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

html {
  font-size: 16px; 
}


body {
  font-family: 'Arial', sans-serif; 
  background-color: #f4f7fb; 
  color: #333; 
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh; 
  margin: 0;
  padding: 20px;
}


.container {
  background: #fff;
  border-radius: 12px; 
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1); 
  width: 100%;
  max-width: 480px; 
  padding: 30px;
  text-align: center;
  box-sizing: border-box;
}

h1 {
  font-size: 2.5rem; 
  margin-bottom: 1.5rem; 
  color: #00008b; 
  font-weight: bold;
}


input {
  width: 100%;
  padding: 15px;
  margin-bottom: 1.5rem; 
  border: 2px solid #ddd; 
  border-radius: 8px; 
  font-size: 1rem; 
  outline: none; 
  transition: border-color 0.3s ease-in-out; 
}


input:focus {
  border-color: #00ffff; 
  box-shadow: 0 0 5px rgba(4, 211, 222, 0.5); 
}


button {
  padding: 14px 24px;
  background-color: #00ffff; 
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1.1rem; 
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.2s ease-in-out; 
}

button:hover {
  background-color: #00ffff; 
}

button:active {
  transform: scale(0.98); 
}


#qrcode {
  margin-top: 2rem;
  padding: 10px;
  border: 1px solid #ddd; 
  border-radius: 8px; 
  display: inline-block;
  background: #fff;
}


@media (max-width: 600px) {
  .container {
    padding: 20px;
  }

  h1 {
    font-size: 2rem; 
  }

  input {
    padding: 12px; 
    font-size: 0.9rem; 
  }

  button {
    padding: 12px 20px; 
    font-size: 1rem; 
  }
}