:root {
    --main-bg-color: #000; 
    --secondary-bg-color: #222; 
    --tertiary-bg-color: #333;

    --main-text-color: #fff; 
    --secondary-text-color: #ddd; 
    --tertiary-text-color: #ccc; 

    --main-highlight-text-color: #C00; 

    --hover-bg-color: #222; 
    
    --main-accent-color: #f00; 
    --secondary-accent-color: #D00; 
}

body, html {
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background-color: var(--main-bg-color);
    scroll-behavior: smooth;
}

/* Utility: visually hide content but keep it available to screen readers */
.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.advert{
    height: 250px;
    width: 350px;
    background-color: transparent;
    color: black;
    margin: auto;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Ensure sponsor images scale responsively in adverts (desktop) */
.advert .sponsor-image {
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: block;
    margin: 0 auto;
    box-sizing: border-box;
    overflow: hidden;
}

.rgt_text {
    color: var(--main-highlight-text-color);
    font-weight: bold;
}