* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  color: #e2e8f0;
  -webkit-font-smoothing: antialiased;
}

.card {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 16px;
  padding: 48px 40px;
  width: 100%;
  max-width: 360px;
  text-align: center;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
}

.icon {
  font-size: 48px;
  line-height: 1;
  margin-bottom: 16px;
}

h1 {
  font-size: 22px;
  font-weight: 700;
  color: #f1f5f9;
  margin-bottom: 6px;
}

.sub {
  font-size: 14px;
  color: #94a3b8;
  margin-bottom: 32px;
  line-height: 1.45;
}

.btn-google {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: #fff;
  color: #1e293b;
  padding: 14px 24px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  width: 100%;
  transition: background 0.15s, transform 0.1s;
}

.btn-google:hover {
  background: #f1f5f9;
  transform: translateY(-1px);
}

.btn-google:active { transform: translateY(0); }

.btn-google svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: block;
}

.error {
  background: #450a0a;
  border: 1px solid #7f1d1d;
  color: #fca5a5;
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 13px;
  margin-bottom: 20px;
  text-align: left;
  line-height: 1.4;
}