/**
 * Estilos canónicos para el juego Nuts and bolts (Puzle de tuercas, tornillos y física)
 * Compatible con temas claro y oscuro, y adaptado a móviles y pantallas de alta resolución
 */

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

  --bg-primary: #0b0f17;
  --bg-secondary: #121826;
  --bg-card: #182234;
  --bg-card-border: rgba(255, 255, 255, 0.08);

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --accent-wood: #d4a373;
  --accent-wood-hover: #bc6c25;
  --accent-metal: #38bdf8;
  --accent-metal-hover: #0284c7;
  --accent-gold: #fbbf24;

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-border: rgba(0, 0, 0, 0.08);

  --text-main: #0f172a;
  --text-muted: #64748b;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* 1. Contención general del layout */
body {
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-main);
  margin: 0;
  padding: 0;
}

.main-wrapper.tool-layout {
  max-width: 1200px;
  margin: 1.5rem auto 3rem;
  padding: 0 1rem;
  box-sizing: border-box;
  flex: 1 0 auto;
}

.tool-with-sidebar {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  width: 100%;
}

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

/* Barra selectora de modo de juego (Suite 2 en 1) */
.nuts-mode-selector {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  padding: 0.35rem;
  background: var(--bg-secondary);
  border: 1px solid var(--bg-card-border);
  border-radius: 9999px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.btn-mode-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.2rem;
  border-radius: 9999px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
}

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

.btn-mode-tab.active {
  background: linear-gradient(135deg, #0ea5e9, #38bdf8);
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(14, 165, 233, 0.4);
}

.btn-mode-tab[data-mode="wood"].active {
  background: linear-gradient(135deg, #bc6c25, #d4a373);
  box-shadow: 0 2px 10px rgba(188, 108, 37, 0.4);
}

/* 2. Tarjeta del juego */
.nuts-game-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: 20px;
  padding: 1.25rem;
  box-shadow: var(--shadow-lg);
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
}

/* Barra superior HUD */
.nuts-hud-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--bg-card-border);
}

.hud-title-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(212, 163, 115, 0.15);
  border: 1px solid rgba(212, 163, 115, 0.35);
  color: var(--accent-wood);
  padding: 0.4rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-heading);
}

.hud-stats-group {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

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

.hud-stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.hud-stat-value {
  font-size: 1.15rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-main);
}

/* Contenedor del Canvas */
.nuts-canvas-wrapper {
  position: relative;
  width: 100%;
  max-width: 780px;
  margin: 0 auto;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), inset 0 2px 6px rgba(0, 0, 0, 0.5);
  background: #1a100b;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Píldora toast de aviso de movimiento */
.nuts-toast {
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%) translateY(-12px);
  background: rgba(15, 23, 42, 0.94);
  color: #f8fafc;
  padding: 8px 18px;
  border-radius: 9999px;
  font-family: var(--font-main);
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid rgba(245, 158, 11, 0.5);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.22s ease, transform 0.22s ease;
  z-index: 20;
  white-space: nowrap;
  max-width: 90%;
  text-align: center;
}

.nuts-toast.active {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

#nuts-sort-canvas,
#nuts-wood-canvas,
#nuts-canvas {
  display: block;
  width: 100%;
  height: auto;
  touch-action: none;
  cursor: pointer;
}

/* Barra inferior de controles HUD */
.nuts-hud-toolbar {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--bg-card-border);
}

.btn-hud {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  background: var(--bg-secondary);
  border: 1px solid var(--bg-card-border);
  color: var(--text-main);
  padding: 0.6rem 1rem;
  border-radius: 12px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-main);
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 42px;
}

.btn-hud:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-hud:active:not(:disabled) {
  transform: translateY(0);
}

.btn-hud:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-hud-primary {
  background: linear-gradient(135deg, #bc6c25, #d4a373);
  color: #ffffff;
  border: none;
}

.btn-hud-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, #a45719, #c58f5c);
}

/* Modales accesibles */
.game-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  padding: 1rem;
  box-sizing: border-box;
}

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

.game-modal-content {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: 20px;
  padding: 2rem;
  max-width: 480px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-lg);
  transform: scale(0.9);
  transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.game-modal.active .game-modal-content {
  transform: scale(1);
}

.modal-header-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1rem;
  background: rgba(251, 191, 36, 0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold);
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  margin: 0 0 0.5rem;
  color: var(--text-main);
}

.modal-subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0 0 1.5rem;
}

.modal-stars {
  font-size: 2.2rem;
  color: var(--accent-gold);
  letter-spacing: 0.2rem;
  margin-bottom: 1.2rem;
}

.modal-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1.5rem;
}

.modal-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
}

/* Parrilla de selector de niveles */
.levels-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.6rem;
  max-height: 50vh;
  overflow-y: auto;
  padding: 0.5rem;
  margin-bottom: 1.5rem;
}

.level-card {
  background: var(--bg-secondary);
  border: 1px solid var(--bg-card-border);
  border-radius: 10px;
  padding: 0.6rem 0.3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  cursor: pointer;
  color: var(--text-main);
  transition: all 0.2s ease;
  min-height: 52px;
}

.level-card.unlocked:hover {
  border-color: var(--accent-wood);
  background: rgba(212, 163, 115, 0.15);
  transform: translateY(-2px);
}

.level-card.current {
  border-color: var(--accent-metal);
  background: rgba(56, 189, 248, 0.15);
}

.level-card.locked {
  opacity: 0.35;
  cursor: not-allowed;
}

.level-card .level-num {
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: 1rem;
}

.level-card .level-stars {
  font-size: 0.65rem;
  color: var(--accent-gold);
}

/* Modo pantalla completa */
:fullscreen .nuts-game-card,
:-webkit-full-screen .nuts-game-card {
  width: 100vw;
  height: 100vh;
  max-width: none;
  border-radius: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1rem;
  margin: 0;
  box-sizing: border-box;
}

:fullscreen .nuts-canvas-wrapper,
:-webkit-full-screen .nuts-canvas-wrapper {
  max-width: 60vh;
  flex: 1 1 auto;
}

/* 3. Guía didáctica y acordeón SEO */
.seo-guide-section {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: 16px;
  padding: 1.5rem;
  margin-top: 2rem;
  box-shadow: var(--shadow-sm);
}

.seo-guide-section h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  margin-top: 0;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.seo-guide-section p,
.seo-guide-section li {
  color: var(--text-muted);
  line-height: 1.6;
  font-size: 0.95rem;
}

.seo-guide-section ul {
  padding-left: 1.25rem;
  margin-bottom: 1.25rem;
}

.seo-guide-faq-item {
  border-top: 1px solid var(--bg-card-border);
  padding: 1rem 0;
}

.seo-guide-faq-item:first-of-type {
  border-top: none;
}

.seo-guide-faq-q {
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

/* Responsive móvil */
@media (max-width: 768px) {
  .nuts-game-card {
    padding: 1rem 0.75rem;
    border-radius: 14px;
  }

  .hud-stats-group {
    gap: 0.75rem;
  }

  .hud-stat-value {
    font-size: 1rem;
  }

  .btn-hud {
    padding: 0.5rem 0.75rem;
    font-size: 0.8rem;
  }

  .levels-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}