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

body {
  font-family: 'Segoe UI', sans-serif;
  line-height: 1.6;
  color: #333;
  background: #f9f9f9;
}

header {
  background: #0d0d0d;
  color: #fff;
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 999;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav h1 {
  font-size: 1.5rem;
}

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

nav a {
  color: #fff;
  text-decoration: none;
  transition: color 0.3s;
}

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

.hero {
  text-align: center;
  padding: 4rem 2rem;
  background: #e0f7fa;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero .btn {
  display: inline-block;
  margin-top: 1rem;
  background: #00bcd4;
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.3s;
}

.hero .btn:hover {
  background: #0097a7;
}

section {
  padding: 3rem 2rem;
}

h2 {
  text-align: center;
  margin-bottom: 2rem;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: #fff;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

footer {
  background: #0d0d0d;
  color: #fff;
  text-align: center;
  padding: 1rem;
}