:root {
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --background: 222 47% 6%;
  --foreground: 210 40% 98%;
  --card: 222 38% 10%;
  --card-foreground: 210 40% 98%;
  --popover: 222 38% 10%;
  --popover-foreground: 210 40% 98%;
  --primary: 0 84% 58%;
  --primary-foreground: 0 0% 100%;
  --secondary: 217 33% 17%;
  --secondary-foreground: 210 40% 98%;
  --muted: 217 33% 17%;
  --muted-foreground: 215 20% 72%;
  --accent: 38 92% 56%;
  --accent-foreground: 222 47% 8%;
  --destructive: 0 84% 60%;
  --destructive-foreground: 0 0% 100%;
  --success: 142 70% 45%;
  --success-foreground: 0 0% 100%;
  --warning: 38 92% 56%;
  --warning-foreground: 222 47% 8%;
  --info: 199 89% 48%;
  --info-foreground: 0 0% 100%;
  --border: 217 24% 24%;
  --input: 217 24% 24%;
  --ring: 0 84% 58%;
  --radius: 0.625rem;
  --shadow-sm: 0 1px 2px hsl(var(--foreground) / 0.05);
  --shadow-md: 0 4px 12px hsl(var(--foreground) / 0.08);
  --shadow-lg: 0 12px 32px hsl(var(--foreground) / 0.12);
  --shadow-elegant: 0 24px 80px hsl(var(--primary) / 0.22), 0 10px 30px hsl(var(--foreground) / 0.14);
  --shadow-3d: 0 1px 0 hsl(var(--foreground) / 0.09), 0 12px 0 hsl(var(--background) / 0.52), 0 28px 70px hsl(var(--primary) / 0.18);
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

html.dark {
  --background: 222 47% 6%;
  --foreground: 210 40% 98%;
  --card: 222 38% 10%;
  --card-foreground: 210 40% 98%;
  --popover: 222 38% 10%;
  --popover-foreground: 210 40% 98%;
  --primary: 0 84% 58%;
  --primary-foreground: 0 0% 100%;
  --secondary: 217 33% 17%;
  --secondary-foreground: 210 40% 98%;
  --muted: 217 33% 17%;
  --muted-foreground: 215 20% 72%;
  --accent: 38 92% 56%;
  --accent-foreground: 222 47% 8%;
  --destructive: 0 84% 60%;
  --destructive-foreground: 0 0% 100%;
  --success: 142 70% 45%;
  --success-foreground: 0 0% 100%;
  --warning: 38 92% 56%;
  --warning-foreground: 222 47% 8%;
  --info: 199 89% 48%;
  --info-foreground: 0 0% 100%;
  --border: 217 24% 24%;
  --input: 217 24% 24%;
  --ring: 0 84% 58%;
}

html:not(.dark) {
  --background: 36 38% 96%;
  --foreground: 222 47% 8%;
  --card: 0 0% 100%;
  --card-foreground: 222 47% 8%;
  --popover: 0 0% 100%;
  --popover-foreground: 222 47% 8%;
  --primary: 0 78% 48%;
  --primary-foreground: 0 0% 100%;
  --secondary: 35 24% 90%;
  --secondary-foreground: 222 47% 8%;
  --muted: 35 24% 90%;
  --muted-foreground: 222 18% 36%;
  --accent: 38 92% 50%;
  --accent-foreground: 222 47% 8%;
  --destructive: 0 84% 50%;
  --destructive-foreground: 0 0% 100%;
  --success: 142 70% 35%;
  --success-foreground: 0 0% 100%;
  --warning: 38 92% 46%;
  --warning-foreground: 222 47% 8%;
  --info: 199 89% 42%;
  --info-foreground: 0 0% 100%;
  --border: 35 18% 78%;
  --input: 35 18% 78%;
  --ring: 0 78% 48%;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  background:
    radial-gradient(circle at 8% 0%, hsl(var(--primary) / 0.12), transparent 22rem),
    radial-gradient(circle at 90% 12%, hsl(var(--info) / 0.10), transparent 24rem),
    hsl(var(--background));
  color: hsl(var(--foreground));
}

button, input, select, textarea { font: inherit; }

.site-3d {
  position: relative;
  overflow-x: clip;
  isolation: isolate;
}

.site-3d::before {
  content: '';
  position: fixed;
  inset: auto -12vw 0 -12vw;
  height: 34vh;
  pointer-events: none;
  background: linear-gradient(to top, hsl(var(--primary) / 0.10), transparent 72%);
  filter: blur(22px);
  z-index: 0;
}

.world-3d {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  perspective: 1100px;
  transform-style: preserve-3d;
}

.world-grid {
  position: absolute;
  left: -22vw;
  right: -22vw;
  bottom: -18vh;
  height: 58vh;
  opacity: 0.34;
  background:
    linear-gradient(90deg, hsl(var(--primary) / 0.22) 1px, transparent 1px),
    linear-gradient(0deg, hsl(var(--foreground) / 0.12) 1px, transparent 1px),
    radial-gradient(ellipse at center, hsl(var(--primary) / 0.16), transparent 64%);
  background-size: 88px 88px, 88px 88px, 100% 100%;
  transform: rotateX(66deg) translateZ(-150px);
  transform-origin: top center;
  filter: drop-shadow(0 0 28px hsl(var(--primary) / 0.22));
}

.floating-part,
.floating-ring {
  position: absolute;
  display: block;
  transform-style: preserve-3d;
  opacity: 0.58;
  filter: drop-shadow(0 18px 26px hsl(var(--primary) / 0.18));
  animation: floatPart 8s ease-in-out infinite;
}

.floating-part {
  width: 78px;
  height: 78px;
  border: 1px solid hsl(var(--foreground) / 0.12);
  border-radius: 18px;
  background:
    linear-gradient(135deg, hsl(var(--foreground) / 0.12), transparent 46%),
    linear-gradient(135deg, hsl(var(--primary) / 0.34), hsl(var(--card) / 0.40));
  box-shadow: inset 0 1px 0 hsl(var(--foreground) / 0.18), 0 0 38px hsl(var(--primary) / 0.15);
}

.floating-ring {
  width: 92px;
  height: 92px;
  border: 12px solid hsl(var(--foreground) / 0.20);
  border-radius: 50%;
  background: conic-gradient(from 45deg, hsl(var(--primary) / 0.70), transparent, hsl(var(--accent) / 0.58), transparent, hsl(var(--primary) / 0.70));
  box-shadow: inset 0 0 0 8px hsl(var(--background) / 0.40), 0 0 42px hsl(var(--primary) / 0.20);
}

.floating-part-a { top: 18%; left: 4%; transform: rotateX(58deg) rotateY(-28deg) rotateZ(14deg) translateZ(-40px); }
.floating-part-b { top: 44%; right: 5%; width: 56px; height: 56px; animation-delay: -2.4s; transform: rotateX(50deg) rotateY(31deg) rotateZ(-16deg) translateZ(-80px); }
.floating-part-c { top: 10%; right: 23%; width: 42px; height: 42px; animation-delay: -4.8s; transform: rotateX(42deg) rotateY(-42deg) rotateZ(28deg) translateZ(-110px); }
.floating-ring-a { top: 32%; left: 12%; animation-delay: -1.2s; transform: rotateX(70deg) rotateY(18deg) translateZ(-95px); }
.floating-ring-b { bottom: 18%; right: 18%; width: 62px; height: 62px; border-width: 9px; animation-delay: -3.6s; transform: rotateX(68deg) rotateY(-22deg) translateZ(-120px); }

.mesh-background {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 18% 18%, hsl(var(--primary) / 0.20), transparent 28rem),
    radial-gradient(circle at 84% 12%, hsl(var(--accent) / 0.14), transparent 24rem),
    linear-gradient(135deg, hsl(var(--background)), hsl(var(--secondary) / 0.70));
}

.mesh-background::before {
  content: '';
  position: absolute;
  inset: -30% -20% auto;
  height: 70%;
  background: conic-gradient(from 180deg, transparent, hsl(var(--primary) / 0.18), transparent, hsl(var(--info) / 0.12), transparent);
  filter: blur(54px);
  transform: rotate(-10deg);
}

.mesh-background > * { position: relative; }

.hero-title {
  text-shadow: 0 1px 0 hsl(var(--primary) / 0.35), 0 16px 42px hsl(var(--primary) / 0.20);
}

.section-header-3d {
  perspective: 900px;
  transform-style: preserve-3d;
}

.section-header-3d h1 {
  text-shadow: 0 1px 0 hsl(var(--foreground) / 0.10), 0 13px 34px hsl(var(--primary) / 0.18);
  transform: translateZ(18px);
}

.section-header-3d p {
  position: relative;
  transform: translateZ(8px);
}

.hero-shell,
.track-perspective,
.timeline-3d {
  perspective: 1200px;
}

.hero-tilt {
  position: relative;
  transform: rotateX(7deg) rotateY(-12deg) translateZ(0);
  transform-style: preserve-3d;
  box-shadow: var(--shadow-elegant), inset 0 1px 0 hsl(var(--foreground) / 0.08);
}

.hero-tilt::before,
.panel-3d::before,
.card-3d::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(135deg, hsl(var(--foreground) / 0.16), transparent 28%, hsl(var(--primary) / 0.12));
  opacity: 0.65;
}

.hero-tilt::after {
  content: '';
  position: absolute;
  inset: auto 8% -22px 8%;
  height: 28px;
  border-radius: 999px;
  background: hsl(var(--primary) / 0.22);
  filter: blur(18px);
  transform: translateZ(-55px);
}

.hero-tilt-layer {
  position: relative;
  transform: translateZ(38px);
}

.bike-3d-stage {
  position: relative;
  min-height: 230px;
  overflow: hidden;
  border-radius: 1rem;
  background:
    radial-gradient(circle at 50% 18%, hsl(var(--primary) / 0.22), transparent 11rem),
    linear-gradient(180deg, hsl(var(--secondary) / 0.75), hsl(var(--background) / 0.95));
  transform-style: preserve-3d;
  box-shadow: inset 0 1px 0 hsl(var(--foreground) / 0.10), inset 0 -34px 60px hsl(var(--background) / 0.60);
}

.track-grid {
  position: absolute;
  left: -18%;
  right: -18%;
  bottom: -26%;
  height: 72%;
  background:
    linear-gradient(90deg, hsl(var(--foreground) / 0.14) 1px, transparent 1px),
    linear-gradient(0deg, hsl(var(--foreground) / 0.12) 1px, transparent 1px),
    linear-gradient(180deg, hsl(var(--primary) / 0.16), hsl(var(--foreground) / 0.04));
  background-size: 54px 54px, 54px 54px, 100% 100%;
  transform: rotateX(68deg) translateZ(-34px);
  transform-origin: top center;
}

.track-glow {
  position: absolute;
  left: 16%;
  right: 16%;
  bottom: 26%;
  height: 5px;
  border-radius: 999px;
  background: hsl(var(--primary));
  box-shadow: 0 0 24px hsl(var(--primary) / 0.85), 0 0 70px hsl(var(--primary) / 0.45);
  transform: translateZ(16px);
}

.bike-3d {
  position: absolute;
  left: 50%;
  bottom: 42px;
  width: min(330px, 86%);
  height: 124px;
  transform: translateX(-50%) translateZ(70px) rotateY(-8deg);
  transform-style: preserve-3d;
  animation: bikeFloat 4.2s ease-in-out infinite;
}

.wheel {
  position: absolute;
  bottom: 0;
  width: 78px;
  height: 78px;
  border: 10px solid hsl(var(--foreground) / 0.90);
  border-radius: 50%;
  background:
    radial-gradient(circle, transparent 25%, hsl(var(--card)) 27% 37%, transparent 39%),
    conic-gradient(from 0deg, hsl(var(--primary)), hsl(var(--foreground) / 0.08), hsl(var(--primary)), hsl(var(--foreground) / 0.08), hsl(var(--primary)));
  box-shadow: inset 0 0 0 6px hsl(var(--background)), 0 14px 18px hsl(var(--background) / 0.62);
}

.wheel-front { right: 18px; }
.wheel-back { left: 18px; }

.bike-body,
.bike-tank,
.bike-seat,
.bike-fork,
.rider-helmet,
.speed-line {
  position: absolute;
  display: block;
}

.bike-body {
  left: 66px;
  bottom: 52px;
  width: 174px;
  height: 32px;
  border-radius: 999px 999px 16px 16px;
  background: linear-gradient(135deg, hsl(var(--primary)), hsl(var(--accent)));
  box-shadow: 0 18px 24px hsl(var(--primary) / 0.28), inset 0 1px 0 hsl(var(--foreground) / 0.35);
  transform: skewX(-15deg) translateZ(18px);
}

.bike-tank {
  left: 128px;
  bottom: 78px;
  width: 82px;
  height: 42px;
  border-radius: 70% 30% 18px 18px;
  background: linear-gradient(135deg, hsl(var(--primary)), hsl(var(--card)) 88%);
  transform: rotate(-9deg) translateZ(30px);
}

.bike-seat {
  left: 80px;
  bottom: 89px;
  width: 70px;
  height: 15px;
  border-radius: 999px;
  background: hsl(var(--foreground) / 0.82);
  transform: rotate(7deg) translateZ(20px);
}

.bike-fork {
  right: 76px;
  bottom: 58px;
  width: 7px;
  height: 72px;
  border-radius: 999px;
  background: hsl(var(--foreground) / 0.78);
  transform: rotate(-24deg) translateZ(22px);
}

.rider-helmet {
  left: 176px;
  bottom: 120px;
  width: 34px;
  height: 34px;
  border-radius: 50% 50% 42% 42%;
  background: radial-gradient(circle at 65% 35%, hsl(var(--foreground)), hsl(var(--accent)) 36%, hsl(var(--primary)) 72%);
  box-shadow: 0 8px 22px hsl(var(--primary) / 0.28);
  transform: translateZ(44px);
}

.speed-line {
  left: -6px;
  height: 3px;
  border-radius: 999px;
  background: hsl(var(--primary) / 0.75);
  box-shadow: 0 0 14px hsl(var(--primary) / 0.70);
}

.speed-line-one { top: 32px; width: 72px; }
.speed-line-two { top: 58px; width: 112px; background: hsl(var(--accent) / 0.75); }

.apex-marker {
  position: absolute;
  bottom: 25px;
  width: 18px;
  height: 38px;
  border-radius: 4px 4px 50% 50%;
  background: linear-gradient(180deg, hsl(var(--accent)), hsl(var(--primary)));
  transform: rotateX(58deg) translateZ(36px);
  box-shadow: 0 9px 18px hsl(var(--background) / 0.55);
}

.apex-left { left: 13%; }
.apex-right { right: 13%; }

.panel-3d,
.card-3d,
.button-3d,
.logo-cube,
.icon-orb,
.mini-3d-card,
.footer-3d {
  position: relative;
  transform-style: preserve-3d;
}

.panel-3d {
  box-shadow: var(--shadow-3d);
}

.card-3d {
  box-shadow: var(--shadow-sm), 0 14px 0 hsl(var(--background) / 0.45);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

.card-3d > *, .panel-3d > * { position: relative; }

.card-3d:hover {
  transform: translateY(-8px) rotateX(5deg) rotateY(-3deg) translateZ(18px);
  border-color: hsl(var(--primary) / 0.50);
  box-shadow: 0 22px 48px hsl(var(--primary) / 0.18), 0 16px 0 hsl(var(--background) / 0.45);
}

.mini-3d-card {
  box-shadow: inset 0 1px 0 hsl(var(--foreground) / 0.08), 0 10px 0 hsl(var(--background) / 0.35), 0 18px 30px hsl(var(--background) / 0.20);
  transform: translateZ(20px);
}

.button-3d {
  box-shadow: 0 7px 0 hsl(var(--background) / 0.40), 0 16px 32px hsl(var(--primary) / 0.14);
}

.button-3d:active {
  box-shadow: 0 2px 0 hsl(var(--background) / 0.44), 0 8px 18px hsl(var(--primary) / 0.12);
}

.logo-cube {
  box-shadow: inset 0 1px 0 hsl(var(--foreground) / 0.24), 0 8px 0 hsl(var(--background) / 0.48), 0 16px 32px hsl(var(--primary) / 0.18);
  transition: transform var(--transition-smooth);
}

.group:hover .logo-cube {
  transform: rotateX(12deg) rotateY(-14deg) translateY(-2px);
}

.nav-3d {
  box-shadow: inset 0 -1px 0 hsl(var(--foreground) / 0.05);
}

.icon-orb,
.step-orb {
  box-shadow: inset 0 1px 0 hsl(var(--foreground) / 0.20), 0 10px 22px hsl(var(--background) / 0.28);
}

.timeline-3d::before {
  content: '';
  position: absolute;
  left: 1.5rem;
  top: 1rem;
  bottom: 1rem;
  width: 4px;
  border-radius: 999px;
  background: linear-gradient(180deg, hsl(var(--primary)), hsl(var(--accent)), hsl(var(--info)));
  box-shadow: 0 0 28px hsl(var(--primary) / 0.38);
  transform: translateZ(-20px);
}

.gear-row-3d {
  transition: transform var(--transition), background-color var(--transition), box-shadow var(--transition);
}

.gear-row-3d:hover {
  transform: translateX(6px) translateZ(10px);
  box-shadow: inset 4px 0 0 hsl(var(--primary));
}

.footer-3d {
  box-shadow: 0 -18px 55px hsl(var(--background) / 0.24), inset 0 1px 0 hsl(var(--foreground) / 0.05);
}

.safe-bottom {
  padding-bottom: calc(0.75rem + env(safe-area-inset-bottom));
}

.safe-top {
  padding-top: env(safe-area-inset-top);
}

input, select, textarea { font-size: max(16px, 1rem); }

::selection {
  background: hsl(var(--primary) / 0.30);
  color: hsl(var(--foreground));
}

/* Custom additions for MOTO HUD copy/alteration */
.grid-cols-24 {
  grid-template-columns: repeat(24, minmax(0, 1fr));
}

.animate-flash {
  animation: flash 0.4s ease-in-out infinite alternate;
}

@keyframes flash {
  0% { opacity: 0.3; }
  100% { opacity: 1; }
}

@keyframes bikeFloat {
  0%, 100% { transform: translateX(-50%) translateZ(70px) rotateY(-8deg) translateY(0); }
  50% { transform: translateX(-50%) translateZ(82px) rotateY(-4deg) translateY(-8px); }
}

@keyframes floatPart {
  0%, 100% { margin-top: 0; filter: drop-shadow(0 18px 26px hsl(var(--primary) / 0.18)); }
  50% { margin-top: -18px; filter: drop-shadow(0 28px 38px hsl(var(--primary) / 0.28)); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 768px) {
  .hero-tilt {
    transform: rotateX(3deg) rotateY(-4deg);
  }

  .bike-3d-stage {
    min-height: 190px;
  }

  .bike-3d {
    transform: translateX(-50%) scale(0.82) translateZ(46px) rotateY(-6deg);
  }

  .world-grid {
    opacity: 0.22;
    background-size: 64px 64px, 64px 64px, 100% 100%;
  }

  .floating-part,
  .floating-ring {
    opacity: 0.24;
  }

  .floating-part-a,
  .floating-ring-a {
    display: none;
  }

  .timeline-3d::before {
    left: 1.3rem;
  }
}