/* ==========================================================================
   SHOWPIECE 3 — "The Halo Process" scroll sequence
   --------------------------------------------------------------------------
   Content: each .process-step holds its own .process-step-number, -title,
   -text and -image in the HTML. With no JS (and on tablet/mobile) the steps
   render as a clean stacked list.
   assets/js/showpiece-process.js (desktop only) moves each step's image into
   a sticky stage it creates, reveals the active photo with a circular "halo"
   wipe, and fills a progress line. Add a step in the markup and it joins in.
   ========================================================================== */

.process-track {
  display: flex;
  align-items: flex-start;
  gap: clamp(40px, 6vw, 96px);
}

.process-steps {
  position: relative;
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 72px;
}

.process-step {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.process-step-number {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5.25rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: rgba(236, 241, 236, 0.16);
  transition: color 0.6s var(--ease-out), text-shadow 0.6s;
}

.process-step-title { font-size: clamp(1.5rem, 2.6vw, 2.3rem); letter-spacing: -0.025em; }

.process-step-text { max-width: 46ch; color: var(--color-muted); font-size: 1.05rem; }

.process-step-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  margin-top: 8px;
  border-radius: var(--radius);
}

/* ---- Enhanced (desktop + JS) ---- */
.process.is-enhanced .process-steps { gap: 0; padding-left: 56px; }

.process.is-enhanced .process-step {
  min-height: 74vh;
  justify-content: center;
  opacity: 0.26;
  transition: opacity 0.7s var(--ease-out);
}

.process.is-enhanced .process-step.is-active { opacity: 1; }

.process.is-enhanced .process-step.is-active .process-step-number {
  color: var(--color-primary);
  text-shadow: 0 0 44px rgba(34, 224, 122, 0.45);
}

/* progress line + travelling halo (created by JS) */
.process-progress {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: var(--color-line);
}

.process-progress-bar {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--color-accent), var(--color-primary));
  box-shadow: 0 0 14px rgba(34, 224, 122, 0.8);
  transform-origin: top;
  transform: scaleY(var(--process-progress, 0));
}

.process-progress::after {
  content: "";
  position: absolute;
  left: 50%;
  top: calc(var(--process-progress, 0) * 100%);
  width: 22px;
  height: 8px;
  border: 1.5px solid var(--color-accent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 14px rgba(34, 224, 122, 0.9), inset 0 0 6px rgba(34, 224, 122, 0.6);
}

/* sticky stage (created by JS) */
.process-stage {
  position: sticky;
  top: 13vh;
  flex: 1.15 1 0;
  min-width: 0;
  height: 74vh;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--color-surface);
  box-shadow: 0 60px 120px -60px rgba(34, 224, 122, 0.35);
}

.process-stage-frame {
  position: absolute;
  inset: 0;
  clip-path: circle(0% at 50% 50%);
  transition: clip-path 1.2s var(--ease-out);
}

.process-stage-frame.is-shown { clip-path: circle(75% at 50% 50%); }

.process-stage-frame .process-step-image {
  width: 100%;
  height: 100%;
  aspect-ratio: auto;
  margin: 0;
  border-radius: 0;
  transform: scale(1.14);
  transition: transform 1.8s var(--ease-out);
}

.process-stage-frame.is-shown .process-step-image { transform: scale(1); }

.process-stage::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  background: linear-gradient(0deg, rgba(7, 17, 12, 0.75) 0%, rgba(7, 17, 12, 0) 38%);
}


@media (max-width: 1024px) {
  .process-track { flex-direction: column; }
  .process-steps { gap: 64px; }
}