:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #16161f;
  --fg: #e8e8ed;
  --fg-muted: #8a8a9a;
  --accent: #00e599;
  --accent-dim: rgba(0, 229, 153, 0.12);
  --accent-glow: rgba(0, 229, 153, 0.25);
  --border: rgba(255, 255, 255, 0.06);
  --radius: 12px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

/* === HEADER === */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--fg);
  text-decoration: none;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.header-nav a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.header-nav a:hover {
  color: var(--fg);
}

.header-cta {
  color: var(--accent) !important;
  font-weight: 500;
  border: 1px solid var(--accent);
  padding: 8px 20px;
  border-radius: 100px;
  transition: background 0.2s ease, color 0.2s ease !important;
}

.header-cta:hover {
  background: var(--accent);
  color: var(--bg) !important;
}

/* === HERO === */
.hero {
  min-height: 85vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 140px 48px 80px;
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 32px;
  width: fit-content;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  max-width: 720px;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 36px;
}

.hero-btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--bg);
  background: var(--accent);
  padding: 14px 36px;
  border-radius: 100px;
  text-decoration: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.hero-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.hero-accent {
  position: absolute;
  top: 0;
  right: 0;
  width: 40%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
}

.volt-line {
  position: absolute;
  width: 1px;
  height: 100%;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    var(--accent-glow) 30%,
    var(--accent) 50%,
    var(--accent-glow) 70%,
    transparent 100%
  );
  opacity: 0.3;
  animation: voltPulse 4s ease-in-out infinite;
}

.volt-line:nth-child(1) { right: 30%; animation-delay: 0s; }
.volt-line:nth-child(2) { right: 55%; animation-delay: 1.3s; opacity: 0.15; }
.volt-line:nth-child(3) { right: 80%; animation-delay: 2.6s; opacity: 0.1; }

@keyframes voltPulse {
  0%, 100% { opacity: 0.08; }
  50% { opacity: 0.35; }
}

/* === SECTION TAGS === */
.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 16px;
}

/* === VEHICLES === */
.vehicles {
  padding: 100px 48px;
  max-width: 1200px;
  margin: 0 auto;
}

.vehicles-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

.vehicles-intro {
  color: var(--fg-muted);
  font-size: 1.05rem;
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 56px;
}

.vehicle-categories {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.vehicle-cat {
  padding: 40px 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.3s ease;
}

.vehicle-cat:hover {
  border-color: rgba(0, 229, 153, 0.15);
}

.cat-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--bg);
  background: var(--accent);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.vehicle-cat h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.cat-desc {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 24px;
  max-width: 560px;
}

.vehicle-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.vehicle-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
}

.vehicle-card h4 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 8px;
}

.vehicle-card p {
  color: var(--fg-muted);
  font-size: 0.9rem;
  line-height: 1.65;
}

.vehicles-cta {
  margin-top: 56px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* === BUTTONS === */
.btn-primary {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--bg);
  background: var(--accent);
  padding: 14px 32px;
  border-radius: 100px;
  text-decoration: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent);
  padding: 14px 32px;
  border-radius: 100px;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
}

.btn-secondary:hover {
  background: var(--accent);
  color: var(--bg);
}

/* === FEATURES === */
.features {
  padding: 100px 48px;
  max-width: 1200px;
  margin: 0 auto;
}

.features-header {
  margin-bottom: 64px;
}

.features-header h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
  transition: border-color 0.3s ease;
}

.feature-card:hover {
  border-color: rgba(0, 229, 153, 0.2);
}

.feature-card--large {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(0, 229, 153, 0.04) 100%);
}

.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 20px;
  display: block;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* === METRICS === */
.metrics {
  padding: 100px 48px;
  background: var(--bg-elevated);
}

.metrics-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.metrics h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 56px;
  line-height: 1.2;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.metric-value {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.metric-label {
  color: var(--fg-muted);
  font-size: 0.9rem;
}

/* === CLOSING === */
.closing {
  padding: 120px 48px;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
}

.closing p {
  color: var(--fg-muted);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

.closing-btn {
  margin-top: 36px;
}

/* === FOOTER === */
.site-footer {
  padding: 40px 48px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
}

.footer-tagline {
  color: var(--fg-muted);
  font-size: 0.8rem;
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 24px;
}

.footer-link {
  color: var(--fg-muted);
  font-size: 0.85rem;
}

.footer-sep {
  color: var(--fg-muted);
  font-size: 0.8rem;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .header-inner {
    padding: 14px 24px;
  }

  .header-nav {
    gap: 16px;
  }

  .header-nav a:not(.header-cta) {
    display: none;
  }

  .hero {
    padding: 120px 24px 60px;
    min-height: 70vh;
  }

  .hero-accent { display: none; }

  .vehicles {
    padding: 60px 24px;
  }

  .vehicle-cat {
    padding: 28px 24px;
  }

  .vehicle-cards {
    grid-template-columns: 1fr;
  }

  .vehicles-cta {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }

  .features { padding: 60px 24px; }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .feature-card--large {
    grid-column: 1;
  }

  .feature-card {
    padding: 28px 24px;
  }

  .metrics { padding: 60px 24px; }

  .metric-row {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .metric-value { font-size: 2.5rem; }

  .closing { padding: 80px 24px; }

  .site-footer { padding: 32px 24px; }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer-left {
    align-items: center;
  }

  .footer-right {
    flex-direction: column;
    gap: 8px;
  }
}