:root {
    --amazon-navy: #131921;
    --amazon-dark-blue: #232f3e;
    --amazon-yellow: #FFD814;
    --amazon-orange: #FFA41C;
    --amazon-bg: #EAEDED;
    --text-color: #0F1111;
    --link-blue: #007185;
    --white: #ffffff;
    --border: #d5d9d9;
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    margin: 0;
    font-family: Arial, sans-serif;
    -webkit-text-size-adjust: 100%;
}

button,
input,
select,
textarea {
    font: inherit;
    color: inherit;
}

button,
input[type="submit"],
input[type="button"] {
    appearance: none;
    -webkit-appearance: none;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: var(--amazon-bg);
    color: var(--text-color);
}

.site-header {
    background: var(--amazon-navy);
    color: var(--white);
    padding: 10px 20px;
}

.header-row {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    color: var(--white);
    text-decoration: none;
}

.logo span {
    color: var(--amazon-orange);
}

.search-container {
    flex: 1;
    display: flex;
    min-width: 200px;
}

.search-container input {
    width: 100%;
    border: none;
    border-radius: 8px 0 0 8px;
    padding: 10px 12px;
}

.search-btn {
    border: none;
    background: var(--amazon-orange);
    border-radius: 0 8px 8px 0;
    padding: 0 16px;
    cursor: pointer;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-link {
    color: var(--white);
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 8px 10px;
    font-size: 13px;
}

.header-link:hover,
.active-link {
    border-color: var(--white);
}

.user-chip {
    color: var(--white);
    font-size: 13px;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 8px;
    padding: 8px 10px;
}

.shopping-cart-container {
    position: relative;
}

.cart-checkbox {
    display: none;
}

.cart-label {
    display: flex;
    flex-direction: column;
    min-width: 130px;
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 7px 10px;
    cursor: pointer;
}

.cart-label strong {
    color: var(--amazon-orange);
}

.cart-label:hover {
    border-color: var(--white);
}

.shopping-list-dropdown {
    display: none;
    position: absolute;
    right: 0;
    top: 48px;
    width: 360px;
    background: var(--white);
    color: var(--text-color);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: 0 12px 28px rgba(15, 17, 17, 0.18);
    padding: 14px;
    z-index: 30;
}

.shopping-list-dropdown h3 {
    margin: 0 0 8px;
    font-size: 16px;
}

.shopping-list-dropdown ul {
    list-style: none;
    margin: 0;
    padding: 0;
    max-height: 220px;
    overflow-y: auto;
}

.shopping-list-dropdown li {
    display: grid;
    grid-template-columns: 1.4fr 70px 80px 70px;
    align-items: center;
    gap: 6px;
    padding: 8px 0;
    border-bottom: 1px solid #eef1f1;
}

.shopping-cart-container:hover .shopping-list-dropdown,
.cart-checkbox:checked ~ .shopping-list-dropdown {
    display: block;
}

.cart-qty-input {
    width: 64px;
    padding: 4px;
}

.cart-delete-btn {
    border: 1px solid var(--border);
    background: var(--white);
    border-radius: 6px;
    padding: 4px 6px;
    cursor: pointer;
}

.checkout-btn,
.add-to-cart,
.add-to-cart-btn {
    border: 1px solid #f2c200;
    border-radius: 18px;
    cursor: pointer;
    font-weight: 600;
}

.checkout-btn {
    width: 100%;
    margin-top: 12px;
    background: var(--amazon-orange);
    padding: 9px 10px;
}

.category-bar {
    background: var(--amazon-dark-blue);
    padding: 0 20px;
}

.category-bar ul {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0;
    list-style: none;
    display: flex;
    align-items: center;
    overflow-x: auto;
}

.category-bar a {
    color: var(--white);
    text-decoration: none;
    padding: 10px 12px;
    display: block;
    border: 1px solid transparent;
    white-space: nowrap;
    font-size: 14px;
}

.category-bar a:hover {
    border-color: var(--white);
}

.all-menu {
    font-weight: 700;
}

.breadcrumbs {
    background: var(--white);
    padding: 10px 20px;
    font-size: 13px;
    border-bottom: 1px solid var(--border);
}

.breadcrumbs a {
    color: var(--link-blue);
    text-decoration: none;
}

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

.main-content {
    width: min(1400px, 95%);
    margin: 16px auto 28px;
    flex: 1;
}

.hero-banner {
    background: linear-gradient(90deg, #fff 0%, #f6f8ff 100%);
    border-radius: 12px;
    padding: 28px;
    border: 1px solid var(--border);
    margin-bottom: 18px;
}

.hero-tag {
    display: inline-block;
    padding: 5px 10px;
    border-radius: 999px;
    background: #edf7ff;
    color: #1f5f96;
    font-size: 12px;
    margin: 0 0 8px;
}

.hero-banner h1 {
    margin: 0 0 10px;
    font-size: 32px;
}

.hero-banner p {
    margin: 0;
    color: #444;
    line-height: 1.5;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(235px, 1fr));
    gap: 16px;
}

.product-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px;
    display: flex;
    flex-direction: column;
    min-height: 350px;
}

.product-card:hover {
    box-shadow: 0 8px 20px rgba(20, 23, 24, 0.1);
}

.product-card a {
    text-decoration: none;
}

.product-card img {
    width: 100%;
    height: 190px;
    object-fit: contain;
    margin-bottom: 10px;
}

.product-card h4 {
    margin: 0;
    color: #0f3d63;
    font-size: 16px;
    min-height: 40px;
}

.product-category {
    margin: 8px 0 0;
    font-size: 12px;
    color: #5f6b73;
}

.price,
.price-large {
    margin: 8px 0;
    color: #b12704;
    font-weight: 700;
}

.price {
    font-size: 24px;
}

.price::before {
    content: "$";
    font-size: 15px;
    vertical-align: top;
}

.price-large {
    font-size: 30px;
}

.product-card-actions {
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 8px;
}

.detail-link {
    flex: 1;
    text-align: center;
    text-decoration: none;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 7px 8px;
    color: #1e486a;
    font-size: 14px;
}

.add-to-cart {
    background: var(--amazon-yellow);
    padding: 8px 12px;
}

.product-detail-container {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    display: grid;
    grid-template-columns: 1.1fr 1fr 300px;
    gap: 20px;
}

.product-image-box {
    background: #fafafa;
    border-radius: 10px;
    padding: 14px;
    border: 1px solid #eceeee;
}

.main-img {
    width: 100%;
    max-height: 440px;
    object-fit: contain;
}

.product-mini-notice {
    margin-top: 10px;
    color: #607280;
    font-size: 12px;
}

.product-title {
    font-size: 30px;
    margin-top: 0;
    margin-bottom: 8px;
}

.brand-link {
    margin: 0;
    color: var(--link-blue);
}

.product-description p {
    line-height: 1.6;
}

.buy-box {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px;
    height: fit-content;
}

.buy-box-title {
    margin: 0;
    font-weight: 700;
}

.stock-text {
    color: #067d62;
    margin: 0 0 12px;
}

.add-to-cart-btn {
    width: 100%;
    background: var(--amazon-yellow);
    padding: 10px;
}

.buy-now-btn {
    display: block;
    text-align: center;
    text-decoration: none;
    width: 100%;
    background: var(--amazon-orange);
    color: #111;
    border: 1px solid #c2862f;
    border-radius: 18px;
    padding: 10px;
    margin-top: 8px;
    font-weight: 700;
}

.admin-main {
    padding-bottom: 10px;
}

.admin-two-containers {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.admin-container {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px;
}

.admin-container-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #eef2f2;
    margin-bottom: 12px;
}

.admin-container-header h2 {
    margin: 0 0 10px;
}

.admin-page-title {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 14px;
}

.admin-page-title h1 {
    margin: 0 0 4px;
}

.admin-page-title p {
    margin: 0;
    color: #5f6b73;
}

.admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 14px;
}

.admin-card,
.admin-list-section,
.message-box {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px;
}

.admin-card h2,
.admin-list-section h2 {
    margin-top: 0;
}

.admin-card h3,
.admin-list-section h3 {
    margin-top: 0;
}

.admin-card form p {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.admin-card input,
.admin-card select,
.admin-card textarea {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 9px;
    font-size: 14px;
}

.admin-list-section {
    margin-top: 14px;
}

.admin-list-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.admin-list-section li {
    border-bottom: 1px solid #edf1f1;
    padding: 9px 0;
}

.auth-main {
    display: flex;
    justify-content: center;
    align-items: center;
}

.auth-card {
    width: min(480px, 100%);
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
}

.auth-card form p {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.auth-card input {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px;
}

.auth-tip {
    margin-top: 12px;
    font-size: 14px;
}

footer {
    margin-top: auto;
    background: var(--amazon-dark-blue);
    color: var(--white);
    text-align: center;
    padding: 30px 10px;
}

@media (max-width: 1100px) {
    .product-detail-container {
        grid-template-columns: 1fr;
    }

    .admin-two-containers {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .header-row {
        flex-wrap: wrap;
    }

    .search-container {
        order: 3;
        width: 100%;
    }

    .shopping-list-dropdown {
        width: min(94vw, 360px);
    }
}