/* =========================================
   VARIABLES Y CONFIGURACIÓN GLOBAL
   ========================================= */
:root {
  /* Paleta de colores Ecoensol */
  --color-primary: #7ec572;
  --color-secondary-blue: #74a2d6;
  --color-secondary-yellow: #eecb6c;
  --color-bg-light: #fffafb;
  --color-text-dark: #3b341f;
  --color-white: #ffffff;
  
  /* Tipografía: Myriad Pro con fallbacks seguros del sistema */
  --font-main: 'Myriad Pro', 'Myriad', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  
  /* Espaciado y dimensiones */
  --container-width: 1200px;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --border-radius: 8px;
  --shadow: 0 4px 6px rgba(59, 52, 31, 0.1);
  --transition: all 0.3s ease;
}

/* Reset básico */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  color: var(--color-text-dark);
  background-color: var(--color-bg-light);
  line-height: 1.6;
  font-size: 16px;
}

/* Utilidades */
.container {
  width: 90%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--spacing-md) 0;
}
.text-center { text-align: center; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* Tipografía */
h1, h2, h3 { line-height: 1.2; margin-bottom: var(--spacing-sm); color: var(--color-text-dark); }
h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); color: var(--color-primary); }
h3 { font-size: 1.25rem; font-weight: 600; }
p { margin-bottom: var(--spacing-sm); }

/* Botones mejorados */
.btn {
  display: inline-block;
  padding: 0.8rem 1.8rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-dark);
}
.btn-primary:hover {
  background-color: #6ab05e;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.btn-secondary {
  background-color: var(--color-secondary-blue);
  color: var(--color-white);
}
.btn-secondary:hover {
  background-color: #5a8bc0;
  transform: translateY(-2px);
}

/* =========================================
   HEADER & NAVEGACIÓN
   ========================================= */
header {
  background-color: var(--color-white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  max-width: var(--container-width);
  margin: 0 auto;
}
.logo img {
  height: 46px; /* Tamaño original del logo */
  width: auto;
}
.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}
.nav-menu a {
  text-decoration: none;
  color: var(--color-text-dark);
  font-weight: 600;
  transition: var(--transition);
}
.nav-menu a:hover, .nav-menu a.active {
  color: var(--color-primary);
}

/* =========================================
   SECCIONES COMUNES
   ========================================= */
.hero {
  background-size: cover;
  background-position: center;
  background-color: var(--color-text-dark); /* Fallback */
  color: var(--color-white);
  padding: var(--spacing-lg) 5%;
  text-align: center;
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.hero h1 { color: var(--color-white); text-shadow: 0 2px 4px rgba(0,0,0,0.5); }
.hero p { font-size: 1.2rem; max-width: 700px; margin-bottom: var(--spacing-md); }

.section { padding: var(--spacing-lg) 0; }
.section-alt { background-color: var(--color-white); }

/* Grid de Servicios */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}
.service-card {
  background: var(--color-bg-light);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  border-top: 4px solid var(--color-primary);
  transition: var(--transition);
}
.service-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.service-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-sm);
}

/* Listas de características */
.feature-list { list-style: none; margin: var(--spacing-md) 0; }
.feature-list li {
  padding-left: 1.5rem;
  position: relative;
  margin-bottom: 0.8rem;
}
.feature-list li::before {
  content: "✓";
  color: var(--color-primary);
  font-weight: bold;
  position: absolute;
  left: 0;
}

/* =========================================
   CONTACTO & FOOTER
   ========================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  align-items: start;
}
.map-container iframe {
  width: 100%;
  height: 350px;
  border: 0;
  border-radius: var(--border-radius);
}
.social-links { display: flex; gap: 1rem; margin-top: 1rem; }
.social-links a {
  color: var(--color-secondary-blue);
  font-size: 1.5rem;
  text-decoration: none;
  transition: var(--transition);
}
.social-links a:hover { color: var(--color-primary); }

footer {
  background-color: var(--color-text-dark);
  color: var(--color-bg-light);
  text-align: center;
  padding: var(--spacing-md) 0;
  margin-top: var(--spacing-lg);
}
footer a { color: var(--color-secondary-yellow); text-decoration: none; }

/* =========================================
   RESPONSIVE (Mobile First adjustments)
   ========================================= */
@media (max-width: 768px) {
  .nav-menu { display: none; } /* En una versión completa agregaríamos un toggle JS */
  .contact-grid { grid-template-columns: 1fr; }
  .hero { min-height: 50vh; padding: var(--spacing-md) 5%; }
}