.pstn-subscribe-main {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pstn-subscribe-section {
    background: #fff;
    padding: 2rem 2.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 16px rgba(0,0,0,0.07);
    max-width: 400px;
    width: 100%;
    text-align: center;
}
.pstn-subscribe-section h1 {
    margin-bottom: 1rem;
}
.pstn-subscribe-section p {
    margin-bottom: 2rem;
    color: #555;
}
.pstn-fullpage-optin .pstn-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: stretch;
}
.pstn-fullpage-optin input[type="email"] {
    width: 100%;
    padding: 0.75rem;
    border-radius: 5px;
    border: 1px solid #ccc;
    font-size: 1rem;
}
.pstn-fullpage-optin button {
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    background: #0073aa;
    color: #fff;
    border: none;
    font-weight: bold;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.2s;
}
.pstn-fullpage-optin button:hover {
    background: #005177;
}
.pstn-fullpage-optin .pstn-success {
    padding: 1rem;
    border-left: 4px solid #0073aa;
    background: #e6f4fa;
    color: #0073aa;
    border-radius: 5px;
    margin-bottom: 1rem;
}

.pstn-shortcode-form *,
.pstn-shortcode-form *::before,
.pstn-shortcode-form *::after {
    box-sizing: border-box;
}

.pstn-shortcode-form .pstn-flex-container {
    display: flex;
    gap: 15px;
    align-items: center;
}

.pstn-email-form {
    flex: 1;
    min-width: 250px;
}

.pstn-submit-button {
    flex: 0 1 auto;
    min-width: 150px;
}

@media (max-width: 768px) {
    .pstn-shortcode-form .pstn-flex-container {
        flex-direction: column;
        align-items: center;
    }
    
    .pstn-shortcode-form .pstn-email-form,
    .pstn-shortcode-form .pstn-submit-button {
        flex: none;
        width: 100%;
        min-width: 0;
    }
    
    .pstn-shortcode-form .pstn-email-form input,
    .pstn-shortcode-form .pstn-submit-button .button {
        width: 100%;
    }
}

.pstn-submit-button .button {
    background: #000000;
    color: #fff;
    border: none;
    font-weight: bold;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.2s;
    width: 100%;
    height: 40px;
    display: block;
    text-align: center;
    line-height: 40px;
    padding: 0 30px;
}