:root {
  --bg-dark: #0f172a;
  --bg-light: #020617;
  --accent: #38bdf8;
  --text-main: #e5e7eb;
  --text-muted: #94a3b8;
}

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

body {
  font-family: Arial, Helvetica, sans-serif;
  background-color: var(--bg-light);
  color: var(--text-main);
  line-height: 1.6;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background-color: var(--bg-dark);
}

.logo {
  height: 60px;
}

nav a {
  color: var(--text-main);
  text-decoration: none;
  margin-left: 1.5rem;
  font-weight: 500;
}

nav a:hover {
  color: var(--accent);
}

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

.hero h1 {
  font-size: 2.5rem;
  color: var(--accent);
}

.hero p {
  max-width: 600px;
  margin: 1rem auto 0;
  color: var(--text-muted);
}

.services {
  padding: 3rem 2rem;
}

.services h2,
.about h2,
.contact h2 {
  text-align: center;
  margin-bottom: 2rem;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.card {
  background-color: var(--bg-dark);
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.card h3 {
  margin-bottom: 0.5rem;
  color: var(--accent);
}

.about,
.contact {
  padding: 3rem 2rem;
  text-align: center;
}

footer {
  text-align: center;
  padding: 1rem;
  background-color: var(--bg-dark);
  color: var(--text-muted);
  font-size: 0.9rem;
}