:root {
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --secondary-color: #8b5cf6;
  --accent-color: #06b6d4;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  --background-dark: #0f172a;
  --background-card: #1e293b;
  --loading-overlay-bg: rgba(15, 23, 42, 0.8);
  --background-input: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --border-color: #475569;
  --border-hover: #6366f1;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: linear-gradient(135deg, var(--background-dark) 0%, #1a202c 100%);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
}

.container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--background-dark);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  padding: 2rem;
  text-align: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}

.header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

.header h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #ffffff, #e2e8f0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  z-index: 1;
}

.header p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}

.performance-info {
  display: flex;
  justify-content: center;
  gap: 2rem;
  font-family: "JetBrains Mono", "Fira Code", monospace;
  font-size: 0.875rem;
  color: var(--accent-color);
  background: rgba(0, 0, 0, 0.2);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  z-index: 1;
  max-width: fit-content;
  margin: 0 auto;
}

.main-content {
  display: grid;
  grid-template-columns: 420px 1fr;
  flex: 1;
  min-height: 0;
  gap: 1px;
  background: var(--border-color);
}

.input-panel {
  background: var(--background-card);
  display: flex;
  flex-direction: column;
  height: calc(100vh - 200px);
  border-radius: 0 0 0 var(--radius-xl);
}

.visualization-panel {
  background: var(--background-card);
  display: flex;
  flex-direction: column;
  height: calc(100vh - 200px);
  position: relative;
  border-radius: 0 0 var(--radius-xl) 0;
}

.panel-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.02);
}

.panel-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.performance-toggle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.switch {
  position: relative;
  display: inline-block;
  width: 64px;
  height: 32px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--background-input);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
}

.slider:before {
  position: absolute;
  content: "";
  height: 24px;
  width: 24px;
  left: 4px;
  background: linear-gradient(135deg, #ffffff, #e2e8f0);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
}

input:checked + .slider {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-color: var(--primary-color);
}

input:checked + .slider:before {
  transform: translateX(32px);
  background: #ffffff;
}

.xml-textarea {
  flex: 1;
  margin: 1.5rem;
  padding: 1.25rem;
  background: var(--background-input);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-family: "JetBrains Mono", "Fira Code", monospace;
  font-size: 14px;
  line-height: 1.6;
  resize: none;
  outline: none;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.xml-textarea:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
  background: rgba(51, 65, 85, 0.8);
}

.xml-textarea::placeholder {
  color: var(--text-muted);
}

.controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  padding: 0 1.5rem 1rem;
}

.performance-controls {
  margin: 1rem 1.5rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: center;
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.02);
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.performance-controls label {
  font-weight: 500;
}

.performance-controls input[type="range"] {
  background: var(--background-input);
  height: 6px;
  border-radius: 3px;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.performance-controls input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  cursor: pointer;
  box-shadow: var(--shadow-md);
}

.performance-controls input[type="number"] {
  background: var(--background-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 0.5rem;
  width: 80px;
  font-family: "JetBrains Mono", monospace;
  transition: all 0.3s ease;
}

.performance-controls input[type="number"]:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.1);
}

.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--background-input);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--border-color);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-icon {
  font-size: 1rem;
}

.zoom-controls {
  display: flex;
  gap: 0.5rem;
}

.zoom-btn {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--background-input);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
}

.zoom-btn:hover {
  background: var(--border-color);
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

/* Status message styles */
.status-message {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  padding: 10px 20px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  opacity: 0.9;
  z-index: 1000;
  transition: all 0.3s ease;
  text-align: center;
  max-width: 80%;
  display: none;
}

.status-message:not(:empty) {
  display: block;
}

.status-info {
  background-color: var(--accent-color);
  color: white;
}

.status-success {
  background-color: var(--success-color);
  color: white;
}

.status-error {
  background-color: var(--error-color);
  color: white;
}

.status-warning {
  background-color: var(--warning-color);
  color: white;
}

.tree-container {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  background-image: radial-gradient(circle at 25% 25%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 20px 20px, 20px 20px;
  /* Añadir un cursor que indique que se puede arrastrar */
  cursor: grab;
}

.tree-svg {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border: 2px solid #475569;
  border-radius: var(--radius-lg);
  cursor: grab;
  width: 100%;
  height: 100%;
  
  /* Render optimization with improved quality */
  transform-origin: center center;
  shape-rendering: geometricPrecision;
  text-rendering: optimizeLegibility;
  image-rendering: optimizeQuality;
}

.smooth-transform {
  transition: transform 0.3s cubic-bezier(0.33, 1, 0.68, 1);
  transform-origin: center center;
  /* Estilos para lienzo infinito */
  min-width: 100%;
  min-height: 100%;
}

.tree-svg:active {
  cursor: grabbing;
}

.tree-node rect {
  fill: #4f46e5;
  stroke: #ffffff;
  stroke-width: 3px;
  rx: 10px;
  transition: all 0.2s ease;
  shape-rendering: geometricPrecision;
  paint-order: stroke fill;
}

/* Highlight expandable nodes on hover to indicate they're interactive */
.tree-node[data-has-toggle="true"]:hover rect {
  fill: #6366f1;
  stroke: #e0e7ff;
  stroke-width: 4px;
  filter: brightness(1.1);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

.tree-node[data-has-toggle="true"]:active rect {
  fill: #4338ca;
}

/* Style for the expand/collapse indicator */
.expand-indicator {
  transition: all 0.2s ease;
}

.tree-node:hover .expand-indicator {
  fill: #818cf8;
  stroke-width: 2px;
  filter: brightness(1.2);
}

.tree-node text {
  fill: #ffffff;
  font-size: 16px;
  font-weight: bold;
  text-anchor: middle;
  dominant-baseline: middle;
  pointer-events: none; /* Evita que el texto interrumpa clics */
}

.connection-line {
  stroke: #ffffff;
  stroke-width: 2px;
  fill: none; /* Explicitly ensure no fill */
  stroke-linecap: round; /* Rounded line ends */
  stroke-linejoin: round; /* Rounded corners */
}

/* Loading indicator for large tree visualization */
.tree-loading-indicator {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--background-card);
  border-radius: 8px;
  padding: 12px 20px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 1000;
  color: white;
  font-size: 14px;
  max-width: 300px;
}

.tree-loading-indicator .progress-bar {
  width: 100%;
  height: 6px;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
  overflow: hidden;
}

.tree-loading-indicator .progress {
  height: 100%;
  width: 0%;
  background-color: var(--primary-color);
  border-radius: 3px;
  transition: width 0.3s ease;
}

/* Placeholder node style */
.placeholder-node .node-rect {
  fill: rgba(79, 70, 229, 0.5) !important;
  stroke: rgba(255, 255, 255, 0.5) !important;
}
/* Visible styling for normal tree nodes */
.tree-node .node-rect {
  fill: var(--primary-color);
  stroke: var(--text-primary);
  stroke-width: 2;
}
.tree-node .node-text {
  fill: var(--text-primary);
}

.tree-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
  border-radius: var(--radius-lg);
}

.tree-canvas:active {
  cursor: grabbing;
}

/* Indicadores visuales de arrastre */
.is-dragging {
  cursor: grabbing !important;
}

/* Mejorar estilo de los botones de zoom */
.zoom-controls {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.zoom-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--background-input);
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: bold;
  border: 1px solid var(--border-color);
  transition: all 0.2s ease-in-out;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.zoom-btn:hover {
  background: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.empty-state {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--text-muted);
  pointer-events: none;
  max-width: 400px;
  padding: 2rem;
}

.empty-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  opacity: 0.3;
  filter: drop-shadow(0 0 20px rgba(99, 102, 241, 0.3));
}

.empty-state p {
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 0.5rem;
}

.tooltip {
  position: absolute;
  background: rgba(15, 23, 42, 0.95);
  color: white;
  padding: 0;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  pointer-events: none;
  z-index: 1000;
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  max-width: 350px;
  width: 320px;
  word-wrap: break-word;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  transform: scale(0.95);
  overflow: hidden;
}

.tooltip.visible {
  opacity: 1;
  transform: scale(1);
}

.tooltip-title {
  padding: 0.8rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
}

.element-node-title {
  background: linear-gradient(135deg, #4f46e5, #6366f1);
}

.text-node-title {
  background: linear-gradient(135deg, #0891b2, #06b6d4);
}

.tooltip-title strong {
  font-size: 1rem;
  font-weight: 600;
}

.tooltip-type {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 20px;
}

.tooltip-content {
  padding: 1rem;
  max-height: 200px;
  overflow-y: auto;
}

.tooltip-content h4 {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.tooltip-content .attributes {
  margin-bottom: 0.8rem;
}

.attribute-row {
  display: flex;
  padding: 0.3rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.attribute-name {
  font-weight: 600;
  color: #6366f1;
  margin-right: 0.5rem;
  min-width: 80px;
}

.content-value {
  background: rgba(0, 0, 0, 0.2);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  font-family: "JetBrains Mono", monospace;
  margin-bottom: 0.8rem;
  white-space: pre-wrap;
  color: #f8fafc;
}

.path-value {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: rgba(0, 0, 0, 0.2);
  padding: 0.3rem 0.5rem;
  border-radius: var(--radius-sm);
  display: block;
}

.tooltip-actions {
  padding: 0.8rem 1rem;
  background: rgba(0, 0, 0, 0.2);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.action-tip {
  display: flex;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.action-icon {
  display: inline-block;
  width: 18px;
  height: 18px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  text-align: center;
  line-height: 18px;
  margin-right: 0.5rem;
  font-weight: bold;
}

.tooltip-top::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 20px;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-top: 8px solid rgba(15, 23, 42, 0.95);
}

.tooltip-bottom::after {
  content: '';
  position: absolute;
  top: -8px;
  left: 20px;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-bottom: 8px solid rgba(15, 23, 42, 0.95);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--background-input);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .main-content {
    grid-template-columns: 1fr;
    grid-template-rows: 400px 1fr;
  }

  .input-panel {
    height: 400px;
    border-radius: 0;
  }

  .visualization-panel {
    height: calc(100vh - 600px);
    border-radius: 0;
  }

  .header h1 {
    font-size: 2rem;
  }

  .performance-info {
    flex-direction: column;
    gap: 0.5rem;
  }

  .controls {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  body {
    padding: 0;
  }

  .container {
    border-radius: 0;
  }

  .header {
    padding: 1.5rem 1rem;
  }

  .header h1 {
    font-size: 1.8rem;
  }

  .panel-header {
    padding: 1rem;
    flex-direction: column;
    gap: 1rem;
    align-items: stretch;
  }

  .zoom-controls {
    justify-content: center;
  }

  .performance-controls {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .xml-textarea {
    margin: 1rem;
  }

  .controls {
    padding: 0 1rem 1rem;
  }
}

/* Animation Classes */
.fade-in {
  animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Focus visible for accessibility */
.btn:focus-visible,
.zoom-btn:focus-visible,
input:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}