/* Minimalist design inspired by Neuralink’s website */

html,
body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  background-color: #000;
  color: #fff;
  line-height: 1.6;
}

a {
  color: #00bcd4;
  text-decoration: none;
  transition: color 0.2s ease-in-out;
}

a:hover {
  color: #80deea;
}

/* Navigation bar */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  z-index: 1000;
  display: flex;
  justify-content: center;
  padding: 0.5rem 1rem;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1.5rem;
}

nav li {
  margin: 0;
}

nav a {
  font-size: 0.95rem;
  color: #e0e0e0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

nav a:hover {
  color: #ffffff;
}

/* Hero section */
.hero {
  position: relative;
  height: 80vh;
  background: url('../assets/hero.png') center/cover no-repeat;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
}

.hero-content {
  position: relative;
  max-width: 800px;
  padding: 1rem;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
}

.button-group {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.btn {
  padding: 0.8rem 1.4rem;
  border: 1px solid #00bcd4;
  color: #00bcd4;
  background: transparent;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.2s ease-in-out, color 0.2s ease-in-out;
}

.btn:hover {
  background: #00bcd4;
  color: #000;
}

/* Content sections */
main {
  padding-top: 4.5rem; /* offset for fixed navbar */
}

section {
  padding: 4rem 1rem;
  max-width: 900px;
  margin: 0 auto;
}

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

section h3 {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
  color: #eeeeee;
}

section p {
  margin-bottom: 1rem;
  font-size: 1rem;
  color: #cccccc;
}

footer {
  background: #111;
  padding: 2rem 1rem;
  text-align: center;
  font-size: 0.9rem;
  color: #777;
}