/* ==========================================================================
   Sandbox orbital de gravedad y caos de N cuerpos - Hoja de estilos canónica
   Fijate Tools • fijate.com
   ========================================================================== */

:root {
  --bg-space: #030712;
  --bg-card: #0f172a;
  --bg-card-glass: rgba(15, 23, 42, 0.82);
  --bg-input: #1e293b;
  --border-color: #334155;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --primary-accent: #38bdf8;
  --primary-glow: rgba(56, 189, 248, 0.35);
  --gold-accent: #fbbf24;
  --rose-accent: #f43f5e;
  --emerald-accent: #10b981;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

[data-theme="light"] {
  --bg-space: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-glass: rgba(255, 255, 255, 0.88);
  --bg-input: #f8fafc;
  --border-color: #cbd5e1;
  --border-subtle: rgba(0, 0, 0, 0.08);
  --text-main: #0f172a;
  --text-muted: #64748b;
  --primary-accent: #0284c7;
  --primary-glow: rgba(2, 132, 199, 0.25);
  --gold-accent: #d97706;
  --rose-accent: #e11d48;
  --emerald-accent: #059669;
}

/* Reset y estructura básica */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  background-color: var(--bg-space);
  color: var(--text-main);
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-main);
  margin-top: 0;
  font-weight: 700;
}

/* Layout y contención */
.tool-layout {
  max-width: 1280px;
  margin: 1.5rem auto 3.5rem;
  padding: 0 1rem;
  width: 100%;
}

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

.tool-main-content {
  flex: 1 1 0%;
  min-width: 0;
  width: 100%;
}

/* Migas de pan canónicas */
.tool-breadcrumbs {
  margin-bottom: 1.25rem;
  font-size: 0.875rem;
}

.tool-breadcrumbs ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.tool-breadcrumbs li:not(:last-child)::after {
  content: "›";
  margin-left: 0.5rem;
  color: var(--text-muted);
}

.tool-breadcrumbs a {
  color: var(--primary-accent);
  text-decoration: none;
}

.tool-breadcrumbs a:hover {
  text-decoration: underline;
}

.tool-breadcrumbs span {
  color: var(--text-muted);
}

/* Contenedor principal de la herramienta */
.sandbox-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.3);
  margin-bottom: 2rem;
}

/* Barra superior y controles rápidos */
.sandbox-top-bar {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  background: var(--bg-card);
}

.sandbox-intro h2 {
  margin: 0 0 0.25rem;
  font-size: 1.35rem;
}

.sandbox-intro p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.sandbox-quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

/* Botones de acción canónicos */
.btn-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 40px;
  padding: 0 0.9rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background-color: var(--bg-input);
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.btn-action:hover {
  background-color: var(--border-color);
  border-color: var(--primary-accent);
}

.btn-action.btn-primary {
  background-color: var(--primary-accent);
  color: #030712;
  border-color: var(--primary-accent);
}

.btn-action.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 12px var(--primary-glow);
}

.btn-action.btn-danger:hover {
  background-color: var(--rose-accent);
  border-color: var(--rose-accent);
  color: #ffffff;
}

/* Lienzo interactivo espacial */
.canvas-container {
  position: relative;
  width: 100%;
  height: clamp(380px, 62vh, 680px);
  background: #020617;
  overflow: hidden;
}

#celestial-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
}

/* Modo pantalla completa */
.canvas-container.is-fullscreen,
#sandbox-app-wrapper.is-fullscreen {
  position: fixed;
  inset: 0;
  width: 100vw !important;
  height: 100vh !important;
  max-width: 100vw !important;
  max-height: 100vh !important;
  z-index: 99999;
  border-radius: 0;
}

/* Barra HUD flotante sobre el lienzo */
.hud-telemetry-bar {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  pointer-events: none;
  z-index: 10;
}

.hud-pill {
  pointer-events: auto;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  padding: 0.35rem 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.hud-pill strong {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: #f8fafc;
  font-weight: 700;
}

.hud-pill.hud-fps strong {
  color: var(--emerald-accent);
}

.hud-pill.hud-drift strong {
  color: var(--primary-accent);
}

/* Overlay de controles táctiles en el lienzo */
.canvas-floating-controls {
  position: absolute;
  bottom: 14px;
  right: 14px;
  display: flex;
  gap: 0.5rem;
  z-index: 10;
}

.btn-float {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-float:hover {
  background: var(--primary-accent);
  color: #030712;
  border-color: var(--primary-accent);
  transform: scale(1.08);
}

/* Panel de control y pestañas de configuración */
.sandbox-controls-grid {
  padding: 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
}

.control-section {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.control-section h3 {
  font-size: 0.95rem;
  margin: 0;
  text-transform: none;
  letter-spacing: 0.02em;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border-subtle);
}

/* Rejilla de presets astronómicos */
.presets-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.btn-preset {
  min-height: 42px;
  padding: 0.5rem 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--bg-input);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.btn-preset:hover {
  border-color: var(--primary-accent);
  background: var(--border-color);
}

.btn-preset.is-active {
  border-color: var(--primary-accent);
  background: rgba(56, 189, 248, 0.12);
  color: var(--primary-accent);
  box-shadow: 0 0 0 1px var(--primary-accent);
}

.btn-preset small {
  font-size: 0.68rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-top: 0.15rem;
}

/* Selector de tipo de cuerpo a disparar */
.body-types-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.45rem;
}

.btn-body-type {
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-body-type:hover {
  border-color: var(--primary-accent);
}

.btn-body-type.is-active {
  border-color: var(--gold-accent);
  background: rgba(251, 191, 36, 0.12);
  color: var(--gold-accent);
  box-shadow: 0 0 0 1px var(--gold-accent);
}

.body-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
}

/* Sliders y campos numéricos */
.slider-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.slider-header span strong {
  font-family: var(--font-mono);
  color: var(--text-main);
}

input[type="range"] {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--border-color);
  outline: none;
  cursor: pointer;
  accent-color: var(--primary-accent);
}

/* Desplegables <select> conforme a estándares canónicos */
.form-select {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  min-height: 40px;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  background-color: #0b1320;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0 40px 0 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  appearance: none;
  -webkit-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='%2338bdf8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: calc(100% - 14px) center;
  cursor: pointer;
}

.form-select option {
  background-color: #132238;
  color: #f8fafc;
  padding: 10px;
}

.form-select optgroup {
  background-color: #0b1320;
  color: var(--primary-accent);
  font-weight: 700;
}

[data-theme="light"] .form-select {
  background-color: #ffffff;
  color: #0f172a;
  border-color: #cbd5e1;
  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='%230284c7' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
}

[data-theme="light"] .form-select option {
  background-color: #ffffff;
  color: #0f172a;
}

[data-theme="light"] .form-select optgroup {
  background-color: #f1f5f9;
  color: #0369a1;
}

/* Grupos de checkboxes / conmutadores */
.toggles-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  color: var(--text-main);
  cursor: pointer;
  user-select: none;
}

.checkbox-label input[type="checkbox"] {
  width: 17px;
  height: 17px;
  cursor: pointer;
  accent-color: var(--primary-accent);
}

/* Modales nativos canónicos */
.celestial-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(3, 7, 18, 0.78);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  z-index: 100000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.celestial-modal-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.celestial-modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 680px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  transform: translateY(12px);
  transition: transform 0.25s ease;
}

.celestial-modal-overlay.is-open .celestial-modal-card {
  transform: translateY(0);
}

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

.modal-header h3 {
  margin: 0;
  font-size: 1.2rem;
}

.btn-close-modal {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-close-modal:hover {
  color: var(--text-main);
  background: var(--border-subtle);
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text-main);
}

.modal-body h4 {
  margin: 1.25rem 0 0.35rem;
  font-size: 1.05rem;
  color: var(--primary-accent);
}

.modal-body h4:first-child {
  margin-top: 0;
}

.modal-body p {
  margin: 0 0 1rem;
}

.modal-body code {
  font-family: var(--font-mono);
  background: var(--bg-input);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-size: 0.85em;
  color: var(--gold-accent);
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Guía editorial y sección SEO en página */
.seo-guide-section {
  margin-top: 2.5rem;
}

.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

.guide-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
  color: var(--primary-accent);
}

.guide-card p {
  line-height: 1.65;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

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

.guide-box {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.guide-box h4 {
  font-size: 0.95rem;
  margin-bottom: 0.45rem;
  color: var(--text-main);
}

.guide-box p {
  font-size: 0.85rem;
  margin: 0;
  line-height: 1.55;
  color: var(--text-muted);
}

/* Acordeón FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.faq-item {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-item details summary {
  padding: 1rem 1.25rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-main);
  user-select: none;
}

.faq-item details summary::-webkit-details-marker {
  display: none;
}

.faq-item details summary::after {
  content: "+";
  font-size: 1.2rem;
  font-family: var(--font-mono);
  color: var(--primary-accent);
  transition: transform 0.2s ease;
}

.faq-item details[open] summary::after {
  content: "−";
}

.faq-answer {
  padding: 0 1.25rem 1.25rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-muted);
}

/* Adaptación responsiva móvil */
@media (max-width: 900px) {
  .tool-with-sidebar {
    flex-direction: column;
  }

  .sandbox-top-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .sandbox-quick-actions {
    justify-content: stretch;
  }

  .sandbox-quick-actions .btn-action {
    flex: 1 1 calc(50% - 0.25rem);
    min-width: 0;
  }

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

  .body-types-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  .sandbox-controls-grid {
    grid-template-columns: 1fr;
    padding: 1rem;
  }

  .hud-telemetry-bar {
    gap: 0.35rem;
  }

  .hud-pill {
    padding: 0.25rem 0.55rem;
    font-size: 0.7rem;
  }

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