body {  
    font-family: 'Arial', sans-serif;  
    margin: 0;  
    padding: 0;  
    height: 100vh;  
    display: flex;  
    justify-content: center;  
    align-items: center;  
    position: relative;  
    overflow: hidden;  
    background: #4CAF50; /* Green background color */  
}  
  
#particles-js {  
    position: absolute;  
    width: 100%;  
    height: 100%;  
    z-index: 1;  
}  
  
.container {  
    background: rgba(255, 255, 255, 0.9);  
    padding: 40px; /* Tambahkan padding lebih besar */  
    border-radius: 15px;  
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);  
    text-align: center;  
    position: relative;  
    z-index: 2;  
    width: 500px; /* Perbesar lebar */  
    max-width: 95%; /* Maksimum agar tetap responsif */  
}
  
h2 {  
    color: #333;  
    margin-bottom: 20px;  
    font-size: 24px; /* Increased font size */  
}  
  
input {  
    width: calc(100% - 24px); /* Full width minus padding */  
    padding: 12px;  
    margin: 10px 0;  
    border: 1px solid #ccc;  
    border-radius: 5px;  
    font-size: 16px; /* Increased font size */  
    transition: border-color 0.3s; /* Smooth transition */  
}  
  
input:focus {  
    border-color: #5cb85c; /* Change border color on focus */  
    outline: none; /* Remove default outline */  
}  
  
button {  
    background: #5cb85c;  
    color: white;  
    border: none;  
    padding: 12px 15px;  
    border-radius: 5px;  
    cursor: pointer;  
    font-size: 16px; /* Increased font size */  
    transition: background-color 0.3s; /* Smooth transition */  
    width: calc(100% - 24px); /* Full width minus padding */  
}  
  
button:hover {  
    background: #4cae4c; /* Darker green on hover */  
}  
  
p {  
    margin: 15px 0; /* Spacing for paragraph elements */  
    color: #555; /* Darker color for contrast */  
}  
  
a {  
    color: #5cb85c; /* Link color */  
    text-decoration: none; /* Remove underline */  
}  
  
a:hover {  
    text-decoration: underline; /* Underline on hover */  
}  
  
.error {  
    color: red; /* Error message color */  
}  
  
.success {  
    color: green; /* Success message color */  
}