.book-appointment-button {
            background: linear-gradient(to right, #6a11cb, #9333ea);
            color: white;
            padding: 15px 30px;
            border: none;
            border-radius: 8px;
            font-size: 18px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
            margin: 20px 0;
        }
        .book-appointment-button:hover {
            background: linear-gradient(to right, #580ead, #7e22ce);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
        }
        .popup-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.7);
            display: none;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            opacity: 0;
            transition: opacity 0.3s ease-in-out;
        }
        .popup-overlay.active {
            display: flex;
            opacity: 1;
        }
        .popup-container {
            display: flex;
            background-color: #fff;
            border-radius: 10px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
            max-width: 800px;
            width: 90%;
            overflow: hidden;
            transform: scale(0.95);
            transition: transform 0.3s ease-in-out;
        }
        .popup-overlay.active .popup-container {
            transform: scale(1);
        }
        .popup-left {
            flex: 1;
            background-color: #2c2c3e;
            color: #fff;
            padding: 40px 30px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .popup-left h2 {
            font-size: 24px;
            margin-top: 0;
            line-height: 1.3;
        }
        .popup-left ul {
            list-style: none;
            padding: 0;
            margin: 20px 0;
        }
        .popup-left ul li {
            margin-bottom: 15px;
            font-size: 14px;
            display: flex;
            align-items: flex-start;
        }
        .popup-left ul li .icon {
            margin-right: 10px;
            color: #a855f7;
            font-size: 16px;
        }
        .popup-left-image-container {
            text-align: center;
            margin-top: auto;
            padding-top: 20px;
        }
        .popup-left-image-container img {
            max-width: 100%;
            height: auto;
            max-height: 250px;
        }
        .popup-right {
            flex: 1.2;
            padding: 30px 30px 40px 30px;
            background-color: #ffffff;
            position: relative;
        }
        .popup-close-btn {
            position: absolute;
            top: 15px;
            right: 15px;
            font-size: 24px;
            color: #888;
            cursor: pointer;
            text-decoration: none;
            line-height: 1;
            z-index: 10;
        }
        .popup-close-btn:hover {
            color: #333;
        }
        .popup-right h3 {
            font-size: 22px;
            color: #333;
            margin-top: 0;
            margin-bottom: 25px;
            padding-right: 25px;
            position: relative;
        }
        .popup-right h3::before {
            content: "";
            position: absolute;
            left: 0;
            bottom: -8px;
            width: 40px;
            height: 3px;
            background-color: #555;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group input[type="text"], input[type="tel"],
        .form-group select#topic {
            width: 100%;
            height: 50px;
            padding: 0 12px;
            border: 1px solid #ddd;
            border-radius: 5px;
            box-sizing: border-box;
            font-size: 14px;
        }
        .form-group select#topic {
            appearance: none;
            -webkit-appearance: none;
            -moz-appearance: none;
            background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23333' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
            background-repeat: no-repeat;
            background-position: right 12px center;
            background-size: 1em;
            padding-right: 30px;
            margin-top: 10px;
        }
        .phone-input-group .iti.iti--allow-dropdown {
            width: 100%;
            display: flex;
            align-items: center;
        }
        .phone-input-group .iti__selected-flag {
            background-color: #f8f8f8 !important;
            border: 1px solid #ddd !important;
            border-radius: 5px !important;
            padding: 0 10px !important;
            margin-right: 8px !important;
            height: 45px !important;
            box-sizing: border-box !important;
            display: flex !important;
            align-items: center !important;
            min-width: 65px;
            z-index: 1;
            margin-top: 1px;
        }
        .phone-input-group .iti__selected-dial-code {
            display: none !important;
        }
        .phone-input-group input#phone.iti__tel-input {
            flex-grow: 1 !important;
            height: 40px !important;
            padding: 0 12px !important;
            border: 1px solid #ddd !important;
            border-radius: 5px !important;
            font-size: 14px !important;
            margin-left: 0 !important;
            z-index: 0;
        }
        .submit-btn {
            width: 100%;
            padding: 12px;
            background: linear-gradient(to right, #6a11cb, #9333ea);
            color: white;
            border: none;
            border-radius: 5px;
            font-size: 16px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        .submit-btn:hover {
            background: linear-gradient(to right, #580ead, #7e22ce);
        }
        .terms-text {
            font-size: 12px;
            color: #777;
            margin-top: 15px;
            text-align: center;
        }
        .terms-text a {
            color: #6a11cb;
            text-decoration: none;
        }
        .terms-text a:hover {
            text-decoration: underline;
        }
        @media (max-width: 768px) {
            .popup-container { flex-direction: column; max-width: 400px; max-height: 90vh; overflow-y: auto; }
            .popup-left { padding: 30px 20px; }
            .popup-left-image-container img { max-height: 180px; }
            .popup-right { padding: 30px 20px 40px 20px; }
        }
        @media (max-width: 480px) {
             .popup-left-image-container { display: none; }
             .popup-left { padding-bottom: 20px; }
            .phone-input-group .iti.iti--allow-dropdown { flex-direction: column; }
            .phone-input-group .iti__selected-flag { width: 100%; margin-right: 0; margin-bottom: 10px; justify-content: center; }
            .phone-input-group input#phone.iti__tel-input { width: 100% !important; }
        }