* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  background: linear-gradient(135deg, #0f172a, #020617);
  color: #e5e7eb;
  min-height: 100vh;
}

/* NAVBAR */
.navbar {
  display: flex;
  justify-content: space-between;
  padding: 20px 40px;
}

.navbar a {
  color: #cbd5f5;
  margin-left: 20px;
  text-decoration: none;
}

.logo {
  font-weight: bold;
  font-size: 20px;
}

/* HERO */
.hero {
  text-align: center;
  padding: 100px 20px;
}

.hero h1 {
  font-size: 42px;
  margin-bottom: 15px;
}

.subtitle {
  font-size: 18px;
  opacity: 0.85;
  margin-bottom: 30px;
}

.hero button {
  background: #6366f1;
  color: white;
  border: none;
  padding: 14px 28px;
  font-size: 16px;
  border-radius: 6px;
  cursor: pointer;
}

.note {
  margin-top: 15px;
  font-size: 14px;
  opacity: 0.6;
}

/* STEPS */
.steps {
  padding: 80px 20px;
  background: #020617;
  text-align: center;
}

.steps h2 {
  margin-bottom: 40px;
}

.cards {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
}

.card {
  background: #0f172a;
  padding: 30px;
  width: 200px;
  border-radius: 10px;
}

.card span {
  font-size: 28px;
  color: #818cf8;
}

/* RESULT */
.result {
  padding: 60px 20px;
  text-align: center;
}

.result pre {
  background: #020617;
  padding: 20px;
  border-radius: 8px;
  margin: 20px auto;
  max-width: 600px;
  text-align: left;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 20px;
  font-size: 14px;
  opacity: 0.5;
}