/* ==========================================================================
   VoltMind AI - Animated Process Roadmap
   Horizontal timeline with scroll-triggered animations
   ========================================================================== */

/* ==========================================================================
   ROADMAP CONTAINER
   ========================================================================== */
.roadmap {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
  padding-top: 16px;
}

/* ==========================================================================
   SVG CONNECTING PATH
   ========================================================================== */
.roadmap__path {
  position: absolute;
  top: 48px;
  left: 60px;
  right: 60px;
  width: calc(100% - 120px);
  height: 8px;
  z-index: 0;
  overflow: visible;
}

.roadmap__track {
  stroke: #E2E8F0;
  stroke-width: 4;
  stroke-linecap: round;
}

.roadmap__progress {
  stroke: #2563EB;
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  transition: stroke-dashoffset 2s ease;
}

.roadmap.revealed .roadmap__progress {
  stroke-dashoffset: 0;
}

/* ==========================================================================
   STEP CONTAINER
   ========================================================================== */
.roadmap__step {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  z-index: 1;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.roadmap.revealed .roadmap__step[data-step="1"] { opacity: 1; transform: translateY(0); transition-delay: 0.2s; }
.roadmap.revealed .roadmap__step[data-step="2"] { opacity: 1; transform: translateY(0); transition-delay: 0.5s; }
.roadmap.revealed .roadmap__step[data-step="3"] { opacity: 1; transform: translateY(0); transition-delay: 0.8s; }
.roadmap.revealed .roadmap__step[data-step="4"] { opacity: 1; transform: translateY(0); transition-delay: 1.1s; }

/* ==========================================================================
   ICON CIRCLE
   ========================================================================== */
.roadmap__icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0;
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.roadmap__icon svg {
  width: 36px;
  height: 36px;
}

.roadmap__step:hover .roadmap__icon {
  transform: scale(1.1);
}

/* Icon color variants */
.roadmap__icon--discovery {
  background: #DBEAFE;
  color: #2563EB;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.2);
}
.roadmap__step:hover .roadmap__icon--discovery {
  box-shadow: 0 8px 28px rgba(37, 99, 235, 0.3);
}

.roadmap__icon--strategy {
  background: #0F172A;
  color: #FFFFFF;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.25);
}
.roadmap__step:hover .roadmap__icon--strategy {
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.35);
}

.roadmap__icon--implement {
  background: #D1FAE5;
  color: #059669;
  box-shadow: 0 4px 16px rgba(5, 150, 105, 0.2);
}
.roadmap__step:hover .roadmap__icon--implement {
  box-shadow: 0 8px 28px rgba(5, 150, 105, 0.3);
}

.roadmap__icon--support {
  background: #EDE9FE;
  color: #7C3AED;
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.2);
}
.roadmap__step:hover .roadmap__icon--support {
  box-shadow: 0 8px 28px rgba(124, 58, 237, 0.3);
}

/* Pulse ring on active step after reveal */
.roadmap.revealed .roadmap__icon::after {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid currentColor;
  opacity: 0;
  animation: roadmap-pulse 3s ease-in-out infinite;
}

.roadmap__step[data-step="1"] .roadmap__icon::after { animation-delay: 0.5s; }
.roadmap__step[data-step="2"] .roadmap__icon::after { animation-delay: 1.0s; }
.roadmap__step[data-step="3"] .roadmap__icon::after { animation-delay: 1.5s; }
.roadmap__step[data-step="4"] .roadmap__icon::after { animation-delay: 2.0s; }

@keyframes roadmap-pulse {
  0%, 100% { opacity: 0; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(1.15); }
}

/* ==========================================================================
   CONNECTOR DOT (below icon, on the track line)
   ========================================================================== */
.roadmap__connector {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #2563EB;
  border: 3px solid white;
  box-shadow: 0 0 0 2px #2563EB;
  margin: 8px 0 16px;
  position: relative;
  z-index: 2;
}

/* ==========================================================================
   CONTENT CARD
   ========================================================================== */
.roadmap__content {
  padding: 0 8px;
}

.roadmap__number {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: #2563EB;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.roadmap__title {
  font-size: 1.125rem;
  font-weight: 600;
  color: #0F172A;
  margin-bottom: 8px;
}

.roadmap__desc {
  font-size: 0.875rem;
  color: #64748B;
  line-height: 1.6;
  margin-bottom: 12px;
}

.roadmap__duration {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: #2563EB;
  background: #EFF6FF;
  padding: 4px 12px;
  border-radius: 12px;
}

/* ==========================================================================
   MOBILE RESPONSIVE
   ========================================================================== */
@media (max-width: 768px) {
  .roadmap {
    grid-template-columns: 1fr;
    gap: 0;
    padding-left: 48px;
  }

  .roadmap__path {
    top: 0;
    left: 24px;
    width: 8px;
    height: 100%;
    right: auto;
  }

  .roadmap__path line {
    x1: 4;
    y1: 0;
    x2: 4;
    y2: 1000;
  }

  .roadmap__step {
    flex-direction: row;
    text-align: left;
    align-items: flex-start;
    gap: 16px;
    padding: 24px 0;
  }

  .roadmap__icon {
    width: 56px;
    height: 56px;
    min-width: 56px;
  }

  .roadmap__icon svg {
    width: 28px;
    height: 28px;
  }

  .roadmap__connector {
    display: none;
  }

  .roadmap__content {
    padding: 0;
  }
}