/* =============================================================
 * style.css  —  공용 스타일시스템
 * 색상은 :root 의 CSS 변수로 관리되며, common.js 가
 * site.config.js 의 colors 값으로 이 변수들을 덮어씁니다.
 * (따라서 색상 변경은 site.config.js 에서 합니다.)
 * ============================================================= */

:root {
  --color-main: #6B4226;
  --color-sub: #5E8C61;
  --color-bg: #FAF7F2;
  --color-surface: #FFFFFF;
  --color-text: #2B2420;
  --color-muted: #7A6E63;
  --color-border: #ECE3D7;
  --color-main-soft: rgba(107, 66, 38, 0.08);
  --color-sub-soft: rgba(94, 140, 97, 0.12);

  --radius: 8px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(43, 36, 32, 0.04), 0 8px 24px rgba(43, 36, 32, 0.06);
  --shadow-sm: 0 1px 2px rgba(43, 36, 32, 0.06);
  --maxw: 1080px;
  --maxw-read: 720px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo",
    "Malgun Gothic", "맑은 고딕", Roboto, "Noto Sans KR", sans-serif;
}

/* --- reset --- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.75;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: var(--color-main); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.35; color: var(--color-text); font-weight: 700; }
ul, ol { padding-left: 1.2em; }

/* --- layout helpers --- */
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.section { padding: 56px 0; }
.section--tight { padding: 36px 0; }
.muted { color: var(--color-muted); }
.center { text-align: center; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--color-main);
  color: #fff; padding: 10px 16px; z-index: 1000; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* --- header / nav --- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: saturate(120%) blur(6px);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; height: 64px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; color: var(--color-text); }
.brand:hover { text-decoration: none; }
.brand__mark {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--color-main); color: #fff;
  display: grid; place-items: center; font-size: 18px;
}
.brand__name small { display: block; font-size: 11px; font-weight: 500; color: var(--color-muted); letter-spacing: .2px; }
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  color: var(--color-text); padding: 8px 12px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 600;
}
.main-nav a:hover { background: var(--color-main-soft); text-decoration: none; }
.main-nav a[aria-current="page"] { color: var(--color-main); background: var(--color-main-soft); }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); width: 42px; height: 38px; cursor: pointer; font-size: 18px;
}

/* --- buttons --- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--color-main); color: #fff; border: 1px solid var(--color-main);
  padding: 11px 20px; border-radius: 999px; font-weight: 700; font-size: 15px;
  cursor: pointer; transition: transform .05s ease, opacity .15s ease;
}
.btn:hover { text-decoration: none; opacity: .92; }
.btn:active { transform: translateY(1px); }
.btn--ghost { background: transparent; color: var(--color-main); }
.btn--sub { background: var(--color-sub); border-color: var(--color-sub); }
.btn--block { width: 100%; justify-content: center; }
.btn--sm { padding: 7px 14px; font-size: 13px; }

/* --- hero --- */
.hero {
  background:
    radial-gradient(900px 400px at 85% -10%, var(--color-sub-soft), transparent 60%),
    radial-gradient(700px 380px at 5% 0%, var(--color-main-soft), transparent 55%);
  border-bottom: 1px solid var(--color-border);
}
.hero__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.78fr);
  gap: 38px;
  align-items: center;
  padding: 56px 0 48px;
}
.hero__inner { max-width: 760px; }
.hero__eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .4px;
  color: var(--color-sub); background: var(--color-sub-soft);
  padding: 6px 12px; border-radius: 999px; margin-bottom: 18px;
}
.hero h1 { font-size: 40px; margin: 0 0 16px; letter-spacing: -0.5px; }
.hero p { font-size: 18px; color: var(--color-muted); margin: 0 0 28px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero__media {
  margin: 0;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--color-surface);
}
.hero__media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

/* --- cards / grid --- */
.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-sm);
  transition: box-shadow .15s ease, transform .1s ease;
  display: flex; flex-direction: column; height: 100%;
}
.card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.card a { text-decoration: none; }
.card__cat {
  font-size: 12px; font-weight: 700; color: var(--color-sub);
  text-transform: none; margin-bottom: 8px;
}
.card__title { font-size: 18px; margin: 0 0 8px; color: var(--color-text); }
.card__title a { color: inherit; }
.card__title a:hover { color: var(--color-main); }
.card__desc { color: var(--color-muted); font-size: 15px; margin: 0 0 14px; flex: 1; }
.card__meta { font-size: 13px; color: var(--color-muted); display: flex; gap: 10px; flex-wrap: wrap; }
.card__badge {
  display: inline-block; font-size: 11px; font-weight: 700; color: var(--color-main);
  background: var(--color-main-soft); padding: 3px 9px; border-radius: 999px; margin-left: 6px;
}

/* category tile */
.cat-tile {
  display: block; background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 22px; height: 100%;
  transition: box-shadow .15s ease, transform .1s ease;
}
.cat-tile:hover { box-shadow: var(--shadow); transform: translateY(-2px); text-decoration: none; }
.cat-tile__icon {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--color-main-soft); margin-bottom: 14px; font-size: 22px;
}
.cat-tile h3 { margin: 0 0 6px; font-size: 18px; color: var(--color-text); }
.cat-tile p { margin: 0; color: var(--color-muted); font-size: 14px; }

/* --- section heading --- */
.section-head { margin-bottom: 26px; display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.section-head h2 { font-size: 26px; margin: 0 0 6px; }
.section-head p { margin: 0; color: var(--color-muted); font-size: 15px; }
.section-head a { font-weight: 700; font-size: 14px; white-space: nowrap; }

/* --- info / principle blocks --- */
.principle { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 20px; }
.principle h3 { margin: 0 0 8px; font-size: 16px; color: var(--color-main); }
.principle p { margin: 0; color: var(--color-muted); font-size: 14px; }

/* owner mini box */
.owner-box {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 24px; display: flex; gap: 18px; align-items: flex-start;
}
.owner-box__avatar {
  width: 56px; height: 56px; border-radius: 50%; background: var(--color-sub);
  color: #fff; display: grid; place-items: center; font-size: 22px; font-weight: 700; flex: none;
}
.owner-box__body h3 { margin: 0 0 4px; font-size: 17px; }
.owner-box__body .role { color: var(--color-sub); font-size: 13px; font-weight: 700; margin: 0 0 8px; }
.owner-box__body p { margin: 0 0 10px; color: var(--color-muted); font-size: 14px; }

/* callout / note */
.callout {
  border-left: 4px solid var(--color-sub); background: var(--color-sub-soft);
  padding: 14px 18px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 22px 0; font-size: 15px;
}
.callout strong { color: var(--color-text); }

/* --- breadcrumb --- */
.breadcrumb { font-size: 13px; color: var(--color-muted); padding: 18px 0 0; }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; padding: 0; margin: 0; }
.breadcrumb li::after { content: "›"; margin-left: 6px; color: var(--color-border); }
.breadcrumb li:last-child::after { content: ""; }
.breadcrumb a { color: var(--color-muted); }

/* --- article --- */
.article { max-width: var(--maxw-read); margin: 0 auto; }
.article__header { padding: 8px 0 24px; border-bottom: 1px solid var(--color-border); margin-bottom: 28px; }
.article__cat { font-size: 13px; font-weight: 700; color: var(--color-sub); }
.article h1 { font-size: 33px; margin: 10px 0 12px; letter-spacing: -0.5px; }
.article__subtitle { font-size: 18px; color: var(--color-muted); margin: 0 0 18px; }
.article__meta { font-size: 14px; color: var(--color-muted); display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; }
.article__meta a { color: var(--color-main); font-weight: 600; }
.article__body { font-size: 17px; }
.article__body h2 { font-size: 23px; margin: 38px 0 12px; padding-top: 6px; }
.article__body h3 { font-size: 19px; margin: 26px 0 10px; }
.article__body p { margin: 0 0 16px; }
.article__body ul, .article__body ol { margin: 0 0 16px; }
.article__body li { margin-bottom: 6px; }

/* table of contents */
.toc {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 18px 22px; margin: 0 0 30px;
}
.toc strong { display: block; font-size: 14px; margin-bottom: 10px; color: var(--color-main); }
.toc ol { margin: 0; padding-left: 1.2em; }
.toc a { color: var(--color-text); font-size: 15px; }

/* summary / mistakes / checklist boxes */
.infobox { border-radius: var(--radius); padding: 22px; margin: 28px 0; border: 1px solid var(--color-border); }
.infobox h3 { margin: 0 0 12px; font-size: 17px; display: flex; align-items: center; gap: 8px; }
.infobox ul { margin: 0; }
.infobox--key { background: var(--color-sub-soft); border-color: transparent; }
.infobox--key h3 { color: var(--color-sub); }
.infobox--warn { background: #FDF3EC; border-color: #F3DECB; }
.infobox--warn h3 { color: #B5651D; }
.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li { position: relative; padding-left: 30px; margin-bottom: 10px; }
.checklist li::before {
  content: "✓"; position: absolute; left: 0; top: 0; color: var(--color-sub);
  font-weight: 800; background: var(--color-sub-soft); width: 22px; height: 22px;
  border-radius: 6px; display: grid; place-items: center; font-size: 13px;
}

/* FAQ */
.faq { margin: 30px 0; }
.faq details {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); padding: 4px 18px; margin-bottom: 10px;
}
.faq summary { cursor: pointer; font-weight: 700; padding: 12px 0; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--color-muted); font-weight: 400; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 14px; color: var(--color-muted); }

/* related posts */
.related { margin-top: 44px; padding-top: 30px; border-top: 1px solid var(--color-border); }
.related h2 { font-size: 20px; margin: 0 0 18px; }

/* post hero image */
.article__hero {
  width: 100%; aspect-ratio: 16/7; object-fit: cover;
  border-radius: var(--radius); margin-bottom: 24px; display: block;
}

/* card thumbnail */
.card__thumb {
  width: 100%; aspect-ratio: 16/9; object-fit: cover;
  border-radius: var(--radius) var(--radius) 0 0; display: block; margin-bottom: 14px;
}

/* experience box */
.experience-box {
  margin: 36px 0; background: #FFFBF5; border: 1px solid #E8D5B7;
  border-left: 4px solid var(--color-main); border-radius: var(--radius); padding: 22px 24px;
}
.experience-box__label {
  font-size: 13px; font-weight: 700; color: var(--color-main); letter-spacing: .03em;
  text-transform: uppercase; margin-bottom: 10px;
}
.experience-box__body { font-size: 15.5px; line-height: 1.8; color: var(--color-text); }
.experience-box__body p { margin: 0; }

/* author/editor box at article bottom */
.editor-box {
  margin-top: 40px; background: var(--color-main-soft); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 24px; display: flex; gap: 18px; align-items: flex-start;
}
.editor-box__avatar {
  width: 52px; height: 52px; border-radius: 50%; background: var(--color-main); color: #fff;
  display: grid; place-items: center; font-size: 20px; font-weight: 700; flex: none;
}
.editor-box__body h3 { margin: 0 0 4px; font-size: 16px; }
.editor-box__body h3 a { color: var(--color-main); }
.editor-box__body p { margin: 4px 0 0; font-size: 14px; color: var(--color-muted); }

/* column-specific accent */
.is-column .article__header { border-bottom-color: var(--color-sub); }
.column-tag {
  display: inline-block; font-size: 12px; font-weight: 800; color: #fff;
  background: var(--color-sub); padding: 4px 12px; border-radius: 999px; margin-bottom: 6px;
}
.card--column { border-left: 3px solid var(--color-sub); }
.card--column .card__cat { color: var(--color-sub); }

/* page intro (about, legal, etc.) */
.page-header { padding: 40px 0 8px; }
.page-header h1 { font-size: 32px; margin: 8px 0 10px; }
.page-header p { color: var(--color-muted); font-size: 17px; margin: 0; max-width: var(--maxw-read); }
.prose { max-width: var(--maxw-read); }
.prose h2 { font-size: 22px; margin: 34px 0 12px; }
.prose h3 { font-size: 18px; margin: 24px 0 8px; }
.prose p { margin: 0 0 16px; }
.prose ul, .prose ol { margin: 0 0 16px; }

/* forms (contact, admin) */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 14px; font-weight: 700; margin-bottom: 6px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 11px 13px; border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); font-family: inherit; font-size: 15px;
  background: var(--color-surface); color: var(--color-text);
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: 2px solid var(--color-sub); outline-offset: 1px; border-color: var(--color-sub);
}
.field__hint { font-size: 12px; color: var(--color-muted); margin-top: 6px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* --- footer --- */
.site-footer {
  background: #2B2420; color: #E9E0D6; margin-top: 64px; padding: 48px 0 28px;
}
.site-footer a { color: #E9E0D6; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
.footer-brand .brand__mark { background: var(--color-sub); }
.footer-brand p { color: #B7ABA0; font-size: 14px; margin: 14px 0 0; max-width: 320px; }
.footer-col h4 { font-size: 14px; margin: 0 0 12px; color: #fff; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 8px; font-size: 14px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12); padding-top: 20px;
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font-size: 13px; color: #B7ABA0;
}
.footer-bottom a { font-weight: 600; }

/* --- 404 --- */
.error-page { text-align: center; padding: 90px 0; }
.error-page .code { font-size: 72px; font-weight: 800; color: var(--color-main); margin: 0; }
.error-page h1 { font-size: 26px; margin: 8px 0 12px; }
.error-page p { color: var(--color-muted); margin: 0 0 24px; }

/* sitemap page list */
.sitemap-group { margin-bottom: 30px; }
.sitemap-group h2 { font-size: 19px; margin: 0 0 12px; }
.sitemap-group ul { columns: 2; column-gap: 30px; }
@media (max-width: 640px) { .sitemap-group ul { columns: 1; } }

/* tag chips */
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 0; }
.tag { font-size: 12px; color: var(--color-muted); background: var(--color-main-soft); padding: 5px 12px; border-radius: 999px; }

/* responsive */
@media (max-width: 900px) {
  .hero__layout { grid-template-columns: 1fr; gap: 24px; padding: 44px 0 38px; }
  .hero__media { aspect-ratio: 16 / 9; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 680px) {
  body { font-size: 16px; }
  .hero h1 { font-size: 30px; }
  .hero__layout { padding: 36px 0 32px; }
  .section { padding: 40px 0; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .main-nav {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--color-surface); border-bottom: 1px solid var(--color-border);
    padding: 8px 16px 16px;
  }
  .main-nav.is-open { display: flex; }
  .main-nav a { padding: 12px 8px; border-radius: 0; border-bottom: 1px solid var(--color-border); }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .article h1 { font-size: 27px; }
  .owner-box, .editor-box, .footer-bottom { flex-direction: column; }
}

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}