:root {
  --azul: #003366;
  --dorado: #e6b800;
  --gris: #444;
  --gris-claro: #f6f6f6;
  --blanco: #ffffff;
  --radius: 12px;
  font-family: "Poppins", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: var(--blanco);
  color: var(--gris);
  line-height: 1.6;
  font-size: 16px;
}

.container {
  max-width: 1100px;
  margin: 28px auto;
  padding: 15px;
}

header {
  display: flex;
  gap: 18px;
  margin-bottom: 25px;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  background: var(--blanco);
  margin-top: -50px;
  z-index: 1000;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 25px;
}

.logo {
  width: 75px;
  height: 75px;
}

.logo img {
  width: 70px;
  height: 70px;
  object-fit: contain;
}

h1 {
  font-size: 1.6rem;
  color: var(--azul);
}

.lead {
  color: var(--gris);
  font-size: 1rem;
}

nav {
  background: var(--azul);
  padding: 8px 12px;
  width: 100%;
}

nav ul {
  display: flex;
  list-style: none;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

nav a {
  color: var(--blanco);
  text-decoration: none;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 8px;
  transition: background 0.3s ease;
}

.menu-toggle-checkbox {
  display: none;
}

.menu-toggle-label {
  display: none;
  cursor: pointer;
  width: 40px;
  height: 30px;
  position: absolute;
  right: 20px;
  top: 30px;
  z-index: 2000;
}

.menu-icon,
.menu-icon::before,
.menu-icon::after {
  background-color: var(--azul);
  width: 100%;
  height: 4px;
  display: block;
  border-radius: 2px;
  position: absolute;
  transition: all 0.3s ease;
}

.menu-icon {
  top: 13px;
}

.menu-icon::before {
  content: "";
  top: -10px;
}

.menu-icon::after {
  content: "";
  top: 10px;
}

.menu-toggle-checkbox:checked + .menu-toggle-label .menu-icon {
  background: transparent;
}

.menu-toggle-checkbox:checked + .menu-toggle-label .menu-icon::before {
  transform: rotate(45deg);
  top: 0;
}

.menu-toggle-checkbox:checked + .menu-toggle-label .menu-icon::after {
  transform: rotate(-45deg);
  top: 0;
}

@media (max-width: 768px) {
  nav ul {
    flex-direction: column;
    align-items: center;
    display: none;
    background: var(--azul);
    width: 100%;
    padding: 10px 0;
  }

  .menu-toggle-label {
    display: block;
  }

  .menu-toggle-checkbox:checked ~ nav ul {
    display: flex;
  }
}

.grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 20px;
  align-items: start;
}

main {
  background: var(--blanco);
  padding: 18px;
}

.card {
  background: var(--gris-claro);
  padding: 14px;
  margin-bottom: 14px;
  border-left: 4px solid var(--azul);
}

.card-inner {
  margin-top: 8px;
  color: var(--gris);
}

section h2 {
  color: var(--azul);
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.units {
  display: grid;
  gap: 12px;
}

.unit {
  background: var(--blanco);
  border-left: 4px solid var(--dorado);
  padding: 12px;
}

.unit h3 {
  color: var(--azul);
  margin-bottom: 6px;
  font-size: 1rem;
}

.unit ul {
  color: var(--gris);
  padding-left: 18px;
}

figure {
  margin-bottom: 12px;
}

img {
  width: 100%;
  height: auto;
  background: var(--blanco);
}

figcaption {
  font-size: 0.88rem;
  color: var(--gris);
  margin-top: 6px;
}

.video-wrap iframe {
  width: 100%;
  border-radius: 8px;
}

aside {
  background: var(--gris-claro);
  padding: 14px;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
}

aside h2,
aside h3 {
  color: var(--azul);
  margin-bottom: 8px;
}

aside .card {
  background: var(--blanco);
  border-left: 4px solid var(--dorado);
  padding: 12px;
  margin-bottom: 10px;
}

footer {
  margin-top: 22px;
  text-align: center;
  padding: 15px;
  color: var(--gris);
  font-size: 0.9rem;
  border-top: 2px solid var(--azul);
}

#inicio {
  scroll-margin-top: 3000px;
}

section[id] {
  scroll-margin-top: 500px;
}

#multimedia,
#programa,
#proposito,
#unidades,
#evidencia {
  scroll-margin-top: 180px;
}

/* Responsivo de tablet */
@media (max-width: 992px) {
  .grid {
    grid-template-columns: 1fr;
  }

  nav ul {
    justify-content: space-around;
  }

  .brand {
    flex-direction: column;
    text-align: center;
  }

  header {
    justify-content: center;
  }

  main, aside {
    padding: 12px;
  }

  aside {
    margin-top: 10px;
  }

  h1 {
    font-size: 1.4rem;
  }

  .lead {
    font-size: 0.95rem;
  }

  #inicio {
    scroll-margin-top: 3000px;
  }

  section[id] {
    scroll-margin-top: 50px;
  }

  #multimedia,
  #programa,
  #proposito,
  #unidades,
  #evidencia {
    scroll-margin-top: 250px;
  }
}

/* Responsivo de móvil */
@media (max-width: 600px) {
  body {
    font-size: 15px;
  }

  header {
    margin-top: 0;
  }

  .brand {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  nav ul {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }

  nav a {
    display: block;
    width: 100%;
    text-align: center;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  main, aside {
    padding: 10px;
  }

  .logo img {
    width: 60px;
    height: 60px;
  }

  h1 {
    font-size: 1.2rem;
  }

  section h2 {
    font-size: 1rem;
  }

  .unit h3 {
    font-size: 0.95rem;
  }

  footer {
    font-size: 0.8rem;
    padding: 12px;
  }

  #inicio {
    scroll-margin-top: 3000px;
  }

  section[id] {
    scroll-margin-top: 50px;
  }

  #multimedia,
  #programa,
  #proposito,
  #unidades,
  #evidencia {
    scroll-margin-top: 500px;
  }
}