body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

body.light {
    background: #f7f7f7;
    color: #222;
}

body.dark {
    background: #1c1c1c;
    color: #f5f5f5;
}

.container {
    max-width: 1000px;
    margin: 20px auto;
    padding: 0 10px;
}

.nav {
    display: flex;
    justify-content: space-between;
    padding: 10px;
    background: #333;
    color: #fff;
}

.nav a {
    color: #fff;
    margin-right: 10px;
    text-decoration: none;
}

.nav a:hover {
    text-decoration: underline;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 15px;
}

th, td {
    border: 1px solid #ccc;
    padding: 6px;
    text-align: left;
}

.alert {
    padding: 8px;
    margin-bottom: 10px;
}

.alert-error {
    background: #ffdddd;
    color: #a00;
}

.alert-success {
    background: #ddffdd;
    color: #0a0;
}

.ticket-messages {
    border: 1px solid #ccc;
    padding: 10px;
    margin-bottom: 15px;
}

.ticket-message {
    margin-bottom: 10px;
    padding: 5px;
}

.ticket-message.admin {
    background: #eef;
}

.ticket-message.user {
    background: #efe;
}