.mqt-container {
    font-family: Arial, sans-serif;
    background-color: #f9f9f9;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    margin: 40px auto;
    border: 1px solid #e1e1e1;
}
.mqt-container h2, .mqt-container h4 {
    text-align: center;
    color: #333;
}
.mqt-container h2 { margin-bottom: 10px; }
.mqt-container h4 { margin-top: 25px; margin-bottom: 5px;}
.mqt-container p {
    text-align: center;
    margin-top: 0;
    margin-bottom: 25px;
    color: #666;
    font-size: 0.9em;
}
.mqt-container .step { display: none; }
.mqt-container input[type="text"],
.mqt-container input[type="email"],
.mqt-container input[type="tel"],
.mqt-container input[type="number"],
.mqt-container textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}
.mqt-container input:focus, .mqt-container textarea:focus {
    border-color: #4CAF50;
    outline: none;
}
.checkbox-group, .radio-group { display: flex; flex-direction: column; }
.checkbox-group label, .radio-group label {
    display: block; background: #fff; padding: 12px;
    margin-bottom: 8px; border-radius: 4px; border: 1px solid #ddd;
    cursor: pointer; transition: background-color 0.3s;
}
.checkbox-group label:hover, .radio-group label:hover { background: #f1f1f1; }
.checkbox-group input, .radio-group input { margin-right: 10px; }
input[type="file"] {
    border: 1px solid #ccc; display: block; width: 100%;
    padding: 10px; border-radius: 4px; background: #fff;
}
.navigation-buttons { overflow: auto; margin-top: 20px; }
#prevBtn, #nextBtn {
    background-color: #4CAF50; color: white; padding: 10px 20px;
    border: none; border-radius: 4px; cursor: pointer;
    font-size: 16px;
}
#prevBtn { float: left; background-color: #bbbbbb; }
#nextBtn { float: right; }
.step-indicator-container { text-align: center; margin-top: 40px; }
.step-indicator {
    height: 15px; width: 15px; margin: 0 5px; background-color: #bbbbbb;
    border: none; border-radius: 50%; display: inline-block;
}
.step-indicator.active { background-color: #4CAF50; }
.step-indicator.finish { background-color: #2e7d32; }

.vin-separator {
    text-align: center;
    margin: 20px 0;
    font-weight: bold;
    color: #888;
    text-transform: uppercase;
}
.field-divider {
    border: 0;
    height: 1px;
    background: #e0e0e0;
    margin: 30px 0;
}

/* --- Hint & Modal Styles --- */

.hint-trigger {
    display: inline-block;
    width: 20px;
    height: 20px;
    line-height: 20px;
    text-align: center;
    background-color: #888;
    color: white;
    border-radius: 50%;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    margin-left: 5px;
    vertical-align: middle;
}

.modal-overlay {
    display: none; /* Hidden by default */
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.7);
}

.modal-overlay.show {
    display: block; /* Shown with JS */
}

.modal-content {
    background-color: #fefefe;
    margin: 10% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 90%;
    max-width: 500px;
    border-radius: 8px;
    position: relative;
    text-align: center;
}

.modal-close {
    color: #aaa;
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.modal-close:hover,
.modal-close:focus {
    color: black;
}

.modal-content img {
    max-width: 100%;
    height: auto;
    margin-top: 15px;
}