/* ==========================================================================
   COOPEANDE - SISTEMA DE DISEÑO Y ESTILOS BASE (main.css)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. VARIABLES DEL SISTEMA DE DISEÑO (CSS CUSTOM PROPERTIES)
   -------------------------------------------------------------------------- */
:root {
  /* Paleta de Colores Primaria */
  --color-primary-600: #006847;       /* Verde Esmeralda Institucional */
  --color-primary-700: #004D34;       /* Verde Oscuro Profundo */
  --color-primary-500: #0A8754;       /* Verde Crecimiento */
  --color-primary-100: #E6F4EE;       /* Verde Suave Fondo */
  --color-primary-50:  #F0F9F5;       /* Verde Sutil Tint */

  /* Paleta Secundaria / Corporativa */
  --color-navy-900: #0B2545;          /* Azul Marino Profundo (Confianza) */
  --color-navy-800: #133A68;          /* Azul Marino Secundario */
  --color-navy-100: #E8EEF5;          /* Azul Suave */

  /* Colores de Acento */
  --color-accent-500: #D4AF37;        /* Dorado Cálido / Ámbar */
  --color-accent-600: #B89528;        /* Dorado Oscuro */
  --color-accent-100: #FFF9E6;        /* Dorado Fondo Suave */

  /* Colores Funcionales / Estado */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error:   #EF4444;
  --color-info:    #3B82F6;

  /* Escala Neutral */
  --color-gray-900: #0F172A;          /* Texto Oscuro */
  --color-gray-800: #1E293B;          /* Texto Secundario Oscuro */
  --color-gray-700: #334155;          /* Subtítulos */
  --color-gray-600: #475569;          /* Cuerpo de Texto */
  --color-gray-500: #64748B;          /* Texto Apagado */
  --color-gray-400: #94A3B8;          /* Bordes Neutros */
  --color-gray-300: #CBD5E1;          /* Deshabilitados */
  --color-gray-200: #E2E8F0;          /* Líneas divisorias */
  --color-gray-100: #F1F5F9;          /* Tarjetas Neutras */
  --color-gray-50:  #F8FAFC;          /* Fondo Principal */
  --color-white:    #FFFFFF;

  /* Tipografía */
  --font-family-base: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-family-heading: 'Plus Jakarta Sans', var(--font-family-base);

  /* Tamaños de Fuente (Escala Modular 1.2) */
  --font-size-xs:   0.75rem;    /* 12px */
  --font-size-sm:   0.875rem;   /* 14px */
  --font-size-base: 1rem;       /* 16px */
  --font-size-lg:   1.125rem;   /* 18px */
  --font-size-xl:   1.25rem;    /* 20px */
  --font-size-2xl:  1.5rem;     /* 24px */
  --font-size-3xl:  1.875rem;   /* 30px */
  --font-size-4xl:  2.25rem;    /* 36px */
  --font-size-5xl:  3rem;       /* 48px */

  /* Pesos de Fuente */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Espaciado */
  --spacing-1: 0.25rem;  /* 4px */
  --spacing-2: 0.5rem;   /* 8px */
  --spacing-3: 0.75rem;  /* 12px */
  --spacing-4: 1rem;     /* 16px */
  --spacing-5: 1.25rem;  /* 20px */
  --spacing-6: 1.5rem;   /* 24px */
  --spacing-8: 2rem;     /* 32px */
  --spacing-10: 2.5rem;  /* 40px */
  --spacing-12: 3rem;    /* 48px */
  --spacing-16: 4rem;    /* 64px */
  --spacing-20: 5rem;    /* 80px */

  /* Sombras (Elevation) */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --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);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);

  /* Radios de Borde */
  --radius-sm: 0.375rem;  /* 6px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --radius-2xl: 1.5rem;   /* 24px */
  --radius-full: 9999px;

  /* Transiciones */
  --transition-fast: all 0.15s ease-in-out;
  --transition-normal: all 0.25s ease-in-out;
  --transition-slow: all 0.35s ease-in-out;

  /* Anchos de Contenedor */
  --container-max-width: 1240px;
}

/* --------------------------------------------------------------------------
   2. RESET DE CSS Y BOX-SIZING
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-gray-800);
  background-color: var(--color-gray-50);
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Accesibilidad Focus Visible */
:focus-visible {
  outline: 3px solid var(--color-accent-500);
  outline-offset: 2px;
}

/* Media Queries Accesibilidad: Movimiento Reducido */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* --------------------------------------------------------------------------
   3. TIPOGRAFÍA Y ELEMENTOS DE TEXTO
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  color: var(--color-navy-900);
  font-weight: var(--font-weight-bold);
  line-height: 1.25;
  margin-bottom: var(--spacing-4);
}

h1 { font-size: var(--font-size-4xl); letter-spacing: -0.025em; }
h2 { font-size: var(--font-size-3xl); letter-spacing: -0.02em; }
h3 { font-size: var(--font-size-2xl); letter-spacing: -0.015em; }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--spacing-4);
  color: var(--color-gray-700);
}

p.lead {
  font-size: var(--font-size-lg);
  line-height: 1.7;
  color: var(--color-gray-700);
}

a {
  color: var(--color-primary-600);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--color-primary-700);
}

ul, ol {
  list-style: none;
}

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

/* --------------------------------------------------------------------------
   4. ESTRUCTURA DE CONTENEDOR Y MAQUETACIÓN
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-6);
  padding-right: var(--spacing-6);
}

.section {
  padding-top: var(--spacing-16);
  padding-bottom: var(--spacing-16);
}

.section-alt {
  background-color: var(--color-white);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--spacing-12) auto;
}

.section-subtitle {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary-600);
  background-color: var(--color-primary-100);
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-3);
}

.section-title {
  margin-bottom: var(--spacing-3);
}

.section-description {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
}

/* Layout Grids */
.grid {
  display: grid;
  gap: var(--spacing-8);
}

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

/* Flex utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }

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