/* Animated blue gradient background and centered title styling */
:root {
  --bg1: #012a4a;
  --bg2: #013a63;
  --bg3: #014f86;
  --accent: #1fb6ff;
  --panel: rgba(255, 255, 255, 0.08);
  --panel-border: rgba(255, 255, 255, 0.18);
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
  color: #fff;
  overflow-x: hidden;
  overflow-y: auto;
  background: linear-gradient(120deg, var(--bg1), var(--bg2), var(--bg3));
  background-size: 400% 400%;
  animation: gradient 12s ease infinite;
}

.page-shell {
  position: relative;
  min-height: 100vh;
  z-index: 2;
}

.wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px 140px;
}

.hero {
  width: min(940px, 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

#title {
  margin: 0;
  font-weight: 900;
  font-size: clamp(36px, 12vw, 120px);
  letter-spacing: 0.03em;
  color: whitesmoke;
  text-align: center;
  text-transform: uppercase;
  text-shadow: 0 8px 30px rgba(0,0,0,0.6), 0 0 30px rgba(31,182,255,0.08);
  transform-origin: center;
  animation: float 3.6s ease-in-out infinite, glow 2.4s ease-in-out infinite;
}

.btn {
  margin: 18px auto 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  color: #013a63;
  border: 1px solid rgba(255, 255, 255, 0.7);
  padding: 14px 22px;
  border-radius: 12px;
  font-weight: 800;
  font-size: 1.05rem;
  cursor: pointer;
  box-shadow: 0 18px 30px rgba(0,0,0,0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  z-index: 4;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 34px rgba(0,0,0,0.25);
}

.features {
  width: min(680px, 92vw);
  margin-top: 28px;
  padding: 24px 28px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 22px;
  box-shadow: 0 22px 60px rgba(1, 19, 36, 0.28);
  backdrop-filter: blur(10px);
}

.features h2 {
  margin: 0 0 18px;
  font-size: clamp(1.3rem, 2vw, 2rem);
  color: #eefbff;
}

.features ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
  text-align: left;
}

.features li {
  position: relative;
  padding-left: 28px;
  color: rgba(255, 255, 255, 0.92);
  line-height: 1.6;
  font-size: clamp(0.96rem, 1.5vw, 1.08rem);
}

.features li::before {
  content: '✦';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-size: 1.1rem;
}

.char { display: inline-block; }

@keyframes gradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes float {
  0% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-10px) scale(1.02); }
  100% { transform: translateY(0) scale(1); }
}

@keyframes glow {
  0% { text-shadow: 0 8px 30px rgba(0,0,0,0.6), 0 0 6px rgba(31,182,255,0.06); }
  50% { text-shadow: 0 10px 40px rgba(0,0,0,0.7), 0 0 26px rgba(31,182,255,0.35); }
  100% { text-shadow: 0 8px 30px rgba(0,0,0,0.6), 0 0 6px rgba(31,182,255,0.06); }
}

@keyframes wave {
  0% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
  100% { transform: translateY(0); }
}

@media (max-width: 420px) {
  #title { letter-spacing: 0.05em; }
  .features { padding: 20px 18px; }
}

#snow-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.android-badge {
  position: fixed;
  right: 28px;
  top: 54%;
  transform: translateY(90px);
  width: clamp(84px, 7.8vw, 120px);
  height: clamp(84px, 7.8vw, 120px);
  z-index: 3;
  display: grid;
  place-items: center;
  padding: 12px;
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(8px);
  box-shadow: 0 16px 45px rgba(0,0,0,0.18);
}

.android-badge svg {
  width: 100%;
  height: 100%;
}