:root {
    --merchant-bg: #f6f8fb;
    --merchant-surface: #ffffff;
    --merchant-surface-soft: #f9fafb;
    --merchant-border: #d9e1ec;
    --merchant-text: #10233f;
    --merchant-text-muted: #61758f;
    --merchant-primary: #1a73e8;
    --merchant-primary-soft: #e8f0fe;
    --merchant-success: #137333;
    --merchant-success-soft: #e6f4ea;
    --merchant-danger: #b3261e;
    --merchant-danger-soft: #fce8e6;
    --merchant-shadow: 0 20px 45px rgba(16, 35, 63, 0.08);
    --merchant-radius: 18px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
    background: linear-gradient(180deg, #f8fbff 0%, #f4f7fb 100%);
    color: var(--merchant-text);
}

a {
    color: inherit;
    text-decoration: none;
}

.merchant-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 240px 1fr;
}

.merchant-sidebar {
    background: linear-gradient(180deg, #ffffff 0%, #f7f9fc 100%);
    border-right: 1px solid var(--merchant-border);
    padding: 32px 20px;
}

.merchant-brand-kicker {
    color: var(--merchant-primary);
    font-size: 12px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.merchant-brand-title {
    font-size: 22px;
    font-weight: 700;
    line-height: 1.4;
}

.merchant-nav {
    margin-top: 36px;
    display: grid;
    gap: 8px;
}

.merchant-nav-link {
    padding: 12px 14px;
    border-radius: 12px;
    color: var(--merchant-text-muted);
}

.merchant-nav-link.is-active,
.merchant-nav-link:hover {
    background: var(--merchant-primary-soft);
    color: var(--merchant-primary);
}

.merchant-main {
    display: flex;
    flex-direction: column;
}

.merchant-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 28px 36px 20px;
}

.merchant-page-title {
    font-size: 28px;
    font-weight: 700;
}

.merchant-page-subtitle,
.merchant-section-subtitle,
.merchant-pagination-summary {
    color: var(--merchant-text-muted);
    font-size: 14px;
}

.merchant-content {
    padding: 0 36px 36px;
}

.merchant-card {
    background: var(--merchant-surface);
    border: 1px solid var(--merchant-border);
    border-radius: var(--merchant-radius);
    box-shadow: var(--merchant-shadow);
    padding: 28px;
}

.merchant-card-narrow {
    max-width: 760px;
}

.merchant-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}

.merchant-section-title {
    margin: 0 0 6px;
    font-size: 24px;
}

.merchant-alert {
    border-radius: 14px;
    padding: 14px 16px;
    margin-bottom: 20px;
}

.merchant-alert-success {
    background: var(--merchant-success-soft);
    color: var(--merchant-success);
}

.merchant-alert-danger {
    background: var(--merchant-danger-soft);
    color: var(--merchant-danger);
}

.merchant-filters,
.merchant-form-grid {
    display: grid;
    gap: 18px;
}

.merchant-filters {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: end;
    margin-bottom: 24px;
}

.merchant-form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.merchant-field {
    display: grid;
    gap: 8px;
}

.merchant-field > span {
    font-size: 14px;
    font-weight: 600;
}

.merchant-input,
.merchant-select {
    width: 100%;
    border: 1px solid var(--merchant-border);
    border-radius: 12px;
    padding: 12px 14px;
    font-size: 14px;
    background: var(--merchant-surface);
    color: var(--merchant-text);
}

.merchant-input:focus,
.merchant-select:focus {
    border-color: var(--merchant-primary);
    outline: none;
    box-shadow: 0 0 0 4px rgba(26, 115, 232, 0.12);
}

.merchant-filter-actions,
.merchant-form-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.merchant-form-actions {
    grid-column: 1 / -1;
    margin-top: 8px;
}

.merchant-btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-height: 42px;
    padding: 0 18px;
    border-radius: 12px;
    border: 1px solid transparent;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

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

.merchant-btn-secondary {
    background: var(--merchant-surface-soft);
    border-color: var(--merchant-border);
    color: var(--merchant-text);
}

.merchant-table-wrap {
    overflow-x: auto;
}

.merchant-table {
    width: 100%;
    border-collapse: collapse;
}

.merchant-table th,
.merchant-table td {
    padding: 16px 14px;
    border-bottom: 1px solid var(--merchant-border);
    text-align: left;
    font-size: 14px;
}

.merchant-table th {
    color: var(--merchant-text-muted);
    font-weight: 600;
    background: var(--merchant-surface-soft);
}

.merchant-text-right {
    text-align: right !important;
}

.merchant-empty {
    text-align: center !important;
    color: var(--merchant-text-muted);
    padding: 40px 16px !important;
}

.merchant-status {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}

.merchant-status.is-online {
    background: var(--merchant-success-soft);
    color: var(--merchant-success);
}

.merchant-status.is-offline {
    background: var(--merchant-danger-soft);
    color: var(--merchant-danger);
}

.merchant-pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-top: 20px;
}

.merchant-pagination-actions {
    display: flex;
    gap: 10px;
}

.merchant-page-link {
    padding: 10px 14px;
    border-radius: 10px;
    border: 1px solid var(--merchant-border);
    background: var(--merchant-surface-soft);
}

.merchant-page-link.is-disabled {
    pointer-events: none;
    opacity: 0.45;
}

.merchant-login-body {
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(26, 115, 232, 0.16), transparent 32%),
        linear-gradient(180deg, #f9fbff 0%, #edf3fb 100%);
}

.merchant-login-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.merchant-login-card {
    width: min(460px, 100%);
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid rgba(217, 225, 236, 0.92);
    border-radius: 28px;
    box-shadow: var(--merchant-shadow);
    padding: 36px;
    backdrop-filter: blur(12px);
}

.merchant-login-kicker {
    color: var(--merchant-primary);
    font-size: 12px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.merchant-login-card h1 {
    margin: 0 0 10px;
    font-size: 30px;
}

.merchant-login-card p {
    margin: 0 0 24px;
    color: var(--merchant-text-muted);
    line-height: 1.7;
}

.merchant-login-form {
    display: grid;
    gap: 18px;
}

.merchant-login-submit {
    width: 100%;
}

.merchant-checkbox {
    display: inline-flex;
    gap: 8px;
    align-items: center;
    color: var(--merchant-text-muted);
    font-size: 14px;
}

.merchant-text-danger {
    color: var(--merchant-danger);
    font-size: 13px;
}

@media (max-width: 960px) {
    .merchant-shell {
        grid-template-columns: 1fr;
    }

    .merchant-sidebar {
        padding-bottom: 8px;
    }

    .merchant-topbar,
    .merchant-content {
        padding-left: 20px;
        padding-right: 20px;
    }

    .merchant-filters,
    .merchant-form-grid {
        grid-template-columns: 1fr;
    }

    .merchant-pagination {
        flex-direction: column;
        align-items: flex-start;
    }
}