.signup-container {
      max-width: 440px;
      margin: 0 auto;
      padding: 2rem 1rem;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .signup-card {
      background: var(--color-bg-elevated);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 2.5rem;
    }

    .signup-logo {
      text-align: center;
      margin-bottom: 1.5rem;
    }

    .signup-logo h1 {
      font-family: var(--font-mono);
      font-size: 1.5rem;
      font-weight: 700;
      letter-spacing: 4px;
      color: var(--color-text);
      margin: 0;
    }

    .signup-logo p {
      font-size: 0.875rem;
      color: var(--color-text-muted);
      margin-top: 0.25rem;
    }

    .signup-form {
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
    }

    .signup-field {
      display: flex;
      flex-direction: column;
      gap: 0.25rem;
    }

    .signup-field label {
      font-size: 0.875rem;
      font-weight: 500;
      color: var(--color-text);
    }

    .signup-field input {
      background: var(--color-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 12px 16px;
      font-size: 1rem;
      color: var(--color-text);
      transition: border-color 0.2s;
      box-sizing: border-box;
      width: 100%;
    }

    .signup-field input:focus {
      outline: none;
      border-color: var(--color-accent);
    }

    .signup-field .hint {
      font-size: 0.75rem;
      color: var(--color-text-muted);
    }

    .signup-submit {
      background: var(--color-accent);
      color: #fff;
      border: none;
      border-radius: var(--radius-md);
      padding: 14px;
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      transition: background 0.2s;
      width: 100%;
    }

    .signup-submit:hover {
      opacity: 0.9;
    }

    .signup-submit:disabled {
      opacity: 0.6;
      cursor: not-allowed;
    }

    .signup-error {
      background: rgba(255, 68, 68, 0.1);
      border: 1px solid rgba(255, 68, 68, 0.3);
      border-radius: var(--radius-md);
      padding: 12px;
      color: #ff4444;
      font-size: 0.875rem;
      text-align: center;
      display: none;
    }

    .signup-links {
      text-align: center;
      margin-top: 1.5rem;
      font-size: 0.875rem;
      color: var(--color-text-muted);
    }

    .signup-links a {
      color: var(--color-accent);
      text-decoration: none;
    }

    .signup-links a:hover {
      text-decoration: underline;
    }

    .signup-free-badge {
      display: inline-block;
      background: rgba(255, 107, 0, 0.15);
      color: var(--color-accent);
      font-size: 0.75rem;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 100px;
      margin-top: 0.5rem;
    }

    /* Google button container */
    #google-btn-container {
      width: 100%;
      display: flex;
      justify-content: center;
      min-height: 44px;
    }
    .google-error {
      background: rgba(255, 68, 68, 0.1);
      border: 1px solid rgba(255, 68, 68, 0.3);
      border-radius: var(--radius-md);
      padding: 12px;
      color: #ff4444;
      font-size: 0.875rem;
      text-align: center;
      display: none;
    }
    .signup-divider {
      display: flex;
      align-items: center;
      color: var(--color-text-muted);
      font-size: 0.8rem;
      margin: 1.5rem 0 0 0;
    }
    .signup-divider::before,
    .signup-divider::after {
      content: '';
      flex: 1;
      border-bottom: 1px solid var(--color-border);
    }
    .signup-divider span {
      padding: 0 1rem;
    }

    /* API Key result */
    .api-key-result {
      display: none;
    }

    .api-key-result.visible {
      display: block;
    }

    .api-key-box {
      background: var(--color-bg);
      border: 1px solid var(--color-accent);
      border-radius: var(--radius-md);
      padding: 16px;
      font-family: var(--font-mono);
      font-size: 0.8rem;
      word-break: break-all;
      user-select: all;
      cursor: pointer;
      margin: 1rem 0;
      color: var(--color-text);
    }

    .api-key-warning {
      background: rgba(255, 200, 0, 0.1);
      border: 1px solid rgba(255, 200, 0, 0.3);
      border-radius: var(--radius-md);
      padding: 12px;
      font-size: 0.8rem;
      color: #ffc800;
      margin-bottom: 1rem;
    }

    .copy-btn {
      background: var(--color-accent);
      color: #fff;
      border: none;
      border-radius: var(--radius-md);
      padding: 10px 20px;
      font-size: 0.875rem;
      font-weight: 600;
      cursor: pointer;
      width: 100%;
    }

    .copy-btn:hover {
      opacity: 0.9;
    }

    .next-steps {
      margin-top: 1.5rem;
      padding-top: 1.25rem;
      border-top: 1px solid var(--color-border);
    }

    .next-steps h3 {
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 0.5rem;
    }

    .next-steps ol {
      font-size: 0.8rem;
      color: var(--color-text-muted);
      padding-left: 1.5rem;
      line-height: 1.8;
      list-style: decimal;
    }

    .next-steps code {
      background: var(--color-bg);
      padding: 2px 6px;
      border-radius: 4px;
      font-family: var(--font-mono);
      font-size: 0.75rem;
    }

    .pw-toggle-wrap { position: relative; }
    .pw-toggle { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); background: none; border: none; cursor: pointer; color: var(--color-text-secondary); padding: 4px; }
    .pw-toggle:hover { color: var(--color-text); }

    /* Mobile responsive */
    @media (max-width: 768px) {
      .signup-container {
        min-height: auto;
        padding: 1.5rem 1rem;
        justify-content: flex-start;
        padding-top: max(2rem, env(safe-area-inset-top));
      }
      .signup-card {
        padding: 1.75rem 1.5rem;
      }
      .signup-submit, .copy-btn {
        min-height: 48px;
        font-size: 1rem;
      }
      .signup-field input {
        font-size: 16px; /* prevents iOS zoom-on-focus */
        min-height: 48px;
      }
    }
    @media (max-width: 480px) {
      .signup-card {
        padding: 1.5rem 1.25rem;
        border-radius: var(--radius-md);
      }
      .signup-logo h1 { font-size: 1.3rem; }
      .next-steps ol { font-size: 0.78rem; }
    }