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

body {
  font-family: "Segoe UI", system-ui, sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e3a5f 0%, #2d5a87 50%, #1a472a 100%);
  color: #1a1a2e;
}

.login-card {
  background: #fff;
  border-radius: 16px;
  padding: 2rem 2.25rem;
  max-width: 400px;
  width: 92%;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
  text-align: center;
}

.login-card h1 {
  font-size: 1.5rem;
  margin-bottom: 0.35rem;
}

.sub {
  color: #555;
  margin-bottom: 1.5rem;
}

.login-error {
  background: #fee2e2;
  color: #991b1b;
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  text-align: left;
}

.btn-google {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  background: #fff;
  border: 2px solid #dadce0;
  color: #3c4043;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: background 0.15s, box-shadow 0.15s;
}

.btn-google:hover {
  background: #f8f9fa;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.g-icon {
  display: inline-flex;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, #4285f4, #34a853 50%, #fbbc05 70%, #ea4335);
  color: #fff;
  font-weight: 800;
  font-size: 0.85rem;
  align-items: center;
  justify-content: center;
}

.hint {
  margin-top: 1.25rem;
  font-size: 0.82rem;
  color: #64748b;
  line-height: 1.45;
}