.wpsp-packages-wrapper { max-width: 960px; margin: 20px auto; }
        .wpsp-packages-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
        .wpsp-package-item { border: 1px solid #ddd; padding: 20px; text-align: center; border-radius: 5px; }
        .wpsp-package-title { font-size: 1.5em; margin-top: 0; }
        .wpsp-package-price { font-size: 2em; font-weight: bold; margin: 10px 0; color: #0073aa; }
        .wpsp-package-duration { color: #666; margin-bottom: 20px; }
        .wpsp-buy-now-btn { background-color: #0085ba; color: #fff; border: none; padding: 10px 20px; cursor: pointer; border-radius: 3px; font-size: 1em; transition: background-color 0.3s; }
        .wpsp-buy-now-btn:hover { background-color: #0073aa; }
        .wpsp-buy-now-btn.wpsp-loading { cursor: wait; background-color: #999; }
        .wpsp-coupon-area { margin-top: 20px; text-align: center; }
        #wpsp_coupon_code { padding: 8px; width: 250px; max-width: 80%; }
        .wpsp-messages { margin-top: 15px; text-align: center; }
        .wpsp-message-error { color: #d9534f; border: 1px solid #d9534f; padding: 10px; border-radius: 3px; }
        .wpsp-message-success { color: #5cb85c; }
        .wpsp-login-prompt { margin-top: 15px; }