/* ===========================
   PRODUCT PAGE MODERN DESIGN
   Based on Catalog Pages Design System
   Ultra Modern Minimalist & Ergonomic
   =========================== */

/* =====================
   COLOR VARIABLES (inherited from catalog-pages.css)
   ===================== */

:root {
    /* Primary Colors - Deep Blues */
    --primary-900: #0a1628;
    --primary-800: #1a2f4f;
    --primary-700: #2d4a6f;
    --primary-600: #4a6fa5;
    --primary-500: #5b8dc7;
    
    /* Accent Colors */
    --accent-gradient: linear-gradient(135deg, #5e8dc3 0%, #79abe5 100%);
    --accent-light: rgba(94, 141, 195, 0.08);
    
    /* Neutral Colors */
    --neutral-50: #f8fafc;
    --neutral-100: #f1f5f9;
    --neutral-150: #e8ecf1;
    --neutral-200: #e2e8f0;
    --neutral-300: #cbd5e1;
    --neutral-500: #64748b;
    --neutral-600: #475569;
    --neutral-700: #334155;
    --neutral-800: #1e293b;
    
    /* Semantic Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    /* Typography Scale */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    
    /* Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    /* Spacing Scale */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
}

/* =====================
   ANIMATIONS
   ===================== */

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes swipeShake {
    0% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(6px);
    }
    100% {
        transform: translateX(0);
    }
}

/* =====================
   ENTRANCE ANIMATIONS
   ===================== */

.price-section,
.quantity-section,
.action-buttons,
.min-qty-info,
.description-content,
.characteristics-content,
.reviews-content,
.review-card,
.no-reviews-card,
.write-review-section {
    animation: fadeInScale 0.5s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.price-section {
    animation-delay: 0.05s;
}

.quantity-section {
    animation-delay: 0.1s;
}

.action-buttons {
    animation-delay: 0.15s;
}

.min-qty-info {
    animation-delay: 0.2s;
}

.review-card:nth-child(odd) {
    animation-delay: 0.05s;
}

.review-card:nth-child(even) {
    animation-delay: 0.12s;
}

@media (prefers-reduced-motion: reduce) {
    .price-section,
    .quantity-section,
    .action-buttons,
    .min-qty-info,
    .description-content,
    .characteristics-content,
    .reviews-content,
    .review-card,
    .no-reviews-card,
    .write-review-section {
        animation: none;
    }
}

/* =====================
   PAGE LAYOUT
   ===================== */

.product-page {
    background: #ffffff;
    min-height: calc(100vh - 200px);
    padding-bottom: var(--space-lg);
}

.product-page .container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* =====================
   BREADCRUMB
   ===================== */

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: var(--space-sm);
    margin-bottom: var(--space-sm);
    font-size: 0.8125rem;
    color: var(--neutral-600);
    flex-wrap: wrap;
    animation: fadeInDown 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 2px 0;
}

.breadcrumb a {
    color: var(--neutral-600);
    text-decoration: none;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 4px;
    padding: 2px 6px;
    font-weight: var(--font-medium);
    position: relative;
}

.breadcrumb a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 6px;
    right: 6px;
    height: 1px;
    background: var(--primary-600);
    transform: scaleX(0);
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.breadcrumb a:hover {
    color: var(--primary-700);
    background: rgba(94, 141, 195, 0.05);
}

.breadcrumb a:hover::before {
    transform: scaleX(1);
}

.breadcrumb a:active {
    transform: scale(0.96);
}

.breadcrumb i {
    font-size: 0.7rem;
    color: var(--neutral-400);
    transition: color 0.2s ease;
    margin: 0 2px;
}

.breadcrumb a:hover ~ i {
    color: var(--primary-600);
}

.breadcrumb > *:last-child {
    color: var(--neutral-800);
    font-weight: var(--font-semibold);
    pointer-events: none;
}

/* =====================
   PRODUCT CONTAINER
   ===================== */

.product-container {
    display: grid;
    grid-template-columns: 600px 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
    animation: fadeInScale 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.1s backwards;
}

/* =====================
   PRODUCT GALLERY
   ===================== */

.product-gallery {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    position: sticky;
    top: 100px;
    align-self: start;
    animation: slideInLeft 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.2s backwards;
}

.main-image-frame {
    position: relative;
    background: var(--neutral-50);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--neutral-200);
    width: 600px;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-image-frame:hover {
    border-color: var(--primary-500);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.main-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1), transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 1;
    will-change: opacity;
}

.main-image-frame:hover .main-image {
    transform: scale(1.05);
}

.main-image-frame.show-swipe-hint {
    animation: swipeShake 1.5s cubic-bezier(0.4, 0.0, 0.2, 1) 0.8s;
    animation-iteration-count: 2;
}

.zoom-button {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--neutral-200);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(8px);
    z-index: 10;
}

.zoom-button:hover {
    background: var(--primary-600);
    border-color: var(--primary-600);
    color: white;
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(74, 111, 165, 0.3);
}

.zoom-button i {
    font-size: var(--text-sm);
}

/* =====================
   IMAGE THUMBNAILS
   ===================== */

.image-thumbnails {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 80px));
    gap: 10px;
}

.thumbnail {
    aspect-ratio: 1;
    width: 80px;
    height: 80px;
    max-width: 80px;
    max-height: 80px;
    border-radius: 12px;
    border: 2px solid var(--neutral-200);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    object-fit: contain;
    background: var(--neutral-50);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.thumbnail::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(0, 0, 0, 0.02) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.thumbnail:hover {
    border-color: var(--primary-500);
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 20px rgba(74, 111, 165, 0.2);
}

.thumbnail:hover::before {
    opacity: 1;
}

.thumbnail.active {
    border-color: var(--primary-600);
    background: linear-gradient(135deg, var(--neutral-50) 0%, var(--accent-light) 100%);
    box-shadow: 0 4px 16px rgba(74, 111, 165, 0.25);
}

.thumbnail.active::after {
    content: '✓';
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    background: var(--primary-600);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: bold;
    box-shadow: 0 2px 8px rgba(74, 111, 165, 0.3);
}

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

/* =====================
   PRODUCT DETAILS
   ===================== */

.product-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    animation: slideInRight 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.3s backwards;
}

.product-header {
    padding-bottom: var(--space-lg);
    border-bottom: 2px solid var(--neutral-100);
}

.product-title {
    font-size: var(--text-3xl);
    font-weight: var(--font-semibold);
    color: var(--primary-800);
    margin: 0 0 var(--space-md) 0;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.product-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    border-radius: 20px;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    transition: all 0.2s ease;
}

.badge i {
    font-size: var(--text-xs);
}

.badge.in-stock {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.badge.low-stock {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #92400e;
    border: 1px solid #fbbf24;
}

.badge.out-of-stock {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    color: #991b1b;
    border: 1px solid #f87171;
}

.badge.sku {
    background: var(--neutral-100);
    color: var(--neutral-700);
    border: 1px solid var(--neutral-200);
}

/* =====================
   PRODUCT INFO
   ===================== */

.product-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.price-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    padding: var(--space-lg);
    background: linear-gradient(135deg, var(--neutral-50) 0%, var(--accent-light) 100%);
    border-radius: 12px;
    border: 1px solid var(--neutral-200);
}

.price-label {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--neutral-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.product-price {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    color: var(--primary-800);
    letter-spacing: -0.02em;
}

/* =====================
   QUANTITY SECTION
   ===================== */

.quantity-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: white;
    border-radius: 12px;
    border: 1px solid var(--neutral-200);
}

.quantity-label {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--neutral-700);
}

.quantity-label i {
    color: var(--primary-600);
}

.quantity-controls {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--neutral-50);
    padding: var(--space-xs);
    border-radius: 12px;
    border: 1px solid var(--neutral-200);
    width: fit-content;
}

.quantity-btn {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: none;
    background: white;
    color: var(--primary-700);
    font-size: var(--text-lg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.quantity-btn:hover {
    background: var(--primary-600);
    color: white;
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(74, 111, 165, 0.2);
}

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

.prod-quantity-input {
    width: 80px;
    height: 40px;
    text-align: center;
    border: none;
    background: white;
    border-radius: 10px;
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--primary-800);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    -moz-appearance: textfield;
}

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

.prod-quantity-input:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

/* =====================
   ACTION BUTTONS
   ===================== */

.action-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border-radius: 12px;
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border: none;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.5s, height 0.5s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn i,
.btn span {
    position: relative;
    z-index: 1;
}

.btn.to-cart {
    background: linear-gradient(135deg, var(--primary-700) 0%, var(--primary-600) 100%);
    color: white;
    box-shadow: 0 4px 16px rgba(45, 74, 111, 0.2);
}

.btn.to-cart:hover {
    background: linear-gradient(135deg, var(--primary-800) 0%, var(--primary-700) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(45, 74, 111, 0.3);
}

.btn.buy-now {
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
    color: white;
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.2);
}

.btn.buy-now:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(16, 185, 129, 0.3);
}

.btn:active {
    transform: translateY(0) scale(0.97);
}

/* =====================
   MIN QUANTITY INFO
   ===================== */

.min-qty-info {
    position: relative;
    padding: var(--space-lg);
    background: linear-gradient(135deg, 
        rgba(251, 191, 36, 0.08) 0%, 
        rgba(251, 191, 36, 0.12) 100%);
    border-radius: 12px;
    border: 2px solid rgba(251, 191, 36, 0.3);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.min-qty-info::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, #fbbf24 0%, #f59e0b 100%);
}

.min-qty-info::after {
    content: '\f06a';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    right: var(--space-lg);
    top: 50%;
    transform: translateY(-50%);
    font-size: 48px;
    color: rgba(251, 191, 36, 0.15);
    pointer-events: none;
}

.min-qty-info:hover {
    border-color: rgba(251, 191, 36, 0.5);
    background: linear-gradient(135deg, 
        rgba(251, 191, 36, 0.12) 0%, 
        rgba(251, 191, 36, 0.16) 100%);
    box-shadow: 0 4px 16px rgba(251, 191, 36, 0.15);
}

.min-qty-label {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--text-base);
    font-weight: var(--font-bold);
    color: #b45309;
    margin-bottom: var(--space-sm);
    position: relative;
    z-index: 1;
}

.min-qty-label::before {
    content: '\f0ad';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: var(--text-lg);
    color: #f59e0b;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: rgba(251, 191, 36, 0.2);
    border-radius: 50%;
    flex-shrink: 0;
}

.min-qty-message {
    font-size: var(--text-sm);
    color: #78350f;
    line-height: 1.6;
    position: relative;
    z-index: 1;
    padding-right: 60px;
    font-weight: var(--font-medium);
}

/* =====================
   PRODUCT TABS
   ===================== */

.product-tabs {
    margin-top: var(--space-2xl);
    animation: fadeInScale 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.4s backwards;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-xs);
    border-bottom: 2px solid var(--neutral-100);
    margin-bottom: var(--space-xl);
    overflow-x: auto;
    scrollbar-width: none;
}

.tab-buttons::-webkit-scrollbar {
    display: none;
}

.tab-button {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--neutral-600);
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    position: relative;
}

.tab-button::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.tab-button:hover {
    color: var(--primary-700);
    background: var(--accent-light);
}

.tab-button.active {
    color: var(--primary-800);
    font-weight: var(--font-semibold);
}

.tab-button.active::before {
    transform: scaleX(1);
}

.tab-button i {
    font-size: var(--text-base);
}

/* =====================
   TAB CONTENT
   ===================== */

.tab-content {
    position: relative;
}

.tab-pane {
    display: none;
    animation: fadeInScale 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.tab-pane.active {
    display: block;
}

/* =====================
   DESCRIPTION TAB
   ===================== */

.description-content {
    padding: var(--space-lg);
    background: var(--neutral-50);
    border-radius: 12px;
    border: 1px solid var(--neutral-200);
}

.description-text {
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--neutral-700);
}

.description-text p {
    margin-bottom: var(--space-md);
}

.description-text ul,
.description-text ol {
    margin-left: var(--space-lg);
    margin-bottom: var(--space-md);
}

.description-text li {
    margin-bottom: var(--space-xs);
}

/* =====================
   CHARACTERISTICS TAB
   ===================== */

.characteristics-content {
    padding: var(--space-lg);
    background: var(--neutral-50);
    border-radius: 12px;
    border: 1px solid var(--neutral-200);
}

.characteristics-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.characteristic-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    padding: var(--space-md) var(--space-lg);
    background: white;
    transition: all 0.2s ease;
}

.characteristic-item:hover {
    background: var(--accent-light);
    transform: translateX(4px);
}

.characteristic-item.table-header {
    background: var(--primary-800);
    color: white;
    font-weight: var(--font-bold);
    border-radius: 10px 10px 0 0;
    position: sticky;
    top: 0;
    z-index: 10;
}

.characteristic-item.table-header:hover {
    transform: none;
}

.characteristic-name {
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--neutral-700);
}

.characteristic-item.table-header .characteristic-name,
.characteristic-item.table-header .characteristic-value {
    color: white;
}

.characteristic-value {
    font-size: var(--text-base);
    color: var(--neutral-800);
}

.unit {
    font-size: var(--text-sm);
    color: var(--neutral-500);
    font-weight: var(--font-normal);
}

/* =====================
   REVIEWS TAB
   ===================== */

.reviews-content {
    padding: var(--space-lg);
    background: var(--neutral-50);
    border-radius: 12px;
    border: 1px solid var(--neutral-200);
}

.reviews-header {
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-lg);
    border-bottom: 2px solid var(--neutral-200);
}

.reviews-summary h3 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--text-2xl);
    font-weight: var(--font-semibold);
    color: var(--primary-800);
    margin-bottom: var(--space-md);
}

.rating-summary {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.stars {
    display: flex;
    gap: var(--space-xs);
}

.stars i {
    color: #fbbf24;
    font-size: var(--text-lg);
}

.rating-text {
    font-size: var(--text-base);
    color: var(--neutral-600);
    font-weight: var(--font-medium);
}

/* =====================
   REVIEW CARDS
   ===================== */

.reviews-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.review-card {
    background: white;
    padding: var(--space-lg);
    border-radius: 12px;
    border: 1px solid var(--neutral-200);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.review-card:hover {
    border-color: var(--primary-500);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.review-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.review-avatar {
    flex-shrink: 0;
}

.avatar-icon {
    font-size: 48px;
    color: var(--primary-500);
}

.review-info {
    flex: 1;
}

.review-info strong {
    display: block;
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--primary-800);
    margin-bottom: var(--space-xs);
}

.review-date {
    font-size: var(--text-sm);
    color: var(--neutral-500);
}

.review-rating {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.review-body {
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--neutral-700);
}

/* =====================
   REVIEW REPLIES
   ===================== */

.review-replies {
    margin-top: var(--space-lg);
    padding-left: var(--space-lg);
    border-left: 3px solid var(--primary-500);
}

.admin-reply {
    background: var(--accent-light);
    padding: var(--space-md);
    border-radius: 10px;
    margin-bottom: var(--space-sm);
}

.reply-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.reply-header strong {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--primary-800);
}

.reply-date {
    font-size: var(--text-xs);
    color: var(--neutral-500);
}

.reply-body {
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--neutral-700);
}

/* =====================
   NO REVIEWS STATE
   ===================== */

.no-reviews-card {
    text-align: center;
    padding: var(--space-2xl);
    background: white;
    border-radius: 12px;
    border: 2px dashed var(--neutral-300);
}

.no-reviews-icon {
    margin-bottom: var(--space-lg);
}

.no-reviews-icon i {
    font-size: 64px;
    color: var(--neutral-400);
}

.no-reviews-card h4 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--neutral-700);
    margin-bottom: var(--space-sm);
}

.no-reviews-card p {
    font-size: var(--text-base);
    color: var(--neutral-500);
}

/* =====================
   WRITE REVIEW SECTION
   ===================== */

.write-review-section {
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 2px solid var(--neutral-200);
    text-align: center;
}

.write-review-section .btn {
    display: inline-flex;
    background: linear-gradient(135deg, var(--primary-700) 0%, var(--primary-600) 100%);
    color: white;
    box-shadow: 0 4px 16px rgba(45, 74, 111, 0.2);
}

.write-review-section .btn:hover {
    background: linear-gradient(135deg, var(--primary-800) 0%, var(--primary-700) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(45, 74, 111, 0.3);
}

/* =====================
   REVIEW MODAL
   ===================== */

.review-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    backdrop-filter: blur(4px);
}

.review-modal[aria-hidden="false"] {
    display: flex;
    animation: fadeInScale 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-content {
    background: white;
    border-radius: 16px;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    border-bottom: 2px solid var(--neutral-100);
}

.modal-header h4 {
    font-size: var(--text-2xl);
    font-weight: var(--font-semibold);
    color: var(--primary-800);
    margin: 0;
}

.close-modal {
    background: none;
    border: none;
    font-size: var(--text-2xl);
    color: var(--neutral-500);
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.close-modal:hover {
    background: var(--neutral-100);
    color: var(--neutral-800);
}

.modal-body {
    padding: var(--space-lg);
}

/* =====================
   REVIEW FORM
   ===================== */

#review-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.form-group label {
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--neutral-700);
}

.form-group input,
.form-group textarea {
    padding: var(--space-md);
    border: 1px solid var(--neutral-300);
    border-radius: 10px;
    font-size: var(--text-base);
    font-family: inherit;
    transition: all 0.2s ease;
    background: var(--neutral-50);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    background: white;
    box-shadow: 0 0 0 3px var(--accent-light);
}

/* =====================
   RATING INPUT
   ===================== */

.rating-input {
    display: flex;
    flex-direction: row-reverse;
    gap: var(--space-xs);
    justify-content: flex-end;
}

.rating-input input {
    display: none;
}

.rating-input label {
    cursor: pointer;
    font-size: var(--text-2xl);
    color: var(--neutral-300);
    transition: all 0.2s ease;
}

.rating-input label:hover,
.rating-input label:hover ~ label,
.rating-input input:checked ~ label {
    color: #fbbf24;
    transform: scale(1.1);
}

/* =====================
   RESPONSIVE DESIGN
   ===================== */

/* Tablets */
@media (max-width: 1024px) {
    .product-container {
        gap: var(--space-xl);
    }

    .product-gallery {
        position: relative;
        top: 0;
    }

    .product-title {
        font-size: var(--text-2xl);
    }

    .product-price {
        font-size: var(--text-3xl);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .breadcrumb {
        display: none;
    }

    .product-page .container {
        padding: 0 var(--space-md);
    }

    .product-container {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .product-gallery {
        order: -1;
        position: relative;
        top: 0;
        gap: var(--space-sm);
        align-self: auto;
    }

    .main-image-frame {
        width: 100%;
        height: auto;
        aspect-ratio: 1;
        max-width: 100%;
        touch-action: pan-y pinch-zoom;
        -webkit-overflow-scrolling: touch;
    }

    .main-image {
        pointer-events: none;
    }

    .zoom-button {
        display: none;
    }

    .image-thumbnails {
        display: none;
    }

    .thumbnail {
        display: none;
    }

    .product-title {
        font-size: var(--text-xl);
    }

    .product-price {
        font-size: var(--text-2xl);
    }

    .action-buttons {
        grid-template-columns: 1fr;
    }

    .product-tabs {
        margin-top: var(--space-xl);
    }

    .tab-buttons {
        gap: 0;
        margin-bottom: var(--space-lg);
    }

    .tab-button {
        font-size: var(--text-sm);
        padding: var(--space-sm) var(--space-md);
    }

    .description-content,
    .characteristics-content {
        padding: var(--space-md);
        border-radius: 10px;
    }

    .description-text {
        font-size: var(--text-sm);
        line-height: 1.6;
    }

    .description-text p {
        margin-bottom: var(--space-sm);
    }

    .description-text ul,
    .description-text ol {
        margin-left: var(--space-md);
        margin-bottom: var(--space-sm);
    }

    .characteristics-list {
        gap: 1px;
    }

    .characteristic-item {
        grid-template-columns: 1fr;
        gap: var(--space-xs);
        padding: var(--space-sm) var(--space-md);
    }

    .characteristic-name,
    .characteristic-value {
        font-size: var(--text-sm);
    }

    .unit {
        font-size: var(--text-xs);
    }

    .characteristic-item.table-header {
        display: none;
    }

    .reviews-content {
        padding: var(--space-md);
        border-radius: 10px;
    }

    .reviews-list {
        gap: var(--space-md);
    }

    .reviews-header {
        margin-bottom: var(--space-lg);
        padding-bottom: var(--space-md);
    }

    .reviews-summary h3 {
        font-size: var(--text-lg);
        gap: var(--space-xs);
        margin-bottom: var(--space-sm);
    }

    .stars i {
        font-size: var(--text-base);
    }

    .rating-text {
        font-size: var(--text-sm);
    }

    .review-card {
        padding: var(--space-md);
        border-radius: 10px;
    }

    .review-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
        margin-bottom: var(--space-sm);
    }

    .avatar-icon {
        font-size: 32px;
    }

    .review-info strong {
        font-size: var(--text-base);
    }

    .review-date {
        font-size: var(--text-xs);
    }

    .review-rating {
        margin-bottom: var(--space-sm);
    }

    .review-body {
        font-size: var(--text-sm);
        line-height: 1.5;
    }

    .review-replies {
        padding-left: var(--space-md);
        margin-top: var(--space-md);
        border-left-width: 2px;
    }

    .admin-reply {
        padding: var(--space-sm);
        border-radius: 8px;
    }

    .reply-header strong {
        font-size: var(--text-sm);
    }

    .reply-body {
        font-size: var(--text-sm);
        line-height: 1.5;
    }

    .no-reviews-card {
        padding: var(--space-xl);
    }

    .no-reviews-icon i {
        font-size: 48px;
    }

    .no-reviews-card h4 {
        font-size: var(--text-lg);
    }

    .no-reviews-card p {
        font-size: var(--text-sm);
    }

    .write-review-section {
        margin-top: var(--space-lg);
        padding-top: var(--space-md);
    }

    .modal-content {
        margin: var(--space-md);
        max-height: calc(100vh - 2rem);
        border-radius: 12px;
    }

    .modal-header {
        padding: var(--space-md);
    }

    .modal-header h4 {
        font-size: var(--text-lg);
    }

    .close-modal {
        width: 32px;
        height: 32px;
        font-size: var(--text-lg);
    }

    .modal-body {
        padding: var(--space-md);
    }

    .form-group label {
        font-size: var(--text-sm);
    }

    .form-group input,
    .form-group textarea {
        padding: var(--space-sm);
        font-size: var(--text-sm);
    }

    .rating-input label {
        font-size: var(--text-xl);
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .product-page .container {
        padding: 0 var(--space-sm);
    }

    .breadcrumb {
        font-size: var(--text-xs);
    }

    .quantity-controls {
        width: 100%;
        justify-content: space-between;
        padding: var(--space-xs);
        gap: 6px;
    }

    .quantity-btn {
        width: 32px;
        height: 32px;
        border-radius: 8px;
        font-size: var(--text-base);
        flex-shrink: 0;
    }

    .quantity-btn:hover {
        transform: scale(1.1);
    }

    .prod-quantity-input {
        width: 60px;
        height: 32px;
        flex: 1;
        max-width: 100px;
        font-size: var(--text-base);
        padding: 0;
    }

    .btn {
        padding: var(--space-sm) var(--space-md);
        font-size: var(--text-sm);
    }
}