/* ==========================================================================
   SISTEMA DE DISEÑO Y ESTILOS PREMIUM - RECETAS AIRFRYER
   ========================================================================== */

/* Variables y Tokens de Diseño */
:root {
  /* Tipografía */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Paleta HSL - Modo Oscuro (Predeterminado) */
  --color-brand-h: 24;     /* Amber/Orange */
  --color-brand-s: 100%;
  --color-brand-l: 54%;

  --bg-primary-dark: hsl(222, 20%, 8%);
  --bg-secondary-dark: hsl(222, 20%, 12%);
  --bg-tertiary-dark: hsl(222, 20%, 16%);
  
  --text-primary-dark: hsl(210, 20%, 96%);
  --text-secondary-dark: hsl(210, 10%, 70%);
  --text-muted-dark: hsl(210, 10%, 50%);

  --border-color-dark: hsla(210, 20%, 25%, 0.4);
  --border-focus-dark: hsl(var(--color-brand-h), 100%, 60%);
  
  --card-bg-dark: hsla(222, 20%, 12%, 0.7);
  --card-shadow-dark: rgba(0, 0, 0, 0.4);

  /* Paleta HSL - Modo Claro */
  --bg-primary-light: hsl(210, 20%, 97%);
  --bg-secondary-light: hsl(0, 0%, 100%);
  --bg-tertiary-light: hsl(210, 16%, 93%);

  --text-primary-light: hsl(222, 24%, 12%);
  --text-secondary-light: hsl(222, 12%, 35%);
  --text-muted-light: hsl(222, 8%, 55%);

  --border-color-light: hsla(222, 12%, 85%, 0.8);
  --border-focus-light: hsl(var(--color-brand-h), 95%, 50%);
  
  --card-bg-light: hsla(0, 0%, 100%, 0.75);
  --card-shadow-light: rgba(22, 28, 45, 0.08);

  /* Estados Dinámicos / Globales (Por defecto: Oscuro) */
  --bg-primary: var(--bg-primary-dark);
  --bg-secondary: var(--bg-secondary-dark);
  --bg-tertiary: var(--bg-tertiary-dark);
  --text-primary: var(--text-primary-dark);
  --text-secondary: var(--text-secondary-dark);
  --text-muted: var(--text-muted-dark);
  --border-color: var(--border-color-dark);
  --border-focus: var(--border-focus-dark);
  --card-bg: var(--card-bg-dark);
  --card-shadow: var(--card-shadow-dark);

  /* Brand Colors */
  --color-brand: hsl(var(--color-brand-h), var(--color-brand-s), var(--color-brand-l));
  --color-brand-hover: hsl(var(--color-brand-h), var(--color-brand-s), 45%);
  --color-brand-light: hsla(var(--color-brand-h), var(--color-brand-s), var(--color-brand-l), 0.15);

  /* Funcionales */
  --color-success: hsl(142, 70%, 45%);
  --color-success-light: hsla(142, 70%, 45%, 0.15);
  --color-error: hsl(0, 84%, 60%);
  --color-favorite: hsl(350, 89%, 60%);

  /* Efectos y bordes */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  --scrollbar-thumb-color: hsla(0, 0%, 50%, 0.3);
  --scrollbar-track-color: transparent;

  /* Color Scheme nativo */
  color-scheme: dark light;
}

/* Modificadores para Modo Claro */
.light-mode {
  --bg-primary: var(--bg-primary-light);
  --bg-secondary: var(--bg-secondary-light);
  --bg-tertiary: var(--bg-tertiary-light);
  --text-primary: var(--text-primary-light);
  --text-secondary: var(--text-secondary-light);
  --text-muted: var(--text-muted-light);
  --border-color: var(--border-color-light);
  --border-focus: var(--border-focus-light);
  --card-bg: var(--card-bg-light);
  --card-shadow: var(--card-shadow-light);
  color-scheme: light;
}

/* Scrollbar Personalizado (Estándar) */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb-color) var(--scrollbar-track-color);
}

/* Fallback Scrollbar Webkit */
@supports not (scrollbar-color: auto) {
  ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
  }
  ::-webkit-scrollbar-track {
    background: var(--scrollbar-track-color);
  }
  ::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb-color);
    border-radius: var(--radius-full);
  }
  ::-webkit-scrollbar-thumb:hover {
    background: hsla(0, 0%, 50%, 0.5);
  }
}

/* ==========================================================================
   Estilos Base y Tipografía
   ========================================================================== */
body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
}

a {
  color: var(--color-brand);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--color-brand-hover);
}

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
}

/* Estilos de Utilidades */
.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}
.icon-btn:hover {
  background-color: var(--color-brand-light);
  border-color: var(--color-brand);
  color: var(--color-brand);
  transform: translateY(-2px);
}
.icon-btn:active {
  transform: translateY(0);
}

.primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  background-color: var(--color-brand);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 14px hsla(var(--color-brand-h), var(--color-brand-s), var(--color-brand-l), 0.3);
  transition: all var(--transition-fast);
}
.primary-btn:hover {
  background-color: var(--color-brand-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px hsla(var(--color-brand-h), var(--color-brand-s), var(--color-brand-l), 0.4);
}
.primary-btn:active {
  transform: translateY(0);
}

.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}
.secondary-btn:hover {
  background-color: var(--bg-primary);
  border-color: var(--text-muted);
  transform: translateY(-2px);
}
.secondary-btn:active {
  transform: translateY(0);
}

.control-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}
.control-btn:hover {
  border-color: var(--color-brand);
  background-color: var(--color-brand-light);
  color: var(--color-brand);
}

.text-link-btn {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: underline;
  padding: 4px;
  transition: color var(--transition-fast);
}
.text-link-btn:hover {
  color: var(--color-brand);
}

/* ==========================================================================
   Header de la Aplicación
   ========================================================================== */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: hsla(222, 20%, 8%, 0.7);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-normal);
}
.light-mode .app-header {
  background-color: hsla(0, 0%, 100%, 0.75);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1400px;
  margin: 0 auto;
  padding: 16px 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  color: var(--color-brand);
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-text h1 {
  font-size: 1.4rem;
  font-weight: 800;
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  color: var(--text-primary);
}
.brand-text h1 span {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-brand);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Favoritos Botón & Badge */
#favorites-toggle-btn {
  position: relative;
}
#favorites-toggle-btn .badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  background-color: var(--color-favorite);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
  border: 2px solid var(--bg-primary);
  transition: transform var(--transition-fast);
}
#favorites-toggle-btn.active .heart-icon {
  fill: var(--color-favorite);
  stroke: var(--color-favorite);
}
#favorites-toggle-btn.active {
  border-color: var(--color-favorite);
  background-color: hsla(350, 89%, 60%, 0.1);
}

/* ==========================================================================
   Hero Banner y Barra de Búsqueda
   ========================================================================== */
.hero-banner {
  position: relative;
  height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
  background-image: url('assets/airfryer_hero.png');
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 12, 18, 0.4) 0%, rgba(10, 12, 18, 0.85) 100%);
  z-index: 1;
}
.light-mode .hero-overlay {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.1) 0%, rgba(240, 242, 245, 0.95) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 750px;
  width: 100%;
}

.hero-banner h2 {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: #fff;
  text-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}
.light-mode .hero-banner h2 {
  color: var(--text-primary);
  text-shadow: 0 2px 4px rgba(255, 255, 255, 0.8);
}

.hero-banner p {
  font-size: 1.1rem;
  margin-bottom: 30px;
  color: hsl(210, 10%, 85%);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}
.light-mode .hero-banner p {
  color: var(--text-secondary);
  text-shadow: none;
}

/* Buscador */
.hero-search {
  max-width: 620px;
  margin: 0 auto;
}

.search-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  background-color: hsla(222, 20%, 8%, 0.8);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 4px 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  backdrop-filter: blur(8px);
  transition: all var(--transition-normal);
}
.light-mode .search-wrapper {
  background-color: hsla(0, 0%, 100%, 0.9);
  box-shadow: 0 10px 30px rgba(22, 28, 45, 0.12);
  border-color: var(--border-color);
}
.search-wrapper:focus-within {
  border-color: var(--color-brand);
  box-shadow: 0 0 0 4px hsla(var(--color-brand-h), var(--color-brand-s), var(--color-brand-l), 0.25);
  transform: scale(1.01);
}

.search-icon {
  color: var(--text-muted);
  margin-right: 12px;
}

#search-input {
  width: 100%;
  padding: 14px 0;
  background: none;
  border: none;
  outline: none;
  font-size: 1.05rem;
  color: #fff;
  font-family: var(--font-body);
}
.light-mode #search-input {
  color: var(--text-primary);
}
#search-input::placeholder {
  color: var(--text-muted);
}

.clear-btn {
  color: var(--text-muted);
  background: none;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  border-radius: var(--radius-full);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}
.clear-btn:hover {
  color: var(--color-brand);
  background-color: var(--bg-tertiary);
}

/* Sugerencias de Autocompletado */
.search-suggestions {
  position: absolute;
  left: 24px;
  right: 24px;
  margin-top: 8px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
  z-index: 10;
  max-height: 250px;
  overflow-y: auto;
  text-align: left;
  animation: slideDown 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.light-mode .search-suggestions {
  box-shadow: 0 10px 25px rgba(22, 28, 45, 0.15);
}

.suggestion-item {
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.suggestion-item:last-child {
  border-bottom: none;
}
.suggestion-item:hover, .suggestion-item.active {
  background-color: var(--bg-tertiary);
}
.suggestion-text {
  font-weight: 500;
  color: var(--text-primary);
}
.suggestion-meta {
  font-size: 0.75rem;
  color: var(--color-brand);
  background-color: var(--color-brand-light);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   Layout Principal y Filtros
   ========================================================================== */
.app-layout {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 24px;
  flex: 1;
}

/* Tabs de Libros (Filtro Superior) */
.books-nav {
  margin-bottom: 24px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding: 4px 0;
}
.books-tabs {
  display: flex;
  gap: 10px;
  list-style: none;
  min-width: max-content;
  padding-bottom: 8px;
}
.books-tab-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 12px 18px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  text-align: left;
}
.books-tab-btn:hover {
  border-color: var(--color-brand);
  background-color: var(--bg-tertiary);
  transform: translateY(-2px);
}
.books-tab-btn.active {
  background-color: var(--color-brand-light);
  border-color: var(--color-brand);
  color: var(--color-brand);
  box-shadow: 0 4px 12px hsla(var(--color-brand-h), var(--color-brand-s), var(--color-brand-l), 0.1);
}
.books-tab-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
}
.books-tab-count {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
}
.books-tab-btn.active .books-tab-count {
  color: var(--color-brand);
}

/* Sección de Filtros */
.filters-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.filters-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.filters-header h3 {
  font-size: 1.3rem;
  color: var(--text-primary);
}
.recipes-counter {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Categorías Scrollable Chips */
.categories-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.category-chip {
  padding: 8px 16px;
  border-radius: var(--radius-full);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.category-chip:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
  transform: translateY(-1px);
}
.category-chip.active {
  background-color: var(--color-brand);
  border-color: var(--color-brand);
  color: #fff;
}

/* Ordenación */
.sort-controls {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.select-wrapper {
  position: relative;
}
.select-wrapper select {
  font-family: var(--font-body);
  appearance: none;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 32px 8px 16px;
  border-radius: var(--radius-md);
  font-weight: 500;
  outline: none;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}
.select-wrapper select:focus {
  border-color: var(--color-brand);
}
.select-wrapper::after {
  content: '';
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-20%);
  border: 5px solid transparent;
  border-top-color: var(--text-muted);
  pointer-events: none;
}

/* ==========================================================================
   Rejilla de Tarjetas de Recetas
   ========================================================================== */
.recipes-grid-section {
  position: relative;
  min-height: 400px;
}

.recipes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 24px;
}

/* Estilo Tarjeta Glassmorphism */
.recipe-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background-color: var(--card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 24px var(--card-shadow);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  animation: fadeIn 0.4s ease-out;
}

.recipe-card:hover {
  transform: translateY(-8px) scale(1.01);
  border-color: hsla(var(--color-brand-h), var(--color-brand-s), var(--color-brand-l), 0.4);
  box-shadow: 0 12px 35px var(--card-shadow), 0 0 15px hsla(var(--color-brand-h), var(--color-brand-s), var(--color-brand-l), 0.1);
}

/* Imagen Gastronómica Superior en Tarjeta */
.card-visual {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.card-image-fallback, .modal-image-fallback {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #1b2030 0%, #0d0f17 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: hsla(var(--color-brand-h), var(--color-brand-s), var(--color-brand-l), 0.6);
  z-index: 1;
}

.light-mode .card-image-fallback, .light-mode .modal-image-fallback {
  background: linear-gradient(135deg, #f0f2f5 0%, #e4e7eb 100%);
  color: hsla(var(--color-brand-h), var(--color-brand-s), var(--color-brand-l), 0.4);
}

.card-image-fallback svg, .modal-image-fallback svg {
  width: 64px;
  height: 64px;
  opacity: 0.7;
}

.card-image {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.recipe-card:hover .card-image {
  transform: scale(1.08);
}

/* Badges e Iconos Flotantes de Tarjeta */
.card-badges {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
}
.badge-book {
  background-color: rgba(10, 12, 18, 0.75);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.1);
}
.light-mode .badge-book {
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.card-favorite-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 5;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background-color: rgba(10, 12, 18, 0.6);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.1);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.light-mode .card-favorite-btn {
  background-color: rgba(255, 255, 255, 0.85);
  color: var(--text-secondary);
  border-color: var(--border-color);
}
.card-favorite-btn:hover {
  transform: scale(1.15);
  background-color: var(--color-favorite);
  border-color: var(--color-favorite);
  color: #fff;
}
.card-favorite-btn.active {
  background-color: var(--color-favorite);
  border-color: var(--color-favorite);
  color: #fff;
}
.card-favorite-btn.active .heart-icon {
  fill: #fff;
}

/* Cuerpo de la Tarjeta */
.card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.recipe-category {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-brand);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.recipe-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  height: 3.0em; /* Evitar saltos de layout por altura variable */
}

/* Ficha Técnica Tarjeta */
.recipe-specs {
  display: flex;
  gap: 16px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.spec {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}
.spec svg {
  color: var(--text-muted);
}

/* Estado Vacío */
.empty-state {
  text-align: center;
  padding: 60px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.empty-state svg {
  color: var(--text-muted);
  animation: pulse 2s infinite;
}
.empty-state h4 {
  font-size: 1.4rem;
}
.empty-state p {
  color: var(--text-secondary);
  max-width: 400px;
}

/* Sección Descargas Eliminada */

/* Pie de Página */
.app-footer {
  padding: 40px 24px;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.footer-note {
  font-size: 0.8rem;
  margin-top: 6px;
}

/* ==========================================================================
   Modales (HTML5 dialog element)
   ========================================================================== */
dialog {
  margin: auto;
  border: none;
  background: none;
  outline: none;
  max-width: 90%;
  width: 780px;
  max-height: 85vh;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  z-index: 1000;
}
.light-mode dialog {
  box-shadow: 0 20px 50px rgba(22, 28, 45, 0.25);
}

/* Backdrop */
dialog::backdrop {
  background-color: rgba(6, 8, 12, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: fadeIn 0.3s ease-out;
}
.light-mode dialog::backdrop {
  background-color: rgba(22, 28, 45, 0.4);
}

/* Contenido del modal */
.modal-content {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  max-height: 85vh;
  overflow: hidden;
}

.modal-header {
  padding: 24px;
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.modal-meta-top {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}
.modal-badge-book, .modal-badge-category {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: var(--radius-full);
}
.modal-badge-book {
  background-color: var(--color-brand-light);
  color: var(--color-brand);
}
.modal-badge-category {
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.modal-header h2 {
  font-size: 1.8rem;
  line-height: 1.25;
  color: var(--text-primary);
  padding-right: 40px;
}

.close-btn {
  position: absolute;
  top: 24px;
  right: 24px;
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  background-color: var(--bg-tertiary);
}
.close-btn:hover {
  background-color: var(--color-error);
  color: #fff;
  transform: rotate(90deg);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

/* Imagen de receta en modal */
.modal-image-container {
  position: relative;
  width: 100%;
  height: 240px;
  overflow: hidden;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-tertiary);
}
.modal-recipe-image {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-quick-specs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.spec-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  padding: 12px 16px;
  border-radius: var(--radius-md);
}
.spec-icon {
  color: var(--color-brand);
}
.spec-text {
  display: flex;
  flex-direction: column;
}
.spec-text span {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}
.spec-text strong {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Escalador de Porciones */
.portion-scaler {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  background-color: var(--bg-tertiary);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  border: 1.5px dashed var(--border-color);
}
.portion-scaler label {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-secondary);
}
.scaler-controls {
  display: flex;
  align-items: center;
  gap: 14px;
}
.scaler-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.scaler-btn:hover {
  background-color: var(--color-brand);
  color: #fff;
  border-color: var(--color-brand);
}
#scaler-current-value {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  min-width: 24px;
  text-align: center;
  color: var(--color-brand);
}
.scaler-label-type {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
}

.modal-divider {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 24px 0;
}

/* Rejilla Detalles Modal */
.modal-details-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 30px;
}
@media (max-width: 768px) {
  .modal-details-grid {
    grid-template-columns: 1fr;
  }
}

.section-instruction {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.modal-ingredients-section h3, .modal-instructions-section h3 {
  font-size: 1.25rem;
  margin-bottom: 6px;
}

/* Lista de ingredientes interactiva */
.ingredients-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.ingredients-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-primary);
  padding: 8px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-tertiary);
  transition: all var(--transition-fast);
  cursor: pointer;
}
.ingredients-list li:hover {
  background-color: var(--color-brand-light);
}
.ingredients-list li.checked {
  opacity: 0.6;
  text-decoration: line-through;
}

.ingredients-list input[type="checkbox"] {
  accent-color: var(--color-brand);
  margin-top: 4px;
}

/* Lista de preparación interactiva */
.instructions-list {
  list-style: none;
  counter-reset: steps-counter;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.instructions-list li {
  position: relative;
  counter-increment: steps-counter;
  padding-left: 44px;
  font-size: 0.95rem;
  min-height: 32px;
}
.instructions-list li::before {
  content: counter(steps-counter);
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background-color: var(--color-brand-light);
  color: var(--color-brand);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-family: var(--font-heading);
  border: 1px solid hsla(var(--color-brand-h), var(--color-brand-s), var(--color-brand-l), 0.2);
}
.instructions-list li.checked {
  opacity: 0.45;
}
.instructions-list li.checked::before {
  background-color: var(--color-success-light);
  color: var(--color-success);
  border-color: var(--color-success);
  content: '✓';
}

/* Botón del Temporizador en el Paso */
.timer-trigger-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background-color: var(--color-brand-light);
  color: var(--color-brand);
  border: 1px solid hsla(var(--color-brand-h), var(--color-brand-s), var(--color-brand-l), 0.3);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  margin-left: 6px;
  transition: all var(--transition-fast);
}
.timer-trigger-btn:hover {
  background-color: var(--color-brand);
  color: #fff;
  border-color: var(--color-brand);
}

/* Caja de Consejos */
.modal-tip-box {
  margin-top: 24px;
  background-color: var(--color-brand-light);
  border: 1px solid hsla(var(--color-brand-h), var(--color-brand-s), var(--color-brand-l), 0.25);
  border-left: 4px solid var(--color-brand);
  padding: 16px 20px;
  border-radius: var(--radius-md);
}
.tip-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-brand);
  margin-bottom: 6px;
  font-family: var(--font-heading);
}
#modal-tip-text {
  font-size: 0.9rem;
  color: var(--text-primary);
}

.modal-footer {
  padding: 20px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--bg-tertiary);
}

/* Favoritos en Modal */
.btn-favorite-toggle.active {
  background-color: var(--color-favorite);
  border-color: var(--color-favorite);
  color: #fff;
}
.btn-favorite-toggle.active svg {
  fill: #fff;
  stroke: #fff;
}

/* Botón YouTube en el modal */
.btn-youtube {
  background-color: #ff0000;
  border-color: #ff0000;
  color: #fff;
}
.btn-youtube:hover {
  background-color: #cc0000;
  border-color: #cc0000;
  color: #fff;
}
.btn-youtube svg {
  fill: currentColor;
}

/* Badge YouTube en las cards */
.card-youtube-badge {
  position: absolute;
  bottom: 10px;
  left: 10px;
  background: #ff0000;
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 6px 10px 6px 8px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3px;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  z-index: 3;
}
.card-youtube-badge:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 18px rgba(255, 0, 0, 0.4);
}
.card-youtube-badge svg {
  fill: #fff;
}

/* Modal de YouTube */
.youtube-modal-content {
  width: min(820px, 95vw);
  max-width: 820px;
  overflow: hidden;
}
.youtube-modal-header {
  padding: 14px 20px;
  gap: 12px;
  align-items: flex-start;
}
.youtube-modal-title-text {
  font-size: 17px;
  line-height: 1.3;
  margin: 0;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  word-break: break-word;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 700;
}
.youtube-modal-title-text:hover {
  color: #ff0000;
}
.youtube-modal-body {
  padding: 0 !important;
  background: #000;
}
.youtube-embed-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  background: #000;
}
.youtube-embed-wrapper iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Página dedicada de Tiempos y Temperaturas */
.tiempos-page .tiempos-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}
.tiempos-hero {
  text-align: center;
  margin-bottom: 28px;
}
.tiempos-hero h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  margin: 0 0 8px;
  color: var(--text-primary);
}
.tiempos-hero p {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.5;
}
.tiempos-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.tiempos-back {
  margin-top: 24px;
  display: flex;
  justify-content: center;
}
@media (max-width: 768px) {
  .tiempos-page .tiempos-main {
    padding: 20px 14px 48px;
  }
  .tiempos-content {
    padding: 16px;
  }
}

/* Tabla de Referencia (usada en página tiempos y antes en modal) — responsive */
.large-modal {
  width: min(960px, 95vw);
  max-width: 95vw;
}
.large-modal .modal-header {
  padding: 18px 20px;
}
.large-modal .modal-header h2 {
  font-size: 1.4rem;
  line-height: 1.3;
  padding-right: 48px;
  margin: 0;
}
.large-modal .modal-body {
  padding: 16px 20px;
}
.large-modal .modal-body > p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0 0 14px;
}

.table-search {
  margin-bottom: 14px;
}
.table-search input {
  width: 100%;
  padding: 11px 14px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  outline: none;
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast);
  box-sizing: border-box;
}
.table-search input:focus {
  border-color: var(--color-brand);
}

.table-container {
  max-height: 55vh;
  overflow-y: auto;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  -webkit-overflow-scrolling: touch;
}
.reference-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  table-layout: auto;
}
.reference-table th,
.reference-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.88rem;
  vertical-align: middle;
}
.reference-table th {
  background-color: var(--bg-tertiary);
  font-weight: 700;
  color: var(--text-primary);
  position: sticky;
  top: 0;
  z-index: 2;
  white-space: nowrap;
}
.reference-table tbody tr {
  transition: background-color var(--transition-fast);
}
.reference-table tbody tr:hover {
  background-color: var(--bg-tertiary);
}
.reference-table td strong {
  color: var(--color-brand);
}
.reference-table td:nth-child(3),
.reference-table td:nth-child(4) {
  white-space: nowrap;
}

/* Mobile (<=768px): tabla se convierte en lista de cards */
@media (max-width: 768px) {
  .large-modal .modal-header h2 {
    font-size: 1.15rem;
    padding-right: 44px;
  }
  .large-modal .modal-header {
    padding: 14px 16px;
  }
  .large-modal .modal-body {
    padding: 12px 14px;
  }
  .table-container {
    border: 0;
    background: transparent;
    max-height: 60vh;
  }
  .reference-table,
  .reference-table thead,
  .reference-table tbody,
  .reference-table tr,
  .reference-table th,
  .reference-table td {
    display: block;
    width: 100%;
  }
  .reference-table thead {
    position: absolute;
    left: -9999px;
  }
  .reference-table tr {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px;
    margin-bottom: 10px;
  }
  .reference-table tr:hover {
    background: var(--bg-tertiary);
  }
  .reference-table td {
    border: 0;
    padding: 5px 0;
    font-size: 0.92rem;
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 10px;
    align-items: baseline;
  }
  .reference-table td::before {
    content: attr(data-label);
    color: var(--text-muted);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.4px;
  }
  .reference-table td:first-child {
    display: block;
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-brand);
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 8px;
  }
  .reference-table td:first-child::before {
    display: none;
  }
  .reference-table td:nth-child(3),
  .reference-table td:nth-child(4) {
    white-space: normal;
  }
}

/* ==========================================================================
   HUD del Temporizador
   ========================================================================== */
.timer-hud {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  width: 320px;
  background-color: hsla(222, 20%, 8%, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1.5px solid var(--color-brand);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 15px hsla(var(--color-brand-h), var(--color-brand-s), var(--color-brand-l), 0.2);
  overflow: hidden;
  animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.light-mode .timer-hud {
  background-color: hsla(0, 0%, 100%, 0.9);
  box-shadow: 0 10px 30px rgba(22, 28, 45, 0.15), 0 0 15px hsla(var(--color-brand-h), var(--color-brand-s), var(--color-brand-l), 0.1);
}

.timer-hud-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
}

.timer-hud-info {
  display: flex;
  flex-direction: column;
}
.timer-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 160px;
}
.timer-display {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-brand);
  line-height: 1.1;
}

.timer-hud-controls {
  display: flex;
  gap: 8px;
}
.hud-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}
.hud-btn:hover {
  background-color: var(--color-brand);
  color: #fff;
  border-color: var(--color-brand);
}
.hud-btn.stop-btn:hover {
  background-color: var(--color-error);
  color: #fff;
  border-color: var(--color-error);
}

.timer-progress-bar {
  height: 4px;
  background-color: var(--bg-tertiary);
  width: 100%;
}
.timer-progress-fill {
  height: 100%;
  background-color: var(--color-brand);
  transition: width 1s linear;
}

/* ==========================================================================
   Animaciones CSS
   ========================================================================== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.05); opacity: 1; }
  100% { transform: scale(1); opacity: 0.6; }
}