/**
 * PlataformaRAP - Sistema de Diseño Mobile-First
 * Versión: 1.0.0
 * Fecha: 23 de diciembre de 2025
 */

/* ========================================
   1. VARIABLES CSS (Custom Properties)
   ======================================== */

:root {
  /* Colores Principales */
  --primary-color: #0d6efd;
  --primary-hover: #0b5ed7;
  --primary-light: #cfe2ff;
  --secondary-color: #6c757d;
  --secondary-hover: #5c636a;
  
  /* Colores de Estado */
  --success-color: #198754;
  --success-light: #d1e7dd;
  --danger-color: #dc3545;
  --danger-light: #f8d7da;
  --warning-color: #ffc107;
  --warning-light: #fff3cd;
  --info-color: #0dcaf0;
  --info-light: #cff4fc;
  
  /* Escala de Grises */
  --gray-100: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ced4da;
  --gray-500: #adb5bd;
  --gray-600: #6c757d;
  --gray-700: #495057;
  --gray-800: #343a40;
  --gray-900: #212529;
  
  --white: #ffffff;
  --black: #000000;
  
  /* Gradientes */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-success: linear-gradient(135deg, #56ab2f 0%, #a8e063 100%);
  --gradient-danger: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
  
  /* Espaciado (Sistema de 4px) */
  --spacing-xs: 0.25rem;   /* 4px */
  --spacing-sm: 0.5rem;    /* 8px */
  --spacing-md: 1rem;      /* 16px */
  --spacing-lg: 1.5rem;    /* 24px */
  --spacing-xl: 2rem;      /* 32px */
  --spacing-xxl: 3rem;     /* 48px */
  
  /* Tipografía */
  --font-family-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-mono: 'Courier New', Courier, monospace;
  
  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-base: 1rem;    /* 16px */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.25rem;   /* 20px */
  --font-size-2xl: 1.5rem;   /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem;  /* 36px */
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Bordes y Radios */
  --border-width: 1px;
  --border-color: var(--gray-300);
  
  --border-radius-sm: 0.25rem;  /* 4px */
  --border-radius-md: 0.5rem;   /* 8px */
  --border-radius-lg: 0.75rem;  /* 12px */
  --border-radius-xl: 1rem;     /* 16px */
  --border-radius-full: 9999px;
  
  /* Sombras */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Transiciones */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Z-index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  
  /* Tamaños Touch-Friendly (mínimo 44px según WCAG) */
  --touch-target-min: 44px;
  --input-height-sm: 38px;
  --input-height-md: 44px;
  --input-height-lg: 52px;
}

/* ========================================
   2. RESET Y BASE MOBILE-FIRST
   ======================================== */

* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--gray-900);
  background-color: var(--gray-100);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Asegurar que el contenedor principal tenga padding en móvil */
.container {
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
}

/* ========================================
   3. TIPOGRAFÍA RESPONSIVE
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  margin-bottom: var(--spacing-md);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
}

/* Títulos de sección (A+B: píldora + subrayado degradado) */
.section-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem 0.8rem 1.2rem;
  border-radius: 6px;
  background: var(--gray-100);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--gray-900);
  font-size: var(--font-size-2xl);
  margin-top: var(--spacing-xxl);
  margin-bottom: var(--spacing-lg);
  margin-left: auto;
  margin-right: auto;
  width: fit-content;
  transition: background var(--transition-fast), transform var(--transition-fast);
  border-bottom: 3px solid;
  border-image: linear-gradient(90deg, var(--primary-color), transparent) 1;
}

.section-header:hover {
  background: var(--gray-200);
  transform: translateX(4px);
}

.section-header i {
  font-size: 1.75rem;
  flex-shrink: 0;
}

@media (max-width: 767px) {
  .section-header {
    font-size: var(--font-size-xl);
    padding: 0.65rem 1.25rem 0.65rem 1rem;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    gap: 0.4rem;
  }
  
  .section-header i {
    font-size: 1.5rem;
  }
}

h1 {
  font-size: var(--font-size-2xl);
}

h2 {
  font-size: var(--font-size-xl);
}

h3 {
  font-size: var(--font-size-lg);
}

/* Títulos más grandes en desktop */
@media (min-width: 768px) {
  h1 {
    font-size: var(--font-size-4xl);
  }
  
  h2 {
    font-size: var(--font-size-3xl);
  }
  
  h3 {
    font-size: var(--font-size-2xl);
  }
}

/* ========================================
   4. BOTONES TOUCH-FRIENDLY
   ======================================== */

.btn,
button,
a.btn {
  min-height: var(--touch-target-min);
  min-width: var(--touch-target-min);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: translateY(1px);
}

/* Botones en móvil más espaciosos */
@media (max-width: 767px) {
  .btn {
    padding: var(--spacing-md) var(--spacing-xl);
    width: 100%;
    justify-content: center;
  }
  
  .btn-group .btn {
    width: auto;
  }
}

/* ========================================
   5. FORMULARIOS TOUCH-FRIENDLY
   ======================================== */

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="tel"],
input[type="url"],
input[type="search"],
input[type="date"],
select,
textarea {
  min-height: var(--input-height-md);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-base);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  width: 100%;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--primary-light);
}

/* Labels más grandes en móvil */
label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
}

/* ========================================
   6. TABLAS RESPONSIVE
   ======================================== */

.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table-responsive table {
  min-width: 100%;
}

/* Indicador de scroll en tablas */
.table-responsive::after {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 30px;
  background: linear-gradient(to right, transparent, rgba(0,0,0,0.05));
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.table-responsive:not(.scrolled-end)::after {
  opacity: 1;
}

/* Tablas como cards en móvil */
@media (max-width: 767px) {
  .table-mobile-cards {
    display: block;
  }
  
  .table-mobile-cards thead {
    display: none;
  }
  
  /* Mostrar filas como cards (1 por fila) en móvil */
  .table-mobile-cards tbody {
    display: block;
  }
  
  .table-mobile-cards tr {
    display: block;
    margin-bottom: 0.75rem;
    border: none;
    border-radius: var(--border-radius-lg);
    padding: 0.75rem;
    background: var(--white);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    position: relative;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
  }
  
  .table-mobile-cards tr:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
  }
  
  /* Borde lateral de color */
  .table-mobile-cards tr::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--primary-color);
  }
  
  .table-mobile-cards td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 0.75rem;
    border-bottom: var(--border-width) solid var(--gray-200);
    transition: background var(--transition-fast);
    font-size: var(--font-size-sm);
  }
  
  .table-mobile-cards td:hover {
    background: var(--gray-100);
  }
  
  .table-mobile-cards td:last-child {
    border-bottom: none;
  }
  
  .table-mobile-cards td::before {
    content: attr(data-label);
    font-weight: var(--font-weight-semibold);
    color: var(--gray-600);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
  }
  
  /* Valor del campo (lado derecho) */
  .table-mobile-cards td::after {
    font-weight: var(--font-weight-medium);
    color: var(--gray-900);
  }
  
  /* Primera fila: centrada, en negritas, sin label, con fondo degradado */
  .table-mobile-cards td:first-child {
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    padding: 0.75rem 0.75rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: var(--white);
    border-bottom: none;
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
  }
  
  .table-mobile-cards td:first-child:hover {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
  }
  
  .table-mobile-cards td:first-child::before {
    display: none;
  }
  
  /* Mejorar visualmente campos monetarios */
  .table-mobile-cards td[data-label*="mporte"],
  .table-mobile-cards td[data-label*="otal"],
  .table-mobile-cards td[data-label*="onto"],
  .table-mobile-cards td[data-label*="Precio"],
  .table-mobile-cards td[data-label*="Saldo"] {
    background: linear-gradient(to right, transparent, var(--success-light));
  }
  
  .table-mobile-cards td[data-label*="mporte"] *,
  .table-mobile-cards td[data-label*="otal"] *,
  .table-mobile-cards td[data-label*="onto"] *,
  .table-mobile-cards td[data-label*="Precio"] *,
  .table-mobile-cards td[data-label*="Saldo"] * {
    color: var(--success-color);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-base);
  }
  
  /* Destacar campos de fecha */
  .table-mobile-cards td[data-label*="echa"]::before {
    content: "📅 " attr(data-label);
  }
  
  /* Destacar campos de tipo */
  .table-mobile-cards td[data-label*="ipo"]::before {
    content: "🏷️ " attr(data-label);
  }

  /* Botón toggle de vista (cards ↔ tabla) */
  .table-view-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: background var(--transition-fast), transform var(--transition-fast);
    margin-bottom: var(--spacing-md);
  }

  .table-view-toggle:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
  }

  .table-view-toggle:active {
    transform: translateY(0);
  }

  /* Vista de tabla (oculta por defecto en móvil, visible si .table-view está activo) */
  @media (max-width: 767px) {
    /* Cuando se activa vista de tabla, mostrar tabla normal de escritorio */
    .table-mobile-cards.table-view {
      display: table;
      width: 100%;
    }

    .table-mobile-cards.table-view thead {
      display: table-header-group;
      background: var(--gray-100);
    }

    .table-mobile-cards.table-view tbody {
      display: table-row-group;
    }

    .table-mobile-cards.table-view tr {
      display: table-row;
      margin-bottom: 0;
      border-radius: 0;
      padding: 0;
      background: transparent;
      box-shadow: none;
      position: static;
      border-bottom: var(--border-width) solid var(--gray-300);
    }

    /* Eliminar todos los estilos específicos de cards cuando está en .table-view */
    .table-mobile-cards.table-view tr::before {
      display: none;
    }

    .table-mobile-cards.table-view tr:hover {
      transform: none;
      box-shadow: none;
      background: var(--gray-50);
    }

    .table-mobile-cards.table-view td {
      display: table-cell;
      padding: 0.5rem 0.4rem;
      border: var(--border-width) solid var(--gray-300);
      text-align: center;
      justify-content: unset;
      flex-direction: unset;
      flex: unset;
      font-size: 1rem;
    }

    /* Ocultar labels (data-label) cuando está en vista tabla */
    .table-mobile-cards.table-view td::before {
      display: none !important;
    }

    .table-mobile-cards.table-view td::after {
      display: none !important;
    }

    .table-mobile-cards.table-view td:hover {
      background: var(--gray-100);
    }

    /* Primera fila vuelve a estar normal */
    .table-mobile-cards.table-view td:first-child {
      justify-content: center;
      padding: 0.5rem 0.4rem;
      text-align: center;
      background: transparent;
      color: var(--gray-900);
      text-shadow: none;
      border-radius: 0;
      font-size: 0.95rem;
      font-weight: var(--font-weight-bold);
    }

    /* Alternar colores de filas */
    .table-mobile-cards.table-view tbody tr:nth-child(even) td {
      background: var(--gray-50);
    }

    .table-mobile-cards.table-view tbody tr:hover td {
      background: var(--gray-100);
    }

    /* Desactivar estilos especiales de moneda en vista tabla */
    .table-mobile-cards.table-view td[data-label*="mporte"],
    .table-mobile-cards.table-view td[data-label*="otal"],
    .table-mobile-cards.table-view td[data-label*="onto"],
    .table-mobile-cards.table-view td[data-label*="Precio"],
    .table-mobile-cards.table-view td[data-label*="Saldo"] {
      background: transparent;
    }

    .table-mobile-cards.table-view td[data-label*="mporte"] *,
    .table-mobile-cards.table-view td[data-label*="otal"] *,
    .table-mobile-cards.table-view td[data-label*="onto"] *,
    .table-mobile-cards.table-view td[data-label*="Precio"] *,
    .table-mobile-cards.table-view td[data-label*="Saldo"] * {
      color: inherit;
      font-size: inherit;
    }

    /* Headers de tabla */
    .table-mobile-cards.table-view th {
      display: table-cell;
      padding: 0.5rem 0.0rem;
      border: var(--border-width) solid var(--gray-300);
      background: var(--primary-color);
      color: white;
      font-weight: var(--font-weight-bold);
      text-align: center;
      font-size: 0.8rem;
      text-transform: uppercase;
      letter-spacing: 0.2px;
    }
  }

  
  /* Ocultar filas con valores vacíos */
  .table-mobile-cards td:empty {
    display: none;
  }
  
  /* Ocultar filas donde el texto está vacío (solo espacios) */
  .table-mobile-cards td[data-empty="true"] {
    display: none;
  }
  
  /* Variante para movimientos de entrada (verde) */
  .table-mobile-cards tr.movimiento-entrada::before {
    background: linear-gradient(to bottom, var(--success-color), #0f5132);
  }
  
  /* Variante para movimientos de salida (rojo) */
  .table-mobile-cards tr.movimiento-salida::before {
    background: linear-gradient(to bottom, var(--danger-color), #842029);
  }
  
  /* Variante para préstamos (amarillo) */
  .table-mobile-cards tr.movimiento-prestamo::before {
    background: linear-gradient(to bottom, var(--warning-color), #997404);
  }
  
  /* Badge para tipos de movimiento */
  .table-mobile-cards td[data-label*="ipo"] {
    background: transparent;
  }
  
  .table-mobile-cards tr.movimiento-entrada td[data-label*="ipo"] {
    background: var(--success-light);
  }
  
  .table-mobile-cards tr.movimiento-entrada td[data-label*="ipo"]::after {
    content: "✓";
    display: inline-block;
    margin-left: var(--spacing-sm);
    color: var(--success-color);
    font-weight: var(--font-weight-bold);
  }
  
  .table-mobile-cards tr.movimiento-salida td[data-label*="ipo"] {
    background: var(--danger-light);
  }
  
  .table-mobile-cards tr.movimiento-salida td[data-label*="ipo"]::after {
    content: "✗";
    display: inline-block;
    margin-left: var(--spacing-sm);
    color: var(--danger-color);
    font-weight: var(--font-weight-bold);
  }
  
  .table-mobile-cards tr.movimiento-prestamo td[data-label*="ipo"] {
    background: var(--warning-light);
  }
  
  .table-mobile-cards tr.movimiento-prestamo td[data-label*="ipo"]::after {
    content: "⚠";
    display: inline-block;
    margin-left: var(--spacing-sm);
    color: var(--warning-color);
    font-weight: var(--font-weight-bold);
  }
}

/* ========================================
   7. CARDS RESPONSIVE
   ======================================== */

.card {
  background: var(--white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.card-header {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: var(--border-width) solid var(--border-color);
  font-weight: var(--font-weight-semibold);
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: var(--border-width) solid var(--border-color);
  background: var(--gray-100);
}

/* Grid de cards responsive */
.card-grid {
  display: grid;
  gap: var(--spacing-sm);
  grid-template-columns: repeat(2, 1fr); /* 2 columnas en móvil */
}

@media (min-width: 576px) {
  .card-grid {
    gap: var(--spacing-md);
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 992px) {
  .card-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1200px) {
  .card-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ========================================
   8. NAVEGACIÓN MÓVIL
   ======================================== */

/* Bottom Navigation (solo móvil) */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--white);
  border-top: var(--border-width) solid var(--border-color);
  box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
  z-index: var(--z-fixed);
  padding-bottom: env(safe-area-inset-bottom);
}

/* Popup de submenú inventario */
.bottom-nav-popup {
  display: none;
  position: fixed;
  bottom: 70px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--spacing-sm);
  z-index: calc(var(--z-fixed) + 1);
  min-width: 250px;
  animation: slideUp var(--transition-base);
}

.bottom-nav-popup.show {
  display: block;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.bottom-nav-popup::before {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-top: 8px solid var(--white);
}

.bottom-nav-popup-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  color: var(--gray-900);
  text-decoration: none;
  border-radius: var(--border-radius-md);
  transition: background var(--transition-fast);
  font-weight: var(--font-weight-medium);
}

.bottom-nav-popup-item:hover {
  background: var(--gray-100);
}

.bottom-nav-popup-item i {
  font-size: var(--font-size-lg);
  color: var(--primary-color);
  width: 24px;
  text-align: center;
}

/* Estilo para item de cerrar sesión */
.bottom-nav-popup-item.text-danger {
  color: var(--danger-color);
}

.bottom-nav-popup-item.text-danger i {
  color: var(--danger-color);
}

/* Backdrop para cerrar popup */
.bottom-nav-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: transparent;
  z-index: var(--z-fixed);
}

.bottom-nav-backdrop.show {
  display: block;
}

/* Evitar interferencia entre múltiples backdrops */
#inventarioBackdrop {
  z-index: var(--z-fixed);
}

#usuarioBackdrop {
  z-index: var(--z-fixed);
}

/* Asegurar que solo un backdrop sea interactivo a la vez */
.bottom-nav-backdrop:not(.show) {
  pointer-events: none;
}
@media (max-width: 767px) {
  .bottom-nav {
    display: flex;
    justify-content: space-around;
    align-items: center;
  }
  
  /* Agregar padding al body para compensar bottom nav */
  body.has-bottom-nav {
    padding-bottom: calc(60px + env(safe-area-inset-bottom));
  }
}

.bottom-nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm);
  color: var(--gray-600);
  text-decoration: none;
  font-size: var(--font-size-xs);
  min-height: var(--touch-target-min);
  transition: color var(--transition-fast);
}

.bottom-nav-item i {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xs);
}

.bottom-nav-item.active,
.bottom-nav-item:hover {
  color: var(--primary-color);
}

/* Ocultar navbar desktop en móvil */
@media (max-width: 767px) {
  .navbar-desktop {
    display: none;
  }
}

/* ========================================
   9. UTILIDADES RESPONSIVE
   ======================================== */

/* Mostrar/Ocultar según breakpoint */
.d-mobile {
  display: block;
}

.d-desktop {
  display: none;
}

@media (min-width: 768px) {
  .d-mobile {
    display: none;
  }
  
  .d-desktop {
    display: block;
  }
}

/* Espaciado responsive */
.py-mobile {
  padding-top: var(--spacing-md);
  padding-bottom: var(--spacing-md);
}

@media (min-width: 768px) {
  .py-mobile {
    padding-top: var(--spacing-xxl);
    padding-bottom: var(--spacing-xxl);
  }
}

/* ========================================
   10. ANIMACIONES Y TRANSICIONES
   ======================================== */

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

.animate-fade-in {
  animation: fadeIn var(--transition-base);
}

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

/* ========================================
   11. ACCESIBILIDAD
   ======================================== */

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

/* Reducir movimiento para usuarios que lo prefieren */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ========================================
   12. UTILIDADES GENERALES
   ======================================== */

/* Text utilities */
.text-center {
  text-align: center;
}

.text-primary {
  color: var(--primary-color);
}

.text-success {
  color: var(--success-color);
}

.text-danger {
  color: var(--danger-color);
}

.text-muted {
  color: var(--gray-600);
}

/* Background utilities */
.bg-primary {
  background-color: var(--primary-color);
  color: var(--white);
}

.bg-success {
  background-color: var(--success-color);
  color: var(--white);
}

.bg-danger {
  background-color: var(--danger-color);
  color: var(--white);
}

/* Spacing utilities */
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

/* ========================================
   13. LOADING STATES
   ======================================== */

.loading-spinner {
  border: 3px solid var(--gray-200);
  border-top-color: var(--primary-color);
  border-radius: var(--border-radius-full);
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
}

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

/* Loading overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
}

/* ========================================
   14. OPTIMIZACIONES DE RENDIMIENTO
   ======================================== */

/* Will-change para animaciones suaves */
.btn:hover,
.card:hover {
  will-change: transform;
}

/* Lazy loading de imágenes */
img[loading="lazy"] {
  background: var(--gray-200);
}

/* ========================================
   15. PRINT STYLES
   ======================================== */

@media print {
  .bottom-nav,
  .navbar,
  .btn,
  button {
    display: none !important;
  }
  
  .container {
    max-width: 100%;
  }
}