/* ═══════════════════════════════════════════════════════════════════════════
   Product Detail Page
   ═══════════════════════════════════════════════════════════════════════════ */

.product-layout {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    margin-bottom: 64px;
}

/* ── Media Gallery ───────────────────────────────────────────────────────── */
.product-gallery {
    display: flex;
    gap: 16px;
    position: sticky;
    top: calc(var(--header-height) + var(--nav-height) + 20px);
    align-items: flex-start;
}

.product-gallery__thumbs {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 80px;
    flex-shrink: 0;
}

.product-gallery__thumb {
    width: 100%;
    aspect-ratio: 3/4;
    border: 2px solid transparent;
    cursor: pointer;
    overflow: hidden;
    border-radius: var(--radius-sm);
    transition: border-color var(--transition-fast);
}
.product-gallery__thumb:hover,
.product-gallery__thumb.is-active {
    border-color: var(--color-primary);
}
.product-gallery__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-gallery__main {
    flex: 1;
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-bg-light);
    aspect-ratio: 3/4;
}
.product-gallery__main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity var(--transition-fast);
}

/* ── Info & Actions ──────────────────────────────────────────────────────── */
.product-info {
    padding-top: 10px;
}

.product-info__brand {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
    display: block;
}

.product-info__title {
    font-size: 1.75rem;
    margin-bottom: 12px;
    color: var(--color-primary);
}

.product-info__price-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}
.product-info__price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
}
.product-info__price--old {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    text-decoration: line-through;
}
.product-info__discount {
    background: #FFF0F0;
    color: var(--color-accent);
    padding: 2px 8px;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 2px;
}

/* Attributes */
.product-attr {
    margin-bottom: 24px;
}
.product-attr__label {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 12px;
    display: flex;
    justify-content: space-between;
}
.product-attr__val {
    font-weight: 400;
    color: var(--color-text-light);
}

/* Colors */
.product-colors {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.product-color {
    width: 44px;
    height: 60px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.product-color:hover,
.product-color.is-active {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}
.product-color img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Sizes */
.product-sizes {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.product-size {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    height: 48px;
    padding: 0 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--color-white);
}
.product-size:not(.is-disabled):hover {
    border-color: var(--color-primary);
}
.product-size.is-active {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: var(--color-white);
}
.product-size.is-disabled {
    opacity: 0.4;
    cursor: not-allowed;
    background: var(--color-bg-light);
    text-decoration: line-through;
}

/* Add to Cart */
.product-actions {
    margin-top: 32px;
    display: flex;
    gap: 16px;
    align-items: center;
}
.product-qty {
    display: flex;
    align-items: center;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    height: 48px;
}
.product-qty__btn {
    width: 40px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
}
.product-qty__btn:hover { background: var(--color-bg-light); }
.product-qty__input {
    width: 40px;
    height: 100%;
    border: none;
    text-align: center;
    font-weight: 600;
    font-size: 1rem;
    padding: 0;
}
.product-qty__input:focus { outline: none; }

.product-actions .btn {
    flex: 1;
    height: 48px;
    font-size: 1rem;
}

/* ── Description & Details ───────────────────────────────────────────────── */
.product-details {
    margin-top: 48px;
    border-top: 1px solid var(--color-border-light);
    padding-top: 32px;
}
.product-details__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}
.product-specs {
    width: 100%;
    border-collapse: collapse;
}
.product-specs th,
.product-specs td {
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border-light);
    font-size: 0.875rem;
}
.product-specs th {
    text-align: left;
    color: var(--color-text-muted);
    font-weight: 500;
    width: 40%;
}
[dir="rtl"] .product-specs th { text-align: right; }

/* ── Mobile ──────────────────────────────────────────────────────────────── */
@media (max-width: 992px) {
    .product-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .product-gallery {
        flex-direction: column-reverse;
        position: static;
    }
    .product-gallery__thumbs {
        flex-direction: row;
        width: 100%;
        overflow-x: auto;
    }
    .product-gallery__thumb {
        width: 60px;
        flex-shrink: 0;
    }
    .product-details__grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}