.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-display);
    font-size: 1rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
    border: 2px solid transparent;
}

.btn--primary {
    background: linear-gradient(180deg, var(--color-red-bright), var(--color-red));
    color: #fff;
    box-shadow: 0 4px 0 #5c1212, 0 8px 16px var(--color-shadow);
}

.btn--primary:hover {
    transform: translateY(-2px);
    color: #fff;
    box-shadow: 0 6px 0 #5c1212, 0 12px 24px var(--color-shadow);
}

.btn--ghost {
    background: transparent;
    color: var(--color-cream);
    border-color: var(--color-gold);
}

.btn--ghost:hover {
    background: rgba(201, 162, 39, 0.2);
    color: var(--color-cream);
}

.btn--cart {
    width: 100%;
    background: linear-gradient(180deg, #d4a84b, var(--color-gold));
    color: var(--color-ink);
    font-weight: 600;
    box-shadow: 0 3px 0 #8a6d15, 0 6px 12px var(--color-shadow);
}

.btn--cart:hover {
    transform: translateY(-1px);
}

.btn--block {
    width: 100%;
}

.promo-card {
    text-align: center;
    padding: var(--space-md);
    background: var(--color-cream);
    border: 3px solid var(--color-wood);
    border-radius: var(--radius-md);
    box-shadow: 4px 4px 0 var(--color-wood-dark);
    transition: transform var(--transition);
}

.promo-card:hover {
    transform: translateY(-4px) rotate(-0.5deg);
}

.promo-card__icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 0.5rem;
    filter: drop-shadow(0 4px 8px var(--color-shadow));
}

.promo-card h2 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--color-green);
}

.promo-card p {
    font-size: 0.95rem;
    color: var(--color-ink-soft);
}

/* —— Product cards —— */
.product-card {
    perspective: 900px;
}

.product-card__frame {
    position: relative;
    background: linear-gradient(160deg, #fff9ee 0%, var(--color-paper) 100%);
    border: 5px solid var(--color-wood);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    box-shadow: var(--shadow-card);
    transform-style: preserve-3d;
    transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1), box-shadow var(--transition);
}

.product-card:hover .product-card__frame {
    transform: translateY(-8px) rotateX(4deg) rotateY(-3deg);
    box-shadow:
        0 6px 0 var(--color-wood-dark),
        0 24px 48px var(--color-shadow);
}

.product-card__badge {
    position: absolute;
    top: -10px;
    right: 12px;
    z-index: 3;
    background: var(--color-red);
    color: #fff;
    font-family: var(--font-hand);
    font-size: 1.1rem;
    padding: 0.2rem 0.75rem;
    border-radius: var(--radius-sm);
    transform: rotate(3deg);
    box-shadow: 0 3px 8px var(--color-shadow);
}

.product-card__visual {
    position: relative;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    margin-bottom: var(--space-sm);
    background: radial-gradient(ellipse at center, #2a2118 0%, #1a1510 70%);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.5);
}

.product-card__img {
    width: 85%;
    height: 85%;
    object-fit: contain;
    filter: drop-shadow(0 16px 24px rgba(0, 0, 0, 0.6));
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.product-card:hover .product-card__img {
    transform: scale(1.08) translateY(-6px) rotate(-2deg);
}

.product-card__chalk {
    background: linear-gradient(180deg, #3d5240, #2d4030);
    border: 3px solid #1a2820;
    border-radius: var(--radius-sm);
    padding: var(--space-sm);
    margin-bottom: var(--space-sm);
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.3);
}

.product-card__name {
    font-family: var(--font-hand);
    font-size: 1.5rem;
    color: var(--color-chalk);
    line-height: 1.2;
}

.product-card__price {
    display: flex;
    align-items: baseline;
    gap: 0.25rem;
    margin-top: 0.25rem;
}

.product-card__amount {
    font-family: var(--font-display);
    font-size: 1.6rem;
    color: var(--color-gold);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

.product-card__unit {
    font-size: 0.9rem;
    color: rgba(232, 240, 230, 0.8);
}

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

.qty-control {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    border: 2px solid var(--color-wood);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: #fff;
}

.qty-control__btn {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-ink);
    background: var(--color-paper);
    transition: background var(--transition);
}

.qty-control__btn:hover {
    background: var(--color-gold);
}

.qty-control__input {
    width: 4rem;
    text-align: center;
    border: none;
    border-inline: 2px solid var(--color-wood);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    padding: 0.5rem;
    -moz-appearance: textfield;
}

.qty-control__input::-webkit-outer-spin-button,
.qty-control__input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* —— Cart panel —— */
.cart-panel {
    position: fixed;
    inset: 0;
    z-index: 200;
    pointer-events: none;
}

.cart-panel.is-open {
    pointer-events: auto;
}

.cart-panel__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(26, 20, 14, 0.6);
    opacity: 0;
    transition: opacity var(--transition);
}

.cart-panel.is-open .cart-panel__backdrop {
    opacity: 1;
}

.cart-panel__drawer {
    position: absolute;
    top: 0;
    right: 0;
    width: min(420px, 100%);
    height: 100%;
    background: var(--color-cream);
    border-left: 6px solid var(--color-wood);
    box-shadow: -12px 0 40px var(--color-shadow);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.45s cubic-bezier(0.34, 1.2, 0.64, 1);
}

.cart-panel.is-open .cart-panel__drawer {
    transform: translateX(0);
}

.cart-panel__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    background: var(--color-paper);
    border-bottom: 3px solid var(--color-wood);
}

.cart-panel__head h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    letter-spacing: 0.06em;
}

.cart-panel__close {
    font-size: 2rem;
    line-height: 1;
    color: var(--color-ink);
    padding: 0.25rem 0.5rem;
}

.cart-panel__body {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-md);
}

.cart-panel__empty {
    text-align: center;
    color: var(--color-ink-soft);
    font-style: italic;
    padding: var(--space-lg);
}

.cart-item {
    display: grid;
    grid-template-columns: 64px 1fr auto;
    gap: var(--space-sm);
    align-items: center;
    padding: var(--space-sm);
    background: #fff;
    border: 2px solid var(--color-wood);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
    animation: cart-item-in 0.4s ease;
}

.cart-item__thumb {
    width: 64px;
    height: 64px;
    object-fit: contain;
    background: #1a1510;
    border-radius: var(--radius-sm);
    padding: 4px;
}

.cart-item__info h4 {
    font-family: var(--font-hand);
    font-size: 1.2rem;
    line-height: 1.2;
}

.cart-item__info p {
    font-size: 0.85rem;
    color: var(--color-ink-soft);
}

.cart-item__subtotal {
    font-weight: 700;
    color: var(--color-green);
    white-space: nowrap;
}

.cart-item__actions {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
    padding-top: 0.25rem;
    border-top: 1px dashed var(--color-paper);
}

.cart-item__qty {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.cart-item__qty button {
    width: 1.75rem;
    height: 1.75rem;
    background: var(--color-paper);
    border: 1px solid var(--color-wood);
    border-radius: 4px;
    font-weight: 700;
}

.cart-item__remove {
    font-size: 0.85rem;
    color: var(--color-red);
    text-decoration: underline;
}

.cart-panel__foot {
    padding: var(--space-md);
    background: var(--color-paper);
    border-top: 3px solid var(--color-wood);
}

.cart-panel__entrega-title {
    font-family: var(--font-display);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

.entrega-option {
    display: block;
    margin-bottom: 0.5rem;
    cursor: pointer;
}

.entrega-option input {
    position: absolute;
    opacity: 0;
}

.entrega-option__box {
    display: block;
    padding: 0.75rem;
    border: 2px solid var(--color-wood);
    border-radius: var(--radius-sm);
    background: #fff;
    transition: var(--transition);
}

.entrega-option--active .entrega-option__box,
.entrega-option input:checked + .entrega-option__box {
    border-color: var(--color-green);
    background: rgba(45, 90, 39, 0.08);
    box-shadow: 0 0 0 2px var(--color-green-light);
}

.entrega-option--disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.entrega-option__box strong {
    display: block;
    font-family: var(--font-display);
    font-size: 0.95rem;
}

.entrega-option__box small {
    color: var(--color-ink-soft);
}

.cart-panel__total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: var(--space-md) 0;
    padding: var(--space-sm);
    background: var(--color-chalk);
    border: 2px dashed var(--color-green);
    border-radius: var(--radius-sm);
}

.cart-panel__total strong {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--color-red);
}

.toast {
    position: fixed;
    bottom: var(--space-md);
    left: 50%;
    transform: translateX(-50%) translateY(120%);
    z-index: 300;
    padding: 0.85rem 1.5rem;
    background: var(--color-green);
    color: #fff;
    font-family: var(--font-hand);
    font-size: 1.25rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-3d);
    transition: transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
    pointer-events: none;
    max-width: 90vw;
    text-align: center;
}

.toast.is-visible {
    transform: translateX(-50%) translateY(0);
}

.product-card.is-added .product-card__frame {
    animation: card-pulse 0.6s ease;
}