body {
    font-family: system-ui, sans-serif;
    margin: 0;
    background: #111;
    color: #eee;
}

.app {
    margin: 0 auto;
    padding: 24px;
}

.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.tab {
    padding: 10px 18px;
    border: 1px solid #444;
    border-radius: 999px;
    background: #1c1c1c;
    color: #bbb;
}

.tab.active {
    background: #2f6fed;
    border-color: #2f6fed;
    color: #fff;
}

.panel {
    display: none;
}

.panel.active {
    display: block;
}

textarea {
    flex: 1;
    min-height: 60px;
    resize: vertical;
    border-radius: 8px;
    padding: 12px;
    background: #222;
    color: #eee;
    border: 1px solid #444;
}

button {
    padding: 0 20px;
    border: 0;
    border-radius: 8px;
    cursor: pointer;
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

select {
    background: #222;
    color: #eee;
    border: 1px solid #444;
    border-radius: 8px;
    padding: 8px;
    margin-bottom: 12px;
}