/* assets/css/product-detail.css */

/* Clear fixed site header */
.pdp-hero {
    padding-top: calc(var(--site-header-total, 7rem) + clamp(1.25rem, 3vw, 2rem));
}

/* --- Breadcrumbs --- */
.breadcrumbs {
    font-size: 0.85rem;
    color: var(--clr-text-main);
    margin-bottom: 2rem;
    line-height: 1.5;
    word-break: break-word;
}

.breadcrumbs a {
    color: var(--clr-secondary);
    text-decoration: none;
}

.breadcrumbs a:hover {
    text-decoration: underline;
}

/* --- PDP Layout (The Buy Box) --- */
.pdp-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 4vw, 5rem);
    align-items: start;
}

/* Gallery */
.main-image {
    background-color: var(--clr-bg-alt);
    border-radius: var(--radius-sm);
    overflow: hidden;
    aspect-ratio: 4/5;
}

.main-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 1.5rem;
}

.thumbnail-row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.thumb {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 4px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color 0.3s;
}

.thumb.active,
.thumb:hover {
    border-color: var(--clr-secondary);
}

/* Info Side */
.product-category {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--clr-secondary);
    display: block;
    margin-bottom: 1rem;
}

.pdp-info h1 {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    color: var(--clr-primary);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.pdp-price {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 4vw, 2rem);
    color: var(--clr-primary);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.currency-split {
    color: var(--clr-border);
    font-weight: 300;
    margin: 0 0.5rem;
}

.pdp-short-desc {
    font-size: clamp(1rem, 2.5vw, 1.1rem);
    line-height: 1.7;
    color: var(--clr-text-main);
    margin-bottom: 1.5rem;
}

.key-benefits-list {
    list-style: none;
    padding: 0;
    margin-bottom: 2.5rem;
}

.key-benefits-list li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.5rem;
    color: var(--clr-text-main);
}

.key-benefits-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--clr-secondary);
    font-weight: bold;
}

/* Commerce Forms */
.add-to-cart-form {
    background: var(--clr-bg-alt);
    padding: clamp(1.25rem, 3vw, 2rem);
    border-radius: var(--radius-sm);
    border: 1px solid var(--clr-border);
}

.quantity-selector {
    display: flex;
    align-items: center;
    border: 1px solid var(--clr-border);
    border-radius: 4px;
    background: #FFF;
    width: fit-content;
}

.qty-btn {
    background: transparent;
    border: none;
    min-width: 44px;
    min-height: 44px;
    padding: 0.5rem 1rem;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--clr-primary);
}

.quantity-selector input {
    width: 50px;
    text-align: center;
    border: none;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
}

/* --- Deep Dive Sections --- */
.deep-dive-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 4vw, 4rem);
}

.data-block h2 {
    font-size: clamp(1.35rem, 3vw, 1.75rem);
    color: var(--clr-primary);
    margin-bottom: 1rem;
}

.stats-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem 2rem;
}

.stat-mini {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.stat-num {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    color: var(--clr-secondary);
    font-weight: 700;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.active-item {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--clr-border);
}

.active-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.active-item strong {
    display: block;
    color: var(--clr-primary);
    margin-bottom: 0.25rem;
}

/* --- Protocol Steps --- */
.protocol-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(1.5rem, 3vw, 3rem);
    max-width: 900px;
    margin: 3rem auto 0 auto;
}

.step-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 1rem;
}

.step h4 {
    font-size: 1.25rem;
    color: var(--clr-primary);
    margin-bottom: 0.5rem;
}

/* Responsive */
@media (max-width: 992px) {
    .pdp-layout,
    .deep-dive-grid,
    .protocol-steps {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .pdp-hero {
        padding-top: calc(var(--site-header-total, 4.5rem) + 1.25rem);
    }

    .main-image img {
        padding: 1rem;
    }

    .thumb {
        width: 64px;
        height: 64px;
    }

    .add-to-cart-form .btn,
    .add-to-cart-form button[type="submit"] {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .breadcrumbs {
        font-size: 0.78rem;
        margin-bottom: 1.25rem;
    }

    .protocol-steps {
        gap: 1.5rem;
    }
}