:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --surface-alt: #eef1f6;
  --border: #dde2ea;
  --text: #1a2233;
  --text-muted: #667085;
  --accent: #2f6fed;
  --accent-hover: #2358c4;
  --accent-contrast: #ffffff;
  --ok: #12875a;
  --ok-bg: #e4f7ee;
  --warn: #a15c00;
  --warn-bg: #fff3de;
  --danger: #c0322a;
  --danger-bg: #fbe9e8;
  --neutral-bg: #eef1f6;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(20, 30, 50, 0.06), 0 4px 16px rgba(20, 30, 50, 0.06);
  --nav-height: 56px;
  font-size: 15px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10141c;
    --surface: #171d29;
    --surface-alt: #1e2634;
    --border: #2a3244;
    --text: #e7ebf3;
    --text-muted: #96a1b5;
    --accent: #5b8ef0;
    --accent-hover: #79a3f3;
    --accent-contrast: #0b1220;
    --ok: #35c281;
    --ok-bg: rgba(53, 194, 129, 0.12);
    --warn: #e0a63c;
    --warn-bg: rgba(224, 166, 60, 0.12);
    --danger: #e5675f;
    --danger-bg: rgba(229, 103, 95, 0.12);
    --neutral-bg: #1e2634;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 20px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font-family: inherit; }

/* ---------- Layout ---------- */
#app { min-height: 100%; display: flex; flex-direction: column; }

.topbar {
  height: var(--nav-height);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar__brand {
  font-weight: 700;
  font-size: 16px;
  white-space: nowrap;
  margin-right: 8px;
}
.topbar__nav {
  display: flex;
  gap: 4px;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
}
.topbar__nav::-webkit-scrollbar { display: none; }
.topbar__nav a {
  color: var(--text-muted);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  text-decoration: none;
  transition: background 160ms ease, color 160ms ease;
}
.topbar__nav a:hover { background: var(--surface-alt); color: var(--text); }
.topbar__nav a.active { background: var(--accent); color: var(--accent-contrast); }
.topbar__user {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  font-size: 13px;
  color: var(--text-muted);
}
.topbar__menu-btn { display: none; }

.scan-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--neutral-bg);
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
}
.scan-pill.running { color: var(--accent); background: rgba(47, 111, 237, 0.12); }
.scan-pill .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: currentColor;
}
.scan-pill.running .dot { animation: pulse 1.1s infinite ease-in-out; }
@keyframes pulse { 0%, 100% { opacity: .35; } 50% { opacity: 1; } }

main {
  flex: 1;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 16px 64px;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.page-header h1 { font-size: 20px; margin: 0; }
.page-header .sub { color: var(--text-muted); font-size: 13px; margin-top: 2px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease, opacity 160ms ease, transform 160ms ease;
}
.btn:hover { background: var(--surface-alt); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-contrast); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-danger { color: var(--danger); border-color: var(--danger); background: transparent; }
.btn-danger:hover { background: var(--danger-bg); }
.btn-sm { padding: 5px 10px; font-size: 12.5px; }
.btn-icon { padding: 6px; width: 32px; height: 32px; justify-content: center; }

/* ---------- Cards / surfaces ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
  margin-bottom: 16px;
}
.card h2 { font-size: 15px; margin: 0 0 12px; }
.card-row { display: flex; gap: 16px; flex-wrap: wrap; }

.stat {
  flex: 1;
  min-width: 120px;
  background: var(--surface-alt);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}
.stat .num { font-size: 22px; font-weight: 700; }
.stat .label { font-size: 12.5px; color: var(--text-muted); margin-top: 2px; }

/* ---------- Forms ---------- */
label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 5px; color: var(--text-muted); }
input[type=text], input[type=password], input[type=number], input[type=email], select, textarea {
  width: 100%;
  padding: 9px 11px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(47, 111, 237, 0.15);
}
.field { margin-bottom: 14px; }
.field-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; }
.field-row > .field { flex: 1; min-width: 140px; margin-bottom: 0; }
.hint { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: auto; }
.checkbox-row label { margin: 0; }

/* ---------- Tables (become cards on narrow screens) ---------- */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); font-size: 13.5px; vertical-align: top; }
th { color: var(--text-muted); font-weight: 600; font-size: 12.5px; text-transform: uppercase; letter-spacing: .02em; }
tr:last-child td { border-bottom: none; }
.table-wrap { overflow-x: auto; }

/* ---------- Badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.badge-ok { background: var(--ok-bg); color: var(--ok); }
.badge-warn { background: var(--warn-bg); color: var(--warn); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-neutral { background: var(--neutral-bg); color: var(--text-muted); }

/* ---------- Login ---------- */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.login-card { width: 100%; max-width: 360px; }
.login-card h1 { font-size: 19px; margin: 0 0 4px; text-align: center; }
.login-card .sub { text-align: center; color: var(--text-muted); font-size: 13px; margin-bottom: 20px; }

/* ---------- Toasts ---------- */
#toasts {
  position: fixed;
  bottom: 16px;
  right: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 100;
  max-width: calc(100vw - 32px);
}
.toast {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13.5px;
  min-width: 220px;
  animation: toast-in .15s ease-out;
}
.toast.error { border-color: var(--danger); color: var(--danger); }
.toast.success { border-color: var(--ok); color: var(--ok); }
.toast.warn { border-color: var(--warn); color: var(--warn); }
@keyframes toast-in { from { transform: translateY(6px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(10, 14, 22, 0.45);
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
  z-index: 50;
}
.modal {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  width: 100%;
  max-width: 420px;
  max-height: calc(100vh - 32px);
  overflow-y: auto;
}
.modal.wide { max-width: 600px; }
.modal.xwide { max-width: 920px; }
.modal h2 { margin-top: 0; font-size: 16px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }

/* ---------- Device list / ports ---------- */
.device-name { font-weight: 600; }
.device-ip { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12.5px; color: var(--text-muted); }
.mac { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; color: var(--text-muted); }
.copyable { cursor: pointer; border-bottom: 1px dashed var(--text-muted); }
.copyable:hover { color: var(--accent); border-bottom-color: var(--accent); }
.port-list { display: flex; flex-direction: column; gap: 4px; margin-top: 6px; }
.port-row { display: flex; align-items: center; gap: 8px; font-size: 13px; padding: 6px 8px; border-radius: var(--radius-sm); background: var(--surface-alt); }
.port-row .name { flex: 1; font-weight: 600; }
.port-row .speed { color: var(--text-muted); font-size: 12px; }
.port-row.changed { outline: 2px solid var(--warn); }
.empty-state { color: var(--text-muted); font-size: 14px; padding: 24px 8px; text-align: center; }
.list-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.clickable-row { cursor: pointer; }
.clickable-row:hover { background: var(--surface-alt); }

/* ---------- Responsive: mobile-first ----------
   Правила ниже — раскладка для телефона (базовая). Планшет/десктоп (от 721px)
   возвращают обычную горизонтальную навигацию и настоящие таблицы. */
.topbar__nav {
  position: fixed;
  top: var(--nav-height);
  left: 0; right: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-direction: column;
  padding: 8px;
  display: none;
  max-height: calc(100vh - var(--nav-height));
  overflow-y: auto;
}
.topbar__nav.open { display: flex; }
.topbar__nav a { padding: 12px; }
.topbar__menu-btn { display: inline-flex; }
.topbar__user span.username { display: none; }

table, thead, tbody, th, tr, td { display: block; }
thead { display: none; }
.table-wrap tr {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  padding: 8px 10px;
}
.table-wrap td { border-bottom: none; padding: 5px 2px; display: flex; justify-content: space-between; gap: 10px; }
.table-wrap td::before {
  content: attr(data-label);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  flex-shrink: 0;
}
main { padding: 14px 12px 48px; }
.card { padding: 14px; }

@media (min-width: 721px) {
  .topbar__nav {
    position: static;
    display: flex;
    flex-direction: row;
    padding: 0;
    background: transparent;
    border-bottom: none;
    max-height: none;
    overflow-y: visible;
    overflow-x: auto;
  }
  .topbar__nav a { padding: 8px 12px; }
  .topbar__menu-btn { display: none; }
  .topbar__user span.username { display: inline; }

  table { display: table; }
  thead { display: table-header-group; }
  tbody { display: table-row-group; }
  tr { display: table-row; }
  th, td { display: table-cell; }
  .table-wrap tr { border: none; border-radius: 0; margin-bottom: 0; padding: 0; }
  .table-wrap td { padding: 10px 8px; }
  .table-wrap td::before { content: none; }
  main { padding: 20px 16px 64px; }
  .card { padding: 18px; }
}

/* ---------- Состояния и доступность ---------- */
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
input:focus-visible, select:focus-visible, textarea:focus-visible { outline-offset: 0; border-color: var(--accent); }
.btn:active:not(:disabled) { transform: translateY(1px); background: var(--border); }
.btn-primary:active:not(:disabled) { background: var(--accent-hover); filter: brightness(.92); }
.btn-danger:active:not(:disabled) { background: var(--danger-bg); filter: brightness(.95); }
.topbar__nav a:active { background: var(--border); }
input, select, textarea { transition: border-color 160ms ease, box-shadow 160ms ease; }
input:disabled, select:disabled, textarea:disabled { opacity: .6; cursor: not-allowed; }
.btn-block { width: 100%; justify-content: center; }

/* Валидация форм */
input[aria-invalid="true"] { border-color: var(--danger); }
.field-error { color: var(--danger); font-size: 12.5px; margin-top: 4px; }
.form-alert {
  color: var(--danger);
  background: var(--danger-bg);
  border: 1px solid var(--danger);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  font-size: 13.5px;
  margin-bottom: 14px;
}
[hidden] { display: none !important; }

main.login-screen { flex: 1; min-height: 0; max-width: none; padding: 20px; }
.app-footer {
  padding: 14px 16px;
  text-align: center;
  font-size: 12.5px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* ---------- Схема портов (лицевая панель) ---------- */
.ports-front { margin: 8px 0; padding: 10px; background: var(--surface-alt); border: 1px solid var(--border); border-radius: var(--radius); }
.ports-scroll { display: flex; gap: 4px; overflow-x: auto; padding: 2px; }
.pcol { display: flex; flex-direction: column; gap: 4px; flex: 0 0 auto; }
.pcol.gap { margin-right: 8px; }
.pcell {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 34px; height: 30px; padding: 0 3px; border-radius: 4px; font-size: 11px; font-weight: 700; white-space: nowrap;
  border: 2px solid var(--border); background: var(--surface); color: var(--text-muted);
  position: relative; cursor: default;
}
.pcell.empty { visibility: hidden; }
.pcell.link { background: var(--ok-bg); border-color: var(--ok); color: var(--ok); }
.pcell.down { background: var(--surface); border-color: var(--border); color: var(--text-muted); }
.pcell.disabled {
  background: var(--danger-bg); border-color: var(--danger); color: var(--danger);
  background-image: linear-gradient(to top right, transparent calc(50% - 1px), var(--danger) 50%, transparent calc(50% + 1px));
}
.ports-legend { display: flex; flex-wrap: wrap; gap: 14px; font-size: 12.5px; color: var(--text-muted); margin-bottom: 6px; }
.ports-legend span { display: inline-flex; align-items: center; gap: 6px; }
.ports-legend .pcell { width: 16px; min-width: 0; height: 14px; padding: 0; border-width: 2px; }
.ports-details summary { cursor: pointer; color: var(--accent); font-size: 13px; margin: 6px 0; }

/* ---------- Фильтр по типу оборудования ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 12px; }
.chip {
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  border-radius: 999px; padding: 6px 14px; font-size: 13.5px; cursor: pointer;
}
.chip span { color: var(--text-muted); margin-left: 4px; font-size: 12px; }
.chip:hover { border-color: var(--accent); }
.chip.active { background: var(--accent); border-color: var(--accent); color: var(--accent-contrast); }
.chip.active span { color: inherit; opacity: .85; }

.pcell.clickable, .port-row.clickable { cursor: pointer; }
.pcell.clickable:hover { filter: brightness(0.95); transform: translateY(-1px); box-shadow: var(--shadow); }
.port-row.clickable:hover { outline: 1px solid var(--accent); }

/* ---------- Заметка к порту ---------- */
.note-box { margin: 4px 0 10px; padding: 10px 12px; background: var(--surface-alt); border-radius: var(--radius-sm); font-size: 13.5px; }
.note-box textarea { width: 100%; resize: vertical; font: inherit; }
.note-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.modal-sub { font-size: 14px; margin: 12px 0 6px; }
.pcell.noted::after {
  content: ""; position: absolute; top: -4px; right: -4px; width: 9px; height: 9px;
  border-radius: 50%; background: var(--accent); border: 2px solid var(--surface);
}

.pcell.long { font-size: 9.5px; letter-spacing: -0.2px; }
.pcell span { overflow: hidden; text-overflow: ellipsis; max-width: 100%; }

/* VLAN порта */
.pcell.trunk { box-shadow: inset 0 -3px 0 var(--warn, #d98a00); }
.pcell.trunk.link { box-shadow: inset 0 -3px 0 var(--warn, #d98a00); }
.vlan-box { margin-bottom: 10px; }
.vlan-chips { display: flex; flex-wrap: wrap; gap: 4px; }

/* Контроль */
.watch-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.header-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* История: подробности изменений портов прогона */
tr.clickable { cursor: pointer; }
tr.clickable:hover { background: var(--surface-alt); }
.run-change-device { margin-bottom: 14px; }
.run-change-head { display: flex; align-items: baseline; gap: 8px; margin-bottom: 4px; flex-wrap: wrap; }

/* Wake-on-LAN */
.wol-picker { max-height: 220px; overflow-y: auto; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 6px 10px; margin-top: 6px; background: var(--surface-alt); }
.wol-pick-row { display: flex; align-items: center; gap: 8px; padding: 4px 0; font-size: 13.5px; }
.export-picker { max-height: 360px; overflow-y: auto; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 6px 10px; margin-top: 6px; background: var(--surface-alt); }
.export-pick-row { display: flex; align-items: center; gap: 8px; padding: 4px 0; font-size: 13.5px; border-bottom: 1px solid var(--border); }
.export-pick-row:last-child { border-bottom: none; }
.export-pick-row input { flex: none; }
.export-pick-row .export-pick-main { flex: 1; min-width: 0; }
.export-pick-row .export-pick-name { font-weight: 600; }
.export-toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 8px; }
.export-toolbar .field { flex: 1; min-width: 140px; margin-bottom: 0; }
.export-count { font-size: 13px; color: var(--text-muted); margin-left: auto; white-space: nowrap; }

/* Трафик портов */
.traffic-sparkline { width: 100%; height: 70px; display: block; background: var(--surface-alt); border-radius: var(--radius-sm); }
.traffic-line-in { stroke: var(--accent); stroke-width: 1.6; }
.traffic-line-out { stroke: #e08a2e; stroke-width: 1.6; }
.traffic-dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 3px; vertical-align: middle; }
.traffic-dot-in { background: var(--accent); }
.traffic-dot-out { background: #e08a2e; }

/* Топология сети (LLDP) */
.topo-diagram { width: 100%; height: auto; max-height: 480px; display: block; }
.topo-edge-mutual { stroke: var(--accent); stroke-width: 2; }
.topo-edge-one { stroke: var(--border); stroke-width: 1.5; stroke-dasharray: 4 3; }
.topo-node circle { fill: var(--surface); stroke: var(--accent); stroke-width: 2; }
.topo-node text { font-size: 11px; fill: var(--text); }