:root {
  --bg: #07130f;
  --ink: #f2f2f4;
  --muted: #9a9aa3;
  --google: #fff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: Inter, system-ui, sans-serif;
  background: radial-gradient(900px 480px at 50% -10%, rgba(11, 110, 79, 0.22), transparent 55%), var(--bg);
}
.gate {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
}
.gate-inner { text-align: center; max-width: 22rem; }
.google-circle {
  width: clamp(7.5rem, 28vw, 9.5rem);
  height: clamp(7.5rem, 28vw, 9.5rem);
  border-radius: 999px;
  border: 0;
  cursor: pointer;
  background: var(--google);
  color: #1f1f1f;
  display: inline-grid;
  place-items: center;
  box-shadow: 0 18px 50px rgba(0,0,0,.35);
  transition: transform .18s ease, box-shadow .18s ease;
}
.google-circle:hover { transform: scale(1.04); box-shadow: 0 22px 60px rgba(0,0,0,.42); }
.google-circle:disabled { opacity: .7; cursor: wait; transform: none; }
.google-circle svg { width: 42%; height: 42%; }
.gate h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); margin: 1.4rem 0 .5rem; }
.gate p { color: var(--muted); margin: 0 0 1.5rem; line-height: 1.45; }
.err { color: #ff8f8f; min-height: 1.4rem; font-size: .9rem; margin-top: 1rem; }