:root {
    color-scheme: light;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: #111827;
    background: #fbfbfd;
}

* {
    box-sizing: border-box;
}

body {
    min-width: 320px;
    min-height: 100vh;
    margin: 0;
    background:
        radial-gradient(circle at 14% 0%, rgba(239, 68, 68, .055), transparent 28rem),
        radial-gradient(circle at 90% 12%, rgba(59, 130, 246, .045), transparent 30rem),
        #fbfbfd;
}

.product-page {
    min-height: 100vh;
    padding: 42px 14px;
}

.product-shell {
    width: min(100%, 760px);
    margin: 0 auto;
}

.product-card {
    padding: 20px;
    border: 1px solid rgba(17, 24, 39, .08);
    border-radius: 20px;
    background: rgba(255, 255, 255, .98);
    box-shadow: 0 18px 44px rgba(15, 23, 42, .07);
}

.product-breadcrumb {
    display: flex;
    gap: 7px;
    align-items: center;
    overflow-x: auto;
    padding-bottom: 4px;
    color: #6b7280;
    font-size: .78rem;
    white-space: nowrap;
}

.product-breadcrumb a {
    color: #4b5563;
    text-decoration: none;
}

.product-breadcrumb a:hover,
.product-breadcrumb a:focus-visible {
    color: #198754;
    text-decoration: underline;
}

.product-header {
    padding: 24px 0 20px;
}

.product-brand {
    margin: 0 0 6px;
    color: #198754;
    font-size: .8rem;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.product-header h1,
.product-unavailable h1 {
    margin: 0;
    color: #111827;
    font-size: clamp(1.55rem, 6vw, 2.25rem);
    font-weight: 800;
    line-height: 1.15;
}

.product-header > p:last-child,
.product-unavailable p {
    margin: 10px 0 0;
    color: #6b7280;
    line-height: 1.5;
}

.product-prices {
    padding: 14px;
    border: 1px solid rgba(17, 24, 39, .08);
    border-radius: 16px;
    background: #fbfbfc;
}

.product-prices h2,
.product-details h2,
.product-conditions h2,
.product-unavailable h2 {
    margin: 0 0 10px;
    color: #202633;
    font-size: .98rem;
    font-weight: 760;
}

.product-price-row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 11px 0;
    border-bottom: 1px dashed rgba(17, 24, 39, .12);
    color: #5f6675;
}

.product-price-row:last-child {
    border-bottom: 0;
}

.product-price-row strong {
    color: #111827;
    text-align: right;
}

.product-price-main strong {
    color: #176b38;
    font-size: 1.08rem;
}

.product-price-value {
    display: grid;
    justify-items: end;
    gap: 2px;
}

.product-price-value small {
    color: #6b7280;
    font-size: .78rem;
}

.product-details {
    margin-top: 20px;
}

.product-colors {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.product-colors span {
    padding: 6px 10px;
    border-radius: 999px;
    color: #4b5563;
    background: #f1f3f5;
    font-size: .82rem;
    font-weight: 650;
}

.product-conditions {
    margin-top: 22px;
    padding-top: 18px;
    border-top: 1px solid rgba(17, 24, 39, .08);
}

.product-conditions ul {
    margin: 0;
    padding-left: 20px;
    color: #4b5563;
    line-height: 1.45;
}

.product-conditions li {
    margin-bottom: 7px;
}

.product-conditions li:last-child {
    margin-bottom: 0;
}

.product-warning {
    display: grid;
    gap: 4px;
    margin-top: 18px;
    padding: 12px 14px;
    border: 1px solid #f0d99c;
    border-radius: 12px;
    color: #664d03;
    background: #fff8e1;
    font-size: .88rem;
    line-height: 1.4;
}

.product-actions {
    display: grid;
    gap: 10px;
    margin-top: 22px;
}

.button {
    min-height: 46px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    border: 1px solid transparent;
    border-radius: 7px;
    font-weight: 680;
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
}

.button:focus-visible {
    outline: 3px solid rgba(25, 135, 84, .25);
    outline-offset: 2px;
}

.button-primary {
    color: #fff;
    background: #198754;
    border-color: #198754;
}

.button-primary:hover {
    background: #157347;
    border-color: #146c43;
}

.button-secondary {
    color: #5c636a;
    background: #fff;
    border-color: #6c757d;
}

.button-secondary:hover {
    color: #fff;
    background: #6c757d;
}

.product-unavailable {
    padding: 22px 0 6px;
    text-align: center;
}

.product-unavailable h2 {
    font-size: 1.15rem;
}

.product-actions-single {
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .product-page {
        padding: 64px 20px;
    }

    .product-card {
        padding: 30px;
    }

    .product-actions {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    }

    .product-actions-single {
        grid-template-columns: 1fr;
    }
}