/* ========================================================
   학술 백과사전 — 공통 스타일시트
   톤: 출판된 학술지 / 종이 + 잉크 + 황동
   ======================================================== */

:root {
  --paper: #FAF7F0;
  --paper-2: #F2EDDF;
  --ink: #14202E;
  --ink-soft: #3A4757;
  --margin: #6B6258;
  --rule: #D9CFB8;
  --rule-strong: #1F2D3D;
  --brass: #A6822E;
  --brass-soft: #C9A24A;
  --sage: #4A5D4F;
  --bg-card: #FFFFFF;
  --shadow: 0 1px 0 rgba(20,32,46,0.04), 0 8px 24px rgba(20,32,46,0.05);

  --font-serif: "Noto Serif KR", "Source Serif Pro", Georgia, "Nanum Myeongjo", serif;
  --font-sans: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
               "Malgun Gothic", "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --max: 1080px;
  --max-read: 720px;
}

@media (prefers-color-scheme: dark) {
  /* 의도적으로 라이트 모드만 사용 — 학술지 인쇄 느낌을 일관되게 유지 */
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--brass-soft);
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color .15s ease, text-decoration-color .15s ease;
}
a:hover { color: var(--brass); text-decoration-color: var(--brass); }
a:focus-visible { outline: 2px solid var(--brass); outline-offset: 3px; border-radius: 2px; }

/* ===== 상단 마스트헤드 ===== */
.masthead {
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
}
.masthead-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px 24px 14px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.brand {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  line-height: 1.1;
}
.brand .brand-sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--margin);
  margin-top: 4px;
}
.masthead-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--margin);
}

/* ===== 네비게이션 ===== */
.nav {
  border-bottom: 1px solid var(--rule);
  background: var(--paper-2);
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.nav a {
  text-decoration: none;
  color: var(--ink-soft);
  padding: 4px 0;
}
.nav a:hover, .nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom: 1px solid var(--brass);
}

/* ===== 메인 컨테이너 ===== */
main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.container-read {
  max-width: var(--max-read);
  margin: 0 auto;
}

/* ===== 페이지 헤더 (서브페이지용) ===== */
.page-header {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 28px;
  margin-bottom: 40px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 28px;
  align-items: center;
}
.glyph {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(96px, 18vw, 168px);
  line-height: 0.85;
  color: var(--ink);
  letter-spacing: -0.04em;
  position: relative;
}
.glyph::after {
  content: "";
  position: absolute;
  right: -8px;
  bottom: 14px;
  width: 14px;
  height: 14px;
  background: var(--brass);
  border-radius: 50%;
}
.page-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--margin);
  margin: 0 0 10px;
}
.page-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 8px;
  color: var(--ink);
}
.page-lede {
  font-size: 17px;
  color: var(--ink-soft);
  margin: 8px 0 0;
  max-width: 56ch;
}

@media (max-width: 640px) {
  .page-header { grid-template-columns: 1fr; gap: 8px; }
  .glyph { font-size: 96px; }
}

/* ===== 인덱스 (메인) 히어로 ===== */
.hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: end;
  padding: 24px 0 56px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 48px;
}
.hero h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 16px 0 24px;
  color: var(--ink);
}
.hero h1 em {
  font-style: italic;
  color: var(--brass);
  font-weight: 700;
}
.hero p {
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin: 0 0 20px;
}
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--margin);
}
.hero-meta {
  border-left: 1px solid var(--rule);
  padding-left: 32px;
}
.hero-meta dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--margin);
  margin-top: 14px;
}
.hero-meta dt:first-child { margin-top: 0; }
.hero-meta dd {
  font-family: var(--font-serif);
  font-size: 18px;
  margin: 4px 0 0;
  color: var(--ink);
}

@media (max-width: 800px) {
  .hero { grid-template-columns: 1fr; gap: 32px; padding: 8px 0 40px; }
  .hero-meta { border-left: 0; padding-left: 0; border-top: 1px solid var(--rule); padding-top: 24px; }
}

/* ===== 카테고리 카드 그리드 (메인) ===== */
.section-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--margin);
  margin: 0 0 24px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
}

.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0;
  border-top: 1px solid var(--rule);
  margin-bottom: 56px;
}
.cat-card {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 16px;
  padding: 24px 20px;
  border-bottom: 1px solid var(--rule);
  border-right: 1px solid var(--rule);
  text-decoration: none;
  color: var(--ink);
  background: var(--paper);
  transition: background .15s ease;
  align-items: start;
}
.cat-card:hover { background: #FFFDF6; }
.cat-card:nth-child(3n) { border-right: 0; }
@media (max-width: 920px) {
  .cat-card { border-right: 1px solid var(--rule); }
  .cat-card:nth-child(2n) { border-right: 0; }
}
@media (max-width: 560px) {
  .cat-card { border-right: 0; }
}

.cat-glyph {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 56px;
  line-height: 0.9;
  color: var(--ink);
  letter-spacing: -0.04em;
}
.cat-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--margin);
  margin-bottom: 6px;
}
.cat-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.3;
  color: var(--ink);
  margin: 0 0 6px;
}
.cat-desc {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.5;
  margin: 0;
}

/* ===== 특수 섹션 카드 ===== */
.special-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 56px;
}
.special-card {
  border: 1px solid var(--rule);
  padding: 28px;
  background: var(--bg-card);
  text-decoration: none;
  color: var(--ink);
  transition: border-color .15s ease;
}
.special-card:hover { border-color: var(--brass); }
.special-card .cat-meta { color: var(--brass); }
.special-card h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.25;
  margin: 4px 0 10px;
}
.special-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
  margin: 0;
}
@media (max-width: 720px) {
  .special-grid { grid-template-columns: 1fr; }
}

/* ===== 본문 (article) 타이포 ===== */
.article {
  margin-top: 8px;
}
.article h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 26px;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 56px 0 8px;
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 8px;
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.article h2 .entry-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--brass);
  font-weight: 500;
  flex-shrink: 0;
}
.article h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  margin: 28px 0 8px;
  color: var(--ink);
}
.article p {
  margin: 12px 0;
  color: var(--ink);
}
.article p + p { margin-top: 14px; }

.article ul, .article ol {
  margin: 14px 0;
  padding-left: 22px;
}
.article li { margin: 6px 0; }
.article li::marker { color: var(--brass); }

.article blockquote {
  border-left: 3px solid var(--brass);
  padding: 4px 0 4px 20px;
  margin: 24px 0;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--ink-soft);
  font-size: 17px;
}

.article code, .article kbd {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--paper-2);
  padding: 1px 6px;
  border-radius: 3px;
  border: 1px solid var(--rule);
}

.callout {
  background: var(--paper-2);
  border-left: 3px solid var(--sage);
  padding: 16px 20px;
  margin: 28px 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink-soft);
}
.callout strong { color: var(--ink); }

/* ===== 정의 리스트 (학술 사전 본체) ===== */
.term-list { margin: 24px 0; }
.term-list dt {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
  margin-top: 18px;
}
.term-list dt:first-child { margin-top: 0; }
.term-list dd {
  margin: 4px 0 0;
  padding-left: 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.65;
}

/* ===== 목차 (개체 사전 항목 인덱스) ===== */
.toc {
  background: var(--paper-2);
  border: 1px solid var(--rule);
  padding: 20px 24px;
  margin: 32px 0 48px;
}
.toc-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--margin);
  margin: 0 0 12px;
}
.toc ol {
  margin: 0;
  padding-left: 0;
  list-style: none;
  columns: 2;
  column-gap: 32px;
}
.toc li {
  font-family: var(--font-serif);
  font-size: 15px;
  padding: 4px 0;
  break-inside: avoid;
}
.toc li::before {
  content: counter(toc, decimal-leading-zero) "  ";
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--brass);
  letter-spacing: 0.06em;
}
.toc ol { counter-reset: toc; }
.toc li { counter-increment: toc; }
.toc a { text-decoration: none; color: var(--ink); }
.toc a:hover { color: var(--brass); }
@media (max-width: 600px) {
  .toc ol { columns: 1; }
}

/* ===== 다음/이전 네비게이션 ===== */
.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  margin: 64px 0 24px;
}
.pager a {
  padding: 20px 24px;
  text-decoration: none;
  color: var(--ink);
  display: block;
}
.pager a:first-child { border-right: 1px solid var(--rule); }
.pager a:hover { background: var(--paper-2); }
.pager .pager-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--margin);
  margin-bottom: 4px;
}
.pager .pager-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 16px;
}
.pager .pager-next { text-align: right; }
@media (max-width: 560px) {
  .pager { grid-template-columns: 1fr; }
  .pager a:first-child { border-right: 0; border-bottom: 1px solid var(--rule); }
  .pager .pager-next { text-align: left; }
}

/* ===== 푸터 ===== */
footer.colophon {
  border-top: 1px solid var(--rule-strong);
  background: var(--paper);
  margin-top: 80px;
  padding: 40px 24px 32px;
  font-size: 13px;
  color: var(--ink-soft);
}
.colophon-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}
.colophon h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--margin);
  margin: 0 0 12px;
}
.colophon ul { list-style: none; padding: 0; margin: 0; }
.colophon ul li { padding: 3px 0; }
.colophon ul a { text-decoration: none; color: var(--ink); }
.colophon ul a:hover { color: var(--brass); }
.colophon-mark {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
  margin: 0 0 6px;
}
.colophon-fineprint {
  border-top: 1px solid var(--rule);
  margin-top: 32px;
  padding-top: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--margin);
  text-align: center;
}
@media (max-width: 700px) {
  .colophon-inner { grid-template-columns: 1fr; gap: 28px; }
}

/* ===== 접근성 ===== */
.skip-link {
  position: absolute;
  left: -10000px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  z-index: 100;
  text-decoration: none;
}
.skip-link:focus { left: 8px; top: 8px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===== 인쇄 ===== */
@media print {
  .nav, .pager, footer.colophon { display: none; }
  body { background: white; color: black; }
  a { text-decoration: none; color: black; }
}