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

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: #f5f7fa;
    color: #333;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 20px;
}

.container {
    max-width: 800px;
    width: 100%;
}

h1 {
    color: #1e4b69;
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 4px;
}

.subtitle {
    text-align: center;
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 24px;
}

.controls {
    background: #fff;
    border-radius: 12px;
    padding: 20px 24px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    margin-bottom: 20px;
}

.slider-group label {
    font-weight: 600;
    color: #1e4b69;
    font-size: 0.95rem;
    display: block;
    margin-bottom: 8px;
}

.slider-row {
    display: flex;
    align-items: center;
    gap: 16px;
}

.slider-row input[type="range"] {
    flex: 1;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: linear-gradient(to right, #e74c3c, #f39c12, #27ae60);
    border-radius: 3px;
    outline: none;
}

.slider-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #1e4b69;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.slider-row input[type="range"]::-moz-range-thumb {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #1e4b69;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.slider-value {
    font-size: 1.4rem;
    font-weight: 700;
    color: #1e4b69;
    min-width: 50px;
    text-align: right;
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 4px;
    font-size: 0.75rem;
    color: #999;
}

.chart-wrapper {
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    margin-bottom: 20px;
}

canvas {
    max-height: 350px;
}

.metrics-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.metric-card {
    background: #fff;
    border-radius: 12px;
    padding: 16px;
    text-align: center;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.metric-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: #1e4b69;
    margin-bottom: 4px;
}

.metric-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: #555;
    margin-bottom: 4px;
}

.metric-desc {
    font-size: 0.75rem;
    color: #999;
    line-height: 1.3;
}

@media (max-width: 600px) {
    h1 { font-size: 1.3rem; }

    .metrics-row {
        grid-template-columns: 1fr;
    }

    .slider-value {
        font-size: 1.1rem;
    }
}