* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  background: #111;
  color: #fff;
  scroll-behavior: smooth;
}

/* HERO */
header {
  position: relative;
  height: 100vh;
  background: url('https://images.unsplash.com/photo-1600891964599-f61ba0e24092?w=1600&auto=format&fit=crop') center/cover;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 20px;
}

.hidden {
  opacity: 0;
  transform: translateY(30px);
  transition: 0.6s;
}

.show {
  opacity: 1;
  transform: translateY(0);
}

/* overlay oscuro (PRO 🔥) */
header::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.6);
}

header * {
  position: relative;
}

header h1 {
  font-size: 3.2rem;
  letter-spacing: 2px;
}

header p {
  margin: 10px 0;
  font-size: 1.2rem;
  opacity: 0.9;
}

/* BOTONES */
.btn {
  padding: 12px 25px;
  margin: 10px;
  border: none;
  border-radius: 30px;
  cursor: pointer;
  transition: 0.3s;
  font-weight: 500;
}

.btn:hover {
  transform: scale(1.1);
  opacity: 0.9;
}

.btn-primary {
  background: #e63946;
  color: white;
}

.btn-whatsapp {
  background: #25d366;
  color: white;
}

/* SECCIONES */
section {
  padding: 70px 20px;
  text-align: center;
}

section h2 {
  font-size: 2rem;
  margin-bottom: 15px;
}

/* GRID */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

/* CARD */
.card {
  background: #1a1a1a;
  border-radius: 12px;
  overflow: hidden;
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-10px) scale(1.03);
}

.card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card h3 {
  margin-top: 10px;
}

.card p {
  opacity: 0.8;
  margin-bottom: 10px;
}

/* DESTACADO */
.highlight {
  background: #1d1d1d;
  padding: 50px 20px;
}

.highlight h3 {
  margin: 10px 0;
  font-size: 1.5rem;
}

/* BOTÓN FLOTANTE */
.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #25D366;
  color: white;
  font-size: 24px;
  padding: 15px;
  border-radius: 50%;
  text-decoration: none;
  box-shadow: 0 5px 15px rgba(0,0,0,0.3);
  transition: 0.3s;
}

.whatsapp-float:hover {
  transform: scale(1.1);
}

/* FOOTER */
footer {
  background: black;
  padding: 20px;
  font-size: 0.9rem;
  opacity: 0.8;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  header h1 {
    font-size: 2.5rem;
  }

  header p {
    font-size: 1rem;
  }
}