body {
    font-family: 'Segoe UI', sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 960px;
    margin: 40px auto;
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

h1 {
    text-align: center;
    color: #333;
}

form {
    margin-bottom: 20px;
}

input[type="text"] {
    width: calc(100% - 20px);
    padding: 10px;
    margin-top: 10px;
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

button {
    padding: 10px 15px;
    margin: 5px;
    border: none;
    border-radius: 5px;
    background-color: #4285f4;
    color: white;
    cursor: pointer;
}

button:hover {
    background-color: #3367d6;
}

.menu {
    text-align: center;
    margin-bottom: 20px;
}

.tab-content {
    display: none;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 30px;
}

table, th, td {
    border: 1px solid #ddd;
}

th, td {
    padding: 12px;
    text-align: left;
}

th {
    background-color: #f1f1f1;
}

p {
    margin: 10px 0;
    line-height: 1.5;
}