:root {
    --bg: #f5f6f8;
    --text: #1a1f35;
    --text-light: #5a6376;
    --card: #ffffff;
    --product-card-bg: #d2d7e2;
    --product-bg: #b6bdcc;
    --accent: #0052cc;
    --accent-hover: #0043a7;
    --accent-light: #e6f1ff;
    --border: #d0d8e0;
    --border-light: #e8ecf1;
    --success: #0d652d;
    --success-bg: #dffcf0;
    --error: #d1410a;
    --error-bg: #fff5f1;
    --warning: #974707;
    --warning-bg: #fff8f3;
    --info: #7f5a00;
    --info-bg: #fffbeb;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font: 16px/1.6 -apple-system, BlinkMacSystemFont, 'Segoe UI',
        Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
}

header {
    background: linear-gradient(135deg, #0052cc 0%, #003d9e 100%);
    color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

header .container {
    padding: 24px 16px;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo-slot {
    min-width: 0;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.language-switcher {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    margin-left: auto;
    font-size: 14px;
    white-space: nowrap;
}

.language-label {
    opacity: 0.85;
}

.language-link {
    display: inline-flex;
    align-items: center;
    color: #fff;
    padding: 5px 8px;
    border: 1px solid transparent;
    border-radius: 6px;
    text-decoration: none;
    transition: background-color 0.2s, border-color 0.2s;
}

.language-link:hover,
.language-link:focus-visible {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.65);
    outline: none;
}

.language-link.active {
    background: #fff;
    color: var(--accent);
    border-color: #fff;
    font-weight: 700;
}

.language-separator {
    opacity: 0.65;
}

.container {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 0 16px;
}

main .container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 32px;
    padding: 32px 16px 40px;
}

@media (max-width: 1400px) {
    main .container {
        grid-template-columns: 1.5fr 1fr;
        gap: 24px;
    }
}

@media (max-width: 1024px) {
    main .container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    header .container {
        padding-top: 16px;
        padding-bottom: 16px;
    }

    .header-container {
        align-items: flex-start;
        gap: 12px;
    }

    .logo-slot {
        font-size: 21px;
    }

    .language-switcher {
        font-size: 13px;
        gap: 4px;
    }

    .language-link {
        padding: 4px 5px;
    }
}

.card {
    background: var(--card);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.info-banner {
    background: var(--info-bg);
    border: 1px solid #f59e0b;
    border-radius: 10px;
    padding: 14px 16px;
    margin-bottom: 20px;
    color: var(--info);
    font-size: 14px;
    line-height: 1.6;
}

.info-banner strong {
    display: block;
    margin-bottom: 6px;
    font-weight: 700;
    font-size: 15px;
}

.info-banner div {
    margin-left: 0;
}

.info-banner-item {
    display: block;
    margin-bottom: 3px;
}

h1 {
    margin-top: 0;
    margin-bottom: 12px;
    font-size: 32px;
    font-weight: 700;
    color: var(--text);
    line-height: 1.2;
}

h2 {
    margin-top: 24px;
    margin-bottom: 16px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    line-height: 1.2;
}

h2:first-child {
    margin-top: 0;
}

h3 {
    margin-top: 0;
    margin-bottom: 8px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
}

p {
    margin: 0 0 12px 0;
    color: var(--text-light);
}

input,
select,
textarea {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

input.error,
select.error,
textarea.error {
    border-color: var(--error);
}

input.error:focus,
select.error:focus,
textarea.error:focus {
    box-shadow: 0 0 0 3px rgba(209, 65, 10, 0.1);
}

button {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    background: var(--accent);
    color: #fff;
    border: 1px solid var(--accent);
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

button:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 12px rgba(0, 82, 204, 0.2);
}

button:active {
    transform: scale(0.98);
}

button.compact {
    width: auto;
    padding: 8px 16px;
    font-size: 14px;
}

button.cart-add {
    width: auto;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 600;
    margin-top: 12px;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

@media (max-width: 720px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

.search-section {
    margin-bottom: 24px;
}

.search-row {
    display: grid;
    grid-template-columns: 1fr 200px;
    gap: 12px;
    margin-bottom: 8px;
}

@media (max-width: 720px) {
    .search-row {
        grid-template-columns: 1fr;
    }
}

.search-info {
    font-size: 14px;
    color: var(--text-light);
    margin-top: 8px;
}

.search-warning {
    background: var(--warning-bg);
    border: 1px solid var(--warning);
    color: var(--warning);
    padding: 10px 12px;
    border-radius: 6px;
    font-size: 14px;
    margin-top: 8px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

@media (max-width: 1400px) {
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    }
}

@media (max-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 720px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
}

.product {
    border: 1px solid var(--border-light);
    border-radius: 12px;
    overflow: hidden;
    background: var(--product-card-bg);
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s, transform 0.2s;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.product:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.product-image {
    width: 100%;
    height: 180px;
    background: var(--product-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--text-light);
    border-bottom: 1px solid var(--border-light);
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-content {
    padding: 16px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-title {
    margin: 0 0 8px 0;
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.3;
}

.product-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 8px;
}

.badge {
    display: inline-block;
    padding: 3px 8px;
    background: var(--accent-light);
    border: 1px solid #99c3eb;
    border-radius: 16px;
    font-size: 11px;
    font-weight: 600;
    color: var(--accent);
    white-space: nowrap;
}

.product-description {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 8px;
    line-height: 1.4;
    flex-grow: 1;
}

.product-numbers {
    font-size: 14px;
    color: var(--text-light);
    word-break: break-word;
    line-height: 1.3;
}

.product-numbers strong {
    color: var(--text);
    font-size: 11px;
}

.product-price-section {
    border-top: 1px solid var(--border-light);
    margin-top: 10px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.product-price-left {
    flex: 1;
}

.product-price {
    font-size: 26px;
    font-weight: 700;
    color: var(--accent);
    margin-top: 10px;
}

.product-price-right {
    font-size: 11px;
    color: var(--text-light);
    line-height: 1.4;
    text-align: right;
    white-space: nowrap;
}

.product-price-right div {
    display: block;
}

.err {
    background: var(--error-bg);
    border: 1px solid var(--error);
    padding: 12px 16px;
    margin-bottom: 16px;
    border-radius: 8px;
    color: var(--error);
    white-space: pre-line;
}

.err strong {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.err ul {
    margin: 0;
    padding-left: 20px;
}

.err li {
    margin-bottom: 4px;
}

.field-error {
    background: var(--error-bg);
    border: 1px solid var(--error);
    color: var(--error);
    padding: 6px 8px;
    border-radius: 4px;
    font-size: 12px;
    margin-top: 4px;
    display: none;
}

.field-error.show {
    display: block;
}

.success {
    background: var(--success-bg);
    border: 1px solid var(--success);
    padding: 12px 16px;
    margin-bottom: 16px;
    border-radius: 8px;
    color: var(--success);
}

.success strong {
    display: block;
    margin-bottom: 4px;
}

label {
    display: block;
    margin-top: 12px;
    margin-bottom: 6px;
    font-weight: 600;
    color: var(--text);
    font-size: 14px;
}

.form-group {
    margin-bottom: 16px;
}

.form-section {
    margin-bottom: 24px;
    padding-bottom: 24px;
}

.form-section:last-of-type {
    margin-bottom: 0;
    padding-bottom: 0;
}

.form-group.hidden {
    display: none;
}

.cart-item {
    background: var(--accent-light);
    border: 1px solid #99c3eb;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.cart-item-info {
    flex: 1;
}

.cart-item-title {
    font-weight: 600;
    color: var(--text);
    margin-bottom: 2px;
    font-size: 14px;
}

.cart-item-details {
    font-size: 12px;
    color: var(--text-light);
}

.cart-item-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.cart-qty-input {
    width: 50px;
    padding: 6px;
    font-size: 14px;
    text-align: center;
    border: 1px solid #99c3eb;
    border-radius: 4px;
    background: #fff;
}

.cart-qty-btn {
    padding: 4px 8px;
    font-size: 12px;
    width: auto;
    background: #fff;
    color: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
}

.cart-qty-btn:hover {
    background: var(--accent-light);
}

.cart-item-price {
    font-weight: 700;
    color: var(--accent);
    white-space: nowrap;
    font-size: 16px;
    min-width: 60px;
    text-align: right;
}

.cart-remove {
    background: #fff;
    color: var(--error);
    border-color: var(--error);
    padding: 4px 8px;
    font-size: 12px;
    cursor: pointer;
    border-radius: 4px;
    width: auto;
}

.cart-remove:hover {
    background: var(--error-bg);
}

.order-summary {
    background: var(--accent-light);
    border: 1px solid #99c3eb;
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 16px;
    font-size: 14px;
}

.order-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
    margin-top: 12px;
    padding-top: 12px;
}

.order-total-label {
    font-size: 16px;
}

.order-total-amount {
    font-size: 22px;
}

.no-results {
    text-align: center;
    padding: 32px 16px;
    color: var(--text-light);
}

.no-results p {
    margin: 0;
}

footer {
    background: #1a1f35;
    color: #fff;
    margin-top: 40px;
}

footer .container {
    padding: 24px 16px;
}

.footer-cols a {
    color: #9fb3d5;
    text-decoration: none;
}

.footer-cols a:hover {
    text-decoration: underline;
}

.empty-cart {
    text-align: center;
    padding: 20px;
    color: var(--text-light);
    background: var(--accent-light);
    border-radius: 8px;
    border: 1px solid #99c3eb;
}

.empty-cart p {
    margin: 0;
}

/* Management pages (manage-products.php, manage-orders.php) */

.manage-body {
    margin: 0;
    font: 16px/1.45 -apple-system, BlinkMacSystemFont, 'Segoe UI',
        Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

.manage-wrap {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 20px 16px 40px;
}

.manage-wrap h1 {
    margin-bottom: 20px;
}

.manage-grid {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 16px;
    align-items: start;
}

.manage-grid-orders {
    grid-template-columns: 420px 1fr;
}

@media (max-width: 1100px) {
    .manage-grid,
    .manage-grid-orders {
        grid-template-columns: 1fr;
    }
}

.manage-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
}

.manage-new-product {
    background: var(--accent-light);
    border: 1px solid #99c3eb;
}

.manage-form label {
    margin-top: 12px;
    margin-bottom: 6px;
}

.manage-form label:first-child {
    margin-top: 0;
}

.manage-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 16px;
}

.manage-form-span {
    grid-column: 1 / -1;
}

@media (max-width: 720px) {
    .manage-form-grid {
        grid-template-columns: 1fr;
    }
}

.manage-btn {
    width: auto;
    padding: 10px 20px;
    margin-top: 16px;
    background: var(--accent);
    color: #fff;
    border: 1px solid var(--accent);
    border-radius: 6px;
    font-weight: 700;
    cursor: pointer;
}

.manage-btn:hover {
    background: var(--accent-hover);
}

.manage-list-item {
    margin: 0 0 10px 0;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-light);
}

.manage-list-item a {
    color: var(--accent);
    font-weight: 600;
    text-decoration: none;
}

.manage-list-item a:hover {
    text-decoration: underline;
}

.manage-file-list {
    margin: 0;
    padding-left: 20px;
}

.manage-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 16px;
}

.manage-table th,
.manage-table td {
    border: 1px solid var(--border);
    padding: 8px 10px;
    text-align: left;
}

.manage-table th {
    background: var(--bg);
}

.ok {
    background: var(--success-bg);
    border: 1px solid var(--success);
    color: var(--success);
    padding: 10px 12px;
    border-radius: 6px;
    margin-bottom: 16px;
}

pre {
    white-space: pre-wrap;
    word-break: break-word;
}