body {
  font-family:  sans-serif;
  background: #222;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  background: #333;
  padding: 20px;
  border-radius: 10px;
  max-width: 360px;
  text-align: center;
}


.options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 15px;
    text-align: left;
}

.generate-btn {
  background: #007bff;
  color: #fff;
  border: none;
  padding: 10px;
  cursor: pointer;
  margin: 15px 0;
  font-size: 16px;
  font-weight: 500;
  border-radius: 5px;
  transition: all ease 0.5s ;
}

.generate-btn:hover{
    background: #fff;
    color: #007bff;
}


.password-box {
  display: none;
  gap: 10px;
  margin-top: 15px;
  position: relative;
}

.password-box input {
    outline: none;
    border: 1px solid #fff;
    border-radius: 5px;
    background: transparent;
    flex: 1;
    padding: 12px;
}

.password-box button {
    outline: none;
    border: 1px solid #fff;
    border-radius: 5px;
    padding: 12px 20px;
    cursor: pointer;
    color: #fff;
    font-size: 16px;
    background: transparent;
    transition: all ease 0.5s;
}

.password-box button:hover{
    background: #fff;
    color: #333;    
}




.password{
  color: #fff;
  font-size: 15px;
}

.copy-msg {
  position: absolute;
  background: #4caf50;
  color: white;
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 14px;
  top: -35px;
  right: 10px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  transform: translateY(-5px);
}

.error-msg{
  position: absolute;
  background: red;
  color: #fff;
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 14px;
  top: 210px;
  left: 638px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  transform: translateY(-5px);
}

.error-msg.show{
   opacity: 1;
  transform: translateY(0);
}

.copy-msg.show {
  opacity: 1;
  transform: translateY(0);
}

.flash {
  border-color: #007bff;
  box-shadow: 0 0 5px #007bff;
}


@media (max-width: 480px) {
  body {
    padding: 10px;
  }

  h1 {
    font-size: 20px;
  }

  .generate-btn {
    font-size: 14px;
    padding: 8px;
  }

  .password-box {
    flex-direction: column;
  }

  .password-box input,
  .password-box button {
    width: 100%;
    font-size: 14px;
  }

  .error-msg {
    left: 50%;
    transform: translateX(-50%);
    top: auto;
    bottom: -20px;
  }
}