.header-cart {
    position: relative;
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--ink);
    color: var(--bg);
    border-radius: var(--radius);
    transition: background .15s ease;
}
.header-cart:hover { background: var(--accent); color: var(--bg); }
.header-cart svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.header-cart__count {
    position: absolute;
    top: -7px;
    right: -7px;
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--bg);
    border-radius: 999px;
    background: var(--accent);
    color: #fff;
    font: 500 10px/1 "jetbrains mono", monospace;
}

.cart-button-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}
.cart-button-loading::after {
    content: "";
    position: absolute;
    width: 18px;
    height: 18px;
    left: 50%;
    top: 50%;
    margin: -9px 0 0 -9px;
    border: 2px solid var(--bg);
    border-right-color: transparent;
    border-radius: 50%;
    animation: rd-cart-spin .7s linear infinite;
}
@keyframes rd-cart-spin { to { transform: rotate(360deg); } }

.cart-added-modal {
    position: fixed;
    inset: 0;
    z-index: 400;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(23, 23, 15, .52);
    opacity: 0;
    visibility: hidden;
    transition: opacity .18s ease, visibility .18s ease;
}
.cart-added-modal.is-open { opacity: 1; visibility: visible; }
.cart-added-modal__dialog {
    width: min(100%, 430px);
    padding: 30px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--bg);
    box-shadow: 0 24px 70px rgba(23, 23, 15, .2);
    transform: translateY(10px);
    transition: transform .18s ease;
}
.cart-added-modal.is-open .cart-added-modal__dialog { transform: translateY(0); }
.cart-added-modal__title { font-family: unbounded, sans-serif; font-size: 24px; font-weight: 700; }
.cart-added-modal__text { margin: 8px 0 26px; color: var(--ink-soft); }
.cart-added-modal__actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.cart-added-modal__continue,
.cart-added-modal__cart {
    min-height: 46px;
    padding: 11px 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    font: 500 14px/1.2 inter, sans-serif;
    cursor: pointer;
}
.cart-added-modal__continue { border: 1px solid var(--line); background: transparent; color: var(--ink); }
.cart-added-modal__continue:hover { border-color: var(--ink); }
.cart-added-modal__cart { border: 1px solid var(--ink); background: var(--ink); color: var(--bg); }
.cart-added-modal__cart:hover { border-color: var(--accent); background: var(--accent); color: var(--bg); }
body.cart-modal-open { overflow: hidden; }

.cart-page-grid { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 38px; align-items: start; margin-top: 36px; }
.cart-items { border-top: 1px solid var(--line); }
.cart-item {
    display: grid;
    grid-template-columns: 112px minmax(0, 1fr) auto;
    gap: 22px;
    align-items: center;
    padding: 22px 0;
    border-bottom: 1px solid var(--line);
    transition: opacity .18s ease;
}
.cart-item.is-updating { opacity: .48; pointer-events: none; }
.cart-item__image { width: 112px; height: 84px; object-fit: cover; border: 1px solid var(--line); background: var(--bg-tint); }
.cart-item__image-placeholder { width: 112px; height: 84px; border: 1px solid var(--line); background: var(--bg-tint); }
.cart-item__title { display: inline-block; font-weight: 500; margin-bottom: 5px; }
.cart-item__meta { font-family: "jetbrains mono", monospace; font-size: 12px; color: var(--ink-soft); }
.cart-item__controls { display: flex; align-items: center; gap: 18px; }
.cart-item__line-total { min-width: 96px; text-align: right; font-weight: 600; white-space: nowrap; }
.cart-quantity { display: inline-flex; align-items: stretch; border: 1px solid var(--line); }
.cart-quantity button { width: 34px; border: 0; background: var(--bg-tint); color: var(--ink); font-size: 18px; cursor: pointer; }
.cart-quantity input { width: 48px; height: 38px; padding: 0; border: 0; border-inline: 1px solid var(--line); box-shadow: none; text-align: center; border-radius: 0; appearance: textfield; }
.cart-quantity input::-webkit-inner-spin-button,
.cart-quantity input::-webkit-outer-spin-button { appearance: none; margin: 0; }
.cart-remove { border: 0; background: transparent; color: var(--ink-soft); font-size: 13px; cursor: pointer; border-bottom: 1px solid transparent; }
.cart-remove:hover { color: var(--ink); border-color: var(--ink); }
.cart-summary-card { position: sticky; top: 24px; padding: 26px; border: 1px solid var(--line); background: var(--bg); }
.cart-summary-card h2 { font-family: unbounded, sans-serif; font-size: 20px; margin-bottom: 22px; }
.cart-summary-line { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; padding: 9px 0; font-size: 14px; }
.cart-summary-line span:first-child { color: var(--ink-soft); }
.cart-summary-line strong { text-align: right; font-weight: 500; }
.cart-summary-total { margin-top: 12px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 20px; }
.cart-summary-total strong { font-family: unbounded, sans-serif; font-size: 22px; }
.cart-delivery-list { margin: 9px 0 18px; padding-top: 12px; border-top: 1px dashed var(--line); }
.cart-delivery-list div { display: flex; justify-content: space-between; gap: 14px; padding: 4px 0; font-size: 12px; color: var(--ink-soft); }
.cart-summary-actions { display: grid; gap: 10px; margin-top: 22px; }
.cart-summary-actions .btn-primary { width: 100%; text-align: center; border: 0; cursor: pointer; }
.cart-clear { width: 100%; padding: 12px 16px; border: 1px solid var(--line); background: transparent; color: var(--ink); cursor: pointer; }
.cart-clear:hover { border-color: var(--ink); }
.cart-error { margin-top: 18px; padding: 12px 14px; border: 1px solid #d9a6a6; background: #fff3f3; color: #8a2424; font-size: 13px; }
.cart-empty { margin-top: 30px; }
.cart-empty__action { margin-top: 28px; }

@media(max-width: 980px) {
    .cart-page-grid { grid-template-columns: 1fr; }
    .cart-summary-card { position: static; }
}
@media(max-width: 720px) {
    header .wrap { justify-content: space-between; gap: 12px; height: 68px; padding-left: 16px; padding-right: 16px; }
    header .logo { display: inline-flex; flex: 0 0 auto; margin-right: auto; font-size: 18px; white-space: nowrap; }
    .nav-phone { display: inline-flex; flex: 0 1 auto; margin-right: 0; font-size: 12px; white-space: nowrap; }
    .header-cart { width: 44px; height: 44px; flex: 0 0 44px; }
    .nav-burger { width: 24px; height: 24px; flex: 0 0 24px; }
    .cart-item { grid-template-columns: 84px minmax(0, 1fr); gap: 14px; }
    .cart-item__image, .cart-item__image-placeholder { width: 84px; height: 64px; }
    .cart-item__controls { grid-column: 1 / -1; justify-content: space-between; }
}
@media(max-width: 520px) {
    .header-cart { width: 44px; height: 44px; flex-basis: 44px; }
    .cart-added-modal__actions { grid-template-columns: 1fr; }
    .cart-page-grid { gap: 24px; }
    .cart-item { grid-template-columns: 1fr; }
    .cart-item__image, .cart-item__image-placeholder { width: 100%; height: auto; aspect-ratio: 4/3; }
    .cart-item__controls { grid-column: auto; flex-wrap: wrap; }
    .cart-item__line-total { margin-left: auto; }
}


/* Stage 36.17.2: product actions + checkout layout + mobile header polish */
.product-purchase-actions {
    display: grid;
    gap: 10px;
}
.product-purchase-actions .btn-primary {
    width: 100%;
    min-height: 54px;
    padding: 15px 28px;
    border: 1px solid var(--ink);
    box-sizing: border-box;
    text-align: center;
    cursor: pointer;
    appearance: none;
}
.product-purchase-actions .btn-primary:hover {
    border-color: var(--accent);
}
.product-cart-feedback {
    margin: -2px 0 2px;
}
.product-cart-feedback:empty {
    display: none;
}

.checkout-page-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 38px;
    align-items: start;
    margin-top: 36px;
}
.checkout-form-panel {
    padding-top: 24px;
    border-top: 1px solid var(--line);
}
.checkout-form {
    display: grid;
    gap: 18px;
}
.checkout-field {
    display: grid;
    gap: 8px;
}
.checkout-field label,
.checkout-delivery-options legend {
    font-size: 13px;
    font-weight: 500;
    color: var(--ink);
}
.checkout-field label span {
    color: var(--ink-soft);
    font-weight: 400;
}
.checkout-field input,
.checkout-field textarea {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--bg);
    color: var(--ink);
    font: inherit;
    box-shadow: none;
    box-sizing: border-box;
}
.checkout-field textarea {
    min-height: 104px;
    resize: vertical;
}
.checkout-field input:focus,
.checkout-field textarea:focus {
    outline: none;
    border-color: var(--ink);
}
.checkout-delivery-options {
    display: grid;
    gap: 10px;
    min-width: 0;
    margin: 2px 0 0;
    padding: 0;
    border: 0;
}
.checkout-delivery-options legend {
    margin-bottom: 2px;
    padding: 0;
}
.checkout-delivery-option {
    display: grid;
    grid-template-columns: 18px minmax(0, 1fr);
    gap: 12px;
    align-items: start;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    cursor: pointer;
    transition: border-color .15s ease, background .15s ease;
}
.checkout-delivery-option:hover,
.checkout-delivery-option:has(input:checked) {
    border-color: var(--ink);
}
.checkout-delivery-option input {
    width: 16px;
    height: 16px;
    margin: 2px 0 0;
    accent-color: var(--ink);
}
.checkout-delivery-option__body {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    font-size: 14px;
}
.checkout-delivery-option__body strong {
    font-weight: 500;
}
.checkout-delivery-option__body > span {
    color: var(--ink-soft);
    white-space: nowrap;
}
.checkout-delivery-empty,
.checkout-errors {
    padding: 13px 14px;
    border: 1px solid #d9a6a6;
    background: #fff3f3;
    color: #8a2424;
    font-size: 13px;
}
.checkout-errors {
    margin-top: 24px;
}
.checkout-errors ul {
    margin: 0;
    padding-left: 20px;
}
.checkout-submit {
    justify-self: start;
    min-width: 220px;
    border: 1px solid var(--ink);
    cursor: pointer;
    appearance: none;
}
.checkout-submit:disabled {
    opacity: .5;
    cursor: not-allowed;
}
.checkout-order-items {
    margin-bottom: 12px;
    border-top: 1px solid var(--line);
}
.checkout-order-item {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
    font-size: 14px;
}
.checkout-order-item > strong {
    flex: 0 0 auto;
    font-weight: 500;
    white-space: nowrap;
}
.checkout-order-item__meta {
    margin-top: 4px;
    color: var(--ink-soft);
    font-family: "jetbrains mono", monospace;
    font-size: 11px;
}
.checkout-back {
    display: block;
    margin-top: 18px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    text-align: center;
    font-size: 13px;
}
.checkout-back:hover {
    border-color: var(--ink);
}

@media(max-width: 980px) {
    .checkout-page-grid { grid-template-columns: 1fr; }
}
@media(max-width: 720px) {
    .checkout-page-grid { gap: 28px; }
    .checkout-submit { width: 100%; justify-self: stretch; }
}
@media(max-width: 420px) {
    header .wrap { gap: 9px; padding-left: 12px; padding-right: 12px; }
    header .logo { font-size: 16px; }
    .nav-phone { font-size: 10.5px; }
    .checkout-delivery-option__body { gap: 10px; font-size: 13px; }
}

@media(max-width: 360px) {
    header .wrap { gap: 7px; padding-left: 9px; padding-right: 9px; }
    header .logo { font-size: 15px; }
    .nav-phone { font-size: 9.5px; }
    .header-cart { width: 40px; height: 40px; flex-basis: 40px; }
}

/* Stage 36.20: promocodes */
.cart-promo-box {
    margin: 16px 0 8px;
    padding: 16px 0;
    border-top: 1px dashed var(--line);
    border-bottom: 1px dashed var(--line);
}
.cart-promo-box__title {
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 600;
}
.cart-promo-form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
}
.cart-promo-form input {
    min-width: 0;
    padding: 11px 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--bg);
    color: var(--ink);
    font: inherit;
    box-sizing: border-box;
    text-transform: uppercase;
}
.cart-promo-form button,
.cart-promo-remove {
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: transparent;
    color: var(--ink);
    cursor: pointer;
}
.cart-promo-form button:hover,
.cart-promo-remove:hover { border-color: var(--ink); }
.cart-promo-message {
    min-height: 18px;
    margin-top: 7px;
    color: var(--ink-soft);
    font-size: 12px;
}
.cart-promo-remove {
    margin-top: 7px;
    padding: 6px 9px;
    font-size: 12px;
}
@media(max-width: 420px) {
    .cart-promo-form { grid-template-columns: 1fr; }
}

.cart-promo-message.text-danger {
    color: #b42318;
}