.settings-explain {
    background: #fff;
    border: 1px solid var(--border);
    border-left: 5px solid var(--red);
    border-radius: 18px;
    padding: 18px 20px;
    margin-bottom: 22px;
    box-shadow: 0 8px 24px rgba(15,23,42,.05);
}

.settings-explain strong {
    display: block;
    margin-bottom: 6px;
}

.settings-explain p,
.subtitle {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.45;
}

.settings-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 20px;
    align-items: start;
}

.settings-panel,
.setting-card,
.system-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 22px;
    box-shadow: 0 10px 28px rgba(15,23,42,.06);
}

.settings-panel {
    padding: 22px;
}

.settings-panel h2 {
    margin-bottom: 8px;
}

.settings-menu {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.settings-menu-item {
    padding: 14px;
    border-radius: 16px;
    background: #f8fafc;
    border: 1px solid var(--border);
}

.settings-menu-item.active {
    background: #fff1f2;
    border-color: #fecdd3;
}

.settings-menu-item strong {
    display: block;
    margin-bottom: 5px;
}

.settings-menu-item span {
    color: var(--muted);
    font-size: 13px;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 14px;
    margin-top: 18px;
}

.setting-card {
    padding: 18px;
}

.setting-card strong {
    display: block;
    margin-bottom: 8px;
}

.setting-card p {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.4;
    margin-bottom: 14px;
}

.setting-row,
.user-role-row,
.integration-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

.setting-row:last-child,
.user-role-row:last-child,
.integration-row:last-child {
    border-bottom: none;
}

.setting-row span,
.user-role-row span:first-child,
.integration-row span:first-child {
    color: var(--muted);
}

.status-badge {
    display: inline-flex;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    white-space: nowrap;
}

.status-badge.good {
    background: #dcfce7;
    color: #166534;
}

.status-badge.warn {
    background: #fef3c7;
    color: #92400e;
}

.status-badge.info {
    background: #dbeafe;
    color: #1e40af;
}

.status-badge.bad {
    background: #ffe4e6;
    color: #9f1239;
}

.settings-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 20px;
}

.system-health-grid {
    display: grid;
    grid-template-columns: repeat(5,1fr);
    gap: 14px;
    margin-top: 18px;
}

.system-card {
    padding: 18px;
    background: #f8fafc;
}

.system-card strong {
    display: block;
    margin-bottom: 8px;
}

.system-card p {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.4;
    margin-bottom: 12px;
}

@media (max-width: 1500px) {
    .settings-layout {
        grid-template-columns: 1fr;
    }

    .settings-grid {
        grid-template-columns: repeat(2,1fr);
    }

    .system-health-grid {
        grid-template-columns: repeat(2,1fr);
    }
}

@media (max-width: 900px) {
    .settings-grid,
    .settings-split,
    .system-health-grid {
        grid-template-columns: 1fr;
    }
}