/* ============================================================
   AGENCY BACKBONE — how-it-works.css
   ============================================================ */

.how-it-works {
  background-color: var(--bg-primary);
  padding-top: var(--space-16);
  padding-bottom: var(--space-12);
}

.how-it-works__timeline {
  position: relative;
  max-width: 900px;
  margin-inline: auto;
}

.timeline__line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  transform: translateX(-50%);
  background-color: var(--border);
  overflow: hidden;
}

.timeline__line-fill {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 0%;
  background: var(--gradient-gold);
  transition: height 1.2s ease;
}

.timeline__line-fill.is-visible {
  height: 100%;
}

.timeline__step {
  display: grid;
  grid-template-columns: calc(50% - 20px) 40px calc(50% - 20px);
  align-items: center;
  padding-block: var(--space-10);
  opacity: 0.25;
  transition: opacity 400ms ease;
}

.timeline__step--active {
  opacity: 1;
}

.timeline__step-number {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: var(--size-5xl);
  line-height: 1;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-align: right;
  padding-right: var(--space-12);
  grid-column: 1;
  grid-row: 1;
}

.timeline__step-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gradient-gold);
  justify-self: center;
  box-shadow: 0 0 12px rgba(181, 139, 62, 0.5);
  transition: transform 400ms ease, box-shadow 400ms ease;
  grid-column: 2;
  grid-row: 1;
}

.timeline__step--active .timeline__step-dot {
  transform: scale(1.4);
  box-shadow: 0 0 20px rgba(181, 139, 62, 0.8);
}

.timeline__step-content {
  padding-left: var(--space-12);
  grid-column: 3;
  grid-row: 1;
}

.timeline__step--reverse .timeline__step-number {
  grid-column: 3;
  text-align: left;
  padding-right: 0;
  padding-left: var(--space-12);
}

.timeline__step--reverse .timeline__step-content {
  grid-column: 1;
  padding-left: 0;
  padding-right: var(--space-12);
  text-align: right;
}

.timeline__step--reverse .timeline__step-body {
  margin-left: auto;
  margin-right: 0;
}

.timeline__step-title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: var(--size-xl);
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
  transition: transform 400ms ease;
  white-space: nowrap;
  transform-origin: left center;
}

.timeline__step--active .timeline__step-title {
  transform: scale(1.086);
}

.timeline__step--reverse .timeline__step-title {
  transform-origin: right center;
}

.timeline__step-body {
  font-size: var(--size-sm);
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 380px;
  transition: transform 400ms ease;
  transform-origin: left center;
}

.timeline__step--active .timeline__step-body {
  transform: scale(1.143);
}

.timeline__step--reverse .timeline__step-body {
  transform-origin: right center;
}