#pre-registration-form {
    max-width: 800px;
    margin: 20px auto;
}

#calendar {
    margin-bottom: 20px;
}

.pre-registration-management-form {
    max-width: 600px;
    margin: 20px auto;
    padding: 20px;
    border: 1px solid #ddd;
    background: #f9f9f9;
}

.pre-registration-management-form h2,
.pre-registration-management-form h3 {
    margin-top: 0;
}

.pre-registration-management-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.pre-registration-management-form input[type="email"],
.pre-registration-management-form input[type="text"],
.pre-registration-management-form input[type="datetime-local"] {
    width: 100%;
    padding: 8px;
    margin-bottom: 10px;
    border: 1px solid #ddd;
}

.pre-registration-management-form .button {
    margin-top: 10px;
}

.notice {
    padding: 10px;
    margin-bottom: 20px;
    border-left: 4px solid;
}

.notice.notice-success {
    border-color: #46b450;
    background: #f3faf4;
}

.notice.notice-error {
    border-color: #dc3232;
    background: #fbeaea;
}

.connection-status {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 10px;
}

.connection-status.connected {
    background-color: green;
}

.connection-status.disconnected {
    background-color: red;
}

#websocket-status {
    font-weight: bold;
}