/* ===== Ultra Modern Product Detail Page ===== */
:root {
    /* Enhanced Color Palette (OKLCH) */
    --light-bg: oklch(97% 0.01 85);        /* #f9f5f0 → Warm off-white */
    --dark-bg: oklch(15% 0.02 25);         /* #1e1a1c → Deep warm black */
    --bg-color: oklch(20% 0.03 25);         /* #2a2426 → Dark warm gray */
    --primary-color: oklch(100% 0 0);       /* #ffffff → Pure white */
    --text-color: oklch(94% 0 0);           /* #f0f0f0 → Bright white (text) */
    --text-light: oklch(80% 0 0);           /* #c0c0c0 → Light gray (secondary text) */
    --accent-color: oklch(70% 0.16 50);     /* #e07a2f → Vibrant orange */
    --accent-light: oklch(80% 0.14 55);     /* #f4a261 → Soft orange */
    --border-color: oklch(100% 0 0 / 15%);  /* rgba(255,255,255,0.15) → Transparent white */

    /* Gradients (unchanged structure, now using OKLCH colors) */
    --gradient-accent: linear-gradient(135deg, var(--accent-light) 0%, var(--accent-color) 100%);
    --gradient-dark: linear-gradient(135deg, var(--dark-bg) 0%, var(--bg-color) 100%);

    /* Enhanced Spacing */
    --space-xxs: 4px;
    --space-xs: 8px;
    --space-sm: 7px;
    --space-md: 10px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-xxl: 64px;
    
    /* Enhanced Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-pill: 999px;
    
    /* Enhanced Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.4);
    
    /* Enhanced Transitions */
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease-out;
    --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Glass Morphism Effects */
    --glass-bg: rgba(30, 26, 28, 0.85);
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --backdrop-blur: blur(12px);
}

.product-detail {
    padding: var(--space-xxl) 0;
    background: var(--gradient-dark);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.product-detail-container {
    background: var(--glass-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    backdrop-filter: var(--backdrop-blur);
    border: var(--glass-border);
    transition: var(--transition-slow);
    max-width: 1400px;
    margin: 0 auto;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.product-detail-container:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-5px);
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr;
}

/* Enhanced Product Gallery */
.product-gallery {
    padding: var(--space-xl);
    background: rgba(42, 36, 38, 0.8);
    display: flex;
    flex-direction: column;
    position: relative;
}

.main-image-container {
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    background: var(--bg-color);
    box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.4);
    transition: var(--transition);
}

.main-image-container:hover {
    box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.6);
}

.main-image {
    max-height: 100%;
    max-width: 100%;
    object-fit: contain;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    transform-origin: center center;
    cursor: zoom-in;
    transform-style: preserve-3d;
}

.main-image-container:hover .main-image {
    transform: scale(1.05) rotateY(2deg) rotateX(1deg);
}

/* Enhanced Zoom Overlay */
.zoom-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.97);
    z-index: 2000;
    cursor: zoom-out;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-slow);
    backdrop-filter: var(--backdrop-blur);
}

.zoom-overlay.active {
    opacity: 1;
    visibility: visible;
}

.zoomed-container {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: scale(0.95);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.zoom-overlay.active .zoomed-container {
    transform: scale(1);
}

.zoomed-image {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.95);
    border-radius: var(--radius-md);
    cursor: grab;
    user-select: none;
    transform-style: preserve-3d;
}

.zoomed-image:active {
    cursor: grabbing;
}

.zoom-btn {
    position: absolute;
    bottom: var(--space-md);
    right: var(--space-md);
    width: 48px;
    height: 48px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    z-index: 2;
    box-shadow: var(--shadow-sm);
}

.zoom-btn:hover {
    background: var(--gradient-accent);
    transform: scale(1.1) translateY(-3px);
    box-shadow: var(--shadow-md);
}

.zoom-btn i {
    font-size: 1.4rem;
}

/* Enhanced Thumbnails */
.thumbnails {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
}

.thumbnail {
    height: 100px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    overflow: hidden;
    position: relative;
    transform-style: preserve-3d;
}

.thumbnail::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(224, 122, 47, 0);
    transition: var(--transition);
}

.thumbnail:hover, 
.thumbnail.active {
    border-color: var(--accent-color);
    transform: translateY(-5px) rotateY(5deg);
    box-shadow: var(--shadow-md);
}

.thumbnail.active::after,
.thumbnail:hover::after {
    background: rgba(224, 122, 47, 0.15);
}

.thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.thumbnail:hover img {
    transform: scale(1.1);
}

/* Enhanced Product Info */
.product-info {
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    background: rgba(42, 36, 38, 0.7);
}

.product-title {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
    line-height: 1.1;
    color: var(--primary-color);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    font-weight: 800;
    background: linear-gradient(to right, var(--primary-color), var(--accent-light));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    padding: 10px 1px;
}

.product-subtitle {
    color: var(--text-light);
    margin-bottom: var(--space-lg);
    font-size: 1.2rem;
    opacity: 0.9;
    line-height: 1.6;
}

.product-price {
    font-size: 2.2rem;
    color: var(--accent-light);
    margin-bottom: var(--space-xl);
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.price-original {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: line-through;
    font-weight: 500;
}

.price-discount {
    font-size: 1.1rem;
    background: var(--gradient-accent);
    color: var(--dark-bg);
    padding: var(--space-xxs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-weight: 700;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.stars {
    color: #FFC107;
    font-size: 1.3rem;
    letter-spacing: 3px;
    display: flex;
    gap: var(--space-xxs);
}

.review-count {
    color: var(--text-light);
    font-size: 1rem;
    text-decoration: underline;
    cursor: pointer;
    transition: var(--transition);
}

.review-count:hover {
    color: var(--accent-light);
    text-decoration: none;
}

.product-description {
    margin-bottom: var(--space-xl);
    line-height: 1.8;
    color: var(--text-light);
    position: relative;
    font-size: 1.1rem;
}

.product-description::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 0;
    width: 80px;
    height: 3px;
    background: var(--gradient-accent);
    border-radius: var(--radius-pill);
}

/* Enhanced Product Options */
.product-options {
    margin-bottom: var(--space-xl);
}

.option-group {
    margin-bottom: var(--space-lg);
}

.option-title {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary-color);
}

/* Modern Size Selector */
.multi-size-selector {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.size-options {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.size-option {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    background: rgba(0, 0, 0, 0.3);
    min-width: 60px;
    backdrop-filter: blur(4px);
    transform-style: preserve-3d;
}

.size-option:hover {
    border-color: var(--accent-color);
    transform: translateY(-3px) rotateY(5deg);
    box-shadow: var(--shadow-sm);
}

.size-option.selected {
    border-color: var(--accent-color);
    background: rgba(224, 122, 47, 0.2);
    box-shadow: 0 0 0 3px rgba(224, 122, 47, 0.3);
    font-weight: 700;
    transform: translateY(-3px);
}

.size-name {
    font-size: 1rem;
    color: var(--text-light);
}

/* Modern Color Selector */
.multi-color-selector {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.pack-item-selector {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: rgba(0, 0, 0, 0.15);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    backdrop-filter: blur(4px);
}

.pack-item-selector:hover {
    background: rgba(224, 122, 47, 0.1);
    border-color: var(--accent-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
}

.item-number {
    font-weight: 700;
    min-width: 70px;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.color-options {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.color-option {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    background: rgba(0, 0, 0, 0.3);
    transform-style: preserve-3d;
}

.color-option:hover {
    border-color: var(--accent-color);
    transform: translateY(-3px) rotateY(5deg);
    box-shadow: var(--shadow-sm);
}

.color-option.selected {
    border-color: var(--accent-color);
    background: rgba(224, 122, 47, 0.2);
    box-shadow: 0 0 0 3px rgba(224, 122, 47, 0.3);
    font-weight: 700;
    transform: translateY(-3px);
}

.color-preview {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(0, 0, 0, 0.2);
    background-size: cover;
    background-position: center;
    transition: var(--transition);
}

.color-option:hover .color-preview {
    transform: scale(1.1);
}

.color-name {
    font-size: 1rem;
    color: var(--text-light);
}

/* Modern Quantity Selector */
.quantity-selector {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-xl);
    gap: var(--space-sm);
}

.quantity-label {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary-color);
}

.quantity-controls {
    display: flex;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(4px);
}

.quantity-btn {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(224, 122, 47, 0.1);
    border: none;
    cursor: pointer;
    font-size: 1.3rem;
    color: var(--text-color);
    transition: var(--transition);
}

.quantity-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.quantity-btn:hover:not(:disabled) {
    background: var(--gradient-accent);
    color: var(--dark-bg);
}

.quantity-input {
    width: 60px;
    height: 48px;
    text-align: center;
    border: none;
    border-left: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-color);
    background: transparent;
}

.quantity-input::-webkit-outer-spin-button,
.quantity-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Modern Buy Now Button */
.buy-now-form {
    margin-bottom: var(--space-lg);
}

.buy-now-btn {
    width: 100%;
    padding: var(--space-md);
    background: var(--gradient-accent);
    color: var(--dark-bg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.2rem;
    font-weight: 800;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
}

.buy-now-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: 0.6s;
}

.buy-now-btn:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.buy-now-btn:hover::before {
    left: 100%;
}

.buy-now-btn:active {
    transform: translateY(-2px);
}

.buy-now-btn i {
    font-size: 1.5rem;
}

/* Modern Add to Cart Button */
.add-to-cart-btn {
    width: 100%;
    padding: var(--space-md);
    background: transparent;
    color: var(--accent-light);
    border: 2px solid var(--accent-light);
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    letter-spacing: 0.5px;
    margin-bottom: var(--space-lg);
    position: relative;
    overflow: hidden;
}

.add-to-cart-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(224, 122, 47, 0.1), transparent);
    transition: 0.6s;
    z-index: -1;
}

.add-to-cart-btn:hover {
    background: rgba(224, 122, 47, 0.15);
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
}

.add-to-cart-btn:hover::before {
    left: 100%;
}

/* Modern Product Meta */
.product-meta {
    border-top: 1px solid var(--border-color);
    padding-top: var(--space-lg);
    margin-top: var(--space-lg);
}

.meta-title {
    font-size: 1.2rem;
    margin-bottom: var(--space-md);
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.meta-title i {
    color: var(--accent-color);
    font-size: 1.3rem;
}

.meta-item {
    display: flex;
    margin-bottom: var(--space-sm);
    font-size: 1rem;
    color: var(--text-light);
    line-height: 1.6;
}

.meta-label {
    min-width: 140px;
    font-weight: 600;
    color: var(--text-color);
}

.meta-value {
    flex: 1;
}

/* Modern Stock Indicator */
.stock-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
    font-size: 1rem;
    font-weight: 600;
}

.stock-indicator.in-stock {
    color: #4CAF50;
}

.stock-indicator.low-stock {
    color: #FFC107;
}

.stock-indicator.out-of-stock {
    color: #F44336;
}

.stock-indicator i {
    font-size: 1.2rem;
}

/* Responsive Enhancements */
@media (min-width: 1200px) {
    .product-detail-grid {
        grid-template-columns: 1.2fr 1fr;
    }
    
    .product-info {
        padding: var(--space-xl);
    }
    
    .main-image-container {
        height: 550px;
    }
}

@media (max-width: 992px) {
    .product-detail {
        padding: var(--space-xl) 0;
    }
    
    .main-image-container {
        height: 400px;
    }
    
    .product-info {
        padding: var(--space-lg);
    }
    
    .product-title {
        font-size: 2rem;
    }
    
    .product-price {
        font-size: 1.8rem;
    }
    
    .thumbnails {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .product-detail {
        padding: var(--space-lg) 0;
    }
    
    .product-gallery {
        padding: var(--space-md);
    }
    
    .main-image-container {
        height: 350px;
    }
    
    .product-info {
        padding: var(--space-md);
    }
    
    .product-title {
        font-size: 1.8rem;
    }
    
    .pack-item-selector {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .color-options {
        width: 100%;
    }
    
    .buy-now-btn {
        padding: var(--space-md);
        font-size: 1.1rem;
    }
    
    .add-to-cart-btn {
        padding: var(--space-sm);
        font-size: 1rem;
    }
}

@media (max-width: 576px) {
    .product-detail {
        padding: var(--space-md) 0;
    }
    
    .main-image-container {
        height: 300px;
    }
    
    .thumbnails {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-xs);
    }
    
    .thumbnail {
        height: 80px;
    }
    
    .product-title {
        font-size: 1.6rem;
    }
    
    .color-option {
        padding: var(--space-xxs);
    }
    
    .color-preview {
        width: 40px;
        height: 40px;
    }
    
    .quantity-controls {
        flex: 1;
    }
    
    .quantity-input {
        flex: 1;
    }
    
    .meta-item {
        flex-direction: column;
        gap: var(--space-xxs);
    }
    
    .meta-label {
        min-width: auto;
    }
}

/* Modern Loading Animation */
@keyframes shimmer {
    0% { background-position: -1000px 0 }
    100% { background-position: 1000px 0 }
}

.loading-placeholder {
    animation: shimmer 2s infinite linear;
    background: linear-gradient(to right, #2a2426 8%, #3a3436 18%, #2a2426 33%);
    background-size: 2000px 104px;
    position: relative;
    overflow: hidden;
}

.loading-placeholder::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    animation: shimmer-overlay 2.5s infinite;
}

@keyframes shimmer-overlay {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Modern Tooltip */
.tooltip {
    position: relative;
    display: inline-block;
    cursor: pointer;
}

.tooltip .tooltip-text {
    visibility: hidden;
    width: 220px;
    background: var(--glass-bg);
    color: var(--text-color);
    text-align: center;
    border-radius: var(--radius-sm);
    padding: var(--space-sm);
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    border: var(--glass-border);
    backdrop-filter: var(--backdrop-blur);
    font-size: 0.95rem;
    line-height: 1.5;
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
    transform: translateX(-50%) translateY(-5px);
}

/* Accessibility Improvements */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Modern Focus Styles */
button:focus, 
input:focus, 
select:focus, 
textarea:focus {
    outline: 2px solid var(--accent-light);
    outline-offset: 3px;
    box-shadow: 0 0 0 4px rgba(224, 122, 47, 0.3);
}

/* Modern Animation for Adding to Cart */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes fly {
    0% { transform: translateY(0) scale(1); opacity: 1; }
    100% { transform: translateY(-100px) scale(0.5); opacity: 0; }
}

.add-to-cart-animation {
    animation: pulse 0.5s ease;
}

.cart-fly-animation {
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    animation: fly 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* Modern Floating Labels */
.form-group {
    position: relative;
    margin-bottom: var(--space-md);
}

.form-input {
    width: 100%;
    padding: var(--space-sm);
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-color);
    font-size: 1rem;
    transition: var(--transition);
    backdrop-filter: blur(4px);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(224, 122, 47, 0.3);
}

.form-label {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
    color: var(--text-light);
    transition: var(--transition);
    pointer-events: none;
    background: rgba(42, 36, 38, 0.9);
    padding: 0 var(--space-xs);
    border-radius: var(--radius-xs);
}

.form-input:focus + .form-label,
.form-input:not(:placeholder-shown) + .form-label {
    top: -10px;
    left: var(--space-sm);
    font-size: 0.85rem;
    color: var(--accent-light);
    background: var(--bg-color);
    padding: 0 var(--space-xs);
}