/* ============================================================
   Tech Demo Modules — approach.html
   Remote Sensing Workflow / GIS Layer Demo / Satellite Sources
   ============================================================ */

/* Section wrapper */
.tech-section {
  padding: 64px 80px;
  max-width: 1100px;
  margin: 0 auto;
}
.tech-section .section-label {
  font-family: 'DM Sans', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: #c8a050;
  margin-bottom: 10px;
}
.tech-section h2 {
  font-size: 30px;
  font-weight: 400;
  color: #0F1E2E;
  margin-bottom: 8px;
}
.tech-section .section-sub {
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  color: #555;
  line-height: 1.85;
  max-width: 680px;
  margin-bottom: 48px;
}

/* ---- MODULE CONTAINER ---- */
.tech-module {
  background: linear-gradient(160deg, #0a0f1a 0%, #111827 50%, #1a1f2e 100%);
  border-radius: 6px;
  border: 1px solid rgba(200, 160, 80, .12);
  padding: 40px;
  margin-bottom: 32px;
  position: relative;
  overflow: hidden;
}
.tech-module::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, #c8a050 30%, #c8a050 70%, transparent);
  opacity: .5;
}
.tech-module-title {
  font-family: 'DM Sans', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: #c8a050;
  margin-bottom: 8px;
}
.tech-module h3 {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 24px;
  font-weight: 400;
  color: #fff;
  margin-bottom: 6px;
}
.tech-module .module-desc {
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  color: #7a8fa0;
  line-height: 1.7;
  max-width: 600px;
  margin-bottom: 28px;
}

/* ============================================================
   MODULE 1: Data Fusion Funnel
   ============================================================ */
.funnel-wrap {
  position: relative;
  padding: 10px 0 0;
}

/* Flow connector between tiers */
.funnel-flow {
  width: 2px;
  height: 28px;
  margin: 0 auto;
  background: linear-gradient(180deg, rgba(90,143,170,.3), rgba(200,160,80,.3));
  position: relative;
}
.funnel-flow::before {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid rgba(200,160,80,.3);
}

/* Tier layout */
.funnel-tier {
  position: relative;
  z-index: 1;
  text-align: center;
  margin-bottom: 0;
}
.funnel-tier-label {
  font-family: 'DM Sans', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: #c8a050;
  margin-bottom: 16px;
}

/* Tier 1: Data sources — wide row */
.funnel-sources {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.funnel-source {
  background: rgba(90, 143, 170, .08);
  border: 1px solid rgba(90, 143, 170, .2);
  border-radius: 4px;
  padding: 18px 20px 14px;
  width: 130px;
  cursor: pointer;
  transition: all .3s ease;
  text-align: center;
}
.funnel-source:hover,
.funnel-source.active {
  background: rgba(90, 143, 170, .15);
  border-color: rgba(90, 143, 170, .45);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, .3);
}
.funnel-source-icon {
  font-size: 24px;
  margin-bottom: 8px;
}
.funnel-source-name {
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: #c0d0dd;
  line-height: 1.4;
}

/* Tooltip */
.funnel-tooltip {
  position: absolute;
  z-index: 5;
  background: rgba(10, 15, 26, .94);
  border: 1px solid rgba(200, 160, 80, .25);
  border-radius: 4px;
  padding: 10px 14px;
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  color: #94a8ba;
  line-height: 1.6;
  max-width: 280px;
  transform: translate(-50%, 0);
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease;
  white-space: normal;
}
.funnel-tooltip.visible {
  opacity: 1;
}

/* Tier 2: Processing — narrower row */
.funnel-tier-2 {
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}
.funnel-processes {
  display: flex;
  justify-content: center;
  gap: 16px;
}
.funnel-process {
  background: rgba(160, 140, 90, .08);
  border: 1px solid rgba(160, 140, 90, .2);
  border-radius: 4px;
  padding: 16px 24px;
  flex: 1;
  max-width: 200px;
}
.funnel-process-name {
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: #d0c8a0;
}

/* Tier 3: Target — single glowing node */
.funnel-tier-3 {
  max-width: 380px;
  margin-left: auto;
  margin-right: auto;
}
.funnel-target {
  position: relative;
  background: rgba(200, 160, 80, .1);
  border: 1.5px solid rgba(200, 160, 80, .4);
  border-radius: 6px;
  padding: 24px 28px;
  cursor: pointer;
  transition: all .3s ease;
}
.funnel-target:hover {
  background: rgba(200, 160, 80, .16);
  border-color: rgba(200, 160, 80, .6);
  box-shadow: 0 0 30px rgba(200, 160, 80, .15);
}
.funnel-target-glow {
  position: absolute;
  top: -4px; right: -4px; bottom: -4px; left: -4px;
  border-radius: 8px;
  border: 1px solid rgba(200, 160, 80, .2);
  animation: funnel-glow 2.5s ease infinite;
  pointer-events: none;
}
@keyframes funnel-glow {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.02); }
}
.funnel-target-name {
  font-family: 'DM Sans', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: #c8a050;
  margin-bottom: 6px;
}
.funnel-target-sub {
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  color: #94a8ba;
  line-height: 1.5;
}

/* Detail panel (click target) */
.funnel-detail-panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height .4s ease, opacity .3s ease, margin .3s ease;
  margin-top: 0;
}
.funnel-detail-panel.open {
  max-height: 120px;
  opacity: 1;
  margin-top: 16px;
}
.funnel-detail-text {
  padding: 16px 20px;
  background: rgba(200, 160, 80, .06);
  border: 1px solid rgba(200, 160, 80, .15);
  border-radius: 4px;
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  color: #94a8ba;
  line-height: 1.7;
}

/* ============================================================
   MODULE 2: Interactive GIS Layer Demo
   ============================================================ */
.gis-container {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 24px;
  align-items: start;
}
.gis-canvas-wrap {
  position: relative;
  background: #070b12;
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: 4px;
  overflow: hidden;
  aspect-ratio: 4/3;
}
.gis-canvas-wrap canvas {
  width: 100%;
  height: 100%;
  display: block;
}
.gis-canvas-wrap .gis-cursor-info {
  position: absolute;
  bottom: 12px;
  left: 12px;
  font-family: 'DM Sans', monospace;
  font-size: 11px;
  color: #7a8fa0;
  background: rgba(10, 15, 26, .85);
  padding: 4px 10px;
  border-radius: 3px;
  pointer-events: none;
}
.gis-canvas-wrap .gis-scale {
  position: absolute;
  bottom: 12px;
  right: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: 'DM Sans', sans-serif;
  font-size: 10px;
  color: #7a8fa0;
}
.gis-scale-bar {
  width: 48px;
  height: 3px;
  background: #7a8fa0;
  position: relative;
}
.gis-scale-bar::before, .gis-scale-bar::after {
  content: '';
  position: absolute;
  width: 1px;
  height: 7px;
  background: #7a8fa0;
  top: -2px;
}
.gis-scale-bar::before { left: 0; }
.gis-scale-bar::after { right: 0; }

/* Layer panel */
.gis-panel {
  background: rgba(255, 255, 255, .03);
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: 4px;
  padding: 20px;
}
.gis-panel-title {
  font-family: 'DM Sans', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #c8a050;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(200, 160, 80, .15);
}
.gis-layer {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .04);
  cursor: pointer;
  transition: background .2s;
}
.gis-layer:last-child { border-bottom: none; }
.gis-layer:hover { background: rgba(255, 255, 255, .02); }
.gis-layer-toggle {
  width: 32px;
  height: 18px;
  border-radius: 9px;
  background: rgba(255, 255, 255, .1);
  position: relative;
  flex-shrink: 0;
  transition: background .3s;
}
.gis-layer-toggle::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #4a5a6a;
  top: 2px;
  left: 2px;
  transition: all .3s;
}
.gis-layer.on .gis-layer-toggle {
  background: rgba(200, 160, 80, .3);
}
.gis-layer.on .gis-layer-toggle::after {
  background: #c8a050;
  left: 16px;
}
.gis-layer-swatch {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  flex-shrink: 0;
}
.gis-layer-name {
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  color: #94a8ba;
  transition: color .3s;
}
.gis-layer.on .gis-layer-name {
  color: #e8e0d0;
}

/* Auto-demo button */
.gis-auto-btn {
  display: block;
  width: 100%;
  margin-top: 16px;
  padding: 10px;
  background: rgba(200, 160, 80, .1);
  border: 1px solid rgba(200, 160, 80, .2);
  border-radius: 4px;
  color: #c8a050;
  font-family: 'DM Sans', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all .3s;
}
.gis-auto-btn:hover {
  background: rgba(200, 160, 80, .2);
  border-color: rgba(200, 160, 80, .4);
}
.gis-auto-btn.running {
  background: rgba(200, 160, 80, .25);
  color: #fff;
}

/* Legend gradient bar */
.gis-legend {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, .06);
}
.gis-legend-title {
  font-family: 'DM Sans', sans-serif;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #7a8fa0;
  margin-bottom: 8px;
}
.gis-legend-bar {
  height: 8px;
  border-radius: 4px;
  margin-bottom: 4px;
}
.gis-legend-labels {
  display: flex;
  justify-content: space-between;
  font-family: 'DM Sans', sans-serif;
  font-size: 9px;
  color: #5a6a7a;
}

/* ============================================================
   MODULE 3: Satellite Data Sources
   ============================================================ */
.sat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.sat-card {
  background: rgba(255, 255, 255, .03);
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: 4px;
  padding: 20px;
  cursor: pointer;
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
}
.sat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--sat-accent, #c8a050);
  opacity: .4;
  transition: opacity .3s;
}
.sat-card:hover::before,
.sat-card.expanded::before {
  opacity: 1;
}
.sat-card:hover {
  background: rgba(255, 255, 255, .05);
  border-color: rgba(200, 160, 80, .2);
  transform: translateY(-2px);
}
.sat-card .sat-name {
  font-family: 'DM Sans', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: #e8e0d0;
  margin-bottom: 2px;
}
.sat-card .sat-operator {
  font-family: 'DM Sans', sans-serif;
  font-size: 11px;
  color: #5a6a7a;
  margin-bottom: 10px;
}
.sat-card .sat-summary {
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  color: #7a8fa0;
  line-height: 1.6;
  margin-bottom: 10px;
}
.sat-card .sat-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 0;
  transition: margin-bottom .3s;
}
.sat-card.expanded .sat-tags {
  margin-bottom: 14px;
}
.sat-tag {
  font-family: 'DM Sans', sans-serif;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .5px;
  padding: 3px 8px;
  border-radius: 3px;
  background: rgba(200, 160, 80, .1);
  color: #c8a050;
}
.sat-expand {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: 'DM Sans', sans-serif;
  font-size: 11px;
  color: #c8a050;
  margin-top: 10px;
  opacity: .6;
  transition: opacity .3s;
}
.sat-card:hover .sat-expand { opacity: 1; }
.sat-expand-arrow {
  display: inline-block;
  transition: transform .3s;
  font-size: 10px;
}
.sat-card.expanded .sat-expand-arrow {
  transform: rotate(90deg);
}

/* Expanded detail */
.sat-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, opacity .3s;
  opacity: 0;
}
.sat-card.expanded .sat-detail {
  max-height: 400px;
  opacity: 1;
}
.sat-detail-inner {
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, .06);
}
.sat-spec {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .03);
}
.sat-spec:last-child { border-bottom: none; }
.sat-spec-label {
  font-family: 'DM Sans', sans-serif;
  font-size: 11px;
  color: #5a6a7a;
}
.sat-spec-value {
  font-family: 'DM Sans', sans-serif;
  font-size: 11px;
  font-weight: 600;
  color: #94a8ba;
}
.sat-use-case {
  margin-top: 10px;
  padding: 10px 12px;
  background: rgba(200, 160, 80, .06);
  border-radius: 3px;
  border-left: 2px solid rgba(200, 160, 80, .3);
}
.sat-use-case-title {
  font-family: 'DM Sans', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #c8a050;
  margin-bottom: 4px;
}
.sat-use-case-text {
  font-family: 'DM Sans', sans-serif;
  font-size: 11px;
  color: #7a8fa0;
  line-height: 1.6;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .tech-section {
    padding: 40px 24px;
  }
  .tech-module {
    padding: 24px 20px;
  }
  .funnel-sources {
    gap: 10px;
  }
  .funnel-source {
    width: 100px;
    padding: 12px 10px 10px;
  }
  .funnel-source-name {
    font-size: 11px;
  }
  .funnel-processes {
    flex-direction: column;
    align-items: center;
  }
  .funnel-process {
    max-width: 100%;
    width: 100%;
  }
  .gis-container {
    grid-template-columns: 1fr;
  }
  .gis-canvas-wrap {
    aspect-ratio: 1/1;
  }
  .sat-grid {
    grid-template-columns: 1fr;
  }
  #satModule > div:last-child {
    grid-template-columns: 1fr !important;
  }
}
@media (max-width: 480px) {
  .funnel-sources {
    flex-direction: column;
    align-items: center;
  }
  .funnel-source {
    width: 100%;
    max-width: 200px;
  }
}