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

body {
  background-color: #000;  /* Pure black background */
  color: #fff;             /* White text */
  line-height: 1.6;
}

header {
  background-color: #0f6422;
  padding: 1.5rem;
  text-align: center;
}

header h1 {
  font-size: 2rem;
}

nav {
  margin-top: 1rem;
}

nav a {
  color: #fafafa;
  margin: 0 1rem;
  text-decoration: none;
  font-weight: bold;
}

.hero {
  padding: 3rem 1.5rem;
  text-align: center;
}

.hero h2 {
  font-size: 2.2rem;
  color: #00c1d4;
}

.hero p {
  margin: 1rem 0;
  font-size: 1.1rem;
  color: #fff;
}

.btn {
  background-color: #00c1d4;
  color: #000;
  padding: 0.8rem 1.5rem;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-weight: bold;
  margin: 0.5rem;
  display: inline-block;
}

.features {
  padding: 2rem;
  background-color: #111;
}

.features h3 {
  text-align: center;
  color: #ff4d4f;
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.features p,
.features ol {
  max-width: 800px;
  margin: auto;
  padding-bottom: 1rem;
  color: #fff;
}

.features ul {
  list-style: none;
  max-width: 700px;
  margin: auto;
  padding: 0;
}

.features li {
  padding: 0.6rem 0;
  font-size: 1.1rem;
  border-bottom: 1px solid #333;
  color: #fff;
}

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

.screenshots h3 {
  color: #ff4d4f;
  font-size: 1.8rem;
}

.screenshots img {
  max-width: 90%;
  margin-top: 1rem;
  border: 3px solid #00c1d4;
  border-radius: 10px;
}

.footer {
  text-align: center;
  background-color: #111;
  padding: 2rem 1rem;
  color: #aaa;
}

@media screen and (max-width: 600px) {
  header h1 {
    font-size: 1.5rem;
  }

  .hero h2 {
    font-size: 1.5rem;
  }

  .btn {
    width: 90%;
    margin: 0.4rem auto;
  }
}