/* Токены оформления. Тёмная тема задаётся дважды: по настройке системы и
   по явному выбору пользователя (data-theme), который всегда главнее. */
:root {
  color-scheme: light;
  --bg: #f5f5f2;
  --surface: #ffffff;
  --surface-2: #f1f0ec;
  --surface-3: #e8e7e2;
  --border: rgba(11, 11, 11, 0.09);
  --border-strong: rgba(11, 11, 11, 0.16);
  --text: #0b0b0b;
  --text-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --accent: #2a78d6;
  --accent-hover: #256abf;
  --accent-ink: #ffffff;
  --accent-soft: #e4effc;
  --accent-track: #cde2fb;
  --s1: #2a78d6;
  --s2: #eb6834;
  --s3: #1baf7a;
  --s4: #eda100;
  --good: #0ca30c;
  --warning: #fab219;
  --serious: #ec835a;
  --critical: #d03b3b;
  --good-track: #d9f1d9;
  --warning-track: #fdebc2;
  --serious-track: #fae0d5;
  --critical-track: #f6d5d5;
  --danger-ink: #b42323;
  --success-ink: #006300;
  --shadow: 0 1px 2px rgba(11, 11, 11, 0.04), 0 4px 16px rgba(11, 11, 11, 0.04);
  --shadow-pop: 0 8px 40px rgba(11, 11, 11, 0.18);
  --radius: 14px;
  --radius-sm: 9px;
  --sidebar: 248px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0d0d0d;
    --surface: #1a1a19;
    --surface-2: #232321;
    --surface-3: #2e2e2b;
    --border: rgba(255, 255, 255, 0.09);
    --border-strong: rgba(255, 255, 255, 0.18);
    --text: #ffffff;
    --text-2: #c3c2b7;
    --muted: #898781;
    --grid: #2c2c2a;
    --axis: #383835;
    --accent: #3987e5;
    --accent-hover: #5598e7;
    --accent-soft: rgba(57, 135, 229, 0.16);
    --accent-track: #173456;
    --s1: #3987e5;
    --s2: #d95926;
    --s3: #199e70;
    --s4: #c98500;
    --good-track: #133a13;
    --warning-track: #4a370d;
    --serious-track: #472a1f;
    --critical-track: #451a1a;
    --danger-ink: #f08a8a;
    --success-ink: #0ca30c;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-pop: 0 12px 48px rgba(0, 0, 0, 0.6);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0d0d0d;
  --surface: #1a1a19;
  --surface-2: #232321;
  --surface-3: #2e2e2b;
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.18);
  --text: #ffffff;
  --text-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --axis: #383835;
  --accent: #3987e5;
  --accent-hover: #5598e7;
  --accent-soft: rgba(57, 135, 229, 0.16);
  --accent-track: #173456;
  --s1: #3987e5;
  --s2: #d95926;
  --s3: #199e70;
  --s4: #c98500;
  --good-track: #133a13;
  --warning-track: #4a370d;
  --serious-track: #472a1f;
  --critical-track: #451a1a;
  --danger-ink: #f08a8a;
  --success-ink: #0ca30c;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-pop: 0 12px 48px rgba(0, 0, 0, 0.6);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 var(--font);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3, p { margin: 0; }
svg { display: block; }
.mono { font-family: var(--mono); font-size: 13px; letter-spacing: -0.01em; }
.muted { color: var(--muted); }
.secondary { color: var(--text-2); }
.num { font-variant-numeric: tabular-nums; }
.grow { flex: 1; min-width: 0; }
.row { display: flex; align-items: center; gap: 10px; }
.wrap { flex-wrap: wrap; }
.hidden { display: none !important; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }

/* --- каркас --- */
.shell { display: grid; grid-template-columns: var(--sidebar) 1fr; min-height: 100vh; }
.sidebar {
  position: sticky; top: 0; height: 100vh;
  display: flex; flex-direction: column; gap: 4px;
  padding: 18px 12px 12px;
  background: var(--surface);
  border-right: 1px solid var(--border);
}
.nav { display: flex; flex-direction: column; gap: 4px; }
.menu-toggle { display: none; }
.brand { display: flex; align-items: center; gap: 11px; padding: 4px 10px 18px; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 10px; flex: none;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(140deg, #3987e5, #184f95);
  box-shadow: 0 4px 14px rgba(42, 120, 214, 0.35);
}
.brand-name { font-weight: 650; font-size: 15px; letter-spacing: -0.01em; }
.brand-sub { font-size: 11.5px; color: var(--muted); }
.nav-title {
  padding: 14px 12px 6px; font-size: 11px; font-weight: 600;
  letter-spacing: 0.07em; text-transform: uppercase; color: var(--muted);
}
.nav-item {
  display: flex; align-items: center; gap: 11px;
  padding: 8px 12px; border-radius: var(--radius-sm);
  color: var(--text-2); font-weight: 500;
  transition: background 0.12s, color 0.12s;
}
.nav-item svg { width: 18px; height: 18px; flex: none; opacity: 0.85; }
.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item.active { background: var(--accent-soft); color: var(--accent); }
.nav-item.active svg { opacity: 1; }
.sidebar-foot { margin-top: auto; padding-top: 10px; border-top: 1px solid var(--border); }
.user-chip { display: flex; align-items: center; gap: 10px; padding: 8px; border-radius: var(--radius-sm); }
.user-chip:hover { background: var(--surface-2); }
.avatar {
  width: 32px; height: 32px; border-radius: 50%; flex: none;
  display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent);
  font-weight: 650; font-size: 13px;
}
.user-name { font-weight: 600; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-role { font-size: 11.5px; color: var(--muted); }

.main { min-width: 0; display: flex; flex-direction: column; }
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 14px;
  height: 60px; padding: 0 28px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.search {
  position: relative; flex: 1; max-width: 460px;
}
.search svg { position: absolute; z-index: 1; left: 11px; top: 9px; width: 16px; height: 16px; color: var(--muted); pointer-events: none; }
.search input[type="search"] { padding-left: 34px; background: var(--surface); }
.content { padding: 26px 28px 60px; max-width: 1480px; width: 100%; }
.page-head { display: flex; align-items: flex-end; gap: 16px; margin-bottom: 22px; flex-wrap: wrap; }
.page-title { font-size: 24px; font-weight: 650; letter-spacing: -0.02em; }
.page-sub { color: var(--text-2); margin-top: 3px; }
.crumbs { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.crumbs a:hover { color: var(--accent); }
.crumbs .sep { opacity: 0.5; }

/* --- элементы управления --- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  height: 34px; padding: 0 13px;
  border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--text);
  font-weight: 550; font-size: 13.5px; white-space: nowrap; cursor: pointer;
  transition: background 0.12s, border-color 0.12s, transform 0.05s;
}
.btn:hover { background: var(--surface-2); }
.btn:active { transform: translateY(1px); }
.btn svg { width: 15px; height: 15px; }
.btn.primary { background: var(--accent); border-color: transparent; color: var(--accent-ink); }
.btn.primary:hover { background: var(--accent-hover); }
.btn.danger { color: var(--danger-ink); }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.ghost:hover { background: var(--surface-2); }
.btn.icon { width: 34px; padding: 0; }
.btn.sm { height: 28px; padding: 0 9px; font-size: 12.5px; }
.btn.sm.icon { width: 28px; }
.btn:disabled { opacity: 0.5; cursor: default; }

input[type="text"], input[type="password"], input[type="search"], input[type="number"], input[type="email"], input[type="date"], input[type="datetime-local"], input[type="file"], select, textarea {
  width: 100%; height: 34px; padding: 0 11px;
  border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  background: var(--surface); outline: none;
  transition: border-color 0.12s, box-shadow 0.12s;
}
textarea { height: auto; min-height: 72px; padding: 8px 11px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
input::placeholder, textarea::placeholder { color: var(--muted); }
select { appearance: none; padding-right: 28px;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 15px) 14px, calc(100% - 10px) 14px; background-size: 5px 5px; background-repeat: no-repeat; }
.field { display: flex; flex-direction: column; gap: 5px; margin-bottom: 14px; }
.field > label { font-size: 12.5px; font-weight: 600; color: var(--text-2); }
.field .hint { font-size: 12px; color: var(--muted); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.check { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.check input { width: 16px; height: 16px; accent-color: var(--accent); }
.checklist { max-height: 180px; overflow: auto; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 8px 10px; display: grid; gap: 6px; }
.form-error {
  margin-bottom: 14px; padding: 9px 12px; border-radius: var(--radius-sm);
  background: var(--critical-track); color: var(--danger-ink); font-size: 13px;
}

/* --- карточки --- */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.card-head { display: flex; align-items: center; gap: 10px; padding: 16px 18px 0; }
.card-title { font-weight: 620; font-size: 14.5px; letter-spacing: -0.005em; }
.card-sub { font-size: 12.5px; color: var(--muted); margin-top: 1px; }
.card-body { padding: 14px 18px 18px; }
.grid { display: grid; gap: 16px; }
.kpis { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin-bottom: 16px; }
.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cols-3 { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr) minmax(0, 1fr); }
.cols-main { grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); }
@media (max-width: 1180px) { .cols-3, .cols-main, .cols-2 { grid-template-columns: minmax(0, 1fr); } }

.kpi { padding: 16px 18px; display: flex; flex-direction: column; gap: 6px; }
.kpi-label { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--text-2); font-weight: 550; }
.kpi-icon { width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; background: var(--surface-2); color: var(--text-2); }
.kpi-icon svg { width: 14px; height: 14px; }
.kpi-value { font-size: 28px; font-weight: 650; letter-spacing: -0.025em; line-height: 1.15; }
.kpi-foot { font-size: 12.5px; color: var(--muted); display: flex; align-items: center; gap: 6px; min-height: 18px; }
.delta { display: inline-flex; align-items: center; gap: 3px; font-weight: 600; }
.delta.up { color: var(--success-ink); }
.delta.down { color: var(--danger-ink); }
.hero { padding: 20px 22px; display: flex; flex-direction: column; gap: 10px; }
.hero-value { font-size: 52px; font-weight: 650; letter-spacing: -0.035em; line-height: 1; }
.hero-value small { font-size: 24px; font-weight: 600; color: var(--text-2); margin-left: 2px; }

/* --- индикаторы --- */
.meter { height: 7px; border-radius: 4px; background: var(--accent-track); overflow: hidden; min-width: 60px; }
.meter > i { display: block; height: 100%; border-radius: 4px; background: var(--accent); }
.meter.warning { background: var(--warning-track); } .meter.warning > i { background: var(--warning); }
.meter.serious { background: var(--serious-track); } .meter.serious > i { background: var(--serious); }
.meter.critical { background: var(--critical-track); } .meter.critical > i { background: var(--critical); }
.meter.lg { height: 10px; border-radius: 5px; }
.util { display: grid; grid-template-columns: minmax(60px, 1fr) 48px; align-items: center; gap: 10px; }
.util .pct { text-align: right; font-variant-numeric: tabular-nums; color: var(--text-2); font-size: 13px; }

.badge {
  display: inline-flex; align-items: center; gap: 5px;
  height: 21px; padding: 0 8px; border-radius: 999px;
  background: var(--surface-2); color: var(--text-2);
  font-size: 11.5px; font-weight: 600; white-space: nowrap;
}
.badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); }
.badge.accent { background: var(--accent-soft); color: var(--accent); }
.dot.s1 { background: var(--s1); } .dot.s2 { background: var(--s2); }
.dot.s3 { background: var(--s3); } .dot.s4 { background: var(--s4); }
.dot.good { background: var(--good); } .dot.warning { background: var(--warning); }
.dot.serious { background: var(--serious); } .dot.critical { background: var(--critical); }
.tag { display: inline-block; padding: 1px 7px; border-radius: 5px; background: var(--surface-2); color: var(--text-2); font-size: 11.5px; margin-right: 4px; }

/* --- таблицы --- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th {
  text-align: left; padding: 10px 14px; white-space: nowrap;
  font-size: 11.5px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted);
  border-bottom: 1px solid var(--border);
}
td { padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:last-child > td { border-bottom: 0; }
tbody tr.click { cursor: pointer; }
tbody tr.click:hover { background: var(--surface-2); }
td.right, th.right { text-align: right; }
td.actions { width: 1%; white-space: nowrap; text-align: right; }
.tree-cell { display: flex; align-items: center; gap: 6px; }
.twisty {
  width: 22px; height: 22px; flex: none; border: 0; border-radius: 6px; background: transparent;
  display: grid; place-items: center; color: var(--muted); cursor: pointer;
}
.twisty:hover { background: var(--surface-3); color: var(--text); }
.twisty svg { width: 14px; height: 14px; transition: transform 0.12s; }
.twisty.open svg { transform: rotate(90deg); }
.twisty.leaf { visibility: hidden; }
.empty { padding: 44px 20px; text-align: center; color: var(--muted); }
.empty svg { width: 34px; height: 34px; margin: 0 auto 12px; opacity: 0.5; }
.empty b { display: block; color: var(--text); font-weight: 600; margin-bottom: 4px; }

/* --- графики --- */
.chart { position: relative; width: 100%; }
.chart svg { width: 100%; overflow: visible; }
.chart text { fill: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 12.5px; color: var(--text-2); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 9px; height: 9px; border-radius: 3px; }
.tooltip {
  position: fixed; z-index: 100; pointer-events: none;
  min-width: 130px; padding: 9px 11px; border-radius: 10px;
  background: var(--surface); border: 1px solid var(--border-strong); box-shadow: var(--shadow-pop);
  font-size: 12.5px; opacity: 0; transition: opacity 0.08s;
}
.tooltip.show { opacity: 1; }
.tooltip .tt-title { font-weight: 600; margin-bottom: 5px; }
.tooltip .tt-row { display: flex; align-items: center; gap: 7px; color: var(--text-2); }
.tooltip .tt-row b { margin-left: auto; padding-left: 14px; color: var(--text); font-variant-numeric: tabular-nums; }
.tooltip .tt-row i { width: 8px; height: 8px; border-radius: 2px; }
.donut-wrap { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.donut-legend { display: grid; gap: 9px; flex: 1; min-width: 150px; }
.donut-legend .lg-row { display: grid; grid-template-columns: 10px 1fr auto auto; gap: 9px; align-items: center; font-size: 13px; }
.donut-legend .lg-row i { width: 9px; height: 9px; border-radius: 3px; }
.donut-legend .lg-row b { font-variant-numeric: tabular-nums; font-weight: 600; }
.donut-legend .lg-row em { font-style: normal; color: var(--muted); font-variant-numeric: tabular-nums; width: 44px; text-align: right; }
.hbars { display: grid; gap: 12px; }
.hbar { display: grid; grid-template-columns: 92px 1fr 56px; gap: 10px; align-items: center; font-size: 13px; }
.hbar .track { height: 18px; border-radius: 0 4px 4px 0; }
.hbar .fill { height: 100%; border-radius: 0 4px 4px 0; min-width: 2px; }
.hbar .lbl { display: flex; align-items: center; gap: 7px; color: var(--text-2); }
.hbar b { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }
.feed { display: grid; }
.feed-item { display: grid; grid-template-columns: 28px 1fr auto; gap: 11px; align-items: center; padding: 9px 0; border-bottom: 1px solid var(--border); }
.feed-item:last-child { border-bottom: 0; }
.feed-icon { width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; background: var(--surface-2); color: var(--text-2); }
.feed-icon svg { width: 14px; height: 14px; }
.feed-text { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.feed-time { font-size: 12px; color: var(--muted); white-space: nowrap; }
.statline { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 14px; }
.stat .v { font-size: 20px; font-weight: 650; letter-spacing: -0.02em; }
.stat .l { font-size: 12px; color: var(--muted); }

/* --- карта подсети --- */
.ipmap { display: grid; grid-template-columns: repeat(32, minmax(0, 1fr)); gap: 3px; max-width: 920px; }
.ipmap.small { grid-template-columns: repeat(16, minmax(0, 1fr)); max-width: 520px; }
.ipcell {
  aspect-ratio: 1; border: 0; padding: 0; border-radius: 4px; cursor: pointer;
  background: var(--surface-3); transition: transform 0.06s, box-shadow 0.06s;
}
.ipcell:hover { transform: scale(1.35); box-shadow: 0 0 0 2px var(--surface), 0 0 0 3px var(--text); position: relative; z-index: 2; }
.ipcell.used { background: var(--s1); }
.ipcell.reserved { background: var(--s2); }
.ipcell.dhcp { background: var(--s3); }
.ipcell.deprecated { background: var(--s4); }
.ipcell.gateway { background: var(--text); }
.ipcell.unknown { background: var(--surface-3); box-shadow: inset 0 0 0 2px var(--critical); }
.legend i.unk { background: var(--surface-3); box-shadow: inset 0 0 0 2px var(--critical); }
.ipcell.service { background: transparent; box-shadow: inset 0 0 0 1px var(--border-strong); cursor: default; }
.ipcell.service:hover { transform: none; }
.legend i.free { background: var(--surface-3); } .legend i.gw { background: var(--text); }
.legend i.svc { background: transparent; box-shadow: inset 0 0 0 1px var(--border-strong); }

/* --- окна и уведомления --- */
.overlay {
  position: fixed; inset: 0; z-index: 50; display: grid; place-items: start center;
  padding: 8vh 16px 16px; overflow: auto;
  background: rgba(8, 8, 8, 0.5); backdrop-filter: blur(3px);
}
.modal {
  width: 100%; max-width: 520px;
  background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: 16px; box-shadow: var(--shadow-pop);
}
.modal.wide { max-width: 760px; }
.modal-head { display: flex; align-items: center; gap: 10px; padding: 18px 20px 4px; }
.modal-title { font-size: 17px; font-weight: 650; letter-spacing: -0.01em; }
.modal-body { padding: 14px 20px 6px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 12px 20px 18px; }
.toasts { position: fixed; right: 20px; bottom: 20px; z-index: 200; display: grid; gap: 8px; }
.toast {
  display: flex; align-items: center; gap: 10px; max-width: 420px; padding: 11px 14px;
  background: var(--surface); border: 1px solid var(--border-strong); border-radius: 12px; box-shadow: var(--shadow-pop);
  animation: rise 0.18s ease-out;
}
.toast .dot { width: 8px; height: 8px; border-radius: 50%; flex: none; background: var(--good); }
.toast.error .dot { background: var(--critical); }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } }
.tabs { display: flex; gap: 4px; margin-bottom: 16px; border-bottom: 1px solid var(--border); overflow-x: auto; }
.tab { white-space: nowrap; flex: none; padding: 9px 14px; border: 0; background: none; color: var(--text-2); font-weight: 550; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.kv { display: grid; grid-template-columns: 150px 1fr; gap: 8px 14px; font-size: 13.5px; }
.kv dt { color: var(--muted); } .kv dd { margin: 0; word-break: break-word; }
.diff td { font-family: var(--mono); font-size: 12.5px; vertical-align: top; word-break: break-word; }
.diff tr.changed td:nth-child(2) { background: var(--critical-track); }
.diff tr.changed td:nth-child(3) { background: var(--good-track); }
.secret { padding: 11px 13px; border-radius: var(--radius-sm); background: var(--surface-2); font-family: var(--mono); font-size: 13px; word-break: break-all; user-select: all; }

/* --- вход --- */
.login {
  min-height: 100vh; display: grid; place-items: center; padding: 24px;
  background:
    radial-gradient(900px 500px at 15% -10%, rgba(57, 135, 229, 0.20), transparent 60%),
    radial-gradient(700px 500px at 100% 110%, rgba(27, 175, 122, 0.12), transparent 60%),
    var(--bg);
}
.login-card { width: 100%; max-width: 380px; padding: 30px 28px 26px; }
.login-card .brand { padding: 0 0 22px; }
.login-card h1 { font-size: 21px; font-weight: 650; letter-spacing: -0.02em; margin-bottom: 4px; }
.login-card p { color: var(--text-2); margin-bottom: 20px; }
.login-card .btn { width: 100%; height: 38px; margin-top: 4px; }
.skeleton { border-radius: var(--radius); background: linear-gradient(90deg, var(--surface) 25%, var(--surface-2) 37%, var(--surface) 63%); background-size: 400% 100%; animation: shimmer 1.3s infinite; }
@keyframes shimmer { from { background-position: 100% 0; } to { background-position: 0 0; } }

@media (max-width: 860px) {
  .shell { grid-template-columns: minmax(0, 1fr); grid-template-rows: auto 1fr; }
  .sidebar { position: static; height: auto; flex-direction: row; flex-wrap: wrap; align-items: center; padding: 10px 12px; }
  .brand { padding: 4px 10px; } .nav-title, .brand-sub, .sidebar-foot .user-role { display: none; }
  .sidebar-foot { margin: 0 0 0 auto; padding: 0; border: 0; }
  .sidebar { position: sticky; top: 0; z-index: 30; border-right: 0; border-bottom: 1px solid var(--border); }
  .menu-toggle { display: inline-flex; }
  .nav { display: none; order: 5; width: 100%; padding-top: 8px; }
  .sidebar.open .nav { display: flex; }
  .sidebar .user-name { display: none; }
  .topbar { position: static; height: 52px; }
  .page-head { align-items: flex-start; }
  .hero-value { font-size: 40px; }
  .topbar, .content { padding-left: 16px; padding-right: 16px; }
  .ipmap { grid-template-columns: repeat(16, minmax(0, 1fr)); }
  .field-row { grid-template-columns: 1fr; }
}
.empty-action { margin-top: 16px; }