body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    padding: 20px;
}

.container {
    max-width: 900px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h2 { color: #333; }

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

table, th, td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: center;
}

th { background-color: #007bff; color: white; }

.form-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
    padding: 15px;
    border: 1px solid #eee;
    border-radius: 5px;
}

input, select {
    padding: 8px;
    width: 100%;
    box-sizing: border-box;
}

button {
    background-color: #28a745;
    color: white;
    padding: 10px 20px;
    border: none;
    cursor: pointer;
    grid-column: 1 / -1;
}

button:hover { background-color: #218838; }