:root {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color-scheme: dark;
  background: #08111f;
  color: #f7f9fc;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.22), transparent 35%),
    radial-gradient(circle at bottom right, rgba(129, 140, 248, 0.18), transparent 32%),
    #08111f;
}

.card {
  width: min(100%, 560px);
  padding: 48px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 28px;
  background: rgba(15, 23, 42, 0.78);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(18px);
}

.eyebrow {
  margin: 0 0 12px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: #7dd3fc;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 3.4rem);
  line-height: 1.08;
}

.counter {
  margin-top: 38px;
  font-size: clamp(4.5rem, 18vw, 8rem);
  font-weight: 900;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: #ffffff;
}

.label {
  margin: 8px 0 32px;
  color: #a8b3c7;
}

button {
  width: 100%;
  padding: 16px 22px;
  border: 0;
  border-radius: 14px;
  font: inherit;
  font-weight: 800;
  color: #07111f;
  background: linear-gradient(135deg, #7dd3fc, #a5b4fc);
  cursor: pointer;
  transition: transform 150ms ease, opacity 150ms ease;
}

button:hover {
  transform: translateY(-2px);
}

button:disabled {
  cursor: wait;
  opacity: 0.65;
  transform: none;
}

.status {
  min-height: 24px;
  margin: 18px 0;
  color: #cbd5e1;
}

code {
  color: #93c5fd;
}

@media (max-width: 520px) {
  .card {
    padding: 32px 22px;
  }
}