:root {
  --ink: #1A1F1C;
  --parchment: #F1EADA;
  --pine: #1F3A2E;
  --pine-deep: #142720;
  --ochre: #B8722E;
  --slate: #3D5A6C;
  --line: rgba(26, 31, 28, 0.14);
  --paper: #FBF8F1;
  --muted: #4b524c;
  --hero-purple: #3D1A6B;

  --font-display: "Newsreader", Georgia, serif;
  --font-body: "Public Sans", -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--parchment);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.55;
}

a { color: var(--pine); }
a:focus-visible, button:focus-visible, select:focus-visible {
  outline: 2px solid var(--ochre);
  outline-offset: 2px;
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Nav ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(241, 234, 218, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 12px;
  padding-bottom: 12px;
}
.site-nav .brand {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--pine);
  text-decoration: none;
  white-space: nowrap;
}
.nav-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 14px;
}
.nav-links a {
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1px solid transparent;
}
.nav-links a:hover { border-bottom-color: var(--ochre); }

/* ---------- Hero ---------- */
.hero {
  background: var(--hero-purple);
  color: var(--parchment);
  padding: 64px 0 40px;
  position: relative;
  overflow: hidden;
}
.hero .wrap { position: relative; z-index: 2; }
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #CFE0D2;
  margin: 0 0 10px;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(38px, 6vw, 64px);
  line-height: 1.05;
  margin: 0 0 18px;
}
.hero h1 em { font-style: italic; color: #E7B98C; }
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: #E7E2D3;
  margin-bottom: 6px;
}
.hero-meta strong { color: #fff; font-weight: 600; }
.hero-tag {
  margin-top: 20px;
  max-width: 52ch;
  color: #DCE6DC;
  font-size: 16px;
}

/* mountain ridge signature — recurring divider motif for Rhodope silhouette */
.ridge {
  display: block;
  width: 100%;
  height: 48px;
  color: var(--parchment);
}
.ridge-hero {
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 60px;
  color: var(--parchment);
  z-index: 1;
}

/* ---------- Sections ---------- */
section { padding: 52px 0; }
section + section { border-top: none; }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 28px;
}
.section-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ochre);
}
h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 30px;
  margin: 0;
  color: var(--pine-deep);
}
.section-intro {
  color: var(--muted);
  max-width: 60ch;
  margin: -14px 0 28px;
}

/* ---------- Schedule ---------- */
.day-block { margin-bottom: 30px; }
.day-label {
  font-family: var(--font-mono);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--slate);
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
  margin-bottom: 12px;
}
.event-row {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
}
.event-row:last-child { border-bottom: none; }
.event-row--break {
  opacity: 0.65;
  font-style: italic;
}
.event-row--break .event-time { color: var(--slate); }
.event-time {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ochre);
  padding-top: 2px;
}
.event-title { font-weight: 600; margin: 0 0 2px; }
.event-speaker { font-size: 14px; color: var(--muted); margin: 0; }
.event-type {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  color: var(--slate);
  margin-top: 4px;
}
.event-toggle {
  display: block;
  margin-top: 8px;
  padding: 0;
  border: none;
  background: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ochre);
  cursor: pointer;
}
.event-toggle:hover { text-decoration: underline; }
.event-description {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--muted);
  border-left: 2px solid var(--line);
  padding-left: 12px;
}
.event-description a {
  color: var(--ochre);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}
.event-description a:hover { opacity: 0.8; }

/* ---------- Speakers ---------- */
.speaker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.speaker-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 18px;
}
.speaker-card h3 {
  font-family: var(--font-display);
  font-size: 19px;
  margin: 0 0 6px;
  color: var(--pine-deep);
}
.speaker-role { font-size: 13px; color: var(--slate); margin: 0 0 10px; }
.speaker-bio { font-size: 14px; margin: 0; }
.speaker-program {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  color: var(--ochre);
  margin: 8px 0 0;
}

/* ---------- Venue ---------- */
.venue-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 640px) {
  .venue-layout { grid-template-columns: 1fr 1fr; }
}
.venue-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 20px;
}
.venue-card h3 { font-family: var(--font-display); margin-top: 0; }
.venue-map iframe {
  width: 100%;
  height: 260px;
  border: 1px solid var(--line);
  border-radius: 6px;
}

/* ---------- Partners ---------- */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
}
.partner-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.partner-card img {
  max-height: 40px;
  max-width: 100%;
  object-fit: contain;
  margin-bottom: 6px;
}
.partner-card h3 {
  font-family: var(--font-display);
  font-size: 16px;
  margin: 0;
}
.partner-type {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  color: var(--ochre);
  margin: 0;
}
.partner-card p.partner-notes { font-size: 13px; color: var(--muted); margin: 4px 0 0; }

/* ---------- Guide cards (things to do / stay / eat) ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.info-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 16px;
}
.info-card h3 {
  font-family: var(--font-display);
  font-size: 17px;
  margin: 0 0 6px;
}
.info-card p { font-size: 14px; margin: 0 0 6px; color: var(--muted); }
.info-card p a {
  color: var(--ochre);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}
.info-card p a:hover { opacity: 0.8; }
.info-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ochre);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.info-links {
  display: flex;
  gap: 14px;
  margin-top: 10px;
}
.info-links a {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--pine);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}
.info-links a:hover { opacity: 0.75; }
.badge-partner {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  background: var(--pine);
  color: var(--parchment);
  padding: 2px 6px;
  border-radius: 3px;
  margin-left: 6px;
}
.badge-pending {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  background: var(--slate);
  color: var(--parchment);
  padding: 2px 6px;
  border-radius: 3px;
  margin-left: 6px;
}

/* ---------- Archive ---------- */
.archive-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.archive-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 12px 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 14px;
}
.archive-item {
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.archive-item:hover { border-color: var(--ochre); }
.archive-item:focus-visible { outline: 2px solid var(--ochre); outline-offset: 2px; }
.archive-item--active {
  background: var(--pine);
  border-color: var(--pine);
  color: var(--parchment);
}
.archive-empty {
  font-size: 14px;
  color: var(--muted);
  font-style: italic;
}

/* ---------- Edition switch banner ---------- */
.edition-banner {
  background: var(--ochre);
  color: #fff;
}
.edition-banner .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 10px;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
}
.edition-banner button {
  font-family: var(--font-mono);
  font-size: 12px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #fff;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
}
.edition-banner button:hover { background: rgba(255, 255, 255, 0.28); }
.edition-banner button:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }

/* ---------- Footer ---------- */
footer {
  background: var(--pine-deep);
  color: #CFE0D2;
  padding: 32px 0;
  font-family: var(--font-mono);
  font-size: 13px;
}
footer a { color: #E7B98C; }

.empty-state {
  font-size: 14px;
  color: var(--muted);
  font-style: italic;
}