/* =====================================================
   Integration Pipeline – PLC/SCADA Data Integration Flow
   5 stages: Acquire → Normalize → Process → Visualize → Act
   Blue-Purple accent theme
   ===================================================== */

/* --- Container --- */
.intg {
  position: relative;
  overflow: hidden;
  background: var(--color-primary);
  padding: var(--space-12) 0 var(--space-10);
}

.intg__header {
  text-align: center;
  margin-bottom: var(--space-10);
  position: relative;
  z-index: 2;
}

/* --- Stage Wrapper --- */
.intg__stages {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-5);
  position: relative;
  z-index: 2;
}

/* --- Timeline bar --- */
.intg__timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-8);
  z-index: 2;
}

.intg__timeline::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 5%;
  width: 90%;
  height: 2px;
  background: rgba(255,255,255,0.08);
  z-index: 0;
}

.intg__timeline-progress {
  position: absolute;
  top: 20px;
  left: 5%;
  width: 0%;
  max-width: 90%;
  height: 2px;
  background: linear-gradient(90deg, #3B82F6, #8B5CF6);
  z-index: 1;
  transition: width 1.8s cubic-bezier(.4, 0, .2, 1);
}

/* --- Stage Card --- */
.intg__card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  min-height: 220px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(40px) scale(0.95);
  transition: opacity 0.7s cubic-bezier(.4,0,.2,1),
              transform 0.7s cubic-bezier(.4,0,.2,1),
              border-color 0.4s ease,
              box-shadow 0.4s ease;
}

.intg__card.active {
  opacity: 1;
  transform: translateY(0) scale(1);
  border-color: rgba(59,130,246,0.25);
  box-shadow: 0 0 40px rgba(59,130,246,0.08), inset 0 1px 0 rgba(255,255,255,0.05);
}

.intg__card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 100%, rgba(59,130,246,0.06), transparent 70%);
  opacity: 0;
  transition: opacity 0.6s ease;
}

.intg__card.active::before { opacity: 1; }

/* --- Label --- */
.intg__label {
  font-size: 10px;
  color: #3B82F6;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: var(--space-4);
  opacity: 0;
  transition: opacity 0.4s ease 0.3s;
}

.intg__card.active .intg__label { opacity: 1; }

/* ===== Stage 1: Acquire — Machine grid with protocol tags ===== */
.intg__machines {
  width: 100%;
  max-width: 150px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.intg__machine-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  background: rgba(59,130,246,0.04);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.05);
}

.intg__machine-icon {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.intg__machine-name {
  flex: 1;
  font-size: 10px;
  color: var(--color-white);
  font-weight: 600;
  font-family: 'Courier New', monospace;
}

.intg__machine-proto {
  font-size: 8px;
  padding: 1px 4px;
  border-radius: 3px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.intg__machine-proto--opcua { background: rgba(59,130,246,0.15); color: #3B82F6; }
.intg__machine-proto--modbus { background: rgba(6,182,212,0.15); color: #06B6D4; }
.intg__machine-proto--profinet { background: rgba(139,92,246,0.15); color: #8B5CF6; }
.intg__machine-proto--mqtt { background: rgba(16,185,129,0.15); color: #10B981; }

.intg__machine-status {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(59,130,246,0.3);
  flex-shrink: 0;
  transition: all 0.5s ease;
}

.intg__card.active .intg__machine-status {
  background: #10B981;
  box-shadow: 0 0 6px rgba(16,185,129,0.5);
}

.intg__card.active .intg__machine-row:nth-child(2) .intg__machine-status { transition-delay: 0.2s; }
.intg__card.active .intg__machine-row:nth-child(3) .intg__machine-status { transition-delay: 0.4s; }
.intg__card.active .intg__machine-row:nth-child(4) .intg__machine-status { transition-delay: 0.6s; }

/* ===== Stage 2: Normalize — Gateway conversion ===== */
.intg__gateway {
  width: 100%;
  max-width: 150px;
  text-align: center;
}

.intg__gw-box {
  background: rgba(6,182,212,0.06);
  border: 1px solid rgba(6,182,212,0.15);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  margin-bottom: 8px;
  position: relative;
}

.intg__gw-title {
  font-size: 10px;
  font-weight: 700;
  color: #06B6D4;
  font-family: 'Courier New', monospace;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin-bottom: 6px;
}

.intg__gw-flow {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.intg__gw-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: 9px;
  font-family: 'Courier New', monospace;
  color: var(--color-text-light);
}

.intg__gw-arrow {
  color: #06B6D4;
  font-weight: 700;
}

.intg__gw-tag {
  padding: 1px 4px;
  border-radius: 2px;
  font-size: 8px;
  font-weight: 600;
}

.intg__gw-tag--raw { background: rgba(247,148,29,0.15); color: var(--color-accent-orange); }
.intg__gw-tag--json { background: rgba(16,185,129,0.15); color: #10B981; }

.intg__gw-output {
  background: rgba(16,185,129,0.04);
  border: 1px solid rgba(16,185,129,0.12);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
  font-size: 8px;
  color: #10B981;
  font-family: 'Courier New', monospace;
  text-align: left;
  line-height: 1.4;
  opacity: 0;
  transform: translateY(6px);
  transition: all 0.4s ease 0.4s;
}

.intg__card.active .intg__gw-output {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Stage 3: Process — Edge compute with metrics ===== */
.intg__compute {
  width: 100%;
  max-width: 150px;
}

.intg__compute-header {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 10px;
  color: #10B981;
  font-family: 'Courier New', monospace;
  font-weight: 700;
  margin-bottom: 8px;
  padding-bottom: 4px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.intg__compute-metrics {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.intg__metric-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.intg__metric-label {
  font-size: 9px;
  color: var(--color-text-light);
  width: 40px;
  flex-shrink: 0;
}

.intg__metric-track {
  flex: 1;
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}

.intg__metric-fill {
  height: 100%;
  border-radius: 3px;
  width: 0%;
  transition: width 1.2s cubic-bezier(.4,0,.2,1);
}

.intg__card.active .intg__metric-fill { width: var(--fill-w); }
.intg__card.active .intg__metric-row:nth-child(2) .intg__metric-fill { transition-delay: 0.2s; }
.intg__card.active .intg__metric-row:nth-child(3) .intg__metric-fill { transition-delay: 0.4s; }
.intg__card.active .intg__metric-row:nth-child(4) .intg__metric-fill { transition-delay: 0.6s; }

.intg__metric-val {
  font-size: 10px;
  font-weight: 700;
  font-family: 'Courier New', monospace;
  color: var(--color-white);
  width: 36px;
  text-align: right;
}

/* ===== Stage 4: Visualize — Dashboard ===== */
.intg__dashboard {
  width: 100%;
  max-width: 160px;
}

.intg__dash-header {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 10px;
  color: #8B5CF6;
  font-family: 'Courier New', monospace;
  font-weight: 700;
  margin-bottom: 8px;
  padding-bottom: 4px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.intg__dash-kpis {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-bottom: 8px;
}

.intg__dash-kpi {
  text-align: center;
  padding: 6px 4px;
  background: rgba(139,92,246,0.05);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.04);
}

.intg__dash-kpi-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-white);
  font-family: 'Courier New', monospace;
}

.intg__dash-kpi-label {
  font-size: 9px;
  color: var(--color-text-light);
  margin-top: 2px;
}

.intg__dash-chart {
  width: 100%;
  height: 28px;
  opacity: 0;
  transition: opacity 0.5s ease 0.4s;
}

.intg__card.active .intg__dash-chart { opacity: 1; }

.intg__machine-bar {
  display: flex;
  gap: 3px;
  margin-top: 6px;
}

.intg__machine-dot {
  flex: 1;
  height: 14px;
  border-radius: 3px;
  background: rgba(255,255,255,0.06);
  position: relative;
  overflow: hidden;
}

.intg__machine-dot::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 3px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.8s ease;
}

.intg__machine-dot--run::after { background: rgba(16,185,129,0.5); }
.intg__machine-dot--idle::after { background: rgba(245,158,11,0.5); }
.intg__machine-dot--down::after { background: rgba(239,68,68,0.5); }

.intg__card.active .intg__machine-dot::after { transform: scaleX(1); }
.intg__card.active .intg__machine-dot:nth-child(2)::after { transition-delay: 0.1s; }
.intg__card.active .intg__machine-dot:nth-child(3)::after { transition-delay: 0.2s; }
.intg__card.active .intg__machine-dot:nth-child(4)::after { transition-delay: 0.3s; }
.intg__card.active .intg__machine-dot:nth-child(5)::after { transition-delay: 0.4s; }

.intg__machine-bar-legend {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 4px;
  font-size: 8px;
  color: var(--color-text-light);
}

.intg__legend-dot {
  width: 6px;
  height: 6px;
  border-radius: 2px;
  display: inline-block;
  margin-right: 2px;
  vertical-align: middle;
}

.intg__legend-dot--run { background: rgba(16,185,129,0.7); }
.intg__legend-dot--idle { background: rgba(245,158,11,0.7); }
.intg__legend-dot--down { background: rgba(239,68,68,0.7); }

/* ===== Stage 5: Act — Alerts & Responses ===== */
.intg__alerts {
  width: 100%;
  max-width: 150px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.intg__alert {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.06);
  opacity: 0;
  transform: translateX(-10px);
  transition: all 0.4s ease;
}

.intg__card.active .intg__alert:nth-child(1) { opacity: 1; transform: translateX(0); transition-delay: 0.1s; }
.intg__card.active .intg__alert:nth-child(2) { opacity: 1; transform: translateX(0); transition-delay: 0.3s; }
.intg__card.active .intg__alert:nth-child(3) { opacity: 1; transform: translateX(0); transition-delay: 0.5s; }

.intg__alert--critical {
  background: rgba(239,68,68,0.06);
  border-color: rgba(239,68,68,0.2);
}

.intg__alert--warning {
  background: rgba(245,158,11,0.06);
  border-color: rgba(245,158,11,0.2);
}

.intg__alert--predictive {
  background: rgba(139,92,246,0.06);
  border-color: rgba(139,92,246,0.2);
}

.intg__alert-badge {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 10px;
  font-weight: 700;
}

.intg__alert--critical .intg__alert-badge { background: rgba(239,68,68,0.15); color: #EF4444; }
.intg__alert--warning .intg__alert-badge { background: rgba(245,158,11,0.15); color: #F59E0B; }
.intg__alert--predictive .intg__alert-badge { background: rgba(139,92,246,0.15); color: #8B5CF6; }

.intg__alert-content {
  flex: 1;
}

.intg__alert-title {
  font-size: 10px;
  font-weight: 700;
  color: var(--color-white);
  display: block;
}

.intg__alert-desc {
  font-size: 9px;
  color: var(--color-text-light);
  line-height: 1.3;
  margin-top: 1px;
}

.intg__action-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: rgba(59,130,246,0.06);
  border: 1px solid rgba(59,130,246,0.15);
  border-radius: var(--radius-sm);
  font-size: 9px;
  font-weight: 600;
  color: #3B82F6;
  font-family: 'Courier New', monospace;
  opacity: 0;
  transition: opacity 0.4s ease 0.7s;
}

.intg__card.active .intg__action-bar { opacity: 1; }

.intg__action-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #3B82F6;
  animation: none;
}

.intg__card.active .intg__action-dot { animation: intgPulse 1.5s infinite; }

@keyframes intgPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* --- Step (timeline dot + label) --- */
.intg__step {
  text-align: center;
  position: relative;
  z-index: 2;
}

.intg__step-dot {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary, #0A1628);
  border: 2px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-3);
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-bold);
  color: var(--color-text-light);
  transition: all 0.5s cubic-bezier(.4,0,.2,1);
}

.intg__step.active .intg__step-dot {
  background: #1a2744;
  border-color: #3B82F6;
  color: #3B82F6;
  box-shadow: 0 0 16px rgba(59,130,246,0.3);
}

.intg__step-title {
  font-size: var(--fs-caption);
  color: var(--color-text-light);
  transition: color 0.4s ease;
}

.intg__step.active .intg__step-title {
  color: #3B82F6;
}

/* --- Ambient --- */
.intg__ambient {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.intg__ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.08;
}

.intg__ambient-orb--1 {
  width: 400px; height: 400px;
  background: #3B82F6;
  top: -100px; left: -100px;
}

.intg__ambient-orb--2 {
  width: 300px; height: 300px;
  background: #8B5CF6;
  bottom: -80px; right: -60px;
  opacity: 0.05;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .intg__stages,
  .intg__timeline {
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-3);
  }
  .intg__card {
    min-height: 180px;
    padding: var(--space-3);
  }
}

@media (max-width: 768px) {
  .intg__stages {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  .intg__timeline {
    display: none;
  }
  .intg__card {
    min-height: 160px;
    flex-direction: row;
    gap: var(--space-4);
    padding: var(--space-5);
  }
  .intg__card::after {
    position: absolute;
    top: var(--space-2);
    left: var(--space-3);
    font-size: 10px;
    color: #3B82F6;
    font-weight: 700;
    letter-spacing: 0.1em;
  }
  .intg__card:nth-child(1)::after { content: 'STEP 01'; }
  .intg__card:nth-child(2)::after { content: 'STEP 02'; }
  .intg__card:nth-child(3)::after { content: 'STEP 03'; }
  .intg__card:nth-child(4)::after { content: 'STEP 04'; }
  .intg__card:nth-child(5)::after { content: 'STEP 05'; }

  .intg__card {
    opacity: 0;
    transform: translateY(30px) scale(0.98);
  }
  .intg__card.active {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}