/* --- readme.css ---
 * 역할: README 사용 가이드 페이지 스타일
 * 설명: 공통 변수 → 기본 요소 → 화면 구성 → 조건별 규칙의 흐름을 따르며 기존 캐스케이드 순서를 보존합니다.
*/

/* --- 테마 변수 (Theme Variables) --- */
:root { --blue: #2463eb; --ink: #172b4d; --text: #42536b; --muted: #63758c; --line: #e3eaf2; --bg: #f4f7fb }
/* --- 공통 요소·레이아웃 (Shared Elements) --- */
* { box-sizing: border-box }
html { scroll-behavior: smooth; scroll-padding-top: 90px }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.75 system-ui, -apple-system, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif; word-break: keep-all }
a { color: var(--blue); text-decoration: none }
/* --- 사용 가이드 구성 (Guide Layout) --- */
a:focus-visible, summary:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px }
header { background: #ffffffee; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 2; backdrop-filter: blur(12px) }
/* --- 공통 요소·레이아웃 (Shared Elements) --- */
.bar { max-width: 1120px; margin: auto; padding: 17px 28px; display: flex; align-items: center; justify-content: space-between; gap: 20px }
/* --- 사용 가이드 구성 (Guide Layout) --- */
nav button, .sidebar button { font: inherit; color: inherit; cursor: pointer; text-align: left; background: none; }
nav button { border: 0; }
.sidebar button { display: block; width: 100%; padding: 12px 14px; border: 0; border-radius: 10px; white-space: nowrap; }
.sidebar button:hover { background: #edf4ff; }
.bar nav { display: flex; gap: 22px; font-size: 13px }
.bar nav a { color: var(--text) }
/* --- 공통 요소·레이아웃 (Shared Elements) --- */
main { max-width: 1064px; margin: auto; padding: 68px 0 64px }
.hero { padding: 0 12px 42px; max-width: 880px }
.eyebrow { color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: .14em; margin-bottom: 17px }
h1 { font-size: clamp(34px, 5vw, 54px); line-height: 1.23; letter-spacing: -2px; color: var(--ink); margin: 0 0 24px }
h1 em { font-style: normal; color: var(--blue) }
.lead { font-size: 18px; line-height: 1.8; max-width: 680px; color: var(--muted) }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px }
.button { display: inline-flex; align-items: center; justify-content: center; padding: 13px 23px; border-radius: 12px; font-size: 15px; font-weight: 700; background: var(--blue); color: #fff }
.button.secondary { background: #fff; color: var(--ink); border: 1px solid var(--line) }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); background: #fff; border: 1px solid var(--line); border-radius: 20px; margin-bottom: 28px; overflow: hidden }
.metric { padding: 27px 30px; border-right: 1px solid var(--line) }
.metric:last-child { border: 0 }
.metric small { display: block; color: var(--muted); font-size: 13px }
.metric strong { font-size: 32px; color: var(--ink); letter-spacing: -1px }
.metric strong span { font-size: 16px; color: var(--muted); font-weight: 500; margin-left: 4px }
.metric p { margin: 3px 0 0; font-size: 13px; color: var(--muted) }
.layout { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 28px }
/* --- 사용 가이드 구성 (Guide Layout) --- */
.sidebar { align-self: start; position: sticky; top: 90px; padding: 15px 10px }
.sidebar p { color: var(--muted); font-size: 11px; letter-spacing: .1em; font-weight: 700 }
.sidebar a { display: block; color: var(--text); padding: 9px 0; font-size: 14px }
.sidebar a:hover { color: var(--blue) }
.content { min-width: 0 }
.card { border: 1px solid var(--line); border-radius: 20px; padding: 34px; background: white; margin-bottom: 20px }
/* --- 공통 요소·레이아웃 (Shared Elements) --- */
h2 { font-size: 25px; letter-spacing: -1px; color: var(--ink); line-height: 1.4; margin: 0 0 12px }
h3 { font-size: 17px; color: var(--ink); display: inline; margin: 24px 0 8px }
.label { font-size: 11px; letter-spacing: .1em; color: var(--blue); font-weight: 800; margin-bottom: 10px }
.sub { color: var(--muted); margin: 0 0 24px; font-size: 14px }
/* --- 사용 가이드 구성 (Guide Layout) --- */
.step { display: grid; grid-template-columns: 32px 1fr; gap: 14px; margin-top: 22px }
/* --- 공통 요소·레이아웃 (Shared Elements) --- */
.number { display: flex; align-items: center; justify-content: center; width: 30px; height: 30px; border-radius: 10px; background: #edf3ff; color: var(--blue); font-weight: 750; font-size: 13px }
/* --- 사용 가이드 구성 (Guide Layout) --- */
.step strong { color: var(--ink) }
.step p { margin: 3px 0; font-size: 14px }
/* --- 공통 요소·레이아웃 (Shared Elements) --- */
.callout { background: #eef5ff; border-radius: 12px; padding: 17px 19px; font-size: 14px; color: #285188; margin: 22px 0 0 }
.callout.warn { background: #fff6e7; color: #805719 }
code { font: 13px/1.7 ui-monospace, SFMono-Regular, Consolas, monospace; background: #eef2f7; color: #254b83; padding: 3px 5px; border-radius: 4px; overflow-wrap: anywhere }
pre { background: #13253d; color: #d9e9ff; padding: 22px; border-radius: 13px; overflow: auto; font: 13px/1.85 ui-monospace, Consolas, monospace; word-break: normal }
pre code { padding: 0; background: none; color: inherit }
.table-wrap { overflow: auto }
table { width: 100%; border-collapse: collapse; font-size: 13px; text-align: left }
th { font-weight: 600; color: var(--muted); padding: 12px 10px; background: #f5f8fc; white-space: nowrap }
td { padding: 14px 10px; border-bottom: 1px solid var(--line); vertical-align: top }
td:first-child { color: var(--ink) }
ul { padding-left: 20px; font-size: 14px }
li { margin: 8px 0 }
.keys { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px }
.key { background: #f5f8fc; border: 1px solid var(--line); border-radius: 9px; padding: 9px 12px; font-size: 13px }
kbd { font: 600 12px system-ui; color: var(--ink) }
/* --- 사용 가이드 구성 (Guide Layout) --- */
details { border-top: 1px solid var(--line); padding: 16px 0 }
summary { cursor: pointer; font-weight: 650; color: var(--ink); font-size: 15px }
details p { font-size: 14px; margin-bottom: 0 }
/* --- 메뉴·브랜드·안내 (Menu and Branding) --- */
footer { max-width: 1064px; margin: 40px auto 0; padding: 24px 12px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px 20px; }
footer span { display: block; }
/* --- 시작 전 점검·실행 (Startup Check) --- */
.statusline { display: flex; gap: 8px; align-items: center; font-size: 13px; color: #187557 }
.statusline:before { content: ""; height: 7px; width: 7px; background: #1d9d73; border-radius: 50% }
/* --- 반응형·조건별 적용 (Conditional Rules) --- */
@media (max-width:900px) {
  /* --- 공통 요소·레이아웃 (Shared Elements) --- */
  main { padding: 40px 20px }
  .layout { display: block }
  /* --- 사용 가이드 구성 (Guide Layout) --- */
  .sidebar { display: none }
  .bar nav { gap: 12px }
  /* --- 공통 요소·레이아웃 (Shared Elements) --- */
  .hero { padding-left: 0 }
  /* --- 사용 가이드 구성 (Guide Layout) --- */
  .card { padding: 26px }
  /* --- 공통 요소·레이아웃 (Shared Elements) --- */
  .metric { padding: 20px }
}
/* --- 반응형·조건별 적용 (Conditional Rules) --- */
@media (max-width:560px) {
  /* --- 공통 요소·레이아웃 (Shared Elements) --- */
  .bar { padding: 14px 18px }
  /* --- 사용 가이드 구성 (Guide Layout) --- */
  .bar nav { display: none }
  /* --- 공통 요소·레이아웃 (Shared Elements) --- */
  .version { font-size: 10px }
  .lead { font-size: 16px }
  .metrics { grid-template-columns: 1fr }
  .metric { border-right: 0; border-bottom: 1px solid var(--line) }
  .metric strong { font-size: 28px }
  /* --- 사용 가이드 구성 (Guide Layout) --- */
  .card { padding: 22px }
  /* --- 공통 요소·레이아웃 (Shared Elements) --- */
  h2 { font-size: 23px }
  /* --- 메뉴·브랜드·안내 (Menu and Branding) --- */
  footer { display: block }
  /* --- 공통 요소·레이아웃 (Shared Elements) --- */
  body { font-size: 15px }
}
/* --- 반응형·조건별 적용 (Conditional Rules) --- */
@media (prefers-reduced-motion:reduce) {
  /* --- 공통 요소·레이아웃 (Shared Elements) --- */
  html { scroll-behavior: auto }
}
/* --- 반응형·조건별 적용 (Conditional Rules) --- */
@media print {
  /* --- 사용 가이드 구성 (Guide Layout) --- */
  header, .sidebar, .actions { display: none }
  /* --- 공통 요소·레이아웃 (Shared Elements) --- */
  main { padding: 0 }
  .layout { display: block }
  /* --- 사용 가이드 구성 (Guide Layout) --- */
  .card { break-inside: avoid }
  /* --- 공통 요소·레이아웃 (Shared Elements) --- */
  .metrics { margin-top: 20px }
  body { background: #fff }
  /* --- 메뉴·브랜드·안내 (Menu and Branding) --- */
  footer { display: block }
}
/* --- 메뉴·브랜드·안내 (Menu and Branding) --- */
.bar .brand { display: flex; align-items: center; justify-content: space-between; gap: 16px; color: #66758a; font-size: 12px; line-height: normal; letter-spacing: normal; }
.bar .brand-lockup { display: flex; align-items: center; gap: 13px; min-width: 0; }
.bar .brand-symbol { display: grid; grid-template-columns: repeat(2, 9px); grid-template-rows: repeat(2, 9px); gap: 4px; align-content: center; justify-content: center; width: 50px; height: 50px; flex-shrink: 0; border: 1px solid #ffffff70; border-radius: 16px; background: linear-gradient(145deg, #4c98ff, #2469e3); box-shadow: 0 6px 16px #3182f62b; transform: rotate(-5deg); }
.bar .brand-symbol i { background: #fff; border-radius: 2px; }
.bar .brand-symbol i:nth-child(2) { opacity: .5; }
.bar .brand-symbol i:nth-child(3) { opacity: .75; }
.bar .brand-copy { display: flex; flex-direction: column; gap: 5px; }
.bar .brand .mark { color: #191f28; font-size: 20px; line-height: 1.2; font-weight: 800; letter-spacing: -.04em; }
.bar .brand-caption { font-size: 10px; font-weight: 650; letter-spacing: .14em; color: #66758a; }
.bar .brand .edition { display: inline-flex; align-items: center; gap: 7px; flex-shrink: 0; padding: 8px 11px; border: 1px solid #d5e5ff; border-radius: 9px; font-size: 10px; font-weight: 700; letter-spacing: .08em; background: #eaf2ff; color: #286bd1; }
/* --- 사용 가이드 구성 (Guide Layout) --- */
.step>div { min-width: 0; }
.file-tree { margin: 14px 0; white-space: pre; tab-size: 4; }
.file-tree code { white-space: pre; overflow-wrap: normal; word-break: normal; }
.help-details { margin-top: 25px; }
/* --- 반응형·조건별 적용 (Conditional Rules) --- */
@media (max-width:480px) {
  /* --- 메뉴·브랜드·안내 (Menu and Branding) --- */
  .bar .brand { gap: 10px; }
  .bar .brand-symbol { width: 42px; height: 42px; border-radius: 13px; }
  .bar .brand-lockup { gap: 10px; }
  .bar .brand .mark { font-size: 18px; }
  .bar .brand-caption { font-size: 8px; letter-spacing: .1em; }
  .bar .brand .edition { font-size: 8px; padding: 7px 8px; }
}