/* Design System Tokens */
:root {
    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    
    /* Colors */
    --color-bg-page: #f8fafc;
    --color-bg-card: #ffffff;
    --color-text-primary: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #64748b;
    --color-primary: #4f46e5;
    --color-primary-hover: #4338ca;
    --color-primary-light: #e0e7ff;
    --color-secondary: #0f172a;
    --color-secondary-hover: #1e293b;
    --color-accent: #10b981;
    --color-discount: #ef4444;
    --color-rating: #f59e0b;
    --color-border-light: #e2e8f0;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.08);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.08);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Styling */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--color-bg-page);
    color: var(--color-text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

/* Page Wrapper */
.page-container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
}

/* Main Layout Card */
.product-container {
    display: grid;
    grid-template-columns: 1.1fr 1.2fr;
    gap: 40px;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: 24px;
    padding: 40px;
    box-shadow: var(--shadow-xl);
}

/* --- Left Column: Gallery --- */
.gallery-column {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.image-wrapper {
    position: relative;
    width: 100%;
    background-color: #f1f5f9;
    border: 1px solid var(--color-border-light);
    border-radius: 20px;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.image-wrapper:hover {
    box-shadow: var(--shadow-lg);
}

.product-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    mix-blend-mode: multiply;
    transition: transform var(--transition-normal);
}

.image-wrapper:hover .product-image {
    transform: scale(1.04);
}

/* Overlay Badge */
.badge-overlay {
    position: absolute;
    top: 16px;
    left: 16px;
    background: linear-gradient(135deg, var(--color-primary), #6366f1);
    color: #ffffff;
    font-weight: 700;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 6px 12px;
    border-radius: 20px;
    box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
}

/* Thumbnails */
.thumbnails-container {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.thumbnail-btn {
    width: 68px;
    height: 68px;
    padding: 6px;
    background-color: var(--color-bg-card);
    border: 2px solid var(--color-border-light);
    border-radius: 12px;
    cursor: pointer;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.thumbnail-btn:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.thumbnail-btn.active {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.thumbnail-btn img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    mix-blend-mode: multiply;
}

/* --- Right Column: Product Details --- */
.info-column {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.brand-wrapper {
    display: flex;
}

.brand-link {
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    transition: color var(--transition-fast);
}

.brand-link:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

.product-title {
    font-size: 24px;
    font-weight: 700;
    line-height: 1.35;
    color: var(--color-text-primary);
    letter-spacing: -0.3px;
}

/* Ratings & Popularity Row */
.ratings-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.stars-wrapper {
    display: flex;
    align-items: center;
    gap: 2px;
}

.star-icon {
    width: 18px;
    height: 18px;
}

.star-icon.filled {
    fill: var(--color-rating);
}

.rating-value {
    font-weight: 700;
    font-size: 14px;
    color: var(--color-text-primary);
    margin-left: 4px;
}

.reviews-count {
    color: var(--color-text-muted);
    font-size: 14px;
}

.divider-dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background-color: var(--color-text-muted);
    opacity: 0.4;
}

.sales-stats {
    background-color: #ecfdf5;
    color: #065f46;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
}

.section-divider {
    border: 0;
    border-top: 1px solid var(--color-border-light);
    margin: 4px 0;
}

/* Pricing Layout */
.price-container {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.price-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.discount-badge {
    color: var(--color-discount);
    background-color: #fef2f2;
    font-weight: 800;
    font-size: 22px;
    padding: 2px 8px;
    border-radius: 8px;
}

.current-price {
    font-size: 32px;
    font-weight: 800;
    color: var(--color-text-primary);
    letter-spacing: -0.5px;
}

.mrp-row {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.original-price {
    text-decoration: line-through;
    font-weight: 500;
}

.tax-info {
    font-size: 13px;
    color: var(--color-text-muted);
}

.emi-promo-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
    background-color: #f0fdf4;
    border: 1px solid #d1fae5;
    color: #065f46;
    padding: 10px 14px;
    border-radius: 12px;
    font-size: 13px;
    line-height: 1.4;
}

.promo-icon {
    width: 20px;
    height: 20px;
    color: var(--color-accent);
    flex-shrink: 0;
}

/* Purchase Actions Section */
.purchase-actions-section {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.qty-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.qty-label {
    font-weight: 600;
    font-size: 14px;
    color: var(--color-text-secondary);
}

.qty-control {
    display: flex;
    align-items: center;
    border: 1px solid var(--color-border-light);
    border-radius: 10px;
    background-color: var(--color-bg-page);
    overflow: hidden;
}

.qty-btn {
    width: 36px;
    height: 36px;
    border: 0;
    background: transparent;
    font-weight: 600;
    font-size: 16px;
    color: var(--color-text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
}

.qty-btn:hover {
    background-color: #cbd5e1;
}

.qty-control input {
    width: 38px;
    text-align: center;
    border: 0;
    background: transparent;
    font-weight: 700;
    font-size: 14px;
    color: var(--color-text-primary);
    outline: none;
}

/* Disable spinner arrows on input */
.qty-control input::-webkit-outer-spin-button,
.qty-control input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.cta-container {
    display: flex;
    gap: 12px;
    flex: 1;
    min-width: 240px;
}

.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 700;
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-normal);
    flex: 1;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), #6366f1);
    color: #ffffff;
    border: 0;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(79, 70, 229, 0.35);
}

.btn-primary:active {
    transform: translateY(1px);
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: #ffffff;
    border: 0;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
}

.btn-secondary:hover {
    background-color: var(--color-secondary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.25);
}

.btn-secondary:active {
    transform: translateY(1px);
}

.cart-icon {
    width: 18px;
    height: 18px;
}

/* --- Offers Section --- */
.offers-section {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.offers-header-row {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-primary);
}

.tag-icon {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

.offers-title {
    font-size: 16px;
    font-weight: 700;
}

.offers-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
}

.offer-card-item {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: 14px;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.offer-card-item:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.offer-badge {
    display: inline-block;
    align-self: flex-start;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: 700;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 3px 8px;
    border-radius: 6px;
}

.offer-desc {
    font-size: 12px;
    line-height: 1.4;
    color: var(--color-text-secondary);
    flex: 1;
}

.offer-link {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 12px;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.offer-link:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

/* --- Recommendations Section --- */
.recommendations-section {
    margin-top: 48px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    width: 100%;
}

.recommendations-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text-primary);
    border-left: 4px solid var(--color-primary);
    padding-left: 12px;
}

.recommendations-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.recommendation-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
}

.recommendation-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.recommendation-image-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    background-color: #f1f5f9;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow: hidden;
}

.recommendation-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    mix-blend-mode: multiply;
    transition: transform var(--transition-normal);
}

.recommendation-card:hover .recommendation-image {
    transform: scale(1.06);
}

.recommendation-discount {
    position: absolute;
    top: 12px;
    left: 12px;
    background-color: var(--color-discount);
    color: #ffffff;
    font-weight: 800;
    font-size: 10px;
    padding: 4px 8px;
    border-radius: 6px;
    box-shadow: 0 2px 6px rgba(239, 68, 68, 0.2);
}

.recommendation-info {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.recommendation-brand {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--color-text-muted);
    letter-spacing: 0.5px;
}

.recommendation-product-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 36px;
}

.recommendation-ratings {
    display: flex;
    align-items: center;
    gap: 6px;
}

.card-stars {
    display: flex;
    align-items: center;
    gap: 1px;
}

.card-stars .star-icon {
    width: 14px;
    height: 14px;
}

.recommendation-reviews {
    font-size: 12px;
    color: var(--color-text-muted);
}

.recommendation-price-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 2px;
}

.recommendation-price {
    font-size: 16px;
    font-weight: 800;
    color: var(--color-text-primary);
}

.recommendation-mrp {
    font-size: 12px;
    text-decoration: line-through;
    color: var(--color-text-muted);
}

.btn-view-product {
    margin-top: auto;
    border: 0;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    font-size: 12px;
    font-weight: 700;
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    width: 100%;
}

.recommendation-card:hover .btn-view-product {
    background-color: var(--color-primary);
    color: #ffffff;
}

/* --- Responsive Adjustments --- */
@media (max-width: 820px) {
    .product-container {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 24px;
    }
    
    .gallery-column {
        max-width: 480px;
        margin: 0 auto;
        width: 100%;
    }

    .recommendations-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 12px;
    }
    
    .product-container {
        padding: 16px;
        border-radius: 16px;
    }
    
    .product-title {
        font-size: 20px;
    }
    
    .current-price {
        font-size: 26px;
    }
    
    .cta-container {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }

    .recommendations-grid {
        grid-template-columns: 1fr;
    }
}