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

body {
  background: #0f172a;
  color: #e5e7eb;
}

/* NAVBAR */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 40px;
  background: #020617;
  position: sticky;
  top: 0;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: #38bdf8;
}

.navbar a {
  margin-left: 20px;
  text-decoration: none;
  color: #cbd5f5;
  font-size: 14px;
}

/* HERO */
.hero {
  height: 90vh;
  background: linear-gradient(135deg, #020617, #1e293b);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

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

.hero p {
  font-size: 18px;
  margin-bottom: 25px;
  color: #cbd5f5;
}

.hero button {
  padding: 12px 28px;
  border: none;
  border-radius: 8px;
  background: #38bdf8;
  color: #020617;
  font-weight: bold;
  cursor: pointer;
}

/* SECTIONS */
.section {
  padding: 70px 40px;
  text-align: center;
}

.section h2 {
  font-size: 32px;
  margin-bottom: 20px;
}

.section p {
  max-width: 700px;
  margin: auto;
  line-height: 1.6;
}

.dark {
  background: #020617;
}

/* CARDS */
.cards {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 25px;
}

.card {
  background: #1e293b;
  padding: 25px;
  border-radius: 14px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-6px);
}

.card h3 {
  margin-bottom: 10px;
  color: #38bdf8;
}

.highlight {
  border: 2px solid #38bdf8;
}

/* FOOTER */
.footer {
  text-align: center;
  padding: 25px;
  background: #020617;
  font-size: 14px;
  color: #94a3b8;
}