body {
    margin: 0;
    font-family: serif;
}

h1 {
    margin: 0;
    padding: 10px;
    background: #000;
    color: #fff;
    font-size: 1.2em;
}

.users {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px;
    background: #eee;
    align-items: center;
}

.users-label {
    font-weight: bold;
    margin-right: 10px;
}

.user-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.user-name {
    font-weight: 500;
}

.color-btn {
    width: 24px;
    height: 24px;
    border: 1px solid #666;
    cursor: pointer;
}

.color-btn.selected {
    outline: 2px solid #000;
    outline-offset: 1px;
}

.custom-btn {
    width: 24px;
    height: 24px;
    border: 1px solid #666;
    cursor: pointer;
    padding: 0;
    border-radius: 50%;
    overflow: hidden;
}

.custom-btn input[type="color"] {
    width: 100%;
    height: 100%;
    border: none;
    cursor: pointer;
    padding: 0;
}

.container {
    display: flex;
    height: calc(100vh - 90px);
}

.panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 10px;
}

label {
    font-weight: bold;
    margin-bottom: 5px;
}

.output-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 5px;
}

#copyBtn {
    padding: 2px 10px;
}

textarea {
    flex: 1;
    width: 100%;
    resize: none;
}

#output {
    flex: 1;
    background: #f5f5f5;
    overflow-y: auto;
    white-space: pre-wrap;
}