.back-arrow {
    position: fixed;
    top: 1.5rem;
    left: 1.5rem;
    z-index: 50;
    padding: 0.75rem;
    color: #000000;
    text-decoration: none;
    font-size: 1.5rem;
    font-family: "Courier New", Courier, monospace;
    transition: opacity 0.2s ease;
}

.back-arrow:hover {
    opacity: 0.6;
}

.dark .back-arrow {
    color: #ffffff;
}

.prose {
    font-size: 1.125rem;
    line-height: 1.8;
    max-width: 680px;
}

.prose p {
    margin-bottom: 1.5rem;
}

.prose code {
    background: #f4f4f4;
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    font-size: 0.95em;
}

.dark .prose code {
    background: #1a1a1a;
}

.prose pre {
    background: #1a1a1a;
    color: #e0e0e0;
    padding: 1.25rem;
    border-radius: 4px;
    overflow-x: auto;
    margin: 2rem 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

.prose pre code {
    background: none;
    padding: 0;
    color: inherit;
}

.dark .prose pre {
    background: #111111;
}

.prose strong {
    font-weight: 600;
}

.prose em {
    font-style: italic;
}

.definition {
    margin: 2rem 0;
    padding: 1.5rem;
    border-left: 3px solid #000;
    background: #fafafa;
}

.dark .definition {
    border-left-color: #fff;
    background: #0a0a0a;
}

.definition .word {
    font-weight: 600;
    font-size: 1.25rem;
}

.definition .pronunciation {
    color: #666;
    margin-left: 0.5rem;
}

.dark .definition .pronunciation {
    color: #999;
}

.definition .pos {
    font-style: italic;
    margin-left: 0.5rem;
    color: #666;
}

.dark .definition .pos {
    color: #999;
}

.definition .meaning {
    display: block;
    margin-top: 0.5rem;
    padding-left: 1rem;
}

.code-block {
    position: relative;
}

.copy-btn {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: #333;
    border: none;
    color: #999;
    padding: 0.4rem 0.6rem;
    font-size: 0.75rem;
    font-family: "Courier New", Courier, monospace;
    cursor: pointer;
    border-radius: 3px;
    transition: color 0.15s ease, background 0.15s ease;
}

.copy-btn:hover {
    color: #fff;
    background: #444;
}

.copy-btn.copied {
    color: #4ade80;
}