/**
 * Fijate Tools - Laboratorio 3D de Termodinámica y Ciclos de Motores Térmicos
 * style.css - Estilos corporativos, HUD de instrumentación, diagramas duales y modales
 */

:root {
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Colores canónicos modo oscuro */
  --bg-app: #0b0f17;
  --bg-card: #0f172a;
  --bg-card-subtle: #131d31;
  --bg-surface: #1e293b;
  --bg-surface-hover: #334155;
  --border-card: #1e293b;
  --border-strong: #334155;

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

  --color-primary: #38bdf8;
  --color-primary-glow: rgba(56, 189, 248, 0.2);
  --color-accent-amber: #f59e0b;
  --color-accent-red: #ef4444;
  --color-accent-emerald: #10b981;
  --color-accent-purple: #a855f7;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;

  --shadow-card: 0 4px 20px -2px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.15);
}

[data-theme="light"] {
  --bg-app: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-subtle: #f1f5f9;
  --bg-surface: #e2e8f0;
  --bg-surface-hover: #cbd5e1;
  --border-card: #e2e8f0;
  --border-strong: #cbd5e1;

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #64748b;

  --color-primary: #0284c7;
  --color-primary-glow: rgba(2, 132, 199, 0.15);
  --color-accent-amber: #d97706;
  --color-accent-red: #dc2626;
  --color-accent-emerald: #059669;
  --color-accent-purple: #9333ea;

  --shadow-card: 0 4px 18px -2px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 20px rgba(2, 132, 199, 0.1);
}

/* Reset y base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.5;
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Layout canónico */
.tool-layout {
  max-width: 1320px;
  width: 100%;
  margin: 1.5rem auto 3rem;
  padding: 0 1rem;
  flex: 1 0 auto;
}

.tool-with-sidebar {
  display: flex;
  gap: 1.75rem;
  align-items: flex-start;
}

.tool-main-content {
  flex: 1 1 0%;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Sidebar publicitario desktop sticky */
.tool-ad-sidebar {
  display: none;
  width: 300px;
  flex-shrink: 0;
  position: sticky;
  top: 1.5rem;
}

@media (min-width: 1536px) {
  .tool-ad-sidebar {
    display: block;
  }
}

/* Encabezado descriptivo de la suite */
.suite-intro-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-card);
}

.suite-header-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.suite-title-group h2 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.suite-title-group p {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.suite-action-buttons {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.btn-pill-info {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.95rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-strong);
  background-color: var(--bg-surface);
  color: var(--text-main);
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 40px;
  transition: all 0.2s ease;
}

.btn-pill-info:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Panel de KPIs instantáneos */
.kpis-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 0.85rem;
}

.kpi-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.kpi-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

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

.kpi-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

.kpi-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary-glow);
  color: var(--color-primary);
}

.kpi-value {
  font-family: var(--font-mono);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-main);
}

.kpi-subtext {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Contenedor principal del laboratorio (Split View) */
.lab-workspace {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 1024px) {
  .lab-workspace {
    grid-template-columns: 1.05fr 1fr;
  }
}

/* Tarjeta del Visor 3D */
.viewport-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
}

.viewport-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background-color: var(--bg-card-subtle);
  border-bottom: 1px solid var(--border-card);
  flex-wrap: wrap;
  gap: 0.5rem;
}

.viewport-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.viewport-tools {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-tool-icon {
  width: 36px;
  height: 36px;
  min-height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background-color: var(--bg-surface);
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-tool-icon:hover, .btn-tool-icon.active {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

/* Área WebGL 3D con HUD flotante */
.viewport-stage {
  position: relative;
  width: 100%;
  height: 480px;
  min-height: 400px;
  background-color: #0b0f17;
  overflow: hidden;
}

[data-theme="light"] .viewport-stage {
  background-color: #f8fafc;
}

#viewport-3d-canvas {
  width: 100%;
  height: 100%;
}

/* HUD flotante en la escena 3D */
.hud-telemetry {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
  z-index: 10;
}

.hud-badge-phase {
  align-self: flex-start;
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
  letter-spacing: 0.02em;
}

.hud-readings-box {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 0.6rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #f8fafc;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

.hud-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.hud-var {
  color: #94a3b8;
  font-size: 0.75rem;
}

.hud-val {
  font-weight: 700;
  color: #38bdf8;
}

/* Barra inferior de controles de reproducción */
.playback-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  background-color: var(--bg-card-subtle);
  border-top: 1px solid var(--border-card);
  flex-wrap: wrap;
  gap: 0.75rem;
}

.playback-buttons {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-ctrl {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-strong);
  background-color: var(--bg-surface);
  color: var(--text-main);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 40px;
  transition: all 0.2s ease;
}

.btn-ctrl:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--color-primary);
}

.btn-ctrl.btn-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}

.btn-ctrl.btn-primary:hover {
  filter: brightness(1.1);
}

.playback-speed-group {
  display: flex;
  align-items: center;
  background-color: var(--bg-surface);
  border-radius: var(--radius-md);
  padding: 2px;
  border: 1px solid var(--border-strong);
}

.btn-speed {
  padding: 0.35rem 0.65rem;
  font-size: 0.78rem;
  font-weight: 700;
  border: none;
  background: transparent;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  min-height: 36px;
  transition: all 0.15s;
}

.btn-speed.active {
  background-color: var(--color-primary);
  color: #ffffff;
}

/* Tarjeta de Diagramas P-V y T-S */
.diagrams-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
}

.diagrams-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background-color: var(--bg-card-subtle);
  border-bottom: 1px solid var(--border-card);
  flex-wrap: wrap;
  gap: 0.5rem;
}

.diagram-tabs {
  display: flex;
  background-color: var(--bg-surface);
  border-radius: var(--radius-md);
  padding: 2px;
  border: 1px solid var(--border-strong);
}

.btn-diagram-tab {
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  border: none;
  background: transparent;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  min-height: 36px;
  transition: all 0.15s;
}

.btn-diagram-tab.active {
  background-color: var(--color-primary);
  color: #ffffff;
}

.diagrams-viewport {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  background-color: var(--bg-card);
}

.canvas-wrapper {
  position: relative;
  width: 100%;
  height: 240px;
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

/* Panel de Controles y Parámetros */
.controls-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

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

.controls-card-header h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.control-field {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.control-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.control-value-badge {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  color: var(--color-primary);
}

/* Desplegables select responsivos seguros */
.select-styled {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  min-height: 40px;
  padding: 0.55rem 2.5rem 0.55rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-strong);
  background-color: var(--bg-surface);
  color: var(--text-main);
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 500;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  transition: border-color 0.2s;
}

.select-styled:focus {
  outline: none;
  border-color: var(--color-primary);
}

.select-styled option {
  background-color: var(--bg-card);
  color: var(--text-main);
}

/* Sliders interactivos */
.range-styled {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--bg-surface);
  outline: none;
  appearance: none;
  cursor: pointer;
  margin: 0.5rem 0;
}

.range-styled::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid #ffffff;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  transition: transform 0.15s;
}

.range-styled::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

/* Modales accesibles */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(11, 15, 23, 0.75);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  max-width: 680px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  transform: translateY(15px);
  transition: transform 0.2s ease;
}

.modal-backdrop.active .modal-dialog {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-card);
}

.modal-header h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
}

.btn-modal-close {
  width: 36px;
  height: 36px;
  min-height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--bg-surface);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-modal-close:hover {
  background: var(--color-accent-red);
  color: #ffffff;
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.formula-card {
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.formula-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-main);
}

.formula-math {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--color-primary);
  background-color: var(--bg-card);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
}

/* Acordeón FAQ y Guía SEO */
.seo-guide-section {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.seo-guide-header h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-main);
}

.seo-guide-header p {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.seo-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.seo-accordion-item {
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--bg-card-subtle);
}

.seo-accordion-summary {
  padding: 1rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background-color 0.2s;
}

.seo-accordion-summary::-webkit-details-marker {
  display: none;
}

.seo-accordion-summary:hover {
  background-color: var(--bg-surface);
}

.seo-accordion-content {
  padding: 1rem 1.25rem 1.25rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  border-top: 1px solid var(--border-card);
}

.seo-accordion-content p + p {
  margin-top: 0.75rem;
}

.seo-accordion-content ul {
  padding-left: 1.25rem;
  margin: 0.5rem 0;
}

.seo-accordion-content li {
  margin-bottom: 0.35rem;
}

/* Responsividad móvil */
@media (max-width: 768px) {
  .tool-layout {
    margin: 1rem auto 2rem;
    padding: 0 0.75rem;
  }

  .viewport-stage {
    height: 360px;
    min-height: 320px;
  }

  .canvas-wrapper {
    height: 200px;
  }

  .kpis-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .hud-telemetry {
    top: 0.5rem;
    left: 0.5rem;
  }

  .hud-readings-box {
    padding: 0.45rem 0.65rem;
    font-size: 0.75rem;
  }
}