/* Base resets */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: Arial, sans-serif;
  color: #333;
  line-height: 1.6;
}
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem;
}

/* Header & nav */
.header {
  background: #fafafa;
  border-bottom: 1px solid #ddd;
}
nav ul {
  display: flex;
  list-style: none;
  gap: 1rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}
.tab {
  cursor: pointer;
  padding: 0.5rem 1rem;
}
.tab.active {
  border-bottom: 2px solid #007bff;
  color: #007bff;
}

/* Hero section */
.hero {
  background: #f2faff;
  padding: 2rem 0;
  text-align: center;
}
.input-group {
  margin-top: 1rem;
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.input-group input {
  width: min(100%, 400px);
  padding: 0.75rem;
  border: 1px solid #ccc;
  border-radius: 4px;
}
.input-group button {
  padding: 0.75rem 1.5rem;
  border: none;
  background: #007bff;
  color: #fff;
  border-radius: 4px;
  cursor: pointer;
}
.input-group button:hover {
  background: #0056b3;
}

/* Feedback and results */
.feedback {
  margin-top: 1rem;
  color: #007bff;
}
.feedback.hidden {
  display: none;
}
.result {
  margin-top: 1rem;
}
.result a {
  display: block;
  margin: 0.5rem 0;
  color: #007bff;
  text-decoration: none;
}
.result a:hover {
  text-decoration: underline;
}

/* Features grid */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}
.feature h3 {
  margin-bottom: 0.5rem;
}

/* FAQ */
.faq h2 {
  margin-bottom: 1rem;
}
details {
  margin-bottom: 0.5rem;
}
details summary {
  font-weight: bold;
  cursor: pointer;
}
details p {
  margin-top: 0.5rem;
  padding-left: 1rem;
}

/* Footer */
.footer {
  text-align: center;
  padding: 1rem 0;
  border-top: 1px solid #ddd;
  margin-top: 2rem;
}