body {
    font-family: 'Arial', sans-serif;
    background-color: #121212;
    color: #ffffff;
    margin: 0;
    padding: 20px;
    overflow-x: hidden;
}
#sidebar {
    position: fixed;
    top: 0;
    left: -300px;
    width: 300px;
    height: 100%;
    background-color: #333;
    color: white;
    transition: left 0.3s ease;
    padding: 20px;
    z-index: 1000;
    box-shadow: 2px 0 15px rgba(0, 0, 0, 0.5);
}
#sidebar.open {
    left: 0;
}
#main {
    padding: 20px;
    margin-left: 320px;
    transition: margin-left 0.3s ease;
}
button {
    margin-top: 20px;
    padding: 10px;
    font-size: 16px;
    background: #00ffcc;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}
button:hover {
    background: #00cc99;
}
.container {
    max-width: 800px;
    margin: auto;
    background: #1e1e1e;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0, 255, 204, 0.5);
    display: none;
}
select, input[type="color"], input[type="number"], input[type="text"], input[type="password"] {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: none;
    border-radius: 25px;
    background: #00ffcc;
    color: #121212;
    font-size: 16px;
    transition: background 0.3s;
}
select:hover, input[type="color"]:hover, input[type="number"]:hover, input[type="text"]:hover, input[type="password"]:hover {
    background: #00cc99;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
th, td {
    padding: 10px;
    border: 1px solid #444;
    text-align: center;
}
th {
    background-color: #00ffcc;
    color: #121212;
}
tbody tr:nth-child(even) {
    background-color: #1e1e1e;
}
.settings {
    display: none;
    margin-top: 20px;
    padding: 20px;
    background: #1e1e1e;
    border-radius: 8px;
}
.logout-button {
    position: fixed;
    right: 10px;
    top: 20px;
    background: transparent;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
    color: #00ffcc;
    font-size: 16px;
    display: none;
}
.chart-container {
    position: relative;
    width: 100%;
    height: 300px;
    margin-bottom: 20px;
    border-radius: 5px;
    background: #2e2e2e;
    box-shadow: 0 0 10px rgba(0, 255, 204, 0.5);
}
@media (max-width: 768px) {
    #sidebar {
        width: 250px;
    }
    #main {
        margin-left: 270px;
    }
    button, select, input {
        font-size: 14px;
    }
}