/* ==========================================================================
   VARIABLES Y TOKENS DE DISEÑO - REVERSE NET
   ========================================================================== */
:root {
  /* Paleta de Colores - Modo Claro (Premium Oscuro/Dorado) */
  --color-primary: #111111;
  --color-primary-light: #2A2A2A;
  --color-secondary: #D4AF37; /* Dorado Premium */
  --color-secondary-hover: #F3C945;
  --color-accent: #E53935; /* Acento para llamadas a la acción críticas */
  
  --color-bg: #FAFAFA;
  --color-surface: #FFFFFF;
  --color-surface-hover: #F0F0F0;
  
  --color-text: #333333;
  --color-text-muted: #666666;
  --color-border: #E0E0E0;
  
  --color-btn-text: #FFFFFF;
  --color-btn-text-secondary: #111111;

  /* Tipografía */
  --font-heading: 'Playfair Display', serif;
  --font-body: 'Inter', sans-serif;
  
  /* Tamaños Tipográficos (Escala Modular) */
  --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: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.5rem;
  --text-6xl: 4.5rem;

  /* Espaciado */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-24: 6rem;

  /* Bordes y Sombras */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  
  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-blur: blur(12px);
  
  /* Transiciones */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Modo Oscuro (Data-Theme) */
[data-theme="dark"] {
  --color-bg: #0A0A0A;
  --color-surface: #171717;
  --color-surface-hover: #262626;
  
  --color-text: #F5F5F5;
  --color-text-muted: #A3A3A3;
  --color-border: #333333;
  
  --color-btn-text: #0A0A0A;
  --color-btn-text-secondary: #F5F5F5;
  
  --glass-bg: rgba(23, 23, 23, 0.7);
  --glass-border: rgba(255, 255, 255, 0.05);
}

/* ==========================================================================
   RESETS Y ESTILOS BASE
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-4);
  color: var(--color-primary);
}

[data-theme="dark"] h1, 
[data-theme="dark"] h2, 
[data-theme="dark"] h3, 
[data-theme="dark"] h4, 
[data-theme="dark"] h5, 
[data-theme="dark"] h6 {
  color: var(--color-secondary);
}

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

ul, ol {
  list-style: none;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

button, input, select, textarea {
  font-family: inherit;
  color: inherit;
}

/* ==========================================================================
   UTILIDADES (LAYOUT & GRID)
   ========================================================================== */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.section {
  padding: var(--spacing-24) 0;
}

.grid {
  display: grid;
  gap: var(--spacing-8);
}

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

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }

.text-center { text-align: center; }
.mt-8 { margin-top: var(--spacing-8); }
.mb-8 { margin-bottom: var(--spacing-8); }

/* ==========================================================================
   COMPONENTES
   ========================================================================== */

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3) var(--spacing-8);
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  font-size: var(--text-base);
  gap: var(--spacing-2);
}

.btn-primary {
  background-color: var(--color-secondary);
  color: var(--color-btn-text);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: var(--color-secondary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

/* Header & Navegación */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  transition: all var(--transition-normal);
  padding: var(--spacing-4) 0;
}

.header.scrolled {
  padding: var(--spacing-2) 0;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

[data-theme="dark"] .logo {
  color: var(--color-secondary);
}

.logo span {
  color: var(--color-secondary);
}

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

.nav-link {
  font-weight: 500;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-text);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-secondary);
  transition: width var(--transition-fast);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
  font-size: var(--text-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2);
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--color-surface-hover);
}

/* Breadcrumbs */
.breadcrumb {
  display: flex;
  gap: var(--spacing-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-8);
}
.breadcrumb a:hover {
  color: var(--color-secondary);
}

/* Footer Premium */
.footer {
  background-color: var(--color-primary);
  color: var(--color-surface);
  padding: var(--spacing-16) 0 var(--spacing-8);
  margin-top: auto;
}

[data-theme="dark"] .footer {
  background-color: #050505;
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-12);
}

.footer-brand p {
  color: #A0A0A0;
  margin-top: var(--spacing-4);
  max-width: 300px;
}

.footer-title {
  color: var(--color-surface);
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-6);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.footer-links a {
  color: #A0A0A0;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-secondary);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--spacing-8);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #A0A0A0;
  font-size: var(--text-sm);
}

/* Cards Generales */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-8);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-secondary);
}

.card-icon {
  width: 48px;
  height: 48px;
  background-color: rgba(212, 175, 55, 0.1);
  color: var(--color-secondary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  margin-bottom: var(--spacing-4);
}