/* ==========================================================================
   KUBE-Sentinel — Component Styles (Crisp Light Theme Components)
   ========================================================================== */

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-slate);
  border-radius: 16px;
  padding: 22px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  transition: all 0.2s ease;
}
.panel:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  border-color: #cbd5e1;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid #f1f5f9;
}

.panel-title {
  font-size: 0.98rem;
  font-weight: 800;
  color: #0f172a;
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.01em;
}
.panel-title i {
  color: var(--k8s-blue);
}

/* Cluster Topology Canvas Screen */
.canvas-wrapper {
  position: relative;
  width: 100%;
  height: 340px;
  background: #ffffff;
  border-radius: 12px;
  border: 1px solid #cbd5e1;
  overflow: hidden;
  box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.02);
}

#topology-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.topology-grid-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  background-size: 30px 30px;
  background-image: 
    linear-gradient(to right, rgba(2, 132, 199, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(2, 132, 199, 0.06) 1px, transparent 1px);
}

.topology-info-overlay {
  position: absolute;
  top: 12px; left: 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--k8s-blue);
  display: flex;
  gap: 16px;
  background: rgba(255, 255, 255, 0.95);
  padding: 6px 14px;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* Cluster Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.metric-card {
  background: #ffffff;
  border: 1px solid var(--border-slate);
  border-radius: 14px;
  padding: 18px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
}

.metric-card.pods { border-left: 4px solid var(--k8s-blue); }
.metric-card.latency { border-left: 4px solid var(--purple-ebpf); }
.metric-card.uptime { border-left: 4px solid var(--healthy-green); }
.metric-card.chaos { border-left: 4px solid var(--warning-amber); }

.metric-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.metric-label {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.metric-value-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.metric-value {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1;
  color: #0f172a;
}
.metric-unit {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-weight: 600;
}

/* Chaos Monkey Experiment Cards */
.chaos-experiments-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 10px;
}

.chaos-card {
  background: #f8fafc;
  border: 1px solid var(--border-slate);
  border-radius: 12px;
  padding: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.chaos-card:hover {
  border-color: var(--warning-amber);
  background: #fffbeb;
  transform: translateY(-1px);
}
.chaos-card.active {
  border-color: var(--crash-red);
  background: #fef2f2;
}

.chaos-title {
  font-size: 0.85rem;
  font-weight: 800;
  color: #0f172a;
  display: flex;
  align-items: center;
  gap: 8px;
}
.chaos-desc {
  font-size: 0.74rem;
  color: var(--text-muted);
  margin-top: 4px;
  line-height: 1.4;
}

/* Pod Mesh Grid */
.pod-mesh-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 10px;
}

.pod-node {
  background: #ffffff;
  border: 1px solid var(--border-slate);
  border-radius: 10px;
  padding: 12px;
  font-size: 0.8rem;
  transition: all 0.2s ease;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}
.pod-node.running {
  border-left: 4px solid var(--healthy-green);
}
.pod-node.crashed {
  border-left: 4px solid var(--crash-red);
  background: #fef2f2;
  animation: pulse-crash 1.5s infinite;
}

@keyframes pulse-crash {
  0%, 100% { border-color: rgba(220, 38, 38, 0.4); }
  50% { border-color: var(--crash-red); }
}

.pod-name {
  font-family: var(--font-mono);
  font-weight: 800;
  color: #0f172a;
}
.pod-status-text {
  font-size: 0.74rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* eBPF Packet Trace Log */
.trace-log-box {
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  height: 170px;
  overflow-y: auto;
  margin-top: 10px;
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.5);
}

.trace-line {
  margin-bottom: 4px;
  color: #94a3b8;
}
.trace-line .span-ok { color: #34d399; font-weight:700; }
.trace-line .span-warn { color: #fbbf24; font-weight:700; }
.trace-line .span-err { color: #f87171; font-weight:700; }

/* Toasts */
.toast-container {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: #ffffff;
  border: 1px solid var(--border-k8s);
  border-left: 5px solid var(--k8s-blue);
  border-radius: 12px;
  padding: 14px 20px;
  color: #0f172a;
  font-size: 0.85rem;
  font-weight: 700;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slide-in 0.3s ease;
}

@keyframes slide-in {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}