* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background: linear-gradient(lightgreen, lightblue, lightpink);
  padding: 20px;
}

.container {
  background: #f4f4f9;
  padding: 40px;
  border-radius: 20px;
  box-shadow: -4px -4px 8px rgba(0, 0, 0, 0.3);
  transition: all 0.2s ease-in-out;
  max-width: 500px;
  width: 100%;
}

.container:hover {
  transform: scale(1.02);
}

form {
  background: #fff;
  padding: 30px;
  border-radius: 15px;
  box-shadow: 4px 4px 8px rgba(0,0,0,0.2);
  width: 100%;
}

h2 {
  font-size: 2em;
  text-align: center;
  margin-bottom: 20px;
}

.form-control {
  margin-bottom: 15px;
}

label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}

input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 8px;
  outline: none;
}

input:focus {
  border-color: #007BFF;
}

small.error {
  color: red;
  font-size: 13px;
}

button {
  width: 100%;
  font-size: 1em;
  padding: 12px;
  background: #007BFF;
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s;
}

button:hover {
  background: #0056b3;
}

#successMsg {
  margin-top: 15px;
  text-align: center;
  font-weight: bold;
  color: green;
}

/* 📱 Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 20px;
  }

  form {
    padding: 20px;
  }

  h2 {
    font-size: 1.8em;
  }

  button {
    font-size: 0.95em;
    padding: 10px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 15px;
  }

  form {
    padding: 15px;
  }

  h2 {
    font-size: 1.5em;
  }

  input {
    padding: 8px;
  }

  button {
    font-size: 0.9em;
    padding: 8px;
  }
}