:root {
  --bg-dark: #070a12;
  --bg-card: rgba(14, 20, 40, 0.75);
  --bg-card-hover: rgba(22, 32, 64, 0.85);
  --border-color: rgba(0, 240, 255, 0.2);
  --border-glow: rgba(0, 240, 255, 0.5);

  --accent-cyan: #00f0ff;
  --accent-purple: #a855f7;
  --accent-magenta: #ec4899;
  --accent-amber: #f59e0b;
  --accent-green: #10b981;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

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

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
}

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

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

#app {
  display: flex;
  flex-direction: column;
  width: 100vw;
  height: 100vh;
  position: relative;
  background: radial-gradient(circle at 50% 0%, #111a36 0%, #070a12 70%);
}

/* ==========================================================================
   Loading Screen
   ========================================================================== */
.loader-overlay {
  position: absolute;
  inset: 0;
  z-index: 9999;
  background: rgba(3, 5, 12, 0.95);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s;
}

.loader-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-content {
  text-align: center;
  max-width: 420px;
  width: 90%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.loader-spinner {
  width: 56px;
  height: 56px;
  border: 3px solid rgba(0, 240, 255, 0.15);
  border-top-color: var(--accent-cyan);
  border-right-color: var(--accent-purple);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
  box-shadow: 0 0 25px rgba(0, 240, 255, 0.4);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loader-title {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 3px;
  color: #ffffff;
  text-shadow: 0 0 12px rgba(0, 240, 255, 0.6);
}

.loader-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.loader-bar-bg {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 1px solid rgba(0, 240, 255, 0.2);
}

.loader-bar-fill {
  height: 100%;
  width: 15%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
  box-shadow: 0 0 10px var(--accent-cyan);
}

/* ==========================================================================
   Header Navigation
   ========================================================================== */
.app-header {
  height: 64px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  background: rgba(7, 10, 18, 0.8);
  backdrop-filter: blur(12px);
  z-index: 100;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-badge {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.2), rgba(168, 85, 247, 0.2));
  border: 1.5px solid var(--accent-cyan);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 14px;
  color: var(--accent-cyan);
  box-shadow: 0 0 14px rgba(0, 240, 255, 0.3);
}

.brand-title {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 1.5px;
  background: linear-gradient(90deg, #ffffff, #a5f3fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-sub {
  font-size: 10px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  letter-spacing: 1px;
}

.nav-tabs {
  display: flex;
  gap: 6px;
  background: rgba(15, 23, 42, 0.6);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-tab {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.nav-tab:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.nav-tab.active {
  color: #030712;
  background: linear-gradient(135deg, var(--accent-cyan), #38bdf8);
  box-shadow: 0 0 16px rgba(0, 240, 255, 0.4);
  font-weight: 700;
}

.nav-tab-link {
  text-decoration: none;
  border: 1px dashed rgba(0, 240, 255, 0.4);
  color: #00f0ff;
}

.nav-tab-link:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: #00f0ff;
  color: #ffffff;
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  transition: all 0.2s ease;
}

.btn-icon:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
}

/* ==========================================================================
   Main Content & Views
   ========================================================================== */
.main-content {
  flex: 1;
  position: relative;
  overflow: hidden;
}

.view-panel {
  display: none;
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
}

.view-panel.active {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
}

#view-cosmos.view-panel,
#view-cosmos-clusters.view-panel,
#view-explorer.view-panel {
  overflow: hidden !important;
}

/* ==========================================================================
   Explorer Controls Bar
   ========================================================================== */
.explorer-control-bar {
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(10, 15, 30, 0.7);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 240, 255, 0.12);
  z-index: 50;
  flex-wrap: wrap;
}

.search-container {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1;
  max-width: 520px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 4px 6px 4px 14px;
  transition: all 0.25s ease;
}

.search-container:focus-within {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
}

.search-icon {
  font-size: 14px;
  color: var(--text-dim);
  margin-right: 8px;
}

#word-search-input {
  flex: 1;
  background: transparent;
  border: none;
  color: #ffffff;
  font-size: 14px;
  font-family: var(--font-sans);
  outline: none;
}

#word-search-input::placeholder {
  color: var(--text-dim);
}

.autocomplete-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: rgba(10, 15, 30, 0.95);
  backdrop-filter: blur(14px);
  border: 1px solid var(--accent-cyan);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.7), 0 0 20px rgba(0, 240, 255, 0.25);
  max-height: 250px;
  overflow-y: auto;
  z-index: 999;
}

.autocomplete-item {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: background 0.15s ease;
}

.autocomplete-item:last-child {
  border-bottom: none;
}

.autocomplete-item:hover,
.autocomplete-item.selected {
  background: rgba(0, 240, 255, 0.18);
  color: var(--accent-cyan);
}

.btn {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), #0284c7);
  color: #030712;
  font-weight: 700;
  box-shadow: 0 0 14px rgba(0, 240, 255, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #38bdf8, var(--accent-cyan));
  box-shadow: 0 0 22px rgba(0, 240, 255, 0.6);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-main);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

.btn-search {
  background: var(--accent-cyan);
  color: #030712;
  padding: 6px 14px;
}

.btn-block {
  width: 100%;
}

/* Filter Toggle */
.filter-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  font-size: 12px;
  color: var(--text-muted);
}

.filter-toggle input {
  display: none;
}

.toggle-slider {
  width: 36px;
  height: 20px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  position: relative;
  transition: background 0.25s ease;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.toggle-slider::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  background: #ffffff;
  border-radius: 50%;
  transition: transform 0.25s ease;
}

.filter-toggle input:checked + .toggle-slider {
  background: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

.filter-toggle input:checked + .toggle-slider::after {
  transform: translateX(16px);
  background: #030712;
}

/* ==========================================================================
   Canvas Viewport
   ========================================================================== */
.canvas-viewport {
  flex: 1;
  position: relative;
  overflow: hidden;
}

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

/* Canvas Floating Controls */
.canvas-floating-controls {
  position: absolute;
  right: 20px;
  bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 20;
}

.btn-ctrl {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: rgba(14, 20, 40, 0.85);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 18px;
  font-family: var(--font-mono);
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  transition: all 0.2s ease;
}

.btn-ctrl:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.35);
}

/* Canvas Legend */
.canvas-legend {
  position: absolute;
  left: 20px;
  bottom: 20px;
  background: rgba(10, 15, 30, 0.75);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 11px;
  color: var(--text-muted);
  pointer-events: none;
  z-index: 20;
}

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

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.legend-dot.center {
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
}

.legend-dot.semantic {
  background: var(--accent-purple);
  box-shadow: 0 0 8px var(--accent-purple);
}

.legend-tip {
  margin-top: 4px;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 10px;
}

/* ==========================================================================
   Side Inspector Drawer
   ========================================================================== */
.inspector-drawer {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 320px;
  background: rgba(10, 15, 32, 0.88);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6), 0 0 25px rgba(0, 240, 255, 0.2);
  z-index: 30;
  display: none;
  flex-direction: column;
  overflow: hidden;
  animation: slideInRight 0.25s ease-out;
}

.inspector-drawer.open {
  display: flex;
}

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

.inspector-header {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.inspector-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--accent-cyan);
  letter-spacing: 1px;
}

.btn-close-inspector {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 20px;
  cursor: pointer;
  line-height: 1;
}

.btn-close-inspector:hover {
  color: #ffffff;
}

.inspector-body {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.inspected-word-title {
  font-size: 22px;
  font-weight: 800;
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 1px;
  background: linear-gradient(90deg, #ffffff, var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.metric-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.metric-col {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  padding: 10px;
  display: flex;
  flex-direction: column;
}

.metric-label {
  font-size: 9px;
  font-family: var(--font-mono);
  color: var(--text-dim);
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.metric-val {
  font-size: 16px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: #ffffff;
}

.metric-val.accent {
  color: var(--accent-cyan);
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
}

.metric-sub {
  font-size: 9px;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.vector-radar-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.vector-sparkline {
  height: 38px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 4px 6px;
}

.spark-bar {
  flex: 1;
  background: var(--accent-cyan);
  border-radius: 1px;
  transition: height 0.2s ease;
}

/* ==========================================================================
   Presets Bar (Bottom)
   ========================================================================== */
.presets-bar {
  padding: 10px 24px;
  background: rgba(7, 10, 18, 0.85);
  border-top: 1px solid rgba(0, 240, 255, 0.1);
  display: flex;
  align-items: center;
  gap: 12px;
  overflow-x: auto;
  z-index: 40;
}

.presets-label {
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--text-dim);
  white-space: nowrap;
  letter-spacing: 1px;
}

.presets-chips {
  display: flex;
  gap: 8px;
}

.chip {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  font-size: 12px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.chip:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: var(--accent-cyan);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.25);
}

/* ==========================================================================
   VIDEO GAME MODE: DUELO SEMÁNTICO (3 PANTALLAS)
   ========================================================================== */
.game-screen {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow-y: auto;
  animation: fadeIn 0.3s ease-out;
}

/* --- 1. Pantalla de Inicio (Start Screen) --- */
.start-card {
  max-width: 680px;
  width: 100%;
  background: rgba(14, 20, 42, 0.88);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7), 0 0 30px rgba(0, 240, 255, 0.2);
}

.start-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.1);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(0, 240, 255, 0.25);
  margin-bottom: 12px;
}

.start-title {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: 2px;
  background: linear-gradient(90deg, #ffffff, #67e8f9, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 6px;
}

.start-subtitle {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.start-rules-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  width: 100%;
  margin-bottom: 24px;
}

.rule-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.rule-box:hover {
  background: rgba(0, 240, 255, 0.05);
  border-color: rgba(0, 240, 255, 0.3);
  transform: translateY(-2px);
}

.rule-icon {
  font-size: 26px;
  margin-bottom: 4px;
}

.rule-heading {
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
}

.rule-desc {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.4;
}

.start-keyboard-tip {
  font-size: 12px;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.3);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.start-keyboard-tip strong {
  color: var(--accent-cyan);
}

.btn-play-start {
  font-size: 16px;
  padding: 14px 42px;
  border-radius: var(--radius-full);
  letter-spacing: 1px;
}

/* --- 2. Pantalla de Juego (Play Screen) --- */
.play-screen {
  justify-content: flex-start;
  gap: 20px;
  max-width: 1000px;
  margin: 0 auto;
}

.game-hud {
  display: flex;
  gap: 28px;
  background: rgba(14, 20, 40, 0.8);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  padding: 10px 32px;
  border-radius: var(--radius-full);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.hud-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hud-label {
  font-size: 9px;
  font-family: var(--font-mono);
  color: var(--text-dim);
  letter-spacing: 1px;
}

.hud-val {
  font-size: 18px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #ffffff;
}

.hud-val.lives {
  letter-spacing: 2px;
  font-size: 16px;
}

.hud-val.points {
  color: var(--accent-cyan);
}

.hud-val.streak {
  color: var(--accent-amber);
}

.hud-val.round {
  color: var(--accent-purple);
}

.game-instruction-banner {
  font-size: 14px;
  color: var(--text-muted);
  text-align: center;
  background: rgba(255, 255, 255, 0.03);
  padding: 8px 24px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.game-instruction-banner strong {
  color: var(--accent-cyan);
}

.duel-archetype-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.25);
  padding: 4px 16px;
  border-radius: var(--radius-full);
  margin-top: -6px;
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
}

/* Duel Arena: 2 Options around Center */
.duel-arena {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  width: 100%;
  min-height: 280px;
  margin: 10px 0;
}

.duel-option-slot {
  flex: 1;
  max-width: 260px;
  display: flex;
  justify-content: center;
}

.duel-card {
  width: 100%;
  min-height: 180px;
  background: rgba(14, 20, 42, 0.85);
  backdrop-filter: blur(14px);
  border: 2px solid rgba(168, 85, 247, 0.4);
  border-radius: var(--radius-lg);
  padding: 20px;
  cursor: pointer;
  color: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  position: relative;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
}

.duel-card:hover {
  transform: translateY(-6px) scale(1.04);
  border-color: var(--accent-cyan);
  box-shadow: 0 16px 40px rgba(0, 240, 255, 0.35);
}

.duel-key-badge {
  position: absolute;
  top: 12px;
  left: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.15);
  border: 1px solid rgba(0, 240, 255, 0.3);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.duel-card-word {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.5px;
  text-align: center;
  text-transform: uppercase;
}

.duel-metrics {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  animation: fadeIn 0.25s ease;
}

.metric-d {
  color: #ffffff;
  font-weight: 700;
}

.metric-s {
  color: var(--accent-cyan);
  font-size: 11px;
}

.duel-card.correct {
  background: rgba(16, 185, 129, 0.28);
  border-color: var(--accent-green);
  box-shadow: 0 0 35px rgba(16, 185, 129, 0.65);
  transform: scale(1.06);
}

.duel-card.incorrect {
  background: rgba(239, 68, 68, 0.28);
  border-color: #ef4444;
  box-shadow: 0 0 30px rgba(239, 68, 68, 0.55);
  animation: shakeCard 0.4s ease;
}

@keyframes shakeCard {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-8px); }
  40%, 80% { transform: translateX(8px); }
}

.duel-card.dimmed {
  opacity: 0.35;
  transform: scale(0.96);
}

/* Center Target Word */
.duel-center-slot {
  display: flex;
  align-items: center;
  justify-content: center;
}

.duel-center-core {
  position: relative;
  width: 170px;
  height: 170px;
  border-radius: 50%;
  background: radial-gradient(circle, #1e3a8a 0%, #0c1222 75%, #05070e 100%);
  border: 3px solid var(--accent-cyan);
  box-shadow: 0 0 40px rgba(0, 240, 255, 0.45), inset 0 0 25px rgba(0, 240, 255, 0.3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.core-wave {
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  border: 1px dashed rgba(0, 240, 255, 0.3);
  animation: rotateRing 20s linear infinite;
}

.core-wave.ring-2 {
  inset: -22px;
  border-color: rgba(168, 85, 247, 0.2);
  animation: rotateRing 28s linear infinite reverse;
}

@keyframes rotateRing {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.core-tag {
  font-size: 9px;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  letter-spacing: 1.5px;
  margin-bottom: 4px;
}

.core-word {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 1px;
  color: #ffffff;
  text-shadow: 0 0 14px rgba(255, 255, 255, 0.8);
  text-align: center;
  padding: 0 10px;
}

/* Duel Feedback Panel */
.duel-feedback-panel {
  width: 100%;
  max-width: 650px;
  background: rgba(14, 20, 42, 0.95);
  backdrop-filter: blur(16px);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
  animation: fadeIn 0.25s ease-out;
}

.duel-feedback-panel.is-correct {
  border-color: var(--accent-green);
  box-shadow: 0 0 25px rgba(16, 185, 129, 0.35);
}

.duel-feedback-panel.is-wrong {
  border-color: #ef4444;
  box-shadow: 0 0 25px rgba(239, 68, 68, 0.35);
}

.duel-feedback-title {
  font-size: 16px;
  font-weight: 800;
}

.duel-feedback-panel.is-correct .duel-feedback-title {
  color: var(--accent-green);
}

.duel-feedback-panel.is-wrong .duel-feedback-title {
  color: #ef4444;
}

.duel-feedback-detail {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.duel-feedback-detail strong {
  color: #ffffff;
}

/* --- 3. Pantalla de Score Final (Game Over Screen) --- */
.gameover-card {
  max-width: 640px;
  width: 100%;
  background: rgba(14, 20, 42, 0.92);
  backdrop-filter: blur(18px);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.7);
  animation: fadeIn 0.35s ease-out;
}

.gameover-card.victory {
  border: 2px solid var(--accent-green);
  box-shadow: 0 0 45px rgba(16, 185, 129, 0.35);
}

.gameover-card.defeat {
  border: 2px solid #ef4444;
  box-shadow: 0 0 45px rgba(239, 68, 68, 0.3);
}

.result-banner {
  text-align: center;
}

.result-icon {
  font-size: 48px;
  margin-bottom: 8px;
}

.result-title {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 1px;
}

.gameover-card.victory .result-title {
  color: var(--accent-green);
}

.gameover-card.defeat .result-title {
  color: #ef4444;
}

.result-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.rank-card {
  width: 100%;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.rank-icon {
  font-size: 32px;
}

.rank-info {
  display: flex;
  flex-direction: column;
}

.rank-sub {
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--text-dim);
  letter-spacing: 1px;
}

.rank-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--accent-cyan);
}

.gameover-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  width: 100%;
}

.stat-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  padding: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 4px;
}

.stat-label {
  font-size: 9px;
  font-family: var(--font-mono);
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

.stat-val {
  font-size: 20px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #ffffff;
}

.stat-val.highlight {
  color: var(--accent-cyan);
}

.stat-val.streak {
  color: var(--accent-amber);
}

.gameover-actions {
  display: flex;
  gap: 14px;
  width: 100%;
  margin-top: 6px;
}

.gameover-actions .btn {
  flex: 1;
  padding: 12px;
  font-size: 14px;
}

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-card {
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  max-width: 540px;
  width: 90%;
  padding: 24px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8), 0 0 30px rgba(0, 240, 255, 0.25);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.modal-header h3 {
  font-size: 17px;
  color: #ffffff;
}

.btn-close-modal {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 24px;
  cursor: pointer;
}

.modal-body {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-body strong {
  color: var(--accent-cyan);
}

.modal-body ul {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .app-header {
    padding: 0 12px;
    height: auto;
    flex-wrap: wrap;
    gap: 10px;
    padding-bottom: 8px;
  }
  .nav-tab .tab-text {
    display: none;
  }
  .explorer-control-bar {
    padding: 10px 14px;
  }
  .inspector-drawer {
    width: calc(100% - 40px);
    right: 20px;
    left: 20px;
  }
  .game-center-target {
    width: 140px;
    height: 140px;
  }
  .target-word {
    font-size: 18px;
  }
}

/* ==========================================================================
   3D COSMOS VISUALIZER
   ========================================================================== */
.cosmos-container {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
  background: #03050c;
}

.cosmos-container canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
  cursor: grab;
}

.cosmos-container canvas:active {
  cursor: grabbing;
}

/* Center Crosshair */
.cosmos-crosshair {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 18px;
  height: 18px;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 10;
}

.cosmos-crosshair::before,
.cosmos-crosshair::after {
  content: '';
  position: absolute;
  background: rgba(0, 240, 255, 0.7);
  box-shadow: 0 0 6px rgba(0, 240, 255, 0.8);
}

.cosmos-crosshair::before {
  top: 8px;
  left: 0;
  width: 18px;
  height: 2px;
}

.cosmos-crosshair::after {
  top: 0;
  left: 8px;
  width: 2px;
  height: 18px;
}

/* Cosmos Top Search Bar */
.cosmos-top-bar {
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 20;
  background: rgba(10, 15, 32, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.cosmos-search-box {
  display: flex;
  align-items: center;
  gap: 8px;
}

#cosmos-search-input {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  padding: 6px 16px;
  font-size: 13px;
  color: #ffffff;
  width: 260px;
  outline: none;
  font-family: var(--font-sans);
  transition: all 0.2s ease;
}

#cosmos-search-input:focus {
  width: 320px;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 14px rgba(0, 240, 255, 0.35);
}

/* Flight Controls Guide HUD */
.cosmos-controls-guide {
  position: absolute;
  bottom: 20px;
  left: 20px;
  background: rgba(8, 12, 26, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(0, 240, 255, 0.28);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 20;
  pointer-events: none;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.65), 0 0 20px rgba(0, 240, 255, 0.08);
  min-width: 280px;
}

.guide-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.guide-icon {
  font-size: 13px;
}

.guide-title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  color: var(--accent-cyan);
  letter-spacing: 1.2px;
  text-transform: uppercase;
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
}

.guide-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  row-gap: 6px;
  column-gap: 14px;
  align-items: center;
}

.guide-cell.key-cell {
  display: flex;
  align-items: center;
  gap: 4px;
  justify-content: flex-start;
  white-space: nowrap;
}

.guide-cell.label-cell {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
}

.guide-cell .cyan {
  color: var(--accent-cyan);
  font-weight: 600;
}

.guide-cell .purple {
  color: var(--accent-purple);
  font-weight: 600;
}

.cosmos-controls-guide kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  color: #e2e8f0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.04) 100%);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-bottom: 2px solid rgba(255, 255, 255, 0.38);
  border-radius: 4px;
  padding: 1px 6px;
  min-width: 20px;
  height: 20px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.35);
  box-sizing: border-box;
}

.cosmos-controls-guide kbd.highlight {
  color: #ffffff;
  border-color: rgba(0, 240, 255, 0.5);
  border-bottom-color: var(--accent-cyan);
  background: linear-gradient(180deg, rgba(0, 240, 255, 0.3) 0%, rgba(0, 240, 255, 0.1) 100%);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
}

/* Cosmos Telemetry HUD */
.cosmos-hud-telemetry {
  position: absolute;
  bottom: 20px;
  right: 20px;
  background: rgba(8, 12, 26, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(168, 85, 247, 0.35);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  z-index: 20;
  pointer-events: none;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.65), 0 0 20px rgba(168, 85, 247, 0.12);
  min-width: 230px;
}

.telemetry-item {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  font-family: var(--font-mono);
  font-size: 11px;
}

.tel-label {
  color: var(--text-dim);
}

.tel-val {
  color: #ffffff;
  font-weight: 700;
}

.tel-val.highlight {
  color: var(--accent-cyan);
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
}

/* ==========================================================================
   Cosmos Calibration Panel (Ajustes 3D en Tiempo Real)
   ========================================================================== */
.cosmos-calibration-panel {
  position: absolute;
  top: 76px;
  right: 20px;
  width: 330px;
  background: rgba(8, 12, 28, 0.94);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 240, 255, 0.35);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.75), 0 0 25px rgba(0, 240, 255, 0.12);
  z-index: 50;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: fadeInDown 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.calib-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: rgba(0, 240, 255, 0.05);
  border-bottom: 1px solid rgba(0, 240, 255, 0.18);
}

.calib-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

.calib-badge {
  font-size: 9px;
  color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.15);
  padding: 1px 6px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(0, 240, 255, 0.3);
}

.btn-close-calib {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
  transition: color 0.2s;
}

.btn-close-calib:hover {
  color: #ffffff;
}

.calib-body {
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 13px;
  max-height: 75vh;
  overflow-y: auto;
}

.calib-control-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.calib-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--text-main);
}

.calib-label-row label {
  font-weight: 600;
}

.calib-val {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.1);
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid rgba(0, 240, 255, 0.25);
}

.calib-control-group input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 5px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
  transition: background 0.2s;
}

.calib-control-group input[type="range"]:hover {
  background: rgba(0, 240, 255, 0.25);
}

.calib-control-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--accent-cyan);
  border: 2px solid #ffffff;
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.8);
  cursor: pointer;
  transition: transform 0.1s;
}

.calib-control-group input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.calib-control-group input[type="range"]::-moz-range-thumb {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--accent-cyan);
  border: 2px solid #ffffff;
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.8);
  cursor: pointer;
}

.calib-hint {
  font-size: 10px;
  color: var(--text-dim);
  line-height: 1.3;
}

.calib-footer {
  padding-top: 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.calib-footer .btn {
  width: 100%;
  font-size: 11px;
  padding: 6px 12px;
}

.calib-select {
  background: rgba(14, 20, 42, 0.95);
  border: 1px solid rgba(0, 240, 255, 0.3);
  border-radius: var(--radius-sm);
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 12px;
  padding: 6px 10px;
  outline: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.calib-select:focus,
.calib-select:hover {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.25);
}

.calib-select option {
  background: #090e1f;
  color: #ffffff;
}

.calib-toast {
  margin-top: 8px;
  padding: 6px 10px;
  background: rgba(16, 185, 129, 0.2);
  border: 1px solid var(--accent-green);
  border-radius: var(--radius-sm);
  font-size: 11px;
  color: #a7f3d0;
  text-align: center;
  font-family: var(--font-mono);
  animation: fadeInDown 0.2s ease;
}

/* ==========================================================================
   HUB / PORTAL DE EXPERIENCIAS
   ========================================================================== */
.hub-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 30px 20px 60px;
}

.hub-hero {
  text-align: center;
  margin-bottom: 40px;
}

.hub-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.12);
  border: 1px solid rgba(0, 240, 255, 0.3);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  letter-spacing: 1.5px;
  display: inline-block;
  margin-bottom: 12px;
}

.hub-title {
  font-size: 38px;
  font-weight: 800;
  background: linear-gradient(90deg, #ffffff 0%, #67e8f9 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.hub-description {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.6;
}

.hub-description strong {
  color: #ffffff;
}

.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 22px;
}

.hub-card {
  background: rgba(14, 20, 42, 0.75);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  position: relative;
  text-decoration: none;
  color: inherit;
}

.hub-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-cyan);
  box-shadow: 0 16px 36px rgba(0, 240, 255, 0.25);
  background: rgba(18, 26, 54, 0.9);
}

.hub-card.featured {
  border-color: rgba(168, 85, 247, 0.45);
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.12) 0%, rgba(14, 20, 42, 0.85) 100%);
}

.hub-card.featured:hover {
  border-color: var(--accent-purple);
  box-shadow: 0 16px 40px rgba(168, 85, 247, 0.35);
}

.hub-card-icon {
  font-size: 36px;
  line-height: 1;
}

.hub-card-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.hub-card-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  color: var(--accent-purple);
  background: rgba(168, 85, 247, 0.18);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  align-self: flex-start;
  letter-spacing: 1px;
}

.hub-card-tag.external-tag {
  color: var(--accent-amber);
  background: rgba(245, 158, 11, 0.18);
}

.hub-card-title {
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
}

.hub-card-text {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
  flex: 1;
}

.hub-card .btn {
  margin-top: 10px;
  text-align: center;
}

/* ==========================================================================
   MEDIDOR DE DISTANCIA SEMÁNTICA
   ========================================================================== */
.distance-calc-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px 20px 60px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.calc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.calc-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  color: var(--accent-cyan);
  letter-spacing: 1.5px;
}

.calc-title-box h2 {
  font-size: 26px;
  font-weight: 800;
  color: #ffffff;
  margin-top: 4px;
}

.calc-sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.ref-word-card {
  background: rgba(14, 20, 42, 0.85);
  backdrop-filter: blur(14px);
  border: 2px solid var(--accent-cyan);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: 0 12px 30px rgba(0, 240, 255, 0.2);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ref-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.ref-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  color: var(--accent-cyan);
  letter-spacing: 1px;
}

.ref-status {
  font-size: 12px;
  padding: 2px 10px;
  border-radius: var(--radius-full);
}

.ref-status.valid {
  color: #a7f3d0;
  background: rgba(16, 185, 129, 0.2);
}

.ref-status.invalid {
  color: #fca5a5;
  background: rgba(239, 68, 68, 0.2);
}

.ref-input-group {
  display: flex;
  gap: 12px;
}

.input-with-icon {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.input-with-icon .icon {
  position: absolute;
  left: 14px;
  font-size: 18px;
}

.input-with-icon input {
  width: 100%;
  background: rgba(6, 10, 24, 0.8);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-md);
  padding: 12px 14px 12px 44px;
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  outline: none;
}

.input-with-icon input:focus {
  border-color: #ffffff;
  box-shadow: 0 0 16px rgba(0, 240, 255, 0.4);
}

.comp-section-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 10px;
}

.comp-title {
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
}

.comp-actions {
  display: flex;
  gap: 8px;
}

.add-word-bar {
  display: flex;
  gap: 10px;
  position: relative;
}

.add-word-bar input {
  flex: 1;
  background: rgba(14, 20, 42, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  color: #ffffff;
  font-size: 14px;
  outline: none;
}

.add-word-bar input:focus {
  border-color: var(--accent-purple);
}

.comp-results-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.distance-card {
  background: rgba(14, 20, 42, 0.8);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: all 0.2s ease;
}

.distance-card:hover {
  border-color: rgba(0, 240, 255, 0.5);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.card-top-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-word-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.card-rank {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  color: var(--text-dim);
}

.card-word-title {
  font-size: 18px;
  font-weight: 800;
  color: #ffffff;
  text-transform: uppercase;
}

.card-category-badge {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
}

.card-category-badge.badge-close {
  color: #a7f3d0;
  background: rgba(16, 185, 129, 0.2);
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.card-category-badge.badge-medium {
  color: #67e8f9;
  background: rgba(6, 182, 212, 0.2);
  border: 1px solid rgba(6, 182, 212, 0.4);
}

.card-category-badge.badge-far {
  color: #fde047;
  background: rgba(245, 158, 11, 0.2);
  border: 1px solid rgba(245, 158, 11, 0.4);
}

.card-category-badge.badge-opposite {
  color: #f472b6;
  background: rgba(236, 72, 153, 0.2);
  border: 1px solid rgba(236, 72, 153, 0.4);
}

.card-twin-badge {
  font-size: 10px;
  color: #fde047;
  background: rgba(234, 179, 8, 0.15);
  border: 1px solid rgba(234, 179, 8, 0.3);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.card-actions-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-make-ref {
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid rgba(0, 240, 255, 0.3);
  color: var(--accent-cyan);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-make-ref:hover {
  background: var(--accent-cyan);
  color: #000000;
  font-weight: 700;
}

.btn-remove-card {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.btn-remove-card:hover {
  color: #ef4444;
}

.card-meter-bg {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  overflow: hidden;
}

.card-meter-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.4s ease;
}

.card-metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.metric-box {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
}

.metric-box .m-label {
  font-size: 9px;
  font-family: var(--font-mono);
  color: var(--text-dim);
}

.metric-box .m-val {
  font-size: 16px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #ffffff;
}

.metric-box .m-val.highlight {
  color: var(--accent-cyan);
}

.metric-box .m-sub {
  font-size: 9px;
  color: var(--text-dim);
}

.calc-empty-state {
  text-align: center;
  padding: 40px;
  background: rgba(14, 20, 42, 0.5);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
}

.calc-empty-state .icon {
  font-size: 40px;
  display: block;
  margin-bottom: 10px;
}

/* ==========================================================================
   BIBLIOTECA DE CLUSTERS
   ========================================================================== */
.cluster-lib-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 60px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.cluster-lib-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
}

.lib-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  color: var(--accent-purple);
  letter-spacing: 1.5px;
}

.cluster-lib-header h2 {
  font-size: 26px;
  font-weight: 800;
  color: #ffffff;
  margin-top: 4px;
}

.cluster-lib-header .sub-text {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
  max-width: 650px;
}

.btn-save-large {
  font-size: 14px;
  font-weight: 800;
  padding: 12px 24px;
  letter-spacing: 1px;
}

.cluster-toast {
  background: rgba(16, 185, 129, 0.2);
  border: 1px solid var(--accent-green);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  color: #a7f3d0;
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  animation: fadeInDown 0.2s ease;
}

.clusters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.cluster-card {
  background: rgba(14, 20, 42, 0.85);
  backdrop-filter: blur(14px);
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  transition: all 0.25s ease;
}

.cluster-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.7);
}

.cluster-card-header {
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.cluster-card-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
}

.cluster-color-picker {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid #ffffff;
  cursor: pointer;
  background: transparent;
  padding: 0;
}

.cluster-color-picker::-webkit-color-swatch-wrapper {
  padding: 0;
}

.cluster-color-picker::-webkit-color-swatch {
  border: none;
  border-radius: 50%;
}

.cluster-name-input {
  background: transparent;
  border: none;
  color: #ffffff;
  font-size: 16px;
  font-weight: 800;
  outline: none;
  width: 100%;
  font-family: var(--font-sans);
}

.cluster-name-input:focus {
  border-bottom: 1px solid var(--accent-cyan);
}

.btn-delete-cluster {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 22px;
  cursor: pointer;
}

.btn-delete-cluster:hover {
  color: #ef4444;
}

.cluster-card-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.add-word-to-cluster-bar {
  display: flex;
  gap: 8px;
}

.input-add-cluster-word {
  flex: 1;
  background: rgba(6, 10, 24, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  color: #ffffff;
  font-size: 12px;
  outline: none;
}

.words-tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 80px;
  align-content: flex-start;
}

.word-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid;
  font-size: 12px;
  font-weight: 600;
  color: #ffffff;
}

.word-tag.not-in-vocab {
  opacity: 0.6;
  text-decoration: line-through;
}

.btn-remove-tag {
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  cursor: pointer;
  line-height: 1;
}

.btn-remove-tag:hover {
  color: #ef4444;
}

.cluster-card-footer {
  padding: 10px 16px;
  background: rgba(0, 0, 0, 0.25);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--text-dim);
}

.clusters-empty {
  text-align: center;
  grid-column: 1 / -1;
  padding: 60px;
  background: rgba(14, 20, 42, 0.4);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
}

.clusters-empty span {
  font-size: 48px;
  display: block;
  margin-bottom: 12px;
}

/* ==========================================================================
   UNIVERSO 3D POR CÚMULOS
   ========================================================================== */
.cluster-3d-top-bar {
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 20;
  background: rgba(10, 15, 32, 0.88);
  backdrop-filter: blur(14px);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  max-width: 90%;
  overflow-x: auto;
}

.cluster-3d-top-bar .bar-title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  color: var(--accent-purple);
  letter-spacing: 1px;
}

.cluster-3d-nav-bar {
  display: flex;
  gap: 8px;
}

.btn-cluster-warp {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid;
  border-radius: var(--radius-full);
  color: #ffffff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.btn-cluster-warp:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-cluster-warp .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.btn-fullscreen-cosmos {
  background: rgba(0, 240, 255, 0.12);
  border: 1px solid rgba(0, 240, 255, 0.4);
  color: #00f0ff;
  border-radius: var(--radius-full);
  font-size: 11.5px;
  font-weight: 700;
  padding: 5px 14px;
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-left: 8px;
}

.btn-fullscreen-cosmos:hover {
  background: rgba(0, 240, 255, 0.25);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.45);
  color: #ffffff;
  transform: translateY(-2px);
}

/* ==========================================================================
   Cyberpunk Custom Scrollbar
   ========================================================================== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(7, 10, 18, 0.7);
}

::-webkit-scrollbar-thumb {
  background: rgba(0, 240, 255, 0.25);
  border-radius: 4px;
  border: 1px solid rgba(0, 240, 255, 0.15);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 240, 255, 0.55);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.6);
}

/* ==========================================================================
   Mini Ref Arrow Button (Distance Calculator)
   ========================================================================== */
.btn-mini-ref-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: rgba(0, 240, 255, 0.12);
  border: 1px solid rgba(0, 240, 255, 0.35);
  color: var(--accent-cyan);
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 0;
  line-height: 1;
}

.btn-mini-ref-arrow:hover {
  background: var(--accent-cyan);
  color: #070a12;
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.6);
  transform: scale(1.12);
}

/* ==========================================================================
   Cluster Library: Auto-Mapper, +w Button & Color Palette
   ========================================================================== */
.cluster-automap-container {
  background: rgba(14, 20, 42, 0.85);
  border: 1px solid rgba(0, 240, 255, 0.3);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin-bottom: 24px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
}

.cluster-automap-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.automap-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.12);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.automap-input-bar {
  display: flex;
  gap: 10px;
  align-items: center;
}

.automap-input-bar input {
  flex: 1;
  background: rgba(8, 12, 24, 0.9);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: #ffffff;
  padding: 10px 14px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease;
}

.automap-input-bar input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.25);
}

.automap-result-card {
  margin-top: 14px;
  padding: 12px 16px;
  background: rgba(18, 26, 54, 0.9);
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  animation: fadeIn 0.3s ease;
}

.automap-result-text {
  font-size: 14px;
  color: #e2e8f0;
}

.automap-result-text strong {
  color: var(--accent-cyan);
}

.btn-auto-add-word {
  background: rgba(168, 85, 247, 0.18);
  border: 1px solid rgba(168, 85, 247, 0.5);
  color: #c084fc;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 13px;
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-auto-add-word:hover {
  background: #a855f7;
  color: #ffffff;
  box-shadow: 0 0 12px rgba(168, 85, 247, 0.6);
  transform: scale(1.06);
}

.cluster-color-palette {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  padding: 6px 10px;
  background: rgba(8, 12, 26, 0.5);
  border-radius: 8px;
}

.color-swatch-btn {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.4);
  cursor: pointer;
  padding: 0;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.color-swatch-btn:hover {
  transform: scale(1.25);
  border-color: #ffffff;
  box-shadow: 0 0 8px currentColor;
}

.color-swatch-btn.active {
  border: 2px solid #ffffff;
  transform: scale(1.2);
}