:root {
  --bg-0: #020307;
  --bg-1: #050913;
  --bg-2: #090f1b;
  --ink: #f2f7ff;
  --muted: #95a8bf;
  --accent: #9fdfff;
}

* {
  box-sizing: border-box;
}

html {
  background-color: #020307;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: #020307;
  font-family: "Inter", "SF Pro Display", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(64vw 42vw at 14% -8%, rgba(56, 110, 184, 0.14), transparent 66%),
    radial-gradient(58vw 40vw at 88% 2%, rgba(44, 129, 173, 0.1), transparent 72%),
    linear-gradient(172deg, var(--bg-0) 0%, var(--bg-1) 48%, var(--bg-2) 100%);
  overflow-x: hidden;
  position: relative;
  isolation: isolate;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.1;
  background-image: radial-gradient(rgba(255, 255, 255, 0.78) 0.55px, transparent 0.55px);
  background-size: 3px 3px;
  z-index: -3;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at center, transparent 34%, rgba(0, 0, 0, 0.54) 100%);
  z-index: -2;
}

.bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.07;
  background-image:
    linear-gradient(rgba(158, 214, 255, 0.32) 1px, transparent 1px),
    linear-gradient(90deg, rgba(158, 214, 255, 0.32) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at center, black 24%, transparent 84%);
  animation: gridDrift 24s linear infinite;
  z-index: -1;
}

.bg-orb {
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
}

.orb-a {
  width: 50vw;
  height: 50vw;
  top: -20vw;
  left: -14vw;
  background: radial-gradient(circle, rgba(58, 129, 215, 0.18), rgba(58, 129, 215, 0));
  filter: blur(30px);
  animation: floatA 17s ease-in-out infinite;
}

.orb-b {
  width: 40vw;
  height: 40vw;
  right: -12vw;
  bottom: -15vw;
  background: radial-gradient(circle, rgba(74, 180, 232, 0.14), rgba(74, 180, 232, 0));
  filter: blur(30px);
  animation: floatB 18s ease-in-out infinite;
}

.hero {
  width: min(1180px, calc(100vw - 56px));
  margin: 50px auto 34px;
  text-align: center;
  position: relative;
  z-index: 2;
}

.brand {
  margin: 0 0 8px;
  font-size: clamp(2.4rem, 6.6vw, 5.1rem);
  font-weight: 760;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: #f7fbff;
  text-shadow:
    0 0 16px rgba(168, 229, 255, 0.24),
    0 0 40px rgba(56, 135, 196, 0.2);
}

h1 {
  margin: 0;
  font-size: clamp(1.3rem, 2.45vw, 2.04rem);
  letter-spacing: 0.01em;
  line-height: 1.18;
  color: #dbe8f8;
}

.hero-sub {
  margin: 18px auto 18px;
  max-width: 1024px;
  color: var(--muted);
  font-size: clamp(1.02rem, 1.55vw, 1.2rem);
  line-height: 1.58;
}

.release-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 auto 34px;
}

.release-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 116px;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  border: 1px solid rgba(216, 238, 255, 0.24);
  color: #d8e8f7;
  background: rgba(21, 35, 52, 0.42);
  box-shadow: inset 0 1px 0 rgba(244, 251, 255, 0.08);
}

.release-btn.is-disabled {
  color: rgba(182, 198, 214, 0.65);
  border-color: rgba(169, 190, 211, 0.2);
  background: rgba(34, 44, 58, 0.36);
  filter: grayscale(0.5);
  opacity: 0.72;
  cursor: not-allowed;
  pointer-events: none;
}

.intro-video-wrap {
  width: 100%;
}

#introVideo {
  width: 100%;
  display: block;
  border-radius: 20px;
  border: 0;
  background: #02050a;
  box-shadow:
    0 20px 48px rgba(0, 0, 0, 0.58),
    inset 0 0 0 1px rgba(228, 245, 255, 0.1);
}

.highlights {
  width: min(1180px, calc(100vw - 56px));
  margin: 34px auto 62px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  position: relative;
  z-index: 2;
}

.highlight-card {
  border-radius: 16px;
  padding: 14px 14px 15px;
  background: rgba(20, 30, 47, 0.26);
  border: 1px solid rgba(217, 240, 255, 0.08);
  box-shadow: inset 0 1px 0 rgba(243, 252, 255, 0.08);
  backdrop-filter: blur(8px);
}

.highlight-card h3 {
  margin: 0 0 8px;
  font-size: 0.95rem;
  color: #e5f3ff;
}

.highlight-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.56;
  color: var(--muted);
}

.worlds-section {
  width: min(1240px, calc(100vw - 56px));
  margin: 0 auto 48px;
  position: relative;
  z-index: 2;
}

.section-head {
  text-align: center;
  margin-bottom: 28px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.74rem, 3.2vw, 2.46rem);
}

.section-head p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.45vw, 1.14rem);
  line-height: 1.55;
}

.worlds-rail {
  position: relative;
  width: min(100%, 1100px);
  margin: 0 auto;
  --world-size: clamp(230px, 24vw, 308px);
  --world-gap: clamp(26px, 3.2vw, 44px);
  --edge-fade: clamp(56px, 8vw, 112px);
  --nav-offset: clamp(34px, 4.6vw, 56px);
}

.worlds-rail::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(3, 8, 14, 0.48);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.34s ease;
  z-index: 4;
}

body.world-player-mode .worlds-rail::before {
  opacity: 0;
}

.worlds-fade {
  display: none;
}

.world-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 9;
  border: 0;
  background: transparent;
  color: rgba(225, 241, 255, 0.84);
  font-size: 2.35rem;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  transition: color 0.2s ease, transform 0.2s ease, opacity 0.25s ease;
}

.world-nav:hover {
  color: #ffffff;
  transform: translateY(-50%) scale(1.08);
}

.world-nav-prev {
  left: calc(var(--nav-offset) * -1);
}

.world-nav-next {
  right: calc(var(--nav-offset) * -1);
}

body.world-player-mode .world-nav {
  opacity: 0;
  pointer-events: none;
}

.worlds-grid {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: var(--world-gap);
  overflow-x: auto;
  scroll-behavior: smooth;
  scrollbar-width: none;
  padding: 10px clamp(60px, 8vw, 110px) 14px;
  max-width: calc((var(--world-size) * 3) + (var(--world-gap) * 2) + (clamp(60px, 8vw, 110px) * 2));
  margin: 0 auto;
  -webkit-mask-image: linear-gradient(
    to right,
    transparent 0,
    #000 var(--edge-fade),
    #000 calc(100% - var(--edge-fade)),
    transparent 100%
  );
  mask-image: linear-gradient(
    to right,
    transparent 0,
    #000 var(--edge-fade),
    #000 calc(100% - var(--edge-fade)),
    transparent 100%
  );
}

.worlds-grid::-webkit-scrollbar {
  display: none;
}

.worlds-grid.is-hidden {
  display: none;
}

.world-card {
  flex: 0 0 auto;
  width: var(--world-size);
  position: relative;
  z-index: 2;
  transition: transform 0.35s ease;
}

.world-card:hover {
  transform: translateY(-4px);
}

.world-bubble {
  width: 100%;
  border: 0;
  background: transparent;
  padding: 0;
  margin: 0;
  cursor: pointer;
  position: relative;
  border-radius: 50%;
}

.world-bubble::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  pointer-events: none;
  z-index: 2;
  background:
    radial-gradient(78% 62% at 30% 16%, rgba(255, 255, 255, 0.46), rgba(255, 255, 255, 0.08) 44%, rgba(255, 255, 255, 0) 68%),
    radial-gradient(66% 42% at 64% 108%, rgba(7, 16, 29, 0.58), rgba(7, 16, 29, 0) 72%);
  mix-blend-mode: screen;
}

.world-bubble::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  pointer-events: none;
  z-index: 2;
  box-shadow:
    inset 0 0 0 0.8px rgba(200, 233, 255, 0.38),
    inset 0 -8px 20px rgba(2, 8, 16, 0.42);
}

.world-bubble img,
.world-bubble video {
  width: 100%;
  aspect-ratio: 1 / 1;
  display: block;
  object-fit: cover;
  border-radius: 50%;
  border: 0;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.13),
    0 12px 25px rgba(0, 0, 0, 0.42);
  transition:
    opacity 0.34s ease,
    border-radius 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    aspect-ratio 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.world-bubble video {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  background: #040a12;
}

.world-tag {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 14px;
  z-index: 3;
  white-space: nowrap;
  padding: 6px 13px;
  border-radius: 999px;
  border: 1px solid rgba(192, 229, 255, 0.3);
  background: rgba(8, 20, 34, 0.5);
  color: #dff3ff;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  backdrop-filter: blur(5px);
  transition: opacity 0.25s ease;
}

.world-player-view {
  display: none;
  position: relative;
  z-index: 8;
  width: min(100%, 1024px);
  margin: 10px auto 14px;
  border-radius: 18px;
  overflow: hidden;
  background: rgba(5, 10, 17, 0.82);
  box-shadow:
    inset 0 0 0 1px rgba(199, 232, 255, 0.16),
    0 24px 48px rgba(0, 0, 0, 0.58);
  transform: translateY(20px) scale(0.98);
  opacity: 0;
  transition: transform 0.34s ease, opacity 0.34s ease;
}

.world-player-view.is-visible {
  display: block;
  opacity: 1;
  transform: translateY(0) scale(1);
}

#worldPlayerVideo {
  width: 100%;
  aspect-ratio: 16 / 9;
  display: block;
  background: #040a12;
}

.site-footer {
  text-align: center;
  color: #8298b0;
  font-size: 0.84rem;
  padding: 8px 0 24px;
  position: relative;
  z-index: 2;
}

@media (max-width: 980px) {
  .highlights {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .hero,
  .highlights,
  .worlds-section {
    width: calc(100vw - 24px);
  }

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

  .world-nav {
    font-size: 1.9rem;
  }

  .world-nav-prev {
    left: -4px;
  }

  .world-nav-next {
    right: -4px;
  }

  .world-card {
    width: clamp(180px, 54vw, 260px);
    min-width: 166px;
  }

  .world-player-view {
    width: calc(100vw - 20px);
  }
}

@keyframes gridDrift {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(44px);
  }
}

@keyframes floatA {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(2.2vw, 2vw) scale(1.04);
  }
}

@keyframes floatB {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(-2vw, -1.5vw) scale(1.05);
  }
}