body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    height: 100vh;
    text-align: center;
    color: #333;
    background: #f4f4f4;
}
.container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 20px;
}
h1 {
    font-size: 2rem;
    margin: 0 0 1rem;
}
p {
    font-size: 1rem;
    color: #555;
}
#scanned{
    font-size: 1.5rem;
    font-weight: 500;
    /* margin: 0 0 1rem; */
}
.button-container {
    padding: 20px;
}
.scan-button {
    display: inline-block;
    width: 18rem;
    padding: 15px 30px;
    font-size: 1rem;
    color: #fff;
    background: #007bff;
    border: none;
    border-radius: 8px;
    text-decoration: none;
    transition: background 0.2s;
}
.scan-button:hover {
    background: #0056b3;
}
.isbn-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}
.isbn-card {
    background: #ffffff;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    text-align: left;
}