/* ==========================================================================
   VARIABLES DE DISEÑO Y TEMAS DE COLOR
   ========================================================================== */
:root {
  --bg-color: #f8fafc;
  --card-bg: #ffffff;
  --text-color: #334155;
  --heading-color: #1e293b;
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --accent: #f59e0b;
  --border-color: #e2e8f0;
  --footer-bg: #f1f5f9;
  --success: #10b981;
  --font-size: 1.15rem;
  --radius: 16px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
}

/* MODO OSCURO (Lectura Nocturna) */
body.dark-theme {
  --bg-color: #0f172a;
  --card-bg: #1e293b;
  --text-color: #cbd5e1;
  --heading-color: #f8fafc;
  --border-color: #334155;
  --footer-bg: #0b1120;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   RESETS Y ESTILOS BASE
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Nunito', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  transition: background-color 0.3s, color 0.3s;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

/* ==========================================================================
   CABECERA RESPONSIVE
   ========================================================================== */
header {
  padding: 16px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border-color);
}

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  flex-shrink: 0;
}

.header-controls {
  display: flex;
  gap: 8px;
  align-items: center;
}

.theme-toggle,
.control-btn {
  background: none;
  border: 2px solid var(--border-color);
  border-radius: 20px;
  padding: 6px 14px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: inherit;
  color: var(--text-color);
  white-space: nowrap;
  flex-shrink: 0;
  transition: all 0.2s;
}

.theme-toggle:hover,
.control-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ==========================================================================
   SECCIÓN HERO, BÚSQUEDA Y NAVEGACIÓN
   ========================================================================== */
.breadcrumb {
  margin: 20px 0 10px;
  font-size: 0.85rem;
  opacity: 0.8;
}

.breadcrumb a {
  color: var(--primary);
  text-decoration: none;
}

.hero {
  text-align: center;
  padding: 35px 0 20px;
}

.hero h1 {
  font-size: 2.2rem;
  color: var(--heading-color);
  margin-bottom: 10px;
}

.hero p {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 20px;
}

.user-stats-bar {
  display: inline-flex;
  align-items: center;
  gap: 15px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 8px 20px;
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 25px;
  box-shadow: var(--shadow);
}

.search-box {
  max-width: 500px;
  margin: 0 auto 30px;
}

.search-box input {
  width: 100%;
  padding: 14px 20px;
  border-radius: 30px;
  border: 2px solid var(--border-color);
  background: var(--card-bg);
  color: var(--text-color);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

.search-box input:focus {
  border-color: var(--primary);
}

/* BOTONES DE FILTROS Y CATEGORÍAS */
.categories {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 35px;
}

.cat-btn {
  padding: 8px 18px;
  border-radius: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-color);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.92rem;
  transition: all 0.2s;
}

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

.cat-btn.user-filter {
  border-color: var(--accent);
  color: var(--accent);
}

.cat-btn.user-filter.active {
  background: var(--accent);
  color: #ffffff;
}

/* ==========================================================================
   PARRILLA Y TARJETAS DE CUENTOS
   ========================================================================== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 60px;
  min-height: 200px;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-4px);
}

.card-badges {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.card-tag {
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--accent);
}

.card-quick-actions {
  display: flex;
  gap: 8px;
}

.action-icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  opacity: 0.4;
  transition: transform 0.2s, opacity 0.2s;
}

.action-icon-btn:hover {
  transform: scale(1.2);
  opacity: 0.8;
}

.action-icon-btn.active {
  opacity: 1;
}

.card h2 {
  font-size: 1.25rem;
  color: var(--heading-color);
  margin-bottom: 8px;
}

.card-meta {
  font-size: 0.85rem;
  opacity: 0.8;
  margin-bottom: 12px;
}

.card p {
  font-size: 0.95rem;
  margin-bottom: 20px;
  flex-grow: 1;
}

.btn-read {
  display: inline-block;
  text-align: center;
  background: var(--primary);
  color: #ffffff;
  text-decoration: none;
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 600;
  transition: background 0.2s;
}

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

.no-results {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px;
  font-size: 1.1rem;
  opacity: 0.8;
}

/* ==========================================================================
   ESTILOS DE LECTURA DE CUENTO INDIVIDUAL
   ========================================================================== */
.story-article {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 40px;
  margin: 20px 0 40px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
}

.story-meta {
  font-size: 0.9rem;
  opacity: 0.8;
  margin-bottom: 12px;
  text-transform: uppercase;
  font-weight: 800;
  color: var(--accent);
}

.story-article h1 {
  font-size: 2.3rem;
  color: var(--heading-color);
  margin-bottom: 10px;
  line-height: 1.25;
}

.story-info {
  font-size: 0.95rem;
  opacity: 0.85;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.story-body {
  font-size: var(--font-size);
  line-height: 1.8;
  transition: font-size 0.2s;
}

.story-body p {
  margin-bottom: 22px;
}

/* BLOQUE DE INTERACCIÓN FINAL */
.story-interactive-box {
  margin-top: 40px;
  padding: 30px 20px;
  background: var(--bg-color);
  border: 2px dashed var(--border-color);
  border-radius: var(--radius);
  text-align: center;
}

.story-interactive-box h3 {
  font-size: 1.2rem;
  color: var(--heading-color);
  margin-bottom: 15px;
}

.interactive-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.btn-action {
  padding: 10px 20px;
  border-radius: 25px;
  border: 2px solid var(--border-color);
  background: var(--card-bg);
  color: var(--text-color);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
}

.btn-action:hover {
  transform: translateY(-2px);
}

.btn-action.liked {
  background: #fef2f2;
  border-color: #ef4444;
  color: #ef4444;
}

.btn-action.read {
  background: #ecfdf5;
  border-color: var(--success);
  color: var(--success);
}

.star-rating {
  margin-top: 15px;
}

.star-rating span {
  font-size: 1.1rem;
  font-weight: 600;
  display: block;
  margin-bottom: 8px;
}

.stars {
  display: inline-flex;
  gap: 6px;
  cursor: pointer;
}

.star {
  font-size: 1.6rem;
  color: var(--border-color);
  transition: color 0.2s, transform 0.2s;
}

.star:hover, 
.star.active {
  color: var(--accent);
  transform: scale(1.15);
}

/* ==========================================================================
   ESTILOS COMPLETOS DEL FOOTER (GRID & NAVEGACIÓN)
   ========================================================================== */
footer {
  background-color: var(--footer-bg);
  border-top: 1px solid var(--border-color);
  padding: 50px 0 30px;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.footer-col h3 {
  font-size: 1rem;
  color: var(--heading-color);
  margin-bottom: 14px;
  font-weight: 800;
}

.footer-col ul {
  list-style: none; /* Elimina las viñetas por defecto */
  padding: 0;
  margin: 0;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul a {
  color: var(--text-color);
  text-decoration: none;
  font-size: 0.9rem;
  opacity: 0.85;
  transition: opacity 0.2s, color 0.2s;
}

.footer-col ul a:hover {
  opacity: 1;
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.7;
}

/* ==========================================================================
   MEDIA QUERIES (AJUSTES PARA MÓVILES)
   ========================================================================== */
@media (max-width: 480px) {
  header {
    padding: 12px 0;
  }

  .logo {
    font-size: 1.2rem;
    gap: 6px;
  }

  .theme-toggle,
  .control-btn {
    padding: 5px 10px;
    font-size: 0.8rem;
  }

  .story-article {
    padding: 24px 18px;
  }

  .story-article h1 {
    font-size: 1.8rem;
  }
}

/* ==========================================================================
   SECCIÓN DE CUENTOS RECOMENDADOS (AL FINAL DEL CUENTO)
   ========================================================================== */
.recommendations {
  margin-top: 40px;
}

.recommendations h3 {
  font-size: 1.2rem;
  color: var(--heading-color);
  margin-bottom: 20px;
}

.rec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.rec-card {
  background: var(--card-bg);
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  text-decoration: none;
  color: var(--text-color);
  transition: transform 0.2s;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.rec-card:hover {
  transform: translateY(-3px);
}

.rec-card h4 {
  font-size: 1rem;
  color: var(--heading-color);
  margin-bottom: 6px;
}

.rec-card p {
  font-size: 0.85rem;
  opacity: 0.8;
  margin-bottom: 0;
}

.story-footer-nav {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.back-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 700;
}

/* CONTENEDOR ESTRECHO PARA LECTURA DE CUENTOS */
.story-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}