:root {
  --bg-0: #04070c;
  --bg-1: #0b111b;
  --bg-2: #151a22;
  --cyan: #00f0ff;
  --blue: #00a8ff;
  --ice: #e8f1ff;
  --steel: #667287;
  --orange: #ff7a18;
  --green: #20f08b;
  --pink: #ff4fd8;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
}

body {
  overflow: hidden;
  background: var(--bg-0);
  color: var(--ice);
  font-family: Arial, Helvetica, sans-serif;
}

.eventen-stage {
  position: relative;
  display: grid;
  min-height: 100vh;
  place-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #010205 0%, #050912 52%, #090c11 100%);
  isolation: isolate;
}

.eventen-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(ellipse at center, rgba(1, 2, 5, 0.58) 0 23%, rgba(1, 2, 5, 0.28) 43%, transparent 72%);
}

.ambient {
  position: absolute;
  width: 70vmax;
  height: 70vmax;
  border-radius: 999px;
  pointer-events: none;
  z-index: -1;
  mix-blend-mode: screen;
  will-change: transform, opacity;
}

.ambient-a {
  left: -22vmax;
  top: -20vmax;
  opacity: 0.38;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.2) 0 8%, rgba(0, 168, 255, 0.1) 22%, transparent 62%);
  animation: driftA 5.2s ease-in-out infinite alternate;
}

.ambient-b {
  right: -24vmax;
  bottom: -22vmax;
  opacity: 0.34;
  background: radial-gradient(circle, rgba(0, 168, 255, 0.2) 0 10%, rgba(232, 241, 255, 0.07) 26%, transparent 64%);
  animation: driftB 6.4s ease-in-out infinite alternate;
}

.ambient-c {
  left: 28vw;
  top: 48vh;
  width: 52vmax;
  height: 52vmax;
  opacity: 0.2;
  background: radial-gradient(circle, rgba(102, 114, 135, 0.16) 0 12%, rgba(0, 240, 255, 0.07) 30%, transparent 66%);
  animation: driftC 7.6s ease-in-out infinite alternate;
}

.aurora {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 0;
  width: 112vmax;
  height: 34vmax;
  border-radius: 50%;
  pointer-events: none;
  mix-blend-mode: screen;
  will-change: transform, opacity;
  mask-image: radial-gradient(ellipse at center, black 0 42%, transparent 74%);
}

.aurora-a {
  opacity: 0.36;
  background:
    radial-gradient(ellipse at 18% 54%, rgba(0, 240, 255, 0.36) 0 9%, transparent 28%),
    radial-gradient(ellipse at 42% 46%, rgba(0, 168, 255, 0.26) 0 12%, transparent 34%),
    radial-gradient(ellipse at 72% 58%, rgba(232, 241, 255, 0.14) 0 9%, transparent 30%);
  transform: translate3d(-50%, -58%, 0) rotate(-9deg) scaleX(1.08);
  animation: auroraA 4.8s ease-in-out infinite alternate;
}

.aurora-b {
  opacity: 0.24;
  background:
    radial-gradient(ellipse at 26% 48%, rgba(102, 114, 135, 0.22) 0 12%, transparent 34%),
    radial-gradient(ellipse at 56% 58%, rgba(0, 240, 255, 0.22) 0 10%, transparent 32%),
    radial-gradient(ellipse at 84% 46%, rgba(0, 168, 255, 0.2) 0 10%, transparent 32%);
  transform: translate3d(-48%, -38%, 0) rotate(8deg) scaleX(1.14);
  animation: auroraB 6.2s ease-in-out infinite alternate;
}

.aurora-c {
  opacity: 0.18;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(232, 241, 255, 0.14) 0 8%, transparent 28%),
    radial-gradient(ellipse at 68% 54%, rgba(0, 240, 255, 0.2) 0 11%, transparent 35%);
  transform: translate3d(-54%, -50%, 0) rotate(-2deg) scaleX(0.92);
  animation: auroraC 7.4s ease-in-out infinite alternate;
}

.color-bloom {
  position: absolute;
  z-index: -1;
  pointer-events: none;
  border-radius: 999px;
  mix-blend-mode: screen;
  will-change: transform, opacity;
}

.bloom-orange {
  left: -18vmax;
  bottom: -22vmax;
  width: 58vmax;
  height: 58vmax;
  opacity: 0.34;
  background: radial-gradient(circle, rgba(255, 122, 24, 0.34) 0 10%, rgba(255, 122, 24, 0.14) 28%, transparent 68%);
  animation: bloomOrange 6.8s ease-in-out infinite alternate;
}

.bloom-green {
  right: -20vmax;
  top: 8vh;
  width: 54vmax;
  height: 54vmax;
  opacity: 0.24;
  background: radial-gradient(circle, rgba(32, 240, 139, 0.3) 0 9%, rgba(32, 240, 139, 0.12) 28%, transparent 66%);
  animation: bloomGreen 7.8s ease-in-out infinite alternate;
}

.bloom-pink {
  left: 22vw;
  top: -26vmax;
  width: 62vmax;
  height: 44vmax;
  opacity: 0.22;
  background: radial-gradient(ellipse, rgba(255, 79, 216, 0.28) 0 10%, rgba(255, 79, 216, 0.1) 30%, transparent 70%);
  animation: bloomPink 8.6s ease-in-out infinite alternate;
}

.tech-grid {
  position: absolute;
  inset: -16%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.12;
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.1) 1px, transparent 1px),
    linear-gradient(rgba(255, 79, 216, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(32, 240, 139, 0.035) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
  mask-image: radial-gradient(ellipse at center, transparent 0 19%, black 36% 62%, transparent 82%);
  transform: perspective(900px) rotateX(62deg) translate3d(0, 16vh, 0);
  transform-origin: center bottom;
  animation: gridDrift 5.2s linear infinite;
  will-change: transform;
}

.noise {
  position: absolute;
  inset: 0;
  opacity: 0.08;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: radial-gradient(circle at center, black, transparent 74%);
}

.scanline {
  position: absolute;
  inset: 0;
  opacity: 0.1;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(255, 255, 255, 0.05) 0,
    rgba(255, 255, 255, 0.05) 1px,
    transparent 1px,
    transparent 8px
  );
  mix-blend-mode: overlay;
}

.logo-scene {
  position: relative;
  z-index: 2;
  width: min(86vw, 1180px);
  padding: clamp(16px, 4vw, 48px);
}

.logo-shell {
  position: relative;
  display: grid;
  place-items: center;
  min-height: clamp(220px, 38vw, 410px);
  overflow: visible;
}

.eventen-logo {
  position: relative;
  z-index: 1;
  width: min(82vw, 1040px);
  height: auto;
  filter:
    drop-shadow(0 0 15px rgba(0, 240, 255, 0.3))
    drop-shadow(0 0 36px rgba(0, 168, 255, 0.16));
}

@keyframes driftA {
  from {
    transform: translate3d(0, 0, 0) scale(1);
    opacity: 0.3;
  }

  45% {
    transform: translate3d(22vw, 12vh, 0) scale(1.08);
    opacity: 0.42;
  }

  to {
    transform: translate3d(36vw, 26vh, 0) scale(0.95);
    opacity: 0.34;
  }
}

@keyframes driftB {
  from {
    transform: translate3d(0, 0, 0) scale(1.03);
    opacity: 0.26;
  }

  55% {
    transform: translate3d(-18vw, -18vh, 0) scale(0.96);
    opacity: 0.36;
  }

  to {
    transform: translate3d(-34vw, -8vh, 0) scale(1.1);
    opacity: 0.3;
  }
}

@keyframes driftC {
  from {
    transform: translate3d(0, 0, 0) scale(0.9);
    opacity: 0.16;
  }

  50% {
    transform: translate3d(-20vw, -26vh, 0) scale(1.12);
    opacity: 0.24;
  }

  to {
    transform: translate3d(18vw, -18vh, 0) scale(1);
    opacity: 0.18;
  }
}

@keyframes auroraA {
  from {
    transform: translate3d(-55%, -62%, 0) rotate(-11deg) scaleX(1.04) scaleY(0.88);
    opacity: 0.28;
  }

  52% {
    transform: translate3d(-46%, -54%, 0) rotate(-5deg) scaleX(1.18) scaleY(1);
    opacity: 0.42;
  }

  to {
    transform: translate3d(-50%, -47%, 0) rotate(-13deg) scaleX(1.08) scaleY(0.92);
    opacity: 0.32;
  }
}

@keyframes auroraB {
  from {
    transform: translate3d(-44%, -34%, 0) rotate(10deg) scaleX(1.12) scaleY(0.86);
    opacity: 0.18;
  }

  48% {
    transform: translate3d(-54%, -42%, 0) rotate(5deg) scaleX(1.24) scaleY(0.98);
    opacity: 0.3;
  }

  to {
    transform: translate3d(-50%, -30%, 0) rotate(12deg) scaleX(1.08) scaleY(0.9);
    opacity: 0.22;
  }
}

@keyframes auroraC {
  from {
    transform: translate3d(-58%, -48%, 0) rotate(-2deg) scaleX(0.9) scaleY(0.9);
    opacity: 0.12;
  }

  50% {
    transform: translate3d(-46%, -56%, 0) rotate(4deg) scaleX(1.08) scaleY(1);
    opacity: 0.23;
  }

  to {
    transform: translate3d(-52%, -40%, 0) rotate(-6deg) scaleX(0.98) scaleY(0.88);
    opacity: 0.16;
  }
}

@keyframes bloomOrange {
  from {
    transform: translate3d(0, 0, 0) scale(0.92);
    opacity: 0.24;
  }

  50% {
    transform: translate3d(10vw, -8vh, 0) scale(1.08);
    opacity: 0.42;
  }

  to {
    transform: translate3d(20vw, -3vh, 0) scale(0.98);
    opacity: 0.3;
  }
}

@keyframes bloomGreen {
  from {
    transform: translate3d(0, 0, 0) scale(0.96);
    opacity: 0.18;
  }

  48% {
    transform: translate3d(-10vw, 10vh, 0) scale(1.1);
    opacity: 0.3;
  }

  to {
    transform: translate3d(-22vw, -4vh, 0) scale(1);
    opacity: 0.22;
  }
}

@keyframes bloomPink {
  from {
    transform: translate3d(-6vw, 0, 0) scaleX(0.9);
    opacity: 0.14;
  }

  54% {
    transform: translate3d(8vw, 10vh, 0) scaleX(1.08);
    opacity: 0.28;
  }

  to {
    transform: translate3d(18vw, 2vh, 0) scaleX(0.96);
    opacity: 0.2;
  }
}

@keyframes gridDrift {
  from {
    transform: perspective(900px) rotateX(62deg) translate3d(0, 16vh, 0);
  }

  to {
    transform: perspective(900px) rotateX(62deg) translate3d(0, calc(16vh + 120px), 0);
  }
}

@media (max-width: 720px) {
  .logo-scene {
    width: 100vw;
    padding: 22px;
  }

  .logo-shell {
    min-height: 240px;
  }

  .eventen-logo {
    width: 92vw;
  }
}

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