:root {
    --color-bg-dark: #281323;
    --color-bg-panel: rgba(57, 51, 87, 1);
    --color-bg-panel-open: rgba(57, 51, 87, 0.5);
    --color-accent: #fbe36d;
    --color-text-light: #f8e4a9;
    --color-text-dark: #281323;
    --transition-fast: 0.3s ease;
    --transition-med: 0.5s ease;
    --radius: 12px;

    /* default brightness level */
    --brightness: 1;
}

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

html, body {
    height: 100%;
    font-family: "Pirata One", system-ui;
    background:
            url('../images/moon-and-sun.jpg') repeat,
            linear-gradient(0deg, #7a7777, #7A7777);
    background-size: auto;
    background-blend-mode: multiply;
    color: var(--color-text-light);

    /* brightness controlled by slider */
    filter: brightness(var(--brightness));
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover, a:focus {
    color: var(--color-text-light);
}

ul {
    list-style: none;
}
img {
    display: block;
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 3rem;
}