:root {
  --bg: #0b1020;
  --card: #121a33;
  --text: #e9ecf1;
  --muted: #a7b0c2;
  --accent: #6ea8fe;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(1200px 800px at 20% 10%, #1a2a5a 0%, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.site-header, .content {
  width: min(680px, 100%);
  background: color-mix(in srgb, var(--card) 92%, black);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 20px 22px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.site-header {
  margin-bottom: 16px;
}

h1 {
  margin: 0 0 6px;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 0;
  color: var(--muted);
}

button {
  appearance: none;
  border: 0;
  border-radius: 12px;
  padding: 12px 16px;
  font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: #081022;
  transition: transform 120ms ease, filter 120ms ease;
}

button:hover { filter: brightness(1.05); }
button:active { transform: translateY(1px); }

#status {
  margin: 12px 0 0;
  color: var(--muted);
  min-height: 1.2em;
}