:root {
            --widget-bg: #ffffff;
            --widget-border: #e0e0e0;
            --widget-shadow: rgba(0, 0, 0, 0.12);
            --text-primary: #1a1a1a;
            --text-secondary: #666666;
            --positive-color: #10b981;
            --negative-color: #ef4444;
            --accent-color: #3b82f6;
            --accent-hover: #2563eb;
            --btn-bg: #f8fafc;
            --btn-border: #e2e8f0;
            --transition-speed: 0.3s;
        }

        body { 
            margin: 0; 
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            background: #f5f5f5;
        }

        .page-header {
            background: white;
            padding: 20px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            margin-bottom: 20px;
        }

        .page-header h1 {
            margin: 0;
            color: var(--text-primary);
        }

        .page-header p {
            margin: 5px 0 0;
            color: var(--text-secondary);
        }

        .etf-widget {
            background: var(--widget-bg);
            border: 1px solid var(--widget-border);
            border-radius: 12px;
            box-shadow: 0 4px 6px -1px var(--widget-shadow), 0 2px 4px -1px var(--widget-shadow);
            padding: 16px;
            display: flex;
            flex-direction: column;
            transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
            width: 100%;
            height: 400px;
        }

        .etf-widget:hover {
            box-shadow: 0 10px 15px -3px var(--widget-shadow), 0 4px 6px -2px var(--widget-shadow);
        }

        .etf-widget.paused {
            border-color: var(--accent-color);
        }

        .widget-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 4px;
        }

        .widget-title {
            margin: 0;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .widget-controls {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .control-btn {
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
            border-radius: 4px;
            color: var(--text-secondary);
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .control-btn:hover {
            background: var(--btn-bg);
            color: var(--accent-color);
        }

        .control-btn:active {
            transform: scale(0.95);
        }

        .widget-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            opacity: 1;
            transition: opacity 0.4s ease-in-out;
        }

        .widget-content.loading {
            opacity: 0.6;
            pointer-events: none;
        }

        .etf-info {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 4px;
        }

        .etf-info-group {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .etf-symbol {
            font-weight: 700;
            font-size: 18px;
        }

        .etf-name {
            font-size: 12px;
            color: var(--text-secondary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 150px;
        }

        .etf-price {
            font-size: 18px;
            font-weight: 700;
        }

        .etf-change {
            font-size: 12px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 8px;
            border-radius: 6px;
        }

        .etf-change.positive {
            color: var(--positive-color);
            background: rgba(16, 185, 129, 0.1);
        }

        .etf-change.negative {
            color: var(--negative-color);
            background: rgba(239, 68, 68, 0.1);
        }

        .return-label {
            font-size: 10px;
            color: var(--text-secondary);
            margin-top: 2px;
        }

        .chart-container {
            flex: 1;
            margin: 8px 0;
            position: relative;
            min-height: 0;
        }

        .timeframe-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 6px;
            margin: 8px 0;
        }

        .timeframe-btn {
            padding: 6px 12px;
            font-size: 11px;
            font-weight: 600;
            border: 1px solid var(--btn-border);
            background: var(--btn-bg);
            color: var(--text-secondary);
            cursor: pointer;
            border-radius: 6px;
            transition: all 0.2s ease;
            user-select: none;
        }

        .timeframe-btn:hover {
            background: var(--btn-bg);
            border-color: var(--accent-color);
            color: var(--accent-color);
        }

        .timeframe-btn.active {
            background: var(--accent-color);
            color: white;
            border-color: var(--accent-color);
        }

        .timeframe-btn:active {
            transform: scale(0.95);
        }

        .widget-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid var(--widget-border);
        }

        .cycle-status {
            font-size: 11px;
            color: var(--text-secondary);
        }

        .etf-indicator {
            display: flex;
            gap: 4px;
        }

        .indicator-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--btn-border);
            transition: background 0.3s ease;
        }

        .indicator-dot.active {
            background: var(--accent-color);
        }

        .loading-state, .error-state {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-height: 200px;
            text-align: center;
        }

        .loading-spinner {
            width: 40px;
            height: 40px;
            border: 3px solid var(--btn-border);
            border-top-color: var(--accent-color);
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        .error-state {
            color: var(--negative-color);
            font-size: 13px;
        }

        .api-status {
            display: inline-block;
            padding: 2px 8px;
            border-radius: 12px;
            font-size: 11px;
            font-weight: 600;
            margin-left: 8px;
        }

        .api-status.connected {
            background: rgba(16, 185, 129, 0.1);
            color: var(--positive-color);
        }

        .api-status.disconnected {
            background: rgba(239, 68, 68, 0.1);
            color: var(--negative-color);
        }