/* ========================================
   CÓMO LO HACEMOS (Idea → Proyecto → Solución)
   Tarjetas de vidrio conectadas por una línea que se dibuja al
   scrollear (stroke-dashoffset) con nodos que pulsan en el paso
   activo. Horizontal en desktop, vertical en móvil.
   ======================================== */

.process {
  padding: var(--sp-20) var(--sp-6);
  position: relative;
}

.process .section-header {
  max-width: var(--measure);
  margin-inline: auto;
  text-align: center;
}

.process .section-subtitle {
  color: var(--text-cool);
  font-size: var(--fs-base);
  margin-top: var(--sp-2);
}

/* --- Track: contiene la línea SVG + los pasos --- */
.process-track {
  position: relative;
  max-width: var(--container);
  margin: var(--sp-12) auto 0;
}

.process-line {
  position: absolute;
  overflow: visible;
  pointer-events: none;
}

.process-line-bg,
.process-line-progress {
  fill: none;
  stroke-linecap: round;
}

.process-line-bg {
  stroke: var(--border-hairline-strong);
  stroke-width: 0.6;
}

.process-line-progress {
  stroke: var(--cyan);
  stroke-width: 0.6;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  filter: drop-shadow(0 0 6px var(--cyan-25));
}

/* Línea horizontal: visible desde 900px, ubicada a la altura de los nodos */
.process-line--horizontal {
  display: none;
  inset: 0;
  width: 100%;
  height: 100%;
  top: -34px;
}

.process-line--vertical {
  display: block;
  left: 19px;
  top: 0;
  width: 10px;
  height: 100%;
}

@media (min-width: 900px) {
  .process-line--horizontal { display: block; }
  .process-line--vertical { display: none; }
}

/* --- Pasos --- */
.process-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--sp-12);
}

@media (min-width: 900px) {
  .process-steps {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--sp-6);
  }
}

.process-step {
  position: relative;
  display: flex;
  gap: var(--sp-4);
}

@media (min-width: 900px) {
  .process-step {
    flex: 1;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

/* --- Nodo numerado --- */
.process-node {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: var(--r-pill);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-mid);
  border: 1.5px solid var(--border-hairline-strong);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-weight: 600;
  z-index: 1;
  transition: border-color var(--dur-base) var(--ease-standard),
              box-shadow var(--dur-base) var(--ease-standard),
              transform var(--dur-base) var(--ease-standard);
}

.process-step.is-active .process-node {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: 0 0 0 6px var(--cyan-10), 0 0 20px var(--cyan-25);
  animation: process-pulse 1.8s var(--ease-standard) infinite;
}

@keyframes process-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}

/* --- Tarjeta de vidrio --- */
.process-card {
  flex: 1;
  background: color-mix(in srgb, var(--surface-mid) 65%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-hairline);
  border-radius: var(--r-lg);
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.process-card h3 {
  font-family: var(--font-primary);
  font-size: var(--fs-h3);
  margin: 0;
  color: var(--text-light);
}

.process-step-promise {
  color: var(--accent-text);
  font-weight: 600;
  margin: 0 0 var(--sp-2);
}

.process-card-media {
  width: 72px;
  height: 72px;
  border-radius: var(--r-md);
  margin: 0 auto var(--sp-2);
  overflow: hidden;
}

@media (min-width: 900px) {
  .process-card-media { margin-inline: auto; }
}

.process-card-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Fallback visual cuando no hay imagen 3D todavía (o el archivo falla) */
.img-slot {
  background: radial-gradient(circle at 30% 30%, var(--accent-25), transparent 70%),
              linear-gradient(135deg, var(--surface-tint), var(--surface-mid));
  position: relative;
}

.img-slot::before {
  content: '';
  position: absolute;
  inset: 22%;
  border: 1.5px solid var(--border-hairline-strong);
  border-radius: var(--r-sm);
  opacity: 0.6;
}

.img-slot.img-slot--broken img {
  display: none;
}

.process-step-details {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  text-align: left;
}

.process-step-details dt {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-faint);
  margin-bottom: 2px;
}

.process-step-details dd {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: var(--lh-body);
  color: var(--text-subtle);
}

/* "Qué necesitamos de vos" se expande con hover/foco; siempre visible en táctil */
.process-step-details div:nth-child(2) dd {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height var(--dur-base) var(--ease-standard),
              opacity var(--dur-base) var(--ease-standard);
}

@media (hover: hover) and (pointer: fine) {
  .process-card:hover .process-step-details div:nth-child(2) dd,
  .process-card:focus-within .process-step-details div:nth-child(2) dd {
    max-height: 200px;
    opacity: 1;
  }
}

@media (pointer: coarse), (hover: none) {
  .process-step-details div:nth-child(2) dd {
    max-height: none;
    opacity: 1;
  }
}

.process-step-cta {
  margin-top: var(--sp-2);
  align-self: flex-start;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-fast) var(--ease-out);
}

.process-step-cta:hover,
.process-step-cta:focus-visible {
  border-color: var(--cyan);
}

/* --- Ejemplo didáctico --- */
.process-example {
  max-width: var(--container);
  margin: var(--sp-12) auto 0;
  padding: var(--sp-6);
  border: 1px solid var(--border-hairline);
  border-radius: var(--r-lg);
  background: var(--surface-1);
}

.process-example-label {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-faint);
  margin: 0 0 var(--sp-4);
}

.process-example-grid {
  display: grid;
  gap: var(--sp-3);
}

@media (min-width: 700px) {
  .process-example-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.process-example-grid p {
  margin: 0;
  font-size: var(--fs-sm);
  color: var(--text-subtle);
  line-height: var(--lh-body);
}

.process-example-grid strong {
  color: var(--text-light);
}

.process-cta {
  display: flex;
  justify-content: center;
  margin-top: var(--sp-10);
}

/* --- Reduced motion: línea completa, nodos activos sin animación --- */
@media (prefers-reduced-motion: reduce) {
  .process-node.is-active,
  .process-node {
    animation: none !important;
  }
}