:root {
  /* Paleta de colores premium */
  --bg-primary: #fafbfc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f5f7fa;
  --bg-elevated: #eef2f6;
  --bg-hover: #e8ecf1;

  --text-primary: #1a202c;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --text-light: #a0aec0;

  --border-light: rgba(26, 32, 44, 0.06);
  --border-medium: rgba(26, 32, 44, 0.1);
  --border-strong: rgba(26, 32, 44, 0.15);

  /* Acentos premium */
  --accent-primary: #2563eb;
  --accent-primary-dark: #1e40af;
  --accent-primary-light: #3b82f6;
  --accent-secondary: #7c3aed;
  --accent-success: #059669;
  --accent-warning: #d97706;
  --accent-danger: #dc2626;
  --accent-info: #0891b2;

  --whatsapp: #25d366;

  /* Gradientes premium */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-header: linear-gradient(135deg, #1e3a8a 0%, #7c3aed 50%, #be185d 100%);
  --gradient-card: linear-gradient(to bottom, #ffffff 0%, #fafbfc 100%);

  /* Sombras profesionales en capas */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.04), 0 1px 2px 0 rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.12);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.04);

  /* Espaciado preciso */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Bordes redondeados */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transiciones premium */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  background: linear-gradient(to bottom right, #fafbfc 0%, #f5f7fa 50%, #eef2f6 100%);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 300px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.03) 0%, rgba(124, 58, 237, 0.03) 100%);
  pointer-events: none;
  z-index: 0;
}