/* ── Toggle button ── */
.view-toggle {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
}
.view-toggle button {
  padding: 0.5rem 1.25rem;
  border: 2px solid #2563eb;
  border-radius: 2rem;
  background: transparent;
  color: #2563eb;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.25s ease;
}
.view-toggle button.active {
  background: #2563eb;
  color: #fff;
}

/* ── Normal (plain) view ── */
.roadmap-normal { display: none; }
.roadmap-normal.active { display: block; }
.roadmap-normal .step-normal {
  margin-bottom: 2rem;
  padding: 1.25rem 1.5rem;
  border-left: 4px solid #2563eb;
  background: #f8fafc;
  border-radius: 0 0.75rem 0.75rem 0;
}
.roadmap-normal .step-normal h3 { margin-top: 0; }

/* ── Visual (timeline) view ── */
.roadmap-visual { display: none; }
.roadmap-visual.active { display: block; }

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: 1rem 0 2rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, #2563eb 0%, #7c3aed 50%, #06b6d4 100%);
  transform: translateX(-50%);
  border-radius: 2px;
}

.timeline-step {
  position: relative;
  width: 50%;
  padding: 0 2.5rem 3rem;
  box-sizing: border-box;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.timeline-step.visible {
  opacity: 1;
  transform: translateY(0);
}

.timeline-step:nth-child(odd) {
  left: 0;
  text-align: right;
  padding-right: 3rem;
  padding-left: 0;
}
.timeline-step:nth-child(even) {
  left: 50%;
  text-align: left;
  padding-left: 3rem;
  padding-right: 0;
}

/* Node dot on the line */
.timeline-step::before {
  content: attr(data-step);
  position: absolute;
  top: 0.25rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  box-shadow: 0 0 0 5px #fff, 0 0 12px rgba(37,99,235,0.35);
}
.timeline-step:nth-child(odd)::before {
  right: -1.25rem;
}
.timeline-step:nth-child(even)::before {
  left: -1.25rem;
}

.timeline-step:nth-child(1)::before { background: #2563eb; }
.timeline-step:nth-child(2)::before { background: #7c3aed; }
.timeline-step:nth-child(3)::before { background: #06b6d4; }
.timeline-step:nth-child(4)::before { background: #10b981; }
.timeline-step:nth-child(5)::before { background: #f59e0b; }
.timeline-step:nth-child(6)::before { background: #ef4444; }

/* Card inside each step */
.step-card {
  background: #fff;
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  text-align: left;
  border-top: 4px solid;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.step-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}
.timeline-step:nth-child(1) .step-card { border-top-color: #2563eb; }
.timeline-step:nth-child(2) .step-card { border-top-color: #7c3aed; }
.timeline-step:nth-child(3) .step-card { border-top-color: #06b6d4; }
.timeline-step:nth-child(4) .step-card { border-top-color: #10b981; }
.timeline-step:nth-child(5) .step-card { border-top-color: #f59e0b; }
.timeline-step:nth-child(6) .step-card { border-top-color: #ef4444; }

.step-card .step-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.25rem;
}
.timeline-step:nth-child(1) .step-label { color: #2563eb; }
.timeline-step:nth-child(2) .step-label { color: #7c3aed; }
.timeline-step:nth-child(3) .step-label { color: #06b6d4; }
.timeline-step:nth-child(4) .step-label { color: #10b981; }
.timeline-step:nth-child(5) .step-label { color: #f59e0b; }
.timeline-step:nth-child(6) .step-label { color: #ef4444; }

.step-card h3 {
  margin: 0.25rem 0 0.5rem;
  font-size: 1.15rem;
}
.step-card p {
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
  color: #475569;
  line-height: 1.5;
}
.step-card ul {
  margin: 0;
  padding-left: 1.25rem;
  font-size: 0.9rem;
  color: #475569;
}
.step-card ul li { margin-bottom: 0.3rem; }

/* ── "Coming soon" pulse ── */
.coming-soon .step-card {
  border-style: dashed;
  opacity: 0.7;
}

/* ── Mobile: single-column ── */
@media (max-width: 700px) {
  .timeline::before { left: 1.25rem; }

  .timeline-step,
  .timeline-step:nth-child(odd),
  .timeline-step:nth-child(even) {
    left: 0;
    width: 100%;
    padding-left: 3.5rem;
    padding-right: 0;
    text-align: left;
  }
  .timeline-step::before,
  .timeline-step:nth-child(odd)::before,
  .timeline-step:nth-child(even)::before {
    left: 0;
    right: auto;
  }
}