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

body {
  color: #1a1a1a;
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 10%;
  background: #ffffff;
  border-bottom: 1px solid #eee;
}

.logo {
  font-weight: 700;
  font-size: 18px;
}

nav a {
  margin-left: 20px;
  font-size: 14px;
}

.btn {
  padding: 8px 16px;
  border: 1px solid #000;
  border-radius: 6px;
}

.hero {
  padding: 100px 10%;
  text-align: center;
}

.hero h1 {
  font-size: 42px;
  margin-bottom: 20px;
}

.hero p {
  max-width: 700px;
  margin: auto;
  color: #555;
}

.btn-primary {
  display: inline-block;
  margin-top: 30px;
  padding: 14px 28px;
  background: #000;
  color: #fff;
  border-radius: 8px;
}

.section {
  padding: 80px 10%;
}

.section h2 {
  text-align: center;
  margin-bottom: 40px;
  font-size: 32px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.card {
  padding: 30px;
  border: 1px solid #eee;
  border-radius: 12px;
}

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

.light {
  background: #f9f9f9;
}

.tech-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
}

.tech-list span {
  padding: 10px 16px;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 20px;
  font-size: 14px;
}

.about-text {
  max-width: 800px;
  margin: auto;
  text-align: center;
  color: #555;
}

.dark {
  background: #000;
  color: #fff;
  text-align: center;
}

.dark p {
  margin: 20px 0;
}

footer {
  text-align: center;
  padding: 20px;
  font-size: 14px;
  border-top: 1px solid #eee;
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 32px;
  }
}