@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;500;700&display=swap');

:root {
  --color-primario: #0d6efd;
  --color-secundario: #1b1b1b;
  --color-fondo: #f5f5f5;
  --color-blanco: #fff;
  --color-acento: #00b4d8;
}

body {
  font-family: "Poppins", sans-serif;
  margin: 0;
  background: var(--color-fondo);
  color: var(--color-secundario);
  scroll-behavior: smooth;
}

/* Header */
.header {
  background: var(--color-primario);
  color: var(--color-blanco);
  text-align: center;
  padding: 1.2rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 2rem;
  padding: 0;
  margin: 1rem 0 0 0;
}

.nav a {
  color: var(--color-blanco);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

.nav a:hover {
  color: var(--color-acento);
}

/* Hero */
.hero {
  height: 90vh;
  background: linear-gradient(to right, #0d6efd, #00b4d8);
  color: var(--color-blanco);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.hero-content {
  max-width: 700px;
  animation: fadeInUp 1s ease;
}

.hero h2 {
  font-size: 2rem;
}

.btn {
  display: inline-block;
  background: var(--color-blanco);
  color: var(--color-primario);
  padding: 0.8rem 1.5rem;
  border-radius: 30px;
  margin-top: 1.5rem;
  text-decoration: none;
  font-weight: 600;
  transition: 0.3s;
}

.btn:hover {
  background: var(--color-acento);
  color: var(--color-blanco);
  transform: translateY(-3px);
}

/* Secciones */
.section {
  padding: 4rem 1rem;
}

.alt-bg {
  background: var(--color-blanco);
}

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

h2 {
  text-align: center;
  color: var(--color-primario);
  margin-bottom: 1.5rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.card {
  background: var(--color-blanco);
  border-radius: 10px;
  padding: 1.5rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  transition: transform 0.3s;
}

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

/* Footer */
.footer {
  text-align: center;
  background: var(--color-secundario);
  color: var(--color-blanco);
  padding: 1.2rem;
  font-size: 0.9rem;
}

/* Animación */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}