body {
    font-family: Arial, sans-serif;
    background: #f7f7f7;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 600px;
    margin: 40px auto;
    background: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    text-align: center;
}

h1 {
    color: #003366;
    margin-bottom: 20px;
    font-size: 28px;
    font-weight: 700;
}

input[type="text"] {
    width: 100%;
    padding: 14px;
    font-size: 18px;
    border: 1px solid #ccc;
    border-radius: 8px;
    margin-bottom: 20px;
}

button {
    width: 100%;
    padding: 14px;
    background: #007bff;
    color: white;
    font-size: 20px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

button:hover {
    background: #005fcc;
}

.result-box {
    margin-top: 25px;
    padding: 20px;
    background: #eef5ff;
    border-radius: 10px;
    text-align: left;
}

.result-box p {
    font-size: 18px;
    margin: 8px 0;
}

.book-btn {
    display: inline-block;
    margin-top: 15px;
    padding: 12px 20px;
    background: #28a745;
    color: white;
    font-size: 18px;
    font-weight: bold;
    border-radius: 8px;
    text-decoration: none;
}