/* ==========================================================================
   도심복합개발 지식 포털 & 애드센스 최적화 스타일시트 (style.css)
   최대 가로 800px 가독성 레이아웃, 카드뉴스 엔진, Q&A 섹션, 애드센스 슬롯, 지식그래프
   ========================================================================== */

:root {
  /* 라이트 모드 (기본) */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F1F5F9;
  --bg-input: #FFFFFF;
  
  --text-primary: #0F172A;
  --text-secondary: #334155;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  
  --border-color: #E2E8F0;
  --border-subtle: #F1F5F9;
  
  --brand-primary: #2563EB;
  --brand-primary-hover: #1D4ED8;
  --brand-accent: #0EA5E9;
  --brand-gold: #F59E0B;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --max-content-width: 800px;
  --max-site-width: 1100px;
}

[data-theme="dark"] {
  --bg-primary: #0B0F19;
  --bg-secondary: #111827;
  --bg-card: #1E293B;
  --bg-card-hover: #26354A;
  --bg-input: #1E293B;
  
  --text-primary: #F8FAFC;
  --text-secondary: #CBD5E1;
  --text-muted: #94A3B8;
  --text-light: #64748B;
  
  --border-color: #334155;
  --border-subtle: #1E293B;
  
  --brand-primary: #3B82F6;
  --brand-primary-hover: #60A5FA;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

/* 기본 리셋 & 타이포그래피 */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans KR', sans-serif;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.7;
  word-break: keep-all;
  overflow-x: hidden;
  transition: background-color 0.25s ease, color 0.25s ease;
  -webkit-font-smoothing: antialiased;
}

/* 상단 읽기 진행률 바 */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, #3B82F6, #8B5CF6, #EC4899);
  z-index: 1000;
  transition: width 0.1s ease;
}

/* 헤더 & 글로벌 네비게이션 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

[data-theme="dark"] .site-header {
  background-color: rgba(11, 15, 25, 0.92);
}

.header-inner {
  max-width: var(--max-site-width);
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-badge {
  background: linear-gradient(135deg, #2563EB, #7C3AED);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  transition: color 0.15s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--brand-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.btn-header {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border-color);
  background-color: var(--bg-card);
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.btn-header:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--brand-primary);
}

.btn-header.primary {
  background: var(--brand-primary);
  color: #FFFFFF;
  border: none;
}

.btn-header.primary:hover {
  background: var(--brand-primary-hover);
}

/* 메인 컨테이너 (최대 800px 가독성) */
.main-wrapper {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 5rem 1.25rem;
  min-height: calc(100vh - 300px);
}

/* ==========================================================================
   구글 애드센스 반응형 광고 슬롯 스타일
   ========================================================================== */
.adsense-slot-container {
  margin: 2rem auto;
  padding: 1rem;
  background-color: var(--bg-secondary);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  text-align: center;
  max-width: 100%;
  overflow: hidden;
  position: relative;
}

.adsense-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.adsense-placeholder {
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 0.85rem;
}

/* ==========================================================================
   홈 히어로 & 큐레이션 섹션
   ========================================================================== */
.hero-section {
  text-align: center;
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.hero-tag {
  display: inline-block;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  background-color: rgba(37, 99, 235, 0.1);
  color: var(--brand-primary);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.hero-title {
  font-size: 2.1rem;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.8px;
  margin-bottom: 0.8rem;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 650px;
  margin: 0 auto 1.5rem auto;
}

/* 검색바 */
.search-container {
  position: relative;
  max-width: 580px;
  margin: 0 auto 1.5rem auto;
}

.search-input {
  width: 100%;
  padding: 0.9rem 1.2rem 0.9rem 2.8rem;
  font-size: 0.95rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background-color: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.search-input:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1rem;
}

/* 필터 바 */
.filter-tabs {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
  scrollbar-width: thin;
}

.filter-btn {
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-card);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-btn:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

.filter-btn.active {
  background-color: var(--brand-primary);
  color: #FFFFFF;
  border-color: var(--brand-primary);
}

/* 글 목록 피드 */
.articles-feed {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.article-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  display: block;
}

.article-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-primary);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.6rem;
}

.card-vol {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--brand-primary);
  letter-spacing: 0.5px;
}

.card-time {
  font-size: 0.75rem;
  color: var(--text-light);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 0.6rem;
  color: var(--text-primary);
}

.card-summary {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.card-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.card-tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.tag-badge {
  font-size: 0.72rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-secondary);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

.card-links-count {
  font-size: 0.75rem;
  color: var(--brand-accent);
  font-weight: 600;
}

/* ==========================================================================
   글 상세 뷰 (Reader View - 최대 800px 가독성 극대화)
   ========================================================================== */
.reader-container {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.reader-nav {
  margin-bottom: 1.5rem;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-md);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-back:hover {
  color: var(--brand-primary);
  border-color: var(--brand-primary);
}

.reader-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.reader-meta-top {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.8rem;
}

.reader-category-badge {
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  background-color: rgba(37, 99, 235, 0.1);
  color: var(--brand-primary);
}

.reader-vol {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--text-muted);
}

.reader-title {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.6px;
  margin-bottom: 1rem;
}

.reader-info-bar {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* 3초 핵심 요약 박스 */
.reader-summary-box {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(124, 58, 237, 0.05));
  border-left: 4px solid var(--brand-primary);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 2rem;
}

.summary-title {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--brand-primary);
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.summary-text {
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* ==========================================================================
   HTML 카드뉴스 비주얼 컴포넌트
   ========================================================================== */
.card-news-banner {
  background: linear-gradient(135deg, #1E3A8A, #3B82F6);
  color: #FFFFFF;
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.card-news-theme-part-1 { background: linear-gradient(135deg, #1E3A8A, #3B82F6); }
.card-news-theme-part-2 { background: linear-gradient(135deg, #4C1D95, #8B5CF6); }
.card-news-theme-part-3 { background: linear-gradient(135deg, #064E3B, #10B981); }
.card-news-theme-part-4 { background: linear-gradient(135deg, #78350F, #F59E0B); }
.card-news-theme-part-5 { background: linear-gradient(135deg, #7F1D1D, #EF4444); }
.card-news-theme-part-6 { background: linear-gradient(135deg, #164E63, #06B6D4); }
.card-news-theme-part-7 { background: linear-gradient(135deg, #831843, #EC4899); }
.card-news-theme-part-8 { background: linear-gradient(135deg, #312E81, #6366F1); }

.card-news-tagline {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 1rem;
}

.card-news-highlight {
  font-size: 1.45rem;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 1.5rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.card-news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.card-news-item {
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.item-icon {
  font-size: 1.4rem;
  margin-bottom: 0.4rem;
}

.item-title {
  font-size: 0.9rem;
  font-weight: 800;
  margin-bottom: 0.3rem;
  color: #FFFFFF;
}

.item-desc {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.45;
}

/* ==========================================================================
   본문 콘텐츠 스타일 (H2, H3, H4 정밀 서식)
   ========================================================================== */
.reader-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-secondary);
}

.reader-body h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 2.8rem 0 1.1rem 0;
  line-height: 1.4;
  letter-spacing: -0.4px;
  position: relative;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-subtle);
}

.reader-body h2::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--brand-primary);
}

.reader-body h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 2.2rem 0 0.9rem 0;
  line-height: 1.4;
  letter-spacing: -0.3px;
}

.reader-body h4 {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 1.8rem 0 0.7rem 0;
}

.reader-body p {
  margin-bottom: 1.35rem;
}

.reader-body ul, .reader-body ol {
  margin: 1rem 0 1.5rem 1.5rem;
}

.reader-body li {
  margin-bottom: 0.6rem;
  line-height: 1.7;
}

.reader-body blockquote {
  border-left: 3px solid var(--border-color);
  padding-left: 1.2rem;
  margin: 1.5rem 0;
  color: var(--text-muted);
  font-style: italic;
}

/* ==========================================================================
   글별 핵심 실무 Q&A 섹션 스타일
   ========================================================================== */
.reader-qna-section {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin: 3rem 0 2rem 0;
  box-shadow: var(--shadow-sm);
}

.qna-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.qna-tag {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--brand-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.3rem;
}

.qna-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.4px;
}

.qna-list {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.qna-item {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.qna-item:hover {
  border-color: var(--brand-primary);
  box-shadow: var(--shadow-sm);
}

.qna-q {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--brand-primary);
  line-height: 1.45;
  margin-bottom: 0.6rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.qna-a {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  padding-left: 0.5rem;
  border-left: 3px solid rgba(37, 99, 235, 0.2);
}

/* 꼬리에 꼬리를 무는 연계 섹션 */
.story-bridge-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin-top: 3.5rem;
  box-shadow: var(--shadow-sm);
}

.bridge-header {
  margin-bottom: 1.25rem;
}

.bridge-tag {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--brand-primary);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

.bridge-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.bridge-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.related-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.related-card:hover {
  transform: translateY(-2px);
  border-color: var(--brand-primary);
  background-color: var(--bg-card);
}

.rel-vol {
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--brand-primary);
  margin-bottom: 0.3rem;
}

.rel-title {
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.rel-summary {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* ==========================================================================
   애드센스 필수 정책 페이지 뷰 (About, Privacy, Terms, Contact)
   ========================================================================== */
.policy-container {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  animation: fadeIn 0.3s ease;
}

.policy-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.policy-title {
  font-size: 1.85rem;
  font-weight: 800;
  margin-bottom: 0.6rem;
  letter-spacing: -0.5px;
}

.policy-date {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.policy-content {
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.policy-content h2 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 2rem 0 0.8rem 0;
}

.policy-content p {
  margin-bottom: 1.2rem;
}

.policy-content ul {
  margin: 0.8rem 0 1.2rem 1.5rem;
}

.policy-content li {
  margin-bottom: 0.5rem;
}

.policy-callout {
  background-color: var(--bg-secondary);
  border-left: 4px solid var(--brand-primary);
  padding: 1.2rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.5rem 0;
  font-size: 0.92rem;
}

/* 문의하기 폼 */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  margin-top: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}

.form-input, .form-textarea {
  padding: 0.8rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-input);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.92rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--brand-primary);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.btn-submit {
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-md);
  background-color: var(--brand-primary);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease;
  align-self: flex-start;
}

.btn-submit:hover {
  background-color: var(--brand-primary-hover);
}

/* ==========================================================================
   지식 그래프 모달 및 HUD 컨트롤 스타일
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 960px;
  height: 85vh;
  max-height: 800px;
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1.75rem;
  position: relative;
  box-shadow: var(--shadow-lg);
  transform: scale(0.96);
  transition: transform 0.2s ease;
}

.modal-overlay.active .modal-content {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-muted);
}

.graph-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.8rem;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.graph-controls-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.graph-search-input {
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.82rem;
  outline: none;
  width: 180px;
  transition: border-color 0.2s ease;
}

.graph-search-input:focus {
  border-color: var(--brand-primary);
}

.graph-filter-tabs {
  display: flex;
  gap: 0.35rem;
  overflow-x: auto;
  padding-bottom: 0.4rem;
  margin-bottom: 0.6rem;
  scrollbar-width: thin;
}

.graph-filter-btn {
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.graph-filter-btn:hover, .graph-filter-btn.active {
  background-color: var(--brand-primary);
  color: #FFFFFF;
  border-color: var(--brand-primary);
}

.graph-canvas-container {
  flex: 1;
  position: relative;
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  min-height: 400px;
}

#graphCanvas {
  display: block;
  width: 100%;
  height: 100%;
}

.graph-tooltip {
  position: absolute;
  display: none;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 0.9rem;
  width: 280px;
  pointer-events: none;
  z-index: 100;
}

[data-theme="dark"] .graph-tooltip {
  background-color: rgba(15, 23, 42, 0.96);
  border-color: var(--border-color);
}

/* 푸터 */
.site-footer {
  background-color: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 3.5rem 1.5rem 2.5rem 1.5rem;
  color: var(--text-muted);
}

.footer-inner {
  max-width: var(--max-site-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-brand h4 {
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 0.6rem;
}

.footer-brand p {
  font-size: 0.85rem;
  line-height: 1.6;
  max-width: 400px;
}

.footer-col h5 {
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: color 0.15s ease;
}

.footer-links a:hover {
  color: var(--brand-primary);
}

.footer-bottom {
  max-width: var(--max-site-width);
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* 반응형 */
@media (max-width: 768px) {
  .header-nav { display: none; }
  .footer-inner { grid-template-columns: 1fr; gap: 1.8rem; }
  .hero-title { font-size: 1.65rem; }
  .reader-title { font-size: 1.5rem; }
  .card-news-grid { grid-template-columns: 1fr; }
  .policy-container { padding: 1.5rem; }
  .modal-content { height: 92vh; padding: 1rem; }
}

/* Mini Callout (Option A for subheadings) */
.mini-callout {
  margin: 1.5rem 0 2.5rem 0;
  padding: 1.25rem 1.5rem;
  background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
  border: 1px solid #a7f3d0;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.05);
  color: #064e3b;
  font-size: 0.95rem;
  line-height: 1.6;
  position: relative;
  overflow: hidden;
}
.mini-callout::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background-color: #10b981;
}
.mini-callout strong {
  color: #047857;
  font-weight: 700;
}