:root {
  --bg: #0e0b17;
  --bg-panel: #171224;
  --card: #221c30;
  --card-hi: #2b2440;
  --text: #f4f1f8;
  --text-dim: #a89fc2;
  --text-faint: #766d90;
  --accent-a: #d15fe0;
  --accent-b: #6a6ff2;
  --line: rgba(255,255,255,0.08);
  --radius-lg: 22px;
  --radius-md: 14px;
  --gradient: linear-gradient(135deg, var(--accent-a), var(--accent-b));
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(700px 500px at 85% -5%, rgba(209,95,224,0.16), transparent 60%),
    radial-gradient(600px 500px at 10% 10%, rgba(106,111,242,0.14), transparent 60%);
}

a { color: inherit; text-decoration: none; }

h1, h2, h3, .display {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
}

.mono {
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.02em;
}

/* ---------- Nav ---------- */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px clamp(20px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(14,11,23,0.75);
  backdrop-filter: blur(14px);
  z-index: 50;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 15px;
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: 34px;
  font-size: 14px;
  color: var(--text-dim);
}

.nav-links a:hover { color: var(--text); }

.pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 20px;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: border-color .2s, background .2s;
}

.pill:hover { border-color: rgba(255,255,255,0.25); background: rgba(255,255,255,0.04); }

.pill.solid {
  background: var(--gradient);
  color: #120d1c;
  font-weight: 600;
  border: none;
}

@media (max-width: 760px) {
  .nav-links { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
  padding: clamp(40px, 6vw, 88px) clamp(20px, 5vw, 64px) 20px;
  max-width: 1360px;
  margin: 0 auto;
}

.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--accent-a);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 18px;
  display: block;
}

.hero h1 {
  font-size: clamp(38px, 5.4vw, 64px);
  line-height: 1.03;
  text-transform: uppercase;
}

.hero h1 .grad {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lede {
  margin-top: 20px;
  color: var(--text-dim);
  font-size: 17px;
  max-width: 46ch;
}

.hero-cta {
  margin-top: 34px;
  display: flex;
  gap: 16px;
  align-items: center;
}

.hero-cta .pill { padding: 14px 26px; font-size: 14px; }

.hero-stage {
  position: relative;
  aspect-ratio: 1 / 1;
}

.hero-stage::before {
  content: "";
  position: absolute;
  inset: -18%;
  z-index: 0;
  background:
    radial-gradient(circle at 50% 48%, rgba(209,95,224,0.55), transparent 45%),
    radial-gradient(circle at 55% 55%, rgba(106,111,242,0.4), transparent 60%);
  filter: blur(38px);
  pointer-events: none;
}

.hero-stage model-viewer {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  --poster-color: transparent;
  filter: drop-shadow(0 0 40px rgba(209,95,224,0.35));
}

.hero-tag {
  position: relative;
  z-index: 2;
  display: block;
  text-align: center;
  margin-top: -10px;
  font-size: 11px;
  color: var(--text-faint);
}

.hero-switch {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 14px;
}

.hero-switch button {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-dim);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 14px;
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}

.hero-switch button:hover {
  color: var(--text);
  border-color: rgba(255,255,255,0.25);
}

.hero-switch button.active {
  color: #14101f;
  background: var(--gradient);
  border-color: transparent;
}

/* ---------- Cards ---------- */
.cards {
  max-width: 1360px;
  margin: 30px auto 0;
  padding: 0 clamp(20px, 5vw, 64px);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card {
  background: linear-gradient(160deg, var(--card-hi), var(--card));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  position: relative;
  display: block;
  transition: transform .25s ease, border-color .25s ease;
  min-height: 168px;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(209,95,224,0.4);
}

.card .arrow {
  position: absolute;
  top: 22px;
  right: 22px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .25s ease, background .25s ease, border-color .25s ease;
}

.card:hover .arrow {
  transform: translate(3px, -3px);
  background: var(--gradient);
  border-color: transparent;
}

.card:hover .arrow svg path { stroke: #14101f; }

.card h3 {
  font-size: 19px;
  max-width: 12ch;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.card p {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.5;
  margin: 0;
  max-width: 30ch;
}

.card .part-tag {
  margin-top: 14px;
  display: inline-block;
  font-size: 11px;
  color: var(--accent-a);
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
}

/* ---------- Build grid (parts catalog) ---------- */
.build-section {
  max-width: 1360px;
  margin: 70px auto 0;
  padding: 0 clamp(20px, 5vw, 64px);
}

.build-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 24px;
  gap: 16px;
  flex-wrap: wrap;
}

.build-head h2 {
  font-size: clamp(24px, 3vw, 32px);
  text-transform: uppercase;
}

.build-head p {
  color: var(--text-dim);
  font-size: 14px;
  margin: 0;
}

.parts-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.part-card {
  display: block;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 18px;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.part-card:hover {
  transform: translateY(-3px);
  border-color: rgba(209,95,224,0.4);
  background: rgba(255,255,255,0.04);
}

.part-card .idx {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-faint);
  display: block;
  margin-bottom: 10px;
}

.part-card h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 15px;
  margin: 0 0 6px;
  text-transform: uppercase;
}

.part-card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 12.5px;
  line-height: 1.4;
}

@media (max-width: 900px) {
  .parts-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .parts-grid { grid-template-columns: 1fr; }
}

/* ---------- Model hotspots ---------- */
.hotspot {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  padding: 0;
  background: #fff;
  box-shadow: 0 0 0 4px rgba(255,255,255,0.15), 0 0 12px rgba(255,255,255,0.8);
  cursor: pointer;
}

.hotspot-line {
  position: absolute;
  left: 9px;
  top: 50%;
  width: 46px;
  height: 1px;
  background: linear-gradient(to right, rgba(255,255,255,0.95), rgba(255,255,255,0.15));
  transform: translateY(-50%);
  pointer-events: none;
}

.hotspot-annotation {
  position: absolute;
  left: 60px;
  top: 50%;
  transform: translateY(-50%);
  white-space: nowrap;
  background: rgba(15,11,23,0.9);
  border: 1px solid var(--line);
  padding: 6px 11px;
  border-radius: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text);
  pointer-events: none;
}

/* ---------- Career sections ---------- */
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.timeline-item {
  border-left: 2px solid var(--accent-a);
  padding-left: 16px;
}

.timeline-item .time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent-a);
  display: block;
  margin-bottom: 8px;
}

.timeline-item h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 15px;
  margin: 0 0 6px;
  text-transform: uppercase;
}

.timeline-item p {
  margin: 0;
  color: var(--text-dim);
  font-size: 12.5px;
  line-height: 1.5;
}

@media (max-width: 900px) {
  .timeline { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .timeline { grid-template-columns: 1fr; }
}

/* ---------- Footer credit ---------- */
.credit {
  max-width: 1360px;
  margin: 40px auto 60px;
  padding: 0 clamp(20px, 5vw, 64px);
  text-align: right;
  color: var(--text-faint);
  font-size: 12px;
}

/* ---------- Detail pages ---------- */
.detail-wrap {
  max-width: 1360px;
  margin: 0 auto;
  padding: clamp(30px, 5vw, 60px) clamp(20px, 5vw, 64px) 80px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  font-size: 14px;
  margin-bottom: 30px;
}
.back-link:hover { color: var(--text); }

.detail-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 48px;
  align-items: center;
}

.detail-stage {
  position: relative;
  aspect-ratio: 4 / 3.4;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 50% 45%, rgba(209,95,224,0.16), rgba(106,111,242,0.05) 55%, transparent 78%);
  border: 1px solid var(--line);
}

.detail-stage model-viewer { width: 100%; height: 100%; }

.stage-hint {
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  color: var(--text-faint);
  display: flex;
  align-items: center;
  gap: 6px;
}

.part-label {
  font-size: 12px;
  color: var(--accent-a);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 14px;
  display: block;
}

.detail-title {
  font-size: clamp(30px, 4vw, 44px);
  text-transform: uppercase;
  line-height: 1.05;
  margin-bottom: 18px;
}

.detail-desc {
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.65;
  max-width: 52ch;
  margin-bottom: 30px;
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.spec {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  background: rgba(255,255,255,0.02);
}

.spec .k {
  font-size: 10.5px;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 6px;
}

.spec .v {
  font-size: 14px;
  font-family: 'JetBrains Mono', monospace;
}

@media (max-width: 900px) {
  .detail-grid { grid-template-columns: 1fr; }
  .spec-grid { grid-template-columns: repeat(2, 1fr); }
}

.nav-footer {
  display: flex;
  justify-content: space-between;
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--text-dim);
}
.nav-footer a:hover { color: var(--text); }