/* Variables principales */
:root {
  --azul: #1e90ff;
  --fondo: #0d1117;
  --texto: #ffffff;
  --gris: #c0c0c0;
  --borde: #1e90ff;
  --card-fondo: #0f172a;
  --card-borde: #1e293b;
  --sombra: rgba(30, 144, 255, 0.4);
  --fuente: 'Poppins', sans-serif;
}

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

body {
  background-color: var(--fondo);
  font-family: var(--fuente);
  color: var(--texto);
  padding: 2rem 1rem;
}

/* Hero */
.hero {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem;
}

.hero-content .logo-img img {
  width: 80px;
  display: none;
}

/* Nav */
.nav {
  background-color: #10172a;
  position: relative;
}

/* Botón hamburguesa */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
}

.menu-toggle img {
  width: 36px;
  height: 36px;
}

/* Lista de navegación */
.nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
  padding: 1rem;
  gap: 1rem;
}

.nav a {
  color: var(--texto);
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s;
}

.nav a:hover {
  color: var(--azul);
}
.proyectos{
  margin-top: 4rem;
}

/* Sección proyectos */
.titulo-seccion {
  text-align: center;
  color: var(--azul);
  margin: 2rem 0;
}

.tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.tab-button {
  padding: 0.6rem 1.2rem;
  background-color: transparent;
  color: var(--azul);
  border: 2px solid var(--azul);
  border-radius: 6px;
  cursor: pointer;
  transition: 0.3s;
  font-weight: 500;
}

.tab-button:hover,
.tab-button.active {
  background-color: var(--azul);
  color: white;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  margin: 0 auto;
  max-width: 1100px;
  background-color: var(--card-fondo);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 0 15px var(--sombra);
  border: 1px solid var(--card-borde);
}

/* Cards */
.cards-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

.card {
  background-color: #111827;
  border-radius: 10px;
  padding: 1rem;
  text-align: center;
  max-width: 260px;
  flex: 1 1 250px;
  border: 1px solid #1e293b;
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 0 15px var(--sombra);
}

.card img {
  width: 100%;
  border-radius: 8px;
  margin-bottom: 0.8rem;
  object-fit: cover;
}

.card h3 {
  color: var(--azul);
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.card p {
  font-size: 0.95rem;
  color: var(--gris);
  margin-bottom: 1rem;
}

.card a {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: var(--azul);
  color: white;
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s;
}

.card a:hover {
  background-color: #006ddc;
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.9rem;
  background-color: #0d1224;
  color: var(--gris);
  margin-top: 3rem;
}

.footer-links {
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
}

.footer-links a {
  color: var(--azul);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-links img.icono-red {
  width: 20px;
  height: 20px;
}

/* Responsive general */
@media (max-width: 768px) {
  .cards-container {
    flex-direction: column;
    align-items: center;
  }

  .card {
    max-width: 90%;
  }

  .menu-toggle {
    display: block;
  }

  nav button img {
  border-radius: 8px;
  }

  .nav ul {
    display: none;
    flex-direction: column;
    background-color: #10172a;
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    z-index: 999;
  }

  .nav ul.show {
    display: flex;
  }

  .nav ul li {
    padding: 0.5rem 0;
    text-align: center;
  }
}

@media (min-width: 769px) {
  .menu-toggle {
    display: none;
  }
}

   /* Estilos para que el logo en pantallas mayores a 768px se vea */
  @media (min-width: 769px) {
    .hero-content .logo-img img {
      display: block;
    }
  }