:root{
  --bg: radial-gradient(1200px 800px at 10% -10%, rgba(65,193,230,.15), transparent 60%),
        radial-gradient(1200px 800px at 110% 110%, rgba(252,127,11,.12), transparent 60%),
        linear-gradient(180deg, #0b1220 0%, #0f172a 100%);
  --glass-bg: rgba(255,255,255,.06);
  --glass-border: rgba(255,255,255,.12);
}

*{ box-sizing: border-box; }
html, body { height: 100%; }
body{
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: #e5e7eb;
  background: var(--bg);
  background-attachment: fixed;
}

.bg-surface{ background: transparent; }

.card.glass{
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
}

.logo{ width: 44px; height: 44px; }

.display-6.fw-extrabold{ font-weight: 800; }

.countdown .timebox{
  text-align: center;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  padding: .75rem 1rem;
  border-radius: 1rem;
  min-width: 86px;
}
.countdown .num{
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1;
}
.countdown .label{
  font-size: .75rem;
  color: #a3a3a3;
  margin-top: .25rem;
}

.btn-icon svg{ margin-top: -2px; }
.btn-primary{
  background: linear-gradient(90deg, #41c1e6, #fc7f0b);
  border: none;
}
.btn-primary:hover{ opacity: .95; }

.hero-side{
  background:
    radial-gradient(500px 400px at 80% 10%, rgba(65,193,230,.15), transparent 60%),
    radial-gradient(600px 500px at 0% 100%, rgba(252,127,11,.12), transparent 60%);
  border-left: 1px solid var(--glass-border);
}
.hero-img{
  max-height: 320px;
  filter: drop-shadow(0 16px 40px rgba(0,0,0,.25));
  animation: float 6s ease-in-out infinite;
}
@keyframes float{
  0%,100%{ transform: translateY(0) }
  50%{ transform: translateY(-6px) }
}

@media (max-width: 991.98px){
  .hero-side{ border-left: none; border-top: 1px solid var(--glass-border); }
}