/* ==========================================================================
   Process — five-step timeline on navy
   When the list scrolls into view (.is-revealed) the rail draws across and
   each step's node lights up in sequence.
   ========================================================================== */

.process { position: relative; isolation: isolate; overflow: hidden; }
.process__bg {
  position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(rgb(255 255 255 / 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgb(255 255 255 / 0.035) 1px, transparent 1px);
  background-size: var(--space-8) var(--space-8);
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 50% 100%, #000 20%, transparent 80%);
          mask-image: radial-gradient(ellipse 70% 80% at 50% 100%, #000 20%, transparent 80%);
}

.process__steps {
  --node: var(--space-7);
  position: relative;
  display: grid;
  gap: var(--space-5);
}
/* Rail: vertical on phones, horizontal from lg */
.process__steps::before,
.process__steps::after {
  content: "";
  position: absolute;
  left: calc(var(--node) / 2 - 1px);
  top: calc(var(--node) / 2);
  bottom: calc(var(--node) / 2);
  width: var(--border-thick);
  background: var(--color-inverse-border);
}
.process__steps::after {
  background: var(--color-accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 1600ms var(--ease-in-out) 200ms;
}
.process__steps.is-revealed::after { transform: scaleY(1); }

.process-step {
  position: relative;
  display: grid;
  grid-template-columns: var(--node) 1fr;
  column-gap: var(--space-3);
  align-items: start;
}
.process-step > :not(.process-step__node) { grid-column: 2; }

.process-step__node {
  grid-row: 1 / span 3;
  position: relative; z-index: var(--z-base);
  display: grid; place-items: center;
  width: var(--node); height: var(--node);
  border-radius: var(--radius-full);
  background: var(--navy-800);
  border: var(--border-thin) solid var(--color-inverse-border);
  color: var(--steel-300);
  box-shadow: 0 0 0 var(--space-1) var(--color-inverse-bg);
  transition:
    background-color var(--dur-slow) var(--ease-out),
    color var(--dur-slow) var(--ease-out),
    border-color var(--dur-slow) var(--ease-out),
    box-shadow var(--dur-slow) var(--ease-out);
  transition-delay: calc(300ms + var(--i) * 280ms);
}
.process__steps.is-revealed .process-step__node {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-on-accent);
  box-shadow: 0 0 0 var(--space-1) var(--color-inverse-bg), var(--shadow-accent);
}

.process-step__num {
  font-family: var(--font-display);
  font-variation-settings: "wdth" 125;
  font-size: var(--text-xs);
  line-height: var(--leading-xs);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wide);
  color: var(--signal-400);
}
.process-step__title {
  margin-top: var(--space-half);
  font-size: var(--text-lg);
  line-height: var(--leading-lg);
}
.process-step__text {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  line-height: var(--leading-xs);
  color: var(--color-inverse-muted);
  max-width: 28rem;
}

/* Step copy fades up after its node lights */
.js .process-step > :not(.process-step__node) {
  opacity: 0;
  transform: translateY(var(--space-1));
  transition: opacity var(--dur-reveal) var(--ease-out), transform var(--dur-reveal) var(--ease-out);
  transition-delay: calc(360ms + var(--i) * 280ms);
}
.js .process__steps.is-revealed .process-step > :not(.process-step__node) { opacity: 1; transform: none; }
/* The list itself shouldn't slide — only its children animate */
.js .process__steps[data-reveal] { opacity: 1; transform: none; }

@media (min-width: 1024px) {
  .process__steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: var(--space-4);
  }
  .process__steps::before,
  .process__steps::after {
    left: calc(var(--node) / 2);
    right: calc(100% / 5 - var(--node) / 2);
    top: calc(var(--node) / 2 - 1px);
    bottom: auto;
    width: auto;
    height: var(--border-thick);
  }
  .process__steps::after { transform: scaleX(0); transform-origin: left; }
  .process__steps.is-revealed::after { transform: scaleX(1); }

  .process-step { grid-template-columns: 1fr; row-gap: 0; }
  .process-step > :not(.process-step__node) { grid-column: 1; }
  .process-step__node { grid-row: auto; margin-bottom: var(--space-3); }
}