/* ── Bundled Fonts ── */
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 400; font-display: swap; src: url('fonts/inter-400.woff2') format('woff2'); }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 500; font-display: swap; src: url('fonts/inter-500.woff2') format('woff2'); }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 600; font-display: swap; src: url('fonts/inter-600.woff2') format('woff2'); }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 700; font-display: swap; src: url('fonts/inter-700.woff2') format('woff2'); }
@font-face { font-family: 'JetBrains Mono'; font-style: normal; font-weight: 400; font-display: swap; src: url('fonts/jetbrainsmono-400.woff2') format('woff2'); }
@font-face { font-family: 'JetBrains Mono'; font-style: normal; font-weight: 500; font-display: swap; src: url('fonts/jetbrainsmono-500.woff2') format('woff2'); }

:root {
    --bg-0: #09090b;
    --bg-1: #111113;
    --bg-2: #18181b;
    --bg-3: #1f1f23;
    --bg-hover: #27272a;
    --accent: #3b82f6;
    --accent-dim: rgba(59, 130, 246, 0.12);
    --rx: #22d3ee;
    --rx-dim: rgba(34, 211, 238, 0.10);
    --tx: #a78bfa;
    --tx-dim: rgba(167, 139, 250, 0.10);
    --text-0: #fafafa;
    --text-1: #a1a1aa;
    --text-2: #71717a;
    --border: #27272a;
    --danger: #ef4444;
    --success: #22c55e;
    --warning: #eab308;
    --radius: 8px;
}

/* ── Light theme (explicit) ── */
[data-theme="light"] {
    --bg-0: #fafafa; --bg-1: #ffffff; --bg-2: #f4f4f5; --bg-3: #e4e4e7;
    --bg-hover: #e4e4e7;
    --accent: #2563eb; --accent-dim: rgba(37,99,235,0.10);
    --rx: #0891b2; --rx-dim: rgba(8,145,178,0.08);
    --tx: #7c3aed; --tx-dim: rgba(124,58,237,0.08);
    --text-0: #18181b; --text-1: #52525b; --text-2: #71717a;
    --border: #d4d4d8;
    --danger: #dc2626; --success: #16a34a; --warning: #ca8a04;
}
/* ── Light theme (system auto) ── */
@media (prefers-color-scheme: light) {
    [data-theme="auto"] {
        --bg-0: #fafafa; --bg-1: #ffffff; --bg-2: #f4f4f5; --bg-3: #e4e4e7;
        --bg-hover: #e4e4e7;
        --accent: #2563eb; --accent-dim: rgba(37,99,235,0.10);
        --rx: #0891b2; --rx-dim: rgba(8,145,178,0.08);
        --tx: #7c3aed; --tx-dim: rgba(124,58,237,0.08);
        --text-0: #18181b; --text-1: #52525b; --text-2: #71717a;
        --border: #d4d4d8;
        --danger: #dc2626; --success: #16a34a; --warning: #ca8a04;
    }
}

/* ── Theme toggle ── */
.theme-toggle {
    display: flex; align-items: center; gap: 2px;
    background: var(--bg-2); border: 1px solid var(--border);
    border-radius: 6px; padding: 2px;
}
.theme-btn {
    display: flex; align-items: center; justify-content: center;
    width: 28px; height: 24px; border: none; border-radius: 4px;
    background: transparent; color: var(--text-2); cursor: pointer;
    transition: all 0.15s;
}
.theme-btn:hover { color: var(--text-0); background: var(--bg-hover); }
.theme-btn.active { background: var(--bg-3); color: var(--text-0); }
.theme-btn svg { width: 14px; height: 14px; }

/* ── Main navigation tabs ── */
.main-nav {\n    display: flex; gap: 4px; margin-bottom: 20px;\n    overflow-x: auto; -webkit-overflow-scrolling: touch;\n    scrollbar-width: none;\n}
.main-nav-tab {
    padding: 6px 16px; border-radius: 6px; font-size: 13px; font-weight: 500;
    cursor: pointer; color: var(--text-2); background: transparent;
    border: 1px solid transparent; transition: all 0.15s;
    font-family: 'Inter', sans-serif;
}
.main-nav-tab:hover { color: var(--text-0); background: var(--bg-2); }
.main-nav-tab.active {
    background: var(--accent-dim); color: var(--accent);
    border-color: rgba(59,130,246,0.15);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    background: var(--bg-0);
    color: var(--text-0);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1920px;
    margin: 0 auto;
    padding: 20px 24px;
}

/* ── Header ── */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.header h1 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-0);
    letter-spacing: -0.01em;
}

.header h1 span {
    color: var(--text-2);
    font-weight: 400;
    margin-left: 6px;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-2);
}

.status-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--success);
}

.status-dot.error { background: var(--danger); }

/* ── Stats row ── */
.stats-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.stats-group {
    flex: 1;
    min-width: 200px;
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.stats-group-header {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-2);
    padding: 10px 16px 0;
}

.stats-group-header span {
    font-weight: 400;
    color: var(--text-2);
    margin-left: 4px;
}

.stats-group-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    padding: 10px 16px 12px;
}

.stat-mini-label {
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-2);
    margin-bottom: 2px;
}

.stat-mini-value {
    font-size: 16px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
}

.stat-mini-value.rx { color: var(--rx); }
.stat-mini-value.tx { color: var(--tx); }

.stat-value {
    font-size: 22px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
    color: var(--text-0);
}

.stat-value.rx { color: var(--rx); }
.stat-value.tx { color: var(--tx); }

/* ── Cards ── */
.card {
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
}

.chart-section {
    overflow: hidden;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
}

.card-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-0);
}

.card-subtitle {
    font-size: 11px;
    color: var(--text-2);
    margin-top: 1px;
}

.card-body {
    padding: 16px 20px;
}

/* ── Chart ── */
.chart-section { margin-bottom: 20px; }

.chart-container {
    height: 260px;
    padding: 16px 20px 12px;
    overflow: hidden;
}

/* ── Interface tabs ── */
.iface-tabs {
    display: flex;
    gap: 4px;
}

.iface-tab {
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    color: var(--text-2);
    background: transparent;
    border: none;
    transition: all 0.15s;
}

.iface-tab:hover { color: var(--text-0); background: var(--bg-3); }

.iface-tab.active {
    background: var(--accent-dim);
    color: var(--accent);
}

/* ── Interface groups ── */
.iface-groups { margin-bottom: 20px; }

/* ── Interface cards — single flowing grid ── */
.iface-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 12px;
}

.iface-card {
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
}

.iface-name {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-0);
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.iface-group-badge {
    font-family: 'Inter', sans-serif;
    font-size: 9px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 2px 6px;
    border-radius: 3px;
    background: var(--bg-3);
    color: var(--text-2);
    flex-shrink: 0;
}

.iface-status {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-family: 'Inter', sans-serif;
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.iface-status-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
}

.iface-status-dot.up { background: var(--success); }
.iface-status-dot.down { background: var(--danger); }
.iface-status-dot.unknown { background: var(--text-2); }

.vpn-routing {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-family: 'Inter', sans-serif;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 2px 8px;
    border-radius: 4px;
    margin-top: -10px;
    margin-bottom: 10px;
}

.vpn-routing.active {
    background: rgba(34, 197, 94, 0.12);
    color: var(--success);
}

.vpn-routing.inactive {
    background: rgba(113, 113, 122, 0.12);
    color: var(--text-2);
}

.iface-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.iface-stat-label {
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-2);
    margin-bottom: 2px;
}

.iface-stat-value {
    font-size: 14px;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    color: var(--text-0);
}

.label-rx { color: var(--rx); }
.label-tx { color: var(--tx); }
.label-err { color: var(--danger); }

/* ── Interface addresses ── */
.iface-addrs {
    margin-top: 12px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.iface-addr-row {
    display: flex;
    align-items: baseline;
    gap: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    line-height: 1.5;
    color: var(--text-2);
}
.iface-addr-tag {
    font-family: 'Inter', sans-serif;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 1px 5px;
    border-radius: 3px;
    flex-shrink: 0;
}
.iface-addr-tag.v4 {
    background: rgba(96, 165, 250, 0.12);
    color: #60a5fa;
}
.iface-addr-tag.v6 {
    background: rgba(168, 85, 247, 0.12);
    color: #a855f7;
}
.iface-addr-list {
    word-break: break-all;
}

/* ── Sparklines ── */
.sparkline-wrap {
    margin-bottom: 12px;
    height: 36px;
    border-radius: 4px;
    overflow: hidden;
    background: var(--bg-2);
}
.sparkline-canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* ── Two-column layout ── */
.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

/* ── Four-column layout for breakdown charts ── */
.breakdown-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 12px;
    margin-bottom: 20px;
}

.breakdown-card {
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.breakdown-chart-body {
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.breakdown-chart-wrap {
    width: 120px;
    height: 120px;
    flex-shrink: 0;
}

.breakdown-legend {
    width: 100%;
}

.breakdown-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 16px;
    border-top: 1px solid var(--border);
    cursor: pointer;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-2);
    transition: all 0.15s;
    user-select: none;
}

.breakdown-toggle:hover {
    color: var(--text-0);
    background: var(--bg-2);
}

.breakdown-toggle svg {
    width: 12px;
    height: 12px;
    transition: transform 0.2s;
}

.breakdown-toggle.open svg {
    transform: rotate(180deg);
}

.breakdown-detail {
    display: none;
    border-top: 1px solid var(--border);
    max-height: 320px;
    overflow-y: auto;
    overflow-x: auto;
}

.breakdown-detail.open {
    display: block;
}

@media (max-width: 1200px) {
    .breakdown-row { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 700px) {
    .breakdown-row { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
    .two-col { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── Tables ── */
table { width: 100%; border-collapse: collapse; }

thead th {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-2);
    padding: 10px 16px;
    text-align: left;
    background: var(--bg-2);
}

tbody td {
    padding: 10px 16px;
    font-size: 13px;
    border-top: 1px solid var(--border);
    font-variant-numeric: tabular-nums;
}

tbody tr:hover { background: var(--bg-2); }

.rank {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px; height: 22px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    background: var(--bg-3);
    color: var(--text-2);
}

.rank-1 { background: var(--accent-dim); color: var(--accent); }

.ip-cell {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--text-0);
}

.hostname {
    color: var(--text-2);
    font-size: 11px;
    display: block;
    margin-top: 1px;
}

.bar-cell {
    position: relative;
    min-width: 100px;
}

.bar-bg {
    position: absolute;
    top: 50%; left: 0;
    transform: translateY(-50%);
    height: 4px;
    border-radius: 2px;
    background: var(--bg-3);
    width: 100%;
}

.bar-fill {
    position: absolute;
    top: 50%; left: 0;
    transform: translateY(-50%);
    height: 4px;
    border-radius: 2px;
    transition: width 0.4s ease;
}

.bar-fill.bw { background: var(--rx); }
.bar-fill.vol { background: var(--tx); }

.empty-state {
    text-align: center;
    padding: 32px 16px;
    color: var(--text-2);
    font-size: 13px;
}

.footer {
    text-align: center;
    padding: 24px 0 12px;
    color: var(--text-2);
    font-size: 11px;
}

/* ── DNS Section ── */
.dns-section { margin-bottom: 20px; }

.dns-stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.dns-stat-card {
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 18px;
}

.dns-stat-label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-2);
    margin-bottom: 4px;
}

.dns-stat-value {
    font-size: 22px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
    color: var(--text-0);
}

.dns-stat-value.blocked { color: var(--danger); }
.dns-stat-value.pct { color: var(--warning); }
.dns-stat-value.latency { color: var(--rx); }

.dns-chart-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 16px;
}

.dns-chart-card {
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.dns-chart-wrap {
    height: 80px;
    padding: 8px 12px;
}

@media (max-width: 900px) {
    .dns-stats-row { grid-template-columns: repeat(2, 1fr); }
    .dns-chart-row { grid-template-columns: 1fr; }
}

canvas { outline: none; }

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 3px; }

/* ── VPN routing banner ── */
.vpn-banner {
    display: none;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-size: 13px;
    font-weight: 500;
}

.vpn-banner.active {
    display: flex;
    background: rgba(34, 197, 94, 0.08);
    border: 1px solid rgba(34, 197, 94, 0.25);
    color: var(--success);
}

.vpn-banner.inactive {
    display: none;
}

.vpn-banner-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--success);
    flex-shrink: 0;
    animation: vpn-pulse 2s infinite;
}

@keyframes vpn-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4); }
    50% { box-shadow: 0 0 0 4px rgba(34, 197, 94, 0); }
}

.vpn-banner-text {
    flex: 1;
}

.vpn-banner-since {
    font-size: 11px;
    color: var(--text-2);
    font-weight: 400;
}

/* ── WiFi Section ── */
.wifi-stats-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.wifi-stat-card {
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 18px;
}

.wifi-stat-label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-2);
    margin-bottom: 4px;
}

.wifi-stat-value {
    font-size: 22px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
    color: var(--text-0);
}

.wifi-stat-value.ap { color: var(--accent); }
.wifi-stat-value.clients { color: var(--rx); }
.wifi-stat-value.ssids { color: var(--tx); }

.wifi-stat-value.net-nodes { color: var(--text-0); }
.wifi-stat-value.net-gw { color: var(--accent); font-size: 15px; }
.wifi-stat-value.net-aps { color: #34d399; }
.wifi-stat-value.net-clients { color: var(--rx); }
.wifi-stat-value.net-sources { color: var(--text-1); }

/* Signal strength badges */
.signal-badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    font-variant-numeric: tabular-nums;
    padding: 2px 7px;
    border-radius: 4px;
    white-space: nowrap;
}
.signal-badge.sig-great { background: rgba(34,197,94,0.15); color: #22c55e; }
.signal-badge.sig-good  { background: rgba(59,130,246,0.15); color: #3b82f6; }
.signal-badge.sig-ok    { background: rgba(234,179,8,0.15);  color: #eab308; }
.signal-badge.sig-weak  { background: rgba(239,68,68,0.15);  color: #ef4444; }

.wifi-ap-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.wifi-ap-card {
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
}

.wifi-ap-name {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-0);
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.wifi-ap-model {
    font-family: 'Inter', sans-serif;
    font-size: 9px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 2px 6px;
    border-radius: 3px;
    background: var(--accent-dim);
    color: var(--accent);
    flex-shrink: 0;
}

.wifi-ap-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.wifi-ap-stat-label {
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-2);
    margin-bottom: 2px;
}

.wifi-ap-stat-value {
    font-size: 14px;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    color: var(--text-0);
}

.wifi-ssid-table th.ssid-bar-col { width: 28%; }

@media (max-width: 900px) {
    .wifi-stats-row { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
}

/* ── NAT / Conntrack Section ── */
.nat-stats-row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.nat-stat-card {
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 18px;
}

.nat-stat-label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-2);
    margin-bottom: 4px;
}

.nat-stat-value {
    font-size: 22px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
    color: var(--text-0);
}

.nat-stat-value.total { color: var(--accent); }
.nat-stat-value.max { color: var(--text-0); }
.nat-stat-value.pct { color: var(--warning); }
.nat-stat-value.v4 { color: #60a5fa; }
.nat-stat-value.v6 { color: #a855f7; }

.nat-version-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 12px;
}

.nat-version-tab {
    padding: 6px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    color: var(--text-2);
    background: transparent;
    border: 1px solid transparent;
    transition: all 0.15s;
    font-family: 'Inter', sans-serif;
}

.nat-version-tab:hover { color: var(--text-0); background: var(--bg-2); }

.nat-version-tab.active {
    background: var(--accent-dim);
    color: var(--accent);
    border-color: rgba(59,130,246,0.15);
}

.toggle-group {
    display: flex;
    gap: 2px;
    background: var(--bg-2);
    border-radius: 6px;
    padding: 2px;
}

.toggle-btn {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    color: var(--text-2);
    background: transparent;
    border: none;
    transition: all 0.15s;
    font-family: 'Inter', sans-serif;
}

.toggle-btn:hover { color: var(--text-0); }

.toggle-btn.active {
    background: var(--card);
    color: var(--text-0);
    box-shadow: 0 1px 2px rgba(0,0,0,0.08);
}

.nat-badge {
    display: inline-block;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 2px 7px;
    border-radius: 4px;
    white-space: nowrap;
}

.nat-badge.snat { background: rgba(34,211,238,0.15); color: #22d3ee; }
.nat-badge.dnat { background: rgba(167,139,250,0.15); color: #a78bfa; }
.nat-badge.both { background: rgba(251,146,60,0.15); color: #fb923c; }
.nat-badge.none { background: rgba(113,113,122,0.12); color: var(--text-2); }

.nat-state-badge {
    display: inline-block;
    font-size: 10px;
    font-weight: 600;
    padding: 2px 7px;
    border-radius: 4px;
    white-space: nowrap;
}

.nat-state-badge.established { background: rgba(34,197,94,0.15); color: #22c55e; }
.nat-state-badge.time-wait { background: rgba(234,179,8,0.15); color: #eab308; }
.nat-state-badge.syn-sent { background: rgba(59,130,246,0.15); color: #3b82f6; }
.nat-state-badge.close-wait { background: rgba(239,68,68,0.15); color: #ef4444; }
.nat-state-badge.other { background: rgba(113,113,122,0.12); color: var(--text-2); }

@media (max-width: 1200px) {
    .nat-stats-row { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 700px) {
    .nat-stats-row { grid-template-columns: repeat(2, 1fr); }
}

/* ── Speed Test Section ── */
.speedtest-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    color: #fff;
    background: var(--accent);
    border: none;
    transition: all 0.15s;
    font-family: 'Inter', sans-serif;
}
.speedtest-btn:hover { opacity: 0.9; }
.speedtest-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.speedtest-status {
    font-size: 12px;
    color: var(--text-2);
    font-variant-numeric: tabular-nums;
}

.speedtest-gauges {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.speedtest-gauge-card {
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 16px 16px;
    text-align: center;
}

.speedtest-gauge-label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-2);
    margin-bottom: 8px;
}

.speedtest-gauge-wrap {
    width: 100%;
    max-width: 160px;
    height: 80px;
    margin: 0 auto 8px;
}

.speedtest-gauge-wrap canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.speedtest-gauge-value {
    font-size: 28px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
    color: var(--text-0);
    line-height: 1;
}

.speedtest-gauge-unit {
    font-size: 11px;
    color: var(--text-2);
    margin-top: 2px;
}

.speedtest-progress-wrap {
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
    margin-bottom: 16px;
}

.speedtest-progress-phase {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-0);
    margin-bottom: 10px;
}

.speedtest-progress-bar-bg {
    height: 6px;
    border-radius: 3px;
    background: var(--bg-3);
    overflow: hidden;
}

.speedtest-progress-bar-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.4s ease;
    background: var(--accent);
}

.speedtest-progress-bar-fill.ping { background: #22d3ee; }
.speedtest-progress-bar-fill.download { background: #3b82f6; }
.speedtest-progress-bar-fill.upload { background: #a78bfa; }
.speedtest-progress-bar-fill.done { background: var(--success); }
.speedtest-progress-bar-fill.error { background: var(--danger); }

.speedtest-spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: st-spin 0.6s linear infinite;
}

@keyframes st-spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 900px) {
    .speedtest-gauges { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 500px) {
    .speedtest-gauges { grid-template-columns: 1fr; }
}

/* ── DNS Check Results ── */
.dns-check-server {
    border-top: 1px solid var(--border);
}

.dns-check-server-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    transition: background 0.15s;
}

.dns-check-server-header:hover {
    background: var(--bg-2);
}

.dns-check-server-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.dns-check-badge {
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 2px 6px;
    border-radius: 3px;
}

.dns-check-badge.dnssec {
    background: rgba(34, 197, 94, 0.12);
    color: var(--success);
}

.dns-check-badge.truncated {
    background: rgba(234, 179, 8, 0.12);
    color: var(--warning);
}

.dns-check-rcode {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.dns-check-latency {
    font-size: 12px;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    font-family: 'JetBrains Mono', monospace;
    min-width: 70px;
    text-align: right;
}

.dns-check-error {
    padding: 4px 20px 8px;
    font-size: 12px;
    color: var(--danger);
}

.dns-check-records {
    padding: 0 20px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.dns-check-record {
    display: grid;
    grid-template-columns: 52px 1fr 50px;
    gap: 8px;
    align-items: baseline;
    padding: 4px 10px;
    border-radius: 4px;
    background: var(--bg-2);
    font-size: 12px;
}

.dns-check-record.unique {
    background: rgba(234, 179, 8, 0.08);
    border: 1px solid rgba(234, 179, 8, 0.2);
}

.dns-check-rec-type {
    font-weight: 600;
    color: var(--accent);
    font-size: 11px;
    text-transform: uppercase;
}

.dns-check-rec-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--text-0);
    word-break: break-all;
    line-height: 1.4;
}

.dns-check-rec-ttl {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--text-2);
    text-align: right;
    font-variant-numeric: tabular-nums;
}

/* Host Detail Modal */
.host-modal-backdrop {
    position: fixed; inset: 0; z-index: 10000;
    background: rgba(0,0,0,0.75); backdrop-filter: blur(8px);
    display: flex; align-items: center; justify-content: center;
    animation: hostFadeIn 0.15s ease;
}
@keyframes hostFadeIn { from { opacity: 0; } to { opacity: 1; } }

.host-modal {
    background: var(--bg-1); border: 1px solid var(--border);
    border-radius: 12px; width: 90%; max-width: 800px;
    max-height: 90vh; box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    animation: hostSlideUp 0.2s ease;
    display: flex; flex-direction: column;
}
@keyframes hostSlideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.host-modal-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 20px 24px; border-bottom: 1px solid var(--border);
}
.host-modal-title { font-size: 18px; font-weight: 700; }
.host-modal-subtitle { font-size: 13px; color: var(--text-2); margin-top: 4px; font-family: var(--font-mono, monospace); }
.host-modal-close {
    background: none; border: none; font-size: 24px; color: var(--text-2);
    cursor: pointer; padding: 4px 8px; border-radius: 6px; line-height: 1;
}
.host-modal-close:hover { background: var(--bg-2); color: var(--text-0); }

.host-modal-stats {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 12px; margin-bottom: 16px;
}
.host-modal-stat-label { font-size: 10px; color: var(--text-2); margin-bottom: 2px; }
.host-modal-stat-value { font-size: 14px; font-weight: 700; font-variant-numeric: tabular-nums; }

.ip-clickable { cursor: pointer; text-decoration: underline; text-decoration-style: dotted; text-underline-offset: 2px; }
.ip-clickable:hover { color: var(--accent); }

/* ── Network Topology Tab ── */
.net-type-badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 2px 8px; border-radius: 10px; font-size: 11px;
    font-weight: 600; text-transform: capitalize;
    background: var(--bg-2); color: var(--text-1);
}
.net-type-gateway { background: rgba(34,211,238,0.12); color: #22d3ee; }
.net-type-router  { background: rgba(96,165,250,0.12); color: #60a5fa; }
.net-type-switch  { background: rgba(167,139,250,0.12); color: #a78bfa; }
.net-type-ap      { background: rgba(52,211,153,0.12); color: #34d399; }
.net-type-self    { background: rgba(251,191,36,0.12); color: #fbbf24; }
.net-type-client  { background: rgba(113,113,122,0.12); color: #a1a1aa; }\n.net-type-wan_gw  { background: rgba(249,115,22,0.12); color: #f97316; }\n.net-type-tunnel  { background: rgba(139,92,246,0.12); color: #8b5cf6; }

#networkTopologySVG {
    background: var(--bg-1); border-radius: 8px;
}