align-items: center;
  transition: color 0.2s, transform 0.2s;
}
.nav-social-link:hover { color: var(--gold); transform: translateY(-1px); }

/* Center zone: name */
.nav-center {
  text-align: center;
}
.nav-name {
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--gold);
  white-space: nowrap;
}
.nav-name a { color: var(--gold); }
.nav-name a:hover { color: var(--gold-light); }

/* Right zone: hamburger + dropdown */
.nav-right {
  display: flex; justify-content: flex-end; align-items: center;
  position: relative;
}
.hamburger {
  background: none; border: 1px solid var(--gold-border);
  padding: 0.5rem 0.8rem; cursor: pointer;
  display: flex; flex-direction: column; gap: 5px;
  transition: border-color 0.2s;
}
.hamburger:hover { border-color: var(--gold); }
.hamburger span {
  display: block; width: 22px; height: 1.5px;
  background: var(--white-dim);
  transition: background 0.2s;
}
.hamburger:hover span { background: var(--gold); }

/* Dropdown menu */
.nav-dropdown {
  display: none;
  position: absolute; top: calc(100% + 12px); right: 0;
  min-width: 200px;
  background: rgba(10,10,10,0.98);
  border: 1px solid var(--gold-border);
  backdrop-filter: blur(12px);
  flex-direction: column;
  z-index: 300;
}
.nav-dropdown.open { display: flex; }
.nav-dropdown a {
  padding: 0.85rem 1.6rem;
  font-size: 0.68rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--white-dim);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: color 0.15s, background 0.15s;
}
.nav-dropdown a:last-child { border-bottom: none; }
.nav-dropdown a:hover, .nav-dropdown a.active {
  color: var(--gold);
  background: var(--gold-faint);
}

/* ─── PAGE WRAPPER ───────────────────────────────────────── */
.page { padding-top: var(--nav-h); }

/* ─── SECTION STRUCTURE ──────────────────────────────────── */
.inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5rem 4rem;
}
.section-label {
  font-size: 0.62rem; letter-spacing: 0.24em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 0.8rem;
  display: flex; align-items: center; gap: 0.8rem;
}
.section-label::before {
  content: ''; display: block;
  width: 20px; height: 1px; background: var(--gold);
}
.section-title {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 4vw, 3.4rem);
  font-weight: 300; line-height: 1.15;
  color: var(--white); margin-bottom: 0.8rem;
}
.section-sub {
  font-size: 0.9rem; color: var(--white-dim);
  max-width: 560px; line-height: 1.85; margin-bottom: 3.5rem;
}
.divider-gold {
  width: 100%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-border), transparent);
}

/* ─── BUTTONS ────────────────────────────────────────────── */
.btn-primary {
  background: var(--gold); color: var(--black);
  padding: 0.85rem 2.2rem; font-family: var(--sans);
  font-size: 0.68rem; font-weight: 600; letter-spacing: 0.18em;
  text-transform: uppercase; transition: background 0.2s, transform 0.2s;
  display: inline-block;
}
.btn-primary:hover { background: var(--gold-light); transform: translateY(-1px); color: var(--black); }
.btn-ghost {
  border: 1px solid var(--gold-border); color: var(--white-dim);
  padding: 0.85rem 2.2rem; font-family: var(--sans);
  font-size: 0.68rem; font-weight: 500; letter-spacing: 0.18em;
  text-transform: uppercase; transition: border-color 0.2s, color 0.2s;
  display: inline-block;
}
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }

/* ─── ABPS NOTICE ────────────────────────────────────────── */
.abps-notice {
  display: inline-block; border: 1px solid var(--gold-border);
  background: var(--gold-faint); padding: 0.9rem 1.4rem;
  font-size: 0.72rem; line-height: 1.65; color: var(--white-dim);
  letter-spacing: 0.03em; max-width: 580px; margin-bottom: 2.5rem;
}
.abps-notice strong { color: var(--gold); font-weight: 500; }

/* ─── FOOTER ─────────────────────────────────────────────── */
footer {
  text-align: center; padding: 2rem 4rem;
  border-top: 1px solid var(--gold-border);
  font-size: 0.68rem; color: var(--white-dim);
  letter-spacing: 0.07em; background: var(--black);
}
footer .footer-name {
  font-family: var(--serif); font-size: 1rem;
  color: var(--gold); margin-bottom: 0.3rem;
}
footer .footer-disclaimer { margin-top: 0.6rem; font-size: 0.6rem; opacity: 0.55; }

/* ─── SHARED CARD STYLES ─────────────────────────────────── */
.pub-item {
  padding: 1.4rem 1.6rem;
  border-left: 2px solid var(--gold-border);
  background: var(--white-faint);
  transition: border-color 0.2s; margin-bottom: 1px;
}
.pub-item:hover { border-left-color: var(--gold); }
.pub-item p { font-size: 0.83rem; color: var(--white-dim); line-height: 1.75; }
.pub-item .journal { font-style: italic; color: var(--gold); }

/* ─── MOBILE ─────────────────────────────────────────────── */
@media (max-width: 700px) {
  nav.site-nav { padding: 0 1.2rem; }
  .nav-name { font-size: 1.1rem; }
  .inner { padding: 3rem 1.5rem; }
}