/* ================================================= */
/* PRODUCT DETAIL – ULTRA MODERN & RESPONSIVE */
/* ================================================= */

:root {
    --pd-bg: #f8fafc;
    --pd-card: #ffffff;
    --pd-text: #0f172a;
    --pd-text-light: #475569;
    --pd-text-lighter: #64748b;
    --pd-border: #e2e8f0;
    --pd-primary: #2563eb;
    --pd-primary-dark: #1d4ed8;
    --pd-primary-light: #3b82f6;
    --pd-success: #10b981;
    --pd-success-dark: #059669;
    --pd-warning: #f59e0b;
    --pd-danger: #ef4444;
    --pd-radius: 24px;
    --pd-radius-sm: 16px;
    --pd-shadow: 0 20px 40px -12px rgba(0,0,0,0.1);
    --pd-shadow-hover: 0 30px 60px -12px rgba(37,99,235,0.25);
}

/* Page Container */
.product-detail-page {
    background: var(--pd-bg);
    min-height: 100vh;
    padding: 2rem 0 4rem;
}

/* Breadcrumb */
.product-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    font-size: 0.9rem;
    color: var(--pd-text-lighter);
    flex-wrap: wrap;
}

.product-breadcrumb a {
    color: var(--pd-text-lighter);
    text-decoration: none;
    transition: color 0.2s;
}

.product-breadcrumb a:hover {
    color: var(--pd-primary);
}

.product-breadcrumb i {
    font-size: 0.8rem;
}

.product-breadcrumb span {
    color: var(--pd-text);
    font-weight: 500;
}

/* ================================================= */
/* MAIN PRODUCT SECTION - سه ستونه */
/* ================================================= */
.product-main {
    display: grid;
    grid-template-columns: 1fr 1fr 320px;
    gap: 2rem;
    margin-bottom: 4rem;
    position: relative;
}

/* ================================================= */
/* PRODUCT GALLERY - ستون چپ */
/* ================================================= */
.product-gallery {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.product-gallery-main {
    position: relative;
    background: var(--pd-card);
    border-radius: var(--pd-radius);
    overflow: hidden;
    box-shadow: var(--pd-shadow);
    aspect-ratio: 1;
    margin-bottom: 1rem;
}

.product-main-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

/* Badges */
.product-badges {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.badge {
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: white;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.badge-sale {
    background: linear-gradient(135deg, var(--pd-danger), #dc2626);
}

.badge-new {
    background: linear-gradient(135deg, var(--pd-success), var(--pd-success-dark));
}

/* Wishlist Button */
.product-wishlist-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 2;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(4px);
    border: 1px solid var(--pd-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--pd-text);
    cursor: pointer;
    transition: all 0.3s;
}

.product-wishlist-btn:hover {
    background: var(--pd-danger);
    color: white;
    transform: scale(1.1);
}

/* Thumbnails */
.product-thumbnails {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    padding: 0.5rem 0;
}

.product-thumbnail {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
    border-radius: var(--pd-radius-sm);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.3s;
}

.product-thumbnail.active {
    border-color: var(--pd-primary);
}

.product-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ================================================= */
/* PRODUCT INFO - ستون وسط */
/* ================================================= */
.product-info {
    padding: 1rem 0;
}

.product-header {
    margin-bottom: 1.5rem;
}

.product-brand {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--pd-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.product-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--pd-text);
    margin: 0 0 1rem;
    line-height: 1.2;
}

/* Rating Summary */
.product-rating-summary {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.product-rating-stars {
    display: flex;
    gap: 2px;
}

.product-rating-stars i {
    color: #fbbf24;
    font-size: 1.2rem;
}

.product-rating-value {
    font-weight: 600;
    color: var(--pd-text);
}

.product-rating-count {
    color: var(--pd-text-lighter);
    font-size: 0.9rem;
}

/* Pricing */
.product-pricing {
    margin-bottom: 1.5rem;
}

.product-price-wrapper {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    flex-wrap: wrap;
}

.product-price-old {
    font-size: 1.2rem;
    color: #ef4444;
    text-decoration: line-through;
}

.product-price-current {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--pd-primary);
}

.product-price-save {
    font-size: 0.9rem;
    color: var(--pd-success);
    background: rgba(16,185,129,0.1);
    padding: 0.3rem 1rem;
    border-radius: 50px;
}

/* Stock Status */
.product-stock {
    margin-bottom: 1.5rem;
}

.stock-status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
}

.stock-status.in-stock {
    background: rgba(16,185,129,0.1);
    color: var(--pd-success-dark);
}

.stock-status.low-stock {
    background: rgba(245,158,11,0.1);
    color: var(--pd-warning);
}

.stock-status.out-of-stock {
    background: rgba(239,68,68,0.1);
    color: var(--pd-danger);
}

/* Cart Section - بدون اینپوت تعداد */

.product-action-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* گروه دکمه برای Already in Cart */
.cart-button-group {
    display: flex;
    gap: 1rem;
    width: 100%;
}

.cart-button-group .btn-product {
    flex: 1;
}

/* Buttons */
.btn-product {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

.btn-product i {
    font-size: 1.2rem;
}

.btn-product-primary {
    background: linear-gradient(135deg, var(--pd-primary), var(--pd-primary-dark));
    color: white;
    flex: 1;
}

.btn-product-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(37,99,235,0.3);
}

.btn-product-outline {
    background: transparent;
    border: 2px solid var(--pd-primary);
    color: var(--pd-primary);
    flex: 1;
}

.btn-product-outline:hover {
    background: var(--pd-primary);
    color: white;
}

.btn-product-secondary {
    background: #e2e8f0;
    color: var(--pd-text-lighter);
    cursor: not-allowed;
    flex: 1;
}

.btn-product-disabled {
    background: #e2e8f0;
    color: var(--pd-text-lighter);
    cursor: not-allowed;
    width: 100%;
}

/* Login Message */
.product-login-message {
    margin-top: 1rem;
    padding: 0.8rem;
    background: #fee2e2;
    border-radius: 50px;
    color: var(--pd-danger);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Meta Info */
.product-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 2rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem;
    background: white;
    border-radius: var(--pd-radius-sm);
    border: 1px solid var(--pd-border);
}

.meta-item i {
    font-size: 1.5rem;
    color: var(--pd-primary);
}

.meta-item div {
    display: flex;
    flex-direction: column;
}

.meta-item strong {
    font-size: 0.9rem;
    color: var(--pd-text);
}

.meta-item span {
    font-size: 0.8rem;
    color: var(--pd-text-lighter);
}

/* ================================================= */
/* CART SIDEBAR - ستون راست (بالا) */
/* ================================================= */
.product-cart-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.cart-card {
    background: white;
    border-radius: 28px;
    padding: 1.8rem;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
    border: 1px solid rgba(226, 232, 240, 0.6);
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
    background: rgba(255,255,255,0.95);
}

.cart-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 30px 60px -12px rgba(37,99,235,0.3);
    border-color: transparent;
}

.cart-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.8rem;
    padding-bottom: 1.2rem;
    border-bottom: 2px solid #f1f5f9;
}

.cart-card-header i {
    font-size: 1.8rem;
    color: var(--pd-primary);
    background: rgba(37,99,235,0.12);
    padding: 0.7rem;
    border-radius: 18px;
    transition: all 0.3s;
}

.cart-card:hover .cart-card-header i {
    background: var(--pd-primary);
    color: white;
}

.cart-card-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0;
    flex: 1;
    color: var(--pd-text);
    letter-spacing: -0.3px;
}

.cart-badge-large {
    background: linear-gradient(135deg, var(--pd-primary), var(--pd-primary-dark));
    color: white;
    padding: 0.3rem 1rem;
    border-radius: 40px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 4px 10px rgba(37,99,235,0.3);
}

/* آیتم‌های سبد خرید */
.cart-items-list {
    max-height: 320px;
    overflow-y: auto;
    margin-bottom: 1.2rem;
    padding-right: 0.5rem;
}

.cart-items-list::-webkit-scrollbar {
    width: 4px;
}

.cart-items-list::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 4px;
}

.cart-items-list::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

.cart-item {
    display: flex;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid #f1f5f9;
    animation: slideInItem 0.4s ease;
}

@keyframes slideInItem {
    from {
        opacity: 0;
        transform: translateX(-15px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.cart-item:last-child {
    border-bottom: none;
}

.cart-item-img {
    width: 70px;
    height: 70px;
    border-radius: 16px;
    object-fit: cover;
    border: 3px solid white;
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    transition: all 0.3s;
}

.cart-item:hover .cart-item-img {
    transform: scale(1.05);
    box-shadow: 0 12px 25px rgba(37,99,235,0.2);
}

.cart-item-details {
    flex: 1;
}

.cart-item-details h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 0.5rem;
    color: var(--pd-text);
    transition: color 0.2s;
}

.cart-item:hover .cart-item-details h4 {
    color: var(--pd-primary);
}

.cart-item-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-item-qty {
    font-size: 0.8rem;
    color: var(--pd-text-lighter);
    background: #f1f5f9;
    padding: 0.3rem 0.8rem;
    border-radius: 30px;
    font-weight: 500;
}

.cart-item-price {
    font-size: 1rem;
    font-weight: 700;
    color: var(--pd-primary);
    background: rgba(37,99,235,0.08);
    padding: 0.3rem 0.8rem;
    border-radius: 30px;
}

/* جمع کل سبد خرید */
.cart-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 0;
    margin: 0.5rem 0 1.2rem;
    border-top: 2px dashed #e2e8f0;
    border-bottom: 2px dashed #e2e8f0;
    font-size: 1.1rem;
}

.cart-total span {
    color: var(--pd-text-light);
    font-weight: 500;
}

.cart-total strong {
    color: var(--pd-text);
    font-size: 1.4rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--pd-primary), var(--pd-primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* دکمه‌های سبد خرید */
.cart-checkout-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    width: 100%;
    padding: 1.1rem;
    background: linear-gradient(135deg, var(--pd-primary), var(--pd-primary-dark));
    color: white;
    text-decoration: none;
    border-radius: 60px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.4s;
    border: none;
    cursor: pointer;
    box-shadow: 0 10px 25px rgba(37,99,235,0.3);
    position: relative;
    overflow: hidden;
}

.cart-checkout-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.6s;
}

.cart-checkout-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 35px rgba(37,99,235,0.4);
}

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

.cart-checkout-btn i {
    font-size: 1.3rem;
    transition: transform 0.3s;
}

.cart-checkout-btn:hover i {
    transform: translateX(5px);
}

/* حالت خالی سبد خرید */
.cart-empty-state {
    text-align: center;
    padding: 2rem 1.5rem;
    animation: fadeInUp 0.5s ease;
}

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

.cart-empty-state i {
    font-size: 5rem;
    color: #cbd5e1;
    margin-bottom: 1.2rem;
    transition: all 0.3s;
}

.cart-empty-state:hover i {
    transform: scale(1.1);
    color: var(--pd-primary);
}

.cart-empty-state p {
    color: var(--pd-text-lighter);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.cart-browse-btn, .cart-login-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.8rem 3rem;
    background: linear-gradient(135deg, var(--pd-primary), var(--pd-primary-dark));
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem;
    transition: all 0.3s;
    box-shadow: 0 8px 20px rgba(37,99,235,0.25);
}

.cart-browse-btn:hover, .cart-login-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(37,99,235,0.35);
}

.cart-browse-btn i, .cart-login-btn i {
    font-size: 1.1rem;
}

/* ================================================= */
/* TABS - دست نزن */
/* ================================================= */
.product-tabs {
    background: white;
    border-radius: var(--pd-radius);
    padding: 2rem;
    box-shadow: var(--pd-shadow);
    margin-bottom: 4rem;
}

.tab-nav {
    display: flex;
    gap: 2rem;
    list-style: none;
    padding: 0;
    margin: 0 0 2rem;
    border-bottom: 2px solid var(--pd-border);
    overflow-x: auto;
}

.tab-nav-item {
    padding: 1rem 0;
    font-weight: 600;
    color: var(--pd-text-lighter);
    cursor: pointer;
    position: relative;
    white-space: nowrap;
}

.tab-nav-item::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--pd-primary);
    transition: width 0.3s;
}

.tab-nav-item:hover {
    color: var(--pd-text);
}

.tab-nav-item.active {
    color: var(--pd-primary);
}

.tab-nav-item.active::after {
    width: 100%;
}

.tab-content {
    min-height: 300px;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.5s;
}

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

/* Description */
.description-content {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--pd-text-light);
}

/* Comments Section - دست نزن */
.comments-section h3 {
    font-size: 1.3rem;
    margin-bottom: 2rem;
}

.comments-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.comment-item {
    background: #f8fafc;
    border-radius: var(--pd-radius-sm);
    padding: 1.5rem;
    border: 1px solid var(--pd-border);
}

.comment-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.commenter-avatar i {
    font-size: 2.5rem;
    color: var(--pd-text-lighter);
}

.commenter-info h4 {
    font-size: 1rem;
    margin: 0 0 0.3rem;
}

.comment-stars {
    display: flex;
    gap: 2px;
}

.comment-stars i {
    color: #fbbf24;
    font-size: 0.9rem;
}

.comment-date {
    margin-left: auto;
    font-size: 0.85rem;
    color: var(--pd-text-lighter);
}

.comment-body p {
    margin: 0;
    line-height: 1.6;
    color: var(--pd-text-light);
}

.no-comments {
    text-align: center;
    padding: 3rem;
    color: var(--pd-text-lighter);
}

.no-comments i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* Add Review Form - دست نزن */
.add-review h4 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
}

.review-form {
    max-width: 600px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--pd-text);
}

.required {
    color: var(--pd-danger);
}

/* Star Rating Input - اصلاح شده */
.star-rating-input {
    display: flex;
    gap: 0.5rem;
    font-size: 2rem;
    cursor: pointer;
    direction: ltr;
}

.star-rating-input i {
    transition: all 0.2s ease;
    color: #cbd5e1;
}

.star-rating-input i.bi-star-fill {
    color: #fbbf24 !important;
}

.star-rating-input i:hover {
    color: #fbbf24 !important;
    transform: scale(1.1);
}

.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--pd-border);
    border-radius: var(--pd-radius-sm);
    font-size: 0.95rem;
    resize: vertical;
}

.form-group textarea:focus {
    outline: none;
    border-color: var(--pd-primary);
    box-shadow: 0 0 0 4px rgba(37,99,235,0.1);
}

.error-message {
    color: var(--pd-danger);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* Guest Review */
.guest-review {
    text-align: center;
    padding: 2rem;
    background: #f1f5f9;
    border-radius: var(--pd-radius);
}

.guest-review p {
    margin-bottom: 1rem;
}

.guest-review a {
    color: var(--pd-primary);
    text-decoration: none;
}

/* User Review */
.user-review {
    background: #f0fdf4;
    border-radius: var(--pd-radius);
    padding: 1.5rem;
}

/* Comment Login Warning */
.comment-login-warning {
    display: none;
    margin-top: 1rem;
    padding: 0.8rem;
    background: #fee2e2;
    border-radius: 50px;
    color: var(--pd-danger);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

/* ================================================= */
/* MOBILE CART */
/* ================================================= */

/* Mobile Cart Toggle (fixed at bottom) */
.mobile-cart-toggle {
    display: none;
    position: fixed;
    bottom: 25px;
    right: 25px;
    width: 65px;
    height: 65px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--pd-primary), var(--pd-primary-dark));
    color: white;
    border: none;
    font-size: 1.6rem;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(37,99,235,0.5);
    z-index: 100;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.mobile-cart-toggle:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: 0 20px 40px rgba(37,99,235,0.6);
}

.mobile-cart-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: linear-gradient(135deg, var(--pd-danger), #dc2626);
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.25rem 0.6rem;
    border-radius: 30px;
    box-shadow: 0 4px 10px rgba(239,68,68,0.4);
}

/* Mobile Cart Sidebar */
.mobile-cart-sidebar {
    position: fixed;
    top: 0;
    right: -100%;
    width: 90%;
    max-width: 380px;
    height: 100vh;
    background: white;
    z-index: 1000;
    padding: 1.8rem 1.5rem;
    transition: right 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: -10px 0 40px rgba(0,0,0,0.2);
    overflow-y: auto;
}

.mobile-cart-sidebar.active {
    right: 0;
}

.mobile-cart-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #f1f5f9;
}

.mobile-cart-header i {
    font-size: 1.8rem;
    color: var(--pd-primary);
    background: rgba(37,99,235,0.1);
    padding: 0.5rem;
    border-radius: 12px;
}

.mobile-cart-header h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin: 0;
    flex: 1;
    color: var(--pd-text);
}

.mobile-cart-close {
    background: #f1f5f9;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--pd-text-lighter);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.mobile-cart-close:hover {
    background: var(--pd-danger);
    color: white;
    transform: rotate(90deg);
}

.mobile-cart-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.mobile-cart-item {
    display: flex;
    gap: 1rem;
    padding: 0.8rem;
    background: #f8fafc;
    border-radius: 20px;
    border: 1px solid var(--pd-border);
    transition: all 0.3s;
}

.mobile-cart-item:hover {
    transform: translateX(-5px);
    border-color: var(--pd-primary);
    box-shadow: 0 8px 20px rgba(0,0,0,0.05);
}

.mobile-cart-item-img {
    width: 70px;
    height: 70px;
    border-radius: 16px;
    object-fit: cover;
    border: 2px solid white;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.mobile-cart-item-details {
    flex: 1;
}

.mobile-cart-item-details h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin: 0 0 0.5rem;
    color: var(--pd-text);
}

.mobile-cart-item-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.mobile-cart-item-price {
    font-weight: 700;
    color: var(--pd-primary);
    background: rgba(37,99,235,0.1);
    padding: 0.2rem 0.8rem;
    border-radius: 30px;
}

.mobile-cart-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 0;
    margin-bottom: 1.5rem;
    border-top: 2px solid #f1f5f9;
    border-bottom: 2px solid #f1f5f9;
    font-size: 1.1rem;
}

.mobile-cart-total strong {
    font-size: 1.4rem;
    color: var(--pd-primary);
}

.mobile-cart-checkout {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--pd-primary), var(--pd-primary-dark));
    color: white;
    text-decoration: none;
    border-radius: 60px;
    font-weight: 600;
    transition: all 0.3s;
}

.mobile-cart-empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--pd-text-lighter);
}

.mobile-cart-empty i {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: #cbd5e1;
}

/* ================================================= */
/* RESPONSIVE STYLES */
/* ================================================= */

@media (max-width: 1200px) {
    .product-main {
        grid-template-columns: 1fr 1fr 280px;
        gap: 1.5rem;
    }

    .product-title {
        font-size: 2rem;
    }

    .product-price-current {
        font-size: 2rem;
    }
}

@media (max-width: 992px) {
    .product-main {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }

    .product-gallery {
        position: static;
    }

    .product-cart-sidebar {
        grid-column: 1 / -1;
        position: static;
        max-width: 400px;
        margin: 0 auto;
    }

    .product-meta {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .product-detail-page {
        padding: 1rem 0 3rem;
    }

    .product-main {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .product-breadcrumb {
        margin-bottom: 1.5rem;
    }

    .product-title {
        font-size: 1.8rem;
    }

    .product-price-current {
        font-size: 1.8rem;
    }

    .product-action-buttons {
        flex-direction: column;
    }

    .cart-button-group {
        flex-direction: column;
    }

    .btn-product {
        width: 100%;
    }

    .tab-nav {
        gap: 1rem;
    }

    .tab-nav-item {
        font-size: 0.9rem;
    }

    .product-tabs {
        padding: 1.5rem;
    }

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

    .mobile-cart-toggle {
        display: flex;
    }

    .product-cart-sidebar {
        display: none;
    }

    .product-cart-sidebar {
        max-width: 100%;
    }
}

@media (max-width: 576px) {
    .product-title {
        font-size: 1.5rem;
    }

    .product-brand {
        font-size: 0.8rem;
    }

    .product-price-current {
        font-size: 1.5rem;
    }

    .product-price-old {
        font-size: 1rem;
    }

    .product-features ul {
        grid-template-columns: 1fr;
    }

    .comment-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .comment-date {
        margin-left: 0;
    }

    .cart-card {
        padding: 1.2rem;
    }

    .cart-item-img {
        width: 60px;
        height: 60px;
    }
}

@media (max-width: 400px) {
    .product-tabs {
        padding: 1rem;
    }

    .tab-nav-item {
        font-size: 0.8rem;
    }
}