* {
    box-sizing: border-box;
}
body {
    font-family: 'Segoe UI', sans-serif;
    background: #f4f4f4;
    margin: 0;
    padding: 0;
    color: #333;
}
.container {
    max-width: 1000px;
    margin: auto;
    background: #fff;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    border-radius: 8px;
    margin-top: 40px;
}
.login-container {
    max-width: 350px;
    margin: 100px auto;
    background: white;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.logo {
    width: 80px;
    margin-bottom: 20px;
}
input, select, button {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    font-size: 1em;
}
button {
    background: #007bff;
    color: #fff;
    border: none;
    cursor: pointer;
    border-radius: 4px;
}
button:hover {
    background: #0056b3;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    font-size: 0.95em;
}
th, td {
    padding: 12px;
    border: 1px solid #ccc;
    text-align: left;
}
th {
    background: #f0f0f0;
}
a.button {
    display: inline-block;
    background: #28a745;
    color: white;
    padding: 10px 15px;
    margin-top: 10px;
    border-radius: 4px;
}
a.button:hover {
    background: #218838;
}
@media screen and (max-width: 768px) {
    .container, .login-container {
        margin: 20px;
        padding: 15px;
    }
    table, thead, tbody, th, td, tr {
        display: block;
    }
    th {
        display: none;
    }
    td {
        position: relative;
        padding-left: 50%;
    }
    td:before {
        content: attr(data-label);
        position: absolute;
        left: 10px;
        font-weight: bold;
    }
    .menu {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 30px;
}
.btn {
    display: inline-block;
    background-color: #007bff;
    color: white;
    padding: 15px;
    text-align: center;
    text-decoration: none;
    font-size: 1.1em;
    border-radius: 6px;
}
.btn.logout {
    background-color: #dc3545;
}
.btn:hover {
    opacity: 0.9;
}
}