:root {
  --bg-deep: #05060d;
  --bg-body: #0a0d1a;
  --accent: #6ee7ff;
  --accent-rgb: 110, 231, 255;
  --purple: #a78bfa;
  --purple-rgb: 167, 139, 250;
  --pink: #f472b6;
  --text: #e8ecff;
  --text-muted: #7a82a8;
  --card-bg: rgba(12, 16, 36, 0.6);
  --card-border: rgba(110, 231, 255, 0.08);
  --card-hover-border: rgba(110, 231, 255, 0.25);
  --nav-blur: rgba(5, 6, 13, 0.7);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg-deep);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

#canvas, #canvas-fallback {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

#canvas.is-fallback {
  opacity: 0;
}

/* CSS starfield base layer (visible before JS runs) */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 30% 70%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1.5px 1.5px at 50% 10%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 72% 40%, rgba(255,255,255,0.35), transparent),
    radial-gradient(1px 1px at 88% 15%, rgba(255,255,255,0.25), transparent),
    radial-gradient(1.5px 1.5px at 15% 80%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 55% 88%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 90% 65%, rgba(255,255,255,0.2), transparent),
    radial-gradient(1.5px 1.5px at 40% 45%, rgba(255,255,255,0.35), transparent),
    radial-gradient(1px 1px at 5% 95%, rgba(255,255,255,0.3), transparent);
  background-size: 100% 100%;
  opacity: 0.5;
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

.scanline {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.03) 2px,
    rgba(0,0,0,0.03) 4px
  );
}

/* ── Navigation ── */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: var(--nav-blur);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.logo {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--text);
}

/* ── Hero ── */

.hero {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 1.5rem 4rem;
}

.hero-content {
  max-width: 48rem;
  animation: heroFadeIn 1.6s ease-out forwards;
}

@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.badge-wrapper {
  margin-bottom: 1.5rem;
  animation: fadeUp 0.8s 0.3s both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(var(--accent-rgb), 0.2);
  border-radius: 999px;
  background: rgba(var(--accent-rgb), 0.04);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(var(--accent-rgb), 0.5); }
  50% { opacity: 0.6; box-shadow: 0 0 8px 2px rgba(var(--accent-rgb), 0.2); }
}

.hero-title {
  margin: 0 0 1.5rem;
  font-size: clamp(3rem, 10vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  animation: fadeUp 0.8s 0.5s both;
}

.title-line {
  display: block;
  background: linear-gradient(135deg, var(--text) 30%, rgba(255,255,255,0.5));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.title-line.accent {
  background: linear-gradient(135deg, var(--accent), var(--purple), var(--pink));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: shimmer 4s ease-in-out infinite;
  background-size: 200% auto;
}

@keyframes shimmer {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 100% center; }
}

.hero-subtitle {
  margin: 0 auto 2.5rem;
  max-width: 34rem;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--text-muted);
  line-height: 1.7;
  animation: fadeUp 0.8s 0.7s both;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  animation: fadeUp 0.8s 0.9s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: 0.75rem;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.25s ease, border-color 0.2s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn-arrow {
  transition: transform 0.2s ease;
}

.btn-primary:hover .btn-arrow {
  transform: translateX(3px);
}

.btn-primary {
  color: #041018;
  background: linear-gradient(135deg, var(--accent), #9cf0ff);
  box-shadow: 0 0 0 1px rgba(var(--accent-rgb), 0.4), 0 8px 32px rgba(var(--accent-rgb), 0.2);
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(var(--accent-rgb), 0.6), 0 12px 48px rgba(var(--accent-rgb), 0.3);
}

.btn-ghost {
  color: var(--text);
  border-color: rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.03);
}

.btn-ghost:hover {
  border-color: rgba(var(--purple-rgb), 0.4);
  box-shadow: 0 0 32px rgba(var(--purple-rgb), 0.1);
  transform: translateY(-2px);
}

.btn-icon {
  opacity: 0.6;
}

/* ── Scroll Indicator ── */

.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  animation: fadeUp 0.8s 1.3s both;
}

.scroll-text {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.scroll-line {
  width: 1px;
  height: 32px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
  50% { opacity: 0.8; transform: scaleY(1); }
}

/* ── Sections ── */

.section {
  position: relative;
  z-index: 2;
  max-width: 60rem;
  margin: 0 auto;
  padding: 6rem 1.5rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.section-header.visible {
  opacity: 1;
  transform: translateY(0);
}

.section-label {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.3rem 0.85rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--purple);
  border: 1px solid rgba(var(--purple-rgb), 0.15);
  border-radius: 999px;
  background: rgba(var(--purple-rgb), 0.04);
}

.section-title {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--purple));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section-desc {
  margin: 0;
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* ── Features Grid ── */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1.25rem;
}

.card {
  position: relative;
  padding: 1.75rem 1.5rem;
  border-radius: 1.25rem;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.3s ease,
              box-shadow 0.4s ease;
  overflow: hidden;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease, border-color 0.3s ease, box-shadow 0.4s ease;
}

.card.visible {
  opacity: 1;
  transform: translateY(0);
}

.card:hover {
  border-color: var(--card-hover-border);
  box-shadow: 0 0 40px rgba(var(--accent-rgb), 0.04), 0 8px 32px rgba(0,0,0,0.3);
  transform: translateY(-4px);
}

.card-glow {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 50% 0%, rgba(var(--accent-rgb), 0.02), transparent 60%);
  pointer-events: none;
  transition: opacity 0.4s ease;
  opacity: 0;
}

.card:hover .card-glow {
  opacity: 1;
}

.card-icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.85rem;
  margin-bottom: 1.25rem;
  color: var(--accent);
  border: 1px solid rgba(var(--accent-rgb), 0.1);
  background: rgba(var(--accent-rgb), 0.04);
}

.card-title {
  margin: 0 0 0.6rem;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.card-desc {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── Join Section ── */

.join {
  position: relative;
  text-align: center;
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.join.visible {
  opacity: 1;
  transform: translateY(0);
}

.join-bg {
  position: absolute;
  inset: -2rem;
  background: radial-gradient(600px 400px at 50% 20%, rgba(var(--purple-rgb), 0.04), transparent 60%);
  pointer-events: none;
}

.join-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 2rem;
  position: relative;
}

.join-card {
  flex: 1;
  min-width: 14rem;
  max-width: 18rem;
  padding: 1.25rem 1.5rem;
  border-radius: 1rem;
  border: 1px solid rgba(255,255,255,0.04);
  background: rgba(255,255,255,0.02);
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.join-card:hover {
  border-color: rgba(var(--accent-rgb), 0.15);
  transform: translateY(-2px);
}

.join-card-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.join-card-value {
  display: inline-block;
  font-size: 1rem;
  font-weight: 600;
  font-family: 'Inter', monospace;
  color: var(--accent);
  padding: 0.25rem 0.75rem;
  border-radius: 0.5rem;
  background: rgba(var(--accent-rgb), 0.06);
}

.join-card-bar {
  width: 0%;
  height: 2px;
  margin-top: 0.75rem;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--purple));
  transition: width 1.2s ease;
}

.join.visible .join-card-bar {
  width: 100%;
}

.join-note {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  border-radius: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.04);
}

.join-note-icon {
  color: var(--purple);
  font-size: 0.8rem;
}

/* ── Footer ── */

.footer {
  position: relative;
  z-index: 2;
  max-width: 60rem;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.footer.visible {
  opacity: 1;
  transform: translateY(0);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-divider {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-muted);
  opacity: 0.3;
}

.footer-domain {
  font-weight: 500;
}

/* ── Responsive ── */

@media (max-width: 640px) {
  .navbar {
    padding: 0.75rem 1.25rem;
  }
  .nav-links {
    gap: 1rem;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .join-cards {
    flex-direction: column;
    align-items: center;
  }
  .hero {
    padding: 5rem 1.25rem 3rem;
  }
  .section {
    padding: 4rem 1.25rem;
  }
}

/* ── Selection ── */

::selection {
  background: rgba(var(--accent-rgb), 0.2);
  color: var(--text);
}

/* ── Scrollbar ── */

::-webkit-scrollbar {
  width: 4px;
}

::-webkit-scrollbar-track {
  background: var(--bg-deep);
}

::-webkit-scrollbar-thumb {
  background: rgba(var(--accent-rgb), 0.15);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(var(--accent-rgb), 0.25);
}