body {
    font-family: system-ui, sans-serif;
    margin: 0;
    padding: 0;
    background: #f7f7f7;
    color: #333;
}

.header {
    background: #333;
    color: #fff;
    padding: 20px;
    text-align: center;
}

.main {
    max-width: 700px;
    margin: 40px auto;
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h1 {
    margin-top: 0;
}

.btn {
    display: inline-block;
    background: #5c6bc0;
    color: #fff;
    padding: 12px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    transition: background 0.3s;
}

.btn:hover {
    background: #3f51b5;
}

       body {
            margin: 0;
            display: flex;
            height: 100vh;
        }
        .sidebar {
            width: 220px;
            background: #2c2c2c;
            color: #fff;
            padding: 20px;
            box-sizing: border-box;
        }
        .sidebar h2 {
            margin-top: 0;
            font-size: 18px;
            margin-bottom: 20px;
        }
        .sidebar a {
            display: block;
            color: #fff;
            text-decoration: none;
            padding: 10px 5px;
            margin-bottom: 5px;
            border-radius: 4px;
        }
        .sidebar a:hover {
            background: #444;
        }
        .content {
            flex: 1;
            border: none;
        }
        .logout {
            margin-top: 40px;
            font-size: 14px;
        }

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

td, th {
    padding: 10px;
    border-bottom: 1px solid #ccc;
}

form {
    margin-bottom: 20px;
}

.danger {
    color: red;
}

input[type="text"] {
    padding: 6px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

button, .btn {
    padding: 6px 14px;
    border: none;
    background: #5c6bc0;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.2s;
}

button:hover, .btn:hover {
    background: #3f51b5;
}