.product-detail-container {
    max-width: 1100px;
    margin: 20px auto 50px;
    padding: 0 20px;
    display: block; /* جهت جلوگیری از به‌هم‌ریختگی با main grid */
}

.breadcrumb-nav {
    margin-bottom: 16px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--bs-body-color);
    opacity: 0.7;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: opacity 0.2s ease, color 0.2s ease;
}

.back-link:hover {
    opacity: 1;
    color: var(--site-main-color);
}

.product-card {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
    background-color: var(--lang-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
    transition: background-color 0.25s ease, border-color 0.25s ease;
}

.product-gallery {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-wrapper {
    width: 100%;
    max-width: 400px;
    border-radius: 16px;
    overflow: hidden;
    background-color: var(--body-bg-color);
    border: 1px solid var(--border-color);
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-wrapper img {
    width: 100%;
    height: auto;
    max-height: 380px;
    object-fit: contain;
    border-radius: 12px;
    transition: transform 0.3s ease;
}

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

.product-details {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.product-title {
    font-size: 26px;
    font-weight: 800;
    color: var(--bs-body-color);
    line-height: 1.4;
    margin-bottom: 16px;
}

.product-divider {
    height: 1px;
    background-color: var(--border-color);
    margin-bottom: 20px;
}

.section-subtitle {
    font-size: 16px;
    font-weight: 700;
    color: var(--site-main-color);
    margin-bottom: 12px;
}

.product-description {
    color: var(--bs-body-color);
    opacity: 0.9;
    font-size: 15px;
    line-height: 1.85;
    text-align: justify;
    white-space: pre-line;
    margin-bottom: 30px;
}

.product-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn-primary {
    background-color: var(--site-main-color);
    color: #ffffff !important;
    padding: 12px 24px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    box-shadow: var(--site-main-shadow);
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.btn-primary:hover {
    background-color: var(--site-main2-color);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--bs-body-color) !important;
    border: 1px solid var(--border-color);
    padding: 12px 24px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.btn-secondary:hover {
    background-color: var(--lang-hover);
    transform: translateY(-2px);
}

/* واکنش‌گرایی صفحه تک محصول */
@media only screen and (max-width: 798px) {
    .product-card {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 20px;
    }

    .image-wrapper {
        max-width: 100%;
    }

    .product-title {
        font-size: 22px;
    }

    .product-actions {
        flex-direction: column;
    }

    .btn-primary, .btn-secondary {
        text-align: center;
        width: 100%;
    }
}