/* Rio Congo Panama — travel journal theme */
:root {
  --paper: #faf6ee;
  --paper-2: #f3ecdc;
  --ink: #2b251c;
  --muted: #857763;
  --green: #33523b;
  --green-deep: #243b2a;
  --copper: #b06a2c;
  --line: #e2d8c2;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.08rem;
  line-height: 1.78;
}

/* ---------- header ---------- */
.site {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 246, 238, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}
.bar {
  max-width: 1100px; margin: 0 auto; padding: 0.55rem 1rem;
  display: flex; align-items: center; gap: 1rem;
}
.brand {
  font-family: var(--sans); font-weight: 700; font-size: 0.95rem;
  color: var(--green-deep); text-decoration: none; white-space: nowrap;
  letter-spacing: 0.02em;
}
.topnav {
  display: flex; gap: 0.15rem; overflow-x: auto; scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.topnav::-webkit-scrollbar { display: none; }
.topnav a {
  font-family: var(--sans); font-size: 0.8rem; color: var(--muted);
  text-decoration: none; padding: 0.35rem 0.55rem; border-radius: 999px;
  white-space: nowrap;
}
.topnav a:hover { color: var(--green-deep); background: var(--paper-2); }
.topnav a.active { color: #fff; background: var(--green); }

/* ---------- layout ---------- */
.wrap { max-width: 720px; margin: 0 auto; padding: 0 1.25rem; }
main { padding: 2.5rem 0 1rem; }

.kicker {
  font-family: var(--sans); font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--copper);
  margin: 0 0 0.6rem;
}
.kicker.light { color: #e8d9b8; }

h1 {
  font-size: 2.35rem; line-height: 1.15; margin: 0 0 1.6rem;
  color: var(--green-deep); font-weight: 700;
}
h2.section {
  font-family: var(--sans); font-size: 1.02rem; font-weight: 700;
  color: var(--green); margin: 2.6rem 0 1rem;
  padding-top: 1.4rem; border-top: 2px solid var(--line);
  letter-spacing: 0.01em;
}
p { margin: 0 0 1.35rem; }
p.dropcap::first-letter {
  float: left; font-size: 3.6em; line-height: 0.88;
  padding: 0.06em 0.12em 0 0; color: var(--green); font-weight: 700;
}
a { color: var(--green); }
a:hover { color: var(--copper); }

/* ---------- hero ---------- */
.hero {
  background:
    linear-gradient(rgba(20, 28, 20, 0.55), rgba(20, 28, 20, 0.72)),
    url('https://www.riocongopanama.com/images/00000020.jpg') center 38% / cover no-repeat, var(--green-deep);
  color: #f7f1e2; padding: 5.5rem 0 4.5rem;
}
.hero h1 { color: #fff; font-size: clamp(2.4rem, 7vw, 4rem); margin: 0 0 1rem; }
.hero .sub { font-size: 1.2rem; line-height: 1.6; max-width: 34rem; margin: 0; color: #efe6d0; }

/* ---------- figures ---------- */
figure { margin: 2.2rem 0; }
figure img {
  width: 100%; height: auto; display: block; border-radius: 8px;
  box-shadow: 0 10px 30px rgba(43, 37, 28, 0.16);
  background: var(--paper-2);
}
figcaption {
  font-family: var(--sans); font-size: 0.85rem; color: var(--muted);
  text-align: center; margin-top: 0.6rem; line-height: 1.5;
}
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin: 2rem 0; }
.duo figure { margin: 0; }
@media (max-width: 560px) { .duo { grid-template-columns: 1fr; } }

/* ---------- gallery pages (history, maps) ---------- */
.gallery-page figure { break-inside: avoid; }
@media (min-width: 640px) {
  .gallery-page { max-width: 1000px; }
  .gallery-page h1, .gallery-page .kicker, .gallery-page h2.section,
  .gallery-page > p { max-width: 720px; margin-left: auto; margin-right: auto; }
  .gallery-page { column-count: 2; column-gap: 1.5rem; }
  .gallery-page h1, .gallery-page .kicker { column-span: all; }
  .gallery-page h2.section, .gallery-page > p { column-span: all; }
  .gallery-page .prevnext { column-span: all; }
}

/* ---------- note box / pull quote ---------- */
.note-box {
  background: var(--paper-2); border: 1px solid var(--line);
  border-left: 4px solid var(--copper); border-radius: 0 8px 8px 0;
  padding: 1.2rem 1.4rem; margin: 1.8rem 0;
}
.note-box p { margin: 0 0 0.9rem; font-size: 1rem; }
.note-box p:last-child { margin-bottom: 0; }
p.pull {
  font-size: 1.25rem; line-height: 1.65; color: var(--green-deep);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 1.2rem 0; margin: 2rem 0;
}

/* ---------- video ---------- */
.video { position: relative; padding-bottom: 56.25%; height: 0; margin: 2.2rem 0; }
.video iframe {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  border-radius: 8px; border: 0;
}

/* ---------- chapter cards ---------- */
.cards { display: grid; gap: 0.9rem; margin: 1.5rem 0 2.5rem; }
@media (min-width: 640px) { .cards { grid-template-columns: 1fr 1fr; } }
.card {
  display: flex; gap: 0.9rem; align-items: flex-start;
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: 1rem 1.1rem; text-decoration: none; color: inherit;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(43,37,28,0.12); color: inherit; }
.card-n {
  font-family: var(--sans); font-weight: 800; font-size: 1.3rem; color: var(--copper);
  line-height: 1.2; min-width: 1.6rem;
}
.card-t { display: flex; flex-direction: column; min-width: 8.5rem; }
.card-t strong { font-family: var(--sans); font-size: 0.98rem; color: var(--green-deep); }
.card-t em { font-family: var(--sans); font-style: normal; font-size: 0.78rem; color: var(--muted); }
.card-d { font-size: 0.92rem; line-height: 1.55; color: var(--ink); }
.card.ref .card-t { min-width: 0; }

/* ---------- prev / next ---------- */
.prevnext {
  display: flex; justify-content: space-between; gap: 0.8rem;
  margin: 3.5rem 0 1rem; padding-top: 1.8rem; border-top: 2px solid var(--line);
}
.pn {
  flex: 1; display: flex; flex-direction: column; gap: 0.15rem;
  text-decoration: none; background: #fff; border: 1px solid var(--line);
  border-radius: 10px; padding: 0.85rem 1rem; color: inherit;
}
.pn:hover { border-color: var(--copper); color: inherit; }
.pn span { font-family: var(--sans); font-size: 0.75rem; color: var(--muted); }
.pn strong { font-family: var(--sans); font-size: 0.95rem; color: var(--green-deep); }
.pn.next { text-align: right; }
.pn.all { flex: 0.6; align-items: center; justify-content: center; text-align: center; }
@media (max-width: 560px) { .pn.all { display: none; } }

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--line); margin-top: 3rem;
  padding: 2rem 0 3rem; background: var(--paper-2);
}
footer p {
  font-family: var(--sans); font-size: 0.85rem; color: var(--muted);
  line-height: 1.7; margin: 0; text-align: center;
}
footer strong { color: var(--green-deep); }