/* ==========================================================================
   PacketGuard - Network Firewall Simulator Style System
   Strict Single-Page Fit (100vh, Zero Outer Scroll, Zero Navbar)
   ========================================================================== */

:root {
  --bg-app: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-card-subtle: #F9FAFB;
  --bg-hover: #F1F5F9;
  --bg-active: #E2E8F0;

  --border-light: #E2E8F0;
  --border-subtle: #EDF2F7;
  --border-focus: #3B82F6;

  --text-main: #0F172A;
  --text-muted: #64748B;
  --text-dim: #94A3B8;

  --color-primary: #2563EB;
  --color-primary-hover: #1D4ED8;
  --color-primary-light: #EFF6FF;

  --color-success: #10B981;
  --color-success-bg: #ECFDF5;
  --color-success-border: #A7F3D0;

  --color-danger: #EF4444;
  --color-danger-bg: #FEF2F2;
  --color-danger-border: #FECACA;

  --color-warning: #F59E0B;
  --color-warning-bg: #FFFBEB;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-card: 0 1px 3px 0 rgba(0, 0, 0, 0.04), 0 1px 2px -1px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-modal: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

  --radius-sm: 5px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;
}

/* Base Reset & Strict 100vh Single-Page Fit */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100vh;
  max-height: 100vh;
  overflow: hidden;
  font-family: var(--font-sans);
  background-color: var(--bg-app);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
}

body {
  display: flex;
  flex-direction: column;
}

/* Sleek Scrollbars for Inner Lists */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #CBD5E1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94A3B8;
}

/* ==========================================================================
   Dashboard Grid Layout (100vh Full Viewport, Strict Fit, Zero Outer Scroll)
   ========================================================================== */
.dashboard-container {
  display: grid;
  grid-template-columns: 285px minmax(0, 1fr) 330px;
  grid-template-rows: minmax(0, 1fr);
  gap: 8px;
  padding: 8px 10px;
  height: 100vh;
  height: 100dvh;
  max-height: 100vh;
  max-height: 100dvh;
  width: 100%;
  overflow: hidden;
  box-sizing: border-box;
}

/* General Panel Styling */
.panel {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
  height: 100%;
}

.panel-header {
  padding: 6px 10px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 8px;
  background: #FFFFFF;
  flex-shrink: 0;
}

.step-badge {
  width: 18px;
  height: 18px;
  background: var(--color-primary);
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  flex-shrink: 0;
}

.panel-title-group {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.panel-title-group h2 {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.15;
  white-space: nowrap;
}

.panel-title-group p {
  font-size: 0.65rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ==========================================================================
   Column 1: Request Crafter
   ========================================================================== */
.panel-request-crafter {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  overflow: hidden;
}

.tab-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 4px 8px;
  gap: 4px;
  background: var(--bg-card-subtle);
  border-bottom: 1px solid var(--border-light);
  flex-shrink: 0;
}

.tab-btn {
  padding: 3px 0;
  border: 1px solid transparent;
  background: transparent;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
}

.tab-btn.active {
  background: #FFFFFF;
  color: var(--color-primary);
  border-color: var(--border-light);
  box-shadow: var(--shadow-sm);
}

.presets-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-auto-rows: 38px;
  align-content: start;
  gap: 5px;
  padding: 6px 8px;
  overflow-y: auto;
  flex: 0 0 auto;
  max-height: 130px;
  border-bottom: 1px solid var(--border-light);
  box-sizing: border-box;
}

.preset-card {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 3px 6px;
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-align: left;
  transition: all 0.15s ease;
  min-width: 0;
  height: 38px;
  min-height: 38px;
  max-height: 38px;
  box-sizing: border-box;
  overflow: hidden;
  flex-shrink: 0;
}

.preset-card:hover {
  background: var(--bg-hover);
  border-color: #CBD5E1;
}

.preset-card.active {
  background: var(--color-primary-light);
  border-color: #93C5FD;
}

.preset-icon {
  width: 22px;
  height: 22px;
  min-width: 22px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.preset-icon svg {
  width: 13px;
  height: 13px;
}

.globe-icon { background: #EFF6FF; color: #2563EB; }
.term-icon { background: #F1F5F9; color: #475569; }
.db-icon { background: #FAF5FF; color: #9333EA; }
.sql-icon { background: #F0FDF4; color: #16A34A; }
.scan-icon { background: #FFF7ED; color: #EA580C; }
.code-icon { background: #F8FAFC; color: #334155; }
.block-site-icon { background: #FEF2F2; color: #DC2626; }
.allow-site-icon { background: #ECFDF5; color: #059669; }

.preset-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.15;
  min-width: 0;
  flex: 1;
  overflow: hidden;
  gap: 1px;
}

.preset-name {
  font-size: 0.71rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.15;
}

.preset-sub {
  font-size: 0.58rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.1;
}

/* Request Form */
.request-form {
  padding: 6px 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

.form-row-compact {
  display: flex;
  gap: 6px;
}

.flex-1 { flex: 1; }

.form-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.form-group label {
  font-size: 0.64rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 6px;
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  outline: none;
  transition: border-color 0.15s ease;
  height: 25px;
  line-height: 19px;
}

.form-group textarea {
  height: 25px;
  min-height: 25px;
  resize: none;
  white-space: nowrap;
  overflow: hidden;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15);
}

/* Form Action Buttons (Side-by-Side Responsive Row) */
.form-actions-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px;
  margin-top: 2px;
  flex-shrink: 0;
}

.btn-primary {
  background: var(--color-primary);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-md);
  padding: 5px 8px;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  box-shadow: 0 1px 2px rgba(37, 99, 235, 0.25);
  transition: all 0.15s ease;
  white-space: nowrap;
}

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

.send-btn {
  margin-top: 0;
  width: 100%;
}

.inspect-browser-btn {
  background: #F8FAFC;
  border: 1px solid #CBD5E1;
  color: #334155;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 5px 8px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.15s ease;
  margin-top: 0;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  white-space: nowrap;
}

.inspect-browser-btn:hover {
  background: #E2E8F0;
  color: #0F172A;
  border-color: #94A3B8;
}

/* Packet Rate Widget */
.packet-rate-widget {
  margin: 4px 8px 6px 8px;
  padding: 4px 8px;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  height: 34px;
}

.rate-left {
  display: flex;
  align-items: center;
  gap: 6px;
}

.rate-icon {
  color: var(--color-primary);
  display: flex;
}

.rate-text {
  display: flex;
  flex-direction: column;
}

.rate-label {
  font-size: 0.62rem;
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.1;
}

.rate-value {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-main);
  font-family: var(--font-mono);
  line-height: 1.1;
}

.rate-sparkline {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 18px;
  width: 48px;
}

.spark-bar {
  flex: 1;
  background: #93C5FD;
  border-radius: 2px 2px 0 0;
  transition: height 0.3s ease;
}

.spark-bar:last-child {
  background: var(--color-primary);
}

/* ==========================================================================
   Column 2: Center (Topology & Timeline)
   ========================================================================== */
.panel-center {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  min-height: 0;
}

/* Topology Panel */
.panel-topology {
  flex: 1.15;
  min-height: 0;
  position: relative;
  display: flex;
  flex-direction: column;
}

.topology-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 10px;
  gap: 6px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  overflow: hidden;
}

.header-right-controls {
  display: flex;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
}

.topology-legend {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--text-muted);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.legend-dot {
  width: 6.5px;
  height: 6.5px;
  border-radius: 50%;
}

.dot-allowed { background: var(--color-success); }
.dot-blocked { background: var(--color-danger); }
.dot-transit { background: var(--color-primary); }

.status-indicator {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-main);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-success);
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
  animation: pulse-green 2s infinite ease-in-out;
}

.status-indicator.paused .status-dot {
  background-color: var(--color-warning);
  box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
  animation: none;
}

@keyframes pulse-green {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.15); opacity: 0.8; }
}

.nav-btn {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 3px 7px;
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.15s ease;
}

.nav-btn:hover {
  background: var(--bg-hover);
}

.play-pause-btn {
  width: 25px;
  height: 25px;
  padding: 0;
  border-radius: 50%;
  background: var(--color-primary);
  color: #FFFFFF;
  border: none;
  justify-content: center;
}

.play-pause-btn:hover {
  background: var(--color-primary-hover);
}

.sim-timer {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  padding: 3px 6px;
  background: var(--bg-card-subtle);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}

/* Topology Stage Canvas */
.topology-stage {
  position: relative;
  width: 100%;
  flex: 1;
  min-height: 0;
  background: radial-gradient(#CBD5E1 0.75px, transparent 0.75px);
  background-size: 18px 18px;
  overflow: hidden;
}

.topology-cables {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.topology-cables path {
  stroke-dasharray: 5, 4;
}

.cable-active {
  stroke: var(--color-primary) !important;
  stroke-width: 2.5 !important;
  animation: cable-flow 0.8s linear infinite;
}

@keyframes cable-flow {
  from { stroke-dashoffset: 18; }
  to { stroke-dashoffset: 0; }
}

/* Node Elements Positioning (generous vertical spacing, zero overlap) */
.topo-node {
  position: absolute;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 5;
  user-select: none;
  cursor: pointer;
}

/* Center Infrastructure Spine */
#nodeInternet, .node-internet { left: 50%; top: 9%; }
#nodeRouter,   .node-router   { left: 50%; top: 25%; }
#nodeFirewall, .node-firewall { left: 50%; top: 47%; }
#nodeSwitch,   .node-switch   { left: 50%; top: 74%; }

/* Multi-Client Positions (Left Side - Symmetrical Fan Architecture) */
#nodeClientA, .node-client-a { left: 14%; top: 48%; }
#nodeClientB, .node-client-b { left: 30%; top: 64%; }
#nodeClientC, .node-client-c { left: 14%; top: 88%; }

/* Multi-Server Positions (Right Side - DMZ Tier Architecture) */
#nodeServerWeb,     .node-server-web     { left: 86%; top: 48%; }
#nodeServerDb,      .node-server-db      { left: 70%; top: 64%; }
#nodeServerBastion, .node-server-bastion { left: 86%; top: 88%; }

/* Selected Node Indicator & Pulse */
.topo-node.selected-node .device-laptop,
.topo-node.selected-node .device-server {
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.45), 0 4px 12px rgba(37, 99, 235, 0.2);
  border-radius: 4px;
}

.node-active-pulse {
  animation: node-pulse-anim 0.8s ease-in-out;
}

@keyframes node-pulse-anim {
  0% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-50%, -50%) scale(1.15); filter: drop-shadow(0 0 8px #3B82F6); }
  100% { transform: translate(-50%, -50%) scale(1); }
}

/* Badges for Clients and Servers - Perfectly centered above device */
.client-badge, .server-badge {
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.58rem;
  font-weight: 700;
  padding: 1.5px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  z-index: 10;
  white-space: nowrap;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
  line-height: 1.1;
}

.badge-admin { background: #2563EB; color: white; }
.badge-dev   { background: #0EA5E9; color: white; }
.badge-rogue { background: #DC2626; color: white; }

.badge-web     { background: #10B981; color: white; }
.badge-db      { background: #F59E0B; color: white; }
.badge-bastion { background: #8B5CF6; color: white; }

/* Rogue Laptop Custom Look */
.device-rogue .laptop-screen { border-color: #EF4444 !important; background: #450A0A !important; }
.device-rogue .laptop-display { background: #1C1917 !important; }
.device-rogue .screen-prompt { color: #EF4444 !important; }
.device-rogue .laptop-base { background: #7F1D1D !important; }

/* Server Rack LED Color Variants */
.rack-led.amber { background: #F59E0B !important; box-shadow: 0 0 4px #F59E0B !important; }
.rack-led.purple { background: #A855F7 !important; box-shadow: 0 0 4px #A855F7 !important; }

.node-meta {
  margin-top: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  pointer-events: none;
  white-space: nowrap;
}

.node-name {
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.15;
}

.node-ip {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
}

/* Device: Client Laptop */
.device-laptop {
  position: relative;
  width: 50px;
  height: 38px;
}

.laptop-screen {
  width: 42px;
  height: 28px;
  background: #1E293B;
  border: 1.5px solid #64748B;
  border-radius: 3px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.laptop-display {
  width: 35px;
  height: 21px;
  background: #0F172A;
  border-radius: 2px;
  padding: 2px 3px;
}

.screen-prompt {
  color: #38BDF8;
  font-family: var(--font-mono);
  font-size: 7px;
}

.laptop-base {
  width: 50px;
  height: 5px;
  background: #94A3B8;
  border-radius: 0 0 3px 3px;
  border-top: 1px solid #CBD5E1;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.node-status-dot {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-success);
  border: 1.5px solid #FFFFFF;
}

/* Device: Switch */
.device-switch {
  width: 68px;
  height: 23px;
  background: #334155;
  border-radius: 4px;
  border: 1px solid #475569;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.switch-ports {
  display: flex;
  gap: 4px;
}

.switch-port {
  width: 5px;
  height: 5px;
  background: #0284C7;
  border-radius: 1px;
  animation: blink-port 2s infinite alternate;
}

.switch-port:nth-child(even) {
  animation-delay: 0.5s;
}

@keyframes blink-port {
  0% { background: #0284C7; }
  100% { background: #38BDF8; }
}

/* Device: Server Rack */
.device-server {
  position: relative;
  width: 46px;
  height: 46px;
  background: #1E293B;
  border-radius: 5px;
  border: 1px solid #475569;
  padding: 3px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
}

.server-rack {
  display: flex;
  flex-direction: column;
  gap: 2.5px;
  height: 100%;
}

.rack-unit {
  flex: 1;
  background: #0F172A;
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 3px;
}

.rack-led {
  width: 4px;
  height: 4px;
  border-radius: 50%;
}

.rack-led.green { background: #10B981; }
.rack-led.blue { background: #38BDF8; }

.rack-drive {
  width: 18px;
  height: 2px;
  background: #334155;
  border-radius: 1px;
}

/* Device: Firewall */
.firewall-shield-box {
  width: 48px;
  height: 48px;
  background: #FFFFFF;
  border: 2px solid #EF4444;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 12px rgba(239, 68, 68, 0.2);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.brick-pattern {
  position: absolute;
  inset: 0;
  background: 
    repeating-linear-gradient(0deg, #FEE2E2 0, #FEE2E2 1px, transparent 1px, transparent 8px),
    repeating-linear-gradient(90deg, #FEE2E2 0, #FEE2E2 1px, transparent 1px, transparent 12px);
  opacity: 0.7;
}

.firewall-badge {
  position: relative;
  z-index: 2;
  display: flex;
}

.firewall-shield-box.glow-allow {
  border-color: #10B981;
  box-shadow: 0 0 18px rgba(16, 185, 129, 0.5);
  transform: scale(1.05);
}

.firewall-shield-box.glow-block {
  border-color: #EF4444;
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.65);
  animation: shake 0.35s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* Blocked Deflection Card Badge */
.blocked-deflection-card {
  position: absolute;
  left: 63%;
  top: 36%;
  background: #FFFFFF;
  border: 1px solid var(--color-danger);
  border-radius: var(--radius-md);
  padding: 6px 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.22);
  z-index: 10;
  transition: all 0.25s ease;
  pointer-events: none;
  white-space: nowrap;
}

.blocked-deflection-card.hidden {
  opacity: 0;
  transform: translateY(6px);
  visibility: hidden;
}

.deflection-icon {
  display: flex;
}

.deflection-text {
  display: flex;
  flex-direction: column;
}

.deflect-status {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-danger);
  line-height: 1.1;
}

.deflect-reason {
  font-size: 0.67rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Device: Router */
.device-router {
  position: relative;
  width: 44px;
  height: 20px;
  background: #64748B;
  border-radius: 4px;
  border: 1px solid #475569;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.router-body {
  display: flex;
  gap: 3px;
}

.router-led {
  width: 3.5px;
  height: 3.5px;
  border-radius: 50%;
  background: #38BDF8;
}

.router-antenna {
  position: absolute;
  top: -10px;
  width: 2px;
  height: 10px;
  background: #475569;
  border-radius: 1px;
}

.router-antenna.left { left: 7px; transform: rotate(-10deg); }
.router-antenna.right { right: 7px; transform: rotate(10deg); }

/* Node: Internet Cloud */
.node-internet .node-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-primary);
}

/* ==========================================================================
   Animated Packet Flight Elements (Deliberate, Smooth Pacing)
   ========================================================================== */
.packet-flight-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 8;
}

.packet-pill {
  position: absolute;
  transform: translate(-50%, -50%);
  padding: 4px 9px;
  border-radius: var(--radius-full);
  font-size: 0.68rem;
  font-weight: 600;
  font-family: var(--font-mono);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.14);
  white-space: nowrap;
  pointer-events: auto;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  z-index: 15;
}

.packet-pill:hover {
  transform: translate(-50%, -50%) scale(1.12);
  box-shadow: 0 5px 12px rgba(0, 0, 0, 0.22);
}

.packet-pill.transit {
  background: #DBEAFE;
  color: #1D4ED8;
  border: 1px solid #93C5FD;
}

.packet-pill.inspecting {
  background: #FEF3C7;
  color: #92400E;
  border: 1px solid #FCD34D;
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.4);
  animation: pulse-inspect 0.6s infinite alternate ease-in-out;
}

@keyframes pulse-inspect {
  from { transform: translate(-50%, -50%) scale(1); }
  to { transform: translate(-50%, -50%) scale(1.1); }
}

.packet-pill.allowed {
  background: #D1FAE5;
  color: #065F46;
  border: 1px solid #6EE7B7;
}

.packet-pill.blocked {
  background: #FEE2E2;
  color: #991B1B;
  border: 1px solid #FCA5A5;
}

/* ==========================================================================
   Section 3: Packet Flow Timeline Table
   ========================================================================== */
.panel-timeline {
  flex: 0.85;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.timeline-header {
  justify-content: space-between;
  padding: 5px 10px;
}

.timeline-counter {
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-card-subtle);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}

.table-container {
  overflow-x: auto;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

.timeline-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.72rem;
  text-align: left;
}

.timeline-table th {
  background: var(--bg-card-subtle);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 4px 8px;
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 2;
}

.timeline-table td {
  padding: 3px 8px;
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-main);
  cursor: pointer;
  line-height: 1.25;
}

.timeline-table tr:hover td {
  background: var(--bg-hover);
}

.status-badge {
  display: inline-block;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  font-size: 0.65rem;
  font-weight: 700;
  text-align: center;
}

.status-badge.allowed {
  background: var(--color-success-bg);
  color: #065F46;
  border: 1px solid var(--color-success-border);
}

.status-badge.blocked {
  background: var(--color-danger-bg);
  color: #991B1B;
  border: 1px solid var(--color-danger-border);
}

/* ==========================================================================
   Column 3: Rules & Server Activity Console
   ========================================================================== */
.panel-right {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  min-height: 0;
}

/* Section 4: Rules Panel */
.panel-rules {
  flex: 1.15;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.rules-header {
  justify-content: space-between;
  padding: 5px 10px;
}

.add-rule-btn {
  padding: 3px 6px;
  font-size: 0.68rem;
  border-radius: var(--radius-sm);
}

.rules-list {
  padding: 4px 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

.rule-item {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 4px 6px;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: all 0.15s ease;
  user-select: none;
  cursor: pointer;
}

.rule-item:hover {
  background: var(--bg-card-subtle);
  border-color: #CBD5E1;
}

.rule-item.selected-rule {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.3);
}

.rule-item.disabled {
  opacity: 0.52;
  background: #F8FAFC;
  border-style: dashed;
}

.rule-item.disabled .rule-title {
  text-decoration: line-through;
  color: var(--text-muted);
}

.rule-item.rule-highlight {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
  transform: translateX(3px);
}

.rule-drag-handle {
  color: var(--text-dim);
  font-size: 0.95rem;
  cursor: grab;
  padding: 0 3px;
  user-select: none;
  letter-spacing: -1px;
}

.rule-drag-handle:hover {
  color: var(--color-primary);
}

.rule-drag-handle:active {
  cursor: grabbing;
}

.rule-item[draggable="true"] {
  cursor: grab;
}

.rule-item[draggable="true"]:active {
  cursor: grabbing;
}

.rule-item:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: -1px;
}

.rule-item.dragging {
  opacity: 0.35 !important;
  border: 1.5px dashed var(--color-primary) !important;
  background: var(--color-primary-light) !important;
  transform: scale(0.98);
}

.rule-item.drag-over-top {
  border-top: 3px solid var(--color-primary) !important;
  box-shadow: 0 -3px 8px rgba(37, 99, 235, 0.35);
  background: var(--bg-hover) !important;
}

.rule-item.drag-over-bottom {
  border-bottom: 3px solid var(--color-primary) !important;
  box-shadow: 0 3px 8px rgba(37, 99, 235, 0.35);
  background: var(--bg-hover) !important;
}

.rule-item.rule-just-moved {
  animation: rule-moved-pulse 1.2s ease-out;
}

@keyframes rule-moved-pulse {
  0% {
    background: #EFF6FF;
    border-color: #3B82F6;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.45);
    transform: scale(1.02);
  }
  100% {
    background: #FFFFFF;
    border-color: var(--border-light);
    box-shadow: none;
    transform: scale(1);
  }
}

.rule-priority {
  width: 24px;
  height: 20px;
  background: var(--bg-hover);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-muted);
  flex-shrink: 0;
  cursor: pointer;
  transition: all 0.15s ease;
}

.rule-priority:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-color: #93C5FD;
}

/* Rule Details Container */
.rule-details, .rule-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
  overflow: hidden;
}

.rule-top-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  width: 100%;
}

.rule-name, .rule-title {
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
}

/* Action Badges (ALLOW / DENY) */
.rule-action, .rule-badge {
  font-size: 0.62rem;
  font-weight: 700;
  padding: 1.5px 6px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.4px;
  flex-shrink: 0;
  line-height: 1.2;
}

.rule-action.allow, .rule-badge.allow {
  background: var(--color-success-bg);
  color: #065F46;
  border: 1px solid var(--color-success-border);
}

.rule-action.deny, .rule-badge.deny {
  background: var(--color-danger-bg);
  color: #991B1B;
  border: 1px solid var(--color-danger-border);
}

/* Specification Tags */
.rule-specs, .rule-criteria {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
}

.rule-spec-tag {
  font-family: var(--font-mono);
  font-size: 0.63rem;
  padding: 1px 5px;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-light);
  border-radius: 3px;
  color: var(--text-muted);
  line-height: 1.25;
  white-space: nowrap;
}

.rule-spec-tag.proto {
  background: #EFF6FF;
  color: #1D4ED8;
  border-color: #BFDBFE;
  font-weight: 600;
}

.rule-spec-tag.port {
  background: #F1F5F9;
  color: #334155;
  border-color: #CBD5E1;
}

.rule-spec-tag.domain {
  background: #FEF3C7;
  color: #92400E;
  border-color: #FCD34D;
  font-weight: 600;
}

.rule-spec-tag.ip {
  background: #F3F4F6;
  color: #374151;
  border-color: #E5E7EB;
}

.rule-spec-tag.state {
  background: #ECFDF5;
  color: #047857;
  border-color: #A7F3D0;
  font-weight: 600;
}

/* Action Buttons (Enable / Delete) */
.rule-actions {
  display: flex;
  align-items: center;
  gap: 3px;
  flex-shrink: 0;
}

.rule-action-btn, .rule-icon-btn {
  width: 22px;
  height: 22px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: #FFFFFF;
  color: var(--text-muted);
  font-size: 0.72rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
  padding: 0;
}

.rule-action-btn:hover, .rule-icon-btn:hover {
  background: var(--bg-hover);
  color: var(--text-main);
  border-color: #CBD5E1;
}

.rule-action-btn:disabled,
.rule-action-btn[disabled] {
  opacity: 0.28 !important;
  cursor: not-allowed !important;
  pointer-events: none !important;
  background: #F8FAFC !important;
}

.rule-action-btn.move-up-rule:hover,
.rule-action-btn.move-down-rule:hover {
  background: #EFF6FF;
  color: var(--color-primary);
  border-color: #93C5FD;
}

.rule-action-btn.delete-rule:hover {
  background: #FEE2E2;
  color: #DC2626;
  border-color: #FCA5A5;
}

/* Section 5: Server Activity Console */
.panel-console {
  flex: 0.85;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.console-header {
  justify-content: space-between;
  padding: 5px 10px;
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 2px 6px;
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
}

.btn-ghost:hover {
  background: var(--bg-hover);
  color: var(--text-main);
}

.terminal-body {
  background: #090D16;
  padding: 5px 8px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: #E2E8F0;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  line-height: 1.35;
}

.log-entry {
  display: flex;
  gap: 6px;
  word-break: break-all;
}

.log-time {
  color: #64748B;
  flex-shrink: 0;
}

.log-msg {
  color: #F8FAFC;
}

.log-msg.success { color: #34D399; }
.log-msg.error { color: #F87171; }
.log-msg.info { color: #38BDF8; }
.log-msg.warning { color: #FBBF24; }

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}

.modal-backdrop.hidden {
  display: none;
}

.modal-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-modal);
  width: 100%;
  max-width: 440px;
  overflow: hidden;
  border: 1px solid var(--border-light);
  animation: modal-pop 0.2s ease-out;
}

.modal-inspector {
  max-width: 580px;
}

@keyframes modal-pop {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 0.92rem;
  font-weight: 600;
}

.modal-close {
  background: transparent;
  border: none;
  font-size: 1.3rem;
  color: var(--text-muted);
  cursor: pointer;
}

.modal-card form {
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 4px;
  padding-top: 10px;
  border-top: 1px solid var(--border-light);
}

/* Deep Packet Inspector View */
.inspector-content {
  padding: 12px 14px;
  max-height: 420px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.osi-layer-box {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 8px 10px;
  background: var(--bg-card-subtle);
}

.osi-layer-title {
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.osi-fields-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.osi-field-name {
  color: var(--text-muted);
}

.osi-field-val {
  font-weight: 600;
  color: var(--text-main);
}

/* ==========================================================================
   Responsive Design System: Fits on Every Screen & Page
   ========================================================================== */

/* Standard Laptops & Small Desktops (<= 1350px) */
@media (max-width: 1350px) {
  .dashboard-container {
    grid-template-columns: 270px minmax(0, 1fr) 310px;
    gap: 7px;
    padding: 7px 8px;
  }

  .topology-header {
    padding: 5px 8px;
    gap: 5px;
  }

  .header-right-controls {
    gap: 4px;
  }

  .doc-nav-btn {
    padding: 2px 5px !important;
    font-size: 0.65rem !important;
  }

  .topology-legend {
    gap: 5px;
    font-size: 0.62rem;
  }
}

/* Compact Heights (<= 760px: 768p Laptops, Windows 125%/150% Scaling, Active Bookmarks) */
@media (max-height: 760px) {
  .dashboard-container {
    padding: 5px 6px;
    gap: 6px;
  }

  .panel-header {
    padding: 4px 8px;
  }

  .presets-list {
    grid-auto-rows: 35px;
    max-height: 114px;
    padding: 4px 6px;
    gap: 4px;
    align-content: start;
  }

  .preset-card {
    height: 35px;
    min-height: 35px;
    max-height: 35px;
    padding: 2px 5px;
    gap: 5px;
    box-sizing: border-box;
    overflow: hidden;
  }

  .preset-icon {
    width: 20px;
    height: 20px;
    min-width: 20px;
  }

  .preset-name {
    font-size: 0.68rem;
    line-height: 1.15;
  }

  .preset-sub {
    font-size: 0.56rem;
    line-height: 1.1;
  }

  .request-form {
    padding: 4px 6px;
    gap: 3px;
  }

  .form-group label {
    font-size: 0.61rem;
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    height: 23px;
    line-height: 17px;
    font-size: 0.69rem;
    padding: 2px 5px;
  }

  .form-actions-group .btn-primary,
  .form-actions-group .inspect-browser-btn {
    padding: 4px 6px;
    font-size: 0.68rem;
  }

  .packet-rate-widget {
    margin: 3px 6px 4px 6px;
    padding: 3px 6px;
    height: 30px;
  }

  .rate-sparkline {
    height: 14px;
    width: 42px;
  }

  .rules-list {
    padding: 3px 5px;
    gap: 3px;
  }

  .rule-item {
    padding: 3px 5px;
    gap: 4px;
  }

  .timeline-table th {
    padding: 3px 6px;
    font-size: 0.62rem;
  }

  .timeline-table td {
    padding: 2.5px 6px;
    font-size: 0.66rem;
  }

  .terminal-body {
    padding: 4px 6px;
    font-size: 0.64rem;
  }
}

/* Ultra-Compact Heights (<= 640px) */
@media (max-height: 640px) {
  .presets-list {
    grid-auto-rows: 32px;
    max-height: 102px;
    padding: 3px 5px;
    gap: 3px;
    align-content: start;
  }

  .preset-card {
    height: 32px;
    min-height: 32px;
    max-height: 32px;
    padding: 2px 4px;
    gap: 4px;
  }

  .preset-icon {
    width: 18px;
    height: 18px;
    min-width: 18px;
  }

  .tab-toggle {
    padding: 2px 6px;
  }

  .tab-btn {
    padding: 2px 0;
    font-size: 0.66rem;
  }

  #headersGroup {
    display: none; /* Hide optional header field on ultra-compact heights to guarantee 100% fit */
  }

  .panel-topology {
    flex: 1.1;
  }

  .panel-timeline {
    flex: 0.9;
  }
}

/* Extreme Short Viewports (<= 530px or High Zoom) - Smooth Scroll Fallback */
@media (max-height: 530px) {
  html, body {
    height: auto;
    max-height: none;
    overflow-y: auto !important;
    overflow-x: hidden;
  }

  .dashboard-container {
    height: auto;
    max-height: none;
    overflow: visible;
    grid-template-rows: auto;
    padding: 6px;
  }

  .panel-request-crafter,
  .panel-center,
  .panel-right {
    height: 540px;
  }
}

/* Medium Screens & Tablets Landscape (<= 1100px) */
@media (max-width: 1100px) {
  html, body {
    height: auto;
    max-height: none;
    overflow-y: auto;
    overflow-x: hidden;
  }

  .dashboard-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    grid-template-rows: auto;
    height: auto;
    max-height: none;
    overflow: visible;
    gap: 10px;
    padding: 10px;
  }

  .panel-center {
    height: auto;
    min-height: 0;
  }

  .panel-topology {
    height: 400px;
    min-height: 400px;
  }

  .panel-timeline {
    height: 300px;
  }

  .panel-right {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    height: auto;
    max-height: none;
  }

  .panel-rules {
    height: 400px;
  }

  .panel-console {
    height: 400px;
  }
}

/* Tablets & Mobile Devices (<= 820px) */
@media (max-width: 820px) {
  html, body {
    height: auto;
    min-height: 100vh;
    max-height: none;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
  }

  .dashboard-container {
    display: flex;
    flex-direction: column;
    padding: 8px;
    gap: 10px;
    height: auto;
    max-height: none;
    overflow: visible;
  }

  /* Natural Mobile Flow: Topology -> Crafter -> Rules & Console */
  .panel-center {
    order: 1;
    height: auto;
  }

  .panel-request-crafter {
    order: 2;
    height: auto;
  }

  .panel-right {
    order: 3;
    display: flex;
    flex-direction: column;
    gap: 10px;
    height: auto;
  }

  .panel {
    border-radius: var(--radius-md);
    flex: none !important;
    height: auto !important;
    max-height: none !important;
  }

  .panel-topology {
    height: 380px !important;
    min-height: 380px !important;
  }

  .panel-header.topology-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 8px 10px;
  }

  .header-right-controls {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 6px;
  }

  .topology-legend {
    padding: 0;
    border: none;
  }

  .panel-rules {
    max-height: 420px;
  }

  .rules-list {
    max-height: 340px;
  }

  .terminal-body {
    height: 220px;
    max-height: 220px;
  }

  .panel-timeline {
    height: auto;
  }

  .table-container {
    max-height: 280px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .timeline-table {
    min-width: 540px;
  }

  .presets-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-height: none;
    gap: 6px;
    padding: 8px;
  }

  /* Modals on Mobile */
  .modal-backdrop {
    padding: 8px;
  }

  .modal-card {
    max-width: 96vw;
    width: 96vw;
    max-height: 92vh;
  }

  .modal-card form {
    padding: 10px 12px;
    max-height: calc(92vh - 60px);
    overflow-y: auto;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  input[type="text"],
  input[type="number"],
  select,
  textarea {
    font-size: 16px !important; /* Prevents auto-zoom on iOS */
  }

  .osi-fields-grid {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

/* Very Small Phones (<= 440px) */
@media (max-width: 440px) {
  .presets-list {
    grid-template-columns: 1fr;
  }

  .node-meta .node-name {
    font-size: 0.68rem;
  }

  .node-meta .node-ip {
    font-size: 0.6rem;
  }

  .client-badge, .server-badge {
    font-size: 0.52rem;
    padding: 1px 4px;
  }
}

/* ==========================================================================
   Client Browser Preview Window & Academic Document Links
   ========================================================================== */
.doc-nav-btn {
  background: #EFF6FF !important;
  border-color: #BFDBFE !important;
  color: #1D4ED8 !important;
  font-weight: 600 !important;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.doc-nav-btn:hover {
  background: #DBEAFE !important;
  border-color: #93C5FD !important;
}

.inspect-browser-btn {
  background: #F8FAFC;
  border: 1px solid #CBD5E1;
  color: #334155;
  font-size: 0.73rem;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  margin-top: 6px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.inspect-browser-btn:hover {
  background: #E2E8F0;
  color: #0F172A;
  border-color: #94A3B8;
}

/* Modal: Browser Window */
.modal-browser-window {
  width: 90%;
  max-width: 860px;
  height: 560px;
  display: flex;
  flex-direction: column;
  padding: 0 !important;
  overflow: hidden;
  border-radius: 10px;
  background: #0F172A;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
}

.browser-chrome-bar {
  background: #1E293B;
  padding: 8px 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid #334155;
}

.browser-window-dots {
  display: flex;
  gap: 6px;
}
.dot-red { width: 11px; height: 11px; border-radius: 50%; background: #EF4444; display: inline-block; }
.dot-yellow { width: 11px; height: 11px; border-radius: 50%; background: #F59E0B; display: inline-block; }
.dot-green { width: 11px; height: 11px; border-radius: 50%; background: #10B981; display: inline-block; }

.browser-tab {
  background: #0F172A;
  color: #E2E8F0;
  padding: 5px 14px;
  border-radius: 6px 6px 0 0;
  font-size: 0.74rem;
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.browser-close-btn {
  margin-left: auto;
  color: #94A3B8;
  font-size: 1.4rem;
  background: none;
  border: none;
  cursor: pointer;
  line-height: 1;
}
.browser-close-btn:hover {
  color: #F8FAFC;
}

.browser-address-bar-row {
  background: #0F172A;
  padding: 8px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid #1E293B;
}

.browser-nav-buttons {
  display: flex;
  gap: 4px;
}
.b-nav-btn {
  background: transparent;
  border: none;
  color: #94A3B8;
  font-size: 0.95rem;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
}
.b-nav-btn:hover:not(:disabled) {
  background: #334155;
  color: white;
}

.browser-url-input-box {
  flex: 1;
  background: #1E293B;
  border: 1px solid #334155;
  border-radius: 20px;
  display: flex;
  align-items: center;
  padding: 4px 14px;
  gap: 8px;
}

.browser-url-input-box input {
  flex: 1;
  background: transparent;
  border: none;
  color: #F8FAFC;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  outline: none;
}

.security-badge {
  font-size: 0.68rem;
  padding: 2px 7px;
  border-radius: 12px;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.2);
  color: #34D399;
}
.security-badge.blocked {
  background: rgba(239, 68, 68, 0.25);
  color: #F87171;
}

.latency-pill {
  font-size: 0.68rem;
  color: #94A3B8;
  font-family: var(--font-mono);
}

.browser-status-chip {
  padding: 4px 10px;
  border-radius: 14px;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
  background: #10B981;
  color: white;
}
.browser-status-chip.blocked {
  background: #EF4444;
}

.browser-viewport {
  flex: 1;
  background: #FFFFFF;
  overflow-y: auto;
  position: relative;
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.browser-loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  height: 100%;
  color: #64748B;
  font-size: 0.85rem;
}

.browser-render-content {
  width: 100%;
  height: 100%;
}