:root {
  --void: #050505;
  --violet: #ffdf20;
  --cyan: #9ae600;
  --white: #ffffff;
  --dim: rgba(255, 255, 255, 0.55);
  --faint: rgba(255, 255, 255, 0.32);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ring-radius: 360px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--void);
  color: var(--white);
  font-family: "Space Grotesk", sans-serif;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

/* Ambient void layers */
.aura {
  position: fixed;
  inset: -25%;
  background: radial-gradient(
    circle at 50% 44%,
    rgba(58, 28, 92, 0.6),
    rgba(24, 12, 46, 0.22) 34%,
    transparent 64%
  );
  z-index: 0;
  pointer-events: none;
  animation: drift 20s ease-in-out infinite alternate;
}

.stars {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
  background-image:
    radial-gradient(1px 1px at 12% 22%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(1px 1px at 78% 14%, rgba(255, 255, 255, 0.5), transparent),
    radial-gradient(1px 1px at 34% 68%, rgba(139, 92, 246, 0.6), transparent),
    radial-gradient(1px 1px at 64% 82%, rgba(6, 182, 212, 0.5), transparent),
    radial-gradient(1px 1px at 88% 54%, rgba(255, 255, 255, 0.4), transparent),
    radial-gradient(1px 1px at 22% 88%, rgba(255, 255, 255, 0.45), transparent),
    radial-gradient(1px 1px at 50% 32%, rgba(255, 255, 255, 0.3), transparent);
}

@keyframes drift {
  from {
    transform: translate3d(-2%, -1%, 0) scale(1);
  }
  to {
    transform: translate3d(2%, 3%, 0) scale(1.14);
  }
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px clamp(20px, 5vw, 64px);
  backdrop-filter: blur(6px);
}

.logo {
  font-family: "JetBrains Mono", monospace;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 3px;
  color: var(--white);
}
.logo span {
  color: var(--cyan);
}

.nav-links {
  display: flex;
  gap: 38px;
  list-style: none;
  align-items: center;
}
.nav-links a {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--faint);
  transition:
    color 0.5s var(--ease),
    text-shadow 0.5s var(--ease);
  position: relative;
}
.nav-links a::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--cyan);
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%) scale(0);
  transition: transform 0.5s var(--ease);
  box-shadow: 0 0 8px var(--cyan);
}
.nav-links a:hover {
  color: var(--white);
  text-shadow: 0 0 14px rgba(6, 182, 212, 0.7);
}
.nav-links a:hover::before {
  transform: translateY(-50%) scale(1);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--white);
  transition:
    transform 0.4s var(--ease),
    opacity 0.4s var(--ease);
}

/* Mobile menu overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 49;
  background: rgba(5, 5, 5, 0.96);
  backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 30px;
  padding: 80px 24px;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.5s var(--ease),
    visibility 0.5s var(--ease);
}
.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}
.mobile-menu a {
  font-family: "JetBrains Mono", monospace;
  font-size: 20px;
  letter-spacing: 3px;
  color: var(--dim);
  transition: color 0.4s var(--ease);
}
.mobile-menu a:hover {
  color: var(--cyan);
}

/* Hero with orbital ring */
.hero {
  position: relative;
  z-index: 2;
  height: 100vh;
  min-height: 640px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.stage {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1300px;
  cursor: grab;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
}
.stage.dragging {
  cursor: grabbing;
}
.stage.dragging .panel {
  cursor: grabbing;
}

.parallax {
  position: relative;
  width: 1px;
  height: 1px;
  transform-style: preserve-3d;
  transition: transform 0.6s var(--ease);
}

.hero-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) translateZ(40px);
  text-align: center;
  width: 90vw;
  max-width: 760px;
  pointer-events: none;
}
.eyebrow {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(10px, 1.4vw, 13px);
  letter-spacing: 6px;
  color: var(--cyan);
  text-shadow: 0 0 16px rgba(6, 182, 212, 0.6);
  margin-bottom: 22px;
}
.hero-text h1 {
  font-size: clamp(2.8rem, 9vw, 6.4rem);
  font-weight: 700;
  line-height: 0.94;
  letter-spacing: -0.03em;
  color: var(--white);
  text-shadow:
    0 0 38px rgba(255, 255, 255, 0.28),
    0 0 80px rgba(139, 92, 246, 0.32);
}
.hero-text p {
  margin-top: 26px;
  font-size: clamp(0.92rem, 2vw, 1.08rem);
  color: var(--dim);
  letter-spacing: 0.4px;
  max-width: 440px;
  margin-left: auto;
  margin-right: auto;
}

/* The orbital ring */
.ring-tilt {
  position: absolute;
  top: 0;
  left: 0;
  transform-style: preserve-3d;
  transform: rotateX(var(--tiltX, -20deg))
    scale3d(var(--zoom, 1), var(--zoom, 1), var(--zoom, 1));
  transition: transform 0.8s var(--ease);
}
.ring {
  position: absolute;
  top: 0;
  left: 0;
  transform-style: preserve-3d;
  will-change: transform;
}

.panel {
  position: absolute;
  top: 0;
  left: 0;
  width: 158px;
  height: 210px;
  margin-left: -79px;
  margin-top: -105px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.035);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow:
    inset 0 0 34px rgba(139, 92, 246, 0.16),
    0 0 42px rgba(6, 182, 212, 0.1);
  transform: rotateY(var(--ry)) translateZ(var(--tz)) rotateZ(var(--rz))
    scale(var(--s, 1));
  transition:
    transform 0.7s var(--ease),
    box-shadow 0.7s var(--ease);
  cursor: pointer;
}
/* 1px gradient border via masked pseudo element */
.panel::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(
    to bottom right,
    rgba(139, 92, 246, 0.5),
    rgba(6, 182, 212, 0.2)
  );
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  transition:
    background 0.7s var(--ease),
    opacity 0.7s var(--ease);
}
.panel:hover {
  --s: 1.1;
  box-shadow:
    inset 0 0 44px rgba(139, 92, 246, 0.3),
    0 0 60px rgba(6, 182, 212, 0.4);
}
.panel:hover::after {
  background: linear-gradient(
    to bottom right,
    rgba(139, 92, 246, 0.95),
    rgba(6, 182, 212, 0.7)
  );
}
.panel .p-num {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--cyan);
}
.panel .p-label {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.5px;
}
.panel .p-meta {
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  letter-spacing: 1px;
  color: var(--faint);
}

/* Two stacked faces per panel, crossfaded by the toggle with a staggered delay */
.panel-face {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  transition: opacity 0.8s var(--ease);
  transition-delay: calc(var(--i, 0) * 0.045s);
}
.panel-face--text {
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  opacity: 1;
}
.panel-face--image {
  overflow: hidden;
  opacity: 0;
  background: linear-gradient(140deg, #1a1030, #0a1f26);
}
.panel-face--image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: scale(1.08);
  transition: transform 1.3s var(--ease);
  transition-delay: calc(var(--i, 0) * 0.045s);
}
.panel-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to top, rgba(5, 5, 5, 0.92), rgba(5, 5, 5, 0.08) 56%),
    linear-gradient(140deg, rgba(139, 92, 246, 0.4), rgba(6, 182, 212, 0.28));
  transition: opacity 0.6s var(--ease);
}
.panel:hover .panel-scrim {
  opacity: 0;
}
.panel-cap {
  position: absolute;
  bottom: 14px;
  left: 16px;
  right: 16px;
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--white);
  text-shadow:
    0 2px 12px rgba(0, 0, 0, 0.95),
    0 0 22px rgba(0, 0, 0, 0.7);
}

/* Toggle ON state */
.visuals-on .panel-face--text {
  opacity: 0;
}
.visuals-on .panel-face--image {
  opacity: 1;
}
.visuals-on .panel-face--image img {
  transform: scale(1);
}

/* HUD controls docked bottom right */
.hero-controls {
  position: absolute;
  right: clamp(18px, 4vw, 44px);
  bottom: clamp(80px, 12vh, 110px);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 16px;
}
.ctrl {
  display: flex;
  align-items: center;
  gap: 10px;
}
.ctrl-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--faint);
}
.switch {
  position: relative;
  width: 44px;
  height: 24px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  cursor: pointer;
  padding: 0;
  transition:
    background 0.6s var(--ease),
    border-color 0.6s var(--ease),
    box-shadow 0.6s var(--ease);
}
.switch .knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--dim);
  transition:
    transform 0.6s var(--ease),
    background 0.6s var(--ease),
    box-shadow 0.6s var(--ease);
}
.switch[aria-checked="true"] {
  background: linear-gradient(to right, var(--violet), var(--cyan));
  border-color: rgba(6, 182, 212, 0.8);
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.5);
}
.switch[aria-checked="true"] .knob {
  transform: translateX(20px);
  background: var(--white);
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.9);
}
.switch:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

/* 3 step ring spacing */
.spacing {
  display: flex;
  gap: 3px;
  padding: 3px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.spacing-step {
  width: 26px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  border-radius: 18px;
  cursor: pointer;
  transition: background 0.5s var(--ease);
}
.spacing-step i {
  display: block;
  border-radius: 50%;
  background: var(--faint);
  transition:
    background 0.5s var(--ease),
    box-shadow 0.5s var(--ease);
}
.spacing-step:nth-child(1) i {
  width: 5px;
  height: 5px;
}
.spacing-step:nth-child(2) i {
  width: 8px;
  height: 8px;
}
.spacing-step:nth-child(3) i {
  width: 11px;
  height: 11px;
}
.spacing-step.is-active {
  background: rgba(6, 182, 212, 0.14);
}
.spacing-step.is-active i {
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
}
.spacing-step:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.scroll-cue {
  position: absolute;
  bottom: 34px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 3px;
  color: var(--faint);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.scroll-cue .line {
  width: 1px;
  height: 38px;
  background: linear-gradient(var(--cyan), transparent);
  animation: pulse-line 2.4s ease-in-out infinite;
}
@keyframes pulse-line {
  0%,
  100% {
    opacity: 0.3;
  }
  50% {
    opacity: 1;
  }
}

/* Content sections */
.section {
  position: relative;
  z-index: 2;
  padding: clamp(90px, 14vh, 160px) clamp(20px, 6vw, 90px);
  max-width: 1240px;
  margin: 0 auto;
}
.section-head {
  margin-bottom: 64px;
  max-width: 620px;
}
.section-head .eyebrow {
  text-align: left;
  margin-bottom: 18px;
}
.section-head h2 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.02em;
  text-shadow: 0 0 30px rgba(255, 255, 255, 0.16);
}
.section-head p {
  margin-top: 20px;
  color: var(--dim);
  font-size: 1.02rem;
  line-height: 1.6;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.feature {
  position: relative;
  padding: 40px 30px 36px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(8px);
  overflow: hidden;
  transition:
    transform 0.7s var(--ease),
    background 0.7s var(--ease);
}
.feature::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--cyan);
  box-shadow:
    0 0 18px var(--cyan),
    0 0 6px var(--cyan);
  animation: pulse-top 3.2s ease-in-out infinite;
}
.feature:nth-child(2)::before {
  animation-delay: 1s;
}
.feature:nth-child(3)::before {
  animation-delay: 2s;
}
@keyframes pulse-top {
  0%,
  100% {
    opacity: 0.35;
  }
  50% {
    opacity: 1;
  }
}
.feature:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.05);
}
.feature .f-index {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--violet);
  margin-bottom: 22px;
}
.feature h3 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}
.feature p {
  color: var(--dim);
  font-size: 0.94rem;
  line-height: 1.62;
}

/* Closing call to action */
.cta {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: clamp(100px, 16vh, 180px) 24px;
}
.cta h2 {
  font-size: clamp(2.2rem, 7vw, 4.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  text-shadow: 0 0 40px rgba(139, 92, 246, 0.4);
}
.cta p {
  margin: 24px auto 42px;
  max-width: 460px;
  color: var(--dim);
  font-size: 1.02rem;
}
.btn {
  display: inline-block;
  position: relative;
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  letter-spacing: 3px;
  padding: 18px 42px;
  border-radius: 50px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid transparent;
  background-clip: padding-box;
  transition:
    transform 0.6s var(--ease),
    box-shadow 0.6s var(--ease);
  overflow: hidden;
}
.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(to right, var(--violet), var(--cyan));
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}
.btn:hover {
  transform: translateY(-3px) scale(1.04);
  box-shadow:
    0 0 40px rgba(139, 92, 246, 0.5),
    0 0 18px rgba(6, 182, 212, 0.4);
}

/* Footer */
.footer {
  position: relative;
  z-index: 2;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 44px clamp(20px, 6vw, 64px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer .logo {
  font-size: 13px;
}
.footer .credit {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--faint);
}
.footer .credit a {
  color: var(--dim);
  transition: color 0.4s var(--ease);
}
.footer .credit a:hover {
  color: var(--cyan);
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition:
    opacity 1s var(--ease),
    transform 1s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 900px) {
  .features {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 720px) {
  .nav-links {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
  :root {
    --ring-radius: 220px;
  }
  .panel {
    width: 124px;
    height: 168px;
    margin-left: -62px;
    margin-top: -84px;
  }
  .ring-tilt {
    --tiltX: -14deg;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .aura,
  .ring,
  .scroll-cue .line,
  .feature::before {
    animation: none;
  }
  .parallax {
    transition: none;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
}