/* Electric blue on black — responsive, accessible, and fast */
:root {
  --bg: #0b0f14;
  --panel: #0f141b;
  --blue: #08a9ff; /* electric */
  --blue-strong: #00A2FF;
  --muted: #c8d2dc;
  --shadow: 0 10px 40px rgba(0, 162, 255, 0.25);
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 1200px at 50% 40%, rgba(0,162,255,0.12), transparent 60%), var(--bg);
  color: white;
  display: grid;
  place-items: center;
  line-height: 1.5;
}

.wrap {
  width: min(92vw, 960px);
  display: grid;
  gap: 28px;
  justify-items: center;
}

.card {
  width: 100%;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.00)) , var(--panel);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 24px;
  padding: clamp(24px, 4vw, 48px);
  text-align: center;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.logo {
  width: clamp(84px, 20vw, 140px);
  aspect-ratio: 1 / 1;
  display: block;
  margin: 0 auto 12px;
  filter: drop-shadow(0 0 22px rgba(0,162,255,0.55));
}

h1 {
  margin: 6px 0 10px;
  font-size: clamp(22px, 4.6vw, 44px);
  letter-spacing: 0.2px;
}

.lead {
  margin: 0 auto 18px;
  max-width: 46ch;
  color: var(--muted);
}

.progress {
  position: relative;
  height: 8px;
  width: min(520px, 92%);
  margin: 18px auto 12px;
  background: rgba(255,255,255,0.08);
  border-radius: 999px;
  overflow: hidden;
}

.progress .bar {
  position: absolute;
  inset: 0;
  width: 45%;
  background: linear-gradient(90deg, transparent 0%, var(--blue) 35%, var(--blue-strong) 50%, var(--blue) 65%, transparent 100%);
  animation: load 2.8s infinite linear;
  border-radius: inherit;
  filter: blur(0.4px);
  will-change: transform;
  transform: translate3d(-120%, 0, 0);
}

@keyframes load {
  0% { transform: translate3d(-120%, 0, 0); }
  100% { transform: translate3d(120%, 0, 0); }
}

.btn {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,162,255,0.12);
  color: white;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.15s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0,162,255,0.35);
  border-color: rgba(0,162,255,0.6);
}

.footer {
  opacity: 0.7;
  font-size: 0.95rem;
}

/* small screens */
@media (max-width: 420px) {
  .lead { font-size: 0.98rem; }
  .btn { width: 100%; }
}

/* prefers-reduced-motion: reduce animations */
@media (prefers-reduced-motion: reduce) {
  .progress .bar { animation: none; width: 55%; }
}