/* ==========================================================================
   Design System: Primitives & Tokens
   ========================================================================== */

:root {
  /* --- Primitives: Slate (Neutral) --- */
  --slate-50:  #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --slate-950: #020617;

  /* --- Primitives: Colors --- */
  --blue-500:   #3b82f6;
  --blue-600:   #2563eb;
  --blue-700:   #1d4ed8;
  --green-500:  #22c55e;
  --green-600:  #16a34a;
  --amber-500:  #f59e0b;
  --amber-600:  #d97706;
  --red-500:    #ef4444;
  --red-600:    #dc2626;

  /* --- Semantic Tokens: Light Mode (Default) --- */
  --bg:            var(--slate-50);
  --surface:       #ffffff;
  --fg:            var(--slate-900);
  --fg-muted:      var(--slate-500);
  --border:        var(--slate-200);
  --border-subtle: var(--slate-100);

  --primary:       var(--blue-500);
  --primary-hover: var(--blue-600);
  
  --success:       var(--green-500);
  --warning:       var(--amber-500);
  --danger:        var(--red-500);

  /* Sidebar — Light mode */
  --sidebar-bg:       var(--slate-100);
  --sidebar-fg:       var(--slate-700);
  --sidebar-hover:    rgba(0, 0, 0, 0.07);
  --sidebar-hover-fg: var(--primary);
  --sidebar-border:   rgba(0, 0, 0, 0.08);
  --sidebar-width: 240px;

  /* Login page */
  --dot-color: rgba(0, 0, 0, 0.055);

  /* Layout */
  --radius:        8px;
  --radius-sm:     4px;
  --shadow-sm:     0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow:        0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --font-sans:     -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono:     "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;

  /* Legacy variable mapping */
  --card-bg:       var(--surface);
}

/* --- Dark Mode Overrides --- */
@media (prefers-color-scheme: dark) {
  :root {
    --bg:            var(--slate-900);
    --surface:       var(--slate-800);
    --fg:            var(--slate-100);
    --fg-muted:      var(--slate-400);
    --border:        var(--slate-700);
    --border-subtle: var(--slate-800);
    --sidebar-bg:       var(--slate-800);
    --sidebar-fg:       var(--slate-200);
    --sidebar-hover:    rgba(255, 255, 255, 0.1);
    --sidebar-hover-fg: #fff;
    --sidebar-border:   rgba(255, 255, 255, 0.1);
    --dot-color: rgba(255, 255, 255, 0.045);
  }
}

/* Manual Dark Mode Toggle */
.dark {
  --bg:            var(--slate-900);
  --surface:       var(--slate-800);
  --fg:            var(--slate-100);
  --fg-muted:      var(--slate-400);
  --border:        var(--slate-700);
  --border-subtle: var(--slate-800);
  --zebra-stripe:  rgba(255,255,255,0.03);
  --sidebar-bg:       var(--slate-800);
  --sidebar-fg:       var(--slate-200);
  --sidebar-hover:    rgba(255, 255, 255, 0.1);
  --sidebar-hover-fg: #fff;
  --sidebar-border:   rgba(255, 255, 255, 0.1);
  --dot-color: rgba(255, 255, 255, 0.045);
}

/* Force Light Mode (override system dark preference) */
.light {
  --bg:            var(--slate-50);
  --surface:       #ffffff;
  --fg:            var(--slate-900);
  --fg-muted:      var(--slate-500);
  --border:        var(--slate-200);
  --border-subtle: var(--slate-100);
  --sidebar-bg:       var(--slate-100);
  --sidebar-fg:       var(--slate-700);
  --sidebar-hover:    rgba(0, 0, 0, 0.07);
  --sidebar-hover-fg: var(--primary);
  --sidebar-border:   rgba(0, 0, 0, 0.08);
  --dot-color: rgba(0, 0, 0, 0.055);
}
.light .alert-error { background: #fef2f2; color: #991b1b; border-color: #fecaca; }
.light .alert-info { background: #eff6ff; color: #1e40af; border-color: #bfdbfe; }
.light .health-bar-track { background-color: var(--slate-200); }
.light .zone-badge {
  background-color: hsl(var(--zone-hue), 80%, 90%);
  color: hsl(var(--zone-hue), 80%, 30%);
  border-color: hsl(var(--zone-hue), 60%, 80%);
}
.light .matrix-allow { background: #dcfce7; color: #166534; }
.light .matrix-deny { background: #fef2f2; color: #991b1b; }
.light .matrix-self { background: var(--slate-100); color: var(--slate-400); }
.light .badge-accept { background: #dcfce7; color: #166534; }
.light .badge-reject { background: #fef2f2; color: #991b1b; }
.light .badge-drop { background: var(--slate-100); color: var(--slate-600); }
.light .badge-continue { background: #dbeafe; color: #1e40af; }
.light .key-full { background: var(--slate-100); }

/* ==========================================================================
   Reset & Base
   ========================================================================== */

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

html, body {
  height: 100%;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

#sidebar {
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  color: var(--sidebar-fg);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  border-right: 1px solid var(--sidebar-border);
  overflow-y: auto;
}

.main-column {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#content {
  flex: 1;
  padding: 2rem;
  overflow-y: auto;
}

/* ==========================================================================
   Sidebar Components
   ========================================================================== */

.sidebar-header {
  padding: 1.5rem 1.25rem;
}

.sidebar-logo {
  max-width: 100%;
  height: auto;
  display: block;
}

.sidebar-nav {
  flex: 1;
  padding: 0.5rem 0;
  overflow-y: auto;
}

/* Standalone nav link (Dashboard) */
.nav-standalone {
  margin: 0.25rem 0.5rem 0.5rem;
}

/* Top-level accordion groups (Status / Configure / Maintenance) */
details.nav-group-top {
}

details.nav-group-top > summary.nav-group-summary-top {
  list-style: none;
  cursor: pointer;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--sidebar-fg);
  opacity: 0.7;
  padding: 0.75rem 1rem 0.375rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  transition: opacity 0.15s;
}
details.nav-group-top > summary.nav-group-summary-top:hover { opacity: 1; }
details.nav-group-top > summary.nav-group-summary-top::-webkit-details-marker { display: none; }
details.nav-group-top > summary.nav-group-summary-top::marker { display: none; }

details.nav-group-top > summary.nav-group-summary-top::after {
  content: '▸';
  font-size: 0.7rem;
}
details[open].nav-group-top > summary.nav-group-summary-top::after {
  content: '▾';
}

/* Static sub-section labels within top-level accordion */
.nav-section-label {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sidebar-fg);
  opacity: 0.45;
  padding: 0.75rem 1rem 0.2rem;
  user-select: none;
}

.nav-group-items {
  list-style: none;
  padding-bottom: 0.25rem;
}

.nav-icon {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  background-color: currentColor;
  -webkit-mask-image: var(--icon);
  mask-image: var(--icon);
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  flex-shrink: 0;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.5rem 1rem;
  color: var(--sidebar-fg);
  text-decoration: none;
  font-size: 0.875rem;
  border-radius: 0.375rem;
  margin: 0 0.5rem;
  transition: background-color 0.15s, color 0.15s;
  font-weight: 500;
}

.nav-link:hover {
  background-color: var(--sidebar-hover);
  color: var(--sidebar-hover-fg);
  text-decoration: none;
}

.nav-link.active {
  background-color: var(--primary);
  color: #fff;
  text-decoration: none;
}

/* Button styled as a nav-link (for actions like Reboot) */
.nav-link-btn {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  font-size: inherit;
}

.nav-link-danger:hover {
  color: var(--danger);
  background-color: var(--sidebar-hover);
}

.sidebar-footer {
  padding: 1.25rem;
  border-top: 1px solid var(--sidebar-border);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
  line-height: 1.25;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-hover);
  text-decoration: none;
}

.btn-block {
  display: flex;
  width: 100%;
}

/* Sidebar Actions */
.btn-sidebar-action, .btn-logout {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--sidebar-fg);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.85rem;
  text-decoration: none;
  margin-bottom: 0.5rem;
  transition: all 0.15s ease;
}

.btn-sidebar-action:hover, .btn-logout:hover {
  background: var(--sidebar-hover);
  border-color: rgba(255,255,255,0.3);
  text-decoration: none;
}

.btn-danger-hover:hover {
  border-color: var(--danger);
  color: #fca5a5;
  background: rgba(220, 38, 38, 0.1);
}

/* ==========================================================================
   Cards & Content Containers
   ========================================================================== */

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.info-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
}

/* Legacy support: info-card often contains direct h2 */
.info-card h2 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  color: var(--fg-muted);
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  margin: 0;
  background: var(--bg);
}

.card-header {
  padding: 0.75rem 1.25rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  color: var(--fg-muted);
}

.card-body {
  padding: 1.25rem;
}

/* ==========================================================================
   Tables
   ========================================================================== */

.info-table, .disk-table, .counters-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.info-table th, .info-table td,
.disk-table th, .disk-table td,
.counters-table th, .counters-table td {
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.info-table tr:last-child th, .info-table tr:last-child td,
.disk-table tbody tr:last-child td,
.counters-table tbody tr:last-child td {
  border-bottom: none;
}

.info-table tr:nth-child(even),
.disk-table tbody tr:nth-child(even),
.counters-table tbody tr:nth-child(even) {
  background-color: var(--zebra-stripe, rgba(0,0,0,0.025));
}

.info-table th {
  text-align: left;
  font-weight: 500;
  color: var(--fg-muted);
  width: 40%;
  background: transparent;
}

.disk-table thead th, .counters-table thead th {
  background: var(--bg);
  font-weight: 600;
  color: var(--fg-muted);
  text-align: left;
  font-size: 0.8rem;
  text-transform: uppercase;
}

.counters-table td {
  font-family: var(--font-mono);
}

/* New Data Table Styles */
.data-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  white-space: nowrap;
}

.data-table th, .data-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.data-table th {
  background: var(--bg);
  color: var(--fg-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
}

.data-table tbody tr:nth-child(even) {
  background-color: var(--zebra-stripe, rgba(0,0,0,0.025));
}

.data-table tbody tr:hover {
  background-color: rgba(0,0,0,0.05);
}

/* ==========================================================================
   Forms & Inputs
   ========================================================================== */

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--fg);
}

.form-group input {
  display: block;
  width: 100%;
  padding: 0.6rem 0.8rem;
  background: var(--surface);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  transition: all 0.15s ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* ==========================================================================
   Authentication
   ========================================================================== */

@keyframes login-rise {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.login-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background-color: var(--bg);
  background-image: radial-gradient(var(--dot-color) 1.5px, transparent 1.5px);
  background-size: 22px 22px;
  padding: 1rem;
}

.login-card {
  background: var(--surface);
  padding: 2.5rem;
  border-radius: var(--radius);
  box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.07),
              0 0 0 1px var(--border);
  width: 100%;
  max-width: 400px;
  border-top: 2px solid var(--primary);
  animation: login-rise 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.login-logo {
  display: block;
  max-width: 180px;
  height: auto;
  margin: 0 auto 2rem;
}

/* ==========================================================================
   Alerts & Banners
   ========================================================================== */

/* Top progress bar — shown during htmx page navigations */
.page-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: var(--primary);
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
}

.conn-banner {
  background: var(--danger);
  color: #fff;
  text-align: center;
  padding: 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 50;
}

.alert {
  padding: 1rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  border: 1px solid transparent;
}

.alert-error {
  background: #fef2f2;
  color: var(--red-600);
  border-color: #fecaca;
}

.alert-info {
  background: #eff6ff;
  color: var(--blue-700);
  border-color: #bfdbfe;
}

/* Dark mode adjustments for alerts */
@media (prefers-color-scheme: dark) {
  .alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: #fca5a5;
    border-color: rgba(239, 68, 68, 0.2);
  }
  .alert-info {
    background: rgba(59, 130, 246, 0.1);
    color: #93c5fd;
    border-color: rgba(59, 130, 246, 0.2);
  }
}
.dark .alert-error {
  background: rgba(239, 68, 68, 0.1);
  color: #fca5a5;
  border-color: rgba(239, 68, 68, 0.2);
}
.dark .alert-info {
  background: rgba(59, 130, 246, 0.1);
  color: #93c5fd;
  border-color: rgba(59, 130, 246, 0.2);
}

/* ==========================================================================
   Status Indicators
   ========================================================================== */

/* Legacy Status Dots */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 0.5rem;
  vertical-align: middle;
}

.status-up { background: var(--success); }
.status-down { background: var(--danger); }

/* New Interface Status Indicators */
.iface-status {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 0.5rem;
}

.iface-up {
  background-color: var(--success);
  box-shadow: 0 0 0 rgba(34, 197, 94, 0.4);
  animation: pulse-green 2s infinite;
}

.iface-down {
  background-color: var(--danger);
}

.iface-lower-down {
  background-color: var(--warning);
}

@keyframes pulse-green {
  0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7); }
  70% { box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}


/* ==========================================================================
   Components: Health Bar
   ========================================================================== */

.health-bar-track {
  width: 100%;
  height: 6px;
  background-color: var(--slate-200);
  border-radius: 99px;
  overflow: hidden;
}

.health-bar-fill {
  height: 100%;
  background-color: var(--success);
  border-radius: 99px;
  transition: width 0.5s ease;
}

.health-bar-fill.is-warn { background-color: var(--warning); }
.health-bar-fill.is-crit { background-color: var(--danger); }

/* Dark mode track */
@media (prefers-color-scheme: dark) {
  .health-bar-track { background-color: var(--slate-700); }
}
.dark .health-bar-track { background-color: var(--slate-700); }

/* ==========================================================================
   Components: Zone Badge
   ========================================================================== */

.zone-badge {
  /* Requires --zone-hue to be set inline or via utility */
  --zone-hue: 200; /* Default */
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  background-color: hsl(var(--zone-hue), 80%, 90%);
  color: hsl(var(--zone-hue), 80%, 30%);
  border: 1px solid hsl(var(--zone-hue), 60%, 80%);
}

@media (prefers-color-scheme: dark) {
  .zone-badge {
    background-color: hsl(var(--zone-hue), 60%, 20%);
    color: hsl(var(--zone-hue), 80%, 85%);
    border-color: hsl(var(--zone-hue), 60%, 30%);
  }
}
.dark .zone-badge {
  background-color: hsl(var(--zone-hue), 60%, 20%);
  color: hsl(var(--zone-hue), 80%, 85%);
  border-color: hsl(var(--zone-hue), 60%, 30%);
}

/* ==========================================================================
   Utilities
   ========================================================================== */

.num {
  font-variant-numeric: tabular-nums;
  font-family: var(--font-mono);
}

/* ==========================================================================
   Domain Specific: Firewall, Keystore, Firmware
   ========================================================================== */

/* Zone Matrix */
.matrix-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.zone-matrix {
  border-collapse: collapse;
  font-size: 0.9rem;
  width: 100%;
}

.zone-matrix th, .zone-matrix td {
  padding: 0.75rem;
  text-align: center;
  border: 1px solid var(--border);
  min-width: 90px;
}

.zone-matrix thead th {
  font-weight: 600;
  color: var(--fg-muted);
  background: var(--bg);
}

.zone-matrix tbody th {
  font-weight: 600;
  text-align: right;
  background: var(--bg);
  color: var(--fg-muted);
}

.matrix-corner {
  color: var(--fg-muted);
}

.matrix-allow {
  background: #dcfce7;
  color: #166534;
  font-weight: 700;
}
.matrix-deny {
  background: #fef2f2;
  color: #991b1b;
  font-weight: 700;
}
.matrix-self {
  background: var(--slate-100);
  color: var(--slate-400);
}

@media (prefers-color-scheme: dark) {
  .matrix-allow { background: rgba(22, 163, 74, 0.2); color: #86efac; }
  .matrix-deny { background: rgba(220, 38, 38, 0.2); color: #fca5a5; }
  .matrix-self { background: var(--slate-800); color: var(--slate-600); }
}
.dark .matrix-allow { background: rgba(22, 163, 74, 0.2); color: #86efac; }
.dark .matrix-deny { background: rgba(220, 38, 38, 0.2); color: #fca5a5; }
.dark .matrix-self { background: var(--slate-800); color: var(--slate-600); }

.matrix-legend {
  display: flex;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-top: 1rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.legend-swatch {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: capitalize;
}

.badge-accept { background: #dcfce7; color: #166534; }
.badge-reject { background: #fef2f2; color: #991b1b; }
.badge-drop   { background: var(--slate-100); color: var(--slate-600); }
.badge-continue { background: #dbeafe; color: #1e40af; }

@media (prefers-color-scheme: dark) {
  .badge-accept { background: rgba(22, 163, 74, 0.2); color: #86efac; }
  .badge-reject { background: rgba(220, 38, 38, 0.2); color: #fca5a5; }
  .badge-drop   { background: var(--slate-800); color: var(--slate-400); }
  .badge-continue { background: rgba(59, 130, 246, 0.2); color: #93c5fd; }
}
.dark .badge-accept { background: rgba(22, 163, 74, 0.2); color: #86efac; }
.dark .badge-reject { background: rgba(220, 38, 38, 0.2); color: #fca5a5; }
.dark .badge-drop   { background: var(--slate-800); color: var(--slate-400); }
.dark .badge-continue { background: rgba(59, 130, 246, 0.2); color: #93c5fd; }

/* General-purpose status badges */
.badge-up      { background: #dcfce7; color: #166534; }
.badge-down    { background: #fef2f2; color: #991b1b; }
.badge-warning { background: #fef9c3; color: #854d0e; }
.badge-info    { background: #dbeafe; color: #1e40af; }
.badge-neutral { background: var(--slate-100); color: var(--slate-600); }

@media (prefers-color-scheme: dark) {
  .badge-up      { background: rgba(22, 163, 74, 0.2);  color: #86efac; }
  .badge-down    { background: rgba(220, 38, 38, 0.2);  color: #fca5a5; }
  .badge-warning { background: rgba(245, 158, 11, 0.2); color: #fcd34d; }
  .badge-info    { background: rgba(59, 130, 246, 0.2); color: #93c5fd; }
  .badge-neutral { background: var(--slate-800); color: var(--slate-400); }
}
.dark .badge-up      { background: rgba(22, 163, 74, 0.2);  color: #86efac; }
.dark .badge-down    { background: rgba(220, 38, 38, 0.2);  color: #fca5a5; }
.dark .badge-warning { background: rgba(245, 158, 11, 0.2); color: #fcd34d; }
.dark .badge-info    { background: rgba(59, 130, 246, 0.2); color: #93c5fd; }
.dark .badge-neutral { background: var(--slate-800); color: var(--slate-400); }
.light .badge-up      { background: #dcfce7; color: #166534; }
.light .badge-down    { background: #fef2f2; color: #991b1b; }
.light .badge-warning { background: #fef9c3; color: #854d0e; }
.light .badge-info    { background: #dbeafe; color: #1e40af; }
.light .badge-neutral { background: var(--slate-100); color: var(--slate-600); }

/* Interfaces */
.iface-name { white-space: nowrap; font-weight: 500; }
.iface-name a { color: var(--primary); text-decoration: none; }
.iface-name a:hover { text-decoration: underline; }

.tree-pipe { color: var(--slate-300); font-family: var(--font-mono); margin-right: 0.5rem; }
.addr-origin { color: var(--fg-muted); font-size: 0.75rem; margin-left: 0.5rem; }

.wg-peer {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.wg-peer:last-child { border-bottom: none; }

.eth-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  font-size: 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.eth-stats-row {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.eth-stats dt { color: var(--fg-muted); font-family: var(--font-mono); }
.eth-stats dd { text-align: right; font-family: var(--font-mono); font-weight: 600; }

.iface-detail-header { margin-bottom: 1.5rem; border-bottom: 1px solid var(--border); padding-bottom: 1rem; }
.iface-detail-header h2 { font-size: 1.5rem; font-weight: 600; color: var(--fg); }
.back-link { display: inline-flex; align-items: center; margin-bottom: 0.5rem; font-size: 0.9rem; }

.info-card h3 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin: 1.5rem 0 0.75rem;
  padding-left: 0.5rem;
  border-left: 3px solid var(--primary);
}

/* Firmware & Reboot */
.firmware-form { display: flex; gap: 1rem; align-items: flex-end; }
.firmware-form .form-group { flex: 1; margin-bottom: 0; }

.progress-bar-wrap {
  background: var(--slate-200);
  border-radius: var(--radius);
  height: 1.25rem;
  overflow: hidden;
  margin-top: 0.5rem;
}
.progress-bar {
  background: var(--primary);
  height: 100%;
  width: 0%;
  transition: width 0.3s ease;
}
.progress-text { font-size: 0.85rem; color: var(--fg-muted); margin-top: 0.5rem; text-align: center; }

.reboot-overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
}
.reboot-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--slate-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 1.5rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

.reboot-message { font-size: 1.25rem; font-weight: 600; color: var(--fg); }
.reboot-status { font-size: 1rem; color: var(--fg-muted); margin-top: 0.5rem; }
.reboot-status.is-error { color: var(--danger); }

/* Keystore */
.empty-message { color: var(--fg-muted); font-style: italic; padding: 1rem; text-align: center; }
.key-full { font-family: var(--font-mono); font-size: 0.8rem; word-break: break-all; color: var(--fg); background: var(--slate-100); padding: 0.25rem; border-radius: 4px; }
@media (prefers-color-scheme: dark) { .key-full { background: var(--slate-800); } }
.dark .key-full { background: var(--slate-800); }

/* Survey */
.survey-chart { max-width: 100%; height: auto; display: block; }
.survey-hint { font-size: 0.8rem; color: var(--fg-muted); margin-bottom: 1rem; }

/* WiFi */
.wifi-radio-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.wifi-caps {
  display: flex;
  gap: 0.375rem;
  align-items: center;
}

.wifi-survey-body {
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.wifi-survey-body .survey-chart {
  max-height: 220px;
  width: auto;
}

.wifi-ssid {
  font-weight: 400;
  color: var(--fg-muted);
  font-size: 0.85rem;
  margin-left: 0.5rem;
  font-family: var(--font-mono);
}

.wifi-band-list {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.wifi-band-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.wifi-band-caps {
  display: inline-flex;
  gap: 0.25rem;
}

/* Signal Strength */
.signal-excellent { color: var(--success); font-weight: 600; }
.signal-good { color: var(--green-600); font-weight: 600; }
.signal-ok { color: var(--warning); font-weight: 600; }
.signal-poor { color: var(--danger); font-weight: 600; }

/* ==========================================================================
   Topbar & User Menu
   ========================================================================== */

.topbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0 1rem;
  height: 48px;
  background: var(--sidebar-bg);
  border-bottom: 1px solid var(--sidebar-border);
  flex-shrink: 0;
  z-index: 100;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
}

.hamburger-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 0.375rem;
  padding: 0.375rem;
  cursor: pointer;
  color: var(--fg-muted);
  display: none;
  align-items: center;
}
.hamburger-btn:hover {
  color: var(--fg);
  border-color: var(--fg-muted);
}

/* User menu button */
.user-menu {
  position: relative;
}

.user-menu-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: none;
  border: none;
  border-radius: var(--radius);
  padding: 0.35rem 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--fg-muted);
  cursor: pointer;
  transition: color 0.15s;
}
.user-menu-btn:hover {
  color: var(--fg);
}
.user-menu-btn .chevron {
  color: var(--fg-muted);
  transition: transform 0.2s;
}
.user-menu-btn[aria-expanded="true"] .chevron {
  transform: rotate(180deg);
}

/* Dropdown panel — opens on hover */
.user-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 190px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 0.375rem 0;
  z-index: 200;
  /* Hidden by default; shown on hover or when button is aria-expanded */
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: opacity 0.15s, transform 0.15s;
}
.user-menu:hover .user-dropdown,
.user-menu-btn[aria-expanded="true"] + .user-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.dropdown-section-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-muted);
  padding: 0.25rem 0.875rem 0.125rem;
}

.dropdown-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0.375rem 0;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.45rem 0.875rem;
  font-size: 0.875rem;
  color: var(--fg-muted);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: none;
  text-align: left;
  transition: background 0.1s, color 0.1s;
  box-sizing: border-box;
}
.dropdown-item:hover,
.dropdown-item:focus {
  background: var(--border);
  color: var(--fg);
  text-decoration: none;
}
.dropdown-item svg { flex-shrink: 0; color: var(--fg-muted); transition: color 0.1s; }
.dropdown-item:hover svg,
.dropdown-item:focus svg { color: var(--fg); }
.dropdown-item-danger:hover,
.dropdown-item-danger:focus { color: var(--danger); }
.dropdown-item-danger:hover svg,
.dropdown-item-danger:focus svg { color: var(--danger); }

/* Theme checkmark — hidden by default, shown on active option */
.theme-check { margin-left: auto; flex-shrink: 0; opacity: 0; transition: opacity 0.1s; }
.theme-opt.is-active .theme-check { opacity: 1; }

/* Login page floating theme button */
.login-theme-btn {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.45rem;
  cursor: pointer;
  color: var(--fg-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  transition: all 0.15s;
}
.login-theme-btn:hover { color: var(--fg); border-color: var(--fg-muted); }

.login-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
  color: var(--fg-muted);
}

.login-header h1 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--fg);
  line-height: 1;
}

/* ==========================================================================
   Responsive Layout
   ========================================================================== */

/* Narrow (≤1024px): Sidebar hidden behind hamburger overlay */
@media (max-width: 1024px) {
  #sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    z-index: 300;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    width: var(--sidebar-width);
  }

  body.sidebar-open #sidebar {
    transform: translateX(0);
  }

  body.sidebar-open::after {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 200;
  }

  #content {
    height: auto;
    min-height: 100%;
  }

  .hamburger-btn {
    display: flex;
  }
}

/* Desktop (>1024px): hamburger hidden, sidebar always visible */
@media (min-width: 1025px) {
  .hamburger-btn {
    display: none;
  }
}

/* Column priority hiding for data tables */
@media (max-width: 600px) {
  .col-priority-2 { display: none; }
}
@media (max-width: 480px) {
  .col-priority-3 { display: none; }
}