@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;0,700;1,300;1,400;1,500;1,600;1,700&display=swap');

:root {
  --green: #1c3829;
  --gold: #c9a24e;
  --cream: #c8bca2;
  --cream-dim: #a09880;
  --cream-faint: #908872;
  --white: #ffffff;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--green);
  color: var(--cream);
  font-family: 'Cormorant Garamond', Garamond, serif;
  font-size: 1.25rem;
  line-height: 1.55;
}

a { color: var(--gold); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

.container { max-width: 1000px; margin: 0 auto; padding: 0 1.5rem; }
.narrow { max-width: 800px; }

/* ── Shared elements ── */

.sec-label {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
}

.divider {
  width: 100%;
  height: 1px;
  background: var(--gold);
  opacity: 0.35;
  border: none;
}

/* ── Header / nav ── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--green);
  border-bottom: 1px solid rgba(201, 162, 78, 0.35);
}

body.home .site-header {
  position: fixed;
  left: 0;
  right: 0;
  background:
    linear-gradient(to bottom, rgba(10, 22, 15, 0.78), rgba(10, 22, 15, 0.58)),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.05'/></svg>");
  backdrop-filter: blur(10px) saturate(120%);
  -webkit-backdrop-filter: blur(10px) saturate(120%);
  border-bottom: 1px solid rgba(201, 162, 78, 0.25);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.brand {
  color: var(--white);
  font-weight: 600;
  font-size: 1.5rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
}
.brand:hover { text-decoration: none; color: var(--gold); }

.brand-rule {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--gold);
  opacity: 0.6;
}

.site-nav { display: flex; gap: 1.8rem; }

.site-nav a {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cream);
}
.site-nav a:hover { color: var(--gold); text-decoration: none; }
.site-nav a[aria-current="page"] { color: var(--gold); }

.nav-toggle {
  display: none;
  width: 2.2rem;
  height: 2.2rem;
  padding: 0;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: none;
  border: 1px solid rgba(201, 162, 78, 0.5);
  border-radius: 4px;
  cursor: pointer;
}

.nav-toggle .bar {
  display: block;
  width: 1.1rem;
  height: 2px;
  background: var(--gold);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle.open .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open .bar:nth-child(2) { opacity: 0; }
.nav-toggle.open .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 720px) {
  .brand { font-size: 1.05rem; letter-spacing: 0.06em; }
  .nav-toggle { display: flex; flex-direction: column; }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--green);
    border-top: 1px solid rgba(201, 162, 78, 0.35);
    border-bottom: 1px solid rgba(201, 162, 78, 0.35);
    padding: 0.5rem 0;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 0.8rem 1.5rem; }
}

/* ── Hero (homepage) ── */

.hero {
  position: relative;
  height: 78vh;
  min-height: 520px;
  overflow: hidden;
}

.hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 12%;
  display: block;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(28, 56, 41, 0.30) 0%,
    rgba(28, 56, 41, 0.10) 35%,
    rgba(28, 56, 41, 0.72) 75%,
    var(--green) 100%
  );
}

.hero-titles {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2.5rem;
  z-index: 2;
  text-align: center;
  padding: 0 1.5rem;
}

.hero-titles h1 {
  font-weight: 500;
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 1.08;
  color: var(--white);
  letter-spacing: -0.01em;
}

.hero-titles .subtitle {
  font-weight: 400;
  font-style: italic;
  font-size: clamp(1.4rem, 3.2vw, 2.2rem);
  color: var(--gold);
  margin-top: 0.6rem;
  letter-spacing: 0.02em;
}

.hero-meta { text-align: center; padding: 1.2rem 1.5rem 0; }

.hero-meta .date {
  font-weight: 600;
  font-size: 1.35rem;
  color: var(--gold);
  letter-spacing: 0.04em;
}

.hero-meta .venue {
  font-weight: 400;
  font-style: italic;
  font-size: 1.15rem;
  color: var(--cream);
  margin-top: 0.3rem;
}
.hero-meta .venue a { color: var(--cream); }
.hero-meta .venue a:hover { color: var(--gold); }

.hero-meta .org-by {
  font-weight: 400;
  font-style: italic;
  font-size: 1.05rem;
  color: var(--cream-dim);
  margin-top: 0.5rem;
}

/* ── Page sections ── */

.section {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 3.2rem 0;
}

.section .sec-label { margin-bottom: 1rem; }

.section .body-text {
  max-width: 44em;
  color: var(--cream);
  line-height: 1.6;
}

.keynote-name {
  font-weight: 600;
  font-size: 2rem;
  color: var(--white);
  margin-bottom: 0.4rem;
}

.keynote-affil {
  font-weight: 400;
  font-style: italic;
  font-size: 1.15rem;
  color: var(--cream);
}

.cta-email {
  font-weight: 600;
  font-size: 1.6rem;
  margin-top: 0.8rem;
  display: inline-block;
}

.cta-note {
  font-size: 1rem;
  color: var(--cream-dim);
  margin-top: 0.8rem;
}

/* ── Inner-page title block ── */

.page-title {
  text-align: center;
  padding: 3.5rem 1.5rem 2.5rem;
}

.page-title .sec-label { display: block; margin-bottom: 0.9rem; }

.page-title h1 {
  font-weight: 500;
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--white);
  line-height: 1.1;
}

.page-title .page-sub {
  font-style: italic;
  color: var(--cream-dim);
  font-size: 1.1rem;
  margin-top: 0.9rem;
}

/* ── Programme ── */

.prog-row {
  display: grid;
  grid-template-columns: 10rem 1fr;
  gap: 1.6rem;
  padding: 1.5rem 0;
}

.prog-row .time {
  color: var(--gold);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: 0.03em;
}

.prog-row .what { color: var(--cream); }

.prog-row .what .item-title {
  color: var(--white);
  font-weight: 600;
  font-size: 1.3rem;
}

.prog-row .what .item-note {
  font-style: italic;
  color: var(--cream-dim);
  font-size: 1.05rem;
  margin-top: 0.2rem;
}

.panel-papers { margin-top: 1rem; }

.panel-papers .paper { margin-bottom: 1.1rem; }
.panel-papers .paper:last-child { margin-bottom: 0; }

.paper .speaker {
  color: var(--gold);
  font-style: italic;
  font-size: 1.1rem;
}

.paper .ptitle { color: var(--cream); }

.followed-by {
  font-style: italic;
  color: var(--cream-faint);
  font-size: 1rem;
  margin-top: 1rem;
}

@media (max-width: 640px) {
  .prog-row { grid-template-columns: 1fr; gap: 0.4rem; }
}

/* ── Abstracts ── */

.panel-heading {
  text-align: center;
  padding: 3.2rem 0 1rem;
}

.panel-heading .sec-label { display: block; margin-bottom: 0.6rem; }

.panel-heading h2 {
  font-weight: 500;
  font-size: 1.9rem;
  color: var(--white);
  line-height: 1.15;
}

.paper-entry { padding: 2.4rem 0; }

.paper-entry h3 {
  font-weight: 600;
  font-size: 1.55rem;
  line-height: 1.25;
  color: var(--white);
}

.paper-entry .speaker-line {
  color: var(--gold);
  font-style: italic;
  font-size: 1.15rem;
  margin: 0.5rem 0 1.2rem;
}

.paper-entry p { margin-bottom: 1rem; }
.paper-entry p:last-child { margin-bottom: 0; }

.bio-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 1.4rem 0 0.6rem;
}

.paper-entry .bio { color: var(--cream-dim); font-size: 1.15rem; }

/* ── Venue ── */

.venue-photo {
  margin: 2rem 0;
  text-align: center;
}

.venue-photo img {
  width: 100%;
  max-height: 560px;
  object-fit: cover;
  object-position: center 60%;
  border: 1px solid rgba(201, 162, 78, 0.5);
  display: block;
}

.venue-photo figcaption {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--cream-faint);
  font-style: italic;
}

.address-block {
  text-align: center;
  padding: 1rem 0 0;
}

.address-block .venue-name {
  font-weight: 600;
  font-size: 1.8rem;
  color: var(--white);
}

.address-block .venue-address {
  font-style: italic;
  color: var(--cream);
  font-size: 1.2rem;
  margin-top: 0.3rem;
}

.venue-map {
  width: 100%;
  height: 340px;
  margin-top: 0.5rem;
  border: 1px solid rgba(201, 162, 78, 0.5);
}

.big-link {
  display: inline-block;
  margin-top: 1rem;
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--gold);
  border: 1px solid rgba(201, 162, 78, 0.5);
  padding: 0.6rem 1.6rem;
}
.big-link:hover { text-decoration: none; background: rgba(201, 162, 78, 0.12); }

/* ── Footer ── */

.site-footer {
  margin-top: 3rem;
  text-align: center;
  padding: 2.8rem 1.5rem 3.2rem;
}

.site-footer img {
  height: 56px;
  filter: brightness(0) invert(1);
  display: block;
  margin: 0 auto 1.1rem;
}

.site-footer .org {
  font-weight: 400;
  font-style: italic;
  font-size: 1.05rem;
  color: var(--gold);
}

.site-footer .footer-links {
  margin-top: 0.8rem;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.site-footer .footer-links a { color: var(--cream-dim); margin: 0 0.7rem; }
.site-footer .footer-links a:hover { color: var(--gold); }