:root {
    --primary-color: #007bff;
    --primary-color-hover: #0056b3;
    --light-gray: #f4f4f4;
    --medium-gray: #ccc;
    --dark-gray: #333;
    --white: #fff;
    --border-radius: 8px;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background-color: #f0f2f5;
    color: #333;
    margin: 0;
    padding: 0;
}

main {
    /* This is now the main container for controls and chart */
    padding: 0 10px;
}

.controls-container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.chart-container {
    position: relative; /* For positioning elements inside if needed later */
    width: 100%;
    max-width: 1200px;
    margin: 0 auto 20px;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    box-sizing: border-box;
}

.month-selector-container {
    display: flex;
    align-items: center;
}

#month-selector {
    padding: 5px;
    border-radius: 5px;
    border: 1px solid #ccc;
    font-size: 14px;
}

.scale-toggle-container {
    display: flex;
    border: none;
    border-radius: 4px;
    overflow: hidden;
    margin-left: 10px;
    vertical-align: middle;
}

.scale-btn {
    background-color: #f0f0f0;
    border: none;
    padding: 4px 8px; /* Slightly different padding for text */
    cursor: pointer;
    transition: background-color 0.3s;
    font-size: 14px;
    color: var(--dark-gray);
}

.scale-btn:hover {
    background-color: #e0e0e0;
}

.scale-btn.active {
    background-color: var(--primary-color);
    color: var(--white);
    cursor: default;
}

.scale-btn:not(.active):hover {
    background-color: #d0d0d0;
}

.scale-btn:first-child {
    border-right: 1px solid var(--medium-gray);
}

.tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 15px;
    cursor: pointer;
}
.tabs img {
    height: 50px;
    cursor: pointer;
    opacity: 0.5;
    transition: all 0.3s ease;
    border: 3px solid transparent;
    border-radius: var(--border-radius);
}
.tabs img.active {
    opacity: 1;
}
.info-links {
    margin-top: 20px;
    text-align: center;
    font-size: 1rem;
    word-break: break-all;
}
.info-links a {
    color: #337ab7;
    text-decoration: none;
}

.info-links a:hover {
    text-decoration: underline;
}

footer {
    text-align: center;
    font-size: 14px;
    color: #666;
    margin: 0 auto 20px;
}

/* Responsive adjustments */
@media (min-width: 768px) {
    main {
        padding: 0 30px;
    }
}

@media (max-width: 600px) {
    body {
        align-items: flex-start;
        padding: 5px;
    }
    .chart-container {
        padding: 10px;
    }
    .tabs img {
        height: 40px;
    }
    .info-links {
        font-size: 0.95rem;
        padding: 0 5px;
    }
}
@media (max-width: 400px) {
    .tabs {
        gap: 10px;
    }
    .tabs img {
        height: 35px;
    }
    .info-links {
        font-size: 0.85rem;
        padding: 0 2px;
    }
    .info-links a {
        margin: 0 2px;
    }
}