/**
 * ACOFUBEN.org - Sistema de Diseño
 * Adaptado del Design System de DV-AQUA
 * Paleta de colores: Verde (vida), Azul (agua), Café (tierra), Crema (neutral)
 */

:root {
  /* ===== COLORES ACOFUBEN ===== */

  /* Verde - Primary (vida, naturaleza) */
  --color-primary-50: #e8f5e9;
  --color-primary-100: #c8e6c9;
  --color-primary-200: #a5d6a7;
  --color-primary-300: #81c784;
  --color-primary-400: #66bb6a;
  --color-primary-500: #1B5E20; /* Verde principal ACOFUBEN */
  --color-primary-600: #155518;
  --color-primary-700: #104410;
  --color-primary-800: #0c330c;
  --color-primary-900: #082208;

  /* Azul - Secondary (agua) */
  --color-secondary-50: #e1f5fe;
  --color-secondary-100: #b3e5fc;
  --color-secondary-200: #81d4fa;
  --color-secondary-300: #4fc3f7;
  --color-secondary-400: #29b6f6;
  --color-secondary-500: #0277BD; /* Azul principal ACOFUBEN */
  --color-secondary-600: #01579B;
  --color-secondary-700: #014a82;
  --color-secondary-800: #013d69;
  --color-secondary-900: #003050;

  /* Café - Accent (tierra) */
  --color-accent-50: #efebe9;
  --color-accent-100: #d7ccc8;
  --color-accent-200: #bcaaa4;
  --color-accent-300: #a1887f;
  --color-accent-400: #8d6e63;
  --color-accent-500: #5D4037; /* Café principal ACOFUBEN */
  --color-accent-600: #4E342E;
  --color-accent-700: #3e2723;
  --color-accent-800: #2e1d1a;
  --color-accent-900: #1e1311;

  /* Crema - Neutral Backgrounds */
  --color-neutral-50: #F5F5DC; /* Crema ACOFUBEN */
  --color-neutral-100: #fafaf8;
  --color-neutral-200: #f5f5f0;
  --color-neutral-300: #e8e8e0;

  /* Gray Scale (del sistema DV-AQUA) */
  --color-gray-50: #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #cbd5e1;
  --color-gray-400: #94a3b8;
  --color-gray-500: #64748b;
  --color-gray-600: #475569;
  --color-gray-700: #334155;
  --color-gray-800: #1e293b;
  --color-gray-900: #0f172a;

  /* Semantic Colors */
  --color-success-500: #22c55e;
  --color-success-600: #16a34a;

  --color-warning-500: #f59e0b;
  --color-warning-600: #d97706;

  --color-danger-500: #ef4444;
  --color-danger-600: #dc2626;

  --color-info-500: #0ea5e9;
  --color-info-600: #0284c7;

  /* ===== TIPOGRAFÍA ===== */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;

  /* ===== ESPACIADO ===== */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* ===== SOMBRAS ===== */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);

  /* ===== TRANSICIONES ===== */
  --duration-fast: 150ms;
  --duration-normal: 200ms;
  --duration-slow: 300ms;
}

/* ===== RESET Y BASE ===== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  color: var(--color-gray-800);
  line-height: 1.6;
  background-color: var(--color-neutral-50);
}

/* ===== UTILIDADES CUSTOM ===== */

.bg-primary {
  background-color: var(--color-primary-500);
}

.bg-secondary {
  background-color: var(--color-secondary-500);
}

.bg-accent {
  background-color: var(--color-accent-500);
}

.text-primary {
  color: var(--color-primary-500);
}

.text-secondary {
  color: var(--color-secondary-500);
}

.text-accent {
  color: var(--color-accent-500);
}

.btn-primary {
  background-color: var(--color-primary-500);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  transition: all var(--duration-normal);
  border: none;
  cursor: pointer;
  display: inline-block;
  text-decoration: none;
}

.btn-primary:hover {
  background-color: var(--color-primary-600);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: var(--color-secondary-500);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  transition: all var(--duration-normal);
  border: none;
  cursor: pointer;
  display: inline-block;
  text-decoration: none;
}

.btn-secondary:hover {
  background-color: var(--color-secondary-600);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary-500);
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  transition: all var(--duration-normal);
  border: 2px solid var(--color-primary-500);
  cursor: pointer;
  display: inline-block;
  text-decoration: none;
}

.btn-outline:hover {
  background-color: var(--color-primary-500);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card {
  background: white;
  border-radius: 1rem;
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  transition: all var(--duration-normal);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: var(--space-4);
  line-height: 1.2;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-gray-600);
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

/* ===== NAVEGACIÓN ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: white;
  box-shadow: var(--shadow-sm);
  padding: var(--space-4) 0;
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

/* ===== HERO SECTION ===== */
.hero {
  background: linear-gradient(135deg, var(--color-primary-700), var(--color-secondary-600));
  color: white;
  padding: var(--space-20) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><path d="M0 50 Q 25 25 50 50 T 100 50" stroke="rgba(255,255,255,0.1)" fill="none"/></svg>');
  opacity: 0.1;
}

/* ===== ANIMACIONES ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

/* ===== TIMELINE ===== */
.timeline-item {
  position: relative;
  padding-left: var(--space-8);
  padding-bottom: var(--space-8);
  border-left: 3px solid var(--color-primary-500);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -0.75rem;
  top: 0;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--color-primary-500);
  border-radius: 50%;
  border: 4px solid white;
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.timeline-item:last-child {
  border-left-color: transparent;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .section-title {
    font-size: 2rem;
  }

  .hero {
    padding: var(--space-12) 0;
  }
}