/* =========================================
   KAIVORENN - PREMIUM UI/UX (SPA)
   ========================================= */

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

:root {
  --primary-black: #0B0B0B;
  --secondary-white: #FFFFFF;
  --accent-green: #1E4D2B;
  --bg-light: #F9F9FB;
  --text-dark: #1D1D1F;
  --text-gray: #86868B;
  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.08);
  --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  scroll-behavior: smooth;
  background-color: var(--secondary-white);
  color: var(--text-dark);
}

body {
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
}

/* --- NAVEGACIÓN --- */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 100;
  transition: var(--transition);
  background: rgba(11, 11, 11, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--secondary-white);
}

nav.scrolled {
  padding: 1rem 5%;
  background: rgba(255, 255, 255, 0.95);
  color: var(--primary-black);
  box-shadow: var(--shadow-sm);
}

.logo {
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
  cursor: pointer;
}

.nav-links a:hover {
  color: var(--accent-green);
}

.hamburger {
  display: none;
  cursor: pointer;
  font-size: 1.5rem;
}

/* --- SISTEMA DE VISTAS (SPA) --- */
.view {
  display: none; /* Oculta todas las vistas por defecto */
  opacity: 0;
}

.view.active {
  display: block; /* Muestra solo la vista activa */
  animation: viewFadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

/* --- HERO (INICIO) --- */
.hero {
  height: 100vh;
  background-color: var(--primary-black);
  color: var(--secondary-white);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 5%;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  letter-spacing: -2px;
  margin-bottom: 1rem;
}

.hero p {
  font-size: clamp(1rem, 2vw, 1.2rem);
  font-weight: 300;
  color: #A1A1A6;
  margin-bottom: 3rem;
}

.btn-primary {
  background-color: var(--secondary-white);
  color: var(--primary-black);
  padding: 1rem 2.5rem;
  border-radius: 30px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(255, 255, 255, 0.15);
}

/* --- SECCIONES GLOBALES --- */
.section-wrapper {
  padding: 8rem 5%;
  background-color: var(--bg-light);
  min-height: 100vh;
}

.products-wrapper {
  padding-top: 120px; /* Espacio extra para el menú en páginas de productos */
  padding-bottom: 8rem;
  padding-left: 5%;
  padding-right: 5%;
  background-color: var(--bg-light);
  min-height: 100vh;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 600;
  margin-bottom: 4rem;
  letter-spacing: -1px;
}

/* --- CUADRÍCULA 1: INICIO (3 COLUMNAS) --- */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

/* --- CUADRÍCULA 2: PRODUCTOS (2 COLUMNAS) --- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr); /* 2 Columnas exactas en escritorio */
  gap: 2rem;
  max-width: 1000px; /* Ligeramente más estrecho para elegancia */
  margin: 0 auto;
}

/* --- TARJETAS --- */
.card {
  background: var(--secondary-white);
  border-radius: 16px;
  padding: 2.5rem;
  transition: var(--transition);
  border: 1px solid rgba(0,0,0,0.03);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.nav-card {
  cursor: pointer;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.card-desc {
  color: var(--text-gray);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.card-link {
  color: var(--primary-black);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.nav-card:hover .card-link {
  color: var(--accent-green);
}

/* --- TARJETAS DE PRODUCTO --- */
.product-card {
  padding: 0;
  overflow: hidden;
}

.product-img {
  width: 100%;
  height: 300px;
  object-fit: contain;
  padding: 2rem;
  background-color: #fff;
  border-bottom: 1px solid rgba(0,0,0,0.03);
}

.product-info {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.opinion-badge {
  background-color: rgba(30, 77, 43, 0.05);
  color: var(--accent-green);
  padding: 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-style: italic;
  margin-bottom: 2rem;
  border-left: 3px solid var(--accent-green);
  line-height: 1.5;
}

.btn-accent {
  background-color: var(--accent-green);
  color: var(--secondary-white);
  padding: 1rem;
  border-radius: 8px;
  text-align: center;
  font-weight: 600;
  transition: var(--transition);
  margin-top: auto;
}

.btn-accent:hover {
  background-color: #14361e;
  transform: translateY(-2px);
}

/* --- FOOTER --- */
footer {
  background-color: var(--primary-black);
  color: var(--secondary-white);
  text-align: center;
  padding: 5rem 5% 2rem;
}

.footer-quote {
  font-size: 1.5rem;
  font-weight: 300;
  margin-bottom: 3rem;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 3rem;
}

.social-links a {
  color: #A1A1A6;
  font-size: 0.9rem;
  transition: var(--transition);
}

.social-links a:hover {
  color: var(--secondary-white);
}

.copyright {
  color: #555;
  font-size: 0.8rem;
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .products-grid {
    grid-template-columns: 1fr; /* Productos a 1 columna en móvil */
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--primary-black);
    flex-direction: column;
    align-items: center;
    padding: 2rem 0;
    gap: 1.5rem;
    transform: translateY(-150%);
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
  }
  
  nav.scrolled .nav-links {
    background: var(--secondary-white);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
  }

  .hamburger {
    display: block;
  }
}