/* -------------------------------------------------------------
 * Código Semáforo - Estilos Generales y Sistema de Diseño (CSS)
 * ------------------------------------------------------------- */

/* Importar Fuentes desde Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&family=Inter:wght@300;400;500;700&display=swap');

/* Variables de Color y Diseño (Diseño de Pasteles Premium) */
:root {
  /* Modo Claro (Por Defecto) */
  --bg-gradient: linear-gradient(135deg, #fef9e7 0%, #e8f8f5 50%, #ebf5fb 100%);
  --card-bg: rgba(255, 255, 255, 0.75);
  --card-shadow: 0 8px 32px 0 rgba(166, 172, 175, 0.15);
  --border-color: rgba(255, 255, 255, 0.6);
  --text-color: #2c3e50;
  --text-muted: #7f8c8d;
  
  /* HSL Tailored Colors */
  --primary-color: #884ea0; /* Morado pastel vibrante */
  --primary-hover: #7d3c98;
  --primary-light: rgba(136, 78, 160, 0.1);
  
  --success-color: #2ecc71; /* Verde pastel */
  --success-hover: #27ae60;
  --success-light: rgba(46, 204, 113, 0.15);
  
  --warning-color: #f39c12; /* Naranja pastel */
  --warning-hover: #d35400;
  --warning-light: rgba(243, 156, 18, 0.15);
  
  --danger-color: #e74c3c; /* Rojo pastel */
  --danger-hover: #c0392b;
  --danger-light: rgba(231, 76, 60, 0.15);
  
  --border-radius-lg: 20px;
  --border-radius-md: 12px;
  --border-radius-sm: 8px;
  
  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --font-title: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
}

/* Variables para Modo Oscuro */
body.dark-mode {
  --bg-gradient: linear-gradient(135deg, #1b1424 0%, #111827 100%);
  --card-bg: rgba(30, 41, 59, 0.7);
  --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
  --border-color: rgba(255, 255, 255, 0.08);
  --text-color: #f8fafc;
  --text-muted: #94a3b8;
  
  --primary-color: #c084fc; /* Lavanda neón */
  --primary-hover: #d8b4fe;
  --primary-light: rgba(192, 132, 252, 0.15);
  
  --success-color: #34d399;
  --success-hover: #52e5a4;
  --success-light: rgba(52, 211, 153, 0.15);
  
  --warning-color: #fbbf24;
  --warning-hover: #fcd34d;
  --warning-light: rgba(251, 191, 36, 0.15);
  
  --danger-color: #f87171;
  --danger-hover: #fca5a5;
  --danger-light: rgba(248, 113, 113, 0.15);
}

/* Reset de Estilos */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text-color);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-title);
  font-weight: 600;
}

/* Contenedor Principal */
.app-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

/* Navegación y Encabezado */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 25px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--border-color);
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.logo-img {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  transition: var(--transition-smooth);
}

.logo-area:hover .logo-img {
  transform: rotate(15deg) scale(1.1);
}

.logo-area h1 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(45deg, var(--primary-color), var(--warning-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 15px;
}

.nickname-display {
  background: var(--card-bg);
  padding: 8px 16px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--card-bg);
  color: var(--text-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: var(--transition-smooth);
}

.btn-circle:hover {
  transform: translateY(-2px);
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  box-shadow: 0 6px 12px rgba(136, 78, 160, 0.25);
}

/* Vistas de la SPA */
.view-section {
  display: none;
  animation: fadeIn 0.4s ease-in-out forwards;
  flex-grow: 1;
}

.view-section.active {
  display: flex;
  flex-direction: column;
}

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

/* Tarjetas con Efecto Glassmorphism y Hover Grow */
.card-glass {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--card-shadow);
  padding: 30px;
  transition: var(--transition-smooth);
}

.hover-grow:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px 0 rgba(31, 38, 135, 0.12);
}

/* Estilos de la Pantalla de Registro de Nickname */
.login-box {
  max-width: 450px;
  width: 100%;
  margin: auto;
  text-align: center;
}

.login-icon {
  font-size: 4rem;
  margin-bottom: 20px;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.login-box h2 {
  font-size: 2rem;
  margin-bottom: 10px;
  font-weight: 800;
}

.login-box p {
  color: var(--text-muted);
  margin-bottom: 25px;
  font-size: 0.95rem;
}

.form-group {
  margin-bottom: 20px;
  text-align: left;
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.5);
  color: var(--text-color);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: var(--transition-smooth);
}

body.dark-mode .form-control {
  background: rgba(15, 23, 42, 0.5);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px var(--primary-light);
  background: var(--card-bg);
}

.btn-primary {
  width: 100%;
  padding: 14px 20px;
  border-radius: var(--border-radius-md);
  border: none;
  background: linear-gradient(135deg, var(--primary-color) 0%, #9b59b6 100%);
  color: white;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  box-shadow: 0 4px 15px rgba(136, 78, 160, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(136, 78, 160, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Menú Principal */
.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  margin-top: 20px;
}

.menu-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 250px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.menu-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.menu-card-icon {
  font-size: 2.5rem;
  background: var(--primary-light);
  width: 60px;
  height: 60px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.menu-card-badge {
  background: var(--warning-color);
  color: white;
  font-size: 0.75rem;
  font-weight: bold;
  padding: 4px 10px;
  border-radius: 20px;
}

.menu-card h3 {
  font-size: 1.35rem;
  margin-top: 15px;
  margin-bottom: 8px;
}

.menu-card p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.4;
  flex-grow: 1;
}

.menu-card-footer {
  margin-top: 15px;
  display: flex;
  align-items: center;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--primary-color);
  gap: 5px;
  transition: var(--transition-smooth);
}

.menu-card:hover .menu-card-footer {
  gap: 10px;
}

/* Pantalla del Juego - Cabecera */
.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  background: var(--card-bg);
  padding: 15px 25px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
}

.game-title {
  font-size: 1.2rem;
  font-weight: bold;
}

.game-stats {
  display: flex;
  gap: 20px;
}

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

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-value {
  font-size: 1.15rem;
  font-weight: 800;
}

.stat-value.score { color: var(--primary-color); }
.stat-value.time { color: var(--warning-color); }
.stat-value.errors { color: var(--danger-color); }

/* Cronómetro Circular Tipo "Pizza" */
.circular-timer-container {
  position: relative;
  width: 95px;
  height: 95px;
  border-radius: 50%;
  background: conic-gradient(var(--success-color) 360deg, rgba(0, 0, 0, 0.08) 0deg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px auto;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

body.dark-mode .circular-timer-container {
  background: conic-gradient(var(--success-color) 360deg, rgba(255, 255, 255, 0.08) 0deg);
}

.circular-timer-inner {
  width: 77px;
  height: 77px;
  border-radius: 50%;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.05);
}

body.dark-mode .circular-timer-inner {
  background: #1e293b;
}

.timer-text {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 1.7rem;
  color: var(--text-color);
  text-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

/* Pulsación de Urgencia */
@keyframes timerPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.08); box-shadow: 0 0 22px var(--danger-color); }
  100% { transform: scale(1); }
}

.circular-timer-container.pulse-urgent {
  animation: timerPulse 0.4s infinite alternate ease-in-out;
}

/* Área de Juego Principal */
.game-play-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

.semaphore-display {
  background: white;
  border-radius: var(--border-radius-lg);
  padding: 20px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.05);
  margin-bottom: 30px;
  max-width: 320px;
  width: 100%;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(0,0,0,0.05);
  position: relative;
}

body.dark-mode .semaphore-display {
  background: #1e293b;
  border-color: rgba(255, 255, 255, 0.05);
}

.semaphore-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: var(--transition-smooth);
}

/* Opciones de Opción Múltiple (Minijuego 1 - Fácil) */
.options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
  width: 100%;
  max-width: 500px;
}

.btn-option {
  padding: 16px 20px;
  font-size: 1.25rem;
  font-family: var(--font-title);
  font-weight: 800;
  border: 1px solid var(--border-color);
  background: var(--card-bg);
  color: var(--text-color);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-option:hover {
  transform: translateY(-3px);
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* Animaciones de Éxito / Sacudida por error */
.shake {
  animation: shakeAnimation 0.5s ease-in-out;
}

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

/* Entrada de texto */
.game-input-container {
  display: flex;
  gap: 10px;
  width: 100%;
  max-width: 500px;
}

.btn-submit {
  padding: 14px 25px;
  background: var(--primary-color);
  border: none;
  border-radius: var(--border-radius-md);
  color: white;
  font-weight: bold;
  cursor: pointer;
  transition: var(--transition-smooth);
}

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

/* Minijuego 2: Descifra la Palabra - Layout de Banderas */
.word-carousel {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  width: 100%;
  overflow-x: auto;
  padding: 15px 0;
  margin-bottom: 25px;
  scrollbar-width: thin;
}

.word-carousel::-webkit-scrollbar {
  height: 6px;
}

.word-carousel::-webkit-scrollbar-thumb {
  background-color: var(--text-muted);
  border-radius: 3px;
}

.word-letter-card {
  flex: 0 0 110px;
  background: white;
  padding: 10px;
  border-radius: var(--border-radius-md);
  border: 1px solid rgba(0,0,0,0.05);
  box-shadow: 0 4px 10px rgba(0,0,0,0.02);
  display: flex;
  flex-direction: column;
  align-items: center;
}

body.dark-mode .word-letter-card {
  background: #1e293b;
  border-color: rgba(255, 255, 255, 0.05);
}

.word-letter-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
}

.word-letter-index {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 5px;
  font-weight: bold;
}

/* Minijuego 3: Pareo de Señales */
.matching-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  width: 100%;
  max-width: 700px;
  margin: 0 auto;
}

.matching-column {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.matching-card {
  background: var(--card-bg);
  border: 2px solid var(--border-color);
  padding: 12px 20px;
  border-radius: var(--border-radius-md);
  text-align: center;
  cursor: pointer;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
  user-select: none;
  min-height: 70px;
}

.matching-card img {
  max-height: 50px;
  width: auto;
  object-fit: contain;
}

.matching-card.selected {
  border-color: var(--primary-color);
  background: var(--primary-light);
  transform: scale(1.02);
}

.matching-card.matched {
  border-color: var(--success-color);
  background: var(--success-light);
  color: var(--success-hover);
  cursor: default;
  transform: none;
}

/* Minijuego 4: Construye la Palabra */
.construction-word-slots {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.word-slot {
  width: 65px;
  height: 90px;
  border: 2px dashed var(--border-color);
  border-radius: var(--border-radius-md);
  background: rgba(0,0,0,0.02);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: bold;
  position: relative;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.word-slot.filled {
  border-style: solid;
  border-color: var(--primary-color);
  background: white;
}

body.dark-mode .word-slot.filled {
  background: #1e293b;
}

.word-slot img {
  width: 90%;
  height: 70%;
  object-fit: contain;
}

.word-slot-letter {
  font-size: 0.75rem;
  color: var(--primary-color);
  font-weight: bold;
}

.pool-container {
  background: rgba(0,0,0,0.02);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 20px;
  width: 100%;
  max-width: 650px;
}

.pool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
  gap: 12px;
  justify-items: center;
}

.pool-card {
  width: 70px;
  height: 70px;
  background: white;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: var(--border-radius-md);
  padding: 5px;
  cursor: pointer;
  transition: var(--transition-smooth);
  box-shadow: 0 2px 5px rgba(0,0,0,0.03);
}

body.dark-mode .pool-card {
  background: #1e293b;
  border-color: rgba(255, 255, 255, 0.08);
}

.pool-card:hover {
  transform: scale(1.1) translateY(-3px);
  border-color: var(--primary-color);
  box-shadow: 0 5px 12px rgba(136, 78, 160, 0.15);
}

.pool-card img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.pool-card.disabled {
  opacity: 0.25;
  cursor: default;
  pointer-events: none;
}

/* Guía del Alfabeto */
.guide-controls {
  display: flex;
  gap: 15px;
  margin-bottom: 25px;
  flex-wrap: wrap;
}

.guide-search {
  flex-grow: 1;
  min-width: 200px;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 20px;
}

.guide-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 15px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.guide-card img {
  width: 90px;
  height: 90px;
  object-fit: contain;
  margin-bottom: 10px;
}

.guide-letter {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--primary-color);
}

.guide-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.06);
  border-color: var(--primary-color);
}

/* Tabla de Posiciones */
.ranking-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  overflow-x: auto;
  padding-bottom: 5px;
}

.btn-tab {
  padding: 10px 18px;
  background: rgba(0,0,0,0.03);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  border-radius: 30px;
  cursor: pointer;
  font-weight: 600;
  white-space: nowrap;
  transition: var(--transition-smooth);
}

body.dark-mode .btn-tab {
  background: rgba(255,255,255,0.03);
}

.btn-tab.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
  background: var(--card-bg);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th, td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-color);
}

th {
  font-family: var(--font-title);
  font-weight: bold;
  background: rgba(0,0,0,0.02);
  color: var(--text-color);
}

body.dark-mode th {
  background: rgba(255,255,255,0.02);
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: rgba(0,0,0,0.01);
}

body.dark-mode tr:hover td {
  background: rgba(255,255,255,0.01);
}

.badge-difficulty {
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: bold;
  text-transform: uppercase;
}

.badge-difficulty.facil { background: var(--success-light); color: var(--success-hover); }
.badge-difficulty.medio { background: var(--warning-light); color: var(--warning-hover); }
.badge-difficulty.dificil { background: var(--danger-light); color: var(--danger-hover); }

/* Panel de Administración - Pestañas Verticales/Horizontales */
.admin-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 30px;
  margin-top: 20px;
}

@media (max-width: 768px) {
  .admin-layout {
    grid-template-columns: 1fr;
  }
}

.admin-sidebar {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.btn-sidebar {
  padding: 12px 18px;
  background: transparent;
  border: none;
  border-radius: var(--border-radius-md);
  color: var(--text-color);
  text-align: left;
  cursor: pointer;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition-smooth);
}

.btn-sidebar:hover {
  background: rgba(0,0,0,0.03);
}

body.dark-mode .btn-sidebar:hover {
  background: rgba(255,255,255,0.03);
}

.btn-sidebar.active {
  background: var(--primary-color);
  color: white;
}

.admin-content {
  flex-grow: 1;
}

/* Modales e Inputs Especiales */
.status-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 6px;
}

.status-indicator.active { background: var(--success-color); }
.status-indicator.inactive { background: var(--danger-color); }

/* Botones Auxiliares */
.btn-secondary {
  padding: 10px 18px;
  background: transparent;
  color: var(--text-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition-smooth);
}

.btn-secondary:hover {
  background: rgba(0,0,0,0.03);
}

.btn-danger {
  padding: 10px 18px;
  background: var(--danger-color);
  color: white;
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition-smooth);
}

.btn-danger:hover {
  background: var(--danger-hover);
}

/* Switch (Letra Activa/Inactiva) */
.switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 26px;
}

.switch input { 
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: .4s;
  border-radius: 34px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--success-color);
}

input:focus + .slider {
  box-shadow: 0 0 1px var(--success-color);
}

input:checked + .slider:before {
  transform: translateX(24px);
}

/* Pie de Página */
footer {
  text-align: center;
  padding: 20px 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border-color);
  margin-top: 30px;
}

/* -------------------------------------------------------------
 * Media Queries
 * ------------------------------------------------------------- */
@media (max-width: 576px), (max-height: 740px) {
  .app-container {
    padding: 10px;
  }
  
  header {
    flex-direction: column;
    gap: 8px;
    align-items: stretch;
    text-align: center;
    margin-bottom: 12px;
    padding-bottom: 8px;
  }
  
  .header-controls {
    justify-content: space-between;
  }

  .logo-img {
    width: 35px;
    height: 35px;
  }
  
  .logo-area h1 {
    font-size: 1.25rem;
  }

  .game-header {
    margin-bottom: 10px;
    padding: 8px 15px;
  }

  .circular-timer-container {
    width: 65px;
    height: 65px;
    margin-bottom: 10px;
  }

  .circular-timer-inner {
    width: 53px;
    height: 53px;
  }

  .timer-text {
    font-size: 1.3rem;
  }

  .game-play-area {
    min-height: auto;
    padding: 15px !important;
  }

  .semaphore-display {
    max-width: 170px;
    margin-bottom: 15px;
    padding: 10px;
  }

  .options-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 10px;
    max-width: 300px;
  }

  .btn-option {
    padding: 10px 12px;
    font-size: 1.1rem;
  }

  .game-input-container {
    gap: 8px;
    max-width: 300px;
  }

  .form-control {
    padding: 10px 12px;
    font-size: 0.95rem;
  }

  .btn-submit {
    padding: 10px 18px;
    font-size: 0.95rem;
  }

  /* Minijuego 2 carrusel */
  .word-carousel {
    gap: 8px;
    padding: 5px 0;
    margin-bottom: 12px;
  }
  
  .word-letter-card {
    flex: 0 0 70px;
    padding: 6px;
  }
  
  .word-letter-card img {
    max-height: 55px;
  }
  
  .word-letter-index {
    font-size: 0.7rem;
    margin-top: 2px;
  }

  /* Minijuego 3 Pareo */
  .matching-container {
    grid-template-columns: 1fr 1fr !important;
    gap: 12px;
  }

  .matching-card {
    min-height: 44px;
    padding: 5px 10px;
    font-size: 1rem;
  }

  .matching-card img {
    max-height: 32px;
  }

  /* Minijuego 4 Construye */
  .construction-word-slots {
    gap: 6px;
    margin-bottom: 15px;
  }

  .word-slot {
    width: 45px;
    height: 65px;
    font-size: 1rem;
  }

  .word-slot img {
    height: 55%;
  }

  .word-slot-letter {
    font-size: 0.65rem;
  }

  .pool-container {
    padding: 10px;
  }

  .pool-grid {
    grid-template-columns: repeat(auto-fill, minmax(48px, 1fr));
    gap: 8px;
  }

  .pool-card {
    width: 48px;
    height: 48px;
    padding: 3px;
  }
}

/* -------------------------------------------------------------
 * Print Styles (Hoja de Estilo de Impresión para la Guía)
 * ------------------------------------------------------------- */
@media print {
  body {
    background: white !important;
    color: black !important;
  }

  header, footer, .guide-controls, .btn-circle, .btn-secondary {
    display: none !important;
  }

  .app-container {
    padding: 0;
    max-width: 100%;
  }

  .view-section {
    display: block !important;
  }

  .view-section:not(#view-guide) {
    display: none !important;
  }

  .guide-grid {
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 15px !important;
  }

  .guide-card {
    background: transparent !important;
    border: 1px solid #ccc !important;
    box-shadow: none !important;
    page-break-inside: avoid;
  }

  .guide-card img {
    filter: grayscale(100%);
  }
}

/* -------------------------------------------------------------
 * Estilos y Animaciones Infantiles e Interactivas
 * ------------------------------------------------------------- */
@keyframes popIn {
  0% { transform: scale(0.85); opacity: 0.5; }
  70% { transform: scale(1.08); }
  100% { transform: scale(1); opacity: 1; }
}

.word-slot.filled, .matching-card.matched {
  animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

/* Efectos de movimiento y rebote divertidos para niños */
.menu-card:hover {
  transform: translateY(-8px) scale(1.03) rotate(0.5deg) !important;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12) !important;
}

.btn-option:hover {
  transform: translateY(-4px) scale(1.06) rotate(-1deg) !important;
  box-shadow: 0 8px 20px rgba(192, 132, 252, 0.25) !important;
}

.pool-card:hover {
  transform: scale(1.15) rotate(3deg) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 6px 15px rgba(192, 132, 252, 0.2) !important;
}

.matching-card:hover {
  transform: scale(1.04) rotate(1deg);
  border-color: var(--primary-color) !important;
  box-shadow: 0 6px 15px rgba(0,0,0,0.06);
}

.matching-card.selected {
  transform: scale(1.06) rotate(-1.5deg) !important;
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
}

/* Animación sutil de respiración en las imágenes de banderas */
@keyframes flagWobble {
  0% { transform: scale(1); }
  50% { transform: scale(1.03); }
  100% { transform: scale(1); }
}

.guide-card:hover img {
  animation: flagWobble 1.5s infinite ease-in-out;
}