.cart-header {
    max-width: 720px;
    margin-bottom: 26px;
}

.cart-header h1 {
    margin: 0;
    color: var(--spk-primary);
    font-size: clamp(2rem, 4vw, 3.1rem);
    line-height: 1.08;
}

.cart-header > p:last-child {
    margin: 12px 0 0;
    color: var(--spk-text-muted);
}

.cart-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 350px;
    gap: 24px;
    align-items: start;
}

.cart-items {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.cart-item {
    overflow: hidden;
    border: 1px solid var(--spk-border);
    border-radius: var(--spk-radius-md);
    background: var(--spk-surface);
    box-shadow: var(--spk-shadow-sm);
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
}

.cart-item.unavailable {
    border-color: rgba(157, 36, 31, 0.45);
}

.cart-item > img {
    width: 100%;
    height: 100%;
    min-height: 190px;
    object-fit: cover;
}

.cart-item-body {
    min-width: 0;
    padding: 18px;
}

.cart-item-heading {
    margin-bottom: 14px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
}

.cart-item-heading h2 {
    margin: 0;
    color: var(--spk-primary);
    font-size: 1.2rem;
}

.cart-item-heading > strong {
    color: var(--spk-secondary);
    font-size: 1.22rem;
}

.unavailable-label {
    margin-top: 6px;
    color: var(--spk-danger);
    font-size: 0.82rem;
    font-weight: 900;
    display: inline-flex;
}

.cart-controls {
    display: grid;
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 14px;
}

.cart-controls label {
    font-size: 0.9rem;
    font-weight: 800;
}

.cart-controls input,
.cart-controls textarea {
    margin-top: 6px;
}

.cart-controls textarea {
    min-height: 76px;
}

.cart-update-row {
    display: flex;
    justify-content: flex-end;
}

.cart-summary {
    position: sticky;
    top: 112px;
    border: 1px solid var(--spk-border);
    border-radius: var(--spk-radius-md);
    padding: 22px;
    background: var(--spk-surface);
    box-shadow: var(--spk-shadow-md);
}

.cart-summary h2 {
    margin: 0 0 16px;
    color: var(--spk-primary);
}

.summary-row,
.summary-total {
    display: flex;
    justify-content: space-between;
    gap: 16px;
}

.summary-row {
    border-bottom: 1px solid var(--spk-border);
    padding: 12px 0;
}

.summary-total {
    padding: 16px 0;
    color: var(--spk-primary);
    font-size: 1.2rem;
    font-weight: 900;
}

.cart-summary p {
    color: var(--spk-text-muted);
    font-size: 0.9rem;
}

.cart-summary .primary-button,
.cart-summary .secondary-button {
    width: 100%;
    margin-top: 10px;
}

.cart-summary form {
    margin-top: 14px;
    text-align: center;
}

@media (max-width: 940px) {
    .cart-layout {
        grid-template-columns: 1fr;
    }

    .cart-summary {
        position: static;
    }
}

@media (max-width: 680px) {
    .cart-item {
        grid-template-columns: 1fr;
    }

    .cart-item > img {
        min-height: 0;
        aspect-ratio: 16 / 9;
    }

    .cart-controls {
        grid-template-columns: 1fr;
    }
}