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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f5f7fa;
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 700px;
  margin: 40px auto;
  padding: 20px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

h1 {
  text-align: center;
  margin-bottom: 30px;
  color: #2c3e50;
}

h2 {
  margin: 20px 0 12px;
  color: #3498db;
}

.generator, .checker {
  padding: 20px;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  margin-bottom: 25px;
}

.options label {
  display: block;
  margin: 8px 0;
}

#generatedPassword, #checkPassword {
  width: 100%;
  padding: 10px;
  margin: 10px 0;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 16px;
}

button {
  background: #3498db;
  color: white;
  border: none;
  padding: 10px 16px;
  margin-right: 8px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 16px;
}

button:hover {
  background: #2980b9;
}

#strengthBar {
  height: 10px;
  margin: 12px 0;
  border-radius: 5px;
  background: #eee;
  transition: all 0.3s;
}

#strengthText {
  font-weight: bold;
}