body {
    font-family: 'Poppins', sans-serif;
    background: url('background.jpg') no-repeat center center fixed; /* Background image */
    background-size: cover;
    margin: 0;
    padding: 0;
    color: #333;
}

header {
    background-color: rgba(63, 81, 181, 0.9); /* Semi-transparent Indigo */
    color: white;
    padding: 1em 0;
    text-align: center;
    font-size: 2em;
    text-shadow: 1px 1px #000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: center;
}

#logo {
    width: 50px; /* Adjust the size as needed */
    height: auto;
    margin-right: 10px;
}

nav {
    margin-top: 1em;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 10px;
    font-size: 1.1em;
}

nav a:hover {
    text-decoration: underline;
}

main {
    padding: 2em;
    max-width: 800px;
    margin: auto;
    background-color: rgba(255, 255, 255, 0.9); /* Semi-transparent white */
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    animation: fadeIn 1s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.form-group {
    margin-bottom: 1em;
}

label {
    display: block;
    margin-bottom: 0.5em;
    font-size: 1.1em;
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 0.5em;
    margin-bottom: 0.5em;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1em;
    transition: border-color 0.3s;
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="email"]:focus,
input[type="password"]:focus {
    border-color: #3f51b5; /* Indigo border on focus */
}

button {
    background-color: #ff4081; /* Pink */
    color: white;
    padding: 0.5em 1em;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1.1em;
    transition: background-color 0.3s, transform 0.3s;
}

button:hover {
    background-color: #f50057; /* Darker pink */
    transform: scale(1.05); /* Slightly enlarge on hover */
}

button:active {
    transform: scale(0.95); /* Slightly shrink on click */
}

#billTable {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1em;
    font-size: 1.1em;
}

#billTable th,
#billTable td {
    border: 1px solid #ccc; /* Light grey border */
    padding: 0.5em;
    text-align: left;
}

#billTable th {
    background-color: #3f51b5; /* Indigo */
    color: white;
}

#totalAmount {
    margin-top: 1em;
    font-size: 1.5em;
    color: #d32f2f; /* Red */
}

#printButton {
    margin-top: 1em;
    background-color: #03a9f4; /* Light blue */
}

#printButton:hover {
    background-color: #0288d1; /* Darker blue */
    transform: scale(1.05); /* Slightly enlarge on hover */
}

#printButton:active {
    transform: scale(0.95); /* Slightly shrink on click */
}

#advertisement {
    margin-top: 2em;
    padding: 1em;
    background-color: rgba(255, 255, 255, 0.9); /* Semi-transparent white */
    border: 1px solid #ccc;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

#advertisement h2 {
    font-size: 1.5em;
    margin-bottom: 0.5em;
}

#advertisement img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

#advertisement p {
    font-size: 1.1em;
    margin-top: 0.5em;
}

footer {
    background-color: rgba(63, 81, 181, 0.9); /* Semi-transparent Indigo */
    color: white;
    text-align: center;
    padding: 1em 0;
    margin-top: 2em;
}