/* 文章导航样式 */
.post-nav-wrapper {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 2rem;
}

.nav-item {
    flex: 1;
    min-width: 0;
    padding: 0.75rem 1rem;
    background: var(--bg-light);
    border-radius: 6px;
    transition: all 0.3s ease;
    border: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.nav-item:hover {
    background: var(--bg-light-hover);
    border-color: var(--text-theme);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-bottom: 0.15rem;
    font-weight: 500;
}

.nav-content a {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: block;
    line-height: 1.2;
}

.nav-content a:hover {
    color: var(--text-theme);
}

.nav-prev .nav-content {
    padding-left: 1.25rem;
    position: relative;
}

.nav-prev .nav-content::before {
    content: '‹';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
    color: var(--text-theme);
}

.nav-next .nav-content {
    padding-right: 1.25rem;
    text-align: right;
    position: relative;
}

.nav-next .nav-content::after {
    content: '›';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
    color: var(--text-theme);
}

@media (max-width: 768px) {
    .post-nav-wrapper {
        flex-direction: column;
        gap: 0.5rem;
    }

    .nav-item {
        padding: 0.625rem 0.875rem;
    }

    .nav-content a {
        font-size: 0.8rem;
    }

    .nav-prev .nav-content,
    .nav-next .nav-content {
        padding-left: 0;
        padding-right: 0;
    }

    .nav-prev .nav-content::before,
    .nav-next .nav-content::after {
        position: static;
        transform: none;
        margin: 0 0.25rem;
    }

    .nav-prev .nav-content::before {
        content: '‹ ';
    }

    .nav-next .nav-content::after {
        content: ' ›';
    }
}