/* ==========================================================================
   ENCO — Motif signature "ligne de transmission" & transitions
   ========================================================================== */

.transmission {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
}

.section-transition {
  position: relative;
  height: 88px;
}

@media (max-width: 640px) {
  .section-transition {
    height: 56px;
  }
}

.transmission svg {
  width: 100%;
  height: 100%;
  display: block;
}

.transmission__path {
  fill: none;
  stroke: var(--color-line-on-dark);
  stroke-width: 1;
  stroke-dasharray: 2 6;
}

.transmission__pulse {
  fill: var(--color-amber-400);
  filter: drop-shadow(0 0 6px rgba(242, 169, 59, 0.8));
  offset-rotate: 0deg;
  animation: pulse-travel 7s linear infinite;
}

.transmission__pulse--delay {
  animation-delay: 3.4s;
}

@keyframes pulse-travel {
  0% {
    offset-distance: 0%;
    opacity: 0;
  }
  6% {
    opacity: 1;
  }
  94% {
    opacity: 1;
  }
  100% {
    offset-distance: 100%;
    opacity: 0;
  }
}

.transmission--on-light .transmission__path {
  stroke: var(--color-line-on-light);
}

.transmission--on-light .transmission__pulse {
  fill: var(--color-orange-500);
  filter: drop-shadow(0 0 6px rgba(232, 114, 44, 0.45));
}

/* Séparateur de section : simple trait avec un nœud */
.line-divider {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-line-on-light);
  margin-block: var(--space-2xl);
}

.line-divider::before,
.line-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: currentColor;
}

.line-divider__node {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-orange-500);
  flex-shrink: 0;
}

/* Apparition douce au scroll */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms var(--ease-standard), transform 600ms var(--ease-standard);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .transmission__pulse,
  .transmission__pulse--delay {
    animation: none;
    opacity: 0;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}