css
html {
    box-sizing: border-box;
    -webkit-text-size-adjust: 100%;
    font-family: 'Poppins', sans-serif;
}
*, *:before, *:after {
    box-sizing: inherit;
}
body {
    margin: 0;
}

/* === NEW TYPOGRAPHY & COLOR STYLES === */
h1, h2, h3, h4 {
    font-weight: 500;
    color: #14171c; /* NEW Title color */
}

h1 {
    font-size: 3.6rem;
    line-height: 1.1em;
    margin-bottom: 2rem;
    margin-top: 0;
}

h2 {
    font-size: 2rem;
    line-height: 1.2em;
}

h3 {
    font-size: 1.6rem;
    line-height: 1.25em;
}

p {
    font-weight: 300;
    color: #737579; /* NEW Paragraph color */
}

.model-specs {
    font-size: 1.1rem;
    color: #737579;
    margin-top: -1.5rem;
    margin-bottom: 2rem;
    font-weight: 300;
}


.config {
    width: 100%;
    height: 100%;
    display: flex;
    position: relative;
    flex-direction: row;
}
.config .left-images {
    width: 70vw;
    height: 100vh;
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    align-self: flex-start;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.config .left-images .image-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.config .left-images .image-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 0;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    visibility: hidden;
}

.config .left-images .image-wrapper img.object-fit-contain {
    object-fit: contain !important;
}

.config .left-images .image-wrapper img.active-sticky-image {
    opacity: 1;
    visibility: visible;
}

.config .left-images .stacked-image-container {
    width: 100%;
    height: 100%;
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-sizing: border-box;
}

.config .left-images .stacked-image-container img {
    display: block;
    width: 100%;
    height: calc((100% - 1vh) / 2);
    object-fit: cover;
    border-radius: 0;
}

.config .left-images .stacked-image-container img:first-child {
    margin-bottom: 1vh;
}


.config .right-content {
    width: 30vw;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 40px 2vw 0 2vw;
    box-sizing: border-box;
    position: relative;
    height: 100vh;
    overflow-y: scroll;
}

.form-tab {
    display: block !important;
    width: 100%;
    margin-bottom: 0;
    min-height: 250px;
    padding-top: 40px;
    padding-bottom: 30px;
    border-top: 1px solid #eee;
}
.form-tab:first-child {
    border-top: none;
    padding-top: 0;
}
#step-3.form-tab {
    min-height: 60px;
    padding-top: 20px;
    padding-bottom: 20px;
}
#step-3.form-tab .options-container {
    margin-bottom: 0;
    min-height: 0;
}
#step-3.form-tab h2 {
    margin-bottom: 0;
}

.form-tab h2 {
    margin-bottom: 15px;
}
.parquet-section-wrapper h4 {
    font-size: 1.15rem;
    font-weight: 500;
    margin-bottom: 10px;
}


.form-tab:last-child {
    padding-bottom: 180px;
}
.config .right-content .top-section {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    flex-grow: 1;
}

.config .radio-group {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.8vh;
}
.config .radio-card {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: #fff;
    padding: 0.9rem;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s, box-shadow 0.2s, border-width 0.2s;
    gap: 10px;
    flex-wrap: wrap; 
}
.config .radio-card input[type="radio"],
.config .radio-card input[type="checkbox"] {
    display: none;
}
.config .radio-card:has(input[type="radio"]:checked),
.config .radio-card:has(input[type="checkbox"]:checked) {
    border-color: #000;
    background-color: #f0f0f0;
    border-width: 1.5px;
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.05);
}

.config .radio-card:hover {
    background-color: #f8f8f8;
}

.finish-option-description {
    font-weight: 300;
    color: #aaa; 
    margin-top: 10px;
    font-size: 0.9rem;
    line-height: 1.4;
    text-align: left;
    padding: 0 5px;
}


.config input[type="checkbox"]{
    visibility: hidden;
    position: absolute;
}
.notification{
    text-align: left;
    margin-top: 10px;
    margin-bottom:10px;
    padding: 5px 0;
    color: #cc4b37;
    font-size: 0.9rem;
    font-weight: 300;
    width: 100%;
    box-sizing: border-box;
}
.custom-checkbox {
    display: none;
}
:root{
    --img-width: 70px;
    --bg-with: 80px;
}
.checkbox-label {
    display: inline-block;
    width: var(--img-width);
    height: var(--img-width);
    background-color: transparent;
    cursor: pointer;
    position: relative;
    border-radius: 100%;
    padding: 2px;
    box-sizing: border-box;
    transition: transform 0.2s ease-out;
}
.checkbox-image {
    width: 100%;
    height: 100%;
    transition: all 0.3s ease;
    border-radius: 100%;
    object-fit: cover;
    position: relative;
    z-index: 1;
}

.custom-checkbox:checked + .checkbox-label:after{
    width: var(--bg-with);
    height: var(--bg-with);
    background-color: #E0E0E0;
    border-radius: 50%;
    border: 1.5px solid #333333;
    box-shadow: 0 0 6px rgba(0,0,0,0.075);
    position: absolute;
    content: "";
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
}

.config .parquet-checkboxes {
    display: flex !important;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap:20px;
    width: 100%;
    margin-top: 0;
    padding: 5px 0;
}
.config .parquet-section-wrapper {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    box-sizing: border-box;
    margin-bottom: 15px;
}
.parquet-section-wrapper .p-wrapper {
    text-align: left;
    margin-top: 10px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
.parquet-section-wrapper .p-wrapper p {
    margin: 2px 0;
    font-size: 0.9rem;
}
.parquet-section-wrapper .p-wrapper p.option-price {
    font-weight: 500;
}


.radio-group:not(.persist-group):not(:first-child):not(:has(.radio-card)){display: none}

.config .radio-card:hover {
    background-color: #f8f8f8;
}

.config .option-name {
    font-size: 0.9rem;
    font-weight: 300;
    color: #14171c; /* UPDATED COLOR */
}
.config .option-price {
    font-size: 0.9rem;
    font-weight: 500;
    margin-left: auto;
    color: #14171c; /* UPDATED COLOR */
}

.feature-details-link{
    display:inline-block !important;
    margin-top:1rem;
    margin-bottom: 1rem;
    background:none;
    border:none;
    box-shadow:none;
    color:#000;
    text-decoration:underline;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 300;
    width: auto;
    text-align: left;
}
.feature-details-link:hover {
    color: #444;
}

.config .bottom-section{
    position:sticky;
    bottom:0;
    box-shadow:none !important;
    transform:none !important;
    transition:none !important;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 15px 0px;
    z-index: 50;
    border-top: none;
}

.config .price-box {
    width: 100%;
    background: #fff;
    border: none;
    border-radius: 6px;
    padding: 1rem 1.5rem;
    box-sizing: border-box;
    margin: 0 0 0.5rem 0;
    box-shadow: 0 2px 8px rgba(0,0,0,.1);
    transition: transform .4s cubic-bezier(.4,0,.2,1);
}
.config .price-box.raise{
    transform:translateY(-8px);
}


.config .price-box h4 {
    margin: 0 0 0.5rem 0;
    font-size: 1.15rem;
    font-weight: 500;
    color: #14171c; /* UPDATED COLOR */
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
}
.tva-label,
.config .price-box .p2 {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.3;
}
.tva-label {
    margin-left: 0.5ch;
}

.config .button-row {
    width: 100%;
    height: auto;
    position: relative;
    background-color: #f0f0f0;
    border-radius: 5px;
    overflow: hidden;
    margin-top: 5px;
}

#scroll-progress-bar-bottom {
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 100%;
    background-color: #333;
    border-radius: 5px;
    transition: width 0.1s ease-out, opacity 0.4s;
    opacity: 1;
}

.config .continue-button {
    position: relative;
    z-index: 2;
    width: 100%;
    background-color: transparent;
    color: transparent;
    border: none;
    border-radius: 5px;
    font-size: 1.15rem;
    font-weight: 500;
    padding: 0.75rem;
    line-height: 1.25;
    text-align: center;
    cursor: not-allowed;
    transition: background-color .4s, color .4s;
}

.config .continue-button.active {
    background-color: #333;
    color: #fff;
    cursor: pointer;
}

.config .continue-button.active + #scroll-progress-bar-bottom {
    opacity: 0;
}

.config .continue-button.active:hover {
    background-color: #444;
    color: #fff;
}
.modal-overlay {
position: fixed;
top: 0;
left: 0;
width: 100vw;
height: 100vh;
background-color: rgba(0,0,0,0.5);
display: none;
align-items: center;
justify-content: center;
z-index: 9999;

/* Background blur for all browsers */
backdrop-filter: blur(8px);
-webkit-backdrop-filter: blur(8px);
}


.modal-content {
    background: #fff;
    padding: 3rem 4rem;
    border-radius: 5px;
    max-width: 960px;
    width: 100vw;
    position: relative;
}

.modal-content h3 {
    margin-top: 0;
    margin-bottom: 15px;
}

.modal-content .modal-section-title {
    text-transform: uppercase;
    font-size: 1.15rem;
    font-weight: 500;
    color: #14171c; /* UPDATED COLOR */
    margin-top:3rem;
    margin-bottom:1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #e0e0e0;
}
.modal-content .modal-section-title:first-of-type {
    margin-top: 15px;
}
.modal-content .modal-material-item {
    display: grid;
    grid-template-columns: 35% auto;
    gap: 10px 15px;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid #f2f2f2;
}
.modal-content .modal-material-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.modal-content .material-name p,
.modal-content .material-chars p {
    margin:0;
    font-size: 0.9rem;
    line-height: 1.5;
    color: #737579; /* UPDATED COLOR */
}

.close-button {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background-color: transparent;
    border: none;
    font-family: Arial, sans-serif;
    font-size: 2rem;
    font-weight: 300;
    color: #777;
    cursor: pointer;
    padding: 0.1rem 0.5rem;
    line-height: 1;
    transition: color 0.2s ease;
    z-index: 10;
}
.close-button:hover {
    color: #000;
    background-color: transparent;
}
.modal-inner{
    overflow-y: auto;
    max-height: calc(85vh - 4rem);
}
.multistep-form{width: 100%;}
.options-container{
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: stretch;
    margin-top: 15px;
    margin-bottom: 15px;
}

.custom-text-input {
    width: 100%;
    padding: 0.9rem 0.9rem;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: #fff;
    font-size: 0.9rem;
    font-weight: 300;
    color: #333;
    box-sizing: border-box;
}
.custom-text-input:focus {
    border-color: #000;
    outline: none;
    box-shadow: 0 0 0 1px #000;
}
.custom-text-input {
    line-height: normal;
}

.price-box .old-price {
    font-size: 0.8em;
    color: #888;
    text-decoration: line-through;
    margin-right: 8px;
    line-height: 1;
    font-weight: 300;
}
.price-box .new-price {
    line-height: 1;
    font-weight: 500;
}
#discount-message {
    margin-top: 5px;
    color: #28a745;
    font-size: 0.9rem;
    font-weight: 500;
}


.config .radio-card.disabled-option {
    background-color: #e9ecef;
    cursor: not-allowed;
    opacity: 0.7;
}
.config .radio-card.disabled-option:has(input[type="radio"]:checked),
.config .radio-card.disabled-option:has(input[type="checkbox"]:checked) {
    border-color: #adb5bd;
    background-color: #f0f0f0;
}
.config .radio-card input[type="radio"]:disabled + .option-name,
.config .radio-card input[type="radio"]:disabled ~ .option-price,
.config .radio-card input[type="checkbox"]:disabled + .option-name,
.config .radio-card input[type="checkbox"]:disabled ~ .option-price {
    color: #6c757d;
}

@media (max-width: 768px) {
    html {
        height: 100%;
    }

    body {
        height: auto;
        min-height: 100%;
        overflow-y: auto;
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
    }

    /* === SITE STYLES MOBILE === */
    h1 {
        font-size: 3.2rem;
        line-height: 1.2em;
    }
    h2 {
        font-size: 1.7rem;
        line-height: 1.25em;
    }
    h3 {
        font-size: 1.4rem;
        line-height: 1.3em;
    }
    p {
        font-size: 0.9rem;
        line-height: 1.6em;
    }
    /* Some paragraphs need specific styles to override the general rule */
    .parquet-section-wrapper .p-wrapper p,
    .modal-content .material-name p,
    .modal-content .material-chars p {
         font-size: 0.9rem;
         line-height: 1.5;
    }
    .config .right-content .p2 {
        font-size: 0.9rem;
        line-height: 1.3;
    }


    .config {
        display: flex;
        flex-direction: column;
        overflow: visible !important;
        transform: none !important;
        position: relative;
    }

    .config .left-images {
        width: 100% !important;
        height: 56vw;
        position: fixed !important;
        top: 0;
        left: 0;
        z-index: 999;
        background-color: #ffffff;
        pointer-events: none;
    }

    .config .left-images .stacked-image-container {
        padding: 0;
        height: 100%;
    }
    .config .left-images .stacked-image-container img {
         height: calc((100% - 1vh) / 2);
    }


    .config .right-content {
        width: 100% !important;
        height: auto;
        overflow: visible;
        padding: 20px 5vw 180px 5vw;
        z-index: 1;
        background-color: #fff;
        margin-top: 56vw;
    }

    .form-tab {
        margin-bottom: 40px;
        min-height: 150px;
        padding-bottom: 20px;
    }
         #step-3.form-tab {
        min-height: 50px;
        padding-bottom: 10px;
    }
    .options-container {
        flex-direction: column;
        margin-bottom: 20px;
    }

    .config .bottom-section {
        position:fixed;
        left:0; bottom:0; width:100vw;
        padding: 15px 5vw;
        z-index: 1000;
        display: flex;
        flex-direction: column;
        align-items: stretch;
    }
    
    .config .price-box {
        margin-bottom: 0.75rem;
    }

    .config .continue-button {
        width: 100%;
        padding: 0.9rem;
        margin-top: 0;
        font-size: 1.15rem;
    }

    .parquet-section-wrapper .p-wrapper {
        align-items: flex-start;
    }

    .config .parquet-checkboxes {
        flex-wrap: wrap;
        gap: 15px;
        justify-content: flex-start;
    }
    .checkbox-label {
        width: 50px;
        height: 50px;
    }
    .custom-checkbox:checked + .checkbox-label:after{
        width: 60px;
        height: 60px;
    }
    .config .radio-card {
        padding: 0.9rem;
    }
    .modal-content {
        width: 90vw;
        padding: 2rem 2rem;
    }
    .modal-inner {
        max-height: calc(85vh - 3rem);
    }
    .modal-content .modal-material-item {
        grid-template-columns: 1fr;
        gap: 5px;
    }
    .modal-content .material-chars p {
        font-size: 0.9rem;
    }
    .close-button {
        top: 0.5rem;
        right: 0.5rem;
        font-size: 1.5rem;
    }
}