/* Landing polish: scroll progress line, section rail, reveal-on-scroll.
   Companion to js/landing-fx.js. */

/* ── Scroll progress ── */
.fx-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  z-index: 700;
  pointer-events: none;
  transform-origin: 0 50%;
  transform: scaleX(0);
  background: linear-gradient(90deg, rgba(212, 175, 95, 0), #d4af5f 35%, #f3d98c);
  box-shadow: 0 0 12px rgba(212, 175, 95, 0.6);
}

/* ── Section rail ── */
.fx-rail {
  position: fixed;
  left: 22px;
  top: 50%;
  z-index: 450;
  display: none;
  flex-direction: column;
  gap: 4px;
  transform: translateY(-50%);
  opacity: 0;
  transition: opacity 0.5s ease;
}
.fx-rail.is-shown { opacity: 1; }
@media (min-width: 1200px) and (pointer: fine) {
  .fx-rail { display: flex; }
}
.fx-rail a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 4px;
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
}
.fx-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.45);
  transition: transform 0.35s ease, background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}
.fx-label {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.fx-rail a:hover .fx-label,
.fx-rail a:focus-visible .fx-label { opacity: 1; transform: none; color: #fff; }
.fx-rail a.is-active .fx-dot {
  transform: scale(1.5);
  background: #d4af5f;
  border-color: #d4af5f;
  box-shadow: 0 0 10px rgba(212, 175, 95, 0.8);
}
.fx-rail a.is-active:hover .fx-label { color: #d4af5f; }

/* ── Reveal on scroll (uses `translate`, so it never fights GSAP or hover transforms) ── */
.fx-on .fx-reveal {
  opacity: 0;
  translate: 0 34px;
  transition: opacity 0.9s cubic-bezier(0.2, 0.7, 0.2, 1), translate 0.9s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.fx-on .fx-reveal.fx-in {
  opacity: 1;
  translate: 0 0;
}