:root {
  --color-red: #37667b;
  --color-black_blog-card: #060d1b;
  --color-red-bajo: #e2f2f8;
  --color-black: #0a1524;
  --color-white: #fff;
  --font-main: 'Poppins', sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-size: 1.0em; /* 👈 aquí defines el tamaño base */
}

body {
  font-family: var(--font-main);
  color: var(--color-black);
  background:var(--color-white);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ————— HEADER / NAVBAR ————— */
header {
  font-size: 10px;  /* 👈 aquí defines el tamaño base */
  background: var(--color-black);
  color: var(--color-white);
  padding: 15px 20px;
}
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}
.logo img {
  height: 50px;
}

/* Menú principal */
nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
  position: relative;
}
nav ul.show {
  display: flex; /* al hacer click en la hamburguesa */
}
.menu-toggle {
  display: none;
  font-size: 28px;
  cursor: pointer;
  color: var(--color-white);
  margin-left: auto;
}

/* Links */
nav ul li {
  position: relative; /* para el sub-menú */
}
nav ul li a {
  color: var(--color-white);
  text-decoration: none;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: color 0.3s;
}
nav ul li a:hover {
  color: var(--color-red);
}

/* Flecha de dropdown */
.dropdown-arrow {
  font-size: 0.7rem;
  transition: transform 0.2s;
}

/* Sub-menú (desktop) */
nav ul li .submenu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-black);
  list-style: none;
  min-width: 180px;
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  overflow: hidden;
  z-index: 1000;
}
nav ul li .submenu li a {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--color-white);
  font-weight: 500;
}
nav ul li .submenu li a:hover {
  background: #333;
  color: var(--color-red);
}

/* Mostrar sub-menú on hover (desktop) */
@media (min-width: 769px) {
  nav ul li:hover > .submenu {
    display: block;
  }
  nav ul li:hover > a .dropdown-arrow {
    transform: rotate(180deg);
  }
}

/* ————— MOBILE ————— */
@media (max-width: 768px) {
  /* Toggle hamburgesa */
  .menu-toggle {
    display: block;
  }
  /* Menú principal oculto por defecto */
  nav ul {
    display: none;
    flex-direction: column;
    background: var(--color-black);
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    z-index: 1000;
  }
  /* Sub-menú siempre ‘display: block’ pero colapsado */
  nav ul li .submenu {
    position: relative;
    background: none;
    box-shadow: none;
    top: 0; left: 0;
    display: block;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding-left: 1.5rem;
  }
  /* Cuando hacemos click: expandimos */
  nav ul li.show-sub > .submenu {
    max-height: 500px; /* ajusta si hace falta */
  }
  /* Flecha gira al abrir */
  nav ul li.show-sub > a .dropdown-arrow {
    transform: rotate(180deg);
  }
  /* En móvil, desactivar hover para el submenú */
  nav ul li:hover > .submenu {
    display: block; /* pero no cambia nada, porque manejamos con JS */
  }
}
  
/* ————— RESTO DE ESTILOS (Ejemplos) ————— */

.hero {
  text-align: center;
  padding: 30px 20px;
}
.hero .portada {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  margin-bottom: 20px;
}
.hero-text h1 {
  font-size: 2rem;
  margin-bottom: 10px;
}
.hero-text p {
  font-size: 1rem;
}

/* CTA Cards */
.cta-cards {
  display: flex;
  gap: 20px;
  justify-content: center;
  padding: 40px 20px;
  flex-wrap: wrap;
}
.card {
  background: var(--color-white);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  color: var(--color-black);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  transition: transform 0.2s;
  width: 280px;
}
.card i {
  font-size: 2rem;
  color: var(--color-red);
  margin-bottom: 10px;
}
.card h2 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}
.card p {
  font-size: 0.9rem;
  color: #666;
}
.card:hover {
  transform: translateY(-5px);
}

/* Footer */
footer {
  background: var(--color-black);
  color: var(--color-white);
  text-align: center;
  padding: 1em;
  margin-top: auto;
}


.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}