/* ---------- BASE STYLES ---------- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f7f9fc;
  color: #333;
}

header {
  background-color: #2e86de;
  padding: 15px 10px;
  text-align: center;
  color: white;
}

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 10px;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: bold;
  padding: 8px 12px;
  border-radius: 4px;
  transition: background 0.2s;
}

nav a:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.container {
  width: 90%;
  max-width: 900px;
  margin: 20px auto;
  padding: 20px;
  background-color: white;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
}

h1,
h2 {
  color: #2e86de;
  margin-bottom: 15px;
}

input[type="text"] {
  width: 100%;
  padding: 15px;
  margin: 15px 0;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

button {
  padding: 12px 20px;
  font-size: 16px;
  background-color: #2e86de;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  display: inline-block;
  transition: background 0.2s;
}

button:hover {
  background-color: #1c5fad;
}

.copy-btn {
  margin-top: 10px;
  background-color: #00b894;
}

footer {
  text-align: center;
  padding: 15px 10px;
  margin-top: 30px;
  background-color: #2e86de;
  color: white;
}

footer a {
  color: white;
  margin: 0 10px;
  text-decoration: none;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  nav {
    flex-direction: column;
  }

  nav a {
    margin: 5px 0;
  }

  .container {
    width: 95%;
    padding: 15px;
  }

  button {
    width: 100%;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 22px;
  }

  h2 {
    font-size: 18px;
  }

  input[type="text"] {
    padding: 12px;
    font-size: 14px;
  }

  button {
    font-size: 14px;
    padding: 10px 15px;
  }
}