:root {
  --silver-bright: #e8eaed;
  --silver-mid: #b0b8c1;
  --silver-dark: #6b7680;
  --silver-deep: #2a2f35;
  --bg: #0d0e10;
  --bg2: #111317;
  --chrome: #c9d1d9;
  --glow: rgba(180,200,220,0.18);
  --accent: #7eb8d4;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  font-family: 'Exo 2', sans-serif;
  color: var(--chrome);
  overflow-x: hidden;
}

#hero-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(180deg, rgba(13,14,16,0.95) 0%, transparent 100%);
  border-bottom: 1px solid rgba(180,200,220,0.08);
}
#hero-header .logo {
  font-family: 'Rajdhani', sans-serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 6px;
  color: var(--silver-bright);
  text-transform: uppercase;
}
#hero-header .logo span { color: var(--accent); }
#hero-header nav { display: flex; gap: 32px; }
#hero-header nav a {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--silver-mid);
  text-decoration: none;
  transition: color 0.3s;
}
#hero-header nav a:hover { color: var(--silver-bright); }

#scroll-container {
  position: relative;
  height: 600vh;
}

#scene-wrapper {
  position: sticky;
  top: 0;
  height: 100vh;
  width: 100%;
  overflow: hidden;
}

a-scene {
  width: 100% !important;
  height: 100% !important;
  position: absolute !important;
  top: 0; left: 0;
}


#overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 10;
}


#title-block {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  transition: opacity 0.6s, transform 0.6s;
}
#title-block .eyebrow {
  font-size: 10px;
  letter-spacing: 8px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
#title-block h1 {
  font-family: 'Rajdhani', sans-serif;
  font-size: clamp(52px, 8vw, 96px);
  font-weight: 700;
  letter-spacing: 12px;
  text-transform: uppercase;
  color: var(--silver-bright);
  text-shadow: 0 0 60px rgba(126,184,212,0.3);
  line-height: 1;
}
#title-block .sub {
  margin-top: 16px;
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--silver-dark);
  text-transform: uppercase;
}
#title-block .scroll-hint {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
#title-block .scroll-hint span {
  font-size: 9px;
  letter-spacing: 5px;
  color: var(--silver-dark);
}


.arrow-down {
  width: 1px; height: 40px;
  background: linear-gradient(180deg, var(--accent), transparent);
  animation: pulse-down 1.8s ease-in-out infinite;
}
@keyframes pulse-down {
  0%,100% { opacity: 0.3; transform: scaleY(1); }
  50%      { opacity: 1;   transform: scaleY(1.2); }
}


.info-panel {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 300px;
  opacity: 0;
  transition: opacity 0.5s ease, transform 0.5s ease;
  pointer-events: none;
}
.info-panel.left {
  left: 40px;
  transform: translateY(-50%) translateX(-40px);
}
.info-panel.right {
  right: 40px;
  transform: translateY(-50%) translateX(40px);
}
.info-panel.visible.left {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}
.info-panel.visible.right {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}
.info-panel .tag {
  font-size: 9px;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.info-panel h3 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--silver-bright);
  margin-bottom: 10px;
}
.info-panel p {
  font-size: 12px;
  line-height: 1.8;
  color: var(--silver-mid);
  font-weight: 300;
}


.info-panel .connector {
  display: flex;
  align-items: center;
  margin-bottom: 16px;
}
.info-panel.left .connector  { flex-direction: row; }
.info-panel.right .connector { flex-direction: row-reverse; }

.connector-line {
  height: 1px;
  flex: 1;
  max-width: 80px;
  background: linear-gradient(90deg, var(--accent), transparent);
}
.info-panel.right .connector-line {
  background: linear-gradient(270deg, var(--accent), transparent);
}
.connector-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  flex-shrink: 0;
  animation: dot-pulse 2s ease-in-out infinite;
}
@keyframes dot-pulse {
  0%,100% { box-shadow: 0 0 4px var(--accent); }
  50%      { box-shadow: 0 0 14px var(--accent), 0 0 30px rgba(126,184,212,0.4); }
}
.connector-arrow {
  font-size: 14px;
  color: var(--accent);
  flex-shrink: 0;
  margin: 0 4px;
}


#progress-bar {
  position: fixed;
  right: 30px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 200;
}
.progress-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--silver-dark);
  transition: background 0.4s, box-shadow 0.4s;
  cursor: pointer;
}
.progress-dot.active {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}


#metrics {
  position: absolute;
  bottom: 30px; left: 0; right: 0;
  display: flex;
  justify-content: center;
  gap: 60px;
  opacity: 0;
  transition: opacity 0.8s;
}
#metrics.visible { opacity: 1; }
.metric { text-align: center; }
.metric .val {
  font-family: 'Rajdhani', sans-serif;
  font-size: 32px;
  font-weight: 700;
  color: var(--silver-bright);
  line-height: 1;
}
.metric .unit {
  font-size: 9px;
  letter-spacing: 3px;
  color: var(--accent);
  text-transform: uppercase;
}
.metric .label {
  font-size: 9px;
  letter-spacing: 3px;
  color: var(--silver-dark);
  text-transform: uppercase;
  margin-top: 4px;
}


#arrows-svg {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s;
}
#arrows-svg.visible { opacity: 1; }


#scanlines {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  z-index: 5;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.03) 2px,
    rgba(0,0,0,0.03) 4px
  );
}


#section-label {
  position: absolute;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  letter-spacing: 6px;
  text-transform: uppercase;
  color: var(--silver-dark);
  opacity: 0;
  transition: opacity 0.5s;
}
#section-label.visible { opacity: 1; }


.corner {
  position: absolute;
  width: 40px; height: 40px;
  opacity: 0.4;
}
.corner.tl { top: 80px;  left: 20px;  border-top:    1px solid var(--silver-mid); border-left:   1px solid var(--silver-mid); }
.corner.tr { top: 80px;  right: 20px; border-top:    1px solid var(--silver-mid); border-right:  1px solid var(--silver-mid); }
.corner.bl { bottom: 20px; left: 20px;  border-bottom: 1px solid var(--silver-mid); border-left:   1px solid var(--silver-mid); }
.corner.br { bottom: 20px; right: 20px; border-bottom: 1px solid var(--silver-mid); border-right:  1px solid var(--silver-mid); }


#spec-panel {
  position: absolute;
  bottom: 80px;
  right: 40px;
  opacity: 0;
  transition: opacity 0.6s, transform 0.6s;
  transform: translateX(20px);
}
#spec-panel.visible {
  opacity: 1;
  transform: translateX(0);
}
.spec-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 8px;
}
.spec-key {
  font-size: 9px;
  letter-spacing: 3px;
  color: var(--silver-dark);
  text-transform: uppercase;
  width: 90px;
  text-align: right;
}
.spec-bar-wrap {
  width: 100px;
  height: 2px;
  background: rgba(180,200,220,0.1);
  border-radius: 2px;
  overflow: hidden;
}
.spec-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--silver-bright));
  transform-origin: left;
  animation: bar-fill 1.5s ease forwards;
}
@keyframes bar-fill {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}
.spec-val {
  font-family: 'Rajdhani', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--silver-bright);
  white-space: nowrap;
}


#end-section {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}