body {
  font-family: Arial, sans-serif;
  background-color: #f5f7fb;
  color: #111827;
  margin: 0;
  padding: 0;
}

.navbar {
  background: white;
  padding: 20px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.logo {
  font-size: 24px;
  font-weight: bold;
}

.nav-links a {
  margin-left: 20px;
  text-decoration: none;
  color: #111827;
  font-weight: 600;
}

.hero {
  text-align: center;
  padding: 100px 20px 60px;
}

.hero h1 {
  font-size: 56px;
  max-width: 900px;
  margin: auto;
  line-height: 1.2;
}

.hero p {
  font-size: 22px;
  max-width: 850px;
  margin: 30px auto;
  line-height: 1.6;
}

h1 {
  font-size: 48px;
  margin-bottom: 20px;
  text-align: center;
}

h2 {
  margin-top: 0;
}

h3 {
  font-size: 32px;
  margin-top: 20px;
}

p {
  font-size: 20px;
  max-width: 700px;
  margin: auto;
  line-height: 1.6;
}

.pricing-box {
  background: white;
  max-width: 900px;
  margin: 40px auto;
  padding: 40px;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

textarea {
  width: 100%;
  height: 250px;
  padding: 15px;
  border-radius: 12px;
  border: 1px solid #d1d5db;
  font-size: 16px;
  resize: vertical;
  box-sizing: border-box;
}

button {
  background-color: #111827;
  color: white;
  border: none;
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 16px;
  cursor: pointer;
  margin-bottom: 30px;
}

button:hover {
  opacity: 0.9;
}

.output-box {
  background: #f9fafb;
  border: 1px solid #d1d5db;
  border-radius: 12px;
  padding: 20px;
  min-height: 200px;
  text-align: left;
  white-space: pre-wrap;
  line-height: 1.6;
}