/* ==========================================================================
   UNINEXO UCASAL 2030 - ESTILOS DEL PROTOTIPO INTERACTIVO (MODO CLARO)
   ========================================================================== */

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

:root {
  /* Paleta de Colores Corporativos (Alineados al Logo) */
  --blue-primary: hsl(220, 90%, 35%);      /* Azul UCASAL / Nexo */
  --blue-hover: hsl(220, 90%, 28%);
  --blue-light: hsl(220, 90%, 95%);
  --blue-muted: hsl(220, 30%, 60%);
  
  --red-primary: hsl(354, 85%, 50%);       /* Rojo Uni */
  --red-hover: hsl(354, 85%, 43%);
  --red-light: hsl(354, 85%, 95%);
  
  --green-sustainability: hsl(142, 72%, 29%); /* Verde ODS 12 / Huella Verde */
  --green-light: hsl(142, 72%, 95%);
  
  /* Tonos Neutros (Modo Claro Premium) */
  --bg-primary: hsl(220, 20%, 97%);
  --bg-card: hsl(0, 0%, 100%);
  --border-color: hsl(220, 15%, 90%);
  --text-main: hsl(220, 25%, 15%);
  --text-muted: hsl(220, 15%, 50%);
  --text-on-primary: hsl(0, 0%, 100%);
  
  /* Sombras y Efectos */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.1);
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-blur: blur(12px);
  
  /* Fuentes y Bordes */
  --font-title: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  /* Transiciones */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reseteo y Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  width: 100% !important;
  max-width: 100% !important;
  overflow-x: hidden !important;
}

body {
  font-family: var(--font-body);
  background-color: #f0f2f5;
  color: var(--text-main);
  line-height: 1.5;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

/* Contenedor Responsivo Principal */
#tablet-wrapper {
  width: 100% !important;
  height: 100% !important;
  background-color: var(--bg-primary);
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}



/* Pantalla de Login / Landing */
.screen {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal), transform var(--transition-normal);
  transform: translateY(20px);
  z-index: 1;
}

.screen.active {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
  z-index: 10;
}

/* Vista de Bienvenida */
#login-screen {
  background: var(--bg-primary);
  justify-content: center;
  align-items: center;
  padding: 0;
  overflow: hidden;
  width: 100% !important;
  height: 100% !important;
}

@keyframes scaleUp {
  0% { transform: scale(0.98); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.brand-logo-large {
  width: 140px;
  height: 140px;
  object-fit: contain;
  margin-bottom: 20px;
}

.landing-title {
  font-family: var(--font-title);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--blue-primary);
  margin-bottom: 12px;
  line-height: 1.2;
}

.landing-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 450px;
  margin-bottom: 24px;
  line-height: 1.5;
}

.login-split-container {
  display: flex;
  flex-direction: row;
  width: 100vw;
  height: 100vh;
  background: var(--bg-card);
  overflow: hidden;
  animation: scaleUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.login-info-panel {
  width: 50%;
  background: linear-gradient(135deg, hsl(220, 90%, 98%) 0%, hsl(220, 90%, 93%) 100%);
  padding: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border-right: 1px solid var(--border-color);
  justify-content: center;
}

.login-form-panel {
  width: 50%;
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.login-box-header {
  margin-bottom: 24px;
  text-align: left;
}

.login-box-header h3 {
  font-family: var(--font-title);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--blue-primary);
  margin-bottom: 4px;
}

.login-box-header p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.pillars-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
  margin-top: 24px;
  text-align: left;
}

.pillar-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.pillar-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background-color: var(--blue-light);
  color: var(--blue-primary);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.pillar-icon.green-icon {
  background-color: var(--green-light);
  color: var(--green-sustainability);
}

.pillar-icon.red-icon {
  background-color: var(--red-light);
  color: var(--red-primary);
}

.pillar-text h4 {
  font-family: var(--font-title);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 2px;
}

.pillar-text p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.demo-box {
  background-color: var(--bg-primary);
  border: 1px dashed var(--green-sustainability);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
  text-align: left;
}

.demo-badge-tip {
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--green-sustainability);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 4px;
  letter-spacing: 0.5px;
}

.demo-box h4 {
  font-family: var(--font-title);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.demo-box p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  line-height: 1.4;
}

.divider-text {
  text-align: center;
  margin: 16px 0;
  font-size: 0.8rem;
  color: var(--text-muted);
  position: relative;
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 1px;
}

.divider-text::before,
.divider-text::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 25%;
  height: 1px;
  background-color: var(--border-color);
}

.divider-text::before { left: 0; }
.divider-text::after { right: 0; }

.input-wrapper-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-wrapper-icon i {
  position: absolute;
  left: 16px;
  color: var(--text-muted);
  font-size: 1rem;
}

.input-wrapper-icon .input-field {
  padding-left: 44px;
}

/* Adaptación para pantallas móviles */
@media (max-width: 767px) {
  #login-screen {
    padding: 0 !important;
  }

  .login-split-container {
    flex-direction: column;
    max-height: 100%;
    overflow-y: auto;
    border: none;
    box-shadow: none;
    background: transparent;
  }

  .login-info-panel,
  .login-form-panel {
    width: 100%;
    padding: 20px 10px;
    border-right: none;
  }

  .login-info-panel {
    background: transparent;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
  }
}

.login-form-container {
  width: 100%;
}

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

.input-group label {
  display: block;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
  color: var(--text-main);
}

.input-field {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border: 2px solid var(--border-color);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
  outline: none;
  background-color: var(--bg-primary);
}

.input-field:focus {
  border-color: var(--blue-primary);
}

.button-primary {
  width: 100%;
  background-color: var(--blue-primary);
  color: var(--text-on-primary);
  border: none;
  border-radius: var(--radius-md);
  padding: 16px;
  font-family: var(--font-title);
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  box-shadow: 0 4px 12px rgba(0, 70, 148, 0.2);
}

.button-primary:hover {
  background-color: var(--blue-hover);
}

.button-primary:active {
  transform: scale(0.98);
}

.button-secondary {
  width: 100%;
  background-color: var(--red-primary);
  color: var(--text-on-primary);
  border: none;
  border-radius: var(--radius-md);
  padding: 14px;
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  margin-top: 12px;
  transition: background-color var(--transition-fast);
  box-shadow: 0 4px 12px rgba(227, 26, 34, 0.2);
}

.button-secondary:hover {
  background-color: var(--red-hover);
}

.demo-login-btn {
  background-color: var(--green-sustainability);
  box-shadow: 0 4px 12px rgba(40, 167, 69, 0.2);
}

.demo-login-btn:hover {
  background-color: hsl(142, 72%, 23%);
}

.error-message {
  color: var(--red-primary);
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 6px;
  display: none;
}

.landing-footer {
  margin-top: 25px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Estructura de la Aplicación Principal */
.app-header {
  height: 70px;
  background-color: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.header-logo {
  height: 42px;
  width: 42px;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.header-title-container {
  display: flex;
  flex-direction: column;
}

.header-brand-name {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--blue-primary);
  line-height: 1;
}

.header-brand-tag {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-top: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.green-points-badge {
  background-color: var(--green-light);
  color: var(--green-sustainability);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid rgba(40, 167, 69, 0.15);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.green-points-badge:hover {
  transform: translateY(-2px);
}

.user-avatar-header {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: var(--blue-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-family: var(--font-title);
  cursor: pointer;
  border: 2px solid white;
  box-shadow: var(--shadow-sm);
}

/* Área de Contenido Principal */
.app-content {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  padding-bottom: 90px; /* Espacio para el nav bar */
}

/* Barra de Navegación Inferior */
.bottom-nav {
  height: 75px;
  background-color: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--border-color);
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 100;
}

/* Barra de Navegación de Escritorio */
.desktop-nav {
  display: none; /* Oculto por defecto en móvil/tablet */
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  text-decoration: none;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.8rem;
  cursor: pointer;
  transition: color var(--transition-fast);
  width: 60px;
  height: 100%;
  border: none;
  background: none;
  position: relative;
}

.nav-item i {
  font-size: 1.4rem;
  margin-bottom: 4px;
  transition: transform var(--transition-fast);
}

.nav-item.active {
  color: var(--blue-primary);
}

.nav-item.active i {
  transform: translateY(-2px);
}

.nav-item.active::after {
  content: "";
  position: absolute;
  top: 0;
  width: 30px;
  height: 3px;
  background-color: var(--blue-primary);
  border-radius: 0 0 3px 3px;
}

/* Indicador de Notificaciones de Chat */
.nav-item.has-notification::before {
  content: "";
  position: absolute;
  top: 10px;
  right: 12px;
  width: 8px;
  height: 8px;
  background-color: var(--red-primary);
  border-radius: var(--radius-full);
  z-index: 5;
  box-shadow: 0 0 0 2px var(--bg-card);
}

/* Ajustes específicos para navegación de escritorio */
.desktop-nav .nav-item {
  flex-direction: row;
  gap: 8px;
  width: auto;
  height: auto;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 700;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.desktop-nav .nav-item i {
  font-size: 1.1rem;
  margin-bottom: 0;
}

.desktop-nav .nav-item.active::after {
  display: none; /* Remover línea de underline en la cabecera */
}

.desktop-nav .nav-item.active {
  background-color: var(--blue-light);
  color: var(--blue-primary);
}

.desktop-nav .nav-item:hover {
  background-color: var(--bg-primary);
  color: var(--blue-primary);
}

.desktop-nav .nav-item.active:hover {
  background-color: var(--blue-light);
}

.desktop-nav .nav-item.has-notification::before {
  top: 6px;
  right: 8px;
}

/* Estilos de la Pestaña HOME */
.welcome-banner {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 1.5rem;
  margin-bottom: 4px;
  color: var(--text-main);
}

.welcome-sub {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

/* Buscador Inteligente */
.search-container {
  position: relative;
  margin-bottom: 24px;
}

.search-input-wrapper {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 4px 8px 4px 16px;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input-wrapper:focus-within {
  border-color: var(--blue-primary);
  box-shadow: var(--shadow-md);
}

.search-icon {
  color: var(--text-muted);
  margin-right: 12px;
  font-size: 1.1rem;
}

.global-search-input {
  border: none;
  outline: none;
  background: transparent;
  flex: 1;
  padding: 12px 0;
  font-family: var(--font-body);
  font-size: 1rem;
}

.ai-search-badge {
  background: linear-gradient(135deg, var(--blue-primary), var(--red-primary));
  color: white;
  border: none;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.8rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: opacity var(--transition-fast);
}

.ai-search-badge:hover {
  opacity: 0.9;
}

/* Tarjeta de Alerta de Seguridad IA */
.ai-alert-banner {
  background: linear-gradient(135deg, hsl(220, 90%, 98%) 0%, hsl(220, 90%, 95%) 100%);
  border-left: 5px solid var(--blue-primary);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}

.ai-alert-icon {
  background-color: var(--blue-primary);
  color: white;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.ai-alert-content h4 {
  font-family: var(--font-title);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--blue-primary);
  margin-bottom: 4px;
}

.ai-alert-content p {
  font-size: 0.85rem;
  color: var(--text-main);
}

/* Carrusel de Novedades */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-title);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

.section-link {
  font-family: var(--font-title);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--blue-primary);
  cursor: pointer;
}

.news-carousel {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 8px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.news-carousel::-webkit-scrollbar {
  height: 4px;
}

.news-carousel::-webkit-scrollbar-thumb {
  background-color: var(--border-color);
  border-radius: var(--radius-full);
}

.news-card {
  flex: 0 0 300px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  scroll-snap-align: start;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 150px;
  position: relative;
  overflow: hidden;
}

.news-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background-color: var(--red-primary);
}

.news-card.ucasal-news::before {
  background-color: var(--blue-primary);
}

.news-tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--red-primary);
  margin-bottom: 6px;
}

.news-card.ucasal-news .news-tag {
  color: var(--blue-primary);
}

.news-title {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-main);
  margin-bottom: auto;
}

.news-footer {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Categorías */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 30px;
}

.category-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.category-item:hover {
  transform: translateY(-3px);
  border-color: var(--blue-primary);
  box-shadow: var(--shadow-md);
}

.category-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--blue-light);
  color: var(--blue-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin: 0 auto 10px auto;
}

.category-item.red-cat .category-icon {
  background-color: var(--red-light);
  color: var(--red-primary);
}

.category-item.green-cat .category-icon {
  background-color: var(--green-light);
  color: var(--green-sustainability);
}

.category-name {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text-main);
}

/* PESTAÑA MARKETPLACE */
.filter-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  overflow-x: auto;
  padding-bottom: 6px;
}

.filter-btn {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.filter-btn.active {
  background-color: var(--blue-primary);
  border-color: var(--blue-primary);
  color: white;
  box-shadow: 0 4px 10px rgba(0, 70, 148, 0.15);
}

/* Grid de Productos */
.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* En tablets horizontales, 3 columnas */
@media (min-width: 768px) {
  .products-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.product-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.product-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background-color: var(--blue-primary);
  color: white;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.7rem;
  z-index: 2;
  text-transform: uppercase;
}

.product-badge.swap-badge {
  background-color: var(--red-primary);
}

.product-image-container {
  height: 140px;
  background-color: #f7fafc;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-image-container i {
  font-size: 3rem;
  color: #cbd5e0;
}

.product-info {
  padding: 14px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.product-category {
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.product-title {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  height: 2.6em;
}

.product-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
}

.product-price {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--blue-primary);
}

.product-card.product-swap-only .product-price {
  color: var(--red-primary);
  font-size: 0.85rem;
  font-weight: 700;
}

.product-seller {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Botón flotante para Publicar */
.fab-btn {
  position: absolute;
  bottom: 95px;
  right: 24px;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background-color: var(--red-primary);
  color: white;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 4px 16px rgba(227, 26, 34, 0.4);
  cursor: pointer;
  z-index: 90;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.fab-btn:hover {
  background-color: var(--red-hover);
  transform: scale(1.05);
}

/* PESTAÑA TUTORÍAS (CLASES) */
.tutors-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tutor-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  gap: 16px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast);
  cursor: pointer;
}

.tutor-card:hover {
  transform: translateY(-2px);
}

.tutor-avatar {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  background-color: var(--blue-light);
  color: var(--blue-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.3rem;
  flex-shrink: 0;
  border: 1px solid rgba(0, 70, 148, 0.1);
}

.tutor-details {
  flex: 1;
}

.tutor-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 4px;
}

.tutor-name {
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
}

.tutor-rating {
  color: #ecc94b;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 3px;
  font-weight: 700;
}

.tutor-career {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.tutor-subjects {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.subject-badge {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

.tutor-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tutor-cost {
  font-family: var(--font-title);
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--green-sustainability);
}

.tutor-contact-btn {
  background-color: var(--blue-primary);
  color: white;
  border: none;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.8rem;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.tutor-contact-btn:hover {
  background-color: var(--blue-hover);
}

/* PESTAÑA CHATS */
.chats-screen-layout {
  display: flex;
  height: 100%;
}

.chats-list-panel {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.chat-list-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  background-color: var(--bg-card);
}

.chat-list-item:hover {
  background-color: var(--bg-primary);
}

.chat-list-item.active-chat {
  background-color: var(--blue-light);
}

.chat-item-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background-color: var(--blue-muted);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-title);
  font-weight: 700;
  flex-shrink: 0;
}

.chat-item-info {
  flex: 1;
}

.chat-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.chat-item-name {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-main);
}

.chat-item-time {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.chat-item-preview {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 200px;
}

.chat-item-unread {
  background-color: var(--red-primary);
  color: white;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  margin-left: 8px;
}

/* Vista del Chat de Conversación Activa */
.chat-conversation-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-primary);
  z-index: 80;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
}

.chat-conversation-wrapper.active {
  transform: translateX(0);
}

.chat-header {
  height: 70px;
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
}

.chat-back-btn {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--blue-primary);
  cursor: pointer;
  padding: 8px;
}

.chat-header-name {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-main);
  flex: 1;
}

.chat-header-action-btn {
  background-color: var(--green-sustainability);
  color: white;
  border: none;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.8rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}

.chat-messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.message-bubble {
  max-width: 70%;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  position: relative;
  box-shadow: var(--shadow-sm);
}

.message-bubble.received {
  background-color: var(--bg-card);
  color: var(--text-main);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.message-bubble.sent {
  background-color: var(--blue-primary);
  color: white;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.message-time {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 4px;
  text-align: right;
}

.message-bubble.sent .message-time {
  color: rgba(255, 255, 255, 0.7);
}

/* Sugerencia de Punto Seguro de IA en el Chat */
.chat-ai-suggestion {
  align-self: center;
  background: linear-gradient(135deg, hsl(220, 90%, 98%) 0%, hsl(220, 90%, 95%) 100%);
  border: 1px dashed var(--blue-primary);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  max-width: 90%;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 10px 0;
  box-shadow: var(--shadow-sm);
}

.chat-ai-suggestion i {
  color: var(--blue-primary);
  font-size: 1.2rem;
  margin-top: 2px;
}

.chat-ai-suggestion p {
  font-size: 0.8rem;
  color: var(--text-main);
  line-height: 1.4;
}

.chat-ai-suggestion strong {
  color: var(--blue-primary);
}

.chat-input-bar {
  background-color: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 12px 16px;
  display: flex;
  gap: 12px;
  align-items: center;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.chat-input-field {
  flex: 1;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 12px 18px;
  outline: none;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.chat-input-field::placeholder {
  color: var(--text-muted);
  opacity: 0.8;
}

.chat-input-field:focus {
  border-color: var(--blue-primary);
  background-color: var(--bg-card);
  box-shadow: 0 0 0 3px rgba(0, 70, 148, 0.15);
}

.chat-send-btn {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background-color: var(--blue-primary);
  color: white;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.chat-send-btn:hover {
  background-color: var(--blue-hover);
  transform: scale(1.05);
}

.chat-send-btn:active {
  transform: scale(0.95);
}

/* PESTAÑA PERFIL */
.profile-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.profile-avatar-large {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  background-color: var(--blue-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 2rem;
  margin: 0 auto 16px auto;
  border: 3px solid var(--bg-primary);
  box-shadow: var(--shadow-md);
}

.profile-name {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--text-main);
  margin-bottom: 4px;
}

.profile-email {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.profile-badges {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}

.badge-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-item.student-badge {
  background-color: var(--blue-light);
  color: var(--blue-primary);
}

.badge-item.huella-badge {
  background-color: var(--green-light);
  color: var(--green-sustainability);
}

/* Estadísticas de Sostenibilidad */
.sustainability-stats {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  text-align: center;
}

.stat-item h3 {
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--blue-primary);
  margin-bottom: 4px;
}

.stat-item p {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 700;
}

.stat-item.green-stat h3 {
  color: var(--green-sustainability);
}

/* MODALES Y CAPAS SUPERPUESTAS */
.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  display: flex;
  justify-content: center;
  align-items: flex-end;
}

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

.modal-sheet {
  background-color: var(--bg-card);
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
  width: 100%;
  max-width: 600px;
  max-height: 90%;
  overflow-y: auto;
  padding: 24px;
  box-shadow: var(--shadow-lg);
  transform: translateY(100%);
  transition: transform var(--transition-normal);
}

.overlay.active .modal-sheet {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.modal-title {
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.modal-close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
}

/* Detalle del Producto */
.detail-image-box {
  height: 200px;
  background-color: var(--bg-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 4rem;
  color: #cbd5e0;
}

.detail-price-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.detail-price {
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--blue-primary);
}

.detail-desc {
  font-size: 0.9rem;
  color: var(--text-main);
  margin-bottom: 20px;
  line-height: 1.6;
}

.detail-meta-box {
  background-color: var(--bg-primary);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.meta-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
}

.meta-row span:first-child {
  color: var(--text-muted);
}

.meta-row span:last-child {
  font-weight: 600;
  color: var(--text-main);
}

/* Formulario de Publicación */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 6px;
  color: var(--text-main);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.ai-generator-widget {
  background: linear-gradient(135deg, hsl(220, 90%, 98%) 0%, hsl(220, 90%, 95%) 100%);
  border: 1px dashed var(--blue-primary);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.ai-generator-widget p {
  font-size: 0.8rem;
  color: var(--text-main);
}

.ai-generator-widget button {
  background-color: var(--blue-primary);
  color: white;
  border: none;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.75rem;
  cursor: pointer;
  white-space: nowrap;
}

.ai-generator-widget button:disabled {
  background-color: var(--blue-muted);
  cursor: not-allowed;
}

/* Modal del Escáner QR */
.qr-scanner-body {
  text-align: center;
  padding: 20px 0;
}

.qr-scanner-viewfinder {
  width: 200px;
  height: 200px;
  border: 4px solid var(--blue-primary);
  border-radius: var(--radius-md);
  margin: 0 auto 20px auto;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: #000;
}

.qr-laser {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--red-primary);
  box-shadow: 0 0 8px var(--red-primary);
  animation: scanning 2s infinite linear;
}

@keyframes scanning {
  0% { transform: translateY(0); }
  50% { transform: translateY(196px); }
  100% { transform: translateY(0); }
}

.qr-code-img {
  width: 160px;
  height: 160px;
  object-fit: contain;
}

.success-qr-animation {
  color: var(--green-sustainability);
  font-size: 4rem;
  animation: popSuccess 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  display: none;
}

@keyframes popSuccess {
  0% { transform: scale(0.5); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.qr-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 12px;
}

/* Carrusel de Trueques en Pestaña Intercambios */
.swaps-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.swap-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.swap-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.swap-user-info {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.swap-item-flow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-primary);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  gap: 10px;
}

.swap-flow-col {
  flex: 1;
}

.swap-flow-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.swap-flow-value {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.swap-flow-value.val-get {
  color: var(--blue-primary);
}

.swap-flow-value.val-give {
  color: var(--red-primary);
}

.swap-arrow-icon {
  color: var(--text-muted);
  font-size: 1.2rem;
}

.swap-action-row {
  display: flex;
  justify-content: flex-end;
}

.swap-propose-btn {
  background-color: var(--red-primary);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(227, 26, 34, 0.15);
  transition: background-color var(--transition-fast);
}

.swap-propose-btn:hover {
  background-color: var(--red-hover);
}

/* ==========================================
   UTILIDADES Y ESTILOS GLOBALES DE DISEÑO
   ========================================== */

/* Utilidades de Visibilidad */
.mobile-only {
  display: block;
}
.desktop-only {
  display: none !important;
}

/* Ocultar barra lateral en móviles/tablets */
.desktop-sidebar {
  display: none;
}

/* Layout Principal por defecto */
.app-main-layout {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

/* Menú Desplegable de Usuario (Avatar Dropdown) */
.user-avatar-container {
  position: relative;
}
.user-dropdown-menu {
  position: absolute;
  top: 50px;
  right: 0;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  width: 220px;
  padding: 8px 0;
  z-index: 150;
  display: none;
  flex-direction: column;
  animation: slideDownFade 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.user-dropdown-menu.active {
  display: flex;
}
.dropdown-user-info {
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.dropdown-user-info strong {
  font-size: 0.95rem;
  color: var(--text-main);
  font-weight: 700;
}
.dropdown-user-info span {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.dropdown-divider {
  height: 1px;
  background-color: var(--border-color);
  margin: 6px 0;
}
.dropdown-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 16px;
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-main);
  cursor: pointer;
  text-align: left;
  transition: background-color var(--transition-fast);
}
.dropdown-item i {
  font-size: 1rem;
  color: var(--text-muted);
  width: 18px;
  text-align: center;
}
.dropdown-item:hover {
  background-color: var(--bg-primary);
  color: var(--blue-primary);
}
.dropdown-item:hover i {
  color: var(--blue-primary);
}
.dropdown-item.logout-item {
  color: var(--red-primary);
}
.dropdown-item.logout-item i {
  color: var(--red-primary);
}
.dropdown-item.logout-item:hover {
  background-color: var(--red-light);
  color: var(--red-primary);
}

@keyframes slideDownFade {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================
   TEMA OSCURO - CENTRALIZACIÓN DE VARIABLES
   ========================================== */
body.dark-theme {
  --bg-primary: hsl(220, 20%, 10%);
  --bg-card: hsl(220, 20%, 14%);
  --border-color: hsl(220, 15%, 22%);
  --text-main: hsl(220, 15%, 90%);
  --text-muted: hsl(220, 15%, 60%);
  --glass-bg: rgba(20, 24, 32, 0.85);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.45);
}

body.dark-theme {
  background-color: #0b0d10;
}

body.dark-theme .news-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
}

body.dark-theme .news-card.ucasal-news {
  background: linear-gradient(135deg, hsl(220, 20%, 18%) 0%, hsl(220, 20%, 14%) 100%);
}

body.dark-theme .tutor-card,
body.dark-theme .product-card,
body.dark-theme .swap-card,
body.dark-theme .profile-card,
body.dark-theme .sustainability-stats,
body.dark-theme .chat-list-item,
body.dark-theme .chat-header,
body.dark-theme .chat-input-bar,
body.dark-theme .modal-sheet,
body.dark-theme .ai-generator-widget,
body.dark-theme .ai-alert-banner,
body.dark-theme .demo-box {
  background-color: var(--bg-card);
  border-color: var(--border-color);
}

body.dark-theme .ai-alert-banner {
  background: linear-gradient(135deg, hsl(220, 20%, 16%) 0%, hsl(220, 20%, 12%) 100%) !important;
  border-left-color: #5da0ff !important;
}

body.dark-theme .ai-alert-content h4 {
  color: #5da0ff !important;
}

body.dark-theme .ai-generator-widget {
  background: linear-gradient(135deg, hsl(220, 20%, 16%) 0%, hsl(220, 20%, 12%) 100%) !important;
}

body.dark-theme .login-info-panel {
  background: linear-gradient(135deg, hsl(220, 20%, 14%) 0%, hsl(220, 20%, 10%) 100%) !important;
  border-right-color: var(--border-color) !important;
}

body.dark-theme .input-field {
  background-color: var(--bg-primary);
  border-color: var(--border-color);
  color: var(--text-main);
}

body.dark-theme .chat-input-field {
  background-color: var(--bg-primary);
  border-color: var(--border-color);
  color: var(--text-main);
}

body.dark-theme .chat-input-field::placeholder {
  color: var(--text-muted);
}

body.dark-theme .chat-input-field:focus {
  border-color: var(--blue-primary);
  background-color: var(--bg-card);
  box-shadow: 0 0 0 3px rgba(93, 160, 255, 0.25);
}

body.dark-theme .chat-send-btn:hover {
  background-color: var(--blue-hover);
  box-shadow: 0 0 12px rgba(93, 160, 255, 0.4);
}

body.dark-theme .product-image-container {
  background-color: hsl(220, 20%, 11%) !important;
}

body.dark-theme .input-field::placeholder {
  color: var(--text-muted);
}

body.dark-theme .chat-ai-suggestion {
  background: linear-gradient(135deg, hsl(220, 20%, 16%) 0%, hsl(220, 20%, 12%) 100%);
  border-color: var(--border-color);
}

body.dark-theme .chat-item-avatar {
  background-color: var(--blue-primary);
}

body.dark-theme .chat-list-item.active-chat {
  background-color: rgba(0, 70, 148, 0.15);
}

body.dark-theme .message-bubble.received {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

body.dark-theme .overlay {
  background-color: rgba(0, 0, 0, 0.65);
}

/* Botón Alternar Tema */
.theme-toggle-btn {
  background: none;
  border: 2px solid var(--border-color);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-main);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}
.theme-toggle-btn:hover {
  background-color: var(--bg-primary);
  border-color: var(--blue-primary);
  color: var(--blue-primary);
}

/* Estadísticas de Inicio (Diseño Compacto Vertical 3 Columnas) */
.home-stats-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
  width: 100%;
}
.home-stat-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  text-align: center;
}
.home-stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.home-stat-card .stat-icon {
  background-color: var(--blue-light);
  color: var(--blue-primary);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
body.dark-theme .home-stat-card .stat-icon {
  background-color: rgba(0, 70, 148, 0.2);
  color: #5da0ff;
}
.home-stat-card.green-card .stat-icon {
  background-color: var(--green-light);
  color: var(--green-sustainability);
}
body.dark-theme .home-stat-card.green-card .stat-icon {
  background-color: rgba(40, 167, 69, 0.2);
  color: #4cd964;
}
.home-stat-card .stat-info h4 {
  font-family: var(--font-title);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.1;
}
.home-stat-card .stat-info p {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 700;
  margin-top: 2px;
  letter-spacing: 0.5px;
}

/* Ocultar botón de colapso en móviles por defecto */
.sidebar-collapse-toggle {
  display: none;
}

/* Estilos de Contenedor Dividido de Perfil (Móvil y Escritorio) */
.profile-split-layout {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
}

/* Evitar superposición de badge TRUEQUE en swaps */
.swap-card .product-badge {
  position: static !important;
  margin: 0 !important;
}

/* En computadoras y pantallas grandes, usar pantalla completa y mostrar barra de navegación superior */
@media (min-width: 1024px) {
  #tablet-wrapper {
    width: 100% !important;
    height: 100% !important;
    border-radius: 0;
    box-shadow: none;
    border: none;
  }
  
  .desktop-nav {
    display: flex !important;
  }
  
  .bottom-nav {
    display: none !important;
  }
  
  .app-content {
    padding: 30px;
    padding-bottom: 30px;
  }
  
  .products-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .mobile-only {
    display: none !important;
  }
  .desktop-only {
    display: block !important;
  }
  
  /* Layout con barra lateral */
  #app-screen {
    display: flex !important;
    flex-direction: row !important;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
  }
  
  .desktop-sidebar {
    display: flex;
    flex-direction: column;
    width: 270px;
    height: 100vh;
    background-color: var(--bg-card);
    border-right: 1px solid var(--border-color);
    padding: 24px;
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: visible !important; /* Permitir que el botón de colapso sobresalga completo */
    transition: width var(--transition-normal), padding var(--transition-normal);
    z-index: 110 !important;
  }
  
  /* Botón de colapso de la barra lateral izquierda */
  .sidebar-collapse-toggle {
    display: flex;
    position: absolute;
    top: 32px;
    right: -14px;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--blue-primary);
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    z-index: 100;
    transition: transform var(--transition-normal), background-color var(--transition-fast), color var(--transition-fast);
  }
  .sidebar-collapse-toggle:hover {
    background-color: var(--blue-primary);
    color: white;
  }
  
  /* Estado contraído de la barra lateral (PC) */
  .desktop-sidebar.collapsed {
    width: 80px;
    padding: 24px 12px;
  }
  .desktop-sidebar.collapsed .sidebar-collapse-toggle {
    transform: rotate(180deg);
  }
  .desktop-sidebar.collapsed .sidebar-brand-text {
    display: none;
  }
  .desktop-sidebar.collapsed .sidebar-brand {
    justify-content: center;
    margin-bottom: 24px;
  }
  .desktop-sidebar.collapsed .sidebar-logo {
    margin-right: 0;
  }
  .desktop-sidebar.collapsed .sidebar-nav .nav-item span {
    display: none;
  }
  .desktop-sidebar.collapsed .sidebar-nav .nav-item {
    justify-content: center;
    padding: 12px;
    width: 100%;
  }
  .desktop-sidebar.collapsed .sidebar-nav .nav-item i {
    font-size: 1.15rem; /* Proporción mejorada de iconos en colapso */
    width: auto;
  }
  .desktop-sidebar.collapsed .sidebar-footer .green-points-badge span {
    display: none;
  }
  .desktop-sidebar.collapsed .sidebar-footer .green-points-badge {
    padding: 10px;
    justify-content: center;
    border: none;
    background: none;
  }
  .desktop-sidebar.collapsed .sidebar-footer .green-points-badge i {
    font-size: 1.25rem;
  }
  
  .sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
  }
  
  .sidebar-logo {
    height: 44px;
    width: 44px;
    object-fit: contain;
    border-radius: var(--radius-sm);
  }
  
  .sidebar-brand-text {
    display: flex;
    flex-direction: column;
    white-space: nowrap;
    overflow: hidden;
  }
  
  .brand-name {
    font-family: var(--font-title);
    font-size: 1.3rem;
    font-weight: 850;
    color: var(--blue-primary);
    line-height: 1.1;
  }
  body.dark-theme .brand-name {
    color: #5da0ff;
  }
  
  .brand-tag {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-top: 2px;
  }
  
  .sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
  }
  
  .sidebar-nav .nav-item {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 16px;
    width: 100%;
    height: auto;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 600;
    background: none;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast);
  }
  
  .sidebar-nav .nav-item i {
    font-size: 1.2rem;
    width: 20px;
    text-align: center;
    margin-bottom: 0;
    transition: none;
  }
  
  .sidebar-nav .nav-item.active {
    background-color: var(--blue-light);
    color: var(--blue-primary);
    font-weight: 700;
  }
  body.dark-theme .sidebar-nav .nav-item.active {
    background-color: rgba(0, 70, 148, 0.25);
    color: #5da0ff;
  }
  
  .sidebar-nav .nav-item.active i {
    transform: none;
  }
  
  .sidebar-nav .nav-item.active::after {
    display: none;
  }
  
  .sidebar-nav .nav-item:hover:not(.active) {
    background-color: var(--bg-primary);
    color: var(--blue-primary);
  }
  body.dark-theme .sidebar-nav .nav-item:hover:not(.active) {
    background-color: rgba(255, 255, 255, 0.05);
    color: #5da0ff;
  }
  
  .sidebar-footer {
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
  }
  
  .sidebar-footer .green-points-badge {
    width: 100%;
    justify-content: center;
    padding: 12px;
    font-size: 0.95rem;
  }
  
  .app-main-layout {
    flex: 1;
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }
  
  }
  
  /* Chat en Panel Dividido (Split-Pane) en Tablet y PC */
  @media (min-width: 768px) {
    .chats-split-container {
      display: flex;
      flex-direction: row;
      height: calc(100vh - 70px - 60px);
      background-color: var(--bg-card);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }
    
    .chats-list-panel {
      width: 350px;
      border-right: 1px solid var(--border-color);
      flex-shrink: 0;
      display: flex;
      flex-direction: column;
      height: 100%;
      background-color: var(--bg-card);
    }
    
    .chats-list-scroll {
      flex: 1;
      overflow-y: auto;
    }
    
    .chats-conversation-panel {
      flex: 1;
      position: relative;
      height: 100%;
      background-color: var(--bg-primary);
      display: flex;
      flex-direction: column;
    }
    
    .chat-placeholder {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      height: 100%;
      padding: 40px;
      text-align: center;
      color: var(--text-muted);
    }
    
    .chat-placeholder i {
      font-size: 4.5rem;
      color: var(--blue-muted);
      margin-bottom: 20px;
      opacity: 0.4;
    }
    
    .chat-placeholder h3 {
      font-family: var(--font-title);
      font-size: 1.4rem;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    
    .chat-placeholder p {
      font-size: 0.95rem;
      max-width: 440px;
      line-height: 1.5;
    }
    
    /* Anular las transiciones absolutas de pantalla completa de móvil */
    .chat-conversation-wrapper {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      transform: none !important;
      transition: none !important;
      display: none;
      flex-direction: column;
      z-index: 10;
    }
    
    .chat-conversation-wrapper.active {
      display: flex !important;
      transform: none !important;
    }
    
    /* Ocultar el placeholder cuando hay conversación activa */
    .chats-conversation-panel:has(.chat-conversation-wrapper.active) .chat-placeholder {
      display: none !important;
    }
  }
  
  @media (min-width: 1024px) {

  /* Layout Dividido para Perfil en PC (Lado a Lado) */
  .profile-split-layout {
    flex-direction: row !important;
    align-items: flex-start !important;
    gap: 24px !important;
  }
  
  .profile-split-layout .profile-card {
    flex: 1 !important;
    margin-bottom: 0 !important;
  }
  
  .profile-split-layout .edit-profile-box {
    flex: 1.5 !important;
    margin-top: 0 !important;
  }
}

/* ==========================================================================
   MEJORAS RESPONSIVAS ADICIONALES (MÓVIL / TELÉFONOS)
   ========================================================================== */
@media (max-width: 767px) {
  /* 1. Cabecera y Buscador */
  .header-brand .header-title-container {
    display: none !important; /* Solo se ve el logo en telefono */
  }

  /* Botón de IA en el buscador: solo icono sin texto en telefono */
  #btn-ai-search span {
    display: none !important;
  }
  
  #btn-ai-search {
    padding: 10px 12px !important;
  }

  /* 2. Tarjetas de Trueque (Swaps) en Móvil */
  .swap-item-flow {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 8px !important;
    padding: 12px !important;
  }

  .swap-arrow-icon {
    align-self: center !important;
    transform: rotate(90deg) !important; /* Rotar flecha hacia abajo */
    margin: 4px 0 !important;
  }

  .swap-propose-btn {
    width: 100% !important;
    padding: 10px !important;
    font-size: 0.85rem !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 8px !important;
  }

  .swap-propose-btn .btn-text {
    display: none !important; /* Quitar texto largo */
  }

  .swap-propose-btn::after {
    content: " Proponer" !important; /* Texto responsivo corto */
  }

  /* 3. Tarjetas de Tutores en Móvil */
  .tutor-card {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 12px !important;
  }

  .tutor-avatar {
    align-self: center !important; /* Centrar avatar */
  }

  .tutor-details {
    width: 100% !important;
  }

  .tutor-subjects {
    width: 100% !important;
    margin-bottom: 12px !important;
  }

  .tutor-subjects .subject-badge {
    flex: 1 1 auto !important;
    text-align: center !important;
  }

  .tutor-footer {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 10px !important;
    width: 100% !important;
  }

  .tutor-cost {
    text-align: center !important;
    width: 100% !important;
    font-size: 1rem !important;
  }

  .tutor-contact-btn {
    width: 100% !important;
    padding: 10px !important;
    font-size: 0.9rem !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 8px !important;
  }

  /* 4. Transición de Chat en Móvil (Lista -> Conversación) */
  .chats-split-container {
    position: relative !important;
    width: 100% !important;
    height: calc(100vh - 70px - 100px) !important; /* Altura ajustada para no solapar con la barra flotante */
    overflow: hidden !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
  }

  .chats-list-panel {
    width: 100% !important;
    height: 100% !important;
    transition: transform var(--transition-normal) !important;
  }

  .chats-conversation-panel {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    background-color: var(--bg-primary) !important;
    transform: translateX(100%) !important;
    transition: transform var(--transition-normal) !important;
    z-index: 10 !important;
  }

  /* Deslizar paneles al activar conversación */
  .chats-split-container.show-conversation .chats-list-panel {
    transform: translateX(-100%) !important;
  }

  .chats-split-container.show-conversation .chats-conversation-panel {
    transform: translateX(0) !important;
  }

  /* Ocultar el placeholder en móvil */
  .chats-conversation-panel .chat-placeholder {
    display: none !important;
  }

  /* Adaptación de la ventana activa en móvil */
  .chat-conversation-wrapper {
    position: relative !important;
    transform: none !important;
    transition: none !important;
    display: none !important;
    height: 100% !important;
    width: 100% !important;
  }

  .chat-conversation-wrapper.active {
    display: flex !important;
  }

  /* 5. Barra Inferior Flotante y Redondeada */
  .bottom-nav {
    bottom: 16px !important;
    left: 16px !important;
    right: 16px !important;
    width: calc(100% - 32px) !important;
    border-radius: var(--radius-lg) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: var(--shadow-lg) !important;
    height: 65px !important;
    background-color: var(--glass-bg) !important;
    backdrop-filter: var(--glass-blur) !important;
  }

  .app-content {
    padding-bottom: 100px !important;
  }

  /* Vista de Chat sin bordes y a pantalla completa en móvil */
  .tab-chats-active .app-content {
    padding: 0 !important;
    overflow: hidden !important;
  }

  /* Ocultar barra de navegación inferior cuando hay una conversación activa en móvil */
  .tab-chats-active:has(.chats-split-container.show-conversation) .bottom-nav {
    display: none !important;
  }
  
  /* Hacer que el contenedor de chats ocupe todo el alto disponible sin la barra de navegación */
  .tab-chats-active:has(.chats-split-container.show-conversation) .chats-split-container {
    height: calc(100vh - 70px) !important;
  }

  /* 6. Envoltura de texto en trueques para evitar desbordes */
  .swap-flow-col {
    width: 100% !important;
    min-width: 0 !important;
  }

  .swap-flow-value {
    white-space: normal !important;
    word-break: break-word !important;
  }
}

/* ==========================================================================
   LANDING PAGE Y LOGIN LIMPIO (FORZADO SIEMPRE MODO CLARO)
   ========================================================================== */
#login-screen {
  overflow-y: auto !important;
  overflow-x: hidden !important;
}

.landing-page-container,
.clean-login-container {
  /* Forzar siempre tema claro en las variables de color */
  --bg-primary: hsl(220, 20%, 97%) !important;
  --bg-card: hsl(0, 0%, 100%) !important;
  --border-color: hsl(220, 15%, 90%) !important;
  --text-main: hsl(220, 25%, 15%) !important;
  --text-muted: hsl(220, 15%, 50%) !important;
  
  width: 100% !important;
  min-height: 100vh !important;
  background-color: var(--bg-primary) !important;
  color: var(--text-main) !important;
  font-family: var(--font-body) !important;
}

/* Restablecer color de fondo de login-screen a claro */
body.dark-theme #login-screen,
#login-screen {
  background-color: hsl(220, 20%, 97%) !important;
}

.landing-page-container {
  display: flex;
  flex-direction: column;
}

/* Navbar de la Landing */
.landing-navbar {
  height: 75px !important;
  background-color: var(--bg-card) !important;
  border-bottom: 1px solid var(--border-color) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  padding: 0 40px !important;
  box-shadow: var(--shadow-sm) !important;
  flex-shrink: 0 !important;
  position: sticky !important;
  top: 0 !important;
  z-index: 1000 !important;
}

.landing-nav-brand {
  display: flex !important;
  align-items: center !important;
  gap: 12px !important;
}

.landing-nav-logo {
  height: 44px !important;
  width: 44px !important;
  object-fit: contain !important;
  border-radius: var(--radius-sm) !important;
}

.landing-nav-title {
  font-family: var(--font-title) !important;
  font-weight: 850 !important;
  font-size: 1.4rem !important;
  color: var(--blue-primary) !important;
}

.landing-nav-menu {
  display: flex !important;
  gap: 24px !important;
  align-items: center !important;
}

.landing-nav-link {
  text-decoration: none !important;
  color: var(--text-muted) !important;
  font-family: var(--font-title) !important;
  font-weight: 600 !important;
  font-size: 0.95rem !important;
  transition: color var(--transition-fast) !important;
  cursor: pointer !important;
}

.landing-nav-link:hover {
  color: var(--blue-primary) !important;
}

.landing-nav-actions {
  display: flex !important;
  align-items: center !important;
  gap: 12px !important;
}

.landing-login-btn-outline {
  background: none !important;
  border: 1.5px solid var(--blue-primary) !important;
  color: var(--blue-primary) !important;
  padding: 10px 20px !important;
  border-radius: var(--radius-md) !important;
  font-family: var(--font-title) !important;
  font-weight: 700 !important;
  font-size: 0.9rem !important;
  cursor: pointer !important;
  transition: all var(--transition-fast) !important;
}

.landing-login-btn-outline:hover {
  background-color: var(--blue-light) !important;
}

.landing-login-btn {
  background-color: var(--red-primary) !important;
  color: white !important;
  border: none !important;
  padding: 10px 20px !important;
  border-radius: var(--radius-md) !important;
  font-family: var(--font-title) !important;
  font-weight: 700 !important;
  font-size: 0.9rem !important;
  cursor: pointer !important;
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
  transition: background-color var(--transition-fast) !important;
  box-shadow: 0 4px 12px rgba(227, 26, 34, 0.15) !important;
}

.landing-login-btn:hover {
  background-color: var(--red-hover) !important;
}

/* Scroll del contenido */
.landing-content-scroll {
  flex: 1 !important;
  overflow-y: auto !important;
  scroll-behavior: smooth !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
}

/* SECCIÓN HERO */
.landing-hero-section {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 48px !important;
  width: 100% !important;
  max-width: 1440px !important;
  padding: 60px 40px !important;
}

.hero-text-col {
  flex: 1.2 !important;
  display: flex !important;
  flex-direction: column !important;
}

.landing-title-main {
  font-family: var(--font-title) !important;
  font-size: 3.2rem !important;
  font-weight: 900 !important;
  line-height: 1.15 !important;
  color: var(--text-main) !important;
  margin-bottom: 20px !important;
}

.highlight-blue {
  color: var(--blue-primary) !important;
}

.highlight-red {
  color: var(--red-primary) !important;
}

.landing-subtitle-main {
  font-size: 1.15rem !important;
  color: var(--text-muted) !important;
  line-height: 1.55 !important;
  margin-bottom: 32px !important;
  max-width: 540px !important;
}

.hero-actions-row {
  display: flex !important;
  gap: 16px !important;
  margin-bottom: 36px !important;
}

.hero-btn-red {
  background-color: var(--red-primary) !important;
  color: white !important;
  padding: 14px 28px !important;
  border-radius: 12px !important;
  font-family: var(--font-title) !important;
  font-weight: 700 !important;
  font-size: 1rem !important;
  cursor: pointer !important;
  display: flex !important;
  align-items: center !important;
  gap: 10px !important;
  border: none !important;
  box-shadow: 0 4px 16px rgba(227, 26, 34, 0.2) !important;
  transition: all var(--transition-fast) !important;
}

.hero-btn-red:hover {
  background-color: #b51a22 !important;
  transform: translateY(-2px) !important;
}

.hero-btn-outline {
  background-color: #f7fafc !important;
  border: 1.5px solid var(--blue-primary) !important;
  color: var(--blue-primary) !important;
  padding: 14px 28px !important;
  border-radius: 12px !important;
  font-family: var(--font-title) !important;
  font-weight: 700 !important;
  font-size: 1rem !important;
  cursor: pointer !important;
  display: flex !important;
  align-items: center !important;
  gap: 10px !important;
  transition: all var(--transition-fast) !important;
}

.hero-btn-outline:hover {
  background-color: #edf2f7 !important;
  transform: translateY(-2px) !important;
}

.hero-badges-row {
  display: flex !important;
  gap: 20px !important;
  flex-wrap: wrap !important;
}

.hero-badge-item {
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
  font-size: 0.85rem !important;
  color: var(--text-muted) !important;
  font-weight: 600 !important;
}

.hero-badge-item i {
  color: var(--green-sustainability) !important;
  font-size: 1rem !important;
}

.hero-image-col {
  flex: 0.8 !important;
  display: flex !important;
  justify-content: center !important;
}

.hero-image-card-wrapper {
  background: white !important;
  padding: 16px !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-lg) !important;
  border: 1px solid var(--border-color) !important;
}

.hero-main-img {
  width: 100% !important;
  max-width: 380px !important;
  height: auto !important;
  border-radius: var(--radius-md) !important;
  display: block !important;
  object-fit: cover !important;
}

/* SECCIÓN CATEGORÍAS */
.landing-categories-section {
  width: 100% !important;
  max-width: 1440px !important;
  padding: 60px 40px !important;
  text-align: center !important;
}

.landing-section-heading {
  font-family: var(--font-title) !important;
  font-size: 2rem !important;
  font-weight: 900 !important;
  color: var(--text-main) !important;
  margin-bottom: 40px !important;
}

.title-underline-blue,
.title-underline-red {
  position: relative !important;
}

.title-underline-blue::after {
  content: "" !important;
  position: absolute !important;
  bottom: -4px !important;
  left: 0 !important;
  width: 100% !important;
  height: 4px !important;
  background-color: var(--blue-primary) !important;
  border-radius: var(--radius-full) !important;
}

.title-underline-red::after {
  content: "" !important;
  position: absolute !important;
  bottom: -4px !important;
  left: 0 !important;
  width: 100% !important;
  height: 4px !important;
  background-color: var(--red-primary) !important;
  border-radius: var(--radius-full) !important;
}

.categories-grid-row {
  display: grid !important;
  grid-template-columns: repeat(8, 1fr) !important;
  gap: 16px !important;
}

.cat-card-item {
  background: white !important;
  border: 1.5px solid var(--border-color) !important;
  border-radius: var(--radius-md) !important;
  padding: 20px 10px !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  cursor: pointer !important;
  transition: all var(--transition-fast) !important;
  box-shadow: var(--shadow-sm) !important;
}

.cat-card-item:hover {
  transform: translateY(-4px) !important;
  border-color: var(--blue-primary) !important;
  box-shadow: var(--shadow-md) !important;
}

.cat-card-icon {
  width: auto !important;
  height: 55px !important;
  background-color: transparent !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  font-size: 2.6rem !important;
  margin-bottom: 16px !important;
}

.cat-icon-red i {
  color: var(--red-primary) !important;
}

.cat-icon-blue i {
  color: var(--blue-primary) !important;
}

.cat-card-name {
  font-family: var(--font-title) !important;
  font-weight: 750 !important;
  font-size: 0.85rem !important;
  color: var(--text-main) !important;
}



/* SECCIÓN CÓMO FUNCIONA */
.landing-how-section {
  width: 100% !important;
  max-width: 1440px !important;
  padding: 60px 40px !important;
  text-align: center !important;
  border-top: 1px solid var(--border-color) !important;
  border-bottom: 1px solid var(--border-color) !important;
}

.how-steps-row {
  display: flex !important;
  justify-content: space-around !important;
  gap: 32px !important;
}

.how-step-col {
  flex: 1 !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
}

.how-step-num-icon {
  width: 72px !important;
  height: 72px !important;
  border-radius: var(--radius-full) !important;
  background-color: var(--blue-light) !important;
  color: var(--blue-primary) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  font-size: 1.8rem !important;
  position: relative !important;
  margin-bottom: 20px !important;
  border: 1px solid rgba(0, 70, 148, 0.1) !important;
}

.step-number {
  position: absolute !important;
  top: -2px !important;
  right: -2px !important;
  width: 26px !important;
  height: 26px !important;
  border-radius: var(--radius-full) !important;
  background-color: var(--red-primary) !important;
  color: white !important;
  font-family: var(--font-title) !important;
  font-weight: 800 !important;
  font-size: 0.85rem !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  box-shadow: var(--shadow-sm) !important;
  border: 2px solid white !important;
}

.how-step-col h4 {
  font-family: var(--font-title) !important;
  font-size: 1.15rem !important;
  font-weight: 800 !important;
  color: var(--text-main) !important;
  margin-bottom: 8px !important;
}

.how-step-col p {
  font-size: 0.9rem !important;
  color: var(--text-muted) !important;
  line-height: 1.5 !important;
  max-width: 280px !important;
}

/* SECCIÓN BENEFICIOS Y TESTIMONIOS */
.landing-benefits-section {
  width: 100% !important;
  max-width: 1440px !important;
  padding: 60px 40px !important;
}

.benefits-columns-row {
  display: flex !important;
  gap: 64px !important;
}

.benefits-text-col {
  flex: 1.1 !important;
}

.benefits-list {
  list-style: none !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 24px !important;
}

.benefits-list li {
  display: flex !important;
  gap: 16px !important;
  align-items: flex-start !important;
}

.benefit-check-icon {
  width: 44px !important;
  height: 44px !important;
  border-radius: var(--radius-sm) !important;
  background-color: var(--blue-light) !important;
  color: var(--blue-primary) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  font-size: 1.25rem !important;
  flex-shrink: 0 !important;
}

.benefits-list li:nth-child(even) .benefit-check-icon {
  background-color: var(--red-light) !important;
  color: var(--red-primary) !important;
}

.benefit-desc strong {
  font-family: var(--font-title) !important;
  font-size: 1.05rem !important;
  font-weight: 750 !important;
  color: var(--text-main) !important;
  display: block !important;
  margin-bottom: 4px !important;
}

.benefit-desc p {
  font-size: 0.85rem !important;
  color: var(--text-muted) !important;
}

.testimonials-cards-col {
  flex: 0.9 !important;
}

.testimonials-stack {
  display: flex !important;
  flex-direction: column !important;
  gap: 20px !important;
}

.testimonial-card {
  background: white !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--radius-md) !important;
  padding: 20px !important;
  box-shadow: var(--shadow-sm) !important;
}

.quote-text {
  font-style: italic !important;
  font-size: 0.92rem !important;
  color: var(--text-main) !important;
  line-height: 1.5 !important;
  margin-bottom: 16px !important;
}

.quote-text i {
  color: var(--blue-primary) !important;
  opacity: 0.3 !important;
}

.student-profile-row {
  display: flex !important;
  align-items: center !important;
  gap: 12px !important;
}

.student-avatar-char {
  width: 40px !important;
  height: 40px !important;
  border-radius: var(--radius-full) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  font-family: var(--font-title) !important;
  font-weight: 700 !important;
  font-size: 0.9rem !important;
}

.student-info-meta {
  display: flex !important;
  flex-direction: column !important;
}

.student-info-meta strong {
  font-size: 0.9rem !important;
  color: var(--text-main) !important;
}

.student-info-meta span {
  font-size: 0.75rem !important;
  color: var(--text-muted) !important;
}

/* SECCIÓN CTA BANNER */
.landing-cta-banner {
  width: calc(100% - 80px) !important;
  max-width: 1440px !important;
  background: linear-gradient(135deg, var(--red-primary) 0%, var(--blue-primary) 100%) !important;
  padding: 48px 30px !important;
  border-radius: var(--radius-lg) !important;
  margin-bottom: 60px !important;
  box-shadow: var(--shadow-lg) !important;
  text-align: center !important;
}

.cta-banner-content h3 {
  font-family: var(--font-title) !important;
  font-weight: 400 !important;
  font-size: 1.8rem !important;
  color: white !important;
  line-height: 1.3 !important;
  margin-bottom: 28px !important;
}

.cta-banner-content strong {
  font-weight: 900 !important;
}

.cta-button-white {
  background-color: white !important;
  color: var(--blue-primary) !important;
  border: none !important;
  padding: 14px 32px !important;
  border-radius: var(--radius-md) !important;
  font-family: var(--font-title) !important;
  font-weight: 700 !important;
  font-size: 1rem !important;
  cursor: pointer !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 10px !important;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15) !important;
  transition: all var(--transition-fast) !important;
}

.cta-button-white:hover {
  transform: translateY(-2px) !important;
  color: var(--red-primary) !important;
}

/* SECCIÓN FOOTER DE LA LANDING */
.landing-page-footer-full {
  width: 100% !important;
  background-color: #0b1f3f !important;
  border-top: 5px solid #d9383a !important;
  padding: 60px 40px 24px 40px !important;
  display: flex !important;
  flex-direction: column !important;
  color: #ffffff !important;
}

.footer-grid-row {
  display: grid !important;
  grid-template-columns: 1.2fr 0.8fr 1fr 1fr !important;
  gap: 40px !important;
  max-width: 1440px !important;
  width: 100% !important;
  margin: 0 auto 40px auto !important;
}

.footer-logo-row {
  display: flex !important;
  align-items: center !important;
  gap: 12px !important;
  margin-bottom: 16px !important;
}

.footer-logo-img {
  height: 38px !important;
  width: 38px !important;
  object-fit: contain !important;
  border-radius: var(--radius-sm) !important;
}

.footer-logo-row h4 {
  font-family: var(--font-title) !important;
  font-weight: 850 !important;
  font-size: 1.45rem !important;
  color: #ffffff !important;
}

.footer-brand-slogan {
  font-family: var(--font-title) !important;
  font-weight: 750 !important;
  font-size: 0.95rem !important;
  color: #ffffff !important;
  margin-top: 8px !important;
  margin-bottom: 6px !important;
}

.footer-brand-desc {
  font-size: 0.85rem !important;
  color: rgba(255, 255, 255, 0.7) !important;
  line-height: 1.5 !important;
}

.footer-grid-row h5 {
  font-family: var(--font-title) !important;
  font-size: 1.05rem !important;
  font-weight: 800 !important;
  color: #ffffff !important;
  margin-bottom: 20px !important;
}

.footer-col-links {
  display: flex !important;
  flex-direction: column !important;
  gap: 12px !important;
}

.footer-col-links a {
  text-decoration: none !important;
  color: rgba(255, 255, 255, 0.7) !important;
  font-size: 0.9rem !important;
  transition: color var(--transition-fast) !important;
}

.footer-col-links a:hover {
  color: #ffffff !important;
}

.footer-col-contact {
  display: flex !important;
  flex-direction: column !important;
  gap: 14px !important;
}

.footer-contact-link {
  display: flex !important;
  align-items: center !important;
  gap: 12px !important;
  text-decoration: none !important;
  color: rgba(255, 255, 255, 0.7) !important;
  font-size: 0.9rem !important;
  transition: color var(--transition-fast) !important;
}

.footer-contact-link:hover {
  color: #ffffff !important;
}

.contact-icon-wrapper {
  width: 32px !important;
  height: 32px !important;
  border-radius: 6px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  color: #ffffff !important;
  font-size: 1.05rem !important;
}

.insta-bg {
  background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%) !important;
}

.mail-bg {
  background: #3182ce !important;
}

.app-store-buttons {
  display: flex !important;
  flex-direction: column !important;
  gap: 12px !important;
  max-width: 180px !important;
}

.store-badge-btn {
  background-color: #000000 !important;
  color: #ffffff !important;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
  border-radius: 8px !important;
  padding: 6px 14px !important;
  display: flex !important;
  align-items: center !important;
  gap: 10px !important;
  text-decoration: none !important;
  transition: border-color var(--transition-fast) !important;
}

.store-badge-btn:hover {
  border-color: rgba(255, 255, 255, 0.6) !important;
}

.store-icon {
  font-size: 1.5rem !important;
}

.store-text-col {
  display: flex !important;
  flex-direction: column !important;
  text-align: left !important;
}

.store-subtext {
  font-size: 0.6rem !important;
  color: rgba(255, 255, 255, 0.5) !important;
  text-transform: uppercase !important;
  letter-spacing: 0.3px !important;
  line-height: 1.2 !important;
}

.store-maintext {
  font-size: 0.85rem !important;
  font-weight: 700 !important;
  line-height: 1.2 !important;
}

.footer-copyright-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.1) !important;
  padding-top: 20px !important;
  text-align: center !important;
  font-size: 0.8rem !important;
  color: rgba(255, 255, 255, 0.5) !important;
}

/* Contenedor del Login Limpio */
.clean-login-container {
  display: flex !important;
  justify-content: center !important;
  align-items: center !important;
  padding: 24px !important;
  background: linear-gradient(135deg, #f5f7fa 0%, #e9edf5 100%) !important;
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  height: 100% !important;
  overflow-x: hidden !important;
  overflow-y: auto !important;
}

/* Esferas de brillo de fondo para efecto Aurora moderno */
.clean-login-container::before {
  content: "" !important;
  position: absolute !important;
  top: -10% !important;
  left: -10% !important;
  width: 45% !important;
  height: 45% !important;
  background: radial-gradient(circle, rgba(0, 70, 148, 0.08) 0%, rgba(0, 70, 148, 0) 70%) !important;
  border-radius: 50% !important;
  pointer-events: none !important;
  z-index: 0 !important;
}

.clean-login-container::after {
  content: "" !important;
  position: absolute !important;
  bottom: -10% !important;
  right: -10% !important;
  width: 45% !important;
  height: 45% !important;
  background: radial-gradient(circle, rgba(227, 26, 34, 0.06) 0%, rgba(227, 26, 34, 0) 70%) !important;
  border-radius: 50% !important;
  pointer-events: none !important;
  z-index: 0 !important;
}

.login-card-wrapper {
  background: rgba(255, 255, 255, 0.94) !important;
  backdrop-filter: blur(16px) !important;
  -webkit-backdrop-filter: blur(16px) !important;
  border: 1px solid rgba(255, 255, 255, 0.8) !important;
  border-radius: 24px !important;
  padding: 40px !important;
  width: 100% !important;
  max-width: 460px !important;
  box-shadow: 0 20px 40px rgba(13, 39, 76, 0.05) !important;
  display: flex !important;
  flex-direction: column !important;
  color: var(--text-main) !important;
  z-index: 1 !important;
  position: relative !important;
  transition: padding 0.3s ease, border-radius 0.3s ease !important;
}

.login-back-btn {
  align-self: flex-start !important;
  background: #ffffff !important;
  border: 1px solid #e2e8f0 !important;
  color: var(--blue-primary) !important;
  font-family: var(--font-title) !important;
  font-weight: 700 !important;
  font-size: 0.85rem !important;
  cursor: pointer !important;
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
  margin-bottom: 24px !important;
  padding: 8px 16px !important;
  border-radius: 20px !important;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02) !important;
  transition: all var(--transition-fast) !important;
}

.login-back-btn:hover {
  background-color: var(--blue-light) !important;
  border-color: var(--blue-primary) !important;
  transform: translateX(-3px) !important;
}

#login-screen .demo-box {
  background: linear-gradient(135deg, rgba(40, 167, 69, 0.06) 0%, rgba(40, 167, 69, 0.01) 100%) !important;
  border: 1.5px solid rgba(40, 167, 69, 0.25) !important;
  border-radius: 16px !important;
  padding: 20px !important;
  margin-bottom: 20px !important;
  box-shadow: 0 4px 12px rgba(40, 167, 69, 0.01) !important;
  position: relative !important;
  text-align: left !important;
}

#login-screen .demo-box h4 {
  font-family: var(--font-title) !important;
  color: #1b5e20 !important;
  font-size: 0.95rem !important;
  font-weight: 800 !important;
  margin-top: 8px !important;
  margin-bottom: 4px !important;
}

#login-screen .demo-box p {
  font-size: 0.82rem !important;
  color: #2e7d32 !important;
  margin-bottom: 14px !important;
  line-height: 1.45 !important;
}

.demo-badge-tip {
  background-color: #28a745 !important;
  color: #ffffff !important;
  font-size: 0.65rem !important;
  padding: 4px 10px !important;
  border-radius: 20px !important;
  font-weight: 800 !important;
  letter-spacing: 0.8px !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 4px !important;
  box-shadow: 0 2px 6px rgba(40, 167, 69, 0.15) !important;
}

.demo-login-btn {
  background: linear-gradient(135deg, #28a745 0%, #218838 100%) !important;
  border: none !important;
  border-radius: 12px !important;
  padding: 12px 20px !important;
  font-size: 0.9rem !important;
  font-weight: 700 !important;
  color: #ffffff !important;
  width: 100% !important;
  box-shadow: 0 4px 12px rgba(40, 167, 69, 0.2) !important;
  transition: all var(--transition-fast) !important;
  cursor: pointer !important;
}

.demo-login-btn:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 16px rgba(40, 167, 69, 0.3) !important;
}

#login-screen .divider-text {
  color: var(--text-muted) !important;
  font-size: 0.72rem !important;
  font-weight: 700 !important;
  letter-spacing: 1.5px !important;
  margin: 24px 0 !important;
}

#login-screen .divider-text::before,
#login-screen .divider-text::after {
  background-color: #cbd5e0 !important;
  width: 28% !important;
}

#login-screen .input-group label {
  font-family: var(--font-title) !important;
  font-size: 0.82rem !important;
  font-weight: 700 !important;
  color: #0d274c !important;
  margin-bottom: 8px !important;
  display: block !important;
  text-align: left !important;
}

#login-screen .input-field {
  background-color: #ffffff !important;
  border: 1.5px solid #cbd5e0 !important;
  color: var(--text-main) !important;
  border-radius: 12px !important;
  height: 48px !important;
  font-size: 0.95rem !important;
  transition: all var(--transition-fast) !important;
}

#login-screen .input-field:focus {
  border-color: var(--blue-primary) !important;
  box-shadow: 0 0 0 4px rgba(0, 70, 148, 0.1) !important;
}

#login-screen .input-field::placeholder {
  color: #a0aec0 !important;
}

#login-screen .error-message {
  background-color: #fff5f5 !important;
  border-left: 4px solid #e53e3e !important;
  padding: 8px 12px !important;
  color: #c53030 !important;
  font-size: 0.78rem !important;
  font-weight: 600 !important;
  margin-top: 8px !important;
  border-radius: 4px !important;
  text-align: left !important;
}

#login-screen .button-secondary {
  background: linear-gradient(135deg, var(--red-primary) 0%, var(--red-hover) 100%) !important;
  height: 48px !important;
  border: none !important;
  border-radius: 12px !important;
  font-family: var(--font-title) !important;
  font-weight: 700 !important;
  font-size: 0.95rem !important;
  color: #ffffff !important;
  box-shadow: 0 4px 12px rgba(227, 26, 34, 0.2) !important;
  transition: all var(--transition-fast) !important;
  margin-top: 16px !important;
  width: 100% !important;
  cursor: pointer !important;
}

#login-screen .button-secondary:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 16px rgba(227, 26, 34, 0.3) !important;
}

#login-screen .landing-footer {
  margin-top: 32px !important;
  font-size: 0.75rem !important;
  color: var(--text-muted) !important;
  font-weight: 600 !important;
  letter-spacing: 0.5px !important;
}

/* Responsividad móvil para la tarjeta de login */
@media (max-width: 480px) {
  .clean-login-container {
    padding: 16px !important;
  }
  
  .login-card-wrapper {
    padding: 24px 20px !important;
    border-radius: 20px !important;
    max-width: 100% !important;
  }
  
  .login-box-header img {
    width: 60px !important;
    height: 60px !important;
    margin-bottom: 8px !important;
  }
  
  .login-box-header h3 {
    font-size: 1.35rem !important;
  }
  
  .login-box-header p {
    font-size: 0.82rem !important;
  }
  
  #login-screen .demo-box {
    padding: 16px !important;
  }
  
  #login-screen .demo-box h4 {
    font-size: 0.9rem !important;
  }
  
  #login-screen .demo-box p {
    font-size: 0.78rem !important;
    margin-bottom: 10px !important;
  }
  
  .demo-login-btn {
    padding: 10px 16px !important;
    font-size: 0.85rem !important;
  }
}

/* COMPOSICIÓN HERO CON MOCKUP DE SMARTPHONE */
.hero-composition-wrapper {
  position: relative !important;
  width: 100% !important;
  max-width: 600px !important;
  height: 400px !important;
  margin: 0 auto !important;
}

.composition-ring {
  position: absolute !important;
  top: 50% !important;
  left: 50% !important;
  transform: translate(-50%, -50%) !important;
  width: 360px !important;
  height: 360px !important;
  border: 2px dashed rgba(13, 39, 76, 0.18) !important;
  border-radius: 50% !important;
  z-index: 0 !important;
  animation: spin 60s linear infinite !important;
}

.phone-mockup {
  position: absolute !important;
  left: 50% !important;
  top: 50% !important;
  transform: translate(-50%, -50%) !important;
  width: 170px !important;
  height: 340px !important;
  z-index: 3 !important;
}

.phone-frame {
  width: 100% !important;
  height: 100% !important;
  background-color: #000000 !important;
  border: 5px solid #1a202c !important;
  border-radius: 20px !important;
  box-shadow: 0 8px 30px rgba(0,0,0,0.15) !important;
  position: relative !important;
  overflow: hidden !important;
}

.phone-notch {
  position: absolute !important;
  top: 0 !important;
  left: 50% !important;
  transform: translateX(-50%) !important;
  width: 50px !important;
  height: 10px !important;
  background-color: #1a202c !important;
  border-bottom-left-radius: 6px !important;
  border-bottom-right-radius: 6px !important;
  z-index: 10 !important;
}

.phone-screen {
  width: 100% !important;
  height: 100% !important;
  background-color: #f7fafc !important;
  display: flex !important;
  flex-direction: column !important;
  position: relative !important;
}

.phone-header {
  padding: 18px 10px 6px 10px !important;
  display: flex !important;
  align-items: center !important;
  gap: 6px !important;
  border-bottom: 1px solid #edf2f7 !important;
  background-color: #ffffff !important;
}

.phone-logo {
  width: 16px !important;
  height: 16px !important;
  object-fit: contain !important;
  border-radius: 3px !important;
}

.phone-title {
  font-family: var(--font-title) !important;
  font-size: 0.7rem !important;
  font-weight: 850 !important;
  color: var(--blue-primary) !important;
  letter-spacing: -0.2px !important;
}

.phone-body {
  flex: 1 !important;
  padding: 10px !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 4px !important;
  overflow: hidden !important;
  background-color: #f7fafc !important;
  text-align: left !important;
}

.phone-welcome {
  font-family: var(--font-title) !important;
  font-size: 0.65rem !important;
  font-weight: 800 !important;
  color: var(--text-main) !important;
  margin-top: 4px !important;
}

.students-photo-card {
  display: none !important;
}

.floating-bubble {
  position: absolute !important;
  width: 46px !important;
  height: 46px !important;
  border-radius: var(--radius-full) !important;
  border: 2.5px solid #ffffff !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  font-size: 1.25rem !important;
  box-shadow: var(--shadow-md) !important;
  z-index: 4 !important;
  backdrop-filter: blur(4px) !important;
  transition: transform var(--transition-fast) !important;
}

.floating-bubble:hover {
  transform: scale(1.15) !important;
  z-index: 5 !important;
}

.bubble-cart {
  top: 61px !important;
  left: 139px !important;
  color: #ffffff !important;
  background-color: var(--blue-primary) !important;
  animation: float 4.5s ease-in-out infinite !important;
}

.bubble-bag {
  top: 61px !important;
  right: 139px !important;
  color: #ffffff !important;
  background-color: var(--red-primary) !important;
  animation: float-side 5s ease-in-out infinite !important;
}

.bubble-leaf {
  bottom: 87px !important;
  right: 121px !important;
  color: #ffffff !important;
  background-color: var(--green-sustainability) !important;
  animation: float 5.5s ease-in-out infinite !important;
}

.bubble-book {
  bottom: 21px !important;
  left: 187px !important;
  color: #ffffff !important;
  background-color: var(--blue-primary) !important;
  animation: float-side 4.2s ease-in-out infinite !important;
}

.bubble-chat {
  top: 177px !important;
  left: 97px !important;
  color: #ffffff !important;
  background-color: var(--red-primary) !important;
  animation: float 4.8s ease-in-out infinite !important;
}


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

@keyframes float-side {
  0%, 100% {
    transform: translateX(0) translateY(0);
  }
  50% {
    transform: translateX(3px) translateY(-4px);
  }
}

@keyframes spin {
  100% {
    transform: rotate(360deg);
  }
}

/* ==========================================
   ADAPTACIÓN RESPONSIVA DE LA NUEVA LANDING
   ========================================== */
@media (max-width: 1023px) {
  .landing-navbar {
    padding: 0 20px !important;
  }
  .landing-nav-menu {
    display: none !important; /* Ocultar menú en tablet/móvil por espacio */
  }
  .landing-hero-section {
    flex-direction: column !important;
    text-align: center !important;
    padding: 40px 20px !important;
  }
  .hero-text-col {
    align-items: center !important;
  }
  .landing-title-main {
    font-size: 2.6rem !important;
  }
  .landing-subtitle-main {
    max-width: 100% !important;
  }
  .categories-grid-row {
    grid-template-columns: repeat(4, 1fr) !important;
  }

  .how-steps-row {
    flex-direction: column !important;
    gap: 40px !important;
  }
  .benefits-columns-row {
    flex-direction: column !important;
    gap: 40px !important;
  }
  .footer-grid-row {
    grid-template-columns: 1fr 1fr !important;
  }
}

@media (max-width: 767px) {
  .categories-grid-row {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  .footer-grid-row {
    grid-template-columns: 1fr !important;
  }
  .landing-title-main {
    font-size: 2.2rem !important;
  }
  .hero-actions-row {
    flex-direction: column !important;
    width: 100% !important;
  }
  .hero-btn-red,
  .hero-btn-outline {
    width: 100% !important;
    justify-content: center !important;
  }
  .landing-login-btn-outline {
    padding: 8px 12px !important;
    font-size: 0.85rem !important;
  }
  .landing-login-btn {
    padding: 8px 12px !important;
    font-size: 0.85rem !important;
  }
}

/* Ajustes responsivos para el Login */
@media (max-width: 480px) {
  .login-card-wrapper {
    padding: 24px 20px !important;
    border: 1px solid rgba(255, 255, 255, 0.8) !important;
    box-shadow: 0 10px 30px rgba(13, 39, 76, 0.04) !important;
    background: rgba(255, 255, 255, 0.95) !important;
    border-radius: 20px !important;
  }
  .hero-composition-wrapper {
    transform: scale(0.78) !important;
    transform-origin: top center !important;
    height: 380px !important;
  }
}

.hidden {
  display: none !important;
}

/* Ajuste de altura del contenedor de chats para tablets para evitar solapamiento con la barra de navegación inferior */
@media (min-width: 768px) and (max-width: 1023px) {
  .chats-split-container {
    height: calc(100vh - 70px - 48px - 75px) !important;
  }
}