@import url("https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css");

/* ============================================
   SISTEMA DE DISEÑO - VARIABLES CSS
   ============================================ */
:root {
  /* Colores principales */
  --primary-color: #8B6F47;
  --primary-dark: #6B5435;
  --primary-light: #A6895F;
  --secondary-color: #D4A574;
  --accent-color: #F5E6D3;
  
  /* Colores de texto */
  --text-primary: #2C2C2C;
  --text-secondary: #6C757D;
  --text-light: #FFFFFF;
  --text-muted: #9E9E9E;
  
  /* Colores de fondo */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8F9FA;
  --bg-tertiary: #F5F5F5;
  --bg-dark: #1A1A1A;
  --bg-dark-secondary: #2C2C2C;
  
  /* Colores de estado */
  --success: #28A745;
  --warning: #FFC107;
  --danger: #DC3545;
  --info: #17A2B8;
  
  /* Sombras */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.2);
  --shadow-hover: 0 8px 25px rgba(139, 111, 71, 0.3);
  
  /* Espaciado */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  
  /* Bordes */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 50px;
  
  /* Transiciones */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Tipografía */
  --font-primary: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Oswald', 'Montserrat', sans-serif;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-whatsapp: 9999;
}

/* ============================================
   RESET Y BASE
   ============================================ */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  text-decoration: none;
  list-style: none;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.wraper {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ============================================
   NAVEGACIÓN
   ============================================ */
.navbar {
  backdrop-filter: blur(10px);
  background: rgba(139, 111, 71, 0.95) !important;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  z-index: var(--z-fixed);
  min-height: 70px;
}

.bg-nav {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
}

.navbar-content {
  min-height: 70px;
}

/* Botón hamburguesa */
.navbar-toggler-custom {
  background: transparent;
  border: none;
  color: var(--text-light);
  font-size: 1.75rem;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
}

.navbar-toggler-custom:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.1);
}

.navbar-toggler-custom:focus {
  outline: 2px solid rgba(255, 255, 255, 0.5);
  outline-offset: 2px;
}

.navbar-toggler-custom i {
  transition: transform var(--transition-base);
}

.navbar-toggler-custom:hover i {
  transform: rotate(90deg);
}

/* Logo/Brand */
.navbar-brand-custom {
  text-decoration: none;
  display: flex;
  align-items: center;
  transition: all var(--transition-base);
}

.navbar-brand-custom:hover {
  transform: translateY(-2px);
}

.navbar-brand-custom h1 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2rem);
  letter-spacing: 1px;
  color: var(--text-light);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
  transition: all var(--transition-base);
  margin: 0;
}

.navbar-brand-custom:hover h1 {
  text-shadow: 2px 4px 8px rgba(0, 0, 0, 0.3);
  color: var(--accent-color);
}

/* Acciones del navbar */
.navbar-actions {
  gap: var(--spacing-md);
}

/* Carrito con badge */
.cart-icon-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  color: var(--text-light);
  font-size: 1.5rem;
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  background: rgba(255, 255, 255, 0.05);
}

.cart-icon-wrapper:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: scale(1.1);
  color: var(--accent-color);
}

.cart-icon-wrapper i {
  transition: transform var(--transition-base);
}

.cart-icon-wrapper:hover i {
  transform: scale(1.15);
}

/* Contador de productos - Badge arriba del carrito */
.contador-productos {
  position: absolute;
  top: -8px;
  right: -8px;
  background: linear-gradient(135deg, var(--danger) 0%, #C82333 100%);
  color: var(--text-light);
  border-radius: var(--radius-full);
  min-width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(220, 53, 69, 0.4);
  padding: 0 6px;
  border: 2px solid var(--bg-primary);
  animation: pulse 2s infinite;
  z-index: 10;
  transition: all var(--transition-base);
}

.contador-productos:empty,
.contador-productos[data-count="0"],
.contador-productos:has-text("0") {
  display: none;
}

/* Ocultar cuando el texto es "0" */
.contador-productos.hidden {
  display: none !important;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 2px 8px rgba(220, 53, 69, 0.4);
  }
  50% {
    transform: scale(1.15);
    box-shadow: 0 4px 12px rgba(220, 53, 69, 0.6);
  }
}

/* Botón de tema */
.theme-toggle-btn {
  background: transparent;
  border: none;
  color: #FFD700;
  font-size: 1.5rem;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  filter: drop-shadow(0 0 4px rgba(255, 215, 0, 0.5));
}

.theme-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: rotate(180deg) scale(1.1);
  filter: drop-shadow(0 0 8px rgba(255, 215, 0, 0.8));
}

.theme-toggle-btn:focus {
  outline: 2px solid rgba(255, 215, 0, 0.5);
  outline-offset: 2px;
}

.theme-toggle-btn i {
  transition: transform var(--transition-base);
}

.montserrat-title {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 1px;
}

.icon-transition {
  transition: transform var(--transition-base);
}

.icon-rotate {
  transform: rotate(180deg);
}

.colordelsol {
  color: #FFD700;
  filter: drop-shadow(0 0 4px rgba(255, 215, 0, 0.5));
}

/* ============================================
   SIDEBAR / OFFCANVAS
   ============================================ */
.desplegable {
  background: linear-gradient(180deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
  box-shadow: var(--shadow-xl);
  width: 400px !important;
  max-width: 85vw !important;
  border-right: 3px solid rgba(255, 255, 255, 0.1);
  display: flex !important;
  flex-direction: column;
  min-height: 100vh !important;
  height: 100vh !important;
}

/* Header del sidebar */
.offcanvas-header {
  border-bottom: 2px solid rgba(255, 255, 255, 0.15);
  padding: 2.5rem 2rem;
  background: rgba(0, 0, 0, 0.1);
  position: relative;
  overflow: hidden;
  min-height: 130px;
  flex-shrink: 0;
}

.offcanvas-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--secondary-color), var(--accent-color), var(--secondary-color));
  background-size: 200% 100%;
  animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.offcanvas-brand-wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.offcanvas-brand-wrapper i {
  font-size: 2.5rem;
  color: var(--accent-color);
  filter: drop-shadow(0 0 8px rgba(245, 230, 211, 0.5));
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

.offcanvas-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 2.25rem;
  color: var(--text-light);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
  margin: 0;
  letter-spacing: 1px;
}

.btn-close-custom {
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  color: var(--text-light);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  cursor: pointer;
  padding: 0;
}

.btn-close-custom:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
  transform: rotate(90deg) scale(1.1);
}

.btn-close-custom i {
  font-size: 1.5rem;
}

/* Body del sidebar */
.offcanvas-body {
  padding: 2.5rem 0;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

.offcanvas-body::-webkit-scrollbar {
  width: 6px;
}

.offcanvas-body::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
}

.offcanvas-body::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
}

.offcanvas-body::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

.sidebar-nav {
  width: 100%;
}

.sidebar-menu {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding: 1.5rem 2.5rem !important;
  color: var(--text-light) !important;
  text-decoration: none;
  font-weight: 500;
  font-size: 1.3rem;
  border-radius: 0;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  margin: 0 var(--spacing-lg);
  border-left: 4px solid transparent;
  min-height: 75px;
}

.sidebar-link::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
  transition: width var(--transition-base);
  z-index: 0;
}

.sidebar-link:hover::before,
.sidebar-link.active::before {
  width: 100%;
}

.sidebar-link:hover,
.sidebar-link.active {
  transform: translateX(10px);
  border-left-color: var(--accent-color);
  background: rgba(255, 255, 255, 0.05);
}

.sidebar-link i:first-child {
  font-size: 1.75rem;
  
  width: 35px;
  text-align: center;
  z-index: 1;
  transition: all var(--transition-base);
  color: var(--accent-color);
}

.sidebar-link:hover i:first-child,
.sidebar-link.active i:first-child {
  transform: scale(1.2);
  filter: drop-shadow(0 0 8px rgba(245, 230, 211, 0.8));
}

.sidebar-link span {
  flex: 1;
  z-index: 1;
  position: relative;
}

.arrow-icon {
  font-size: 1.1rem;
  opacity: 0.5;
  transition: all var(--transition-base);
  z-index: 1;
}

.sidebar-link:hover .arrow-icon,
.sidebar-link.active .arrow-icon {
  opacity: 1;
  transform: translateX(5px);
}

/* Footer del sidebar */
.offcanvas-footer {
  border-top: 2px solid rgba(255, 255, 255, 0.15);
  padding: 2.5rem 2rem;
  background: rgba(0, 0, 0, 0.1);
  margin-top: auto;
  flex-shrink: 0;
  min-height: 180px;
}

.sidebar-social {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.social-link {
  width: 55px;
  height: 55px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: var(--text-light);
  font-size: 1.5rem;
  text-decoration: none;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.social-link::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.social-link:hover::before {
  width: 100px;
  height: 100px;
}

.social-link:hover {
  transform: translateY(-5px) scale(1.1);
  border-color: var(--accent-color);
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 5px 15px rgba(245, 230, 211, 0.3);
}

.social-link i {
  position: relative;
  z-index: 1;
  transition: transform var(--transition-base);
}

.social-link:hover i {
  transform: scale(1.2);
}

.sidebar-copyright {
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
  font-size: 1rem;
  margin: 0;
  line-height: 1.6;
}

.sidebar-copyright span {
  font-size: 0.85rem;
  opacity: 0.6;
}

/* Animación de entrada del sidebar */
.offcanvas.offcanvas-start {
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.offcanvas.offcanvas-start.show {
  transform: translateX(0);
  animation: slideInLeft 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideInLeft {
  from {
    transform: translateX(-100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.offcanvas.offcanvas-start:not(.show) {
  transform: translateX(-100%);
}

/* Backdrop mejorado */
.offcanvas-backdrop {
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

/* Nav link general (para compatibilidad) */
.nav-link {
  color: var(--text-light) !important;
  font-weight: 500;
  padding: var(--spacing-md) var(--spacing-lg) !important;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

/* ============================================
   HERO SECTION
   ============================================ */
.image-container {
  position: relative;
  display: inline-block;
  width: 100%;
  overflow: hidden;
}

.firstimg {
  width: 100%;
  height: 70vh;
  min-height: 500px;
  object-fit: cover;
  filter: brightness(0.4);
  transition: transform 10s ease;
}

.image-container:hover .firstimg {
  transform: scale(1.05);
}

.text-overlay {
  position: absolute;
  top: 50%;
  left: 10%;
  transform: translateY(-50%);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 800;
  text-align: left;
  color: var(--text-light);
  text-shadow: 3px 3px 10px rgba(0, 0, 0, 0.5);
  padding: var(--spacing-lg);
  background: rgba(139, 111, 71, 0.3);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 2px solid rgba(255, 255, 255, 0.2);
  max-width: 600px;
  animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px) translateX(-50%);
  }
  to {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
  }
}

/* ============================================
   SECCIÓN DE LIBROS DESTACADOS
   ============================================ */
#seccion-destacados {
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xxl) var(--spacing-lg);
  margin: var(--spacing-xxl) auto;
  max-width: 1400px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

#seccion-destacados::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--primary-color));
}

#seccion-destacados h2 {
  color: var(--text-primary);
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--spacing-md);
  text-align: center;
  position: relative;
  padding-bottom: var(--spacing-md);
}

#seccion-destacados h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-full);
}

#seccion-destacados .lead {
  color: var(--text-secondary);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xxl);
  text-align: center;
}

/* Cards de productos */
.container-product {
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  transition: all var(--transition-base);
}

.container-product:hover {
  transform: translateY(-8px);
}

.book-container {
  display: flex;
  justify-content: center;
  perspective: 800px;
  margin-bottom: var(--spacing-lg);
}

@keyframes initAnimation {
  0% {
    transform: rotateY(0deg);
    opacity: 0;
  }
  100% {
    transform: rotateY(-30deg);
    opacity: 1;
  }
}

.book {
  width: 200px;
  height: 300px;
  transform-style: preserve-3d;
  transform: rotateY(-30deg);
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  animation: initAnimation 0.8s ease forwards;
  position: relative;
}

.book-container:hover .book,
.book-container:focus .book {
  transform: rotateY(0deg) scale(1.05);
}

.book > :first-child {
  position: absolute;
  top: 0;
  left: 0;
  width: 200px;
  height: 300px;
  transform: translateZ(20px);
  border-radius: 0 8px 8px 0;
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

.book > :first-child img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.book-container:hover .book > :first-child img {
  transform: scale(1.1);
}

.book::before {
  position: absolute;
  content: '';
  left: 0;
  top: 0;
  width: 30px;
  height: 300px;
  transform: translateX(185px) rotateY(90deg);
  background: linear-gradient(90deg,
    #fff 0%, #f9f9f9 5%, #fff 10%, #f9f9f9 15%,
    #fff 20%, #f9f9f9 25%, #fff 30%, #f9f9f9 35%,
    #fff 40%, #f9f9f9 45%, #fff 50%, #f9f9f9 55%,
    #fff 60%, #f9f9f9 65%, #fff 70%, #f9f9f9 75%,
    #fff 80%, #f9f9f9 85%, #fff 90%, #f9f9f9 95%,
    #fff 100%);
  box-shadow: inset -5px 0 10px rgba(0, 0, 0, 0.1);
}

.book::after {
  position: absolute;
  top: 0;
  left: 0;
  content: '';
  width: 200px;
  height: 300px;
  transform: translateZ(-20px);
  background: linear-gradient(135deg, #1a1a1a 0%, #2c2c2c 100%);
  border-radius: 0 8px 8px 0;
  box-shadow: -15px 0 40px 15px rgba(0, 0, 0, 0.4);
}

.descripcion-product {
  text-align: center;
  padding: var(--spacing-lg);
}

.title-product {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.3;
  min-height: 3rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.autor-product {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  font-style: italic;
}

.price-btn-product {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
  flex-wrap: wrap;
}

.price-product {
  background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  margin: 0;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  white-space: nowrap;
}

.no-cambiar-color {
  color: var(--text-primary) !important;
}

.btn-product {
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  border: 2px solid var(--primary-color);
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--text-light);
  font-weight: 600;
  transition: all var(--transition-base);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}

.btn-product:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
  border-color: var(--primary-light);
}

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

#ver-todos-libros {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  border: none;
  border-radius: var(--radius-full);
  padding: var(--spacing-md) var(--spacing-xxl);
  transition: all var(--transition-base);
  font-weight: 600;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-light);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

#ver-todos-libros::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

#ver-todos-libros:hover::before {
  width: 300px;
  height: 300px;
}

#ver-todos-libros:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

#ver-todos-libros:active {
  transform: translateY(-1px);
}

/* ============================================
   FILTROS Y BÚSQUEDA
   ============================================ */
.filters-section {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  border: 1px solid rgba(139, 111, 71, 0.1);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  backdrop-filter: blur(10px);
}

.filters-section h2 {
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.75rem;
  margin-bottom: var(--spacing-sm);
}

.filters-section .text-muted {
  color: var(--text-secondary) !important;
  font-size: 0.9rem;
}

.filters-section .dropdown-toggle {
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: all var(--transition-base);
  border: 2px solid transparent;
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--bg-primary);
  color: var(--text-primary);
}

.filters-section .dropdown-toggle:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-color);
  background: var(--accent-color);
}

.filters-section .dropdown-toggle:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(139, 111, 71, 0.25);
}

.filters-section .dropdown-menu {
  border-radius: var(--radius-lg);
  border: none;
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.filters-section .dropdown-item {
  padding: var(--spacing-md) var(--spacing-lg);
  font-weight: 500;
  transition: all var(--transition-fast);
  border-radius: var(--radius-sm);
  margin: var(--spacing-xs) 0;
}

.filters-section .dropdown-item:hover {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--text-light);
  transform: translateX(5px);
}

.filters-section .dropdown-item i {
  width: 20px;
  text-align: center;
  margin-right: var(--spacing-sm);
}

.filters-section .input-group .form-control {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  border: 2px solid #e9ecef;
  font-weight: 500;
  transition: all var(--transition-base);
  padding: var(--spacing-sm) var(--spacing-lg);
}

.filters-section .input-group .form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(139, 111, 71, 0.25);
}

.filters-section .input-group .btn {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  border: 2px solid var(--primary-color);
  border-left: none;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--text-light);
  transition: all var(--transition-base);
  padding: var(--spacing-sm) var(--spacing-lg);
}

.filters-section .input-group .btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

#volver-destacados {
  border-radius: var(--radius-full);
  font-weight: 600;
  transition: all var(--transition-base);
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: transparent;
}

#volver-destacados:hover {
  transform: translateX(-5px);
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--text-light);
  box-shadow: var(--shadow-md);
}

.filter-badge {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--text-light);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  box-shadow: var(--shadow-sm);
}

.filter-badge .remove-filter {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: var(--text-light);
  border-radius: 50%;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-badge .remove-filter:hover {
  background: rgba(255, 255, 255, 0.4);
  transform: rotate(90deg);
}

#clear-filters {
  border-radius: var(--radius-full);
  font-weight: 600;
  transition: all var(--transition-base);
  padding: var(--spacing-xs) var(--spacing-md);
}

#clear-filters:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ============================================
   CARRITO
   ============================================ */
.bg-article {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 249, 250, 0.95) 100%);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(139, 111, 71, 0.1);
}

.contenedor-carrito {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.contenedor-carrito > div {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(139, 111, 71, 0.1);
  transition: all var(--transition-base);
}

.contenedor-carrito > div:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.contenedor-carrito .img-book {
  width: 100%;
  max-width: 200px;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.contenedor-carrito .img-book:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
}

.contenedor-carrito h2 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.contenedor-carrito p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
  font-size: 1rem;
}

.contenedor-carrito .btn {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  border: none;
  color: var(--text-light);
  font-weight: 600;
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.contenedor-carrito .btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
}

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

.contenedor-carrito hr {
  border-color: rgba(139, 111, 71, 0.2);
  margin: var(--spacing-lg) 0;
}

.carrito-h2 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: var(--spacing-xl);
  position: relative;
  padding-bottom: var(--spacing-md);
}

.carrito-h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-full);
}

.scrollbox {
  overflow: auto;
  max-width: 100%;
  max-height: 300px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  border: 1px solid rgba(139, 111, 71, 0.1);
  box-shadow: inset var(--shadow-sm);
}

.scrollbox::-webkit-scrollbar {
  width: 8px;
}

.scrollbox::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
}

.scrollbox::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  border-radius: var(--radius-sm);
}

.scrollbox::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* ============================================
   CONTACTO
   ============================================ */
.section-header {
  text-align: center;
  padding: var(--spacing-xxl) 0;
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 300;
  text-transform: uppercase;
  letter-spacing: 8px;
  color: var(--text-primary);
  position: relative;
  margin-bottom: var(--spacing-xxl);
}

.section-header::after {
  content: '';
  position: absolute;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-full);
}

.contact-wrapper {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: flex-start;
  margin: 0 auto;
  padding: var(--spacing-xl);
  position: relative;
  max-width: 1000px;
  gap: var(--spacing-xxl);
}

.form-horizontal {
  max-width: 450px;
  width: 100%;
}

.form-control,
textarea {
  max-width: 100%;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: all var(--transition-base);
  font-family: var(--font-primary);
  letter-spacing: 0.5px;
}

.form-control:focus,
textarea:focus {
  background: var(--bg-primary);
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(139, 111, 71, 0.25);
  outline: none;
}

textarea {
  min-height: 150px;
  resize: vertical;
}

.send-button {
  margin-top: var(--spacing-lg);
  height: 50px;
  width: 100%;
  overflow: hidden;
  transition: all var(--transition-base);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  border: none;
  color: var(--text-light);
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-md);
}

.send-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.alt-send-button {
  width: 100%;
  height: 100%;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-size: 1rem;
  letter-spacing: 2px;
}

.alt-send-button:hover {
  transform: translateY(-2px);
}

.contact-list {
  list-style-type: none;
  padding: 0;
}

.list-item {
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 1.1rem;
}

.contact-text {
  font-family: var(--font-primary);
  font-weight: 400;
  font-size: 1.1rem;
  letter-spacing: 1px;
  color: var(--text-primary);
}

.contact-text a {
  color: var(--primary-color);
  transition: all var(--transition-base);
  text-decoration: none;
}

.contact-text a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.social-media-list {
  position: relative;
  font-size: 1.5rem;
  text-align: center;
  width: 100%;
  margin: var(--spacing-xl) auto;
  padding: 0;
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.social-media-list li {
  position: relative;
  display: inline-block;
  height: 60px;
  width: 60px;
  line-height: 60px;
  border-radius: 50%;
  color: var(--text-light);
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

.social-media-list li:after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 60px;
  height: 60px;
  line-height: 60px;
  border-radius: 50%;
  opacity: 0;
  box-shadow: 0 0 0 3px var(--primary-color);
  transition: all var(--transition-base);
}

.social-media-list li:hover {
  transform: translateY(-5px) scale(1.1);
  box-shadow: var(--shadow-hover);
}

.social-media-list li:hover:after {
  opacity: 1;
  transform: scale(1.2);
}

.social-media-list li a {
  color: var(--text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--text-light);
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
  margin-top: auto;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
}

footer .links a {
  color: var(--text-light);
  font-weight: 500;
  transition: all var(--transition-base);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  display: inline-block;
}

footer .links a:hover {
  color: var(--accent-color);
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.1);
}

.redessociales {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  flex-wrap: wrap;
}

.redessociales a {
  color: var(--text-light);
  font-size: 1.75rem;
  transition: all var(--transition-base);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
}

.redessociales a:hover {
  transform: translateY(-5px) scale(1.15);
  background: rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow-md);
}

/* ============================================
   WHATSAPP BUTTON
   ============================================ */
.whatsapp-button {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 65px;
  height: 65px;
  z-index: var(--z-whatsapp);
  transition: all var(--transition-base);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.whatsapp-button:hover {
  transform: scale(1.1) translateY(-5px);
}

.whatsapp-button img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
}

.whatsapp-button:hover img {
  box-shadow: var(--shadow-hover);
}

/* ============================================
   TEMA OSCURO
   ============================================ */
.fondo-negro {
  background-color: var(--bg-dark);
  color: var(--text-light);
}

.navegador-oscuro {
  background-color: var(--bg-dark-secondary) !important;
}

.pie-oscuro {
  background-color: var(--bg-dark-secondary) !important;
}

.text-light-oscuro {
  color: #E0E0E0;
}

/* ============================================
   UTILIDADES
   ============================================ */
.oswald-author {
  font-family: var(--font-heading);
  font-weight: 400;
  font-style: normal;
}

.montserrat-descripcion {
  font-family: var(--font-heading);
  font-weight: 400;
  font-style: normal;
}

.font {
  font-size: 1.4rem;
}

.img-book {
  width: 200px;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.carrousel {
  width: 100%;
  height: 90vh;
  min-height: 500px;
  object-fit: cover;
  filter: brightness(0.7);
}

.icono-empresa {
  object-fit: contain;
  max-height: 100px;
  filter: grayscale(100%);
  transition: all var(--transition-base);
  padding: var(--spacing-lg);
}

.icono-empresa:hover {
  filter: grayscale(0%);
  transform: scale(1.1);
}

/* ============================================
   RESPONSIVE
   ============================================ */
/* Navbar Responsive */
@media (max-width: 768px) {
  .navbar-content {
    padding: var(--spacing-sm) var(--spacing-md) !important;
    min-height: 60px;
  }

  .navbar-toggler-custom {
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
    padding: var(--spacing-xs);
  }

  .navbar-brand-custom h1 {
    font-size: 1.25rem !important;
  }

  .cart-icon-wrapper,
  .theme-toggle-btn {
    width: 40px;
    height: 40px;
    font-size: 1.25rem;
  }

  .contador-productos {
    min-width: 20px;
    height: 20px;
    font-size: 0.65rem;
    top: -6px;
    right: -6px;
    padding: 0 4px;
  }

  .navbar-actions {
    gap: var(--spacing-sm);
  }
}

@media (max-width: 576px) {
  .navbar-content {
    padding: var(--spacing-xs) var(--spacing-sm) !important;
    min-height: 55px;
  }

  .navbar-toggler-custom {
    width: 35px;
    height: 35px;
    font-size: 1.25rem;
  }

  .navbar-brand-custom h1 {
    font-size: 1.1rem !important;
    letter-spacing: 0.5px;
  }

  .cart-icon-wrapper,
  .theme-toggle-btn {
    width: 35px;
    height: 35px;
    font-size: 1.1rem;
  }

  .contador-productos {
    min-width: 18px;
    height: 18px;
    font-size: 0.6rem;
    top: -5px;
    right: -5px;
    padding: 0 3px;
  }
}

@media (max-width: 1200px) {
  .contact-wrapper {
    flex-direction: column;
    align-items: center;
  }
  
  .form-horizontal {
    max-width: 100%;
  }
}

@media (max-width: 992px) {
  .text-overlay {
    left: 5%;
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    padding: var(--spacing-md);
  }
  
  .book {
    width: 180px;
    height: 270px;
  }
  
  .book > :first-child {
    width: 180px;
    height: 270px;
  }
  
  .book::after {
    width: 180px;
    height: 270px;
  }
}

@media (max-width: 768px) {
  .filters-section {
    padding: var(--spacing-lg);
  }
  
  .filters-section .row > div {
    margin-bottom: var(--spacing-md);
  }
  
  .filters-section h2 {
    font-size: 1.5rem;
    text-align: center;
  }
  
  #volver-destacados {
    width: 100%;
    margin-bottom: var(--spacing-md);
  }
  
  .price-btn-product {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn-product {
    width: 100%;
  }
  
  .whatsapp-button {
    width: 55px;
    height: 55px;
    bottom: 20px;
    right: 20px;
  }
  
  .firstimg {
    height: 50vh;
    min-height: 400px;
  }
  
  .text-overlay {
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    max-width: 90%;
  }
}

@media (max-width: 576px) {
  .section-header {
    font-size: 2rem;
    letter-spacing: 4px;
    padding: var(--spacing-xl) 0;
  }
  
  .contact-wrapper {
    padding: var(--spacing-md);
  }
  
  .form-control,
  textarea {
    width: 100%;
  }
  
  .social-media-list li {
    height: 50px;
    width: 50px;
    line-height: 50px;
  }
  
  .social-media-list li:after {
    width: 50px;
    height: 50px;
    line-height: 50px;
  }
  
  .book {
    width: 150px;
    height: 225px;
  }
  
  .book > :first-child {
    width: 150px;
    height: 225px;
  }
  
  .book::after {
    width: 150px;
    height: 225px;
  }
  
  .book::before {
    height: 225px;
    transform: translateX(135px) rotateY(90deg);
  }
}

/* ============================================
   ANIMACIONES Y TRANSICIONES
   ============================================ */
#todos-los-libros,
#seccion-destacados {
  transition: opacity var(--transition-slow);
}

.container-product {
  animation: fadeIn 0.6s ease forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Smooth scroll */
html {
  scroll-behavior: smooth;
}

/* Focus visible para accesibilidad */
*:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}