/* ============================================
   BINGO VIRTUAL ONLINE - ESTILOS PRINCIPALES
   Inspirado en Material Design y DexignZone
   ============================================ */

/* ====================
   VARIABLES CSS - TEMA CLARO/OSCURO
   ==================== */
:root {
  /* Colores Primarios - Inspirado en gradientes de las imágenes */
  --primary-gradient: linear-gradient(135deg, #6C63FF 0%, #4A90E2 100%);
  --secondary-gradient: linear-gradient(135deg, #FF9500 0%, #FF6B6B 100%);
  --success-gradient: linear-gradient(135deg, #00C853 0%, #64DD17 100%);
  
  /* Colores Base */
  --primary-color: #6C63FF;
  --primary-light: #9E9AFF;
  --primary-dark: #453CC4;
  --secondary-color: #FF9500;
  --success-color: #00C853;
  --warning-color: #FF9500;
  --danger-color: #FF5252;
  --info-color: #2196F3;
  
  /* Colores de Fondo */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F5F5F5;
  --bg-tertiary: #EEEEEE;
  --bg-dark: #121212;
  --bg-dark-secondary: #1E1E1E;
  --bg-dark-tertiary: #2C2C2C;
  
  /* Colores de Texto */
  --text-primary: #212121;
  --text-secondary: #757575;
  --text-tertiary: #9E9E9E;
  --text-on-primary: #FFFFFF;
  --text-on-dark: #FFFFFF;
  
  /* Bordes y Sombras - Basado en Material Design */
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --border-radius-full: 50%;
  
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 8px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 16px rgba(0,0,0,0.15);
  --shadow-xl: 0 12px 24px rgba(0,0,0,0.18);
  --shadow-2xl: 0 16px 32px rgba(0,0,0,0.22);
  
  /* Elevaciones Material Design */
  --elevation-1: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
  --elevation-2: 0 3px 6px rgba(0,0,0,0.15), 0 2px 4px rgba(0,0,0,0.12);
  --elevation-3: 0 10px 20px rgba(0,0,0,0.15), 0 3px 6px rgba(0,0,0,0.10);
  --elevation-4: 0 15px 25px rgba(0,0,0,0.15), 0 5px 10px rgba(0,0,0,0.05);
  --elevation-5: 0 20px 40px rgba(0,0,0,0.20);
  
  /* Tipografía */
  --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --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-size-5xl: 3rem;      /* 48px */
  
  /* Spacing */
  --spacing-xs: 0.25rem;  /* 4px */
  --spacing-sm: 0.5rem;   /* 8px */
  --spacing-md: 1rem;     /* 16px */
  --spacing-lg: 1.5rem;   /* 24px */
  --spacing-xl: 2rem;     /* 32px */
  --spacing-2xl: 3rem;    /* 48px */
  --spacing-3xl: 4rem;    /* 64px */
  
  /* Transiciones */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-Index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Tema Oscuro */
[data-theme="dark"] {
  --bg-primary: #121212;
  --bg-secondary: #1E1E1E;
  --bg-tertiary: #2C2C2C;
  --text-primary: #FFFFFF;
  --text-secondary: #B0B0B0;
  --text-tertiary: #757575;
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 8px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 16px rgba(0,0,0,0.6);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* ====================
   TIPOGRAFÍA
   ==================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

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

a:hover {
  color: var(--primary-dark);
}

/* ====================
   LAYOUT GENERAL
   ==================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-md);
}

.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 calc(var(--spacing-md) * -0.5);
}

.col {
  flex: 1;
  padding: 0 calc(var(--spacing-md) * 0.5);
}

/* Sistema de Grid Responsive */
.col-1 { flex: 0 0 8.333%; max-width: 8.333%; }
.col-2 { flex: 0 0 16.666%; max-width: 16.666%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }
.col-4 { flex: 0 0 33.333%; max-width: 33.333%; }
.col-5 { flex: 0 0 41.666%; max-width: 41.666%; }
.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-7 { flex: 0 0 58.333%; max-width: 58.333%; }
.col-8 { flex: 0 0 66.666%; max-width: 66.666%; }
.col-9 { flex: 0 0 75%; max-width: 75%; }
.col-10 { flex: 0 0 83.333%; max-width: 83.333%; }
.col-11 { flex: 0 0 91.666%; max-width: 91.666%; }
.col-12 { flex: 0 0 100%; max-width: 100%; }

/* ====================
   HEADER APP MÓVIL
   ==================== */
.app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: var(--primary-gradient);
  color: var(--text-on-primary);
  padding: var(--spacing-md) var(--spacing-md) calc(var(--spacing-md) + 60px);
  box-shadow: var(--elevation-2);
  transition: all var(--transition-base);
}

.app-header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.app-header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.app-header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.balance-display {
  background: rgba(255,255,255,0.2);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-full);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.balance-amount {
  font-weight: 700;
  font-size: var(--font-size-lg);
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-full);
  background: var(--secondary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--elevation-1);
  transition: transform var(--transition-fast);
}

.user-avatar:hover {
  transform: scale(1.1);
}

.header-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-full);
  background: rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.header-icon:hover {
  background: rgba(255,255,255,0.25);
}

/* Espaciado para contenido debajo del header */
.header-spacer {
  height: 140px;
}

/* ====================
   FOOTER NAVEGACIÓN MÓVIL
   ==================== */
.mobile-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: var(--bg-primary);
  display: flex;
  justify-content: space-around;
  padding: var(--spacing-sm) 0;
  box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
  border-top: 1px solid var(--bg-tertiary);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm);
  color: var(--text-tertiary);
  transition: color var(--transition-fast);
  cursor: pointer;
}

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

.nav-item-icon {
  font-size: 24px;
}

.nav-item-label {
  font-size: var(--font-size-xs);
  font-weight: 500;
}

/* Espaciado para contenido encima del footer */
.footer-spacer {
  height: 70px;
}

/* ====================
   CARDS - Estilo inspirado en DexignZone
   ==================== */
.card {
  background: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--elevation-1);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
  margin-bottom: var(--spacing-md);
}

.card:hover {
  box-shadow: var(--elevation-3);
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--bg-tertiary);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin: 0;
  color: var(--text-primary);
}

.card-body {
  flex: 1;
}

.card-footer {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--bg-tertiary);
}

/* Card Gradient */
.card-gradient {
  background: var(--primary-gradient);
  color: var(--text-on-primary);
}

.card-gradient .card-title,
.card-gradient p {
  color: var(--text-on-primary);
}

/* Card con imagen */
.card-with-image {
  overflow: hidden;
  padding: 0;
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

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

/* ====================
   BOTONES - Material Design
   ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 500;
  border: none;
  border-radius: var(--border-radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  outline: none;
  position: relative;
  overflow: hidden;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Ripple effect */
.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: var(--border-radius-full);
  background: rgba(255,255,255,0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:active::after {
  width: 300px;
  height: 300px;
}

/* Tamaños */
.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

.btn-xl {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--font-size-xl);
}

/* Variantes */
.btn-primary {
  background: var(--primary-gradient);
  color: var(--text-on-primary);
  box-shadow: var(--elevation-2);
}

.btn-primary:hover {
  box-shadow: var(--elevation-3);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--secondary-gradient);
  color: var(--text-on-primary);
  box-shadow: var(--elevation-2);
}

.btn-secondary:hover {
  box-shadow: var(--elevation-3);
  transform: translateY(-1px);
}

.btn-success {
  background: var(--success-gradient);
  color: var(--text-on-primary);
  box-shadow: var(--elevation-2);
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline:hover {
  background: var(--primary-color);
  color: var(--text-on-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background: var(--bg-tertiary);
}

.btn-full {
  width: 100%;
}

/* ====================
   FORMULARIOS - Material Design
   ==================== */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
}

.form-control {
  width: 100%;
  padding: var(--spacing-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-primary);
  border: 2px solid var(--bg-tertiary);
  border-radius: var(--border-radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.1);
}

.form-control::placeholder {
  color: var(--text-tertiary);
}

.form-control:disabled {
  background: var(--bg-tertiary);
  opacity: 0.6;
}

/* Select */
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%236C63FF' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-md) center;
  background-size: 20px;
  padding-right: calc(var(--spacing-md) * 3);
}

/* Checkbox y Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
}

.form-check-input {
  width: 20px;
  height: 20px;
  accent-color: var(--primary-color);
  cursor: pointer;
}

.form-check-label {
  margin: 0;
  cursor: pointer;
}

/* ====================
   BOTTOM SHEET - Modal tipo hoja inferior
   ==================== */
.bottom-sheet-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: var(--z-modal-backdrop);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.bottom-sheet-overlay.active {
  opacity: 1;
  visibility: visible;
}

.bottom-sheet {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
  padding: var(--spacing-lg);
  z-index: var(--z-modal);
  transform: translateY(100%);
  transition: transform var(--transition-slow);
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--elevation-4);
}

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

.bottom-sheet-handle {
  width: 40px;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: var(--border-radius-full);
  margin: 0 auto var(--spacing-lg);
  cursor: grab;
}

.bottom-sheet-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--bg-tertiary);
}

.bottom-sheet-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin: 0;
}

.bottom-sheet-close {
  background: var(--bg-tertiary);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: var(--border-radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-secondary);
  transition: background var(--transition-fast);
}

.bottom-sheet-close:hover {
  background: var(--text-tertiary);
  color: var(--text-primary);
}

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

/* ====================
   MODAL GENERAL
   ==================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: var(--z-modal-backdrop);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-primary);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-lg);
  width: 100%;
  max-width: 500px;
  z-index: var(--z-modal);
  transform: scale(0.9);
  opacity: 0;
  transition: transform var(--transition-slow), opacity var(--transition-slow);
  box-shadow: var(--elevation-4);
}

.modal-overlay.active .modal {
  transform: scale(1);
  opacity: 1;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin: 0;
}

.modal-close {
  background: var(--bg-tertiary);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: var(--border-radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-secondary);
  transition: background var(--transition-fast);
}

.modal-close:hover {
  background: var(--text-tertiary);
  color: var(--text-primary);
}

.modal-body {
  margin-bottom: var(--spacing-lg);
}

.modal-footer {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

/* ====================
   TOGGLES Y SWITCHES - Material Design
   ==================== */
.toggle {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 28px;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-tertiary);
  transition: var(--transition-base);
  border-radius: var(--border-radius-full);
}

.toggle-slider:before {
  position: absolute;
  content: '';
  height: 22px;
  width: 22px;
  left: 3px;
  bottom: 3px;
  background: white;
  transition: var(--transition-base);
  border-radius: var(--border-radius-full);
  box-shadow: var(--elevation-1);
}

.toggle input:checked + .toggle-slider {
  background: var(--primary-color);
}

.toggle input:checked + .toggle-slider:before {
  transform: translateX(22px);
}

/* Toggle con etiqueta */
.toggle-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
}

.toggle-label {
  font-weight: 500;
  color: var(--text-primary);
}

.toggle-description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

/* ====================
   SLIDERS
   ==================== */
.slider {
  width: 100%;
  height: 6px;
  border-radius: var(--border-radius-full);
  background: var(--bg-tertiary);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.slider::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: var(--border-radius-full);
  background: var(--primary-color);
  cursor: pointer;
  box-shadow: var(--elevation-1);
}

.slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: var(--border-radius-full);
  background: var(--primary-color);
  cursor: pointer;
  box-shadow: var(--elevation-1);
  border: none;
}

/* ====================
   TABLAS
   ==================== */
.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.table th,
.table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--bg-tertiary);
}

.table th {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  font-size: var(--font-size-xs);
  letter-spacing: 0.5px;
}

.table tr:last-child td {
  border-bottom: none;
}

.table tr:hover {
  background: var(--bg-secondary);
}

/* ====================
   BADGES Y CHIPS
   ==================== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--border-radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-primary { background: var(--primary-color); color: white; }
.badge-secondary { background: var(--secondary-color); color: white; }
.badge-success { background: var(--success-color); color: white; }
.badge-danger { background: var(--danger-color); color: white; }
.badge-warning { background: var(--warning-color); color: white; }
.badge-info { background: var(--info-color); color: white; }
.badge-light { background: var(--bg-tertiary); color: var(--text-primary); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  border: 1px solid var(--bg-tertiary);
}

.chip-close {
  width: 20px;
  height: 20px;
  background: var(--bg-tertiary);
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 12px;
  color: var(--text-secondary);
}

/* ====================
   ALERTAS
   ==================== */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.alert-icon {
  font-size: 20px;
}

.alert-primary {
  background: rgba(108, 99, 255, 0.1);
  color: var(--primary-color);
  border-left: 4px solid var(--primary-color);
}

.alert-success {
  background: rgba(0, 200, 83, 0.1);
  color: var(--success-color);
  border-left: 4px solid var(--success-color);
}

.alert-warning {
  background: rgba(255, 149, 0, 0.1);
  color: var(--warning-color);
  border-left: 4px solid var(--warning-color);
}

.alert-danger {
  background: rgba(255, 82, 82, 0.1);
  color: var(--danger-color);
  border-left: 4px solid var(--danger-color);
}

.alert-info {
  background: rgba(33, 150, 243, 0.1);
  color: var(--info-color);
  border-left: 4px solid var(--info-color);
}

/* ====================
   ANIMACIONES
   ==================== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

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

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

@keyframes slideRight {
  from { transform: translateX(-20px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-10px); }
  60% { transform: translateY(-5px); }
}

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

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
  20%, 40%, 60%, 80% { transform: translateX(5px); }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Clases de animación */
.animate-fadeIn { animation: fadeIn 0.3s ease-in; }
.animate-slideUp { animation: slideUp 0.3s ease-out; }
.animate-slideDown { animation: slideDown 0.3s ease-out; }
.animate-slideLeft { animation: slideLeft 0.3s ease-out; }
.animate-slideRight { animation: slideRight 0.3s ease-out; }
.animate-bounce { animation: bounce 1s ease infinite; }
.animate-pulse { animation: pulse 2s ease infinite; }
.animate-shake { animation: shake 0.5s ease; }
.animate-spin { animation: spin 1s linear infinite; }

/* Animación deshabilitada */
.animations-disabled * {
  animation: none !important;
  transition: none !important;
}

/* ====================
   PÁGINA LANDING
   ==================== */
.landing-hero {
  background: var(--primary-gradient);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--text-on-primary);
  padding: var(--spacing-2xl) var(--spacing-md);
}

.landing-hero h1 {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--spacing-lg);
}

.landing-hero p {
  font-size: var(--font-size-lg);
  color: rgba(255,255,255,0.9);
  margin-bottom: var(--spacing-xl);
}

.steps-section {
  padding: var(--spacing-3xl) var(--spacing-md);
  background: var(--bg-primary);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-2xl);
}

.step-card {
  text-align: center;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  background: var(--bg-secondary);
  transition: transform var(--transition-base);
}

.step-card:hover {
  transform: translateY(-5px);
}

.step-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-lg);
}

.step-number {
  display: inline-flex;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: var(--primary-gradient);
  color: white;
  border-radius: var(--border-radius-full);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

/* ====================
   RESPONSIVE MEDIA QUERIES
   ==================== */
@media (max-width: 768px) {
  .hide-mobile {
    display: none;
  }
  
  .col-sm-1 { flex: 0 0 8.333%; max-width: 8.333%; }
  .col-sm-2 { flex: 0 0 16.666%; max-width: 16.666%; }
  .col-sm-3 { flex: 0 0 25%; max-width: 25%; }
  .col-sm-4 { flex: 0 0 33.333%; max-width: 33.333%; }
  .col-sm-5 { flex: 0 0 41.666%; max-width: 41.666%; }
  .col-sm-6 { flex: 0 0 50%; max-width: 50%; }
  .col-sm-7 { flex: 0 0 58.333%; max-width: 58.333%; }
  .col-sm-8 { flex: 0 0 66.666%; max-width: 66.666%; }
  .col-sm-9 { flex: 0 0 75%; max-width: 75%; }
  .col-sm-10 { flex: 0 0 83.333%; max-width: 83.333%; }
  .col-sm-11 { flex: 0 0 91.666%; max-width: 91.666%; }
  .col-sm-12 { flex: 0 0 100%; max-width: 100%; }
}

@media (min-width: 769px) {
  .col-md-1 { flex: 0 0 8.333%; max-width: 8.333%; }
  .col-md-2 { flex: 0 0 16.666%; max-width: 16.666%; }
  .col-md-3 { flex: 0 0 25%; max-width: 25%; }
  .col-md-4 { flex: 0 0 33.333%; max-width: 33.333%; }
  .col-md-5 { flex: 0 0 41.666%; max-width: 41.666%; }
  .col-md-6 { flex: 0 0 50%; max-width: 50%; }
  .col-md-7 { flex: 0 0 58.333%; max-width: 58.333%; }
  .col-md-8 { flex: 0 0 66.666%; max-width: 66.666%; }
  .col-md-9 { flex: 0 0 75%; max-width: 75%; }
  .col-md-10 { flex: 0 0 83.333%; max-width: 83.333%; }
  .col-md-11 { flex: 0 0 91.666%; max-width: 91.666%; }
  .col-md-12 { flex: 0 0 100%; max-width: 100%; }
  
  .hide-desktop {
    display: none;
  }
}

@media (min-width: 992px) {
  .col-lg-1 { flex: 0 0 8.333%; max-width: 8.333%; }
  .col-lg-2 { flex: 0 0 16.666%; max-width: 16.666%; }
  .col-lg-3 { flex: 0 0 25%; max-width: 25%; }
  .col-lg-4 { flex: 0 0 33.333%; max-width: 33.333%; }
  .col-lg-5 { flex: 0 0 41.666%; max-width: 41.666%; }
  .col-lg-6 { flex: 0 0 50%; max-width: 50%; }
  .col-lg-7 { flex: 0 0 58.333%; max-width: 58.333%; }
  .col-lg-8 { flex: 0 0 66.666%; max-width: 66.666%; }
  .col-lg-9 { flex: 0 0 75%; max-width: 75%; }
  .col-lg-10 { flex: 0 0 83.333%; max-width: 83.333%; }
  .col-lg-11 { flex: 0 0 91.666%; max-width: 91.666%; }
  .col-lg-12 { flex: 0 0 100%; max-width: 100%; }
}

/* ====================
   ESTILOS ESPECÍFICOS DEL JUEGO
   ==================== */
/* Cartones de Bingo 3D */
.bingo-card {
  background: white;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--elevation-2);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  perspective: 1000px;
}

.bingo-card:hover {
  transform: rotateY(5deg) rotateX(5deg) scale(1.05);
  box-shadow: var(--elevation-4);
}

.bingo-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-sm);
}

.bingo-cell {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--bg-tertiary);
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  font-size: var(--font-size-sm);
  background: var(--bg-secondary);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.bingo-cell.marked {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  transform: scale(1.1);
}

.bingo-cell:hover {
  border-color: var(--primary-color);
}

/* Bolas de Bingo 3D */
.bingo-ball {
  width: 60px;
  height: 60px;
  border-radius: var(--border-radius-full);
  background: linear-gradient(135deg, #FF9500 0%, #FF6B6B 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: white;
  box-shadow: 
    0 10px 20px rgba(255, 149, 0, 0.3),
    inset 0 -5px 10px rgba(0,0,0,0.1),
    inset 0 5px 10px rgba(255,255,255,0.3);
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
  animation: bounce 1s ease infinite;
}

/* Tablero de números */
.numbers-board {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--border-radius-lg);
}

.number-cell {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
  background: var(--bg-primary);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.number-cell.called {
  background: var(--secondary-color);
  color: white;
  font-weight: 700;
  animation: pulse 0.5s ease;
}

.number-cell.last-called {
  background: var(--primary-color);
  color: white;
  transform: scale(1.2);
  box-shadow: var(--elevation-2);
}

/* Efectos 3D deshabilitados */
.effects-3d-disabled .bingo-card:hover {
  transform: none;
  box-shadow: var(--elevation-2);
}

/* ====================
   ADMIN DASHBOARD STYLES
   ==================== */
.admin-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 250px;
  height: 100vh;
  background: var(--bg-dark);
  color: var(--text-on-dark);
  padding: var(--spacing-lg);
  overflow-y: auto;
  z-index: var(--z-fixed);
}

.admin-sidebar-header {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--bg-dark-secondary);
}

.admin-nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.admin-nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  color: var(--text-on-dark);
  text-decoration: none;
  transition: all var(--transition-fast);
}

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

.admin-main {
  margin-left: 250px;
  padding: var(--spacing-xl);
  background: var(--bg-secondary);
  min-height: 100vh;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 2px solid var(--bg-tertiary);
}

/* Stats Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.stat-card {
  background: white;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--elevation-1);
  transition: transform var(--transition-base);
}

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

.stat-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: var(--spacing-md);
}

.stat-icon.primary { background: rgba(108, 99, 255, 0.1); color: var(--primary-color); }
.stat-icon.success { background: rgba(0, 200, 83, 0.1); color: var(--success-color); }
.stat-icon.warning { background: rgba(255, 149, 0, 0.1); color: var(--warning-color); }
.stat-icon.danger { background: rgba(255, 82, 82, 0.1); color: var(--danger-color); }

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary);
}

.stat-change {
  font-size: var(--font-size-sm);
  color: var(--success-color);
  margin-top: var(--spacing-xs);
}

/* ====================
   UTILIDADES
   ==================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--text-secondary); }
.text-success { color: var(--success-color); }
.text-warning { color: var(--warning-color); }
.text-danger { color: var(--danger-color); }
.text-muted { color: var(--text-tertiary); }

.bg-primary { background: var(--primary-color); }
.bg-secondary { background: var(--bg-secondary); }
.bg-success { background: var(--success-color); }
.bg-warning { background: var(--warning-color); }
.bg-danger { background: var(--danger-color); }

.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); }

.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); }

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

.d-none { display: none !important; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-inline-flex { display: inline-flex; }
.d-inline-block { display: inline-block; }

.flex-column { flex-direction: column; }
.flex-row { flex-direction: row; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.align-center { align-items: center; }
.align-start { align-items: flex-start; }
.align-end { align-items: flex-end; }
.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }
.gap-5 { gap: var(--spacing-xl); }

.rounded { border-radius: var(--border-radius-md); }
.rounded-lg { border-radius: var(--border-radius-lg); }
.rounded-full { border-radius: var(--border-radius-full); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

.w-100 { width: 100%; }
.h-100 { height: 100%; }