:root {
  --azul-oscuro: #0b1b3b;
  --azul-brillante: #00c1ff;
  --verde-cian: #00e0b8;
  --verde-claro: #a3fdd8;
  --rosa-neon: #ff46a3;
  --blanco: #ffffff;
  --gris-claro: #f8f9fa;
  --gris-oscuro: #212529;
}

/* ========================
   Tipografías
======================== */
body {
  font-family: 'Inter', sans-serif;
  background-color: var(--gris-claro);
  color: var(--gris-oscuro);
  line-height: 1.6;
  margin: 0;
}

h1, h2, h3, h4, h5 {
  font-family: 'Poppins', sans-serif;
  color: var(--azul-oscuro);
  font-weight: 700;
}

/* ========================
   HERO
======================== */
.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 4rem 2rem;
  background: linear-gradient(120deg, var(--azul-oscuro), var(--azul-brillante), var(--verde-cian));
  background-size: 400% 400%;
  background-position: 0% 50%;
  transition: background-position 2s ease;
  color: var(--blanco);
}

.hero:hover {
  background-position: 100% 50%;
}

.hero-content {
  max-width: 900px;
  padding: 2rem;
}

.hero h1 {
  font-size: 2.8rem;
  margin-bottom: 1rem;
  line-height: 1.2;
  font-weight: 700;
  color: var(--blanco);
  text-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.hero .highlight {
  color: var(--verde-cian);
  transition: color 2s ease;
}

.hero:hover .highlight {
  color: var(--gris-oscuro);
}


.hero .subtitle {
  font-size: 1.5rem;
  color: var(--verde-claro);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.event-info {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--blanco);
  margin-bottom: 2rem;
  display: flex;
  justify-content: center;
}

.cta-button {
  display: inline-block;
  padding: 0.75rem 2rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--gris-oscuro);
  background-color: var(--verde-cian);
  border-radius: 8px;
  text-decoration: none;
  transition: background-color 0.3s ease;
}

.cta-button:hover {
  background-color: var(--azul-brillante);
  color: var(--blanco);
}

/* ========================
   Sección de contenido
======================== */

.container {
  max-width: 960px;
  margin: 0 auto;
}

section h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

section h5 {
  font-size: 1.25rem;
  margin-top: 1.5rem;
  color: var(--azul-oscuro);
}

section ul {
  padding-left: 1.25rem;
  margin-bottom: 2rem;
}

section ul li {
  margin-bottom: 0.5rem;
}

/* ========================
   Cards de contenido
======================== */
.card {
  background: linear-gradient(145deg, var(--blanco), #eef6f5);
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.05);
  margin-bottom: 2rem;
  transition: transform 0.2s ease;
}

.card:hover {
  transform: translateY(-5px);
}

.card h3 {
  color: var(--azul-oscuro);
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* ========================
   Footer
======================== */
footer {
  background-color: var(--azul-oscuro);
  color: var(--blanco);
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.9rem;
}

footer a {
  color: var(--azul-brillante);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

footer img {
  margin-top: 1rem;
  max-width: 150px;
}

/* ========================
   Responsive tweaks
======================== */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.2rem;
  }

  .hero .subtitle {
    font-size: 1.1rem;
  }

  .cta-button {
    font-size: 1rem;
    padding: 0.6rem 1.5rem;
  }
}