/* "Do problema à solução" — scroll-driven pipeline. */

.process {
  background: var(--navy-925);
  overflow: hidden;
}

.process__mascot {
  position: absolute;
  width: 520px;
  height: 520px;
  right: -140px;
  top: 60px;
  opacity: 0.06;
  pointer-events: none;
}

.pipeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  --p: 0;
}

.pipeline__track {
  position: absolute;
  left: 10%;
  right: 10%;
  top: 36px;
  height: 2px;
  background: var(--line-2);
}

.pipeline__fill {
  position: absolute;
  inset: 0;
  transform-origin: left;
  transform: scaleX(var(--p));
  background: linear-gradient(90deg, var(--lime-30), var(--lime));
  box-shadow: 0 0 14px rgba(215, 243, 0, 0.6);
}

.pipeline__fill::after {
  content: "";
  position: absolute;
  right: -4px;
  top: 50%;
  width: 8px;
  height: 8px;
  margin-top: -4px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 12px 3px rgba(215, 243, 0, 0.7);
}

.step__arrow {
  display: none;
}

.step {
  position: relative;
  text-align: center;
  padding: 0 6px;
}

.step__node {
  position: relative;
  z-index: 1;
  width: 72px;
  height: 72px;
  margin: 0 auto 22px;
  display: grid;
  place-items: center;
  border-radius: 20px;
  background: var(--navy-850);
  border: 1px solid var(--line-2);
  transition:
    border-color 0.5s,
    box-shadow 0.5s,
    background 0.5s,
    transform 0.5s var(--ease);
}

.step__node svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: var(--muted-2);
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke 0.5s;
}

.step__node img {
  width: 38px;
  height: 38px;
  object-fit: contain;
  opacity: 0.35;
  filter: grayscale(1);
  transition:
    opacity 0.5s,
    filter 0.5s;
}

.step__idx {
  display: block;
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--muted-2);
  margin-bottom: 6px;
  transition: color 0.5s;
}

.step__title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 22px;
  margin-bottom: 8px;
  color: var(--muted);
  transition: color 0.5s;
}

.step__text {
  font-size: 14.5px;
  color: var(--muted-2);
  max-width: 220px;
  margin: 0 auto;
  transition: color 0.5s;
}

.step.is-active .step__node {
  border-color: var(--lime);
  box-shadow:
    0 0 0 6px var(--lime-08),
    0 0 30px -4px rgba(215, 243, 0, 0.45);
  transform: translateY(-4px);
}

.step.is-active .step__node svg {
  stroke: var(--lime);
}

.step.is-active .step__idx {
  color: var(--lime);
}

.step.is-active .step__title {
  color: var(--text);
}

.step.is-active .step__text {
  color: var(--muted);
}

.step--final.is-active .step__node {
  background: radial-gradient(circle, rgba(215, 243, 0, 0.18), var(--navy-850));
  box-shadow:
    0 0 0 8px var(--lime-08),
    0 0 50px rgba(215, 243, 0, 0.55);
}

.step--final.is-active .step__node img {
  opacity: 1;
  filter: none;
}

.step--final.is-active .step__title {
  color: var(--lime);
}

@media (max-width: 960px) {
  .pipeline {
    grid-template-columns: 1fr;
    gap: 0;
    max-width: 420px;
    margin: 0 auto;
  }
  .pipeline__track {
    display: none;
  }
  .step__arrow {
    display: block;
    text-align: center;
    font-size: 22px;
    color: var(--muted-2);
    padding: 12px 0;
    transition: color 0.5s;
  }
  .step__arrow.is-active {
    color: var(--lime);
  }
  .step__node {
    margin-bottom: 14px;
  }
}