body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    margin: 0;
    padding: 20px;
    background: #f5f5f5;
    height: 100vh;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
}

.header {
    background: white;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.header-controls {
    display: flex;
    gap: 12px;
    align-items: center;
}

.region-label {
    font-size: 14px;
    font-weight: 500;
    color: #333;
}

.region-select {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    background: white;
}

.region-select:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.region-select:hover:not(:disabled) {
    border-color: #007bff;
}

.logout-btn {
    background: #dc3545;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.logout-btn:hover {
    background: #c82333;
}

.chat-container {
    background: white;
    border-radius: 8px;
    flex: 1;
    overflow: hidden;
    min-height: 0;
}

#quicksight-embed {
    width: 100%;
    height: 100%;
    border: none;
}