body {
    font-family: Arial, sans-serif;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f5f5f5;
}

.container {
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

h1 {
    color: #333;
    margin-bottom: 30px;
}

.input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
}

input[type="text"] {
    flex: 1;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

input[type="text"]:focus {
    outline: none;
    border-color: #4CAF50;
}

button {
    padding: 12px 30px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
}

button:hover {
    background-color: #45a049;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th {
    background-color: #4CAF50;
    color: white;
    padding: 12px;
    text-align: left;
    font-weight: bold;
}

td {
    padding: 12px;
    border-bottom: 1px solid #ddd;
}

tr:hover {
    background-color: #f5f5f5;
}

.empty-message {
    text-align: center;
    padding: 40px;
    color: #999;
}