body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
  }

  .auth-container {
    background: var(--card-solid);
    border-radius: 1rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 100%;
    padding: 3rem;
  }

  .logo {
    text-align: center;
    margin-bottom: 2rem;
  }

  .logo-image {
    max-width: 200px;
    height: auto;
    margin-bottom: 0.5rem;
  }

  .logo p {
    color: var(--text-secondary);
    font-size: 0.875rem;
  }

  .tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-subtle);
  }

  .tab {
    flex: 1;
    padding: 0.75rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    margin-bottom: -2px;
    transition: all 0.2s;
  }

  .tab.active {
    color: #667eea;
    border-bottom-color: #667eea;
  }

  .divider {
    text-align: center;
    margin: 1.5rem 0;
    position: relative;
  }

  .divider::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 100%;
    height: 1px;
    background: var(--border-subtle);
  }

  .divider span {
    background: var(--card-solid);
    padding: 0 1rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    position: relative;
  }

  .link-button {
    background: none;
    border: none;
    color: #667eea;
    cursor: pointer;
    font-size: 0.875rem;
    text-decoration: underline;
    padding: 0;
  }

  .link-button:hover {
    color: #5568d3;
  }

  .text-center {
    text-align: center;
  }

  .phone-signin-panel {
    margin-top: 0.75rem;
    padding: 1rem;
    border: 1px solid var(--control-border);
    border-radius: 0.75rem;
  }

  .phone-form-link {
    display: block;
    margin: 1rem auto 0;
  }

  #phone-recaptcha:not(:empty) {
    margin-bottom: 1rem;
    overflow-x: auto;
  }

@media (max-width: 760px) {
body:has(.auth-container) { padding: 1rem; display: block; }
body .auth-container { padding: 1.5rem; margin: 1rem auto; box-shadow: none; }
}
body:has(.auth-container) { display: block; padding: 2rem 1rem; }
body .auth-container { max-width: 460px; padding: 2rem; margin: 0 auto; border: 1px solid var(--border-subtle); box-shadow: 0 8px 30px rgb(0 0 0 / 5%); }
.auth-container .logo { margin-bottom: 1.25rem; }
.auth-container .logo-image { width: 140px; max-width: 100%; }
.auth-container .tabs { margin-bottom: 1.5rem; }
.auth-container .tab.active { color: var(--primary); border-color: var(--primary); }
.auth-container .btn-google { background: var(--card-solid); color: var(--text); border: 1px solid var(--border); }
.auth-container .btn { width: 100%; }
.auth-container .btn + .btn { margin-top: .75rem; }
.auth-container .divider { margin: 1.25rem 0; }
.auth-container .link-button { color: var(--primary); }
.auth-container .form-group { margin-bottom: 1rem; }
@media (max-width: 760px) {
body:has(.auth-container) { padding: 1rem; }
body .auth-container { padding: 1.25rem; margin: 0 auto; box-shadow: none; }
.auth-container .logo-image { width: 110px; }
}

.auth-container { min-width: 0; }