/* ==========================================================================
   CSS CRÍTICO OPTIMIZADO - Bajaj Carrera Motos
   Estilos esenciales para contenido above-the-fold
   Tamaño objetivo: < 14KB para carga inmediata
   ========================================================================== */

/* Variables CSS críticas */
:root {
  --clr-primary: #e02b20;
  --clr-primary-hover: #c71e15;
  --clr-secondary: #00204A;
  --clr-accent: #f39c12;
  --text-dark: #333;
  --text-light: #fff;
  --background-light: #fff;
  --font-main: 'Montserrat', system-ui, -apple-system, sans-serif;
  --font-heading: 'Montserrat', system-ui, -apple-system, sans-serif;
  --container-max-width: 1600px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 8px rgba(0,0,0,0.15);
  --transition-normal: 0.3s ease;
  --transition-fast: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  font-display: optional;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--background-light);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Prevenir layout shift en fuentes */
body.fonts-loading {
  visibility: hidden;
}

body.fonts-loaded {
  visibility: visible;
  opacity: 1;
  transition: opacity 0.3s ease;
}

/* Tipografía crítica */
h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--text-dark);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 2rem); }

/* Enlaces críticos */
a {
  color: var(--clr-primary);
  text-decoration: none;
  transition: color var(--transition-normal);
}

a:hover, a:focus {
  color: var(--clr-primary-hover);
  outline: 2px solid var(--clr-accent);
  outline-offset: 2px;
}

/* Contenedores críticos */
.container {
  width: 100%;
  max-width: 100vw;
  margin: 0 auto;
  padding: 0 var(--spacing-xs);
}

.section-container {
  width: 100%;
  max-width: 100vw;
  margin: 0 auto;
  padding: 0 var(--spacing-xs);
}

/* Skip link para accesibilidad */
.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
  z-index: 100;
  background: var(--background-light);
  color: var(--clr-primary);
  padding: 1em;
  text-decoration: none;
}

.skip-link:focus {
  left: 0;
  top: 0;
  width: auto;
  height: auto;
}

/* ===== NAVBAR CRÍTICO ===== */
.navbar-pc {
  background-color: #fff;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  min-height: 80px;
  width: 100%;
  max-width: 100vw;
}

/* Banner header optimizado */
.banner-header {
  width: 100%;
  max-width: 100vw;
  overflow: hidden;
  position: relative;
  z-index: 10; /* Aumentar z-index para asegurar visibilidad */
  transition: max-height 0.3s ease;
  display: block; /* Asegurar que es visible */
  visibility: visible !important;
  opacity: 1 !important;
}

.banner-header picture {
  width: 100%;
  display: block;
  visibility: visible !important;
}

.banner-img {
  width: 100%;
  height: auto;
  display: block !important;
  max-width: 100%;
  transition: opacity 0.3s ease;
  will-change: transform;
  transform: translateZ(0); /* Optimización para rendimiento */
  visibility: visible !important;
  opacity: 1 !important;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  width: 100%;
  max-width: 100%;
}

/* Navbar Brand & Logo */
.navbar-brand {
  display: flex !important;
  align-items: center;
  visibility: visible !important;
}

.logo {
  display: flex !important;
  align-items: center;
  height: 100%;
  text-decoration: none;
  visibility: visible !important;
}

.logo-img {
  height: 45px !important;
  width: auto !important;
  max-width: 200px !important;
  display: block !important;
  visibility: visible !important;
  opacity: 1 !important;
}

/* Navegación principal */
.navbar-inner ul.navbar {
  display: flex !important;
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
}

.navbar-inner ul.navbar > li {
  position: relative;
  margin: 0 10px;
}

.navbar-inner ul.navbar > li > a {
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 500;
  padding: 10px 15px;
  display: block;
  transition: color var(--transition-fast);
}

.navbar-inner ul.navbar > li > a:hover {
  color: var(--clr-primary);
}

/* Menú móvil */
.menu-movil {
  display: none;
  margin-left: auto;
  background: none;
  border: none;
  color: var(--text-dark);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 10px;
}

/* ===== FEATURES SECTION CRÍTICO ===== */
.features-section {
  padding: var(--spacing-xl) 0;
  background: #f8f9fa;
}

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

.feature-item {
  background: var(--background-light);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.feature-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  margin-bottom: var(--spacing-md);
}

.feature-content h2 {
  color: var(--clr-secondary);
  font-size: 1.25rem;
  margin: 0;
}

/* ===== IMÁGENES OPTIMIZADAS ===== */
img {
  max-width: 100%;
  height: auto;
  transition: opacity var(--transition-normal);
}



img.loaded {
  opacity: 1;
}

/* Contenedores de imágenes con aspect ratio */
.product-image {
  aspect-ratio: 3/2;
  overflow: hidden;
  background: #f5f5f5;
  position: relative;
  border-radius: var(--border-radius-md);
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== RESPONSIVE DESIGN ===== */

/* Desktop */
@media (min-width: 1024px) {
  .navbar-pc {
    padding: 0.5rem 2rem;
  }
  
  .navbar-inner {
    padding: 0 2rem;
  }
  
  .navbar-brand {
    min-height: 60px;
    margin-right: 60px;
  }
  
  .logo-img {
    height: 50px;
    max-width: 200px;
  }
  
  .section-container {
    width: 95%;
    max-width: 1600px;
    padding: 0;
  }
}

/* Tablet */
@media (min-width: 768px) and (max-width: 1023px) {
  .navbar-brand {
    min-height: 55px;
    margin-right: 30px;
  }
  
  .logo-img {
    height: 42px;
    max-width: 180px;
  }
}

/* Mobile */
@media (max-width: 1023px) {
  .navbar-inner ul.navbar {
    display: none;
  }
  
  .menu-movil {
    display: block;
  }
  
  .navbar-brand {
    min-height: 50px;
    padding: 8px 0;
    margin-right: 20px;
  }
  
  .logo-img {
    height: 40px;
    max-width: 160px;
  }
  
  .hero {
    min-height: 60vh;
    min-height: 60dvh;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

/* Small mobile */
@media (max-width: 480px) {
  .navbar-brand {
    min-height: 45px;
    padding: 10px 0;
  }
  
  .logo-img {
    height: 35px;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero-cta {
    padding: 0.6rem 1.5rem;
    font-size: 0.9rem;
  }
  
  .features-grid {
    gap: var(--spacing-sm);
  }
  
  .feature-item {
    padding: var(--spacing-md);
  }
}

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

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateZ(0);
  }
  to {
    opacity: 1;
    transform: scale(1) translateZ(0);
  }
}

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

.slide-up {
  animation: slideUp 0.8s ease forwards;
}

.scale-in {
  animation: scaleIn 0.5s ease forwards;
}

/* Reducir animaciones si el usuario lo prefiere */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* ===== OPTIMIZACIONES DE RENDIMIENTO ===== */
/* Force hardware acceleration para elementos críticos */
.navbar-pc, .hero, .feature-item {
  transform: translateZ(0);
  will-change: auto;
}

/* Optimizar transiciones para GPU */
.logo-img, .hero-cta, .feature-item {
  will-change: transform, opacity;
}

.logo-img:hover, .hero-cta:hover, .feature-item:hover {
  will-change: auto;
}

/* Menú móvil crítico */
.navbar-movil {
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  width: 100%;
  max-width: 100vw;
  background: #fff;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  z-index: 999;
  max-height: calc(100vh - 80px);
  overflow-y: auto;
  display: none;
}

.navbar-movil.show {
  display: block !important;
  width: 100% !important;
  left: 0 !important;
  right: 0 !important;
}

.navbar-movil ul {
  list-style: none;
  margin: 0;
  padding: 1rem;
  width: 100%;
}

.navbar-movil li {
  border-bottom: 1px solid rgba(0,0,0,0.05);
  width: 100%;
}

.navbar-movil a {
  display: block;
  padding: 1rem;
  color: #333;
  text-decoration: none;
  width: 100%;
}

/* Prevenir scroll cuando el menú está abierto */
body.menu-open {
  overflow: hidden !important;
}

/* Hero section crítico */
.hero-section {
  padding-top: 100px;
  text-align: center;
}

.hero-section h1 {
  margin-bottom: 1rem;
}

/* Hero superpuesto sobre el banner */
.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center; /* Centrado por defecto para móvil */
  padding: 0 var(--spacing-lg);
  z-index: 2;
  background: linear-gradient(90deg, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.5) 50%, rgba(0,0,0,0.3) 100%);
  color: var(--text-light);
  visibility: visible !important;
  opacity: 1 !important;
  text-align: center; /* Centrado por defecto para móvil */
}

.hero-overlay .container {
  max-width: 600px;
  padding: var(--spacing-lg);
  background-color: rgba(0,0,0,0.6);
  border-radius: var(--border-radius-md);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-overlay h1 {
  font-size: 2.5rem;
  line-height: 1.2;
  margin: 0;
  font-weight: 700;
  color: var(--text-light);
  text-shadow: 2px 2px 4px rgba(0,0,0,0.7);
}

.hero-overlay p {
  font-size: 1.2rem;
  margin: var(--spacing-md) 0;
  color: var(--text-light);
  text-shadow: 1px 1px 2px rgba(0,0,0,0.7);
}

.hero-overlay .hero-cta {
  display: inline-block;
  padding: 0.75rem 2rem;
  background: var(--clr-primary);
  color: var(--text-light);
  border: none;
  border-radius: var(--border-radius-md);
  font-weight: 600;
  text-transform: uppercase;
  text-align: center;
  transition: all var(--transition-normal);
  margin-top: var(--spacing-md);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.hero-overlay .hero-cta:hover {
  background: var(--clr-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(224, 43, 32, 0.4);
  text-decoration: none;
  color: var(--text-light);
}

/* Ajustes responsive para el hero overlay */
@media (min-width: 768px) {
  .hero-overlay {
    justify-content: flex-start;
    text-align: left;
    background: linear-gradient(90deg, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.5) 50%, rgba(0,0,0,0.1) 100%);
  }
  
  .hero-overlay .container {
    margin-left: 5%;
  }
}

@media (max-width: 767px) {
  .hero-overlay .container {
    padding: var(--spacing-md);
    width: 90%;
    max-width: 90%;
  }
  
  .hero-overlay h1 {
    font-size: 1.8rem;
  }
  
  .hero-overlay p {
    font-size: 1rem;
  }
  
  .hero-overlay .hero-cta {
    padding: 0.6rem 1.5rem;
    font-size: 0.9rem;
  }
}