*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    font-family: 'Inter', sans-serif;
    -webkit-text-size-adjust: 100%;
}

body {
    background-color: #f9fafc;
    color: #555;
    overflow-x: hidden;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

.is_container {
    max-width: 1390px;
    margin: 0 auto;
    width: 100%;
}

.is_row {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: center;
}

.is_header {
    background-color: #fff;
}

.is_header .is_row {
    justify-content: space-between;
}

/* ==========================================================================
   Header Styles
   ========================================================================== */

.is_header {
    background-color: #fff;
    padding: 13px 0;
    width: 100%;
    border-bottom: 1px solid #E7E5E4;
}

.is_logo img {
    max-height: 40px;
    width: auto;
}

.is_inline_menu ul {
    display: flex;
    align-items: center;
    gap: 50px;
}

.is_inline_menu ul li a {
    font-size: 14px;
    font-weight: 500;
    color: #555555;
    text-transform: uppercase;
    transition: all .3s ease-in-out;
}

.is_inline_menu ul li a:hover,
.is_inline_menu ul li a.active {
    color: #222222;
}

.is_banner {
    padding-block: 130px;
    text-align: center;
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.is_banner h1 {
    font-size: 50px;
    font-weight: 700;
    color: #222222;
}

/* ==========================================================================
   Product Details Section
   ========================================================================== */
.is_shadow_block {
    box-shadow: 0 0 44px rgba(0, 0, 0, 0.05);
    padding: 50px;
}

.is_product_details_grid {
    display: grid;
    gap: 50px;
    grid-template-columns: 1fr 1fr;
}

/* ==========================================================================
   Image Gallery – Pure CSS Radio Slider
   ========================================================================== */

/* Hide radio buttons */
.is_image_box input[type="radio"] {
    display: none;
}

/* Main image containers – all hidden by default */
.is_main_image {
    display: none;
    width: 100%;
    aspect-ratio: 630 / 506;
    overflow: hidden;
    background-color: #F6F6F6;
}

.is_main_image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Show the image whose radio is checked */
#gall1:checked~#contentimg1,
#gall2:checked~#contentimg2,
#gall3:checked~#contentimg3,
#gall4:checked~#contentimg4,
#gall5:checked~#contentimg5 {
    display: block;
    animation: fadeIn 0.35s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Thumbnail strip */
.is_thumb_images {
    margin-top: 15px;
}

.is_thumb_images ul {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 15px;
}

.is_thumb_images ul li label {
    display: block;
    aspect-ratio: 146 / 130;
    overflow: hidden;
    border: 1px solid transparent;
    cursor: pointer;
    transition: border-color 0.25s ease;
}

.is_thumb_images ul li label:hover {
    border-color: #E7E5E4;
    background-color: #F6F6F6;
}

.is_thumb_images ul li label img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Active thumbnail border */
#gall1:checked~.is_thumb_images ul li:nth-child(1) label,
#gall2:checked~.is_thumb_images ul li:nth-child(2) label,
#gall3:checked~.is_thumb_images ul li:nth-child(3) label,
#gall4:checked~.is_thumb_images ul li:nth-child(4) label,
#gall5:checked~.is_thumb_images ul li:nth-child(5) label {
    border-color: #E7E5E4;
    background-color: #F6F6F6;
}

/* ==========================================================================
   Product Info Box
   ========================================================================== */

.is_product_info_box {
    display: flex;
    flex-direction: column;
}

.is_product_title {
    font-size: 26px;
    font-weight: 600;
    color: #222;
}

.is_product_price {
    font-size: 24px;
    font-weight: 700;
    color: #DA5813;
}

/* Meta Tags */
.is_product_meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.is_meta_tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    color: #DA5813;
    background-color: #FBEEE7;
    padding: 4px 12px;
    border-radius: 35px;
}

/* Description */
.is_product_description {
    margin-top: 25px;
    font-size: 16px;
    color: #555;
}

.is_btn {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    padding: 10px 24px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.25s ease;
}

.is_btn_primary {
    background-color: #DA5813;
    color: #fff;
}

.is_btn_primary:hover {
    background-color: rgb(167, 47, 11);
}

/* Payments */
.is_payments {
    display: flex;
    align-items: center;
    gap: 10px;
}

.is_payments_label {
    font-size: 16px;
    font-weight: 600;
    color: #222;
    white-space: nowrap;
}

.is_payment_icons {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

/* Feature Cards */
.is_feature_cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.is_feature_card {
    text-align: center;
    padding: 20px 12px;
    background: #F6F6F6;
}

.is_feature_icon {
    margin-bottom: 12px;

}

.is_feature_icon img {
    margin: 0 auto;
}

.is_feature_card h4 {
    font-size: 16px;
    font-weight: 600;
    color: #222;
    margin-bottom: 6px;
}

.is_feature_card p {
    font-size: 14px;
    color: #555;
    font-weight: 400;
    line-height: 20px;
}

.is_divider {
    border: none;
    border-top: 1px solid #E4E4E4;
    margin: 50px 0;
}

.is_product_details_grid .is_divider {
    margin: 25px 0;
}

/* ==========================================================================
   Notes Sections (What You Should Know / Shipping / About)
   ========================================================================== */

.is_notes_title {
    font-size: 26px;
    font-weight: 600;
    color: #222;
    margin-bottom: 25px;
}

.is_notes_grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.is_notes_card {
    padding: 30px;
    background-color: #F6F6F6;
}

.is_notes_card_title {
    font-size: 20px;
    font-weight: 600;
    color: #DA5813;
    margin-bottom: 16px;
}

.is_notes_card p {
    font-size: 14px;
    line-height: 1.7;
    color: #555;
}

.is_notes_list {
    list-style: disc;
    padding-left: 18px;
}

.is_notes_list li {
    font-size: 14px;
    line-height: 1.8;
    color: #555;
}

.is_notes_card_full {
    width: 100%;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.is_footer {
    border-top: 1px solid #E4E4E4;
    background-color: #f9fafc;
}

.is_footer_nav ul {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
}

.is_footer_nav {
    padding-block: 60px;
    border-bottom: 1px solid #E4E4E4;
}

.is_footer_nav ul li a {
    font-size: 14px;
    font-weight: 400;
    color: #555;
    transition: color 0.25s ease;
}

.is_footer_nav ul li a:hover {
    color: #222;
}

.is_footer_bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-block: 25px;
}

.is_footer_copy {
    font-size: 13px;
    color: #999999;
}

.is_footer_payments img {
    height: 26px;
    width: auto;
}
.x-hide {
    display: none !important;
}

/* ==========================================================================
   Responsive – Tablet (≤ 1024px)
   ========================================================================== */

@media (max-width: 1024px) {

    .is_container {
        padding: 0 20px;
    }

    .is_inline_menu ul {
        gap: 25px;
    }

    .is_banner {
        padding-block: 80px;
    }

    .is_banner h1 {
        font-size: 36px;
    }

    .is_shadow_block {
        padding: 30px;
    }

    .is_product_details_grid {
        gap: 30px;
    }

    .is_feature_cards {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .is_notes_grid {
        gap: 20px;
    }

    .is_footer_nav ul {
        gap: 25px;
    }
}

/* ==========================================================================
   Responsive – Mobile Landscape / Small Tablet (≤ 768px)
   ========================================================================== */

@media (max-width: 768px) {

    .is_container {
        padding: 0 15px;
    }

    /* Header – stack logo & nav */
    .is_header .is_row {
        flex-direction: column;
        gap: 10px;
    }

    .is_inline_menu ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px 20px;
    }

    .is_inline_menu ul li a {
        font-size: 13px;
    }

    /* Banner */
    .is_banner {
        padding-block: 60px;
    }

    .is_banner h1 {
        font-size: 28px;
    }

    /* Product grid – single column */
    .is_product_details_grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .is_shadow_block {
        padding: 20px;
    }

    .is_product_title {
        font-size: 22px;
    }

    .is_product_price {
        font-size: 20px;
    }

    /* Thumbnails */
    .is_thumb_images ul {
        gap: 8px;
    }

    /* Payments */
    .is_payments {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    /* Feature cards – single column */
    .is_feature_cards {
        grid-template-columns: 1fr;
    }

    /* Notes – single column */
    .is_notes_grid {
        grid-template-columns: 1fr;
    }

    .is_notes_title {
        font-size: 22px;
    }

    .is_notes_card {
        padding: 20px;
    }

    .is_divider {
        margin: 30px 0;
    }

    /* Footer */
    .is_footer_nav {
        padding-block: 30px;
    }

    .is_footer_nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px 24px;
    }

    .is_footer_bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

/* ==========================================================================
   Responsive – Mobile Portrait (≤ 480px)
   ========================================================================== */

@media (max-width: 480px) {

    .is_banner {
        padding-block: 40px;
    }

    .is_banner h1 {
        font-size: 22px;
    }

    .is_shadow_block {
        padding: 15px;
    }

    .is_product_title {
        font-size: 18px;
    }

    .is_product_price {
        font-size: 18px;
    }

    .is_meta_tag {
        font-size: 11px;
        padding: 3px 10px;
    }

    .is_product_description {
        font-size: 14px;
    }

    .is_thumb_images ul {
        grid-template-columns: repeat(5, 1fr);
        gap: 5px;
    }

    .is_notes_title {
        font-size: 18px;
        margin-bottom: 15px;
    }

    .is_notes_card_title {
        font-size: 16px;
    }
}