/* ==========================================================================
   도서관 / 가이드 라이브러리 (Library / Docs) 전용 레이아웃 스타일
   ========================================================================== */

.doc-library-wrapper {
    display: flex;
    gap: 2rem;
    max-width: 1400px;
    margin: 1.25rem auto 4.5rem;
    padding: 0 1.25rem;
    align-items: flex-start;
    color: #1e293b;
}

/* ==========================================================================
   [좌측 LNB] 상단 밀착 고정 사이드바 (Sagging 방지)
   ========================================================================== */
.doc-sidebar {
    width: 280px;
    flex-shrink: 0;
    position: sticky;
    top: 1.25rem;
    max-height: calc(100vh - 2.5rem);
    overflow-y: auto;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 0.75rem;
    padding: 1.13rem 0.88rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.doc-sidebar::-webkit-scrollbar {
    width: 5px;
}
.doc-sidebar::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

/* LNB 검색 필터 */
.doc-sidebar-search {
    position: relative;
    margin-bottom: 1rem;
}
.doc-search-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
    font-size: 0.88rem;
}
.doc-search-input {
    width: 100%;
    padding: 0.56rem 0.75rem 0.56rem 2.13rem;
    font-size: 0.81rem;
    border: 1px solid #cbd5e1;
    border-radius: 0.5rem;
    background: #f8fafc;
    box-sizing: border-box;
    transition: all 0.2s ease;
}
.doc-search-input:focus {
    outline: none;
    border-color: #2563eb;
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* 카테고리 아코디언 그룹 */
.doc-cat-group {
    border-bottom: 1px solid #f1f5f9;
}
.doc-cat-group:last-child {
    border-bottom: none;
}
.doc-cat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0.5rem;
    cursor: pointer;
    border-radius: 0.38rem;
    user-select: none;
    transition: background 0.15s ease;
}
.doc-cat-header:hover {
    background: #f8fafc;
}
.doc-cat-title-wrap {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.84rem;
    font-weight: 700;
    color: #0f172a;
}
.doc-cat-badge {
    font-size: 0.69rem;
    background: #f1f5f9;
    color: #64748b;
    padding: 0.13rem 0.44rem;
    border-radius: 0.63rem;
    font-weight: 600;
}
.doc-cat-chevron {
    font-size: 0.75rem;
    color: #94a3b8;
    transition: transform 0.2s ease;
}
.doc-cat-group.open .doc-cat-chevron {
    transform: rotate(180deg);
}

/* 아코디언 내부 게시글 트리 목록 */
.doc-article-list {
    display: none;
    list-style: none;
    padding: 0 0 0.5rem 0.63rem;
    margin: 0;
}
.doc-cat-group.open .doc-article-list {
    display: block;
}
.doc-article-item {
    margin-bottom: 0.13rem;
}
.doc-article-link {
    display: flex;
    align-items: center;
    gap: 0.44rem;
    padding: 0.44rem 0.5rem;
    font-size: 0.81rem;
    color: #475569;
    text-decoration: none;
    border-radius: 0.38rem;
    line-height: 1.4;
    transition: all 0.15s ease;
}
.doc-article-link:hover {
    background: #f1f5f9;
    color: #0f172a;
}
.doc-article-link.active {
    background: #eff6ff;
    color: #1d4ed8;
    font-weight: 700;
}
.doc-item-icon {
    font-size: 0.75rem;
    color: #94a3b8;
    flex-shrink: 0;
}
.doc-article-link.active .doc-item-icon {
    color: #2563eb;
}

/* ==========================================================================
   [우측 메인] 가이드 본문 뷰어 영역
   ========================================================================== */
.doc-main-content {
    flex: 1;
    min-width: 0; /* 글자 말줄임표(ellipsis) 레이아웃 붕괴 방지 필수 */
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 0.75rem;
    padding: 2.25rem 2.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

/* 빵부스러기 네비게이션 */
.doc-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.81rem;
    color: #64748b;
    margin-bottom: 1rem;
}
.doc-breadcrumb a {
    color: #64748b;
    text-decoration: none;
}
.doc-breadcrumb a:hover {
    color: #2563eb;
}
.doc-breadcrumb-sep {
    color: #cbd5e1;
    font-size: 0.69rem;
}

/* 문서 헤더 */
.doc-content-header {
    border-bottom: 1px solid #f1f5f9;
    padding-bottom: 1.5rem;
    margin-bottom: 1.75rem;
}
.doc-badge-cat {
    display: inline-block;
    padding: 0.25rem 0.63rem;
    font-size: 0.75rem;
    font-weight: 700;
    color: #2563eb;
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: 0.38rem;
    margin-bottom: 0.75rem;
}
.doc-content-title {
    font-size: 1.63rem;
    font-weight: 800;
    color: #0f172a;
    line-height: 1.35;
    margin: 0 0 1rem 0;
    letter-spacing: -0.02em;
}
.doc-content-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    font-size: 0.81rem;
    color: #64748b;
}
.doc-content-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.38rem;
}

/* 본문 스타일링 */
.doc-article-body {
    font-size: 0.94rem;
    line-height: 1.85;
    color: #334155;
    word-break: break-word;
}
.doc-article-body h2 {
    font-size: 1.25rem;
    font-weight: 750;
    color: #0f172a;
    margin: 2rem 0 1rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #e2e8f0;
}
.doc-article-body h3 {
    font-size: 1.06rem;
    font-weight: 700;
    color: #0f172a;
    margin: 1.5rem 0 0.75rem 0;
}
.doc-article-body p {
    margin: 0 0 1rem 0;
}
.doc-article-body ul,
.doc-article-body ol {
    margin: 0 0 1.25rem 0;
    padding-left: 1.5rem;
}
.doc-article-body li {
    margin-bottom: 0.5rem;
}
.doc-article-body strong {
    color: #0f172a;
}

/* 본문 내 콜아웃 박스 */
.kol-guide-callout {
    background: #f8fafc;
    border-left: 4px solid #2563eb;
    padding: 1rem 1.25rem;
    border-radius: 0 0.5rem 0.5rem 0;
    margin: 1.25rem 0;
    font-size: 0.88rem;
    color: #334155;
}
.kol-guide-callout.info {
    background: #eff6ff;
    border-left-color: #2563eb;
}
.kol-guide-callout.tip {
    background: #f0fdf4;
    border-left-color: #16a34a;
}
.kol-guide-callout.alert {
    background: #fef2f2;
    border-left-color: #dc2626;
}

/* 피드백 만족도 평가 카드 */
.doc-feedback-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-top: 2.5rem;
    text-align: center;
}
.doc-feedback-title {
    font-size: 0.94rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 0.75rem;
}
.doc-feedback-btns {
    display: inline-flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: center;
}
.btn-doc-action {
    display: inline-flex;
    align-items: center;
    gap: 0.38rem;
    padding: 0.5rem 1rem;
    font-size: 0.81rem;
    font-weight: 600;
    border-radius: 0.38rem;
    border: 1px solid #cbd5e1;
    background: #ffffff;
    color: #475569;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.15s ease;
}
.btn-doc-action:hover {
    background: #f1f5f9;
    color: #0f172a;
}
.btn-doc-action.primary {
    background: #2563eb;
    border-color: #2563eb;
    color: #ffffff;
}
.btn-doc-action.primary:hover {
    background: #1d4ed8;
}

/* ==========================================================================
   [하단 네비게이션] 이전글 / 다음글 카드 (깨짐 방지 및 말줄임표 완비)
   ========================================================================== */
.doc-nav-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 2rem;
    margin-bottom: 2rem; /* 우측 하단 챗봇 버튼과 겹침 방지 */
}
.doc-nav-card {
    display: flex;
    flex-direction: column;
    padding: 1rem 1.13rem;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    text-decoration: none;
    min-width: 0; /* 내부 말줄임표 필수 */
    overflow: hidden;
    transition: all 0.2s ease;
}
.doc-nav-card:hover {
    border-color: #2563eb;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.08);
}
.doc-nav-card.next {
    text-align: right;
    align-items: flex-end;
}
.doc-nav-dir {
    font-size: 0.75rem;
    font-weight: 700;
    color: #64748b;
    margin-bottom: 0.38rem;
    display: inline-flex;
    align-items: center;
    gap: 0.38rem;
}
.doc-nav-card:hover .doc-nav-dir {
    color: #2563eb;
}
.doc-nav-title {
    font-size: 0.88rem;
    font-weight: 600;
    color: #0f172a;
    width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
}

/* ==========================================================================
   반응형 (모바일/태블릿)
   ========================================================================== */
@media (max-width: 960px) {
    .doc-library-wrapper {
        flex-direction: column;
        gap: 1.25rem;
        margin: 1rem auto 4rem;
        padding: 0 1rem;
    }
    .doc-sidebar {
        width: 100%;
        position: static;
        max-height: none;
    }
    .doc-main-content {
        padding: 1.5rem 1.25rem;
    }
    .doc-content-title {
        font-size: 1.38rem;
    }
    .doc-nav-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   퍼블리싱 표준 클래스 (.cursorrules 준수: Zero Inline Styles)
   ========================================================================== */
.doc-cat-icon { color: #2563eb; }
.doc-breadcrumb-current { color: #0f172a; font-weight: 600; }
.doc-header-edit-link { color: #2563eb; text-decoration: none; margin-left: auto; }
.doc-header-edit-link:hover { text-decoration: underline; color: #1d4ed8; }
.doc-empty-state { text-align: center; padding: 6.25rem 1.25rem; color: #94a3b8; }
.doc-empty-icon { font-size: 3rem; margin-bottom: 1rem; color: #cbd5e1; }
.doc-empty-text { font-size: 1rem; color: #475569; }