:root {
  --bg-a: #0f172a;
  --bg-b: #1e293b;
  --accent: #f59e0b;
  --text: #e2e8f0;
  --muted: #cbd5e1;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background: radial-gradient(circle at 20% 20%, #334155 0%, var(--bg-a) 40%),
    linear-gradient(130deg, var(--bg-a), var(--bg-b));
  color: var(--text);
}

.hero {
  width: min(92vw, 720px);
  padding: 2.2rem;
  border: 1px solid #475569;
  border-radius: 22px;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.3);
  animation: rise 500ms ease-out;
}

.badge {
  display: inline-block;
  margin: 0 0 0.9rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(245, 158, 11, 0.2);
  color: #fde68a;
  font-weight: 700;
  font-size: 0.85rem;
}

h1 {
  margin: 0;
  line-height: 1.12;
  font-size: clamp(1.7rem, 3.6vw, 2.7rem);
}

.subtitle {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0.95rem 0 1.4rem;
}

button {
  border: none;
  border-radius: 12px;
  padding: 0.78rem 1.15rem;
  font-size: 1rem;
  font-weight: 700;
  color: #1f2937;
  background: linear-gradient(135deg, #fbbf24, var(--accent));
  cursor: pointer;
  transition: transform 150ms ease, box-shadow 150ms ease;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(245, 158, 11, 0.25);
}

.message {
  min-height: 1.4rem;
  margin-top: 1rem;
  color: #fde68a;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}