body {
    background: #181a1b;
    color: #f1f1f1;
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
}

.tab-bar {
    display: flex;
    background: #23272a;
    border-bottom: 1px solid #333;
}

.tab-button {
    flex: 1;
    padding: 16px 0;
    text-align: center;
    cursor: pointer;
    background: none;
    border: none;
    color: #f1f1f1;
    font-size: 1.1em;
    transition: background 0.2s;
}

.tab-button.active, .tab-button:hover {
    background: #2c2f33;
    color: #00bfff;
}

.tab-content {
    padding: 32px;
    display: none;
}

.tab-content.active {
    display: block;
}