/* =========================================================================
   ICTONE PRACTICAL LAB - NETWORK DIAGRAM DESIGNER STYLES
   ========================================================================= */

.network-lab-page {
  background-color: #F8FAFC;
  color: #0F172A;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Compact Lab Header */
.lab-header-compact {
  background: #FFFFFF;
  border-bottom: 1px solid #E2E8F0;
  padding: 1.25rem 0;
}

.lab-header-content {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.back-to-hub {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: #64748B;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.15s ease;
  width: fit-content;
}

.back-to-hub:hover {
  color: #2563EB;
}

.lab-title-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.lab-title-row h1 {
  font-size: 1.75rem;
  font-weight: 800;
  color: #0F172A;
  margin: 0;
  letter-spacing: -0.02em;
}

.lab-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: #EFF6FF;
  color: #2563EB;
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.lab-subtitle {
  color: #64748B;
  font-size: 0.95rem;
  margin: 0;
}

/* Main Workspace Area */
.network-workspace-main {
  flex: 1;
  padding: 1.5rem 0 3rem;
}

.network-workspace-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.network-app-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 16px;
  box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Action Toolbar */
.net-toolbar {
  background: #FFFFFF;
  border-bottom: 1px solid #E2E8F0;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.net-tool-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.net-divider {
  width: 1px;
  height: 24px;
  background: #E2E8F0;
  margin: 0 0.3rem;
}

.net-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.45rem 0.75rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  color: #334155;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.net-btn:hover:not(:disabled) {
  background: #F8FAFC;
  border-color: #CBD5E1;
  color: #0F172A;
}

.net-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.net-btn.primary {
  background: #2563EB;
  border-color: #2563EB;
  color: #FFFFFF;
}

.net-btn.primary:hover {
  background: #1D4ED8;
  border-color: #1D4ED8;
}

.net-btn.danger-btn:hover {
  background: #FEF2F2;
  border-color: #FECACA;
  color: #DC2626;
}

.net-btn-icon-only {
  width: 34px;
  height: 34px;
  padding: 0;
}

/* Connection Segmented Switcher */
.net-conn-toggle {
  display: inline-flex;
  align-items: center;
  background: #F1F5F9;
  padding: 3px;
  border-radius: 8px;
  border: 1px solid #E2E8F0;
}

.net-conn-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.7rem;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  border: none;
  background: transparent;
  color: #64748B;
  cursor: pointer;
  transition: all 0.15s ease;
}

.net-conn-btn.active {
  background: #FFFFFF;
  color: #2563EB;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

/* Workspace Layout: Palette (Left) + Canvas (Right) */
.net-workspace-body {
  display: flex;
  min-height: clamp(560px, 68vh, 720px);
  position: relative;
}

/* Devices Palette (Left Panel) */
.net-palette-panel {
  width: 260px;
  background: #FAFAFC;
  border-right: 1px solid #E2E8F0;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.net-palette-header {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid #E2E8F0;
  background: #FFFFFF;
}

.net-palette-header h3 {
  font-size: 0.85rem;
  font-weight: 700;
  color: #64748B;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0;
}

.net-palette-list {
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  overflow-y: auto;
  max-height: calc(clamp(560px, 68vh, 720px) - 50px);
}

.net-device-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.55rem 0.75rem;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
  text-align: left;
}

.net-device-item:hover {
  border-color: #93C5FD;
  background: #EFF6FF;
  transform: translateX(2px);
}

.net-device-item:active {
  transform: scale(0.98);
}

.net-device-icon-preview {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.net-device-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.net-device-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: #0F172A;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.net-device-type-tag {
  font-size: 0.7rem;
  color: #64748B;
}

/* Canvas Area (Right Panel) */
.net-canvas-wrap {
  flex: 1;
  background: #FFFFFF;
  position: relative;
  overflow: hidden;
  cursor: default;
}

.net-canvas-svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* Canvas Grid Background */
.net-grid-pattern {
  stroke: #F1F5F9;
  stroke-width: 1;
}

/* Canvas Instructions Overlay (Empty State) */
.net-empty-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  pointer-events: none;
  color: #94A3B8;
  text-align: center;
  padding: 1.5rem;
}

.net-empty-overlay svg {
  opacity: 0.6;
}

.net-empty-overlay p {
  font-size: 0.95rem;
  max-width: 360px;
  margin: 0;
  color: #64748B;
}

/* Device SVG Node */
.net-node-group {
  cursor: move;
  user-select: none;
}

.net-node-box {
  fill: #FFFFFF;
  stroke: #CBD5E1;
  stroke-width: 1.5;
  rx: 8;
  ry: 8;
  transition: stroke 0.15s ease, filter 0.15s ease;
}

.net-node-group:hover .net-node-box {
  stroke: #94A3B8;
}

.net-node-group.selected .net-node-box {
  stroke: #2563EB;
  stroke-width: 2;
  filter: drop-shadow(0 0 6px rgba(37, 99, 235, 0.25));
}

.net-node-label {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  fill: #0F172A;
  text-anchor: middle;
  pointer-events: none;
}

.net-node-ip {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9.5px;
  fill: #2563EB;
  text-anchor: middle;
  pointer-events: none;
}

/* Ports & Connection Handles */
.net-port-circle {
  fill: #FFFFFF;
  stroke: #2563EB;
  stroke-width: 1.5;
  r: 4;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.net-node-group:hover .net-port-circle,
.net-node-group.selected .net-port-circle,
.net-workspace-body.connecting-mode .net-port-circle {
  opacity: 1;
}

.net-port-hit {
  fill: transparent;
  cursor: crosshair;
}

/* Wire / Connection Paths */
.net-wire-path {
  stroke: #334155;
  stroke-width: 2.2;
  fill: none;
  cursor: pointer;
  transition: stroke 0.15s ease, stroke-width 0.15s ease;
}

.net-wire-path.wireless {
  stroke: #2563EB;
  stroke-dasharray: 6 5;
  stroke-width: 2;
}

.net-wire-path:hover {
  stroke: #2563EB;
  stroke-width: 3.5;
}

.net-wire-path.selected {
  stroke: #2563EB;
  stroke-width: 3.5;
  filter: drop-shadow(0 0 4px rgba(37, 99, 235, 0.4));
}

.net-wire-hit {
  stroke: transparent;
  stroke-width: 16;
  fill: none;
  cursor: pointer;
}

.net-temp-wire {
  stroke: #2563EB;
  stroke-width: 2;
  stroke-dasharray: 4 4;
  fill: none;
  pointer-events: none;
}

/* Workspace Footer / Status Bar */
.net-status-bar {
  background: #F8FAFC;
  border-top: 1px solid #E2E8F0;
  padding: 0.5rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: #64748B;
}

.net-status-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Drawers & Modals */
.net-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(3px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}

.net-modal-backdrop.open {
  display: flex;
}

.net-modal-content {
  background: #FFFFFF;
  border-radius: 16px;
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  animation: netModalPop 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.net-modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid #E2E8F0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.net-modal-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #0F172A;
  margin: 0;
}

.btn-close-modal {
  background: none;
  border: none;
  color: #64748B;
  cursor: pointer;
  padding: 0.3rem;
  border-radius: 6px;
}

.btn-close-modal:hover {
  background: #F1F5F9;
  color: #0F172A;
}

.net-modal-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.net-form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.net-form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: #334155;
}

.net-input {
  padding: 0.55rem 0.85rem;
  border-radius: 8px;
  border: 1px solid #CBD5E1;
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.net-input:focus {
  border-color: #2563EB;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.net-modal-footer {
  padding: 1rem 1.5rem 1.25rem;
  border-top: 1px solid #E2E8F0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.6rem;
}

/* Practice Ideas & Reference Drawers */
.net-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  max-width: 440px;
  height: 100%;
  background: #FFFFFF;
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.12);
  z-index: 1000;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

.net-drawer.open {
  transform: translateX(0);
}

.net-drawer-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid #E2E8F0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.net-drawer-body {
  padding: 1.5rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.net-practice-card {
  border: 1px solid #E2E8F0;
  border-radius: 12px;
  padding: 1rem;
  background: #F8FAFC;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.net-practice-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #0F172A;
  margin: 0;
}

.net-practice-card p {
  font-size: 0.85rem;
  color: #475569;
  margin: 0;
  line-height: 1.5;
}

.net-practice-devices {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.35rem;
}

.net-practice-tag {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: #EFF6FF;
  color: #2563EB;
}

/* Reference Item List */
.net-ref-item {
  display: flex;
  gap: 0.85rem;
  padding: 0.85rem;
  border: 1px solid #E2E8F0;
  border-radius: 10px;
  background: #FFFFFF;
}

.net-ref-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.net-ref-text h4 {
  font-size: 0.92rem;
  font-weight: 700;
  color: #0F172A;
  margin: 0 0 0.2rem;
}

.net-ref-text p {
  font-size: 0.82rem;
  color: #64748B;
  margin: 0;
  line-height: 1.45;
}

/* Mobile Bottom Sheet for Adding Devices */
.mobile-add-btn {
  display: none;
}

/* Toast Notifications */
.net-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: #0F172A;
  color: #FFFFFF;
  padding: 0.65rem 1.25rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.net-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Responsive Styles */
@media (max-width: 960px) {
  .net-palette-panel {
    width: 220px;
  }
}

@media (max-width: 768px) {
  .net-workspace-body {
    flex-direction: column;
    min-height: 520px;
  }
  .net-palette-panel {
    display: none;
  }
  .net-palette-panel.mobile-open {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    max-height: 60vh;
    z-index: 1000;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.15);
    border-top: 1px solid #E2E8F0;
    border-radius: 16px 16px 0 0;
    background: #FFFFFF;
  }
  .mobile-add-btn {
    display: inline-flex;
  }
  .net-toolbar {
    padding: 0.6rem 0.85rem;
    gap: 0.6rem;
  }
}

@media (max-width: 480px) {
  .net-btn {
    padding: 0.45rem 0.6rem;
    font-size: 0.8rem;
  }
  .net-tool-group {
    gap: 0.25rem;
  }
  .net-conn-btn {
    padding: 0.35rem 0.5rem;
    font-size: 0.78rem;
  }
}

@media (max-width: 360px) {
  .net-btn {
    padding: 0.4rem 0.5rem;
    font-size: 0.75rem;
  }
  .net-conn-toggle {
    padding: 2px;
  }
}