:root {
  --nm-success: #3fb950;
  --nm-danger: #f85149;
  --nm-warning: #d29922;
  --nm-muted: #8b949e;
  --nm-sidebar-width: 220px;
  --nm-topbar-height: 56px;
  --nm-border: var(--bs-border-color);
}

body {
  background-color: var(--bs-body-bg);
  font-size: 14px;
}

code, .nm-mono {
  font-family: var(--bs-font-monospace);
}

/* ---------- layout ---------- */

.nm-shell {
  display: flex;
  min-height: 100vh;
}

.nm-sidebar {
  width: var(--nm-sidebar-width);
  flex-shrink: 0;
  background-color: var(--bs-tertiary-bg);
  border-right: 1px solid var(--nm-border);
  display: flex;
  flex-direction: column;
}

.nm-sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem;
  font-weight: 600;
  font-size: 1.1rem;
  border-bottom: 1px solid var(--nm-border);
}

.nm-sidebar-nav {
  display: flex;
  flex-direction: column;
  padding: 0.5rem;
  gap: 2px;
}

.nm-nav-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  color: var(--bs-body-color);
  text-decoration: none;
  font-size: 0.9rem;
}

.nm-nav-link:hover {
  background-color: var(--bs-secondary-bg);
}

.nm-nav-link.active {
  background-color: var(--bs-primary);
  color: #fff;
}

.nm-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.nm-topbar {
  height: var(--nm-topbar-height);
  border-bottom: 1px solid var(--nm-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
}

.nm-topbar-title {
  font-weight: 600;
  font-size: 1rem;
}

.nm-topbar-section {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.nm-breadcrumb {
  font-size: 0.78rem;
  color: var(--nm-muted);
}

.nm-content {
  padding: 1.25rem;
  flex: 1;
  overflow-x: auto;
}

/* ---------- components ---------- */

.nm-status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 6px;
}

.nm-status-dot.active { background-color: var(--nm-success); }
.nm-status-dot.inactive { background-color: var(--nm-muted); }

.nm-stat-card {
  background-color: var(--bs-tertiary-bg);
  border: 1px solid var(--nm-border);
  border-radius: 8px;
  padding: 1rem;
}

.nm-stat-card .nm-stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1;
}

.nm-stat-card .nm-stat-label {
  color: var(--nm-muted);
  font-size: 0.8rem;
  margin-top: 0.25rem;
}

.table.nm-table {
  font-size: 0.85rem;
  margin-bottom: 0;
}

.table.nm-table th {
  font-weight: 600;
  color: var(--nm-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.table.nm-table td {
  vertical-align: middle;
}

.nm-table-row-clickable {
  cursor: pointer;
}

.nm-connection-chain {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.nm-connection-endpoint {
  line-height: 1.3;
}

.nm-connection-arrow {
  color: var(--nm-muted);
  flex-shrink: 0;
}

/* ---------- device cards ---------- */

.nm-device-card {
  border-color: var(--nm-border);
  background-color: var(--bs-tertiary-bg);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.nm-device-card:hover {
  border-color: var(--bs-primary);
  box-shadow: 0 0 0 1px var(--bs-primary);
}

.nm-device-title {
  color: var(--bs-body-color);
}

.nm-device-card:hover .nm-device-title {
  color: var(--bs-primary);
}

.nm-device-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background-color: var(--bs-body-bg);
  border: 1px solid var(--nm-border);
  color: var(--nm-muted);
  flex-shrink: 0;
}

.nm-device-stats {
  border: 1px solid var(--nm-border);
  border-radius: 8px;
  background-color: var(--bs-body-bg);
  padding: 0.5rem 0.25rem;
  margin-bottom: 0;
}

.nm-device-stat-value {
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1;
}

.nm-device-stat-label {
  color: var(--nm-muted);
  font-size: 0.7rem;
  margin-top: 0.2rem;
}

.nm-interface-preview li {
  line-height: 1.6;
}

.nm-toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 1080;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.nm-empty-state {
  text-align: center;
  color: var(--nm-muted);
  padding: 2.5rem 1rem;
}

.nm-empty-state .btn {
  margin-top: 0.25rem;
}

.htmx-indicator {
  display: none;
}

.htmx-request .htmx-indicator,
.htmx-request.htmx-indicator {
  display: inline-block;
}

.nm-port-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.1rem 0.45rem;
  font-size: 0.75rem;
  border: 1px solid var(--nm-border);
  border-radius: 6px;
  background-color: var(--bs-body-bg);
  color: var(--bs-body-color);
  white-space: nowrap;
}

.nm-port-chip-name {
  color: var(--bs-primary);
  font-weight: 600;
}

.nm-ports-preview li {
  padding: 0.15rem 0;
}

.nm-ports-preview li + li {
  border-top: 1px dashed var(--nm-border);
}

.nm-port-service {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--bs-body-color);
  line-height: 1.2;
}

.nm-open-btn {
  font-size: 0.75rem;
  line-height: 1;
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  flex-shrink: 0;
}

@media (max-width: 900px) {
  .nm-sidebar {
    width: 64px;
  }

  .nm-sidebar-brand span {
    display: none;
  }

  .nm-nav-link {
    justify-content: center;
  }
}