:root {
  color-scheme: light;
  --surface-1: #fcfcfb;
  --surface-2: #f9f9f7;
  --surface-card: #ffffff;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --gridline: #e1e0d9;
  --border: rgba(11, 11, 11, 0.1);
  --series-1: #2a78d6; /* blue */
  --series-2: #eb6834; /* orange */
  --series-3: #1baf7a; /* aqua */
  --status-good: #0ca30c;
  --status-warning: #fab219;
  --status-serious: #ec835a;
  --status-critical: #d03b3b;
}

@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme='light'])) {
    color-scheme: dark;
    --surface-1: #1a1a19;
    --surface-2: #0d0d0d;
    --surface-card: #202020;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #898781;
    --gridline: #2c2c2a;
    --border: rgba(255, 255, 255, 0.1);
    --series-1: #3987e5;
    --series-2: #d95926;
    --series-3: #199e70;
    --status-good: #0ca30c;
    --status-warning: #fab219;
    --status-serious: #ec835a;
    --status-critical: #e66767;
  }
}

:root[data-theme='dark'] {
  color-scheme: dark;
  --surface-1: #1a1a19;
  --surface-2: #0d0d0d;
  --surface-card: #202020;
  --text-primary: #ffffff;
  --text-secondary: #c3c2b7;
  --text-muted: #898781;
  --gridline: #2c2c2a;
  --border: rgba(255, 255, 255, 0.1);
  --series-1: #3987e5;
  --series-2: #d95926;
  --series-3: #199e70;
  --status-good: #0ca30c;
  --status-warning: #fab219;
  --status-serious: #ec835a;
  --status-critical: #e66767;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: var(--surface-2);
  color: var(--text-primary);
  min-height: 100vh;
}

a {
  color: inherit;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: var(--surface-1);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar .brand {
  font-weight: 700;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tabs {
  display: flex;
  gap: 0.25rem;
}

.tabs a {
  padding: 0.5rem 0.9rem;
  border-radius: 6px;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.tabs a.active {
  background: var(--series-1);
  color: #fff;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 6px;
  padding: 0.4rem 0.7rem;
  cursor: pointer;
  font-size: 0.85rem;
}

.icon-btn:hover {
  border-color: var(--series-1);
  color: var(--text-primary);
}

main {
  padding: 1.25rem;
  max-width: 1400px;
  margin: 0 auto;
}

.section-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 1.5rem 0 0.75rem;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.9rem;
}

.stat-tile {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.1rem;
}

.stat-tile .label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.stat-tile .value {
  font-size: 1.7rem;
  font-weight: 700;
  margin-top: 0.2rem;
}

.stat-tile .sub {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.15rem;
}

.stat-tile .bar-track {
  margin-top: 0.6rem;
  height: 6px;
  border-radius: 3px;
  background: var(--gridline);
  overflow: hidden;
}

.stat-tile .bar-fill {
  height: 100%;
  border-radius: 3px;
  background: var(--series-1);
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 1rem;
  margin-top: 0.75rem;
}

.chart-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
}

.chart-card h3 {
  margin: 0 0 0.6rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.chart-card canvas {
  max-height: 220px;
}

.container-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.85rem;
  margin-top: 0.75rem;
}

.container-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--status-good);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  cursor: pointer;
}

.container-card.status-warning {
  border-left-color: var(--status-warning);
}
.container-card.status-serious {
  border-left-color: var(--status-serious);
}
.container-card.status-critical {
  border-left-color: var(--status-critical);
}

.container-card .name {
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  word-break: break-word;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--status-good);
  flex: none;
}
.status-dot.status-warning {
  background: var(--status-warning);
}
.status-dot.status-serious {
  background: var(--status-serious);
}
.status-dot.status-critical {
  background: var(--status-critical);
}

.container-card .meta {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.container-card .metrics {
  display: flex;
  gap: 1rem;
  margin-top: 0.6rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.self-badge {
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--series-1);
  background: color-mix(in srgb, var(--series-1) 14%, transparent);
  border-radius: 999px;
  padding: 0.1rem 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.container-card .metrics b {
  color: var(--text-primary);
  display: block;
  font-size: 1rem;
}

.empty-state {
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 1.5rem;
  text-align: center;
  border: 1px dashed var(--border);
  border-radius: 10px;
}

.loading-state {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 2rem;
  grid-column: 1 / -1;
}

.spinner {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--border);
  border-top-color: var(--series-1);
  animation: spin 0.7s linear infinite;
  flex: none;
}

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

.error-banner {
  background: color-mix(in srgb, var(--status-critical) 12%, var(--surface-card));
  border: 1px solid var(--status-critical);
  color: var(--text-primary);
  padding: 0.8rem 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  font-size: 0.88rem;
}

/* Login page */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  width: 320px;
}

.login-card h1 {
  font-size: 1.2rem;
  margin: 0 0 1.25rem;
  text-align: center;
}

.login-card label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.3rem;
  margin-top: 0.9rem;
}

.login-card input {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface-1);
  color: var(--text-primary);
  font-size: 0.9rem;
}

.login-card button {
  width: 100%;
  margin-top: 1.3rem;
  padding: 0.6rem;
  border-radius: 6px;
  border: none;
  background: var(--series-1);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.9rem;
}

.login-error {
  color: var(--status-critical);
  font-size: 0.82rem;
  margin-top: 0.8rem;
  min-height: 1em;
}

/* Topology page — HUD / "network ops radar" styling. Fixed dark palette
   regardless of the light/dark toggle: this is a schematic readout, not a
   document, and a consistent radar look reads better than switching modes. */
:root {
  --hud-bg-0: #050b14;
  --hud-bg-1: #0a1524;
  --hud-line: rgba(56, 189, 248, 0.14);
  --hud-cyan: #22d3ee;
  --hud-cyan-dim: rgba(34, 211, 238, 0.35);
  --hud-violet: #a78bfa;
  --hud-text: #d6f3fb;
  --hud-text-dim: #7fa3b8;
}

.topology-controls {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.75rem;
  font-size: 0.8rem;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.topology-controls select,
.topology-controls input {
  padding: 0.3rem 0.5rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface-card);
  color: var(--text-primary);
}

.topology-controls #refresh-btn {
  border-color: var(--hud-cyan-dim);
  color: var(--hud-cyan);
}
.topology-controls #refresh-btn:hover {
  background: rgba(34, 211, 238, 0.12);
  border-color: var(--hud-cyan);
}

.topology-controls #host-count {
  margin-left: auto;
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--hud-cyan-dim);
  border-radius: 999px;
  color: var(--hud-cyan);
  background: rgba(34, 211, 238, 0.08);
}

#topology-graph {
  position: relative;
  width: 100%;
  height: 70vh;
  border-radius: 12px;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(34, 211, 238, 0.10), transparent 60%),
    radial-gradient(ellipse at 100% 100%, rgba(167, 139, 250, 0.08), transparent 55%),
    repeating-linear-gradient(0deg, var(--hud-line) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(90deg, var(--hud-line) 0 1px, transparent 1px 40px),
    linear-gradient(160deg, var(--hud-bg-1), var(--hud-bg-0));
  background-size: auto, auto, 100% 80px, 80px 100%, auto;
  border: 1px solid var(--hud-cyan-dim);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.4),
    0 20px 60px rgba(0, 0, 0, 0.45),
    inset 0 0 80px rgba(34, 211, 238, 0.05);
}

/* Corner brackets, purely decorative HUD framing */
#topology-graph::before,
#topology-graph::after {
  content: '';
  position: absolute;
  width: 22px;
  height: 22px;
  border: 2px solid var(--hud-cyan);
  opacity: 0.55;
  pointer-events: none;
  z-index: 2;
}
#topology-graph::before {
  top: 10px;
  left: 10px;
  border-right: none;
  border-bottom: none;
}
#topology-graph::after {
  bottom: 10px;
  right: 10px;
  border-left: none;
  border-top: none;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.85rem;
  font-size: 0.76rem;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

.legend span {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--hud-text-dim);
}

.legend .swatch {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  margin-right: 0.4rem;
  vertical-align: middle;
  box-shadow: 0 0 6px 1px currentColor;
}

#node-detail {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  width: 310px;
  max-height: 50vh;
  overflow: auto;
  background: rgba(10, 21, 36, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid var(--hud-cyan-dim);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 0, 0, 0.3),
    0 0 22px rgba(34, 211, 238, 0.25);
  display: none;
  color: var(--hud-text);
}

#node-detail h4 {
  margin: 0 0 0.6rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(34, 211, 238, 0.25);
  color: var(--hud-cyan);
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
}

#node-detail dl {
  margin: 0;
  font-size: 0.83rem;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

#node-detail dt {
  color: var(--hud-text-dim);
  margin-top: 0.5rem;
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
}

#node-detail dd {
  margin: 0;
  color: var(--hud-text);
  word-break: break-word;
}

#node-detail .close-btn {
  position: absolute;
  top: 0.6rem;
  right: 0.7rem;
  background: none;
  border: none;
  color: var(--hud-text-dim);
  cursor: pointer;
  font-size: 1rem;
}
#node-detail .close-btn:hover {
  color: var(--hud-cyan);
}

/* Container detail/actions modal (Conteneurs tab) */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 1rem;
}

.modal-overlay.open {
  display: flex;
}

.modal-box {
  position: relative;
  width: 100%;
  max-width: 760px;
  max-height: 90vh;
  overflow-y: auto;
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.modal-box h3 {
  margin: 0 0 0.3rem;
  padding-right: 1.5rem;
  word-break: break-word;
}

.modal-box .close-btn {
  position: absolute;
  top: 0.9rem;
  right: 1rem;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.1rem;
}
.modal-box .close-btn:hover {
  color: var(--text-primary);
}

.modal-status {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-transform: capitalize;
  margin-bottom: 1rem;
}

.modal-info {
  display: grid;
  grid-template-columns: minmax(120px, 160px) 1fr;
  align-items: baseline;
  row-gap: 0.55rem;
  column-gap: 1.2rem;
  margin: 0 0 1.1rem;
  font-size: 0.9rem;
}

.modal-info dt {
  color: var(--text-muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.modal-info dd {
  margin: 0;
  color: var(--text-primary);
  word-break: break-word;
}

.modal-actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.action-btn {
  flex: 1;
  min-width: 120px;
  padding: 0.55rem 0.8rem;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  color: #fff;
}

.action-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.action-start {
  background: var(--status-good);
}
.action-start:not(:disabled):hover {
  filter: brightness(1.1);
}

.action-restart {
  background: var(--status-warning);
  color: #2b1c00;
}
.action-restart:not(:disabled):hover {
  filter: brightness(1.08);
}

.action-stop {
  background: var(--status-critical);
}
.action-stop:not(:disabled):hover {
  filter: brightness(1.1);
}

.modal-action-message {
  margin-top: 0.6rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  min-height: 1.1em;
}

.modal-charts {
  margin-top: 1.2rem;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.modal-charts .chart-card canvas {
  max-height: 170px;
}

@media (max-width: 640px) {
  .modal-info {
    grid-template-columns: 1fr;
    row-gap: 0.15rem;
  }
  .modal-info dd {
    margin-bottom: 0.4rem;
  }
  .modal-charts {
    grid-template-columns: 1fr;
  }
}