/* ============================================================
   GUACAMOLED - 친근한 디지털 인문학자 테마 (style.css)
   Target: Friendly Digital Humanist Design System
   Dual Theme: Warm Cream Paper (Light) & Deep Shadow Forest (Dark)
   Typography: Lora + Maru Buri (Serif) & Pretendard (Sans) & JetBrains Mono
============================================================ */

/* 1. Global Typography & Design Tokens */
:root {
  /* 
   * [Heading Font Stack]
   * 영문: 생동감과 위트가 있는 Bricolage Grotesque
   * 국문: 넉넉한 여백과 부드러운 굴림의 LINE Seed KR
   */
  --font-heading: "Bricolage Grotesque", "LINESeedKR", -apple-system, BlinkMacSystemFont, sans-serif;

  /* [Body Font Stack] 15:1+ 초고대비 및 난독증 친화 산세리프 */
  --font-body: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* [Mono/Code Stack] 엔지니어링 온톨로지 명세용 */
  --font-mono: "JetBrains Mono", Consolas, monospace;

  /* Backward Compatibility Aliases */
  --heading-font: var(--font-heading);
  --body-font: var(--font-body);
  --code-font: var(--font-mono);
  --font-serif: var(--font-heading);
  --font-sans: var(--font-body);
  --font-brand: var(--font-heading);

  /* Layout Constants */
  --max-width: 1080px;
  --border-radius-sm: 6px;
  --border-radius-md: 10px;
  --border-radius-lg: 14px;
  --transition-speed: 0.22s ease-in-out;
}

/* 2. Light Theme (기본 / [data-theme="light"]) */
:root,
[data-theme="light"] {
  /* Canvas & Surfaces (웜 크림 페이퍼) */
  --bg-primary: #FAF8F5;          /* 웜 크림 페이퍼 */
  --bg-surface: #FFFFFF;          /* 카드 배경 */
  --bg-surface-elevated: #F2EFE9; /* 카드 호버/구분선 */
  --bg-subtle: #F6F3EC;           /* 탭 바, 보조 배경 */
  --bg-header: rgba(250, 248, 245, 0.92); /* 헤더 반투명 블러 */
  
  /* Text & Contrast (초고대비 딥 에스프레소 올리브) */
  --text-primary: #1D2620;        /* 딥 에스프레소 올리브 */
  --text-secondary: #4A584F;      /* 보조 텍스트 */
  --text-muted: #75867B;          /* 캡션/메타 */
  --text-main: var(--text-primary);

  /* Brand Accents */
  --brand-primary: #2C6E49;       /* 아보카도 포레스트 */
  --brand-primary-hover: #1E5034;
  --brand-accent: #C86432;        /* 테라코타 앰버 */
  --brand-accent-hover: #A84E22;
  
  --border-color: #E2DDD5;
  --border-subtle: var(--border-color);
  --border-strong: #C9C2B7;

  /* Aliases for Components */
  --accent-color: var(--brand-primary);
  --accent-hover: var(--brand-primary-hover);
  --accent-bg: rgba(44, 110, 73, 0.08);
  --accent-mint: var(--brand-accent);
  --accent-mint-bg: rgba(200, 100, 50, 0.1);
  --nav-hover-bg: rgba(0, 0, 0, 0.04);

  /* Buttons */
  --btn-primary-bg: var(--brand-primary);
  --btn-primary-border: #23593B;
  --btn-primary-text: #ffffff;
  --btn-primary-hover-bg: var(--brand-primary-hover);

  /* Focus */
  --focus-ring: 2px solid var(--brand-primary);
  --focus-offset: 3px;
}

/* 3. Dark Theme ([data-theme="dark"]) */
[data-theme="dark"] {
  /* Canvas & Surfaces (딥 섀도 포레스트) */
  --bg-primary: #141815;          /* 딥 섀도 포레스트 */
  --bg-surface: #1B211C;          /* 짙은 올리브 슬레이트 */
  --bg-surface-elevated: #242C26; /* 호버, 팝오버 */
  --bg-subtle: #181E19;
  --bg-header: rgba(27, 33, 28, 0.88); /* 헤더 반투명 블러 */
  
  /* Text & Contrast (소프트 펄 화이트) */
  --text-primary: #F2F5F3;        /* 소프트 펄 화이트 */
  --text-secondary: #B4C2B8;      /* 부드러운 세이지 */
  --text-muted: #7D8F83;
  --text-main: var(--text-primary);

  /* Brand Accents */
  --brand-primary: #52B788;       /* 산뜻한 세이지 그린 */
  --brand-primary-hover: #6EC499;
  --brand-accent: #E59866;        /* 웜 코랄 앰버 */
  --brand-accent-hover: #F0B086;

  --border-color: #29342C;
  --border-subtle: var(--border-color);
  --border-strong: #3F5044;

  /* Aliases for Components */
  --accent-color: var(--brand-primary);
  --accent-hover: var(--brand-primary-hover);
  --accent-bg: rgba(82, 183, 136, 0.12);
  --accent-mint: var(--brand-accent);
  --accent-mint-bg: rgba(229, 152, 102, 0.14);
  --nav-hover-bg: rgba(255, 255, 255, 0.06);

  /* Buttons */
  --btn-primary-bg: #2B5A40;
  --btn-primary-border: #438B64;
  --btn-primary-text: #ffffff;
  --btn-primary-hover-bg: #377553;

  /* Focus */
  --focus-ring: 2px solid var(--brand-primary);
  --focus-offset: 3px;
}

/* 4. Base Reset & Typography Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.75;
  letter-spacing: -0.01em;
  word-break: keep-all; /* 한글 단어 끊김 방지 */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-speed), color var(--transition-speed);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

main > section {
  padding: 1.5rem 0 1rem 0;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -60px;
  left: 1rem;
  background: var(--brand-primary);
  color: #ffffff;
  padding: 0.5rem 1rem;
  font-weight: 700;
  border-radius: var(--border-radius-sm);
  z-index: 2000;
  transition: top var(--transition-speed);
  text-decoration: none;
}
.skip-link:focus {
  top: 1rem;
  outline: var(--focus-ring);
}

/* 5. Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  background-color: var(--bg-header);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
  transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.brand-logo {
  font-size: 1.4rem;
}

.brand-name {
  font-family: var(--heading-font);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-desktop .nav-list {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.nav-link, .nav-link:visited {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.35rem 0.5rem;
  border-radius: var(--border-radius-sm);
  transition: color var(--transition-speed), background-color var(--transition-speed);
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--text-primary);
  background-color: var(--nav-hover-bg);
}

.nav-link[aria-current="page"] {
  font-weight: 700;
  border-bottom: 2px solid var(--brand-primary);
  border-radius: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-theme,
.btn-hamburger {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 0.4rem 0.8rem;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  font-size: 0.88rem;
  font-family: var(--body-font);
  transition: background var(--transition-speed), border-color var(--transition-speed);
}

.btn-theme:hover,
.btn-hamburger:hover {
  background: var(--border-strong);
}

.btn-hamburger {
  display: none;
  width: 40px;
  height: 40px;
  padding: 8px;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
}
.btn-hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
}

/* Mobile Drawer */
.drawer-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  z-index: 1500;
  opacity: 0;
  transition: opacity var(--transition-speed);
}
.drawer-backdrop.active {
  display: block;
  opacity: 1;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: -320px;
  width: 280px;
  height: 100vh;
  background: var(--bg-surface);
  border-left: 1px solid var(--border-subtle);
  z-index: 1600;
  display: flex;
  flex-direction: column;
  padding: 2rem 1.5rem;
  transition: transform 0.3s ease-in-out;
}
.mobile-drawer.active {
  transform: translateX(-320px);
}
.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}
.drawer-close {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}
.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.mobile-nav-link {
  display: block;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius-sm);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  text-decoration: none;
  transition: all var(--transition-speed);
}
.mobile-nav-link:hover, .mobile-nav-link[aria-current="page"] {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

/* 6. Typography & Headings */
/* 헤딩 전반 (h1 ~ h3, 주요 타이틀) */
h1, h2, h3, h4,
.hero-title, 
.section-title, 
.card-title,
.wf-title,
.brand-name {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.02em; /* Bricolage 특유의 탄탄한 자간 응집력 */
  word-break: keep-all;
}

/* 🥑 로고 브랜드명 특화 스타일 */
.brand-name {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  display: inline-flex;
  align-items: center;
}

/* 메인 히어로 타이틀 */
.hero-title {
  font-size: clamp(1.9rem, 4.2vw, 2.6rem);
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 0.5rem;
  margin-bottom: 1.25rem;
}

/* 섹션 타이틀 */
.section-title {
  font-size: clamp(1.35rem, 2.8vw, 1.75rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* 카드 타이틀 */
h3.card-title {
  font-size: 1.18rem;
  line-height: 1.45;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

/* 코드, 뱃지, 태그는 고정폭 서체 적용 */
code, pre, .badge, .hero-tag, .card-meta {
  font-family: var(--font-mono);
}

/* Global Link Rules & Descender Clearance */
a, a:visited {
  color: var(--brand-primary);
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 4px;
  transition: color var(--transition-speed), text-decoration-color var(--transition-speed);
}
a:hover {
  color: var(--brand-primary-hover);
  text-decoration-color: var(--brand-primary-hover);
}

/* 7. Hero Banners & Mission Cards */
.hero-banner {
  padding-bottom: 1.5rem;
  border-bottom: none;
}

.hero-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--brand-primary);
  background-color: var(--accent-bg);
  padding: 0.25rem 0.65rem;
  border-radius: 20px;
  margin-bottom: 1rem;
  border: 1px solid var(--border-subtle);
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 800px;
  line-height: 1.75;
}

/* 8. Interactive Tabs System */
.tab-container {
  margin-top: 1.5rem;
}

.tab-nav {
  display: flex;
  gap: 0.75rem;
  border-bottom: 2px solid var(--border-subtle);
  margin-bottom: 2rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--body-font);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.65rem 1.25rem;
  cursor: pointer;
  border-radius: var(--border-radius-sm) var(--border-radius-sm) 0 0;
  position: relative;
  transition: all var(--transition-speed);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-primary);
  background-color: var(--bg-surface-elevated);
}

.tab-btn.active {
  color: var(--brand-primary);
  background-color: var(--bg-surface);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--brand-primary);
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
  animation: fadeIn 0.25s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 9. Interactive Search & Filter Bar */
.filter-container {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-md);
  padding: 1.25rem;
  margin: 1.5rem 0 2rem 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.search-input-wrap {
  position: relative;
  width: 100%;
}

.search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-sm);
  color: var(--text-primary);
  font-family: var(--body-font);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-speed);
}

.search-input:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 2px var(--accent-bg);
}

.search-icon {
  position: absolute;
  left: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1rem;
  pointer-events: none;
}

.tag-filter-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.filter-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-right: 0.5rem;
}

.tag-btn {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.35rem 0.75rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-speed);
}

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

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

/* 10. Interactive Accordion Component */
.accordion-group {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.accordion-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  transition: border-color var(--transition-speed);
}

.accordion-item:hover {
  border-color: var(--border-strong);
}

.accordion-header {
  width: 100%;
  padding: 1.2rem 1.5rem;
  background: transparent;
  border: none;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  text-align: left;
  font-family: var(--body-font);
  transition: background-color var(--transition-speed);
}

.accordion-header:hover {
  background-color: var(--bg-surface-elevated);
}

.accordion-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.accordion-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.accordion-icon {
  font-size: 1.2rem;
  color: var(--text-muted);
  transition: transform var(--transition-speed);
}

.accordion-item.open .accordion-icon {
  transform: rotate(180deg);
}

.accordion-body {
  display: none;
  padding: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-subtle);
}

.accordion-item.open .accordion-body {
  display: block;
  animation: fadeIn 0.25s ease-in-out;
}

/* 11. Cards & Grid System */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 1.5rem;
  margin-top: 1.25rem;
}

.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color var(--transition-speed), background-color var(--transition-speed);
}

.card:hover {
  background-color: var(--bg-surface-elevated);
  border-color: var(--border-strong);
}

.card-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.card-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Option B Preferred Layout: Side-by-Side Action Bar */
.card-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--btn-primary-bg);
  border: 1px solid var(--btn-primary-border);
  color: var(--btn-primary-text) !important;
  padding: 0.55rem 1.1rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none !important;
  transition: background-color var(--transition-speed), border-color var(--transition-speed);
}
.btn-primary:hover {
  background-color: var(--btn-primary-hover-bg);
  border-color: var(--brand-primary-hover);
}

.btn-link, .btn-link:visited {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--brand-accent);
  text-decoration: underline;
}
.btn-link:hover {
  color: var(--brand-accent-hover);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 4px;
  background-color: var(--accent-bg);
  color: var(--brand-primary);
  border: 1px solid var(--border-subtle);
}

.badge-mint {
  background-color: var(--accent-mint-bg);
  color: var(--brand-accent);
  border-color: rgba(200, 100, 50, 0.25);
}

/* 12. Footer */
.site-footer {
  margin-top: 5rem;
  border-top: 1px solid var(--border-subtle);
  padding: 2.5rem 0;
  background-color: var(--bg-surface);
  transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copyright {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.footer-link, .footer-link:visited {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color var(--transition-speed);
}

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

.back-to-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  text-decoration: none;
  padding: 0.5rem 0.8rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  z-index: 900;
  transition: all var(--transition-speed);
}
.back-to-top:hover {
  background-color: var(--brand-primary);
  color: #ffffff;
}

/* 13. Responsive */
@media (max-width: 860px) {
  .nav-desktop {
    display: none;
  }
  .btn-hamburger {
    display: flex;
  }
  .card-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   Archive Page Readability & Interactive Enhancements
============================================================ */

/* 1. 한글 조판 최적화 (사이트 전역 적용) */
body, p, .card, article, .eco-section, .wf-card, .hero-lead {
  word-break: keep-all;        /* 단어 단위 줄바꿈 */
  overflow-wrap: break-word;
  line-height: 1.8;
  letter-spacing: -0.012em;
}

/* 2. 본문 텍스트 가독 대비 상향 (WCAG AAA) */
.eco-section p {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* 3. 워크플로우 검색창 및 필터 칩 스타일 */
.wf-filter-toolbar {
  margin-bottom: 2rem;
  padding: 1.25rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-md);
}

.wf-search-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius-sm, 8px);
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.95rem;
  margin-bottom: 0.85rem;
  outline: none;
  font-family: var(--body-font);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.wf-search-input:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(44, 110, 73, 0.15);
}

.wf-filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-chip {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--body-font);
  transition: all 0.2s ease;
}

.filter-chip:hover,
.filter-chip.active {
  background: var(--brand-primary);
  color: #FFFFFF !important;
  border-color: var(--brand-primary);
  font-weight: 600;
}

/* 4. 점진적 공개(Details/Summary) 디자인 */
.wf-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-md);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  transition: border-color var(--transition-speed), background-color var(--transition-speed);
}

.wf-card:hover {
  border-color: var(--border-strong);
}

.wf-header {
  margin-bottom: 0.5rem;
}

.wf-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.wf-title {
  font-size: 1.2rem;
  line-height: 1.45;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.wf-details {
  margin-top: 1rem;
  border-top: 1px dashed var(--border-color);
  padding-top: 0.75rem;
}

.wf-summary {
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--brand-primary);
  user-select: none;
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  background: var(--bg-surface-elevated, rgba(0,0,0,0.03));
  transition: background 0.2s;
}

.wf-summary:hover {
  background: rgba(44, 110, 73, 0.12);
}

.wf-detail-body {
  padding-top: 1.25rem;
  animation: fadeIn 0.3s ease-in-out;
}

/* 5. 에코 팩 전용 고가독성 표 시스템 (Academic Table System) */
.eco-table-wrap {
  width: 100%;
  margin: 1.5rem 0 2rem 0;
  overflow-x: auto;
  border-radius: var(--border-radius-md, 10px);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  -webkit-overflow-scrolling: touch;
}

.eco-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
  letter-spacing: -0.01em;
}

.eco-table thead th {
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
  font-family: var(--heading-font, var(--font-sans));
  font-weight: 700;
  padding: 0.95rem 1.15rem;
  border-bottom: 2px solid var(--border-color);
  white-space: nowrap;
  font-size: 0.88rem;
  letter-spacing: 0.02em;
}

.eco-table tbody td {
  padding: 0.95rem 1.15rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  line-height: 1.65;
  vertical-align: middle;
  word-break: keep-all;
}

.eco-table tbody tr:last-child td {
  border-bottom: none;
}

.eco-table tbody tr {
  transition: background-color 0.15s ease;
}

.eco-table tbody tr:hover {
  background-color: rgba(44, 110, 73, 0.04);
}
[data-theme="dark"] .eco-table tbody tr:hover {
  background-color: rgba(82, 183, 136, 0.06);
}

.eco-table td[rowspan] {
  background-color: var(--bg-surface-elevated);
  border-right: 1px solid var(--border-color);
  vertical-align: top;
  padding-top: 1.25rem;
}

.eco-table code {
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  background-color: var(--bg-surface-elevated);
  color: var(--brand-primary);
  border: 1px solid var(--border-color);
  white-space: nowrap;
}

.pass-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  background-color: rgba(44, 110, 73, 0.12);
  color: var(--brand-primary);
  border: 1px solid rgba(44, 110, 73, 0.25);
  white-space: nowrap;
}

[data-theme="dark"] .pass-tag {
  background-color: rgba(82, 183, 136, 0.15);
  color: #6ec499;
  border-color: rgba(82, 183, 136, 0.3);
}

.eco-table .col-num {
  text-align: center;
  font-weight: 700;
  color: var(--text-muted);
  width: 60px;
}

.eco-table .col-center {
  text-align: center;
}

/* ============================================================
   Section Spacing & Clean Layout (소개, 블로그, 북마크 중간선 제거)
============================================================ */
section:not(.hero-banner):not(:first-of-type),
.content-section {
  margin-top: 1.5rem;
  padding-top: 0;
  border-top: none;
}

/* Eco Archive Persona Pack Section Dividers (Tab 1 섹션 간 명확한 중간 구분선) */
#tab-eco .eco-section,
.tab-pane .eco-section {
  margin-top: 3.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-color) !important;
}

#tab-eco .eco-section:first-of-type,
.tab-pane .eco-section:first-of-type {
  margin-top: 2.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-color) !important;
}

/* Tab Panes Top Heading Alignment (모든 탭 상단 시작 간격 균일화) */
.tab-pane > .section-title:first-child,
.tab-pane > section:first-child > .section-title:first-child,
.tab-pane > section:first-child > h2:first-child {
  margin-top: 0;
  padding-top: 0;
}

.subsection-title {
  font-size: 1.18rem;
  color: var(--text-primary);
  margin: 2.25rem 0 1rem 0;
  border-bottom: none;
}

.subtle-badge {
  display: inline-block;
  font-family: var(--font-mono, monospace);
  font-size: 0.78rem;
  color: var(--brand-primary);
  background-color: var(--bg-surface-elevated);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
  margin-left: 0.35rem;
}

.research-lab-box {
  padding: 2.5rem 2rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-md);
  background-color: var(--bg-surface);
  margin-bottom: 2rem;
}


.wf-action-btn {
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 20px;
  border: 1px solid var(--brand-primary);
  background: var(--bg-surface);
  color: var(--brand-primary);
  cursor: pointer;
  font-family: var(--body-font);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.2s ease;
}

.wf-action-btn:hover {
  background: var(--brand-primary);
  color: #FFFFFF !important;
  box-shadow: 0 2px 6px rgba(44, 110, 73, 0.2);
}


/* ============================================================
   Horizontal Wide Blog Cards (블로그 가로형 와이드 카드)
============================================================ */
.blog-list-wide {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 100%;
  margin-top: 1rem;
}

.card-horizontal {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.75rem 2rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-md);
  transition: border-color var(--transition-speed), background-color var(--transition-speed), transform var(--transition-speed);
}

.card-horizontal:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.card-horizontal .card-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.card-horizontal .card-title {
  font-size: 1.28rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
  margin: 0.15rem 0;
}

.card-horizontal .card-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}

.card-horizontal .card-actions {
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

@media (max-width: 768px) {
  .card-horizontal {
    padding: 1.25rem 1.25rem;
  }
  .card-horizontal .card-title {
    font-size: 1.15rem;
  }
}

/* ============================================================
   Mermaid Diagrams Unified Visual Theme
============================================================ */
.mermaid {
  text-align: center;
  margin: 1.5rem 0;
  overflow-x: auto;
  font-family: var(--font-mono) !important;
}

.mermaid svg {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-sm);
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}