* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #0e1117;
  color: #fff;
}

header {
  background-color: #1f2230;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: box-shadow 0.3s ease-in-out;
}

header.sticky-active {
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
}

nav a {
  color: #fff;
  margin-left: 1.5rem;
  text-decoration: none;
  font-weight: 500;
}

nav a:hover {
  color: #00bcd4;
}

.hero {
  background: url('../assets/images/linesblockdiff.jpeg') center/cover no-repeat;
  height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-text h2 {
  font-size: 1.5rem;
  color: #bbb;
}

.hero-text h1 {
  font-size: 3rem;
  font-weight: bold;
  margin: 0.5rem 0;
}

.hero-text p {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

.hero-text {
  background-color: rgba(0, 0, 0, 0.6);
  padding: 2rem;
  border-radius: 15px;
  max-width: 600px;
  margin: 0 auto;
}

.btn {
  background-color: transparent;
  color: #00bcd4;
  padding: 0.6rem 1.2rem;
  border: 2px solid #00bcd4;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
}

.btn:hover {
  background-color: #00bcd4;
  color: #0e1117;
}

.info-cards {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  background-color: #151924;
  padding: 4rem 2rem;
}

.card {
  background-color: #202636;
  border-radius: 10px;
  padding: 2rem;
  margin: 1rem;
  flex: 1;
  max-width: 300px;
  text-align: center;
}

.card h3 {
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.card p {
  font-size: 1rem;
  color: #ccc;
}

footer {
  text-align: center;
  padding: 2rem;
  background-color: #1f2230;
  font-size: 0.9rem;
  color: #999;
}