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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #ffffff;
    color: #212121;
    line-height: 1.6;
}

header {
    padding: 15px 20px;
    border-bottom: 1px solid #e0e0e0;
    background-color: #ffffff;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 20px;
    font-weight: bold;
    color: #1a73e8;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.breadcrumb {
    font-size: 12px;
    color: #5f6368;
    margin-bottom: 20px;
    overflow-x: auto;
}

.breadcrumb a {
    color: #1a73e8;
    text-decoration: none;
}

.product-page {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 40px;
}

/* IMAGE SLIDER STYLES */
.image-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.slider-wrapper {
    position: relative;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    background-color: #f5f5f5;
    padding: 10px;
    overflow: hidden;
    width: 98%;
}

.main-image-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    background-color: #fafafa;
    aspect-ratio: 1 / 1;
}

.images-track {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.image-item {
    min-width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
}

.main-image {
    width: 80%;
    height: 80%;
    object-fit: contain;
    display: block;
}

/* SLIDER CONTROLS */
.slider-controls {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 10px;
    pointer-events: none;
    z-index: 10;
}

.slider-btn {
    pointer-events: all;
    background-color: rgba(255, 255, 255, 0.9);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #212121;
    transition: all 0.3s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    flex-shrink: 0;
}

.slider-btn:hover {
    background-color: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
    transform: scale(1.1);
}

.slider-btn:active {
    transform: scale(0.95);
}

/* THUMBNAILS SLIDER */
.thumbnails-wrapper {
    position: relative;
    width: 100%;
}

.thumbnails-container {
    display: flex;
    gap: 7px;
    overflow-x: auto;
    overflow-y: hidden;
    padding-bottom: 8px;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    -webkit-overflow-scrolling: touch;
}

.thumbnails-container::-webkit-scrollbar {
    height: 50px;
}

.thumbnails-container::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

.thumbnails-container::-webkit-scrollbar-thumb {
    background: #d0d0d0;
    border-radius: 10px;
}

.thumbnails-container::-webkit-scrollbar-thumb:hover {
    background: #a0a0a0;
}

.thumbnail {
    width: 60px;
    height: 60px;
    min-width: 60px;
    border: 2px solid #e0e0e0;
    border-radius: 4px;
    cursor: pointer;
    background-color: #f5f5f5;
    object-fit: cover;
    transition: all 0.3s;
    flex-shrink: 0;
    -webkit-user-select: none;
    user-select: none;
}

.thumbnail:hover {
    border-color: #1a73e8;
    box-shadow: 0 2px 6px rgba(26, 115, 232, 0.2);
}

.thumbnail.active {
    border: 2px solid #1a73e8;
    box-shadow: 0 0 8px rgba(26, 115, 232, 0.3);
}

/* IMAGE COUNTER */
.image-counter {
    position: absolute;
    top: 12px;
    right: 12px;
    background-color: rgba(0, 0, 0, 0.6);
    color: white;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    z-index: 5;
}

/* DETAILS SECTION */
.details-section {
    padding: 0;
}

.product-name {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #212121;
    line-height: 1.4;
}

.rating-section {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.stars {
    color: #ffc107;
    font-size: 14px;
}

.reviews {
    font-size: 12px;
    color: #5f6368;
}

.highlights {
    background-color: #f9f9f9;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 12px;
    margin-bottom: 18px;
    font-size: 13px;
}

.highlights li {
    list-style: none;
    padding: 6px 0;
    border-bottom: 1px solid #efefef;
}

.highlights li:last-child {
    border-bottom: none;
}

.price-box {
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 15px;
    margin-bottom: 18px;
    background-color: #fafafa;
}

.price-section {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.current-price {
    font-size: 26px;
    font-weight: 700;
    color: #212121;
}

.original-price {
    font-size: 16px;
    color: #9aa0a6;
    text-decoration: line-through;
}

.discount-badge {
    background-color: #ff6b6b;
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

.offers-text {
    font-size: 12px;
    color: #1a73e8;
    margin-bottom: 8px;
}

.emi-section {
    font-size: 12px;
    color: #5f6368;
    padding-top: 10px;
    border-top: 1px solid #e0e0e0;
}

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

.stock-status {
    color: #137333;
    font-weight: 500;
}

.delivery-info {
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 12px;
    font-size: 13px;
    margin-bottom: 15px;
    background-color: #f9f9f9;
}

.sidebar {
    padding: 15px;
    background-color: #fafafa;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    position: sticky;
    top: 80px;
    height: fit-content;
}

.quantity-selector {
    margin-bottom: 12px;
}

.quantity-selector label {
    display: block;
    font-size: 12px;
    margin-bottom: 6px;
    font-weight: 500;
}

.quantity-selector select {
    width: 100%;
    padding: 10px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    font-size: 14px;
}

.button-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 15px;
}

.btn {
    padding: 12px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    transition: 0.2s;
    width: 100%;
    -webkit-user-select: none;
    user-select: none;
}

.btn-cart {
    background-color: #ffd166;
    color: #212121;
}

.btn-cart:hover {
    background-color: #ffc844;
}

.btn-buy {
    background-color: #ff8c42;
    color: white;
}

.btn-buy:hover {
    background-color: #ff7c32;
}

.payment-icons {
    border-top: 1px solid #e0e0e0;
    padding-top: 12px;
    margin-bottom: 12px;
    font-size: 11px;
    color: #5f6368;
}

.warranty-info {
    font-size: 11px;
    color: #5f6368;
    line-height: 1.6;
}

.warranty-info strong {
    color: #212121;
}

.about-section {
    border-top: 1px solid #e0e0e0;
    padding-top: 30px;
    margin-top: 30px;
}

.section-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #212121;
}

.description-text {
    font-size: 13px;
    line-height: 1.8;
    color: #545454;
    margin-bottom: 20px;
}

.capabilities {
    margin-bottom: 25px;
}

.capabilities h3 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #212121;
}

.capabilities ul {
    list-style: none;
    padding-left: 20px;
}

.capabilities li {
    font-size: 13px;
    color: #545454;
    padding: 6px 0;
    border-bottom: 1px solid #f0f0f0;
}

.capabilities li:before {
    content: "✓ ";
    color: #1a73e8;
    font-weight: 600;
    margin-right: 8px;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 12px;
}

.specs-table tr {
    border-bottom: 1px solid #e0e0e0;
}

.specs-table td {
    padding: 12px;
    font-size: 13px;
}

.specs-table td:first-child {
    font-weight: 600;
    color: #212121;
    width: 35%;
    background-color: #f9f9f9;
}

.specs-table tr:hover td:first-child {
    background-color: #f0f0f0;
}

footer {
    border-top: 1px solid #e0e0e0;
    padding: 20px;
    color: #5f6368;
    font-size: 12px;
    margin-top: 30px;
    text-align: center;
}

.coupon-section {
    margin-bottom: 15px;
    padding: 12px;
    background-color: #f0f0f0;
    border-radius: 4px;
}

.coupon-input {
    width: 100%;
    padding: 10px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    margin-bottom: 8px;
    font-size: 14px;
}

.btn-coupon {
    background-color: #34a853;
}

.btn-coupon:hover {
    background-color: #2d8659;
}

.coupon-message {
    font-size: 12px;
    margin-top: 8px;
    color: #34a853;
}

/* RESPONSIVE DESIGN */

/* Mobile (480px और उससे कम) */
@media (max-width: 480px) {
    .container {
        padding: 10px;
    }

    header {
        padding: 8px 10px;
    }

    .logo {
        font-size: 14px;
    }

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

    .product-name {
        font-size: 15px;
        margin-bottom: 10px;
    }

    .current-price {
        font-size: 18px;
    }

    .original-price {
        font-size: 13px;
    }

    .price-section {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .slider-wrapper {
        width: 100%;
        padding: 6px;
    }

    .slider-btn {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }

    .thumbnail {
        width: 50px;
        height: 50px;
        min-width: 50px;
    }

    .thumbnails-container {
        gap: 5px;
    }

    .image-counter {
        font-size: 10px;
        padding: 4px 8px;
        top: 8px;
        right: 8px;
    }

    .sidebar {
        padding: 12px;
        position: static;
        top: auto;
    }

    footer {
        font-size: 10px;
        padding: 12px;
    }

    .section-title {
        font-size: 15px;
    }

    .description-text {
        font-size: 12px;
    }

    .specs-table td {
        padding: 10px;
        font-size: 12px;
    }

    .rating-section {
        font-size: 12px;
    }
}

/* Tablet (481px - 768px) */
@media (min-width: 481px) and (max-width: 768px) {
    .container {
        padding: 15px;
    }

    header {
        padding: 12px 15px;
    }

    .logo {
        font-size: 17px;
    }

    .product-page {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .product-name {
        font-size: 17px;
    }

    .current-price {
        font-size: 21px;
    }

    .original-price {
        font-size: 14px;
    }

    .slider-wrapper {
        width: 100%;
        padding: 8px;
    }

    .slider-btn {
        width: 36px;
        height: 36px;
        font-size: 18px;
    }

    .thumbnail {
        width: 55px;
        height: 55px;
        min-width: 55px;
    }

    .thumbnails-container {
        gap: 6px;
    }

    .image-counter {
        font-size: 11px;
        padding: 5px 10px;
    }

    .sidebar {
        padding: 15px;
        position: static;
        top: auto;
    }

    footer {
        font-size: 11px;
        padding: 15px;
    }

    .section-title {
        font-size: 16px;
    }

    .specs-table td {
        padding: 11px;
        font-size: 12px;
    }
}

/* Laptop (769px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        padding: 18px;
        max-width: 95%;
    }

    .product-page {
        grid-template-columns: 1fr 1fr;
        gap: 25px;
    }

    .product-name {
        font-size: 18px;
    }

    .current-price {
        font-size: 24px;
    }

    .slider-wrapper {
        width: 98%;
        padding: 10px;
    }

    .slider-btn {
        width: 38px;
        height: 38px;
        font-size: 19px;
    }

    .thumbnail {
        width: 58px;
        height: 58px;
        min-width: 58px;
    }

    .image-counter {
        font-size: 12px;
        padding: 6px 12px;
    }

    .sidebar {
        padding: 15px;
        position: sticky;
        top: 80px;
        height: fit-content;
    }

    footer {
        font-size: 12px;
    }
}

/* Desktop (1025px+) */
@media (min-width: 1025px) {
    .container {
        max-width: 1200px;
        padding: 20px;
    }

    .product-page {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }

    .slider-wrapper {
        width: 98%;
    }

    .sidebar {
        position: sticky;
        top: 80px;
        height: fit-content;
    }
}

/* Landscape Mode */
@media (max-height: 600px) and (orientation: landscape) {
    .image-section {
        gap: 10px;
    }

    .slider-wrapper {
        max-height: 400px;
    }

    .sidebar {
        position: static;
        top: auto;
    }
}

/* Touch Device Optimization */
@media (hover: none) and (pointer: coarse) {
    .slider-btn,
    .thumbnail,
    .btn {
        min-height: 44px;
        min-width: 44px;
    }

    .slider-btn:active {
        transform: scale(0.95);
    }
}