:root {
  --bg: #0b0e14;
  --panel: #12161f;
  --panel-2: #161b26;
  --border: #232a38;
  --text: #e6e9ef;
  --muted: #8894a8;
  --accent: #4fb0ff;
  --up: #3ecf8e;
  --down: #ff5d5d;
  --warn: #ffb454;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

:root[data-theme="light"] {
  --bg: #f3f5f8;
  --panel: #ffffff;
  --panel-2: #eef1f6;
  --border: #dde3ea;
  --text: #1a2130;
  --muted: #62708a;
  --accent: #1c72d6;
  --up: #189a63;
  --down: #d43c3c;
  --warn: #b8720a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  min-height: 100vh;
  transition: background-color 0.15s ease, color 0.15s ease;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  flex-wrap: wrap;
  gap: 10px;
  position: relative;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 18px;
  line-height: 1;
  padding: 6px 10px;
  cursor: pointer;
}

.brand { order: 1; }
.nav { order: 2; }
.topbar-right { order: 3; display: flex; align-items: center; }

.brand {
  font-family: var(--mono);
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--up); box-shadow: 0 0 8px var(--up); }
.brand .icon { color: var(--accent); }
.brand-logo { max-height: 32px; max-width: 180px; object-fit: contain; }

.theme-toggle {
  background: none; border: 1px solid var(--border); border-radius: 6px; color: var(--text);
  padding: 5px 8px; cursor: pointer; display: inline-flex; align-items: center; margin: 0 8px;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }
.theme-toggle .icon { margin: 0; }
.theme-toggle-sun { display: none; }
.clock { font-family: var(--mono); font-size: 12px; color: var(--muted); margin-right: 12px; white-space: nowrap; }
:root[data-theme="light"] .theme-toggle-moon { display: none; }
:root[data-theme="light"] .theme-toggle-sun { display: inline-flex; }

.topology-legend { display: flex; gap: 18px; justify-content: center; margin-bottom: 10px; font-size: 12px; color: var(--muted); flex-wrap: wrap; align-items: center; }
.topology-legend-sep { width: 1px; height: 12px; background: var(--border); }
.topology-legend .dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 5px; vertical-align: middle; }
.topology-label { fill: var(--text); font-family: var(--sans); font-size: 12px; font-weight: 600; }
.topology-sublabel { fill: var(--muted); font-family: var(--sans); font-size: 10px; }
.topology-node-glyph { fill: var(--text); font-family: var(--mono); font-size: 10px; font-weight: 600; }
.topology-vendor-badge { fill: #fff; font-family: var(--mono); font-size: 8px; font-weight: 700; pointer-events: none; }
.topology-hub-label { fill: var(--text); font-family: var(--mono); font-size: 13px; font-weight: 700; }
.topology-hub-sublabel { fill: var(--muted); font-family: var(--sans); font-size: 10px; }
svg a { cursor: pointer; }
svg a:hover .topology-label { fill: var(--accent); }

.topology-toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; flex-wrap: wrap; gap: 10px; }
.topology-toolbar .topology-legend { margin-bottom: 0; }
.topology-zoom-controls { display: flex; gap: 4px; }
.topology-zoom-controls .btn { min-width: 34px; }

.topology-canvas { position: relative; height: 560px; overflow: hidden; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); cursor: grab; }
.topology-canvas:active { cursor: grabbing; }

.topo-node-circle { transition: r 0.12s ease; }
.topo-node-circle-active { r: 28; }
.topo-line { transition: stroke 0.12s ease, stroke-width 0.12s ease; }
.topo-line-active { stroke: var(--accent) !important; stroke-width: 2.5 !important; }

.topo-tooltip {
  display: none; position: absolute; z-index: 5; pointer-events: none;
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 12px; font-size: 12px; color: var(--text); min-width: 170px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
}
.topo-tooltip strong { display: block; margin-bottom: 4px; font-size: 13px; }
.topo-tooltip-row { color: var(--muted); margin-top: 2px; }
.topo-tooltip-status { font-weight: 600; margin-top: 6px; }
.topo-tooltip-status.status-up { color: var(--up); }
.topo-tooltip-status.status-down { color: var(--down); }
.topo-tooltip-status.status-unknown { color: var(--muted); }

.icon { width: 16px; height: 16px; flex-shrink: 0; vertical-align: -3px; }
.icon-lg { width: 22px; height: 22px; }
.icon-xl { width: 30px; height: 30px; }
h1 .icon, .page-header h1 .icon { width: 20px; height: 20px; margin-right: 8px; color: var(--accent); vertical-align: -3px; }
.nav a .icon, .admin-menu .dropdown a .icon, .topbar-right a .icon { margin-right: 6px; color: currentColor; }
.topbar-right a { display: inline-flex; align-items: center; }
.term-tabs a .icon { margin-right: 6px; }
.stat-tile { display: flex; align-items: center; gap: 12px; }
.stat-tile .icon-xl { color: var(--muted); opacity: 0.6; }
.stat-tile.up .icon-xl { color: var(--up); opacity: 0.8; }
.stat-tile.down .icon-xl { color: var(--down); opacity: 0.8; }
.stat-tile.warn .icon-xl { color: var(--warn); opacity: 0.8; }
.login-card h1 { display: flex; align-items: center; justify-content: center; gap: 8px; }
.login-card h1 .icon { color: var(--up); }

.nav { display: flex; gap: 18px; align-items: center; }
.nav a { color: var(--muted); font-size: 13px; display: inline-flex; align-items: center; }
.nav a.active, .nav a:hover { color: var(--text); }

.userchip { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.role-badge {
  font-family: var(--mono); font-size: 10px; padding: 2px 6px; border-radius: 3px;
  border: 1px solid var(--border); margin-left: 6px; text-transform: uppercase;
}
.role-admin { color: var(--accent); border-color: var(--accent); }
.role-operator { color: var(--warn); border-color: var(--warn); }
.role-customer { color: var(--muted); }

.container { max-width: 1180px; margin: 0 auto; padding: 24px; }

.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.page-header h1 { font-size: 19px; font-weight: 600; margin: 0; }
.page-header .sub { color: var(--muted); font-size: 13px; margin-top: 4px; }

.btn {
  display: inline-block; padding: 7px 14px; border-radius: 6px; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text); font-size: 13px; cursor: pointer; font-family: var(--sans);
}
.btn:hover { border-color: var(--accent); text-decoration: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #06121f; font-weight: 600; }
.btn-danger { border-color: var(--down); color: var(--down); }
.btn-danger:hover { background: rgba(255,93,93,0.08); }
.btn-sm { padding: 4px 9px; font-size: 12px; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.card { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 18px; margin-bottom: 16px; }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.usage-bar { height: 5px; border-radius: 3px; background: var(--border); margin-top: 5px; overflow: hidden; }
.usage-bar-fill { height: 100%; background: var(--up); border-radius: 3px; transition: width 0.2s ease; }
.usage-bar-warn { background: var(--warn); }
.usage-bar-crit { background: var(--down); }

.faceplate { display: flex; flex-wrap: wrap; gap: 6px; padding: 14px; background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px; }
.faceplate-port {
  width: 46px; height: 46px; border-radius: 6px; display: flex; align-items: center; justify-content: center;
  background: var(--bg); border: 2px solid var(--muted); cursor: pointer; transition: transform 0.1s ease;
}
.faceplate-port:hover { transform: translateY(-2px); }
.faceplate-port-up { border-color: var(--up); background: rgba(62,207,142,0.12); }
.faceplate-port-down { border-color: var(--down); background: rgba(255,93,93,0.12); }
.faceplate-port-unknown { border-color: var(--muted); }
.faceplate-port-disabled { background: var(--border); opacity: 0.6; }
.faceplate-port-label { font-family: var(--mono); font-size: 10px; font-weight: 600; color: var(--text); pointer-events: none; }
.faceplate-legend { display: flex; gap: 16px; margin-top: 10px; font-size: 12px; color: var(--muted); flex-wrap: wrap; }
.faceplate-legend .dot { display: inline-block; width: 9px; height: 9px; border-radius: 3px; margin-right: 5px; vertical-align: middle; }

.faceplate-tooltip {
  display: none; position: absolute; z-index: 5; pointer-events: none;
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 12px; font-size: 12px; color: var(--text); min-width: 160px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
}
.faceplate-tooltip strong { display: block; margin-bottom: 4px; font-size: 13px; }
.faceplate-tooltip-row { color: var(--muted); margin-top: 2px; }

.stat-row { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 18px; }
.stat-tile { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 16px 20px; min-width: 130px; flex: 1; }
.stat-tile .num { font-size: 26px; font-weight: 700; font-family: var(--mono); }
.stat-tile .label { color: var(--muted); font-size: 12px; margin-top: 4px; }
.stat-tile.up .num { color: var(--up); }
.stat-tile.down .num { color: var(--down); }
.stat-tile.warn .num { color: var(--warn); }

.admin-menu { position: relative; display: inline-block; }
.admin-menu > span { cursor: pointer; color: var(--muted); font-size: 13px; user-select: none; }
.admin-menu:hover > span, .admin-menu.active > span, .admin-menu.open > span { color: var(--text); }
.admin-menu .dropdown {
  display: none; position: absolute; top: 100%; left: 0; margin-top: 6px; background: var(--panel);
  border: 1px solid var(--border); border-radius: 8px; padding: 6px; min-width: 160px; z-index: 20;
}
/* Click-to-toggle only (not :hover) -- a hover-reveal dropdown with any gap between the
   trigger and the panel is notoriously flaky (the pointer crosses dead space and the
   panel closes before you can reach it). .active only colors the label (you're currently
   on an admin page) -- it must NOT also force the panel open, or it can never be closed
   while browsing any admin page. Only the JS-toggled .open class shows the panel. */
.admin-menu.open .dropdown { display: block; }
.admin-menu .dropdown a { display: block; padding: 7px 10px; border-radius: 5px; color: var(--text); font-size: 13px; }
.admin-menu .dropdown a:hover { background: var(--panel-2); text-decoration: none; }
.admin-menu .dropdown a.active { color: var(--accent); }

/* ---- responsive / mobile ---- */
@media (max-width: 760px) {
  .nav-toggle { display: inline-block; }

  .nav {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    width: 100%;
    order: 3;
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 6px;
    margin-top: 8px;
  }
  .topbar-right { order: 2; }
  .nav.open { display: flex; }
  .nav a { padding: 10px 12px; border-radius: 6px; }
  .nav a.active, .nav a:hover { background: var(--panel); }

  .admin-menu { display: block; width: 100%; }
  .admin-menu > span { display: block; padding: 10px 12px; }
  .admin-menu .dropdown {
    position: static; display: none; margin-top: 0; border: none; padding: 0 0 0 12px;
    background: transparent; min-width: 0;
  }
  .admin-menu.open .dropdown { display: block; }

  .container { padding: 14px; }
  .page-header { flex-wrap: wrap; gap: 10px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stat-tile { min-width: 45%; }

  .card { padding: 14px; overflow-x: auto; }
  table { min-width: 560px; }

  .login-card { width: 92vw; max-width: 340px; padding: 22px; }

  .range-picker .range-custom { width: 100%; margin-left: 0; margin-top: 6px; }
  .live-numbers { gap: 16px; }
}

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; color: var(--muted); font-weight: 500; padding: 8px 10px; border-bottom: 1px solid var(--border); font-size: 12px; text-transform: uppercase; letter-spacing: 0.4px; }
td { padding: 9px 10px; border-bottom: 1px solid var(--border); }
tr:hover td { background: rgba(255,255,255,0.015); }

.status-pill { font-family: var(--mono); font-size: 11px; padding: 3px 9px; border-radius: 20px; display: inline-flex; align-items: center; gap: 5px; }
.status-pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; }
.status-up { color: var(--up); background: rgba(62,207,142,0.08); }
.status-up::before { background: var(--up); box-shadow: 0 0 5px var(--up); }
.status-down { color: var(--down); background: rgba(255,93,93,0.08); }
.status-down::before { background: var(--down); }
.status-unknown { color: var(--muted); background: rgba(136,148,168,0.08); }
.status-unknown::before { background: var(--muted); }
.status-warn { color: var(--warn); background: rgba(255,180,84,0.08); }
.status-warn::before { background: var(--warn); }

.vendor-tag { font-family: var(--mono); font-size: 11px; color: var(--muted); border: 1px solid var(--border); padding: 2px 7px; border-radius: 4px; text-transform: uppercase; }

.mono { font-family: var(--mono); }
.muted { color: var(--muted); }

form.inline { display: inline; }
label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 5px; margin-top: 12px; }
input[type=text], input[type=password], input[type=number], select, textarea {
  width: 100%; padding: 8px 10px; background: var(--bg); border: 1px solid var(--border); border-radius: 6px;
  color: var(--text); font-family: var(--sans); font-size: 13px;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
.checkbox-row { display: flex; align-items: center; gap: 8px; margin-top: 14px; }
.checkbox-row input { width: auto; }
.checkbox-row label { margin: 0; color: var(--text); font-size: 13px; }

.alert { padding: 10px 14px; border-radius: 6px; font-size: 13px; margin-bottom: 14px; }
.alert-error { background: rgba(255,93,93,0.08); border: 1px solid var(--down); color: var(--down); }
.alert-info { background: rgba(79,176,255,0.08); border: 1px solid var(--accent); color: var(--accent); }

.empty-state { text-align: center; padding: 60px 20px; color: var(--muted); }

.term-tabs { display: flex; gap: 6px; margin-bottom: 10px; flex-wrap: wrap; }
.term-tabs button, .term-tabs a { background: var(--panel-2); border: 1px solid var(--border); color: var(--muted); padding: 6px 14px; border-radius: 6px 6px 0 0; cursor: pointer; font-family: var(--mono); font-size: 12px; display: inline-flex; align-items: center; }
.term-tabs a:hover { text-decoration: none; color: var(--text); }
.term-tabs button.active, .term-tabs a.active { color: var(--text); border-bottom-color: var(--panel); background: var(--bg); }

.chart-wrap { position: relative; height: 260px; width: 100%; }
.chart-wrap canvas { max-width: 100%; }

.kv-table td:first-child, .kv-table th { color: var(--muted); width: 220px; }

.range-picker { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.range-picker button[data-hours] {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--muted); padding: 5px 12px;
  border-radius: 6px; cursor: pointer; font-family: var(--mono); font-size: 12px;
}
.range-picker button[data-hours]:hover { color: var(--text); }
.range-picker button[data-hours].active { color: var(--text); border-color: var(--accent); background: var(--bg); }
.range-picker .range-custom { display: flex; align-items: center; gap: 6px; margin-left: 8px; }
.range-picker .range-custom input[type=date] {
  width: auto; padding: 5px 8px; font-size: 12px; background: var(--bg); border: 1px solid var(--border);
  border-radius: 6px; color: var(--text);
}

.checkbox-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 4px; margin-top: 10px; }
.checkbox-grid .checkbox-row { margin-top: 0; }

.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.tag-list .tag {
  display: inline-flex; align-items: center; gap: 6px; background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 14px; padding: 4px 6px 4px 12px; font-size: 12px; font-family: var(--mono); color: var(--text);
}
.tag-list .tag-remove {
  background: none; border: none; color: var(--muted); cursor: pointer; font-size: 15px; line-height: 1;
  padding: 2px 6px; border-radius: 50%;
}
.tag-list .tag-remove:hover { color: var(--down); background: rgba(255,93,93,0.1); }

.live-numbers { display: flex; gap: 24px; margin-top: 8px; }
.live-numbers .num { font-size: 22px; font-weight: 700; }
.live-numbers .label { color: var(--muted); font-size: 12px; margin-top: 2px; }
.result-box { background: #000; border: 1px solid var(--border); border-radius: 6px; padding: 12px; font-family: var(--mono); font-size: 12px; white-space: pre-wrap; max-height: 420px; overflow: auto; margin-top: 12px; }
#terminal-container { background: #000; border: 1px solid var(--border); border-radius: 6px; padding: 6px; height: 420px; }

.iface-row td { vertical-align: middle; }
.spark { height: 34px; width: 120px; }

.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden; padding: 20px;
}
.login-bg {
  position: fixed; inset: 0; z-index: 0;
  background:
    radial-gradient(600px circle at 15% 20%, rgba(79,176,255,0.16), transparent 60%),
    radial-gradient(500px circle at 85% 75%, rgba(62,207,142,0.14), transparent 60%),
    radial-gradient(700px circle at 50% 100%, rgba(79,176,255,0.08), transparent 60%),
    var(--bg);
  animation: login-bg-drift 18s ease-in-out infinite alternate;
}
@keyframes login-bg-drift {
  0% { background-position: 0% 0%, 0% 0%, 0% 0%, 0 0; }
  100% { background-position: 4% 6%, -4% -6%, 2% -3%, 0 0; }
}
.login-particles { position: fixed; inset: 0; z-index: 0; opacity: 0.5; pointer-events: none; }
:root[data-theme="light"] .login-particles { opacity: 0.3; }

.login-card {
  position: relative; z-index: 1; width: 360px; max-width: 100%;
  background: var(--panel);
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border); border-radius: 14px; padding: 34px 30px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.35), 0 0 0 1px rgba(79,176,255,0.06);
  animation: login-card-in 0.5s cubic-bezier(0.16,1,0.3,1);
}
@keyframes login-card-in {
  from { opacity: 0; transform: translateY(16px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.login-card h1 {
  font-family: var(--mono); font-size: 19px; text-align: center; margin: 0 0 4px;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.login-card h1 .icon { color: var(--up); filter: drop-shadow(0 0 6px rgba(62,207,142,0.5)); }
.login-card .tag { text-align: center; color: var(--muted); font-size: 12px; margin-bottom: 26px; letter-spacing: 0.3px; }
.login-card input[type=text], .login-card input[type=password] {
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.login-card input[type=text]:focus, .login-card input[type=password]:focus {
  box-shadow: 0 0 0 3px rgba(79,176,255,0.15);
}
.login-card .btn-primary {
  background: linear-gradient(135deg, var(--accent), #3b8fd9);
  border: none; font-weight: 600; letter-spacing: 0.2px;
  box-shadow: 0 4px 16px rgba(79,176,255,0.3);
}
.login-card .btn-primary:hover { filter: brightness(1.08); }
.login-footer { position: relative; z-index: 1; text-align: center; margin-top: 18px; color: var(--muted); font-size: 11px; }
@media (prefers-reduced-motion: reduce) {
  .login-bg { animation: none; }
  .login-card { animation: none; }
}

.assign-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.assign-chip { display: flex; align-items: center; gap: 6px; background: var(--panel-2); border: 1px solid var(--border); border-radius: 20px; padding: 4px 10px 4px 12px; font-size: 12px; }
.assign-chip button { background: none; border: none; color: var(--down); cursor: pointer; font-size: 13px; }