:root {
  /* Google */
  --google-blue: #1a73e8;

  /* BASAN (vert corporate) */
  --basan-green: #0f4c45;

  /* Neutres */
  --text-muted: #6c757d;
  --border-soft: #d1d5db;
  --shadow-soft: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.btn-google {
  background-color: var(--google-blue);
  color: #ffffff;
  border: none;
  font-weight: 500;
  padding: 14px 20px;
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
  transition: all 0.25s ease;
}

.btn-google:hover {
  background-color: #1558c0;
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
}

.btn-google:active {
  transform: translateY(0);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.1);
}

.btn-ldap {
  background-color: #ffffff;
  color: var(--basan-green);
  border: 2px solid var(--basan-green);
  font-weight: 500;
  padding: 13px 20px;
  border-radius: 8px;
  transition: all 0.25s ease;
}

.btn-ldap:hover {
  background-color: rgba(15, 76, 69, 0.06);
  color: var(--basan-green);
  transform: translateY(-1px);
}

.btn-ldap:active {
  background-color: rgba(15, 76, 69, 0.12);
}

.auth-separator {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 18px 0;
}

.auth-card {
  background: #ffffff;
  border-radius: 12px;
  padding: 32px;
  box-shadow: var(--shadow-soft);
  max-width: 450px;
  width: 100%;
}