/* ===========================
   flow.css — Flujo de funcionamiento interactivo (landings)
   Nodos conectados + pulso que avanza + panel de detalle.
   Color por página con --flow-rgb (por defecto naranja de marca).
   =========================== */
.flow {
  --flow-rgb: 176,78,10;
  --flow: var(--accent-ink);
  --flow-p: 0;
  max-width: 980px;
  margin: 0 auto;
}

/* --- Pista de nodos --- */
.flow__track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(var(--flow-n, 5), 1fr);
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.flow__line,
.flow__fill {
  position: absolute;
  top: 28px;
  left: calc(50% / var(--flow-n, 5));
  right: calc(50% / var(--flow-n, 5));
  height: 2px;
  border-radius: 2px;
}
.flow__line { background: var(--bg-2); }
.flow__fill {
  background: var(--flow);
  transform-origin: left center;
  transform: scaleX(var(--flow-p));
  transition: transform 0.6s ease;
}

.flow__node {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  padding: 0;
  background: none;
  border: 0;
  color: var(--text-3);
  font: inherit;
  cursor: pointer;
  text-align: center;
}

.flow__dot {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--bg-2);
  border: 2px solid var(--border);
  color: var(--text-2);
  font-family: var(--font-display);
  font-size: 0.95rem;
  transition: border-color var(--transition), background var(--transition), color var(--transition), transform var(--transition);
}
.flow__dot svg { width: 24px; height: 24px; }

.flow__label {
  font-size: 0.85rem;
  line-height: 1.3;
  max-width: 12ch;
  transition: color var(--transition);
}

.flow__node:hover .flow__dot { border-color: var(--border),0.5); }
.flow__node.is-done .flow__dot { border-color: var(--flow); color: var(--flow); }
.flow__node[aria-selected="true"] .flow__dot {
  background: var(--flow);
  border-color: var(--flow);
  color: var(--bg);
  transform: scale(1.08);
}
.flow__node[aria-selected="true"] .flow__label { color: var(--text); }
.flow__node:focus-visible { outline: none; }
.flow__node:focus-visible .flow__dot { outline: 2px solid var(--blue); outline-offset: 4px; }

/* --- Panel de detalle --- */
.flow__panel {
  position: relative;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--flow);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  min-height: 200px;
}
.flow__detail[hidden] { display: none; }
.flow__detail { animation: flowIn 0.35s ease; }
.flow__step {
  font-size: 0.72rem;
  color: var(--flow);
}
.flow__detail h3 { margin: 0.35rem 0 0.6rem; font-size: 1.2rem; }
.flow__detail p { color: var(--text-2); margin: 0 0 1rem; }

/* Ejemplo: entrada → salida en fichas */
.flow__example {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
}
.flow__chip {
  padding: 0.35rem 0.8rem;
  border-radius: 20px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--text-2);
}
.flow__chip--out {
  background: var(--accent-tint);
  border-color: var(--accent-line);
  color: var(--text);
}
.flow__arrow { color: var(--flow); }

/* --- Controles --- */
.flow__controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
  gap: 1rem;
}
.flow__hint { font-size: 0.8rem; color: var(--text-3); }
.flow__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.9rem;
  border-radius: 20px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-2);
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.flow__btn:hover { border-color: var(--flow); color: var(--text); }
.flow__btn:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

@keyframes flowIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

/* --- Móvil: pista vertical a la izquierda, panel al lado --- */
@media (max-width: 900px) {
  .flow__btn { min-height: 44px; }
}
@media (max-width: 720px) {
  .flow { display: grid; grid-template-columns: auto 1fr; gap: 1rem; }
  .flow__track {
    grid-template-columns: 1fr;
    grid-auto-rows: auto;
    align-content: start;
    gap: 1.1rem;
    margin: 0;
  }
  .flow__line,
  .flow__fill {
    top: 22px; bottom: 22px;
    left: 21px; right: auto;
    width: 2px; height: auto;
  }
  .flow__fill { transform-origin: center top; transform: scaleY(var(--flow-p)); }
  .flow__dot { width: 44px; height: 44px; font-size: 0.8rem; }
  .flow__dot svg { width: 20px; height: 20px; }
  .flow__label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
  .flow__panel { padding: 1.25rem; min-height: 0; min-width: 0; }
  .flow__controls { grid-column: 1 / -1; flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  .flow__fill, .flow__dot, .flow__label { transition: none; }
  .flow__detail { animation: none; }
}