/* =========================================================
   三藏閣 · 삼장각 — 불경 열람 사이트 (베이스)
   가독성 최우선. 책의 톤(한지 + 잉크 + 시그너처색)을 잇되,
   페이지 흔적은 최소화하고 화면 가독성에 맞게 재해석.
   ========================================================= */

@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.css');
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+KR:wght@300;400;500;600;700&family=Noto+Serif+SC:wght@400;500;600&family=Noto+Serif+Tibetan:wght@400;500;600&family=EB+Garamond:ital,wght@0,400;0,500;1,400&family=Inter:wght@400;500;600&display=swap');

:root {
  /* ---------- 학술지 톤: 백지 + 먹 + 단색 적(赤) ----------
     모든 색은 모노크롬 + 한 가지 시그너처 적색.
     색으로 차별화하지 않는다. 차별화는 타이포·여백·배치로.
     ----------------------------------------------------- */
  --paper:        #ffffff;   /* 본문 배경 = 순백 */
  --paper-soft:   #fafaf8;   /* 한 톤 낮은 배경 */
  --paper-deep:   #f4f3ee;   /* 카드 안쪽·푸터 등 */
  --paper-edge:   #ececea;
  --chrome:       #ffffff;
  --chrome-soft:  #f7f6f2;

  --ink:          #0f0f0e;   /* 본문 = 짙은 먹 */
  --ink-soft:     #2a2a28;
  --ink-mute:     #6b6b66;
  --ink-dim:      #a4a39e;

  --rule:         #c8c7c2;
  --rule-soft:    #e3e2dd;
  --rule-faint:   #efeeea;

  /* 단 하나의 시그너처 — 짙은 적색.
     CTA·활성 표시·검수 완료 배지·인용 표시에만 절제해서 사용. */
  --signal:       #8b1818;
  --signal-soft:  #b04848;
  --signal-wash:  rgba(139, 24, 24, 0.06);

  /* 하위 호환을 위한 레거시 alias — 모두 모노크롬으로 흡수 */
  --c-daisho:     var(--ink);
  --c-pali:       var(--ink);
  --c-tibet:      var(--ink);
  --c-gold:       #b6b3a8;        /* 표지 안 음각용 옅은 회색 */

  /* 하이라이트 — 메모용 매우 옅은 음영 */
  --hl-yellow:    #f4ecc7;
  --hl-blue:      #d6e2ea;
  --hl-green:     #d5e1d1;
  --hl-pink:      #ecd6d6;

  /* 활자 */
  --font-kr:      'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-kr-serif:'Noto Serif KR', serif;
  --font-cn:      'Noto Serif SC', 'Noto Serif KR', serif;
  --font-han:     var(--font-cn);          /* alias — knowledge.css 호환 */
  --font-skt:     'EB Garamond', 'Noto Serif', 'Gentium Plus', Georgia, serif;
  --font-pi:      'EB Garamond', 'Noto Serif', 'Gentium Plus', Georgia, serif;
  --font-tib:     'Noto Serif Tibetan', serif;
  --font-en:      'Inter', sans-serif;

  /* 호흡 (8px 기반) */
  --s1: 4px;  --s2: 8px;  --s3: 12px; --s4: 16px;
  --s5: 24px; --s6: 32px; --s7: 48px; --s8: 64px; --s9: 96px;

  /* 컨테이너 */
  --read-narrow:  640px;
  --read-normal:  820px;
  --read-wide:   1080px;
  /* 대조(parallel) 모드는 두 단을 띄우므로 더 넓게 */
  --read-parallel-narrow:  920px;
  --read-parallel-normal: 1180px;
  --read-parallel-wide:   1440px;

  /* 그림자 — 백지 위에서 너무 두드러지지 않도록 더 옅게 */
  --sh-1: 0 1px 2px rgba(15, 15, 14, 0.04);
  --sh-2: 0 4px 14px -4px rgba(15, 15, 14, 0.08);
  --sh-3: 0 12px 30px -12px rgba(15, 15, 14, 0.14);
}

/* ============================================================
   리셋
   ============================================================ */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  font-family: var(--font-kr);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  font-feature-settings: 'kern', 'palt', 'ss03';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; padding: 0; }
input, textarea, select { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
h1, h2, h3, h4, h5, h6, p { margin: 0; }

/* ============================================================
   유틸
   ============================================================ */
.wide-tracking   { letter-spacing: 0.18em; }
.xwide-tracking  { letter-spacing: 0.32em; }
.label {
  font-family: var(--font-en);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.label-kr {
  font-family: var(--font-kr);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.32em;
  color: var(--ink-mute);
}
.rule { height: 1px; background: var(--rule-soft); border: 0; }
.rule-strong { background: var(--rule); }

/* 한문 / 빨리 / 티벳 / 산스크리트 인라인 */
.han { font-family: var(--font-cn); letter-spacing: 0.04em; }
.pi  { font-family: var(--font-pi); font-style: italic; letter-spacing: 0.005em; }
.tib { font-family: var(--font-tib); line-height: 1.55; }
.skt { font-family: var(--font-pi); font-style: italic; }
.en  { font-family: var(--font-en); }

/* ============================================================
   아이콘 버튼 (공통)
   ============================================================ */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  color: var(--ink-soft);
  transition: background 120ms ease, color 120ms ease;
}
.icon-btn:hover { background: var(--chrome-soft); color: var(--ink); }
.icon-btn--active { background: var(--ink); color: var(--paper); }
.icon-btn--active:hover { background: var(--ink); color: var(--paper); }

/* ============================================================
   앱 셸
   ============================================================ */
#root { min-height: 100vh; }

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ============================================================
   헤더
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--rule-soft);
}
.site-header__inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--s5);
  height: 64px;
  display: flex;
  align-items: center;
  gap: var(--s4);
}
.site-header__brand {
  display: flex;
  align-items: baseline;
  gap: var(--s3);
  color: var(--ink);
}
.site-header__brand .brand-main {
  font-family: var(--font-kr);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
  white-space: nowrap;
}
.site-header__brand .brand-sub {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
  text-transform: uppercase;
  white-space: nowrap;
}
.site-header__sep {
  width: 1px;
  height: 22px;
  background: var(--rule);
  margin: 0 var(--s2);
}
.site-header__nav {
  display: flex;
  gap: var(--s5);
  margin-left: var(--s4);
}
.site-header__nav a {
  font-size: 13px;
  letter-spacing: 0.04em;
  white-space: nowrap;
  color: var(--ink-soft);
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: color 120ms ease, border 120ms ease;
}
.site-header__nav a:hover { color: var(--ink); }
.site-header__nav a.is-active {
  color: var(--ink);
  border-bottom-color: var(--signal);
  border-bottom-width: 2px;
  padding-bottom: 5px;
}
.site-header__spacer { flex: 1; }
.site-header__search-trigger {
  display: flex;
  align-items: center;
  gap: var(--s3);
  height: 38px;
  padding: 0 var(--s4);
  border-radius: 999px;
  background: var(--chrome-soft);
  border: 1px solid var(--rule-soft);
  color: var(--ink-mute);
  font-size: 13px;
  min-width: 220px;
  max-width: 320px;
}
.site-header__search-trigger:hover { border-color: var(--rule); color: var(--ink-soft); }
.site-header__search-trigger > span {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: left;
}
.site-header__search-trigger kbd {
  margin-left: auto;
  font-family: var(--font-en);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  padding: 2px 6px;
  border: 1px solid var(--rule);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--chrome);
  color: var(--ink-mute);
}
.site-header__icon-btn { color: var(--ink-soft); }
/* 데스크톱: 검색 트리거가 보이므로 별도 아이콘 버튼은 숨김 */
.site-header__icon-btn-search { display: none; }

/* 헤더 - 모바일 햄버거 */
.site-header__hamburger { display: none; }

/* ============================================================
   헤더 — 더보기 드롭다운
   ============================================================ */
.site-header__more-backdrop {
  position: fixed;
  inset: 64px 0 0 0;
  background: rgba(15, 15, 14, 0.10);
  backdrop-filter: blur(1px);
  z-index: 49;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 0 var(--s5);
  animation: more-fade 120ms ease;
}
@keyframes more-fade {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.site-header__more {
  width: min(640px, 100%);
  background: var(--paper);
  border: 1px solid var(--rule-soft);
  border-top: 0;
  border-bottom-left-radius: 6px;
  border-bottom-right-radius: 6px;
  box-shadow: var(--sh-3);
  padding: var(--s5) var(--s5) var(--s4);
  animation: more-slide 160ms cubic-bezier(.2,.7,.2,1);
}
@keyframes more-slide {
  from { transform: translateY(-8px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}
.site-header__more-eyebrow {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: var(--s4);
}
.site-header__more-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
.site-header__more-item {
  display: block;
  padding: 15px var(--s3);
  text-align: left;
  border-radius: 4px;
  transition: background 120ms ease;
  cursor: pointer;
}
.site-header__more-item:hover { background: var(--paper-deep); }
.site-header__more-item-kr {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.site-header__more-item-desc {
  font-size: 12.5px;
  color: var(--ink-mute);
  margin-top: 2px;
  letter-spacing: 0.02em;
}

/* ============================================================
   라이브러리 (랜딩)
   ============================================================ */
.library {
  flex: 1;
  background:
    radial-gradient(circle at 18% 20%, rgba(160,130,80,0.05) 0%, transparent 50%),
    radial-gradient(circle at 85% 85%, rgba(120,90,50,0.04) 0%, transparent 55%),
    var(--paper);
}
.library__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--s8) var(--s5) var(--s9);
}

.library__hero {
  text-align: left;
  margin-bottom: var(--s8);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: var(--s5);
  padding-bottom: var(--s7);
  border-bottom: 1px solid var(--rule-soft);
}
.library__hero-label {
  font-family: var(--font-en);
  font-size: 10.5px;
  letter-spacing: 0.4em;
  color: var(--ink-mute);
  margin-bottom: var(--s4);
}
.library__hero-title {
  font-family: var(--font-kr);
  font-weight: 200;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--ink);
  max-width: 18ch;
}
.library__hero-title strong {
  font-weight: 500;
  color: var(--ink);
}
.library__hero-title em {
  font-style: normal;
  font-family: var(--font-cn);
  font-weight: 400;
  letter-spacing: 0.06em;
}
.library__hero-sub {
  margin-top: var(--s4);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 50ch;
}
.library__hero-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
  text-align: right;
}
.library__hero-meta strong { color: var(--ink); font-weight: 500; }
.library__hero-meta-zh { font-family: var(--font-cn); letter-spacing: 0.18em; }
.library__hero-meta > * { white-space: nowrap; }

/* 섹션 헤더 */
.lib-section { margin-top: var(--s8); }
.lib-section:first-of-type { margin-top: 0; }
.lib-section__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s4);
  margin-bottom: var(--s5);
  padding-bottom: var(--s3);
  border-bottom: 1px solid var(--rule-soft);
}
.lib-section__title {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink);
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  white-space: nowrap;
}
.lib-section__title-zh {
  font-family: var(--font-cn);
  font-weight: 400;
  font-size: 16px;
  margin-left: var(--s2);
  color: var(--ink-mute);
  letter-spacing: 0.16em;
}
.lib-section__count {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--ink-mute);
}

/* ============================================================
   대장경 카드 (도서관 표지 그리드)
   백지 위 학술지 톤 — 모노크롬, 검은 표지 + 회색 음각
   ============================================================ */
.canon-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s5);
}
.canon-card {
  display: grid;
  grid-template-rows: 320px auto;
  background: var(--chrome);
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  overflow: hidden;
  text-align: left;
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
}
.canon-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh-3);
  border-color: var(--rule);
}
.canon-card__cover {
  position: relative;
  background: #0f0f0e;            /* 모든 표지 동일 — 먹색 */
  color: rgba(255, 255, 255, 0.92);
  display: flex;
  flex-direction: column;
  padding: 28px 26px 26px;
  overflow: hidden;
}
.canon-card__cover::before,
.canon-card__cover::after {
  content: '';
  position: absolute;
  border: 0.5px solid rgba(255, 255, 255, 0.18);
  pointer-events: none;
}
.canon-card__cover::before { inset: 14px; }
.canon-card__cover::after { inset: 18px; border-color: rgba(255, 255, 255, 0.09); }

.canon-card__cover-roman {
  position: relative;
  font-family: var(--font-pi);
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.55);
  z-index: 1;
}
.canon-card__cover-zh {
  position: relative;
  font-family: var(--font-cn);
  font-weight: 400;
  font-size: 32px;
  letter-spacing: 0.10em;
  color: rgba(255, 255, 255, 0.96);
  margin-top: auto;
  margin-bottom: 6px;
  z-index: 1;
  line-height: 1.15;
}
.canon-card__cover-kr {
  position: relative;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.32em;
  color: rgba(255, 255, 255, 0.55);
  z-index: 1;
}
.canon-card__cover-line {
  position: absolute;
  top: 50%;
  left: 18px;
  right: 18px;
  height: 1px;
  background: rgba(255, 255, 255, 0.10);
}
.canon-card__cover-stamp {
  position: absolute;
  bottom: 18px;
  right: 18px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 0.5px solid rgba(255, 255, 255, 0.30);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-pi);
  font-style: italic;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.72);
  z-index: 1;
}

.canon-card__body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: var(--s3);
}
.canon-card__title {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--ink);
}
.canon-card__title-en {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.32em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-top: 2px;
}
.canon-card__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}
.canon-card__meta {
  display: flex;
  gap: var(--s4);
  padding-top: var(--s3);
  border-top: 1px solid var(--rule-faint);
  margin-top: auto;
}
.canon-card__meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.canon-card__meta-key {
  font-family: var(--font-en);
  font-size: 9.5px;
  letter-spacing: 0.32em;
  color: var(--ink-dim);
  text-transform: uppercase;
}
.canon-card__meta-val {
  font-size: 13px;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.canon-card__meta-val-zh { font-family: var(--font-cn); }

/* ============================================================
   최근 읽음 / 입문 추천 — 리스트
   ============================================================ */
.entry-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s5);
}
.entry-row {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  gap: var(--s4);
  align-items: center;
  padding: var(--s4);
  background: var(--chrome);
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  text-align: left;
  width: 100%;
  transition: border-color 120ms ease, background 120ms ease;
}
.entry-row:hover { border-color: var(--rule); background: var(--paper-soft); }
.entry-row__chip {
  width: 56px;
  height: 70px;
  background: #0f0f0e;
  border-radius: 2px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 6px 4px;
  color: rgba(255, 255, 255, 0.72);
  font-family: var(--font-pi);
  font-style: italic;
  font-size: 10px;
  letter-spacing: 0.12em;
  position: relative;
}
.entry-row__chip::before {
  content: '';
  position: absolute;
  inset: 4px;
  border: 0.5px solid rgba(255, 255, 255, 0.18);
  pointer-events: none;
}
.entry-row__chip-zh {
  font-family: var(--font-cn);
  font-style: normal;
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1;
  color: rgba(255, 255, 255, 0.96);
}
.entry-row__main {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}
.entry-row__title {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.005em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.entry-row__title .han {
  font-weight: 500;
  margin-right: 6px;
  color: var(--ink-soft);
}
.entry-row__sub {
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
}
.entry-row__progress {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  min-width: 64px;
}
.entry-row__pct {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}
.entry-row__bar {
  width: 60px;
  height: 2px;
  background: var(--rule-soft);
  border-radius: 1px;
  overflow: hidden;
}
.entry-row__bar-fill { height: 100%; background: var(--ink); }

/* 입문 추천 카드 */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s5);
}
.feature-card {
  background: var(--chrome);
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  padding: var(--s5);
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: var(--s3);
  transition: border-color 120ms ease;
}
.feature-card:hover { border-color: var(--rule); }
.feature-card__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: var(--s3);
  border-bottom: 1px solid var(--rule-faint);
}
.feature-card__zh {
  font-family: var(--font-cn);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink);
}
.feature-card__num {
  font-family: var(--font-en);
  font-size: 10.5px;
  letter-spacing: 0.32em;
  color: var(--ink-dim);
}
.feature-card__title {
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
}
.feature-card__lead {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}
.feature-card__excerpt {
  font-size: 13px;
  line-height: 1.85;
  color: var(--ink);
  font-feature-settings: 'kern', 'palt';
  padding-left: var(--s3);
  border-left: 2px solid var(--signal);
  margin-top: var(--s2);
}
.feature-card__meta {
  display: flex;
  gap: var(--s3);
  margin-top: auto;
  padding-top: var(--s3);
  font-family: var(--font-en);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
  text-transform: uppercase;
}

/* ============================================================
   푸터
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--rule-soft);
  padding: var(--s7) var(--s5);
  background: var(--chrome-soft);
}
.site-footer__inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--s7);
}
.site-footer__col h4 {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: var(--s3);
}
.site-footer__col p,
.site-footer__col a {
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-soft);
  display: block;
}
.site-footer__col a:hover { color: var(--ink); }
.site-footer__brand {
  font-family: var(--font-kr);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
  margin-bottom: var(--s3);
}
.site-footer__legal {
  margin-top: var(--s7);
  padding-top: var(--s4);
  border-top: 1px solid var(--rule-soft);
  font-size: 11.5px;
  color: var(--ink-mute);
  display: flex;
  justify-content: space-between;
  font-family: var(--font-en);
  letter-spacing: 0.04em;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
}