/* ===== SISTEMA DE ESTILOS PROFESIONAL EDUHACK ===== */

/* Variables CSS para consistencia y mantenimiento */
:root {
  /* Colores principales - EduHack Brand */
  --primary-50: #f0fdf4;
  --primary-100: #dcfce7;
  --primary-200: #bbf7d0;
  --primary-300: #86efac;
  --primary-400: #4ade80;
  --primary-500: #22c55e;
  --primary-600: #16a34a;
  --primary-700: #15803d;
  --primary-800: #166534;
  --primary-900: #14532d;
  
  /* Colores secundarios */
  --secondary-50: #f0fdf4;
  --secondary-100: #dcfce7;
  --secondary-200: #bbf7d0;
  --secondary-300: #86efac;
  --secondary-400: #4ade80;
  --secondary-500: #22c55e;
  --secondary-600: #16a34a;
  --secondary-700: #15803d;
  --secondary-800: #166534;
  --secondary-900: #14532d;
  
  /* Colores de acento */
  --accent-50: #fdf4ff;
  --accent-100: #fae8ff;
  --accent-200: #f5d0fe;
  --accent-300: #f0abfc;
  --accent-400: #e879f9;
  --accent-500: #d946ef;
  --accent-600: #c026d3;
  --accent-700: #a21caf;
  --accent-800: #86198f;
  --accent-900: #701a75;
  
  /* Grises */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Tipografía */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
  
  /* Tamaños de fuente */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  
  /* Espaciado */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Bordes y sombras */
  --border-radius-sm: 0.375rem;
  --border-radius: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  --border-radius-2xl: 1.5rem;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Transiciones */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

/* Modo oscuro - EduHack Theme */
.dark {
  --bg-primary: #13161c;
  --bg-secondary: var(--gray-800);
  --bg-tertiary: var(--gray-700);
  --text-primary: var(--gray-100);
  --text-secondary: var(--gray-300);
  --text-tertiary: var(--gray-400);
  --border-color: var(--gray-600);
  --navbar-bg: var(--gray-800);
  --sidebar-bg: var(--gray-800);
}

/* Modo claro - EduHack Theme */
:root:not(.dark) {
  --bg-primary: white;
  --bg-secondary: var(--gray-50);
  --bg-tertiary: var(--gray-100);
  --text-primary: var(--gray-900);
  --text-secondary: var(--gray-700);
  --text-tertiary: var(--gray-500);
  --border-color: var(--gray-200);
  --navbar-bg: white;
  --sidebar-bg: white;
}

/* Reset y base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-sans);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
  min-height: 100vh;
}

/* Layout consistente para todas las páginas */
.page-layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
  padding-top: 4rem; /* Espacio para navbar fijo */
}

.sidebar-layout .main-content {
  margin-left: 13rem; /* Espacio para sidebar */
  padding-left: 1.5rem;
}

@media (max-width: 768px) {
  .sidebar-layout .main-content {
    margin-left: 0;
    padding-left: 1rem;
  }
}

/* Componentes reutilizables */

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--border-radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary-600);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-700);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--secondary-600);
  color: white;
}

.btn-secondary:hover {
  background-color: var(--secondary-700);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
  background-color: var(--bg-secondary);
  border-color: var(--primary-500);
  color: var(--primary-600);
}

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

.btn-ghost:hover {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

/* Cards consistentes para EduHack */
.card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  overflow: hidden;
  position: relative;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px) scale(1.02);
  border-color: var(--primary-200);
}

.course-card, .route-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  overflow: hidden;
  position: relative;
}

.course-card:hover, .route-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-6px) scale(1.03);
  border-color: var(--primary-300);
}

.card-image {
  width: 100%;
  height: 12rem;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

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

.card-badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 10;
}

.wishlist-btn {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  background: rgba(255, 255, 255, 0.9);
  border: none;
  border-radius: 50%;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  z-index: 10;
}

.wishlist-btn:hover {
  background: white;
  transform: scale(1.1);
}

.wishlist-btn.active {
  background: var(--primary-600);
  color: white;
}

.card-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--border-color);
}

.card-body {
  padding: var(--space-6);
}

.card-footer {
  padding: var(--space-6);
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--border-radius);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary {
  background-color: var(--primary-100);
  color: var(--primary-800);
}

.badge-secondary {
  background-color: var(--secondary-100);
  color: var(--secondary-800);
}

.badge-accent {
  background-color: var(--accent-100);
  color: var(--accent-800);
}

.badge-success {
  background-color: var(--secondary-100);
  color: var(--secondary-800);
}

.badge-warning {
  background-color: #fef3c7;
  color: #92400e;
}

.badge-error {
  background-color: #fee2e2;
  color: #991b1b;
}

/* Inputs */
.input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.input:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgb(59 130 246 / 0.1);
}

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

/* Navegación consistente para EduHack */
.eduhack-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3.5rem;
  background-color: var(--navbar-bg);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  z-index: 50;
  transition: all var(--transition-normal);
}

.eduhack-logo {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--primary-600), var(--accent-600));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-decoration: none;
}

.eduhack-tagline {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-left: 0.5rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--primary-600);
  background-color: var(--primary-50);
  transform: translateY(-1px);
}

.nav-link.active {
  color: var(--primary-600);
  background-color: var(--primary-50);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-600), var(--secondary-600));
  border-radius: 2px;
}

/* Sidebar consistente */
.eduhack-sidebar {
  position: fixed;
  top: 3.5rem;
  left: 0;
  width: 13rem;
  height: calc(100vh - 3.5rem);
  background-color: var(--sidebar-bg);
  box-shadow: var(--shadow-md);
  padding: 1rem;
  overflow-y: auto;
  z-index: 40;
  transition: all var(--transition-normal);
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: all var(--transition-fast);
  margin: 0.25rem 0;
}

.sidebar-link:hover {
  color: var(--primary-600);
  background-color: var(--primary-50);
  transform: translateX(4px);
}

.sidebar-link.active {
  color: var(--primary-600);
  background-color: var(--primary-50);
  font-weight: 600;
  border-left: 4px solid var(--primary-600);
}

/* Grid system */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (min-width: 768px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* Navegación responsive */
.nav-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--primary-600);
  background-color: var(--primary-50);
  transform: translateY(-1px);
}

.nav-link.active {
  color: var(--primary-600);
  background-color: var(--primary-50);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-600), var(--secondary-600));
  border-radius: 2px;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
  margin: 0.25rem 0;
}

.mobile-nav-link:hover {
  color: var(--primary-600);
  background-color: var(--primary-50);
  transform: translateX(4px);
}

.mobile-nav-link.active {
  color: var(--primary-600);
  background-color: var(--primary-50);
  font-weight: 600;
  border-left: 4px solid var(--primary-600);
}

.nav-icon {
  font-size: 1.1rem;
  opacity: 0.8;
}

.nav-text {
  font-size: 0.9rem;
}

/* Búsqueda y filtros consistentes */
.search-container {
  position: relative;
  max-width: 28rem;
  margin: 0 auto;
}

.search-input {
  width: 100%;
  padding: 0.75rem 1rem;
  padding-right: 3rem;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--text-base);
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.search-input::placeholder {
  color: var(--text-tertiary);
}

.search-btn {
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  background: var(--primary-600);
  color: white;
  border: none;
  border-radius: var(--border-radius);
  padding: 0.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.search-btn:hover {
  background: var(--primary-700);
  transform: translateY(-50%) scale(1.05);
}

/* Filtros */
.filter-container {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  align-items: center;
  margin: 1.5rem 0;
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.filter-btn {
  padding: 0.5rem 1rem;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-xl);
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.filter-btn:hover {
  border-color: var(--primary-300);
  color: var(--primary-600);
  background: var(--primary-50);
  transform: translateY(-1px);
}

.filter-btn.active {
  background: var(--primary-600);
  color: white;
  border-color: var(--primary-600);
}

.filter-select {
  padding: 0.5rem 1rem;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-select:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

/* Grid de contenido */
.content-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  margin-top: 2rem;
}

@media (min-width: 768px) {
  .content-grid {
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  }
}

@media (min-width: 1024px) {
  .content-grid {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  }
}

/* Estados de carga y vacío */
.loading-state {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 3rem;
  color: var(--text-tertiary);
}

.empty-state {
  text-align: center;
  padding: 3rem;
  color: var(--text-tertiary);
}

.empty-state h3 {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.empty-state p {
  font-size: var(--text-base);
  margin-bottom: 1rem;
}

/* Animaciones y Transiciones */
@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

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

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

@keyframes ripple {
  0% {
    transform: scale(0);
    opacity: 1;
  }
  100% {
    transform: scale(4);
    opacity: 0;
  }
}

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

@keyframes glow {
  0%, 100% { box-shadow: 0 0 5px var(--primary-color); }
  50% { box-shadow: 0 0 20px var(--primary-color), 0 0 30px var(--primary-color); }
}

/* Clases de animación */
.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

.fade-in-left {
  animation: fadeInLeft 0.6s ease-out forwards;
}

.fade-in-right {
  animation: fadeInRight 0.6s ease-out forwards;
}

.scale-in {
  animation: scaleIn 0.4s ease-out forwards;
}

.shake {
  animation: shake 0.5s ease-in-out;
}

.pulse {
  animation: pulse 1s ease-in-out;
}

.float {
  animation: float 3s ease-in-out infinite;
}

.glow {
  animation: glow 2s ease-in-out infinite;
}

/* Estados de animación */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.animate-on-scroll.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.stagger-animation {
  opacity: 0;
  transform: translateY(20px);
}

/* Efecto ripple para botones */
.btn {
  position: relative;
  overflow: hidden;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  animation: ripple 0.6s linear;
  pointer-events: none;
}

/* Transiciones suaves para elementos interactivos */
.card, .course-card {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link {
  transition: all 0.2s ease;
}

.btn {
  transition: all 0.2s ease;
}

/* Transiciones de página */
body {
  transition: opacity 0.3s ease, transform 0.3s ease;
}

/* Parallax */
.parallax {
  will-change: transform;
}

/* Navegación con transición */
nav {
  transition: transform 0.3s ease;
}

/* Hover effects mejorados */
.card:hover, .course-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

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

.nav-link:hover {
  transform: translateY(-1px);
}

/* Animaciones de carga */
.loading-spinner {
  animation: spin 1s linear infinite;
}

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

/* Animaciones de progreso */
.progress-bar {
  transition: width 0.3s ease;
}

/* Efectos de focus mejorados */
.btn:focus, .form-input:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
  transform: scale(1.02);
}

/* Animaciones responsivas - reducir en dispositivos móviles */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Optimización de rendimiento */
.animate-on-scroll, .parallax, .card, .btn {
  will-change: transform, opacity;
}

.animate-on-scroll.animate-in {
  will-change: auto;
}

.animate-slide-down {
  animation: slideDown 0.3s ease-out;
}

.animate-slide-up {
  animation: slideUp 0.3s ease-out;
}

/* Breadcrumbs */
.breadcrumbs {
  backdrop-filter: blur(8px);
}

.breadcrumbs a {
  transition: color 0.2s ease;
}

.breadcrumbs a:hover {
  color: var(--primary-600);
}

/* Utilidades */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

.text-center {
  text-align: center;
}

.text-left { text-align: left; }
.text-right { text-align: right; }

.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }
.text-3xl { font-size: var(--text-3xl); }
.text-4xl { font-size: var(--text-4xl); }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }

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

.bg-primary { background-color: var(--bg-primary); }
.bg-secondary { background-color: var(--bg-secondary); }
.bg-tertiary { background-color: var(--bg-tertiary); }

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

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

.p-2 { padding: var(--space-2); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

.m-2 { margin: var(--space-2); }
.m-4 { margin: var(--space-4); }
.m-6 { margin: var(--space-6); }
.m-8 { margin: var(--space-8); }

.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

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

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

.animate-slide-in {
  animation: slideIn 0.4s ease-out;
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-3);
  }
  
  .btn {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
  }
  
  .card-body {
    padding: var(--space-4);
  }
  
  .search-input:focus {
    width: 100%;
  }
  
  .nav-text {
    font-size: 1rem;
  }
  
  .mobile-nav-link {
    padding: 1rem;
  }
}

/* Estados de carga */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* Accesibilidad */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus visible para mejor accesibilidad */
.focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

/* Scrollbar personalizada */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-400);
  border-radius: var(--border-radius);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-500);
}