/* E2X 법적 고지 — 미니멀 플레인 텍스트 스타일
   대형 앱 약관 페이지(x.ai/legal 등) 톤. 카드/아이콘/그라데이션 없음. */

:root {
  --text: #1a1a1a;
  --text-secondary: #6b6b6b;
  --text-tertiary: #9a9a9a;
  --border: #e6e6e6;
  --border-strong: #d4d4d4;
  --bg: #ffffff;
  --bg-subtle: #fafafa;
  --bg-note: #f7f7f8;
  --accent: #b1202d;
  --todo-bg: #fff3cd;
  --todo-border: #d39e00;
  --todo-text: #7a5c00;
  --max-width: 720px;
  color-scheme: light;
}

/* ───────────────────────────────────────────────
   다크 테마
   적용 기준은 각 페이지 <head>의 인라인 스크립트가 결정한다:
     ① 저녁/야간 시간대(기본 로컬 18:00~06:00) 또는
     ② OS 다크 모드(prefers-color-scheme: dark)
   이면 <html data-theme="dark">로 설정.
   JS 미동작 시에도 OS가 다크면 아래 media 쿼리로 폴백된다.
   <html data-theme="light">이면 항상 라이트로 강제된다.
   ─────────────────────────────────────────────── */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --text: #e9e9ec;
    --text-secondary: #9a9aa3;
    --text-tertiary: #66666e;
    --border: #262629;
    --border-strong: #3a3a40;
    --bg: #0d0d0f;
    --bg-subtle: #161619;
    --bg-note: #161618;
    --accent: #ff6b70;
    --todo-bg: rgba(211, 158, 0, 0.14);
    --todo-border: #8a6f24;
    --todo-text: #e6c668;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --text: #e9e9ec;
  --text-secondary: #9a9aa3;
  --text-tertiary: #66666e;
  --border: #262629;
  --border-strong: #3a3a40;
  --bg: #0d0d0f;
  --bg-subtle: #161619;
  --bg-note: #161618;
  --accent: #ff6b70;
  --todo-bg: rgba(211, 158, 0, 0.14);
  --todo-border: #8a6f24;
  --todo-text: #e6c668;
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  transition: background-color 0.25s ease, color 0.25s ease;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
    system-ui, "Apple SD Gothic Neo", "Segoe UI", Roboto, "Noto Sans KR", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ── 헤더 ── */
.site-header {
  border-bottom: 1px solid var(--border);
}
.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}
.brand:hover { opacity: 0.7; }
.header-back {
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  white-space: nowrap;
}
.header-back:hover { color: var(--text); }

/* ── 본문 ── */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 56px 24px 96px;
}

.doc-title {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.25;
  margin: 0 0 14px;
}
.doc-subtitle {
  color: var(--text-secondary);
  font-size: 16px;
  margin: 0 0 20px;
}
.doc-meta {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 0;
}
.doc-meta + .doc-meta { margin-top: 2px; }

/* 시행일자 등 게시 전 입력 필요 플레이스홀더 */
.todo-marker {
  display: inline-block;
  background: var(--todo-bg);
  border: 1px dashed var(--todo-border);
  color: var(--todo-text);
  font-size: 13px;
  font-weight: 600;
  padding: 1px 8px;
  border-radius: 4px;
  letter-spacing: 0;
}

/* 헤더 메타 영역 구분선 */
.doc-header {
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
}

/* ── 섹션 ── */
section { margin-top: 44px; }
section:first-of-type { margin-top: 36px; }

h2 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.4;
  margin: 0 0 14px;
  scroll-margin-top: 24px;
}
h3 {
  font-size: 16px;
  font-weight: 700;
  margin: 26px 0 8px;
}

p { margin: 0 0 16px; }
p:last-child { margin-bottom: 0; }

ul, ol { margin: 0 0 16px; padding-left: 20px; }
li { margin: 6px 0; }
li::marker { color: var(--text-secondary); }

a {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--border-strong);
  text-underline-offset: 2px;
}
a:hover { text-decoration-color: var(--text); }

strong { font-weight: 700; }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.05em 0.35em;
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

/* ── 인용/안내 노트 ── */
blockquote {
  margin: 18px 0;
  padding: 14px 18px;
  background: var(--bg-note);
  border-left: 3px solid var(--border-strong);
  border-radius: 0 6px 6px 0;
  color: var(--text-secondary);
  font-size: 15px;
}
blockquote p { margin: 0 0 8px; }
blockquote p:last-child { margin: 0; }
blockquote strong { color: var(--text); }

/* ── 표 ── */
.table-wrap {
  overflow-x: auto;
  margin: 18px 0;
  -webkit-overflow-scrolling: touch;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  line-height: 1.6;
}
th, td {
  text-align: left;
  vertical-align: top;
  padding: 10px 14px;
  border: 1px solid var(--border);
}
th {
  background: var(--bg-subtle);
  font-weight: 700;
  white-space: nowrap;
}
td strong { font-weight: 700; }

/* ── 목차 ── */
.toc {
  margin: 28px 0 8px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-subtle);
}
.toc__label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin: 0 0 10px;
}
.toc ol, .toc ul {
  margin: 0;
  columns: 2;
  column-gap: 28px;
}
.toc ol { padding-left: 20px; }
.toc ul { padding-left: 0; list-style: none; }
.toc li { margin: 4px 0; break-inside: avoid; }
.toc a { text-decoration: none; color: var(--text-secondary); font-size: 14px; }
.toc a:hover { color: var(--text); text-decoration: underline; }

/* ── 법적 문서 인덱스 (루트) ── */
.index-intro {
  color: var(--text-secondary);
  font-size: 16px;
  margin: 0 0 36px;
}
.doc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--border);
}
.doc-list li { margin: 0; }
.doc-list a {
  display: block;
  padding: 22px 4px;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  transition: padding-left 0.15s ease;
}
.doc-list a:hover {
  padding-left: 10px;
}
.doc-list__title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.doc-list__title::after {
  content: "→";
  color: var(--text-tertiary);
  font-weight: 400;
  margin-left: auto;
}
.doc-list__desc {
  margin: 4px 0 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

/* ── 푸터 ── */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-subtle);
}
.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 36px 24px 44px;
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-bottom: 22px;
}
.footer-nav a {
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
}
.footer-nav a:hover { color: var(--text); }
.footer-brand {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 8px;
}
.footer-biz {
  font-size: 12.5px;
  color: var(--text-tertiary);
  line-height: 1.8;
  margin: 0 0 12px;
}
.footer-biz span { margin-right: 6px; }
.footer-biz a { color: var(--text-tertiary); }
.footer-copy {
  font-size: 12px;
  color: var(--text-tertiary);
  margin: 0;
}

/* ── 반응형 ── */
@media (max-width: 600px) {
  main { padding: 40px 20px 72px; }
  .doc-title { font-size: 26px; }
  h2 { font-size: 18px; }
  .toc ol { columns: 1; }
  .site-header__inner { padding: 16px 20px; }
  .site-footer__inner { padding: 32px 20px 40px; }
}
