.riddle-collections {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--space-4);
}

.riddle-collection {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    color: inherit;
    text-decoration: none;
}

.riddle-collection:hover {
    border-color: var(--brand);
}

.riddle-count {
    margin-left: 0.35rem;
    color: var(--muted);
    font-weight: 600;
}

.riddle-list {
    display: grid;
    gap: var(--space-4);
}

@media (min-width: 860px) {
    .riddle-list {
        grid-template-columns: 1fr 1fr;
        align-items: start;
    }
}

.riddle-id {
    margin: 0;
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 700;
}

.riddle-text {
    margin: var(--space-2) 0 var(--space-3);
    white-space: pre-line;
    font-size: 1.05rem;
    line-height: 1.45;
}

.riddle-answer summary {
    display: inline-flex;
    cursor: pointer;
    list-style: none;
    border-radius: 999px;
    padding: 0.4rem 0.9rem;
    background: var(--brand);
    color: var(--brand-contrast);
    font-weight: 700;
}

.riddle-answer summary::-webkit-details-marker {
    display: none;
}

.riddle-answer .when-open {
    display: none;
}

.riddle-answer[open] .when-closed {
    display: none;
}

.riddle-answer[open] .when-open {
    display: inline;
}

.riddle-reveal {
    display: none;
    margin-top: var(--space-3);
}

.riddle-answer[open] .riddle-reveal {
    display: block;
}

.riddle-words {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.riddle-card .letter-tiles {
    justify-content: flex-start;
    gap: 0.3rem;
}

.riddle-card .letter-tile {
    width: clamp(1.7rem, 6vw, 2.25rem);
    font-size: 1rem;
}

.riddle-card .letter-tile-char {
    visibility: hidden;
}

.riddle-answer[open] .letter-tile {
    background: var(--tile-correct);
    color: var(--tile-text);
    border-color: transparent;
    box-shadow: inset 0 -3px 0 rgba(0, 0, 0, 0.18);
}

.riddle-answer[open] .letter-tile-char {
    visibility: visible;
}

@media (prefers-reduced-motion: no-preference) {
    .riddle-answer.is-animated .letter-tile {
        transform: rotateX(90deg);
        opacity: 0;
    }

    .riddle-answer.is-animated.is-open .letter-tile {
        transform: none;
        opacity: 1;
        transition: transform 0.28s ease, opacity 0.28s ease, background 0.28s ease;
    }
}

.riddle-plain-answer {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 800;
}

.riddle-word-link {
    margin: var(--space-3) 0 0;
}

.riddle-more {
    margin: var(--space-4) 0;
}

.riddle-prose :first-child {
    margin-top: 0;
}

.riddle-prose p,
.riddle-prose ul,
.riddle-prose ol {
    margin: 0 0 var(--space-3);
}

.riddle-prose h2,
.riddle-prose h3 {
    margin: var(--space-4) 0 var(--space-2);
    font-size: 1.2rem;
}