/* ==========================================================================
   축제노트 — 정보 사이트 디자인 시스템
   컨셉: "축제 정보 카드 카탈로그" — 색인 카드처럼 카테고리 탭 + 아카이브 번호를
   가진 카드로 콘텐츠를 정리한다. 블로그가 아니라 참고 자료 저장소처럼 보이도록.
   ========================================================================== */

:root {
  --paper: #FBF7EF;
  --paper-dim: #F3EDE0;
  --ink: #211D1B;
  --ink-soft: #5C554C;
  --line: #DDD3C2;
  --lantern: #E4572E;   /* main */
  --lantern-dim: #FBE4DB;
  --moss: #45624B;      /* sub */
  --moss-dim: #E3EAE1;
  --gold: #C9A227;
  --gold-dim: #F6ECC9;
  --radius: 2px;
  --max-w: 1080px;
  --content-w: 700px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Noto Sans KR', -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.mono { font-family: 'IBM Plex Mono', monospace; letter-spacing: 0.02em; }
.wrap { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* -------------------- header / nav -------------------- */

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky; top: 0; z-index: 40;
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; font-family: 'Noto Serif KR', serif; font-weight: 900; font-size: 21px; letter-spacing: -0.01em; }
.logo .mark { width: 20px; height: 20px; background: var(--lantern); border-radius: 3px; position: relative; flex-shrink: 0; }
.logo .mark::after { content: ""; position: absolute; inset: 5px; border: 2px solid var(--paper); border-radius: 1px; }

nav.main-nav { display: flex; gap: 24px; font-size: 14px; font-weight: 500; flex-wrap: wrap; }
nav.main-nav a { color: var(--ink-soft); padding: 4px 0; border-bottom: 2px solid transparent; }
nav.main-nav a:hover, nav.main-nav a.active { color: var(--ink); border-bottom-color: var(--lantern); }

.breadcrumb { font-size: 12.5px; color: var(--ink-soft); padding: 16px 0 0; }
.breadcrumb a:hover { color: var(--ink); text-decoration: underline; }
.breadcrumb .sep { margin: 0 6px; opacity: 0.5; }

/* -------------------- hero -------------------- */

.hero { padding: 48px 0 36px; border-bottom: 1px solid var(--line); }
.hero .eyebrow { font-family: 'IBM Plex Mono', monospace; font-size: 13px; color: var(--lantern); font-weight: 600; letter-spacing: 0.04em; margin-bottom: 14px; }
.hero h1 { font-family: 'Noto Serif KR', serif; font-weight: 900; font-size: 36px; line-height: 1.3; margin: 0 0 14px; letter-spacing: -0.01em; }
.hero p.lede { color: var(--ink-soft); font-size: 16px; max-width: 600px; margin: 0; }

/* purpose strip under hero (운영 목적 요약) */
.purpose-strip { display: flex; gap: 28px; margin-top: 28px; flex-wrap: wrap; }
.purpose-strip .p-item { max-width: 220px; }
.purpose-strip .p-item .k { font-family: 'IBM Plex Mono', monospace; font-size: 11.5px; color: var(--moss); font-weight: 700; margin-bottom: 4px; }
.purpose-strip .p-item .v { font-size: 13.5px; color: var(--ink-soft); line-height: 1.55; }

/* -------------------- section -------------------- */

.section { padding: 44px 0; border-bottom: 1px solid var(--line); }
.section-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 22px; gap: 16px; }
.section-head h2 { font-family: 'Noto Serif KR', serif; font-size: 22px; font-weight: 800; margin: 0; }
.section-head .see-all { font-size: 13px; color: var(--ink-soft); font-weight: 600; border-bottom: 1px solid var(--line); flex-shrink: 0; white-space: nowrap; }
.section-head .see-all:hover { border-color: var(--ink); color: var(--ink); }

/* -------------------- category tab row -------------------- */

.category-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.category-tile {
  border: 1px solid var(--line); padding: 18px 14px; border-radius: var(--radius);
  display: flex; flex-direction: column; gap: 6px;
}
.category-tile:hover { border-color: var(--moss); }
.category-tile .tab-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--lantern); }
.category-tile h3 { font-size: 14.5px; font-weight: 700; margin: 0; }
.category-tile .count { font-family: 'IBM Plex Mono', monospace; font-size: 11.5px; color: var(--ink-soft); opacity: 0.7; }

/* -------------------- card catalog (signature element) -------------------- */

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card-grid.two-col { grid-template-columns: repeat(2, 1fr); }

.info-card-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  display: flex; flex-direction: column; gap: 10px;
  position: relative;
  background: var(--paper);
}
.info-card-item:hover { border-color: var(--ink); }

/* folded corner tab, color-coded by category */
.info-card-item::before {
  content: "";
  position: absolute; top: 0; left: 0;
  width: 30px; height: 8px;
  background: var(--tab-color, var(--lantern));
  border-radius: 0 0 3px 0;
}

.info-card-item .archive-no { font-family: 'IBM Plex Mono', monospace; font-size: 11px; color: var(--ink-soft); opacity: 0.6; margin-top: 6px; }
.info-card-item .cat-label { font-family: 'IBM Plex Mono', monospace; font-size: 11px; font-weight: 700; color: var(--tab-color, var(--lantern)); }
.info-card-item h3 { font-family: 'Noto Serif KR', serif; font-size: 16.5px; font-weight: 700; margin: 0; line-height: 1.4; }
.info-card-item .desc { font-size: 13px; color: var(--ink-soft); overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.info-card-item .meta-row { margin-top: auto; display: flex; justify-content: space-between; font-size: 11.5px; color: var(--ink-soft); opacity: 0.75; }

/* -------------------- editor / principles box -------------------- */

.principles-box { border: 1px solid var(--line); background: var(--paper-dim); padding: 26px; border-radius: var(--radius); }
.principles-box h2 { font-family: 'Noto Serif KR', serif; font-size: 20px; margin: 0 0 14px; }
.principles-box ul { margin: 0; padding-left: 20px; color: var(--ink-soft); font-size: 14px; }
.principles-box li { margin-bottom: 8px; }

/* -------------------- owner mini box -------------------- */

.owner-box { display: flex; gap: 16px; align-items: flex-start; border: 1px solid var(--line); padding: 20px; border-radius: var(--radius); }
.owner-box .avatar { width: 52px; height: 52px; border-radius: 50%; background: var(--moss); flex-shrink: 0; display: flex; align-items: center; justify-content: center; color: var(--paper); font-family: 'Noto Serif KR', serif; font-weight: 900; font-size: 18px; }
.owner-box .name-link { font-weight: 800; font-size: 15px; border-bottom: 1px solid var(--line); }
.owner-box .name-link:hover { border-color: var(--lantern); color: var(--lantern); }
.owner-box p { margin: 6px 0 0; font-size: 13.5px; color: var(--ink-soft); }

/* -------------------- CTA -------------------- */

.cta-box { border: 1px solid var(--ink); padding: 28px; text-align: center; border-radius: var(--radius); }
.cta-box h2 { font-family: 'Noto Serif KR', serif; font-size: 20px; margin: 0 0 8px; }
.cta-box p { color: var(--ink-soft); font-size: 14px; margin: 0 0 18px; }
.cta-box .btn { display: inline-block; background: var(--ink); color: var(--paper); padding: 12px 26px; font-weight: 700; font-size: 14px; border-radius: var(--radius); }
.cta-box .btn:hover { background: var(--lantern); }

/* -------------------- generic content page -------------------- */

.page-head { padding: 40px 0 26px; border-bottom: 1px solid var(--line); }
.page-head .eyebrow { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--lantern); font-weight: 600; margin-bottom: 10px; }
.page-head h1 { font-family: 'Noto Serif KR', serif; font-size: 30px; font-weight: 900; margin: 0; }
.page-head .subtitle { color: var(--ink-soft); font-size: 15px; margin-top: 10px; max-width: 600px; }
.page-head .post-meta { display: flex; gap: 18px; margin-top: 16px; font-size: 12.5px; color: var(--ink-soft); flex-wrap: wrap; }
.page-head .post-meta span { font-family: 'IBM Plex Mono', monospace; }

.category-desc { padding: 18px 0 8px; color: var(--ink-soft); font-size: 14.5px; max-width: 640px; }

.prose { padding: 36px 0; max-width: var(--content-w); }
.prose h2 { font-family: 'Noto Serif KR', serif; font-size: 19px; font-weight: 800; margin: 30px 0 12px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 15.5px; font-weight: 700; margin: 20px 0 8px; }
.prose p { margin: 0 0 14px; color: var(--ink-soft); }
.prose ul, .prose ol { color: var(--ink-soft); padding-left: 20px; }
.prose li { margin-bottom: 7px; }
.prose strong { color: var(--ink); }

.toc { border: 1px solid var(--line); background: var(--paper-dim); padding: 18px 20px; margin: 0 0 28px; border-radius: var(--radius); max-width: var(--content-w); }
.toc .toc-label { font-family: 'IBM Plex Mono', monospace; font-size: 11.5px; color: var(--ink-soft); font-weight: 700; margin-bottom: 8px; }
.toc ol { margin: 0; padding-left: 18px; font-size: 13.5px; }
.toc li { margin-bottom: 4px; }
.toc a:hover { color: var(--lantern); }

.summary-box { border-left: 3px solid var(--lantern); background: var(--lantern-dim); padding: 16px 18px; margin: 22px 0; font-size: 14px; }
.summary-box .label { font-family: 'IBM Plex Mono', monospace; font-size: 11px; font-weight: 700; color: var(--lantern); margin-bottom: 6px; }

.checklist-box { border: 1px solid var(--line); padding: 18px 20px; margin: 22px 0; background: var(--paper); }
.checklist-box .label { font-family: 'IBM Plex Mono', monospace; font-size: 11px; font-weight: 700; color: var(--moss); margin-bottom: 10px; }
.checklist-box ul { list-style: none; padding: 0; margin: 0; }
.checklist-box li { padding-left: 22px; position: relative; margin-bottom: 9px; font-size: 13.5px; color: var(--ink-soft); }
.checklist-box li::before { content: "☐"; position: absolute; left: 0; color: var(--moss); }

.mistake-box { border-left: 3px solid var(--gold); background: var(--gold-dim); padding: 16px 18px; margin: 22px 0; font-size: 14px; }
.mistake-box .label { font-family: 'IBM Plex Mono', monospace; font-size: 11px; font-weight: 700; color: #8A6D1A; margin-bottom: 6px; }

.faq-item { border-bottom: 1px solid var(--line); padding: 16px 0; }
.faq-item:last-child { border-bottom: none; }
.faq-item .q { font-weight: 700; margin-bottom: 6px; }
.faq-item .a { color: var(--ink-soft); font-size: 14px; }

.editor-box { display: flex; gap: 14px; align-items: flex-start; border: 1px solid var(--line); padding: 18px; margin: 30px 0 0; max-width: var(--content-w); }
.editor-box .avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--moss); flex-shrink: 0; display: flex; align-items: center; justify-content: center; color: var(--paper); font-family: 'Noto Serif KR', serif; font-weight: 900; font-size: 15px; }
.editor-box .name-link { font-weight: 800; font-size: 14px; border-bottom: 1px solid var(--line); }
.editor-box .name-link:hover { border-color: var(--lantern); color: var(--lantern); }
.editor-box p { margin: 5px 0 0; font-size: 13px; color: var(--ink-soft); }

.related-list { display: flex; flex-direction: column; gap: 10px; max-width: var(--content-w); }
.related-list a { border: 1px solid var(--line); padding: 12px 16px; font-size: 13.5px; font-weight: 600; }
.related-list a:hover { border-color: var(--lantern); color: var(--lantern); }

.disclaimer-note { font-size: 12.5px; color: var(--ink-soft); opacity: 0.85; margin-top: 26px; max-width: var(--content-w); }

/* column-specific visual distinction */
.column-page .page-head { background: var(--moss-dim); border-bottom-color: var(--moss); }
.column-page .page-head .eyebrow { color: var(--moss); }
.column-tag { display: inline-block; font-family: 'IBM Plex Mono', monospace; font-size: 11px; font-weight: 700; color: var(--moss); background: var(--moss-dim); padding: 3px 10px; border-radius: 999px; margin-bottom: 10px; }

/* info card table (privacy/terms contact block) */
.info-card { border: 1px solid var(--line); padding: 20px; margin: 24px 0; background: var(--paper-dim); max-width: var(--content-w); }
.info-card dl { display: grid; grid-template-columns: 100px 1fr; gap: 8px 12px; margin: 0; font-size: 14px; }
.info-card dt { font-family: 'IBM Plex Mono', monospace; color: var(--ink-soft); font-size: 12.5px; }
.info-card dd { margin: 0; font-weight: 600; }

/* contact form */
.contact-form { display: flex; flex-direction: column; gap: 16px; max-width: 520px; margin-top: 24px; }
.contact-form label { font-size: 13px; font-weight: 600; color: var(--ink-soft); display: block; margin-bottom: 6px; }
.contact-form input, .contact-form textarea { width: 100%; border: 1px solid var(--line); background: var(--paper); padding: 11px 12px; font-family: inherit; font-size: 14px; color: var(--ink); border-radius: var(--radius); }
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--lantern); }
.contact-form button { align-self: flex-start; background: var(--ink); color: var(--paper); border: none; padding: 12px 26px; font-weight: 700; font-size: 14px; cursor: pointer; border-radius: var(--radius); }
.contact-form button:hover { background: var(--lantern); }
.form-note { font-size: 12.5px; color: var(--ink-soft); opacity: 0.85; margin-top: 10px; }

/* author/columns hub */
.author-session-banner { border: 1px dashed var(--line); padding: 16px 18px; margin: 24px 0; font-size: 13.5px; color: var(--ink-soft); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.author-session-banner.is-admin { border-color: var(--lantern); background: var(--lantern-dim); }
.btn-small { display: inline-block; background: var(--ink); color: var(--paper); padding: 9px 18px; font-size: 13px; font-weight: 700; border-radius: var(--radius); border: none; cursor: pointer; }
.btn-small:hover { background: var(--lantern); }
.btn-ghost { display: inline-block; border: 1px solid var(--line); padding: 8px 16px; font-size: 12.5px; font-weight: 600; border-radius: var(--radius); color: var(--ink-soft); background: none; cursor: pointer; }
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }

/* 404 */
.error-page { text-align: center; padding: 100px 0; }
.error-page .code { font-family: 'IBM Plex Mono', monospace; font-size: 14px; color: var(--lantern); font-weight: 700; letter-spacing: 0.1em; }
.error-page h1 { font-family: 'Noto Serif KR', serif; font-size: 30px; margin: 14px 0; }
.error-page p { color: var(--ink-soft); margin-bottom: 24px; }

/* html sitemap */
.sitemap-cols { columns: 3; column-gap: 32px; }
.sitemap-group { break-inside: avoid; margin-bottom: 24px; }
.sitemap-group h3 { font-size: 13.5px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-soft); margin: 0 0 10px; }
.sitemap-group ul { list-style: none; padding: 0; margin: 0; }
.sitemap-group li { margin-bottom: 8px; font-size: 14px; }
.sitemap-group a:hover { color: var(--lantern); }

/* -------------------- footer -------------------- */

.site-footer { padding: 40px 0 32px; background: var(--paper-dim); }
.site-footer .foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 28px; margin-bottom: 26px; }
.site-footer h4 { font-size: 12.5px; font-weight: 700; margin: 0 0 12px; color: var(--ink-soft); }
.site-footer .foot-links { display: flex; flex-direction: column; gap: 9px; font-size: 13.5px; }
.site-footer .foot-links a { color: var(--ink-soft); }
.site-footer .foot-links a:hover { color: var(--ink); }
.site-footer .about-text { font-size: 13px; color: var(--ink-soft); max-width: 300px; line-height: 1.7; }
.site-footer .bottom-bar { border-top: 1px solid var(--line); padding-top: 16px; display: flex; justify-content: space-between; font-size: 12px; color: var(--ink-soft); opacity: 0.85; flex-wrap: wrap; gap: 8px; }

/* -------------------- a11y / motion -------------------- */

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 2px solid var(--lantern); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }

/* -------------------- responsive -------------------- */

@media (max-width: 900px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .category-row { grid-template-columns: repeat(3, 1fr); }
  .site-footer .foot-grid { grid-template-columns: 1fr 1fr; }
  .sitemap-cols { columns: 2; }
}
@media (max-width: 700px) {
  nav.main-nav { display: none; }
  .hero h1 { font-size: 26px; }
  .card-grid, .card-grid.two-col { grid-template-columns: 1fr; }
  .category-row { grid-template-columns: repeat(2, 1fr); }
  .site-footer .foot-grid { grid-template-columns: 1fr; }
  .sitemap-cols { columns: 1; }
  .info-card dl { grid-template-columns: 80px 1fr; }
}