body {
    display: flex;
    flex-direction: column;
}

header {
    text-wrap: balance;
    background: var(--secondary);
    text-align: center;
    padding: 1.5rem;
    border-radius: 0 0 2rem 2rem;
    display: grid;
    gap: 1em;
    grid-template-columns: repeat(2, 1fr);
    grid-template-areas:
        "return toggle"
        "search search";
    align-items: center;
}

header .return {
    width: fit-content;
    height: fit-content;
    grid-area: return;
}

header .toggle {
    grid-area: toggle;
    display: flex;
    background: var(--background);
    border: 2px solid var(--primary);
    border-radius: 0.5rem;
    width: 100%;
    max-width: 12rem;
    justify-self: end;
    height: fit-content;
}

header .toggle input {
    display: none;
}

header .toggle label {
    padding: 0.5em 1.5em;
    border: 1px solid transparent;
    font-size: 0.8rem;
    background: var(--background);
    text-align: center;
    align-content: center;
    cursor: pointer;
    transition: all 100ms ease-out;
    flex: 1;
    border-radius: 0.5rem;
    opacity: 0.75;
}

header .toggle input:not(:checked) + label:hover {
    opacity: 1;
}

header .toggle input:checked + label {
    opacity: 1;
    border-color: var(--accent);
    box-shadow: 0 0 4px 1px var(--accent);
    z-index: 1;
}

header .search {
    grid-area: search;
    max-width: 50rem;
}

header:has(.toggle input#radioTag:checked) .search .idsearch {
    display: none;
}
header:has(.toggle input#radioId:checked) .search .tagsearch {
    display: none;
}

.search-field {
    position: relative;
}

.search-field:has(.search-results:not(:empty)) input {
    border-radius: 0.5em 0.5em 0 0;
}

.search-results {
    position: absolute;
    bottom: 0;
    left: 0;
    translate: 0 calc(100% - 2px);
    z-index: 10;
    width: 100%;
    border: 1px solid var(--accent);
    border-radius: 0 0 0.5em 0.5em;
    box-shadow: 0.5rem 0 0.5rem black;
}

.search-results:empty {
    display: none;
}

.tagtab {
    display: block;
    width: 100%;
    border-radius: 0;
    cursor: pointer;
    box-shadow: none;
    transition: all 100ms ease-out;
}

.tagtab:is(:hover, :focus) {
    box-shadow: 0 2px var(--accent);
    color: var(--accent);
}

.tagtab:last-of-type {
    border-radius: 0 0 0.5em 0.5em;
}

main {
    text-align: center;
    padding: 1.5rem;
    max-width: fit-content;
    align-self: center;
    flex-grow: 1;
}

footer {
    width: 100%;
    text-align: center;
    padding: 0.5em;
    background: var(--secondary);
    margin-top: 5rem;
}

#btnTop {
    display: none; /* changed by js */
    min-width: 4rem;
    padding: 0.75em;
    aspect-ratio: 1;
    position: fixed;
    right: 0.75rem;
    bottom: 0.75rem;
    fill: var(--text);
    place-content: center;
    transition: all 100ms ease-out;
}

@media (min-width: 750px) {
    header {
        grid-template-columns: repeat(3, 1fr);
        grid-template-areas: "return search toggle";
    }
}