/* Section styles: marquee, about facts, and tracks. */

/* Marquee: eight identical copies so the loop never runs out, even on 4K-wide screens.
   It slides by half (four copies) per cycle, so the duration is 4x to keep the original pace. */
.marquee-track { animation-duration: 152s; }

/* About: fuller, higher-contrast copy and fact cells. */
#about .section-lede { font-size: 1.1rem; line-height: 1.75; color: #163a49; max-width: 50ch; }
#about .facts {
  background: rgba(255, 255, 255, .5);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, .7);
  box-shadow: 0 18px 40px -20px rgba(9, 45, 59, .3);
  overflow: hidden;
}
#about .fact { background: none; padding: 28px 22px; gap: 16px; }
#about .fact svg { flex: 0 0 30px; width: 30px; height: 30px; }
#about .fact b { font-size: 1.65rem; font-weight: 700; letter-spacing: -.02em; color: #092d3b; }
#about .fact span { font-size: .92rem; line-height: 1.5; color: #1f4352; font-weight: 500; margin-top: 6px; }
@media (max-width: 640px) {
  #about .section-lede { font-size: 1rem; }
  #about .fact { padding: 20px 14px; gap: 10px; }
  #about .fact b { font-size: 1.3rem; }
  #about .fact span { font-size: .82rem; }
}

#tracks .tracks-heading h2 { margin-bottom: 32px; }

/* Shared frosted-glass surface. */
.tracks-panel,
.track-card {
  background: linear-gradient(160deg, rgba(255, 255, 255, .62), rgba(255, 255, 255, .38));
  -webkit-backdrop-filter: blur(10px) saturate(1.2);
          backdrop-filter: blur(10px) saturate(1.2);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .7) inset, 0 18px 40px -18px rgba(9, 45, 59, .28);
}

.tracks-panel {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: clamp(24px, 4vw, 44px);
  padding: clamp(28px, 4vw, 48px);
  border-radius: 28px;
  border: 1.5px dashed rgba(7, 93, 69, .32);
}

/* Fish badge with sonar rings. */
.tracks-badge {
  position: relative;
  display: grid; place-items: center;
  width: 104px; height: 104px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 0 6px rgba(0, 203, 140, .14), 0 0 0 1.5px #00b37f inset, 0 10px 24px -8px rgba(9, 45, 59, .3);
  color: #00b37f;
}
.tracks-badge svg { width: 52px; height: 30px; }
.tracks-badge::before,
.tracks-badge::after {
  content: ""; position: absolute; inset: -6px; border-radius: 50%;
  border: 1.5px solid rgba(0, 179, 127, .45);
  animation: ping 3s ease-out infinite;
}
.tracks-badge::after { animation-delay: 1.5s; }

.tracks-status {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 12px 5px 10px;
  border-radius: 999px;
  background: rgba(7, 93, 69, .1);
  font: 600 .66rem/1 var(--mono);
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--sea-accent);
}
.tracks-status i {
  width: 7px; height: 7px; border-radius: 50%;
  background: #00b37f;
  animation: pingdot 2s ease-out infinite;
}
.tracks-copy h3 {
  margin: 14px 0 10px;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  letter-spacing: -.035em;
  line-height: 1.05;
  color: var(--sea-ink);
}
.tracks-copy p {
  margin: 0;
  max-width: 58ch;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--sea-muted);
}

/* Track cards. */
.tracks-grid {
  list-style: none;
  margin: 18px 0 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.track-card {
  display: flex; flex-direction: column; gap: 22px;
  padding: 22px 22px 18px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, .7);
  transition: transform .25s ease, box-shadow .25s ease;
}
.track-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .7) inset, 0 24px 44px -18px rgba(9, 45, 59, .38);
}
.track-top { display: flex; justify-content: space-between; align-items: center; }
.track-num {
  font: 600 .72rem/1 var(--mono);
  letter-spacing: .16em; text-transform: uppercase;
  color: var(--sea-muted);
}
.track-icon {
  display: grid; place-items: center;
  width: 38px; height: 38px;
  border-radius: 12px;
}
.track-icon svg { width: 22px; height: 22px; }
.track-icon.coral { background: rgba(255, 127, 106, .14); color: #f0705c; }
.track-icon.pink  { background: rgba(236, 120, 190, .14); color: #e07bbd; }
.track-icon.blue  { background: rgba(58, 159, 214, .14); color: #3a9fd6; }

.track-body { display: flex; flex-direction: column; gap: 10px; }
.track-name {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -.02em;
  color: var(--sea-ink);
  opacity: .55;
}
.track-skel {
  height: 8px; border-radius: 6px;
  background: linear-gradient(90deg, rgba(9, 45, 59, .07), rgba(9, 45, 59, .15), rgba(9, 45, 59, .07)) 0 0 / 200% 100%;
  animation: shimmer 3s linear infinite;
}
.track-skel.short { width: 58%; }

.track-foot {
  display: flex; justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid rgba(9, 45, 59, .1);
  font: 400 .68rem/1 var(--mono);
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--sea-muted);
}
.track-foot span + span { color: var(--sea-accent); font-weight: 600; }

@media (max-width: 760px) {
  .tracks-panel { grid-template-columns: 1fr; justify-items: start; }
  .tracks-badge { width: 80px; height: 80px; }
  .tracks-badge svg { width: 40px; height: 23px; }
  .tracks-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .tracks-badge::before, .tracks-badge::after, .tracks-status i, .track-skel { animation: none; }
  .track-card { transition: none; }
}