body {
  margin: 0;
  font-family: 'Raleway', Arial, sans-serif;
  color: #fff;
  background-color: #0e0e0e;
}

header {
  background: #000;
  padding: 15px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header .logo a {
  color: #fff;
  text-decoration: none;
  font-size: 1.5em;
  font-family: 'Playfair Display', serif;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 15px;
}

nav ul li {
  position: relative;
}

nav a {
  text-decoration: none;
  color: #fff;
  padding: 8px 12px;
}

nav ul li ul {
  position: absolute;
  top: 100%;
  left: 0;
  background: #222;
  display: none;
  flex-direction: column;
}

nav ul li:hover ul {
  display: flex;
}

/* HERO */
.hero {
  position: relative;
  background: url("../img/vision-hero.jpg") no-repeat center center/cover;
  height: 400px;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.6);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.hero-overlay h1 {
  font-family: 'Playfair Display', serif;
  font-size: 2.8em;
  margin: 0;
}

.hero-overlay p {
  font-family: 'Raleway', sans-serif;
  font-size: 1.2em;
  color: #ccc;
  max-width: 700px;
}

/* INTRO */
.intro {
  max-width: 800px;
  margin: 50px auto;
  padding: 0 20px;
  text-align: center;
}

/* DIFERENCIALES */
.diferenciales {
  background: #111;
  padding: 40px 20px;
  text-align: center;
}

.diferenciales h2 {
  font-size: 2em;
  margin-bottom: 20px;
}

.diferenciales-lista {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.diferenciales-lista div {
  background: #1a1a1a;
  padding: 15px;
  border-radius: 4px;
  text-align: left;
}

.diferenciales-lista i {
  color: #4da6ff;
  margin-right: 8px;
}

/* VISION-EXTRA */
.vision-extra {
  position: relative;
  height: 300px;
  background: url("../img/vision-extra.jpg") no-repeat center center/cover;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.vision-extra-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.6);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.vision-extra-overlay h2 {
  font-family: 'Playfair Display', serif;
  font-size: 2.8em;
  margin: 0;
}

.vision-extra-overlay p {
  font-family: 'Raleway', sans-serif;
  font-size: 1.2em;
  color: #ccc;
  max-width: 700px;
  margin-top: 10px;
}

/* FOOTER */
footer {
  background: #000;
  text-align: center;
  padding: 20px;
  font-size: 0.9em;
}

footer .social a {
  color: #fff;
  margin: 0 5px;
  font-size: 1.2em;
}