/* ==========================================================================
   PlasmaLab - Simulador Interactivo de Física y Dinámica de Plasma
   Estilos Canónicos Fijate Tools (Dark/Light responsive)
   ========================================================================== */

:root {
  --plasma-bg: #07090e;
  --plasma-surface: #0f141e;
  --plasma-surface-hover: #161e2e;
  --plasma-surface-border: #1e293b;
  --plasma-primary: #ff5500;
  --plasma-primary-hover: #ff7722;
  --plasma-primary-glow: rgba(255, 85, 0, 0.35);
  --plasma-accent: #00d2ff;
  --plasma-accent-glow: rgba(0, 210, 255, 0.3);
  --plasma-text: #f1f5f9;
  --plasma-text-secondary: #94a3b8;
  --plasma-text-muted: #64748b;
  --plasma-danger: #ef4444;
  --plasma-success: #10b981;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 24px rgba(255, 85, 0, 0.2);
}

[data-theme="light"] {
  --plasma-bg: #f8fafc;
  --plasma-surface: #ffffff;
  --plasma-surface-hover: #f1f5f9;
  --plasma-surface-border: #cbd5e1;
  --plasma-text: #0f172a;
  --plasma-text-secondary: #334155;
  --plasma-text-muted: #64748b;
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.08);
}

/* --------------------------------------------------------------------------
   Layout base
   -------------------------------------------------------------------------- */
body {
  margin: 0;
  padding: 0;
  background-color: var(--plasma-bg);
  color: var(--plasma-text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  margin-top: 0;
  letter-spacing: -0.015em;
  font-weight: 700;
}

.mono-text {
  font-family: 'JetBrains Mono', monospace;
}

.tool-layout {
  max-width: 1240px;
  margin: 1.5rem auto 3.5rem;
  padding: 0 1rem;
  width: 100%;
  box-sizing: border-box;
}

.tool-with-sidebar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 1536px) {
  .tool-with-sidebar {
    grid-template-columns: 1fr 300px;
  }
}

.tool-main-content {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  min-width: 0;
}

/* --------------------------------------------------------------------------
   Encabezado de la herramienta e introducción
   -------------------------------------------------------------------------- */
.plasma-hero {
  background: linear-gradient(135deg, rgba(255, 85, 0, 0.08) 0%, rgba(0, 210, 255, 0.04) 100%), var(--plasma-surface);
  border: 1px solid var(--plasma-surface-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.hero-badge-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.plasma-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  background: rgba(255, 85, 0, 0.15);
  color: #ff7722;
  border: 1px solid rgba(255, 85, 0, 0.3);
}

.plasma-badge-secondary {
  background: rgba(0, 210, 255, 0.12);
  color: #00d2ff;
  border-color: rgba(0, 210, 255, 0.3);
}

.plasma-title {
  font-size: clamp(1.6rem, 3.2vw, 2.3rem);
  line-height: 1.2;
  margin-bottom: 0.6rem;
  color: var(--plasma-text);
}

.plasma-subtitle {
  color: var(--plasma-text-secondary);
  font-size: 1.02rem;
  line-height: 1.55;
  margin: 0;
  max-width: 850px;
}

/* --------------------------------------------------------------------------
   Pestañas de selección de modo
   -------------------------------------------------------------------------- */
.mode-tabs-wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.6rem;
  background: var(--plasma-surface);
  border: 1px solid var(--plasma-surface-border);
  border-radius: var(--radius-md);
  padding: 0.5rem;
}

.mode-tab-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 44px;
  padding: 0.65rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--plasma-text-secondary);
  font-family: 'Inter', sans-serif;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.mode-tab-btn:hover {
  background: var(--plasma-surface-hover);
  color: var(--plasma-text);
}

.mode-tab-btn.active {
  background: linear-gradient(135deg, #ff5500, #ff7722);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 14px rgba(255, 85, 0, 0.35);
}

/* --------------------------------------------------------------------------
   Lienzo interactivo de simulación y visor
   -------------------------------------------------------------------------- */
.plasma-stage-card {
  background: var(--plasma-surface);
  border: 1px solid var(--plasma-surface-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  position: relative;
  display: flex;
  flex-direction: column;
}

.stage-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: rgba(10, 14, 22, 0.9);
  border-bottom: 1px solid var(--plasma-surface-border);
  flex-wrap: wrap;
  gap: 0.5rem;
}

.stage-title-indicator {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--plasma-text);
}

.live-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--plasma-primary);
  box-shadow: 0 0 10px var(--plasma-primary);
  animation: pulseLive 1.8s infinite;
}

@keyframes pulseLive {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.6; }
  100% { transform: scale(1); opacity: 1; }
}

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

.btn-stage-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 40px;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--plasma-surface-border);
  background: var(--plasma-surface);
  color: var(--plasma-text-secondary);
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-stage-action:hover {
  background: var(--plasma-surface-hover);
  color: var(--plasma-text);
  border-color: #3b82f6;
}

.btn-stage-action.active {
  background: rgba(255, 85, 0, 0.18);
  border-color: var(--plasma-primary);
  color: #ff8833;
}

.canvas-viewport-wrapper {
  position: relative;
  width: 100%;
  height: 580px;
  background-color: #020408;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: crosshair;
  box-shadow: inset 0 0 100px rgba(0, 0, 0, 0.95);
  overflow: hidden;
}

@media (max-width: 768px) {
  .canvas-viewport-wrapper {
    height: 420px;
  }
}

#plasma-canvas {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none; /* Evita que el scroll del navegador interfiera con los dedos */
}

/* --------------------------------------------------------------------------
   Barra de telemetría física en tiempo real
   -------------------------------------------------------------------------- */
.telemetry-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.5rem;
  padding: 0.85rem 1rem;
  background: rgba(10, 14, 22, 0.95);
  border-top: 1px solid var(--plasma-surface-border);
}

.telemetry-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.telemetry-label {
  font-size: 0.72rem;
  color: var(--plasma-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
}

.telemetry-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.96rem;
  font-weight: 700;
  color: #ff9944;
}

.telemetry-val-accent {
  color: var(--plasma-accent);
}

.telemetry-val-fps {
  color: var(--plasma-success);
}

/* --------------------------------------------------------------------------
   Consola de controles físicos y parámetros
   -------------------------------------------------------------------------- */
.controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.control-card {
  background: var(--plasma-surface);
  border: 1px solid var(--plasma-surface-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
}

.control-card-title {
  font-size: 1.05rem;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--plasma-text);
  border-bottom: 1px solid var(--plasma-surface-border);
  padding-bottom: 0.6rem;
}

.control-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.control-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--plasma-text-secondary);
}

.control-val-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.84rem;
  font-weight: 600;
  color: #ff8833;
  background: rgba(255, 85, 0, 0.1);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

/* Sliders táctiles */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 7px;
  background: var(--plasma-surface-hover);
  border-radius: 5px;
  outline: none;
  margin: 0.4rem 0;
  border: 1px solid var(--plasma-surface-border);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--plasma-primary);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(255, 85, 0, 0.5);
  transition: transform 0.1s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

input[type="range"]::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--plasma-primary);
  cursor: pointer;
  border: none;
  box-shadow: 0 0 10px rgba(255, 85, 0, 0.5);
}

/* Desplegables <select> conforme a reglas móviles canónicas */
select.plasma-select {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  min-height: 42px;
  padding: 0.5rem 0.75rem;
  background-color: var(--plasma-surface-hover);
  color: var(--plasma-text);
  border: 1px solid var(--plasma-surface-border);
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 0.92rem;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  box-sizing: border-box;
  outline: none;
  cursor: pointer;
}

select.plasma-select:focus {
  border-color: var(--plasma-primary);
  box-shadow: 0 0 0 2px var(--plasma-primary-glow);
}

/* Grupo de botones de imanes */
.magnet-buttons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
  gap: 0.5rem;
}

.btn-magnet {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}

.btn-magnet-n {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.3);
}

.btn-magnet-n:hover {
  background: rgba(239, 68, 68, 0.28);
}

.btn-magnet-s {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border-color: rgba(59, 130, 246, 0.3);
}

.btn-magnet-s:hover {
  background: rgba(59, 130, 246, 0.28);
}

.btn-magnet-clear {
  background: var(--plasma-surface-hover);
  color: var(--plasma-text-secondary);
  border-color: var(--plasma-surface-border);
}

.btn-magnet-clear:hover {
  color: var(--plasma-text);
  background: var(--plasma-surface-border);
}

/* --------------------------------------------------------------------------
   Sección didáctica y científica
   -------------------------------------------------------------------------- */
.edu-section {
  background: var(--plasma-surface);
  border: 1px solid var(--plasma-surface-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  box-shadow: var(--shadow-sm);
}

.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1.25rem;
}

.edu-card {
  background: var(--plasma-surface-hover);
  border: 1px solid var(--plasma-surface-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.edu-card h3 {
  font-size: 1.15rem;
  color: var(--plasma-text);
  margin-bottom: 0.6rem;
}

.edu-card p {
  color: var(--plasma-text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
  margin: 0 0 0.8rem;
}

.edu-card p:last-child {
  margin-bottom: 0;
}

.formula-box {
  background: rgba(0, 0, 0, 0.35);
  border-left: 3px solid var(--plasma-primary);
  padding: 0.6rem 0.8rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88rem;
  color: #ffbb66;
  margin: 0.6rem 0;
}

/* --------------------------------------------------------------------------
   Preguntas frecuentes (FAQ Accordion / Semántica)
   -------------------------------------------------------------------------- */
.faq-section {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.faq-item {
  background: var(--plasma-surface);
  border: 1px solid var(--plasma-surface-border);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.35rem;
}

.faq-item h3 {
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
  color: var(--plasma-text);
}

.faq-item p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--plasma-text-secondary);
  line-height: 1.55;
}

/* --------------------------------------------------------------------------
   Modal canónico (sustituto estricto de window.alert)
   -------------------------------------------------------------------------- */
.plasma-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(5px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  box-sizing: border-box;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.plasma-modal-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.plasma-modal-card {
  background: var(--plasma-surface);
  border: 1px solid var(--plasma-surface-border);
  border-radius: var(--radius-lg);
  max-width: 580px;
  width: 100%;
  padding: 1.5rem 1.75rem;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
  transform: translateY(12px);
  transition: transform 0.2s ease;
}

.plasma-modal-overlay.visible .plasma-modal-card {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--plasma-surface-border);
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
}

.modal-header h3 {
  font-size: 1.25rem;
  margin: 0;
  color: var(--plasma-text);
}

.modal-close-icon-btn {
  background: transparent;
  border: none;
  color: var(--plasma-text-muted);
  cursor: pointer;
  padding: 0.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close-icon-btn:hover {
  color: var(--plasma-text);
}

.modal-body {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--plasma-text-secondary);
  margin-bottom: 1.25rem;
}

.modal-body ul {
  padding-left: 1.25rem;
  margin: 0.6rem 0;
}

.modal-body li {
  margin-bottom: 0.4rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
}

.btn-modal-primary {
  min-height: 42px;
  padding: 0 1.5rem;
  background: var(--plasma-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease;
}

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