:root {
            --primary-color: #00bfa5; /* Cor principal (ex: verde) */
            --whatsapp-color: #25d366; /* Cor do WhatsApp */
            --dark-bg: #121212; /* Fundo escuro */
            --text-light: #ffffff;
            --text-secondary: #b3b3b3;
        }
        body, html { margin: 0; padding: 0; width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; background-color: var(--dark-bg); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: var(--text-light);}
        .retention-container { width: 100%; max-width: 450px; height: 100vh; max-height: 90vh; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 20px; box-sizing: border-box; position: relative; }
        .video-wrapper { position: relative; width: 100%; padding-top: 177.78%; /* 9:16 */ border-radius: 16px; overflow: hidden; background-color: #000; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5); }
        .video-wrapper iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0; }
        #unmute-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.6); display: flex; flex-direction: column; align-items: center; justify-content: center; cursor: pointer; z-index: 10; transition: opacity 0.3s ease; }
        #unmute-button { background-color: var(--primary-color); color: var(--text-light); border: none; border-radius: 50px; padding: 15px 30px; font-size: 1.1rem; font-weight: bold; cursor: pointer; text-transform: uppercase; letter-spacing: 0.5px; box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3); transition: transform 0.2s ease, background-color 0.2s ease; }
        #unmute-button:hover { transform: scale(1.05); background-color: #00a08a; }
        #unmute-overlay h3 { font-size: 1.3rem; margin-bottom: 20px; text-align: center; padding: 0 10px; }
        .cta-container { display: none; flex-direction: column; width: 100%; margin-top: 25px; gap: 15px; animation: fadeIn 0.5s ease 0.2s forwards; opacity: 0; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
        .cta-button { display: flex; align-items: center; justify-content: center; padding: 18px 20px; text-decoration: none; color: var(--text-light); border-radius: 12px; font-size: 1.1rem; font-weight: 600; text-align: center; transition: transform 0.2s ease, opacity 0.2s ease; gap: 10px; }
        .cta-button:hover { transform: scale(1.02); opacity: 0.9; }
        .cta-button.schedule { background-color: var(--primary-color); }
        .cta-button.whatsapp { background-color: var(--whatsapp-color); }
        .final-cancel-link { display: none; margin-top: 20px; text-align: center; animation: fadeIn 0.5s ease 0.5s forwards; opacity: 0; }
        .final-cancel-link a { color: var(--text-secondary); text-decoration: underline; font-size: 0.9rem; cursor: pointer; }
        .final-cancel-link a:hover { color: var(--text-light); }