.

src/components/post/MarkdownRenderer.tsx

@@ -1,57 +1,25 @@
 'use client';
 
-import React, { useState, useMemo } from 'react';
+import React, { useState } from 'react';
 import ReactMarkdown from 'react-markdown';
 import remarkGfm from 'remark-gfm';
-import remarkBreaks from 'remark-breaks';
-import remarkMath from 'remark-math';
-import rehypeSanitize, { defaultSchema } from 'rehype-sanitize';
-import rehypeSlug from 'rehype-slug';
-import rehypeKatex from 'rehype-katex';
-import rehypeAutolinkHeadings from 'rehype-autolink-headings';
+import rehypeSanitize from 'rehype-sanitize'; 
 import { Prism as SyntaxHighlighter } from 'react-syntax-highlighter';
 import { vscDarkPlus } from 'react-syntax-highlighter/dist/esm/styles/prism';
-import { Copy, Check, Terminal, ExternalLink, Info, AlertTriangle, XCircle, Lightbulb, Link as LinkIcon } from 'lucide-react';
+import { Copy, Check, Terminal, ExternalLink } from 'lucide-react';
 import { clsx } from 'clsx';
-import 'katex/dist/katex.min.css';
+import rehypeSlug from 'rehype-slug';
 
 interface MarkdownRendererProps {
   content: string;
 }
 
-// GitHub Style Alerts 설정
-const ALERT_VARIANTS = {
-  NOTE: { color: 'bg-blue-50 border-blue-500 text-blue-800', icon: Info, title: 'Note' },
-  TIP: { color: 'bg-green-50 border-green-500 text-green-800', icon: Lightbulb, title: 'Tip' },
-  IMPORTANT: { color: 'bg-purple-50 border-purple-500 text-purple-800', icon: AlertTriangle, title: 'Important' },
-  WARNING: { color: 'bg-yellow-50 border-yellow-500 text-yellow-800', icon: AlertTriangle, title: 'Warning' },
-  CAUTION: { color: 'bg-red-50 border-red-500 text-red-800', icon: XCircle, title: 'Caution' },
-};
-
 export default function MarkdownRenderer({ content }: MarkdownRendererProps) {
-  // Sanitize 스키마 확장
-  // 주의: 모든 태그에 style과 className을 허용하는 것은 보안상(XSS) 주의가 필요합니다.
-  const sanitizeSchema = useMemo(() => ({
-    ...defaultSchema,
-    attributes: {
-      ...defaultSchema.attributes,
-      '*': ['className', 'style'],
-      span: ['className', 'style'],
-      div: ['className', 'style'],
-    },
-    tagNames: [...(defaultSchema.tagNames || []), 'math', 'mi', 'mn', 'mo', 'msup', 'msub', 'mfrac', 'row'],
-  }), []);
-
   return (
-    <div className="markdown-content w-full max-w-none">
+    <div className="markdown-content">
       <ReactMarkdown
-        remarkPlugins={[remarkGfm, remarkBreaks, remarkMath]}
-        rehypePlugins={[
-          [rehypeSanitize, sanitizeSchema],
-          rehypeSlug,
-          [rehypeAutolinkHeadings, { behavior: 'wrap' }],
-          rehypeKatex
-        ]}
+        remarkPlugins={[remarkGfm]}
+        rehypePlugins={[rehypeSanitize, rehypeSlug]}
         components={{
           // 1. 코드 블록 커스텀
           code({ node, inline, className, children, ...props }: any) {
@@ -59,93 +27,26 @@ export default function MarkdownRenderer({ content }: MarkdownRendererProps) {
             const language = match ? match[1] : '';
             const codeString = String(children).replace(/\n$/, '');
 
-            // [수정] inline이 아니면 언어가 없어도 CodeBlock으로 처리 (기본값: text)
-            if (!inline) {
-              return <CodeBlock language={language || 'text'} code={codeString} />;
+            if (!inline && match) {
+              return (
+                <CodeBlock language={language} code={codeString} />
+              );
             }
 
             return (
-              <code className="bg-gray-100 text-pink-500 px-1.5 py-0.5 rounded-md text-[0.9em] font-mono font-medium mx-1 break-words border border-gray-200" {...props}>
+              <code 
+                className="bg-gray-100 text-red-500 px-1.5 py-0.5 rounded-md text-[0.9em] font-mono font-medium mx-1 break-words" 
+                {...props}
+              >
                 {children}
               </code>
             );
           },
 
-          // 2. 인용구 + GitHub Alerts 처리 (TypeScript 오류 수정 및 로직 개선)
-          blockquote({ children }: any) {
-            const childArray = React.Children.toArray(children);
-            const firstChild = childArray[0];
-            let alertType: keyof typeof ALERT_VARIANTS | null = null;
-
-            // [수정] 타입스크립트 안전성 확보 및 파싱 로직 강화
-            // React.isValidElement로 체크 후, ReactElement로 단언(assertion)하여 props 접근
-            if (React.isValidElement(firstChild)) {
-              const element = firstChild as React.ReactElement<any>;
-              
-              // 보통 blockquote > p 구조임
-              if (element.type === 'p' && element.props.children) {
-                // p 태그의 첫 번째 자식이 텍스트인지 확인
-                const content = element.props.children;
-                const firstText = Array.isArray(content) ? content[0] : content;
-
-                if (typeof firstText === 'string') {
-                  const match = firstText.match(/^\[!(NOTE|TIP|IMPORTANT|WARNING|CAUTION)\]/);
-                  if (match) {
-                    alertType = match[1] as keyof typeof ALERT_VARIANTS;
-                  }
-                }
-              }
-            }
-
-            // Alert 타입이 감지되면 스타일링된 컴포넌트 반환
-            if (alertType) {
-              const variant = ALERT_VARIANTS[alertType];
-              const Icon = variant.icon;
-
-              // [수정] [!NOTE] 텍스트를 안전하게 제거
-              const restContent = React.Children.map(children, (child, index) => {
-                if (index === 0 && React.isValidElement(child)) {
-                  const element = child as React.ReactElement<any>;
-                  const content = element.props.children;
-
-                  // 내용이 배열일 수도 있고 문자열일 수도 있음
-                  if (Array.isArray(content)) {
-                    // 첫 번째 텍스트 노드에서 [!NOTE] 부분만 제거
-                    const [first, ...rest] = content;
-                    if (typeof first === 'string') {
-                      const newText = first.replace(/^\[!(NOTE|TIP|IMPORTANT|WARNING|CAUTION)\]\s?/, '');
-                      return React.cloneElement(element, {
-                        ...element.props,
-                        children: [newText, ...rest]
-                      });
-                    }
-                  } else if (typeof content === 'string') {
-                    const newText = content.replace(/^\[!(NOTE|TIP|IMPORTANT|WARNING|CAUTION)\]\s?/, '');
-                    return React.cloneElement(element, {
-                      ...element.props,
-                      children: newText
-                    });
-                  }
-                }
-                return child;
-              });
-
+          // 2. 인용구
+          blockquote({ children }) {
             return (
-                <div className={clsx("my-6 rounded-lg border-l-4 p-4 shadow-sm", variant.color)}>
-                  <div className="flex items-center gap-2 font-bold mb-2 select-none">
-                    <Icon size={20} />
-                    <span>{variant.title}</span>
-                  </div>
-                  <div className="text-sm opacity-90 pl-7 [&>p]:mb-0">
-                    {restContent}
-                  </div>
-                </div>
-              );
-            }
-
-            // 일반 인용구
-            return (
-              <blockquote className="border-l-4 border-gray-300 bg-gray-50 pl-4 py-3 my-6 text-gray-600 rounded-r-lg italic shadow-sm">
+              <blockquote className="border-l-4 border-blue-500 bg-blue-50 pl-4 py-3 my-6 text-gray-700 rounded-r-lg italic shadow-sm">
                 {children}
               </blockquote>
             );
@@ -154,20 +55,12 @@ export default function MarkdownRenderer({ content }: MarkdownRendererProps) {
           // 3. 링크
           a({ href, children }) {
             const isExternal = href?.startsWith('http');
-            if (href?.startsWith('#')) {
-              return (
-                <a href={href} className="no-underline hover:underline text-gray-500 hover:text-blue-600 opacity-0 hover:opacity-100 transition-opacity ml-2" aria-hidden="true">
-                  <LinkIcon size={16} className="inline" />
-                </a>
-              )
-            }
-
             return (
               <a 
                 href={href} 
                 target={isExternal ? '_blank' : undefined}
                 rel={isExternal ? 'noopener noreferrer' : undefined}
-                className="text-blue-600 hover:text-blue-800 font-medium underline decoration-blue-300 hover:decoration-blue-800 underline-offset-4 inline-flex items-center gap-0.5 transition-all"
+                className="text-blue-600 hover:text-blue-800 font-medium underline-offset-4 hover:underline inline-flex items-center gap-0.5 transition-colors"
               >
                 {children}
                 {isExternal && <ExternalLink size={12} className="opacity-70" />}
@@ -179,89 +72,70 @@ export default function MarkdownRenderer({ content }: MarkdownRendererProps) {
           table({ children }) {
             return (
               <div className="overflow-x-auto my-8 rounded-lg border border-gray-200 shadow-sm">
-                <table className="w-full text-sm text-left text-gray-700 bg-white divide-y divide-gray-200">
+                <table className="w-full text-sm text-left text-gray-700 bg-white">
                   {children}
                 </table>
               </div>
             );
           },
           thead({ children }) {
-            return <thead className="text-xs text-gray-700 uppercase bg-gray-50">{children}</thead>;
+            return <thead className="text-xs text-gray-700 uppercase bg-gray-50 border-b border-gray-200">{children}</thead>;
           },
           th({ children }) {
-            return <th className="px-6 py-4 font-bold text-gray-900 bg-gray-50 border-b border-gray-200">{children}</th>;
+            return <th className="px-6 py-3 font-bold text-gray-900">{children}</th>;
           },
           td({ children }) {
-            return <td className="px-6 py-4 border-b border-gray-100 whitespace-pre-wrap hover:bg-gray-50 transition-colors">{children}</td>;
+            return <td className="px-6 py-4 border-b border-gray-100 whitespace-pre-wrap">{children}</td>;
           },
 
-          // 5. 이미지
+          // 5. 이미지 (비율 유지 및 중앙 정렬)
           img({ src, alt }) {
             return (
-              <figure className="block my-8 flex flex-col items-center justify-center group">
-                <div className="relative overflow-hidden rounded-xl shadow-md border border-gray-100">
+              // 🛠️ [Fix] flex-col 추가: 이미지와 캡션을 세로로 정렬
+              // items-center 추가: 가로축 중앙 정렬
+              <span className="block my-8 flex flex-col items-center justify-center">
                 <img 
                   src={src} 
                   alt={alt} 
-                    className="max-w-full h-auto max-h-[600px] object-contain transition-transform duration-500 group-hover:scale-105"
+                  className="rounded-xl shadow-lg border border-gray-100 max-w-full h-auto max-h-[700px] mx-auto hover:scale-[1.01] transition-transform duration-300" 
                   loading="lazy"
+                  onError={(e) => {
+                    e.currentTarget.style.display = 'none';
+                  }}
                 />
-                </div>
-                {alt && <figcaption className="text-center text-sm text-gray-500 mt-3 italic">{alt}</figcaption>}
-              </figure>
+                {alt && <span className="block text-center text-sm text-gray-400 mt-2 w-full">{alt}</span>}
+              </span>
             );
           },
 
-          // 6. 리스트 (Task List 지원)
-          ul({ children, className }) {
-            const isTaskList = className?.includes('contains-task-list');
-            return <ul className={clsx("space-y-2 my-4 text-gray-700", isTaskList ? "list-none pl-2" : "list-disc pl-6 marker:text-gray-400")}>{children}</ul>;
+          // 6. 리스트 스타일
+          ul({ children }) {
+            return <ul className="list-disc pl-6 space-y-2 my-4 text-gray-700 marker:text-gray-400">{children}</ul>;
           },
-          ol({ children }) {
-            return <ol className="list-decimal pl-6 space-y-2 my-4 text-gray-700 marker:text-gray-500 font-medium">{children}</ol>;
-          },
-          li({ children, className, ...props }: any) {
-            if (className?.includes('task-list-item')) {
-              return <li className="flex items-start gap-2 -ml-6" {...props}>{children}</li>
-            }
-            return <li className="pl-1 leading-relaxed" {...props}>{children}</li>;
-          },
-          // [수정] 체크박스 ReadOnly 속성 추가
-          input({ type, ...props }: any) {
-            if (type === 'checkbox') {
+          ol({ children, ...props }: any) {
             return (
-                <input 
-                  type="checkbox" 
-                  readOnly // [수정] 뷰어 모드이므로 readOnly 추가
-                  className="mt-1.5 w-4 h-4 text-blue-600 bg-gray-100 border-gray-300 rounded focus:ring-blue-500 focus:ring-2 cursor-default" 
+              <ol 
+                className="list-decimal pl-6 space-y-2 my-4 text-gray-700 marker:text-gray-500 font-medium" 
                 {...props}
-                />
-              )
-            }
-            return <input type={type} {...props} />;
+              >
+                {children}
+              </ol>
+            );
+          },
+          li({ children }) {
+            return <li className="pl-1">{children}</li>;
           },
 
-          // 7. 헤딩
-          h1({ children, id }: any) {
-            return (
-              <div className="group flex items-center gap-2 mt-12 mb-6 border-b border-gray-200 pb-4">
-                <h1 id={id} className="text-3xl font-extrabold text-gray-900 scroll-mt-24">{children}</h1>
-              </div>
-            );
+          // 7. 헤딩 스타일 (🛠️ 수정: ...props를 전달해야 id가 붙어서 목차 이동이 작동함)
+          h1({ children, ...props }: any) {
+            return <h1 className="text-3xl font-extrabold mt-12 mb-6 pb-4 border-b border-gray-100 text-gray-900" {...props}>{children}</h1>;
           },
-          h2({ children, id }: any) {
-            return (
-              <div className="group flex items-center gap-2 mt-10 mb-5 pb-2 border-b border-gray-100">
-                <h2 id={id} className="text-2xl font-bold text-gray-800 scroll-mt-24">{children}</h2>
-              </div>
-            );
+          h2({ children, ...props }: any) {
+            return <h2 className="text-2xl font-bold mt-10 mb-5 pb-2 text-gray-800" {...props}>{children}</h2>;
           },
-          h3({ children, id }: any) {
-            return <h3 id={id} className="text-xl font-bold mt-8 mb-4 text-gray-800 flex items-center gap-2 before:content-[''] before:w-1.5 before:h-6 before:bg-blue-500 before:rounded-full before:mr-1 scroll-mt-24 group">{children}</h3>;
+          h3({ children, ...props }: any) {
+            return <h3 className="text-xl font-bold mt-8 mb-4 text-gray-800 flex items-center gap-2 before:content-[''] before:w-1.5 before:h-6 before:bg-blue-500 before:rounded-full before:mr-1" {...props}>{children}</h3>;
           },
-          p({ children }) {
-            return <p className="mb-4 leading-7 text-gray-700 overflow-x-auto">{children}</p>;
-          }
         }}
       >
         {content}
@@ -281,53 +155,48 @@ function CodeBlock({ language, code }: { language: string; code: string }) {
   };
 
   return (
-    <div className="relative my-8 rounded-xl overflow-hidden border border-gray-700/50 shadow-2xl bg-[#1e1e1e] group">
-      <div className="flex items-center justify-between px-4 py-3 bg-[#252526] border-b border-black/30 select-none">
+    <div className="relative my-8 group rounded-xl overflow-hidden border border-gray-700/50 shadow-2xl bg-[#1e1e1e]">
+      <div className="flex items-center justify-between px-4 py-2.5 bg-[#2d2d2d] border-b border-gray-700 select-none">
         <div className="flex items-center gap-2">
-          <div className="flex gap-1.5 opacity-80 group-hover:opacity-100 transition-opacity">
-            <div className="w-2.5 h-2.5 rounded-full bg-[#FF5F56] border border-[#E0443E]/50" />
-            <div className="w-2.5 h-2.5 rounded-full bg-[#FFBD2E] border border-[#DEA123]/50" />
-            <div className="w-2.5 h-2.5 rounded-full bg-[#27C93F] border border-[#1AAB29]/50" />
+          <div className="flex gap-1.5">
+            <div className="w-3 h-3 rounded-full bg-[#FF5F56] border border-[#E0443E]" />
+            <div className="w-3 h-3 rounded-full bg-[#FFBD2E] border border-[#DEA123]" />
+            <div className="w-3 h-3 rounded-full bg-[#27C93F] border border-[#1AAB29]" />
           </div>
-          <div className="ml-4 flex items-center gap-1.5 text-[11px] font-sans font-medium text-gray-400">
-            <Terminal size={12} className="text-blue-400" />
+          {language && (
+            <div className="ml-4 flex items-center gap-1.5 px-2 py-0.5 rounded text-[10px] font-mono font-medium text-gray-400 bg-gray-700/50 border border-gray-600/50">
+              <Terminal size={10} />
               <span className="uppercase tracking-wider">{language}</span>
             </div>
+          )}
         </div>
         
         <button
           onClick={handleCopy}
           className={clsx(
-            "flex items-center gap-1.5 px-2 py-1 rounded-md text-[10px] font-medium transition-all duration-200 border bg-white/5 backdrop-blur-sm",
+            "flex items-center gap-1.5 px-2 py-1 rounded-md text-[11px] font-medium transition-all duration-200 border",
             isCopied 
               ? "bg-green-500/10 text-green-400 border-green-500/20" 
-              : "border-white/10 text-gray-400 hover:bg-white/10 hover:text-white"
+              : "bg-gray-700/50 text-gray-400 border-transparent hover:bg-gray-600 hover:text-white"
           )}
+          title="코드 복사"
         >
           {isCopied ? <Check size={12} /> : <Copy size={12} />}
-          <span>{isCopied ? 'Copied' : 'Copy'}</span>
+          <span>{isCopied ? 'Copied!' : 'Copy'}</span>
         </button>
       </div>
       
-      <div className="relative font-mono text-[14px] leading-relaxed overflow-x-auto">
+      <div className="relative font-mono text-[14px] leading-relaxed">
         <SyntaxHighlighter
           style={vscDarkPlus}
           language={language}
           PreTag="div"
           showLineNumbers={true}
-          wrapLines={true}
-          lineNumberStyle={{
-            minWidth: '2.5em',
-            paddingRight: '1em',
-            color: '#858585',
-            textAlign: 'right',
-            userSelect: 'none'
-          }}
+          lineNumberStyle={{ minWidth: '2.5em', paddingRight: '1em', color: '#6e7681', textAlign: 'right' }}
           customStyle={{
             margin: 0,
             padding: '1.5rem',
             background: 'transparent',
-            fontSize: '0.9rem',
           }}
         >
           {code}