:root {
    --primary-color: #2c3e50;
    --secondary-color: #18bc9c;
    --bg-color: #f8f9fa;
    --border-color: #dee2e6;
    --text-color: #333;
    --muted-color: #6c757d;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --success-color: #27ae60;
    --info-color: #2980b9;
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
}

a {
    color: var(--primary-color);
    font-weight: 700;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 15px;
    margin-bottom: 20px;
}

.app-title {
    color: var(--primary-color);
    display: inline-block;
    font-size: 24px;
    font-weight: 700;
    line-height: 1.2;
}

.app-title span {
    color: var(--danger-color);
    font-size: 14px;
}

.user-info {
    color: var(--text-color);
    font-size: 14px;
    text-align: right;
}

.danger-link {
    color: var(--danger-color);
}

h1 {
    color: var(--primary-color);
    font-size: 24px;
    margin: 0 0 16px;
}

h2 {
    color: var(--primary-color);
    font-size: 18px;
    margin: 0 0 12px;
}

.page-heading {
    align-items: center;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 16px;
}

.muted {
    color: var(--muted-color);
    font-size: 13px;
}

.filters-global {
    align-items: end;
    background: #f1f3f5;
    border-radius: 6px;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 20px;
    padding: 15px;
    font-size: 14px;
}

.field {
    display: grid;
    gap: 5px;
}

.form-grid {
    display: grid;
    gap: 14px 18px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form-row {
    display: grid;
    gap: 5px;
}

.form-row-wide {
    grid-column: 1 / -1;
}

.form-row div {
    display: grid;
    gap: 5px;
}

.form-row .help-text,
.form-row .form-text {
    color: var(--muted-color);
    font-size: 12px;
}

label {
    color: var(--primary-color);
    font-size: 13px;
    font-weight: 700;
}

select,
textarea,
input[type="email"],
input[type="password"],
input[type="text"],
input[type="number"] {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font: inherit;
    padding: 6px 10px;
}

textarea {
    min-height: 82px;
    resize: vertical;
}

.checkbox-field {
    align-items: center;
    display: flex;
    gap: 6px;
    min-height: 33px;
}

.btn {
    background: #e2e6ea;
    border: 0;
    border-radius: 4px;
    color: var(--text-color);
    cursor: pointer;
    display: inline-block;
    font-weight: 700;
    padding: 7px 12px;
    text-align: center;
}

.btn-primary {
    background: var(--secondary-color);
    color: #fff;
}

.btn-secondary {
    background: var(--primary-color);
    color: #fff;
}

.btn-success {
    background: var(--success-color);
    color: #fff;
}

.btn-small {
    padding: 5px 9px;
}

.table-responsive {
    margin-bottom: 20px;
    overflow-x: auto;
}

table {
    border-collapse: collapse;
    font-size: 13px;
    text-align: left;
    width: 100%;
}

th {
    background-color: var(--primary-color);
    color: #fff;
    font-weight: 600;
    padding: 10px;
    vertical-align: bottom;
    white-space: nowrap;
}

td {
    border-bottom: 1px solid var(--border-color);
    padding: 10px;
    vertical-align: middle;
}

tr:hover {
    background-color: #f8f9fa;
}

.channel-header {
    background-color: var(--info-color);
}

.price-value {
    align-items: center;
    display: flex;
    gap: 5px;
    white-space: nowrap;
}

.price-value strong,
.minimum-price {
    color: var(--danger-color);
    font-weight: 700;
}

.currency-label {
    color: #666;
    font-size: 11px;
    font-weight: 700;
}

.badge {
    border-radius: 12px;
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
}

.badge-success {
    background: #d4edda;
    color: #155724;
}

.badge-danger {
    background: #f8d7da;
    color: #721c24;
}

.badge-warning {
    background: #fff3cd;
    color: #856404;
}

.badge-info {
    background: #d1ecf1;
    color: #0c5460;
}

.error-text {
    color: var(--danger-color);
    display: inline-block;
    font-size: 12px;
    margin-top: 4px;
    max-width: 260px;
}

.missing-sku {
    color: var(--danger-color);
    font-weight: 700;
    text-decoration: underline;
}

.footer-actions {
    align-items: center;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-top: 20px;
    padding-top: 15px;
}

.settings-layout {
    display: grid;
    gap: 20px;
    grid-template-columns: minmax(0, 1fr) 360px;
}

.settings-panel,
.settings-notes {
    background: #f8f9fa;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 16px;
}

.settings-notes ul {
    margin: 0 0 18px;
    padding-left: 18px;
}

.settings-notes li {
    margin-bottom: 8px;
}

.inline-action {
    margin: 0;
}

.price-send-now-form {
    margin-top: 8px;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.55;
}

@media (max-width: 900px) {
    .app-header,
    .page-heading,
    .footer-actions {
        align-items: flex-start;
        flex-direction: column;
    }

    .user-info {
        text-align: left;
    }

    .settings-layout,
    .form-grid {
        grid-template-columns: 1fr;
    }
}

.status-bar {
    background: #e9ecef;
    border-left: 5px solid var(--warning-color);
    border-radius: 6px;
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-top: 20px;
    padding: 12px;
    font-size: 12px;
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.detail-box,
.nested-box {
    background: #f4fbf9;
    border: 1px dashed var(--secondary-color);
    border-radius: 4px;
    padding: 15px;
}

.detail-label {
    color: var(--muted-color);
    display: block;
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 4px;
}

.price-form {
    display: grid;
    gap: 8px;
    min-width: 220px;
}

.price-form .form-row {
    display: grid;
    gap: 4px;
}

.flash {
    border-radius: 6px;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 15px;
    padding: 10px 12px;
}

.flash-success {
    background: #d4edda;
    color: #155724;
}

.flash-error {
    background: #f8d7da;
    color: #721c24;
}

.empty-state {
    background: #f1f3f5;
    border-radius: 6px;
    color: var(--muted-color);
    padding: 24px;
    text-align: center;
}

.form-page {
    max-width: 520px;
}

.form-page form,
.form-panel {
    display: grid;
    gap: 12px;
}

@media (max-width: 760px) {
    body {
        padding: 10px;
    }

    .app-header,
    .footer-actions,
    .status-bar {
        align-items: flex-start;
        flex-direction: column;
    }

    .user-info {
        text-align: left;
    }
}