:root {
    --qpc-blue: #245378;
    --qpc-green: #7db749;
    --qpc-black: #1a1a1a;
    --qpc-white: #ffffff;
    --qpc-gray-bg: #f8f9fa;
    --qpc-gray-border: #e0e0e0;
}

/* Stili per la validazione dei campi */
.qpc-input-group input.input-error {
    border-color: #d9534f !important;
    background-color: #fff8f8;
}

.qpc-error {
    color: #d9534f;
    font-size: 13px;
    font-weight: 600;
    margin-top: 4px;
    display: none;
}

/* Prevenzione Layout Shift Globale */
.qpc-modal-box *, 
.qpc-modal-box *::before, 
.qpc-modal-box *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Pulsante Trigger Shortcode */
.qpc-trigger-wrapper {
    display: inline-block;
}

.qpc-btn-trigger {
    background-color: var(--qpc-green);
    color: var(--qpc-white);
    border: 2px solid transparent;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 700;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.qpc-btn-trigger:hover {
    background-color: #6ca53b;
}

/* Overlay Modale */
.qpc-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.65);
    z-index: 99999;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

/* Box Modale */
.qpc-modal-box {
    position: relative;
    background-color: var(--qpc-white);
    width: 100%;
    max-width: 580px;
    border-radius: 12px;
    padding: 35px 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.25);
    color: var(--qpc-black);
    max-height: 90vh;
    overflow-y: auto;
}

/* Pulsante di Chiusura X */
.qpc-close-btn {
    position: absolute;
    top: 15px;
    right: 20px;
    background: none;
    border: none;
    font-size: 28px;
    line-height: 1;
    color: var(--qpc-black);
    cursor: pointer;
    transition: color 0.2s;
    z-index: 10;
}

.qpc-close-btn:hover {
    color: var(--qpc-green);
}

/* Header & Progress Bar */
.qpc-header h2 {
    color: var(--qpc-blue);
    font-size: 22px;
    margin-bottom: 6px;
    text-align: center;
    padding-right: 20px;
}

.qpc-subtitle {
    font-size: 14px;
    color: #666;
    text-align: center;
    margin-bottom: 20px;
}

.qpc-progress-bar-bg {
    width: 100%;
    height: 6px;
    background-color: #eee;
    border-radius: 3px;
    margin-bottom: 25px;
    overflow: hidden;
}

.qpc-progress-bar-fill {
    height: 100%;
    width: 20%;
    background-color: var(--qpc-green);
    transition: width 0.3s ease;
}

/* Steps */
.qpc-step {
    display: none;
}

.qpc-step.active {
    display: block;
}

.qpc-question {
    font-size: 18px;
    color: var(--qpc-blue);
    margin-bottom: 18px;
}

/* Pulsanti Opzione */
.qpc-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.qpc-btn-option {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 14px 18px;
    background-color: var(--qpc-gray-bg);
    border: 2px solid var(--qpc-gray-border);
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--qpc-black);
    cursor: pointer;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.qpc-btn-option:hover, 
.qpc-btn-option:focus {
    border-color: var(--qpc-blue);
    background-color: var(--qpc-white);
    box-shadow: 0 2px 8px rgba(36, 83, 120, 0.15);
}

/* Form Inputs */
.qpc-input-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.qpc-input-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--qpc-gray-border);
    border-radius: 6px;
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s;
}

.qpc-input-group input:focus {
    border-color: var(--qpc-blue);
}

/* Pulsanti di Navigazione (Avanti/Indietro) */
.qpc-nav-buttons {
    display: flex;
    gap: 12px;
    width: 100%;
}

.qpc-next-btn {
    flex: 2;
    background-color: var(--qpc-blue);
    color: var(--qpc-white);
    border: none;
    padding: 14px;
    font-size: 15px;
    font-weight: 700;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.qpc-next-btn:hover {
    background-color: #1a3c58;
}

.qpc-prev-btn {
    flex: 1;
    background-color: transparent;
    color: var(--qpc-black);
    border: 2px solid var(--qpc-gray-border);
    padding: 14px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
}

.qpc-prev-btn:hover {
    border-color: var(--qpc-blue);
    background-color: var(--qpc-gray-bg);
}

.qpc-back-footer {
    margin-top: 18px;
    text-align: center;
}

.qpc-prev-btn-link {
    background: none;
    border: none;
    color: #666;
    font-size: 13px;
    cursor: pointer;
    text-decoration: underline;
    transition: color 0.2s;
}

.qpc-prev-btn-link:hover {
    color: var(--qpc-blue);
}

.qpc-error {
    color: #d9534f;
    font-size: 13px;
    display: none;
}

/* Success Box */
.qpc-success-box {
    text-align: center;
    padding: 10px 0;
}

.qpc-success-icon {
    width: 60px;
    height: 60px;
    background-color: var(--qpc-green);
    color: var(--qpc-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto 15px;
}

.qpc-success-box h3 {
    color: var(--qpc-blue);
    margin-bottom: 12px;
}

.qpc-success-box p {
    font-size: 15px;
    color: #555;
    line-height: 1.5;
    margin-bottom: 25px;
}

.qpc-close-final-btn {
    width: 100%;
    background-color: var(--qpc-blue);
    color: var(--qpc-white);
    border: none;
    padding: 14px;
    font-size: 16px;
    font-weight: 700;
    border-radius: 6px;
    cursor: pointer;
}

/* ==========================================================================
   ADATTAMENTO MOBILE (RESPONSIVE)
   ========================================================================== */
@media (max-width: 600px) {
    .qpc-overlay {
        padding: 12px;
    }

    .qpc-modal-box {
        padding: 25px 18px;
        border-radius: 10px;
        max-height: 95vh;
    }

    .qpc-header h2 {
        font-size: 18px;
    }

    .qpc-subtitle {
        font-size: 13px;
        margin-bottom: 15px;
    }

    .qpc-question {
        font-size: 16px;
        margin-bottom: 14px;
    }

    .qpc-btn-option {
        padding: 12px 14px;
        font-size: 14px;
    }

    .qpc-nav-buttons {
        flex-direction: column-reverse;
        gap: 10px;
    }

    .qpc-prev-btn, 
    .qpc-next-btn {
        width: 100%;
        flex: auto;
        padding: 12px;
    }

    .qpc-close-btn {
        top: 10px;
        right: 15px;
        font-size: 26px;
    }
}