diff --git a/admin/script.js b/admin/script.js
index d6576ba..f2ecb83 100644
--- a/admin/script.js
+++ b/admin/script.js
@@ -975,28 +975,44 @@ class FileManager {
         const tbody = document.getElementById('fileList');
         const sortBy = document.getElementById('sortBy').value;
         
-        let sortedFiles = [...this.files];
+        // 검색 및 필터 적용 (메인 페이지와 동일하게)
+        const searchTerm = document.getElementById('searchInput') ? document.getElementById('searchInput').value.toLowerCase().trim() : '';
+        const categoryFilter = document.getElementById('categoryFilter') ? document.getElementById('categoryFilter').value : '';
         
-        switch (sortBy) {
-            case 'title':
-                sortedFiles.sort((a, b) => a.title.localeCompare(b.title));
-                break;
-            case 'category':
-                sortedFiles.sort((a, b) => a.category.localeCompare(b.category));
-                break;
-            case 'date':
-            default:
-                sortedFiles.sort((a, b) => new Date(b.created_at || b.createdAt) - new Date(a.created_at || a.createdAt));
-                break;
+        let filteredFiles = [...this.files];
+        
+        if (searchTerm) {
+            filteredFiles = filteredFiles.filter(file => 
+                file.title.toLowerCase().includes(searchTerm) ||
+                file.description.toLowerCase().includes(searchTerm) ||
+                (file.tags && file.tags.some(tag => tag.toLowerCase().includes(searchTerm)))
+            );
         }
+        
+        if (categoryFilter) {
+            filteredFiles = filteredFiles.filter(file => file.category === categoryFilter);
+        }
+        
+        // 정렬
+        const sortedFiles = filteredFiles.sort((a, b) => {
+            switch (sortBy) {
+                case 'title':
+                    return a.title.localeCompare(b.title);
+                case 'category':
+                    return a.category.localeCompare(b.category);
+                case 'date':
+                default:
+                    return new Date(b.created_at || b.createdAt) - new Date(a.created_at || a.createdAt);
+            }
+        });
 
-        this.allFiles = sortedFiles; // 전체 파일 목록 저장
+        this.allFiles = sortedFiles;
         this.updatePagination();
         
         if (sortedFiles.length === 0) {
             tbody.innerHTML = `
                 <tr class="empty-state">
-                    <td colspan="6">📂 등록된 자료가 없습니다. 새 자료를 추가해보세요!</td>
+                    <td colspan="6">📂 조건에 맞는 자료가 없습니다.</td>
                 </tr>
             `;
             return;
@@ -1026,7 +1042,7 @@ class FileManager {
                 </td>
                 <td class="col-title">
                     <div class="board-title" onclick="fileManager.viewFile('${file.id}')">
-                        <strong>${this.escapeHtml(file.title)}</strong>
+                        ${this.escapeHtml(file.title)}
                         ${file.description ? `<br><small style="color: #6b7280; font-weight: normal;">${this.escapeHtml(file.description.substring(0, 80))}${file.description.length > 80 ? '...' : ''}</small>` : ''}
                         ${file.tags && file.tags.length > 0 ? 
                             `<br><div style="margin-top: 4px;">${file.tags.map(tag => `<span style="display: inline-block; background: #e5e7eb; color: #374151; padding: 2px 6px; border-radius: 10px; font-size: 0.7rem; margin-right: 4px;">#${this.escapeHtml(tag)}</span>`).join('')}</div>` : ''
@@ -1035,9 +1051,15 @@ class FileManager {
                 </td>
                 <td class="col-attachment">
                     ${hasAttachments ? 
-                        `<div class="attachment-icons" title="${file.files.length}개 파일">${file.files.map((f, index) => 
-                            `<span class="attachment-icon-clickable" onclick="fileManager.downloadSingleFile('${file.id}', ${index})" title="${f.name || f.original_name || '파일'}">${this.getFileIcon(f.name || f.original_name || 'unknown')}</span>`
-                        ).join(' ')}</div>` : 
+                        `<div class="attachment-icons">${file.files.map((f, index) => 
+                            `<div class="attachment-file-item" onclick="fileManager.downloadSingleFile('${file.id}', ${index})" title="클릭하여 다운로드">
+                                <span class="attachment-file-icon">${this.getFileIcon(f.name || f.original_name || 'unknown')}</span>
+                                <div class="attachment-file-info">
+                                    <div class="attachment-file-name">${this.escapeHtml(f.name || f.original_name || '파일')}</div>
+                                    <div class="attachment-file-size">${this.formatFileSize(f.size || 0)}</div>
+                                </div>
+                            </div>`
+                        ).join('')}</div>` : 
                         `<span class="no-attachment">-</span>`
                     }
                 </td>
@@ -1104,23 +1126,23 @@ class FileManager {
 
     // 페이지네이션 관련 함수들
     updatePagination() {
+        const totalPages = Math.max(1, Math.ceil(this.allFiles.length / 10));
         const pagination = document.getElementById('pagination');
         const prevBtn = document.getElementById('prevPage');
         const nextBtn = document.getElementById('nextPage');
         const pageInfo = document.getElementById('pageInfo');
         
-        const totalFiles = this.allFiles.length;
-        const itemsPerPage = 10;
-        const totalPages = Math.ceil(totalFiles / itemsPerPage);
+        // 항상 페이지네이션을 표시
+        if (pagination) pagination.style.display = 'flex';
         
-        if (totalPages <= 1) {
-            pagination.style.display = 'none';
-        } else {
-            pagination.style.display = 'flex';
-            prevBtn.disabled = this.currentPage <= 1;
-            nextBtn.disabled = this.currentPage >= totalPages;
-            pageInfo.textContent = `${this.currentPage} / ${totalPages}`;
-        }
+        // 페이지 버튼 상태 업데이트
+        if (prevBtn) prevBtn.disabled = this.currentPage <= 1;
+        if (nextBtn) nextBtn.disabled = this.currentPage >= totalPages || this.allFiles.length === 0;
+        
+        // 페이지 정보 표시 (아이템이 없어도 1/1로 표시)
+        const displayTotalPages = this.allFiles.length === 0 ? 1 : totalPages;
+        const displayCurrentPage = this.allFiles.length === 0 ? 1 : this.currentPage;
+        if (pageInfo) pageInfo.textContent = `${displayCurrentPage} / ${displayTotalPages}`;
     }
 
     goToPrevPage() {
@@ -1145,22 +1167,141 @@ class FileManager {
     viewFile(id) {
         const file = this.files.find(f => f.id === id);
         if (!file) return;
+
+        this.showDetailView(file);
+    }
+
+    showDetailView(file) {
+        // 메인 컨테이너 숨기기
+        const container = document.querySelector('.container');
+        container.style.display = 'none';
         
-        // 간단한 알림으로 파일 정보 표시
-        let info = `📄 ${file.title}\n\n`;
-        info += `📁 카테고리: ${file.category}\n`;
-        info += `📅 등록일: ${new Date(file.created_at || file.createdAt).toLocaleDateString('ko-KR')}\n`;
-        if (file.description) info += `📝 설명: ${file.description}\n`;
-        if (file.tags && file.tags.length > 0) info += `🏷️ 태그: ${file.tags.join(', ')}\n`;
-        if (file.files && file.files.length > 0) {
-            info += `\n📎 첨부파일 (${file.files.length}개):\n`;
-            file.files.forEach((attachment, index) => {
-                const icon = this.getFileIcon(attachment.name || attachment.original_name || 'unknown');
-                info += `  ${index + 1}. ${icon} ${attachment.name || attachment.original_name || '파일'}\n`;
-            });
+        // 상세보기 컨테이너 생성
+        const detailContainer = document.createElement('div');
+        detailContainer.className = 'detail-container';
+        detailContainer.id = 'detailContainer';
+        
+        const createdDate = new Date(file.created_at || file.createdAt).toLocaleDateString('ko-KR');
+        const updatedDate = new Date(file.updated_at || file.updatedAt).toLocaleDateString('ko-KR');
+        
+        detailContainer.innerHTML = `
+            <div class="container">
+                <header>
+                    <h1>📋 자료 상세보기</h1>
+                    <p>등록된 자료의 상세 정보를 확인하고 관리하세요</p>
+                </header>
+
+                <div class="detail-section">
+                    <div class="detail-header">
+                        <h2>📄 ${this.escapeHtml(file.title)}</h2>
+                        <div class="detail-actions">
+                            <button class="edit-detail-btn" onclick="fileManager.editFileFromDetail('${file.id}')" title="수정">
+                                ✏️ 수정
+                            </button>
+                            <button class="delete-detail-btn" onclick="fileManager.deleteFileFromDetail('${file.id}')" title="삭제">
+                                🗑️ 삭제
+                            </button>
+                            <button class="back-btn" onclick="fileManager.hideDetailView()">
+                                ← 목록으로 돌아가기
+                            </button>
+                        </div>
+                    </div>
+                    
+                    <div class="detail-content">
+                        <div class="detail-info">
+                            <div class="info-group">
+                                <label>📂 카테고리</label>
+                                <div class="info-value">
+                                    <span class="category-badge category-${file.category}">${file.category}</span>
+                                </div>
+                            </div>
+                            
+                            <div class="info-group">
+                                <label>📝 설명</label>
+                                <div class="info-value description">
+                                    ${file.description ? this.escapeHtml(file.description) : '설명이 없습니다.'}
+                                </div>
+                            </div>
+                            
+                            ${file.tags && file.tags.length > 0 ? `
+                            <div class="info-group">
+                                <label>🏷️ 태그</label>
+                                <div class="info-value">
+                                    <div class="tags-container">
+                                        ${file.tags.map(tag => `<span class="tag">#${this.escapeHtml(tag)}</span>`).join('')}
+                                    </div>
+                                </div>
+                            </div>` : ''}
+                            
+                            ${file.files && file.files.length > 0 ? `
+                            <div class="info-group">
+                                <label>📎 첨부파일 (${file.files.length}개)</label>
+                                <div class="info-value">
+                                    <div class="attachments-list">
+                                        ${file.files.map((f, index) => `
+                                            <div class="attachment-item">
+                                                <span class="attachment-icon">${this.getFileIcon(f.name || f.original_name || 'unknown')}</span>
+                                                <span class="attachment-name">${this.escapeHtml(f.name || f.original_name || '파일')}</span>
+                                                <button class="download-single-btn" onclick="fileManager.downloadSingleFile('${file.id}', ${index})" title="다운로드">
+                                                    📥 다운로드
+                                                </button>
+                                            </div>
+                                        `).join('')}
+                                    </div>
+                                    <div class="attachment-actions">
+                                        <button class="download-all-btn" onclick="fileManager.downloadFiles('${file.id}')" title="모든 파일 다운로드">
+                                            📦 모든 파일 다운로드
+                                        </button>
+                                    </div>
+                                </div>
+                            </div>` : `
+                            <div class="info-group">
+                                <label>📎 첨부파일</label>
+                                <div class="info-value no-files">
+                                    첨부된 파일이 없습니다.
+                                </div>
+                            </div>`}
+                            
+                            <div class="info-group">
+                                <label>📅 등록일</label>
+                                <div class="info-value">${createdDate}</div>
+                            </div>
+                            
+                            ${createdDate !== updatedDate ? `
+                            <div class="info-group">
+                                <label>🔄 수정일</label>
+                                <div class="info-value">${updatedDate}</div>
+                            </div>` : ''}
+                        </div>
+                    </div>
+                </div>
+            </div>
+        `;
+        
+        document.body.appendChild(detailContainer);
+    }
+
+    hideDetailView() {
+        const detailContainer = document.getElementById('detailContainer');
+        if (detailContainer) {
+            detailContainer.remove();
         }
         
-        alert(info);
+        // 메인 컨테이너 다시 보이기
+        const container = document.querySelector('.container');
+        container.style.display = 'block';
+    }
+
+    editFileFromDetail(id) {
+        this.hideDetailView();
+        this.editFile(id);
+    }
+
+    async deleteFileFromDetail(id) {
+        if (confirm('정말로 이 자료를 삭제하시겠습니까?')) {
+            await this.deleteFile(id);
+            this.hideDetailView();
+        }
     }
 
     editFile(id) {
@@ -1331,49 +1472,11 @@ class FileManager {
         const searchTerm = document.getElementById('searchInput').value.toLowerCase().trim();
         const categoryFilter = document.getElementById('categoryFilter').value;
         
-        let filteredFiles = this.files;
-        
-        if (searchTerm) {
-            filteredFiles = filteredFiles.filter(file => 
-                file.title.toLowerCase().includes(searchTerm) ||
-                file.description.toLowerCase().includes(searchTerm) ||
-                file.tags.some(tag => tag.toLowerCase().includes(searchTerm))
-            );
-        }
-        
-        if (categoryFilter) {
-            filteredFiles = filteredFiles.filter(file => file.category === categoryFilter);
-        }
-        
-        this.renderFilteredFiles(filteredFiles);
+        // 검색 시 첫 페이지로 리셋
+        this.currentPage = 1;
+        this.renderFiles();
     }
 
-    renderFilteredFiles(files) {
-        const container = document.getElementById('fileList');
-        const sortBy = document.getElementById('sortBy').value;
-        
-        let sortedFiles = [...files];
-        
-        switch (sortBy) {
-            case 'title':
-                sortedFiles.sort((a, b) => a.title.localeCompare(b.title));
-                break;
-            case 'category':
-                sortedFiles.sort((a, b) => a.category.localeCompare(b.category));
-                break;
-            case 'date':
-            default:
-                sortedFiles.sort((a, b) => new Date(b.created_at) - new Date(a.created_at));
-                break;
-        }
-
-        if (sortedFiles.length === 0) {
-            container.innerHTML = '<div class="empty-state"><p>🔍 검색 결과가 없습니다. 다른 키워드로 검색해보세요!</p></div>';
-            return;
-        }
-
-        container.innerHTML = sortedFiles.map(file => this.createFileHTML(file)).join('');
-    }
 
     clearForm() {
         document.getElementById('fileForm').reset();
diff --git a/admin/styles.css b/admin/styles.css
index 1e87c07..724e5a4 100644
--- a/admin/styles.css
+++ b/admin/styles.css
@@ -385,7 +385,7 @@ header p {
 }
 
 .board-table th {
-    padding: 15px 12px;
+    padding: 12px;
     text-align: center;
     font-weight: 600;
     font-size: 0.95rem;
@@ -410,17 +410,18 @@ header p {
 }
 
 .board-table td {
-    padding: 12px;
+    padding: 8px 12px;
     text-align: center;
     vertical-align: middle;
     font-size: 0.9rem;
+    line-height: 1.4;
 }
 
 /* 컬럼 너비 설정 */
 .col-no { width: 60px; }
 .col-category { width: 100px; }
 .col-title { width: auto; min-width: 200px; text-align: left; }
-.col-attachment { width: 80px; }
+.col-attachment { width: 220px; text-align: center; }
 .col-date { width: 120px; }
 .col-actions { width: 150px; }
 
@@ -431,7 +432,7 @@ header p {
     text-decoration: none;
     cursor: pointer;
     display: block;
-    padding: 8px;
+    padding: 4px 6px;
     border-radius: 4px;
     transition: all 0.2s ease;
 }
@@ -465,16 +466,61 @@ header p {
 
 .attachment-icons {
     display: flex;
-    gap: 2px;
-    justify-content: center;
+    flex-direction: column;
+    gap: 4px;
     align-items: center;
-    flex-wrap: wrap;
-    font-size: 1rem;
+    font-size: 0.85rem;
     line-height: 1.2;
+    max-height: 100px;
+    overflow-y: auto;
+    padding: 2px;
 }
 
-.attachment-icons span {
-    display: inline-block;
+.attachment-file-item {
+    display: inline-flex;
+    align-items: center;
+    gap: 2px;
+    cursor: pointer;
+    padding: 3px 4px;
+    border-radius: 3px;
+    transition: background-color 0.2s ease;
+    justify-content: center;
+    white-space: nowrap;
+}
+
+.attachment-file-item:hover {
+    background-color: #f0f9ff;
+}
+
+.attachment-file-icon {
+    font-size: 1.1rem;
+    width: auto;
+    text-align: left;
+    flex-shrink: 0;
+    margin-right: 1px;
+}
+
+.attachment-file-info {
+    display: flex;
+    flex-direction: column;
+    gap: 1px;
+    flex: 1;
+    min-width: 0;
+    margin-left: 0;
+}
+
+.attachment-file-name {
+    font-weight: 500;
+    color: #374151;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    font-size: 0.8rem;
+}
+
+.attachment-file-size {
+    color: #6b7280;
+    font-size: 0.7rem;
 }
 
 .attachment-icon-clickable {
@@ -496,15 +542,15 @@ header p {
 /* 액션 버튼 */
 .action-buttons {
     display: flex;
-    gap: 5px;
+    gap: 3px;
     justify-content: center;
     align-items: center;
 }
 
 .action-btn {
-    padding: 6px 12px;
+    padding: 4px 8px;
     border: none;
-    border-radius: 4px;
+    border-radius: 3px;
     font-size: 0.8rem;
     cursor: pointer;
     transition: all 0.2s ease;
@@ -549,6 +595,298 @@ header p {
     font-size: 1.1rem;
 }
 
+/* 상세보기 페이지 스타일 */
+.detail-container {
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+    z-index: 1000;
+    overflow-y: auto;
+}
+
+.detail-section {
+    background: rgba(255, 255, 255, 0.95);
+    padding: 30px;
+    border-radius: 15px;
+    margin-bottom: 30px;
+    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
+    backdrop-filter: blur(10px);
+}
+
+.detail-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-bottom: 30px;
+    flex-wrap: wrap;
+    gap: 15px;
+}
+
+.detail-header h2 {
+    color: #4a5568;
+    font-size: 2rem;
+    margin: 0;
+    flex: 1;
+}
+
+.detail-actions {
+    display: flex;
+    gap: 10px;
+    align-items: center;
+    flex-wrap: wrap;
+}
+
+.edit-detail-btn {
+    padding: 10px 20px;
+    background: #3b82f6;
+    color: white;
+    border: none;
+    border-radius: 8px;
+    cursor: pointer;
+    font-size: 0.95rem;
+    font-weight: 500;
+    transition: all 0.3s ease;
+    display: inline-flex;
+    align-items: center;
+    gap: 8px;
+}
+
+.edit-detail-btn:hover {
+    background: #2563eb;
+    transform: translateY(-2px);
+    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
+}
+
+.delete-detail-btn {
+    padding: 10px 20px;
+    background: #ef4444;
+    color: white;
+    border: none;
+    border-radius: 8px;
+    cursor: pointer;
+    font-size: 0.95rem;
+    font-weight: 500;
+    transition: all 0.3s ease;
+    display: inline-flex;
+    align-items: center;
+    gap: 8px;
+}
+
+.delete-detail-btn:hover {
+    background: #dc2626;
+    transform: translateY(-2px);
+    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
+}
+
+.back-btn {
+    padding: 12px 24px;
+    background: #667eea;
+    color: white;
+    border: none;
+    border-radius: 8px;
+    cursor: pointer;
+    font-size: 1rem;
+    font-weight: 500;
+    transition: all 0.3s ease;
+    text-decoration: none;
+    display: inline-flex;
+    align-items: center;
+    gap: 8px;
+}
+
+.back-btn:hover {
+    background: #5a67d8;
+    transform: translateY(-2px);
+    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
+}
+
+.detail-content {
+    display: grid;
+    gap: 20px;
+}
+
+.detail-info {
+    display: grid;
+    gap: 25px;
+}
+
+.info-group {
+    display: grid;
+    gap: 10px;
+}
+
+.info-group label {
+    font-weight: 600;
+    color: #4a5568;
+    font-size: 1.1rem;
+    display: flex;
+    align-items: center;
+    gap: 8px;
+}
+
+.info-value {
+    padding: 15px;
+    background: #f8fafc;
+    border-radius: 8px;
+    border: 2px solid #e2e8f0;
+    font-size: 1rem;
+    line-height: 1.6;
+}
+
+.info-value.description {
+    min-height: 80px;
+    white-space: pre-wrap;
+}
+
+.info-value.no-files {
+    color: #9ca3af;
+    font-style: italic;
+}
+
+.tags-container {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 8px;
+}
+
+.tag {
+    background: linear-gradient(135deg, #667eea, #764ba2);
+    color: white;
+    padding: 6px 12px;
+    border-radius: 20px;
+    font-size: 0.9rem;
+    font-weight: 500;
+    border: none;
+}
+
+.attachments-list {
+    display: grid;
+    gap: 12px;
+    margin-bottom: 20px;
+}
+
+.attachment-item {
+    display: flex;
+    align-items: center;
+    gap: 15px;
+    padding: 15px;
+    background: white;
+    border-radius: 8px;
+    border: 1px solid #e5e7eb;
+    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
+    transition: all 0.2s ease;
+}
+
+.attachment-item:hover {
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
+    transform: translateY(-1px);
+}
+
+.attachment-icon {
+    font-size: 1.5rem;
+    min-width: 30px;
+    text-align: center;
+}
+
+.attachment-name {
+    flex: 1;
+    font-weight: 500;
+    color: #374151;
+    word-break: break-all;
+}
+
+.download-single-btn {
+    background: #10b981;
+    color: white;
+    border: none;
+    padding: 8px 16px;
+    border-radius: 6px;
+    cursor: pointer;
+    font-size: 0.9rem;
+    font-weight: 500;
+    transition: all 0.2s ease;
+}
+
+.download-single-btn:hover {
+    background: #059669;
+    transform: scale(1.05);
+}
+
+.attachment-actions {
+    padding-top: 15px;
+    border-top: 1px solid #e5e7eb;
+    text-align: center;
+}
+
+.download-all-btn {
+    background: linear-gradient(135deg, #667eea, #764ba2);
+    color: white;
+    border: none;
+    padding: 12px 24px;
+    border-radius: 8px;
+    cursor: pointer;
+    font-size: 1rem;
+    font-weight: 600;
+    transition: all 0.3s ease;
+    display: inline-flex;
+    align-items: center;
+    gap: 8px;
+}
+
+.download-all-btn:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
+}
+
+/* 모바일 반응형 */
+@media (max-width: 768px) {
+    .detail-section {
+        padding: 20px;
+        margin: 10px;
+        border-radius: 10px;
+    }
+    
+    .detail-header {
+        flex-direction: column;
+        align-items: flex-start;
+    }
+    
+    .detail-header h2 {
+        font-size: 1.5rem;
+    }
+    
+    .detail-actions {
+        width: 100%;
+        justify-content: stretch;
+    }
+    
+    .detail-actions button {
+        flex: 1;
+        min-width: 0;
+    }
+    
+    .back-btn {
+        order: 3;
+        width: 100%;
+        justify-content: center;
+        margin-top: 10px;
+    }
+    
+    .attachment-item {
+        flex-direction: column;
+        align-items: flex-start;
+        gap: 10px;
+    }
+    
+    .download-single-btn {
+        align-self: stretch;
+        text-align: center;
+    }
+}
+
 /* 파일 업로드 영역 */
 .file-upload-area {
     position: relative;
diff --git a/script.js b/script.js
index 0925f61..9ab1282 100644
--- a/script.js
+++ b/script.js
@@ -65,7 +65,7 @@ class FileManager {
         const fileList = document.getElementById('fileList');
         const sortBy = document.getElementById('sortBy').value;
         
-        // 정렬
+        // 정렬 (관리자 페이지와 동일하게)
         const sortedFiles = [...this.filteredFiles].sort((a, b) => {
             switch (sortBy) {
                 case 'title':
@@ -74,7 +74,7 @@ class FileManager {
                     return a.category.localeCompare(b.category);
                 case 'date':
                 default:
-                    return new Date(b.createdAt) - new Date(a.createdAt);
+                    return new Date(b.created_at || b.createdAt) - new Date(a.created_at || a.createdAt);
             }
         });
         
@@ -118,9 +118,15 @@ class FileManager {
                 </td>
                 <td class="col-attachment">
                     ${hasAttachments ? 
-                        `<div class="attachment-icons" title="${file.files.length}개 파일">${file.files.map((f, index) => 
-                            `<span class="attachment-icon-clickable" onclick="fileManager.downloadSingleFile('${file.id}', ${index})" title="${f.name || f.original_name || '파일'}">${this.getFileIcon(f.name || f.original_name || 'unknown')}</span>`
-                        ).join(' ')}</div>` : 
+                        `<div class="attachment-icons">${file.files.map((f, index) => 
+                            `<div class="attachment-file-item" onclick="fileManager.downloadSingleFile('${file.id}', ${index})" title="클릭하여 다운로드">
+                                <span class="attachment-file-icon">${this.getFileIcon(f.name || f.original_name || 'unknown')}</span>
+                                <div class="attachment-file-info">
+                                    <div class="attachment-file-name">${this.escapeHtml(f.name || f.original_name || '파일')}</div>
+                                    <div class="attachment-file-size">${this.formatFileSize(f.size || 0)}</div>
+                                </div>
+                            </div>`
+                        ).join('')}</div>` : 
                         `<span class="no-attachment">-</span>`
                     }
                 </td>
@@ -151,25 +157,132 @@ class FileManager {
         return iconMap[ext] || '📄';
     }
 
+    formatFileSize(bytes) {
+        if (bytes === 0) return '0 B';
+        const k = 1024;
+        const sizes = ['B', 'KB', 'MB', 'GB'];
+        const i = Math.floor(Math.log(bytes) / Math.log(k));
+        return parseFloat((bytes / Math.pow(k, i)).toFixed(1)) + ' ' + sizes[i];
+    }
+
     viewFileInfo(id) {
         const file = this.files.find(f => f.id === id);
         if (!file) return;
 
-        let info = `📋 자료 정보\n\n`;
-        info += `📌 제목: ${file.title}\n`;
-        info += `📂 카테고리: ${file.category}\n`;
-        info += `📅 등록일: ${new Date(file.created_at || file.createdAt).toLocaleDateString('ko-KR')}\n`;
-        if (file.description) info += `📝 설명: ${file.description}\n`;
-        if (file.tags && file.tags.length > 0) info += `🏷️ 태그: ${file.tags.join(', ')}\n`;
-        if (file.files && file.files.length > 0) {
-            info += `\n📎 첨부파일 (${file.files.length}개):\n`;
-            file.files.forEach((attachment, index) => {
-                const icon = this.getFileIcon(attachment.name || attachment.original_name || 'unknown');
-                info += `  ${index + 1}. ${icon} ${attachment.name || attachment.original_name || '파일'}\n`;
-            });
+        this.showDetailView(file);
+    }
+
+    showDetailView(file) {
+        // 메인 컨테이너 숨기기
+        const container = document.querySelector('.container');
+        container.style.display = 'none';
+        
+        // 상세보기 컨테이너 생성
+        const detailContainer = document.createElement('div');
+        detailContainer.className = 'detail-container';
+        detailContainer.id = 'detailContainer';
+        
+        const createdDate = new Date(file.created_at || file.createdAt).toLocaleDateString('ko-KR');
+        const updatedDate = new Date(file.updated_at || file.updatedAt).toLocaleDateString('ko-KR');
+        
+        detailContainer.innerHTML = `
+            <div class="container">
+                <header>
+                    <h1>📋 자료 상세보기</h1>
+                    <p>등록된 자료의 상세 정보를 확인하세요</p>
+                </header>
+
+                <div class="detail-section">
+                    <div class="detail-header">
+                        <h2>📄 ${this.escapeHtml(file.title)}</h2>
+                        <button class="back-btn" onclick="fileManager.hideDetailView()">
+                            ← 목록으로 돌아가기
+                        </button>
+                    </div>
+                    
+                    <div class="detail-content">
+                        <div class="detail-info">
+                            <div class="info-group">
+                                <label>📂 카테고리</label>
+                                <div class="info-value">
+                                    <span class="category-badge category-${file.category}">${file.category}</span>
+                                </div>
+                            </div>
+                            
+                            <div class="info-group">
+                                <label>📝 설명</label>
+                                <div class="info-value description">
+                                    ${file.description ? this.escapeHtml(file.description) : '설명이 없습니다.'}
+                                </div>
+                            </div>
+                            
+                            ${file.tags && file.tags.length > 0 ? `
+                            <div class="info-group">
+                                <label>🏷️ 태그</label>
+                                <div class="info-value">
+                                    <div class="tags-container">
+                                        ${file.tags.map(tag => `<span class="tag">#${this.escapeHtml(tag)}</span>`).join('')}
+                                    </div>
+                                </div>
+                            </div>` : ''}
+                            
+                            ${file.files && file.files.length > 0 ? `
+                            <div class="info-group">
+                                <label>📎 첨부파일 (${file.files.length}개)</label>
+                                <div class="info-value">
+                                    <div class="attachments-list">
+                                        ${file.files.map((f, index) => `
+                                            <div class="attachment-item">
+                                                <span class="attachment-icon">${this.getFileIcon(f.name || f.original_name || 'unknown')}</span>
+                                                <span class="attachment-name">${this.escapeHtml(f.name || f.original_name || '파일')}</span>
+                                                <button class="download-single-btn" onclick="fileManager.downloadSingleFile('${file.id}', ${index})" title="다운로드">
+                                                    📥 다운로드
+                                                </button>
+                                            </div>
+                                        `).join('')}
+                                    </div>
+                                    <div class="attachment-actions">
+                                        <button class="download-all-btn" onclick="fileManager.downloadFiles('${file.id}')" title="모든 파일 다운로드">
+                                            📦 모든 파일 다운로드
+                                        </button>
+                                    </div>
+                                </div>
+                            </div>` : `
+                            <div class="info-group">
+                                <label>📎 첨부파일</label>
+                                <div class="info-value no-files">
+                                    첨부된 파일이 없습니다.
+                                </div>
+                            </div>`}
+                            
+                            <div class="info-group">
+                                <label>📅 등록일</label>
+                                <div class="info-value">${createdDate}</div>
+                            </div>
+                            
+                            ${createdDate !== updatedDate ? `
+                            <div class="info-group">
+                                <label>🔄 수정일</label>
+                                <div class="info-value">${updatedDate}</div>
+                            </div>` : ''}
+                        </div>
+                    </div>
+                </div>
+            </div>
+        `;
+        
+        document.body.appendChild(detailContainer);
+    }
+
+    hideDetailView() {
+        const detailContainer = document.getElementById('detailContainer');
+        if (detailContainer) {
+            detailContainer.remove();
         }
         
-        alert(info);
+        // 메인 컨테이너 다시 보이기
+        const container = document.querySelector('.container');
+        container.style.display = 'block';
     }
 
     async downloadFiles(id) {
@@ -262,20 +375,23 @@ class FileManager {
     }
 
     updatePagination() {
-        const totalPages = Math.ceil(this.filteredFiles.length / this.itemsPerPage);
+        const totalPages = Math.max(1, Math.ceil(this.filteredFiles.length / this.itemsPerPage));
         const pagination = document.getElementById('pagination');
         const prevBtn = document.getElementById('prevPage');
         const nextBtn = document.getElementById('nextPage');
         const pageInfo = document.getElementById('pageInfo');
         
-        if (totalPages <= 1) {
-            pagination.style.display = 'none';
-        } else {
-            pagination.style.display = 'flex';
-            prevBtn.disabled = this.currentPage <= 1;
-            nextBtn.disabled = this.currentPage >= totalPages;
-            pageInfo.textContent = `${this.currentPage} / ${totalPages}`;
-        }
+        // 항상 페이지네이션을 표시
+        pagination.style.display = 'flex';
+        
+        // 페이지 버튼 상태 업데이트
+        prevBtn.disabled = this.currentPage <= 1;
+        nextBtn.disabled = this.currentPage >= totalPages || this.filteredFiles.length === 0;
+        
+        // 페이지 정보 표시 (아이템이 없어도 1/1로 표시)
+        const displayTotalPages = this.filteredFiles.length === 0 ? 1 : totalPages;
+        const displayCurrentPage = this.filteredFiles.length === 0 ? 1 : this.currentPage;
+        pageInfo.textContent = `${displayCurrentPage} / ${displayTotalPages}`;
     }
 
     goToPrevPage() {
@@ -299,7 +415,14 @@ class FileManager {
     loadFiles() {
         try {
             const stored = localStorage.getItem('fileManagerData');
-            return stored ? JSON.parse(stored) : [];
+            const files = stored ? JSON.parse(stored) : [];
+            
+            // 기존 localStorage 데이터의 호환성을 위해 컴럼명 변환
+            return files.map(file => ({
+                ...file,
+                created_at: file.created_at || file.createdAt || new Date().toISOString(),
+                updated_at: file.updated_at || file.updatedAt || new Date().toISOString()
+            }));
         } catch (error) {
             console.error('파일 로드 중 오류:', error);
             return [];
diff --git a/styles.css b/styles.css
index dd9690b..c10cf1e 100644
--- a/styles.css
+++ b/styles.css
@@ -40,45 +40,6 @@ header p {
 }
 
 /* 페이지네이션 스타일 */
-.pagination {
-    display: flex;
-    justify-content: center;
-    align-items: center;
-    gap: 20px;
-    margin-top: 30px;
-    padding: 20px;
-    background: rgba(255, 255, 255, 0.9);
-    border-radius: 10px;
-    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
-}
-
-.page-btn {
-    background: #4299e1;
-    color: white;
-    border: none;
-    padding: 10px 20px;
-    border-radius: 8px;
-    cursor: pointer;
-    font-size: 1rem;
-    transition: all 0.3s ease;
-}
-
-.page-btn:hover:not(:disabled) {
-    background: #3182ce;
-    transform: translateY(-2px);
-}
-
-.page-btn:disabled {
-    background: #a0aec0;
-    cursor: not-allowed;
-    transform: none;
-}
-
-#pageInfo {
-    font-weight: 600;
-    color: #4a5568;
-    font-size: 1.1rem;
-}
 
 .auth-section {
     margin-top: 20px;
@@ -426,7 +387,7 @@ header p {
 }
 
 .board-table th {
-    padding: 15px 12px;
+    padding: 12px;
     text-align: center;
     font-weight: 600;
     font-size: 0.95rem;
@@ -451,17 +412,18 @@ header p {
 }
 
 .board-table td {
-    padding: 12px;
+    padding: 8px 12px;
     text-align: center;
     vertical-align: middle;
     font-size: 0.9rem;
+    line-height: 1.4;
 }
 
 /* 컬럼 너비 설정 */
 .col-no { width: 60px; }
 .col-category { width: 100px; }
 .col-title { width: auto; min-width: 200px; text-align: left; }
-.col-attachment { width: 80px; }
+.col-attachment { width: 220px; text-align: center; }
 .col-date { width: 120px; }
 .col-actions { width: 150px; }
 
@@ -472,7 +434,7 @@ header p {
     text-decoration: none;
     cursor: pointer;
     display: block;
-    padding: 8px;
+    padding: 4px 6px;
     border-radius: 4px;
     transition: all 0.2s ease;
 }
@@ -506,16 +468,61 @@ header p {
 
 .attachment-icons {
     display: flex;
-    gap: 2px;
-    justify-content: center;
+    flex-direction: column;
+    gap: 4px;
     align-items: center;
-    flex-wrap: wrap;
-    font-size: 1rem;
+    font-size: 0.85rem;
     line-height: 1.2;
+    max-height: 100px;
+    overflow-y: auto;
+    padding: 2px;
 }
 
-.attachment-icons span {
-    display: inline-block;
+.attachment-file-item {
+    display: inline-flex;
+    align-items: center;
+    gap: 2px;
+    cursor: pointer;
+    padding: 3px 4px;
+    border-radius: 3px;
+    transition: background-color 0.2s ease;
+    justify-content: center;
+    white-space: nowrap;
+}
+
+.attachment-file-item:hover {
+    background-color: #f0f9ff;
+}
+
+.attachment-file-icon {
+    font-size: 1.1rem;
+    width: auto;
+    text-align: left;
+    flex-shrink: 0;
+    margin-right: 1px;
+}
+
+.attachment-file-info {
+    display: flex;
+    flex-direction: column;
+    gap: 1px;
+    flex: 1;
+    min-width: 0;
+    margin-left: 0;
+}
+
+.attachment-file-name {
+    font-weight: 500;
+    color: #374151;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    font-size: 0.8rem;
+}
+
+.attachment-file-size {
+    color: #6b7280;
+    font-size: 0.7rem;
 }
 
 .attachment-icon-clickable {
@@ -537,15 +544,15 @@ header p {
 /* 액션 버튼 */
 .action-buttons {
     display: flex;
-    gap: 5px;
+    gap: 3px;
     justify-content: center;
     align-items: center;
 }
 
 .action-btn {
-    padding: 6px 12px;
+    padding: 4px 8px;
     border: none;
-    border-radius: 4px;
+    border-radius: 3px;
     font-size: 0.8rem;
     cursor: pointer;
     transition: all 0.2s ease;
@@ -575,39 +582,288 @@ header p {
     display: flex;
     justify-content: center;
     align-items: center;
-    gap: 15px;
-    margin-top: 20px;
-    padding: 20px 0;
+    gap: 20px;
+    margin-top: 30px;
+    padding: 20px;
+    background: rgba(255, 255, 255, 0.9);
+    border-radius: 10px;
+    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
 }
 
 .page-btn {
-    padding: 8px 16px;
+    padding: 12px 20px;
     border: 2px solid #e2e8f0;
-    border-radius: 6px;
+    border-radius: 8px;
     background: white;
     color: #4a5568;
     cursor: pointer;
-    font-size: 0.9rem;
-    font-weight: 500;
-    transition: all 0.2s ease;
+    font-size: 1rem;
+    font-weight: 600;
+    transition: all 0.3s ease;
+    min-width: 80px;
 }
 
 .page-btn:hover:not(:disabled) {
     border-color: #667eea;
     color: #667eea;
     background: #f0f4ff;
+    transform: translateY(-2px);
+    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
 }
 
 .page-btn:disabled {
     opacity: 0.5;
     cursor: not-allowed;
     color: #9ca3af;
+    transform: none;
+    box-shadow: none;
 }
 
 #pageInfo {
+    font-weight: 700;
+    color: #4a5568;
+    font-size: 1.2rem;
+    background: linear-gradient(135deg, #667eea, #764ba2);
+    background-clip: text;
+    -webkit-background-clip: text;
+    -webkit-text-fill-color: transparent;
+    padding: 8px 16px;
+    border: 2px solid #667eea;
+    border-radius: 8px;
+    background-color: rgba(102, 126, 234, 0.1);
+    min-width: 80px;
+    text-align: center;
+}
+
+/* 상세보기 페이지 스타일 */
+.detail-container {
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+    z-index: 1000;
+    overflow-y: auto;
+}
+
+.detail-section {
+    background: rgba(255, 255, 255, 0.95);
+    padding: 30px;
+    border-radius: 15px;
+    margin-bottom: 30px;
+    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
+    backdrop-filter: blur(10px);
+}
+
+.detail-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-bottom: 30px;
+    flex-wrap: wrap;
+    gap: 15px;
+}
+
+.detail-header h2 {
+    color: #4a5568;
+    font-size: 2rem;
+    margin: 0;
+    flex: 1;
+}
+
+.back-btn {
+    padding: 12px 24px;
+    background: #667eea;
+    color: white;
+    border: none;
+    border-radius: 8px;
+    cursor: pointer;
+    font-size: 1rem;
+    font-weight: 500;
+    transition: all 0.3s ease;
+    text-decoration: none;
+    display: inline-flex;
+    align-items: center;
+    gap: 8px;
+}
+
+.back-btn:hover {
+    background: #5a67d8;
+    transform: translateY(-2px);
+    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
+}
+
+.detail-content {
+    display: grid;
+    gap: 20px;
+}
+
+.detail-info {
+    display: grid;
+    gap: 25px;
+}
+
+.info-group {
+    display: grid;
+    gap: 10px;
+}
+
+.info-group label {
     font-weight: 600;
     color: #4a5568;
+    font-size: 1.1rem;
+    display: flex;
+    align-items: center;
+    gap: 8px;
+}
+
+.info-value {
+    padding: 15px;
+    background: #f8fafc;
+    border-radius: 8px;
+    border: 2px solid #e2e8f0;
     font-size: 1rem;
+    line-height: 1.6;
+}
+
+.info-value.description {
+    min-height: 80px;
+    white-space: pre-wrap;
+}
+
+.info-value.no-files {
+    color: #9ca3af;
+    font-style: italic;
+}
+
+.tags-container {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 8px;
+}
+
+.tag {
+    background: linear-gradient(135deg, #667eea, #764ba2);
+    color: white;
+    padding: 6px 12px;
+    border-radius: 20px;
+    font-size: 0.9rem;
+    font-weight: 500;
+    border: none;
+}
+
+.attachments-list {
+    display: grid;
+    gap: 12px;
+    margin-bottom: 20px;
+}
+
+.attachment-item {
+    display: flex;
+    align-items: center;
+    gap: 15px;
+    padding: 15px;
+    background: white;
+    border-radius: 8px;
+    border: 1px solid #e5e7eb;
+    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
+    transition: all 0.2s ease;
+}
+
+.attachment-item:hover {
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
+    transform: translateY(-1px);
+}
+
+.attachment-icon {
+    font-size: 1.5rem;
+    min-width: 30px;
+    text-align: center;
+}
+
+.attachment-name {
+    flex: 1;
+    font-weight: 500;
+    color: #374151;
+    word-break: break-all;
+}
+
+.download-single-btn {
+    background: #10b981;
+    color: white;
+    border: none;
+    padding: 8px 16px;
+    border-radius: 6px;
+    cursor: pointer;
+    font-size: 0.9rem;
+    font-weight: 500;
+    transition: all 0.2s ease;
+}
+
+.download-single-btn:hover {
+    background: #059669;
+    transform: scale(1.05);
+}
+
+.attachment-actions {
+    padding-top: 15px;
+    border-top: 1px solid #e5e7eb;
+    text-align: center;
+}
+
+.download-all-btn {
+    background: linear-gradient(135deg, #667eea, #764ba2);
+    color: white;
+    border: none;
+    padding: 12px 24px;
+    border-radius: 8px;
+    cursor: pointer;
+    font-size: 1rem;
+    font-weight: 600;
+    transition: all 0.3s ease;
+    display: inline-flex;
+    align-items: center;
+    gap: 8px;
+}
+
+.download-all-btn:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
+}
+
+/* 모바일 반응형 */
+@media (max-width: 768px) {
+    .detail-section {
+        padding: 20px;
+        margin: 10px;
+        border-radius: 10px;
+    }
+    
+    .detail-header {
+        flex-direction: column;
+        align-items: flex-start;
+    }
+    
+    .detail-header h2 {
+        font-size: 1.5rem;
+    }
+    
+    .back-btn {
+        width: 100%;
+        justify-content: center;
+    }
+    
+    .attachment-item {
+        flex-direction: column;
+        align-items: flex-start;
+        gap: 10px;
+    }
+    
+    .download-single-btn {
+        align-self: stretch;
+        text-align: center;
+    }
 }
 
 .file-list {