:root {
    --color-number: #c03c3c;
    --color-counter: #2063ba;
    --color-noun: #388d51;
}

[data-theme='dark'] {
    --color-number: #e66868;
    --color-counter: #7a9ece;
    --color-noun: #8dc78e;
}

.strike-through {
    display: inline-flex;
    text-decoration-line: line-through;
    text-decoration-color: var(--color-number);
    text-decoration-thickness: 0.15em;
    white-space: nowrap;
}

.container {
    font-family: var(--sans-serif-font);
}

.number-chain {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.number-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
    border-radius: 0.5rem;
    background: var(--bg-0);
    padding: 1rem;
    width: calc(25% - 1rem);
    min-width: 8rem;
    text-align: center;
}

.number-unit:hover {
    background: var(--bg-1);
}

.number-unit:hover .western::before {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    border-radius: 0.25em;
    background: var(--bg-2);
    padding: 0.25em 0.5em;
    content: attr(data-full);
    font-size: 0.9em;
    white-space: nowrap;
}

.western {
    position: relative;
    margin-top: 0.5rem;
    color: var(--meta-color);
    font-size: 0.9rem;
}

.kanji {
    color: var(--text-color-high-contrast);
    font-weight: bold;
    font-size: 1.5rem;
}

.reading {
    margin-top: 0.25rem;
    color: var(--text-color);
    font-size: 0.9rem;
}

.definition {
    cursor: help;
    border-bottom: 1px dotted var(--meta-color);
    text-decoration: none;
}

.definition:hover {
    border-bottom-style: solid;
}

.number-unit {
    position: relative;
}

.number-unit .western::before {
    opacity: 0;
    pointer-events: none;
}

.number-unit:hover .western::before {
    opacity: 1;
}

#myriads .note {
    margin-top: 1.8rem;
    margin-bottom: 1.2rem;
    color: var(--meta-color);
    font-size: 0.8rem;
    text-align: center;
}

ruby {
    ruby-align: center;
    font-family: var(--sans-serif-font);
}

ruby rt {
    font-size: 0.7em;
    font-family: var(--sans-serif-font);
}

.ramu-content .number {
    color: var(--color-number);
}

.ramu-content .counter {
    color: var(--color-counter);
}

.ramu-content .noun {
    color: var(--color-noun);
}

.no-wrap {
    display: inline-flex;
    white-space: nowrap;
}

.audio-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0;
}

.audio-note {
    color: var(--meta-color);
    font-style: italic;
    font-size: 0.9rem;
}

#pwa-prompt {
    margin: 0 auto;
    width: 70%;
}

@media only screen and (max-width: 600px) {
    .audio-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    #pwa-prompt {
        width: 100%;
    }
}