* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        sans-serif;
    background-color: #f8f9fa;
    padding: 10px;
    line-height: 1.6;
}

.container {
    max-width: 100%;
    margin: 0 auto;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.header {
    background: linear-gradient(135deg, #3c3c3c 0%, #ff5a00 100%);
    color: white;
    padding: 20px;
    text-align: center;
}

.header h1 {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.header p {
    font-size: 0.9rem;
    opacity: 0.9;
}

.chart-container {
    padding: 15px 10px;
    position: relative;
}

.chart-wrapper {
    position: relative;
    width: 100%;
    height: 200px;
}

canvas {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

canvas.loaded {
    opacity: 1;
}

.reasoning-step {
    display: none;
    padding: 15px 20px;
    font-size: 12px;
    color: #666;
}

.loading-dots {
    display: inline-block;
    min-width: 20px;
}

.chart-container-hidden {
    display: none;
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.2rem;
    }

    .header p {
        font-size: 0.8rem;
    }

    .chart-container {
        padding: 10px;
    }
}