:root {
    color-scheme: light;
    
    --color-bg: #3c3b3b;
    --color-text: #333338;
    --color-accent: oklch(65% 0.25 240);
    --border-color: oklch(50% 0.13 250);
}
html {
    font-family: system-ui, sans-serif;
    color: var(--color-text);
    scroll-behavior: smooth;
    accent-color: var(--color-accent);
    text-align: center;
}
body {
    margin: 0;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    background-color: #f5f5f5; 
    min-height: 100vh;
}
h1 {
    margin-top: 10px;
    line-height: 1.1;
    text-wrap: balance;
    display: inline-block;
    background-color: color-mix(in oklch, var(--color-bg), canvas 85%);
    color: var(--color-text);
    padding: 0.25em 0.6em;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
    font-size: 2.1rem;
}
#slider-container, #chart text {
    font-family: inherit;
}
#chart-container {
    width: 90%;
    max-width: 960px;
    margin: 0 auto 10px auto;
}
#slider-container {
    margin-top: 0px;
    width: 90%;
    max-width: 600px;
    display: flex;
    flex-direction: column;
    align-items: center;
}
input[type="range"] {
    width: 100%;
    height: 8px;
    background: color-mix(in oklch, var(--color-bg), canvas 85%);
    border-radius: 4px;
    outline: none;
    margin-bottom: 10px;
    transition: background 0.2s;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    transition: transform 0.15s ease;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}
input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}
input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    transition: transform 0.15s ease;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}
#week-display {
    line-height: 1.1;
    text-wrap: balance;
    display: inline-block;
    background-color: color-mix(in oklch, var(--color-bg), canvas 85%);
    color: var(--color-text);
    padding: 0.25em 0.6em;
    border-radius: 0.5rem;
    font-weight: bold;
    margin-top: 5px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
    font-size: 16px;
}
#line-tooltip {
    position: absolute;
    pointer-events: none;
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.5rem 0.75rem;
    font-family: system-ui, sans-serif;
    font-size: 14px;
    color: var(--color-text);
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    z-index: 10;
    display: none;
    white-space: nowrap;
    transition: opacity 0.2s ease;
}
#legend-and-toggle {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    background-color: color-mix(in oklch, var(--color-bg), canvas 85%);
    padding: 8px 16px;
    border-radius: 0.5rem;
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
    width: fit-content;
    margin-bottom: 15px;
}
#band-select-container {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-left: 12px;
    border-left: 2px solid var(--border-color);
}
#band-label {
    font-family: system-ui, sans-serif;
    font-weight: bold;
    color: var(--color-text);
}
#band-select {
    font-family: system-ui, sans-serif;
    font-size: 15px;
    padding: 4px 8px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: white;
    color: var(--color-text);
    cursor: pointer;
    transition: box-shadow 0.2s ease;
}
#band-select:hover {
    box-shadow: 0 0 0 2px var(--color-accent);
}
#legend-container {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 12px;
}
.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: system-ui, sans-serif;
    font-size: 14px;
    color: var(--color-text);
}
.legend-color {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    border: 1px solid #ccc;
}
#band-select-container label, #band-select-container select {
    font-family: system-ui, sans-serif;  
    font-weight: bold;
    color: var(--color-text);
    font-size: 16px;
} 
#band-select {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 4px 8px;
    cursor: pointer;
    transition: box-shadow 0.2s ease;
}