/* Diagram System Styles */

:root {
  --nd-bg: #ffffff;
  --nd-text: #1f2937;
  --nd-text-muted: #6b7280;
  --nd-border: #e5e7eb;
  --nd-node-bg: #f9fafb;
  --nd-node-bg-hover: #f3f4f6;
  --nd-accent: #0ea5e9;
  --nd-accent-light: #e0f2fe;
  --nd-line: #d1d5db;
  --nd-shadow: 0 4px 6px rgba(0, 0, 0, 0.07), 0 10px 13px rgba(0, 0, 0, 0.05);
  --nd-shadow-lg: 0 20px 25px rgba(0, 0, 0, 0.1), 0 8px 15px rgba(0, 0, 0, 0.05);

  /* Semantic colors */
  --nd-internet: #a855f7;
  --nd-cloudflare: #ea580c;
  --nd-firewall: #ef4444;
  --nd-proxy: #06b6d4;
  --nd-auth: #6366f1;
  --nd-database: #0284c7;
  --nd-cache: #f59e0b;
  --nd-storage: #22c55e;
  --nd-ai: #8b5cf6;
  --nd-media: #ec4899;
  --nd-docker: #2496ed;
}

@media (prefers-color-scheme: dark) {
  :root {
    --nd-bg: #0f172a;
    --nd-text: #f1f5f9;
    --nd-text-muted: #94a3b8;
    --nd-border: #334155;
    --nd-node-bg: #1e293b;
    --nd-node-bg-hover: #293548;
    --nd-accent: #38bdf8;
    --nd-accent-light: #082f49;
    --nd-line: #475569;
    --nd-shadow: 0 4px 6px rgba(0, 0, 0, 0.3), 0 10px 13px rgba(0, 0, 0, 0.2);
    --nd-shadow-lg: 0 20px 25px rgba(0, 0, 0, 0.4), 0 8px 15px rgba(0, 0, 0, 0.2);

    --nd-internet: #d8b4fe;
    --nd-cloudflare: #fed7aa;
    --nd-firewall: #fca5a5;
    --nd-proxy: #a5f3fc;
    --nd-auth: #a5b4fc;
    --nd-database: #7dd3fc;
    --nd-cache: #fcd34d;
    --nd-storage: #86efac;
    --nd-ai: #d8b4fe;
    --nd-media: #f472b6;
    --nd-docker: #60a5fa;
  }
}

.nd-diagram {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--nd-text);
  padding: 24px;
  border: 1px solid var(--nd-border);
  border-radius: 8px;
  background: var(--nd-bg);
  overflow-x: auto;
}

.nd-diagram::-webkit-scrollbar {
  height: 6px;
}

.nd-diagram::-webkit-scrollbar-track {
  background: transparent;
}

.nd-diagram::-webkit-scrollbar-thumb {
  background: var(--nd-border);
  border-radius: 3px;
}

/* === Layers === */

.nd-layer {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto;
  padding: 12px 0;
}

.nd-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* === Nodes === */

.nd-node {
  padding: 12px 16px;
  border: 2px solid var(--nd-border);
  border-radius: 6px;
  background: var(--nd-node-bg);
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 14px;
  font-weight: 500;
  text-align: center;
  user-select: none;
  min-width: 100px;
}

.nd-node:hover {
  background: var(--nd-node-bg-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.nd-node.nd-wide {
  width: 100%;
  max-width: 800px;
}

.nd-node-label {
  display: block;
  font-size: 12px;
  font-weight: 400;
  color: var(--nd-text-muted);
  margin-top: 4px;
}

/* Semantic node colors */
.nd-node.nd-internet { border-color: var(--nd-internet); }
.nd-node.nd-cloudflare { border-color: var(--nd-cloudflare); }
.nd-node.nd-firewall { border-color: var(--nd-firewall); }
.nd-node.nd-proxy { border-color: var(--nd-proxy); }
.nd-node.nd-auth { border-color: var(--nd-auth); }
.nd-node.nd-database { border-color: var(--nd-database); }
.nd-node.nd-cache { border-color: var(--nd-cache); }
.nd-node.nd-storage { border-color: var(--nd-storage); }
.nd-node.nd-ai { border-color: var(--nd-ai); }
.nd-node.nd-media { border-color: var(--nd-media); }
.nd-node.nd-docker { border-color: var(--nd-docker); }

/* === Service Grid === */

.nd-grid {
  display: grid;
  gap: 12px;
}

.nd-service {
  padding: 10px;
  border-left: 4px solid var(--nd-border);
  border-radius: 4px;
  background: var(--nd-node-bg);
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 13px;
  font-weight: 500;
  text-align: center;
  user-select: none;
}

.nd-service:hover {
  background: var(--nd-node-bg-hover);
  transform: translateX(2px);
}

.nd-service.protected {
  border-left-color: var(--nd-auth);
}

.nd-service.direct {
  border-left-color: var(--nd-cloudflare);
}

/* === Service Group Headers === */

.nd-service-group-title {
  font-size: 10px !important;
  font-weight: 700 !important;
  letter-spacing: 0.06em !important;
  color: var(--nd-text-muted) !important;
  text-transform: uppercase !important;
  margin-bottom: 6px !important;
  display: block !important;
  line-height: 1.2 !important;
  padding: 0 !important;
}

/* === Connections === */

.nd-connection {
  position: relative;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 8px 0;
}

.nd-line {
  width: 2px;
  height: 100%;
  background: var(--nd-line);
  position: relative;
}

.nd-line.animated::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--nd-accent);
  border-radius: 50%;
  top: -4px;
  left: 50%;
  transform: translateX(-50%);
  animation: nd-flow-down 1.5s ease-in-out infinite;
}

@keyframes nd-flow-down {
  0% {
    top: -4px;
    opacity: 1;
  }
  100% {
    top: 100%;
    opacity: 0;
  }
}

/* === Legend === */

.nd-legend {
  display: flex;
  gap: 24px;
  justify-content: center;
  padding: 16px 0;
  margin-top: 16px;
  flex-wrap: wrap;
  font-size: 13px;
}

.nd-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nd-legend-color {
  width: 12px;
  height: 12px;
  border-left: 4px solid var(--nd-border);
  border-radius: 2px;
}

.nd-legend-color.protected {
  border-left-color: var(--nd-auth);
}

.nd-legend-color.direct {
  border-left-color: var(--nd-cloudflare);
}

/* === Tooltip === */

.nd-tooltip {
  position: fixed;
  background: var(--nd-node-bg);
  border: 1px solid var(--nd-border);
  border-radius: 6px;
  padding: 12px;
  font-size: 13px;
  z-index: 1000;
  max-width: 280px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.nd-tooltip.visible {
  opacity: 1;
  pointer-events: auto;
}

.nd-tooltip-title {
  font-weight: 600;
  color: var(--nd-text);
  margin-bottom: 6px;
}

.nd-tooltip-desc {
  color: var(--nd-text-muted);
  line-height: 1.4;
}

/* === Service Groups Container === */

.nd-service-groups {
  margin: 16px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nd-service-group {
  display: flex;
  flex-direction: column;
}

/* === Tunnel Diagram === */

.nd-tunnel-simple {
  min-height: 320px;
  background: linear-gradient(135deg, var(--nd-accent-light) 0%, transparent 100%);
  border-radius: 8px;
  padding: 32px;
}

.nd-tunnel-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin: 24px 0;
}

.nd-tunnel-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px 16px;
  min-width: 110px;
  text-align: center;
  background: var(--nd-node-bg);
  border: 2px solid var(--nd-border);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--nd-shadow);
  position: relative;
  overflow: hidden;
}

.nd-tunnel-node::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.nd-tunnel-node:hover {
  background: var(--nd-node-bg-hover);
  transform: translateY(-4px);
  box-shadow: var(--nd-shadow-lg);
  border-color: var(--nd-accent);
}

.nd-tunnel-node:hover::before {
  opacity: 1;
}

.nd-tunnel-node.nd-tunnel-daemon {
  border-color: var(--nd-cloudflare);
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.05) 0%, transparent 100%);
}

.nd-tunnel-node.nd-tunnel-daemon:hover {
  border-color: var(--nd-cloudflare);
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.1) 0%, transparent 100%);
}

.nd-tunnel-node.nd-tunnel-edge {
  border-color: var(--nd-cloudflare);
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.05) 0%, transparent 100%);
}

.nd-tunnel-node.nd-tunnel-edge:hover {
  border-color: var(--nd-cloudflare);
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.1) 0%, transparent 100%);
}

.nd-tunnel-icon {
  font-size: 40px;
  line-height: 1;
  margin-bottom: 12px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
  animation: nd-bounce 3s ease-in-out infinite;
}

@keyframes nd-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.nd-tunnel-node:hover .nd-tunnel-icon {
  animation: none;
  transform: scale(1.15);
}

.nd-tunnel-name {
  font-weight: 700;
  font-size: 14px;
  color: var(--nd-text);
}

.nd-tunnel-sub {
  font-size: 12px;
  color: var(--nd-text-muted);
  margin-top: 6px;
  font-weight: 400;
}

.nd-tunnel-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  min-height: 60px;
  position: relative;
}

.nd-tunnel-arrow-left::before {
  content: '←';
  font-size: 24px;
  color: var(--nd-text-muted);
  animation: nd-arrow-left 1.5s ease-in-out infinite;
}

.nd-tunnel-arrow-right::before {
  content: '→';
  font-size: 24px;
  color: var(--nd-text-muted);
  animation: nd-arrow-right 1.5s ease-in-out infinite;
}

@keyframes nd-arrow-left {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(-4px); }
}

@keyframes nd-arrow-right {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(4px); }
}

.nd-tunnel-main {
  min-width: 140px;
  flex-direction: column;
}

.nd-tunnel-line-h {
  position: relative;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--nd-line) 0%, var(--nd-accent) 50%, var(--nd-line) 100%);
  border-radius: 2px;
  margin: 12px 0;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.nd-tunnel-packet {
  position: absolute;
  width: 10px;
  height: 10px;
  background: var(--nd-accent);
  border-radius: 50%;
  left: -5px;
  top: 50%;
  transform: translateY(-50%);
  animation: nd-flow-right 2.5s ease-in-out infinite;
  box-shadow: 0 0 8px var(--nd-accent);
}

@keyframes nd-flow-right {
  0% {
    left: -5px;
    opacity: 1;
  }
  100% {
    left: calc(100% + 5px);
    opacity: 0;
  }
}

.nd-tunnel-label-above {
  font-size: 12px;
  font-weight: 700;
  color: var(--nd-text);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nd-tunnel-label-below {
  font-size: 12px;
  color: var(--nd-text-muted);
  margin-top: 6px;
}

.nd-tunnel-caption {
  text-align: center;
  font-size: 13px;
  color: var(--nd-text-muted);
  margin-top: 20px;
  padding-top: 20px;
  border-top: 2px solid var(--nd-border);
  line-height: 1.6;
}

.nd-tunnel-caption strong {
  color: var(--nd-text);
  font-weight: 700;
}

/* === Role Structure Diagram === */

.nd-section-title {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--nd-text-muted);
  text-transform: uppercase;
  margin-bottom: 20px;
  display: block;
}

.nd-role-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  margin: 20px 0;
}

.nd-role-tree {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 13px;
  background: var(--nd-node-bg);
  padding: 16px;
  border-radius: 12px;
  border: 2px solid var(--nd-border);
  box-shadow: var(--nd-shadow);
  transition: all 0.3s ease;
}

.nd-role-tree:hover {
  box-shadow: var(--nd-shadow-lg);
  border-color: var(--nd-proxy);
}

.nd-tree-root {
  font-weight: 700;
  color: var(--nd-text);
  padding: 10px 12px;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.1) 0%, transparent 100%);
  border-left: 4px solid var(--nd-proxy);
  border-radius: 6px;
  margin-bottom: 4px;
}

.nd-tree-item {
  padding: 8px 12px;
  color: var(--nd-text);
  cursor: pointer;
  transition: all 0.2s ease;
  border-radius: 6px;
  margin-left: 8px;
  border-left: 2px solid var(--nd-border);
  font-weight: 500;
}

.nd-tree-item:hover {
  background: var(--nd-node-bg-hover);
  padding-left: 16px;
  border-left-color: var(--nd-accent);
  color: var(--nd-accent);
}

.nd-tree-item[data-info] {
  position: relative;
}

.nd-role-purposes {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.nd-purpose-item {
  display: flex;
  gap: 14px;
  padding: 14px 16px;
  background: var(--nd-node-bg);
  border-radius: 10px;
  border-left: 4px solid var(--nd-proxy);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--nd-shadow);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.nd-purpose-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.3s ease;
}

.nd-purpose-item:hover {
  background: var(--nd-node-bg-hover);
  transform: translateX(6px);
  box-shadow: var(--nd-shadow-lg);
  border-left-color: var(--nd-accent);
}

.nd-purpose-item:hover::before {
  left: 100%;
}

.nd-purpose-dir {
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-weight: 700;
  color: var(--nd-proxy);
  min-width: 90px;
  font-size: 13px;
}

.nd-purpose-desc {
  color: var(--nd-text-muted);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.5;
}

/* === Pipeline Diagram === */

.nd-pipeline {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin: 24px 0;
  overflow-x: auto;
  padding-bottom: 16px;
  background: linear-gradient(90deg, var(--nd-accent-light) 0%, transparent 50%, var(--nd-accent-light) 100%);
  border-radius: 8px;
  padding: 20px;
}

.nd-pipeline-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 130px;
  padding: 20px 12px;
  background: var(--nd-node-bg);
  border: 2px solid var(--nd-border);
  border-radius: 12px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  box-shadow: var(--nd-shadow);
  flex-shrink: 0;
}

.nd-pipeline-stage::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--nd-accent), transparent);
  border-radius: 12px 12px 0 0;
  transform: scaleX(0);
  transition: transform 0.3s ease;
  transform-origin: center;
}

.nd-pipeline-stage:hover {
  background: var(--nd-node-bg-hover);
  transform: translateY(-6px) scale(1.02);
  box-shadow: var(--nd-shadow-lg);
  border-color: var(--nd-accent);
}

.nd-pipeline-stage:hover::after {
  transform: scaleX(1);
}

.nd-pipeline-stage.nd-stage-wide {
  min-width: 150px;
}

.nd-pipeline-stage.nd-stage-final {
  border-color: var(--nd-cloudflare);
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.05) 0%, transparent 100%);
}

.nd-pipeline-stage.nd-stage-final:hover {
  border-color: var(--nd-cloudflare);
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.1) 0%, transparent 100%);
}

.nd-stage-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--nd-accent), #0284c7);
  color: white;
  border-radius: 50%;
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 12px;
  box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
  animation: nd-pulse 2s ease-in-out infinite;
}

@keyframes nd-pulse {
  0%, 100% {
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.5);
    transform: scale(1.05);
  }
}

.nd-stage-icon {
  font-size: 28px;
  line-height: 1;
  margin-bottom: 10px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
  transition: transform 0.3s ease;
}

.nd-pipeline-stage:hover .nd-stage-icon {
  transform: scale(1.2) rotateY(10deg);
}

.nd-stage-name {
  font-weight: 700;
  font-size: 14px;
  color: var(--nd-text);
  margin-bottom: 10px;
}

.nd-stage-tasks {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
}

.nd-task {
  color: var(--nd-text-muted);
  line-height: 1.4;
  font-weight: 500;
}

.nd-pipeline-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  color: var(--nd-text-muted);
  font-size: 24px;
  min-height: 60px;
  animation: nd-arrow-pulse 1.5s ease-in-out infinite;
}

@keyframes nd-arrow-pulse {
  0%, 100% {
    color: var(--nd-text-muted);
    transform: translateX(0);
  }
  50% {
    color: var(--nd-accent);
    transform: translateX(2px);
  }
}

.nd-pipeline-deps {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 2px solid var(--nd-border);
  flex-wrap: wrap;
  font-size: 13px;
  background: linear-gradient(135deg, var(--nd-accent-light) 0%, transparent 100%);
  border-radius: 8px;
}

.nd-deps-label {
  font-weight: 700;
  color: var(--nd-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 11px;
}

.nd-dep-tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: linear-gradient(135deg, var(--nd-accent), #0284c7);
  color: white;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(14, 165, 233, 0.3);
  transition: all 0.2s ease;
  cursor: default;
}

.nd-dep-tag:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(14, 165, 233, 0.4);
}

/* === Responsive === */

@media (max-width: 600px) {
  .nd-diagram {
    padding: 16px;
  }

  .nd-node {
    min-width: 80px;
    padding: 10px 12px;
    font-size: 13px;
  }

  .nd-service {
    font-size: 12px;
    padding: 8px;
  }

  .nd-legend {
    gap: 12px;
    font-size: 12px;
  }

  .nd-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}