:root {
  --brand: #2f855a;
  --brand-dark: #276749;
  --text: #333333;
  --bg: #f9f9f9;
  --card: #ffffff;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Roboto', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--brand);
  display: flex;
  gap: 1rem;
  padding: 0.75rem 1rem;
  z-index: 1000;
}

.nav__link {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
}

.nav__link:hover, .nav__link:focus { text-decoration: underline; }

.hero {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  background: linear-gradient( to bottom, rgba(0,0,0,.35), rgba(0,0,0,.35) ), url('../assets/hero1.jpg') center/cover no-repeat;
  color: #fff;
}

.hero__content {
  padding: 8rem 1rem 4rem; /* compensa la nav fija */
}

.btn {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  background: #fff;
  color: var(--brand);
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 700;
}

main { padding-top: 4rem; }

.section {
  padding: 3rem 1rem;
}

.section--alt {
  background: #eef6f1;
}

h1, h2, h3 { margin: 0 0 0.75rem; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

figure { margin: 0; background: var(--card); border-radius: 0.5rem; overflow: hidden; box-shadow: 0 1px 4px rgba(0,0,0,.06); }
figcaption { padding: 0.5rem 0.75rem; font-size: 0.9rem; }
img { width: 100%; height: 220px; object-fit: cover; display: block; }

ul { padding-left: 1.25rem; }

.card {
  background: var(--card);
  padding: 1rem;
  border-radius: 0.5rem;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
  margin: 0.75rem 0;
}

.values { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.values li { background: var(--card); border: 1px solid #e5e5e5; border-radius: 999px; padding: 0.5rem 0.75rem; }

.footer {
  text-align: center;
  background-color: #4d5b97;
  color: #fff;
  padding: 1.25rem 1rem;
}

.icon {
  width: 1em;
  height: 1em;
  vertical-align: -0.125em;
  margin-right: 0.375rem;
}

.icon-link {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
}

.icon-link:hover, .icon-link:focus { text-decoration: underline; }

/* Evita que los anclajes queden ocultos bajo la nav fija */
[id] { scroll-margin-top: 4.5rem; }