:root {
    --color-principal: #066b2d; 
    --color-secundario: #91ffa9; 
    --color-terciario: #705E85;
    --color-borde: #E0E0E0;
    --color-fondo-exterior: #befcc1;
    --color-fondo-tarjeta: #befcc1;
    --color-texto-oscuro: #333333;
    --color-texto-claro: #ffffff;
}

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

body {
  background-color: var(--color-secundario);
  font-family: 'Inter', sans-serif;
  line-height; 1.6;
  }

.top-nav {
    background-color: black;
    padding: 15px 0;
    text-align: center;
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.1);
    margin-bottom: 40px;
}

.top-nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 30px;
    margin: 0;
    padding: 0;
}

.top-nav a {
    color: white;
    font-weight: 500;
    font-size: 1em;
    padding: 5px 10px;
    border-bottom: 2px solid transparent;
    text-decoration: none;
    transition: border-bottom-color 0.3s ease, color 0.3s ease;
}

.top-nav a:hover {
    border-bottom-color: var(--color-borde);
    color: var(--color-secundario);
}

header img {
  width: 260px;
  height: 340px;
  border-radius: 48px;
  object-fit: cover;
  border: 4px solid black;
  box-shadow: 0 4px 24px #000a;
  margin: 32px auto 0 auto;
  display: block;
}

header h1 {
  margin-top: 24px;
  margin-bottom: 8px;
  font-family: "Inter", system-ui;
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  text-shadow: 0 2px 4px var(--color-principal)
  color black
  letter-spacing: 1px;
}

header h2 {
  text-align: center;
  margin-top: 24px;
  margin-bottom: 0;
  font-family: 'Inter';
  font-size: 1.2rem;
  color: black
}

main h2 {
  text-align: center;
  margin-top: 24px;
  margin-bottom: 0;
  font-family: 'Inter';
  font-size: 1.2rem;
  color: black
  border: 2px solid black;
  box-shadow: 0 4px 24px #000a;
  margin: 32px auto 0 auto;
  display: block;
}


.segundo-nav {
    padding: 2rem;
    margin-top: 4rem; 
    text-align: center;
}

.segundo-nav h2 {
    text-align: center;
  margin-top: 24px;
  margin-bottom: 12px;
  font-family: 'Inter';
  font-size: 1.2rem;
  color: black
  border: 2px solid black;
  box-shadow: 0 4px 24px #000a;
  margin: 32px auto 32px auto;
  display: block;
}


.segundo-nav .nav-lista {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    gap: 1.5rem; 
}

.segundo-nav .nav-items {
    flex-basis: 180px; 
    flex-grow: 1; 
}


.segundo-nav .nav-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
    color: var(--color-secundario);
    padding: 2rem 1rem;
    background-color: black;
    border-radius: 1rem;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}


.segundo-nav .nav-link:hover {
    transform: translateY(-5px); 
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.nav-link img{
    width: 8rem;
    height: 8rem;
    border-radius: 25%;
    margin-bottom: 1rem;
}

.segundo-nav .nav-link span {
    font-size: 1rem;
    line-height: 1.2;
    text-align: center;
}

.nav-link {
  color: #000000;
  text-decoration: none;
  font-size: 1.1rem;
  padding: 0.5rem 1rem;
  transition: color 0.3s ease, background-color 0.3s ease;
  border-radius: 0.3rem;
  position: relative;
  overflow: hidden;
  display: inline-block;
}

.nav-link:hover {
  color: white;
}

.nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: bottom left;
}


.curso-details p {
    margin-top: 3rem;
    font-style: italic;
    color: white;
}

.materias-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr); 
  gap: 30px;
  max-width: 800px;   
  margin: 0 auto;      
  padding: 40px 20px;  
}

.materias-section {
  background: black;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.materias-section h3 {
  margin-top: -10px;
  text-align: center;
  color: var(--color-secundario);
}

ul.materias {
  display: grid;
  grid-template-columns: 1fr;
  color: white;
  gap: 8px 12px;
  padding-left: 10px;
  margin: 0;
}

ul.materias li {
  padding-left: 6px;
}

footer {
    background-color: black;
    color: var(--color-secundario);
    padding: 5%;
    font-size: 0.8rem;
    margin-top: 4rem;
}

.legal  {
    color: var(--color-secundario);
    font-size: 0.7rem;
    font-style: italic;
    border-top-style: solid;
    border-color: var(--color-legal-border);
    border-width: 1px;
    padding-top: 1rem;
    margin-top: 4%;
}