/* MOON_GAMES — 사이트 공통 스타일(허브 · 소개 · 문의)
 * 통합 전 8개 게임이 공유하던 극단 미니멀 모노크롬을 사이트 기준으로 승격했다.
 * §6 준수: 평면 솔리드 · 무채 계조 · 1px 헤어라인. 그라디언트/글래스/글로우/다색 없음. */

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'tnum' 1, 'cv05' 1;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.25; font-weight: 500; letter-spacing: -0.01em; }

.sr-only, .sr-title {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 20px; }
main { padding: 26px 0 56px; }

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  position: sticky; top: 0; z-index: 20;
}
.header-in { display: flex; align-items: center; gap: 16px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: -0.02em; color: var(--ink); font-size: 17px; white-space: nowrap; }
.brand .mark { width: 22px; height: 22px; border: 1px solid var(--accent); border-radius: 3px; display: grid; place-items: center; font-size: 11px; font-weight: 500; color: var(--accent-ink); }
.brand .brand-name { font-size: 15px; font-weight: 600; }
.header-nav { display: flex; gap: 4px; margin-left: 8px; }
.header-nav a { color: var(--ink-2); padding: 7px 9px; border-radius: 6px; display: inline-flex; align-items: center; font-size: 14px; }
.header-nav a:hover { color: var(--ink); background: var(--surface-2); text-decoration: none; }
.header-tools { margin-left: auto; display: flex; align-items: center; gap: 6px; }
.icon-btn {
  appearance: none; border: 1px solid var(--line); background: var(--surface-2); color: var(--ink-2);
  height: 34px; min-width: 34px; padding: 0 10px; border-radius: 7px; font: inherit; font-size: 13px; font-weight: 500;
  cursor: pointer; display: inline-flex; align-items: center; gap: 6px;
}
.icon-btn:hover { color: var(--ink); border-color: var(--line-strong); }
.lang-select, .game-select {
  appearance: none; border: 1px solid var(--line); background: var(--surface-2); color: var(--ink-2);
  height: 34px; padding: 0 24px 0 9px; border-radius: 7px; font: inherit; font-size: 16px; font-weight: 500; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239AA1AD' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 8px center;
}
.game-select { font-size: 14px; max-width: 190px; color: var(--ink); }

/* ---------- 허브 ---------- */
.hub-head { padding: 30px 0 6px; }
.hub-head h1 { font-size: clamp(28px, 5vw, 40px); margin: 0 0 10px; letter-spacing: -0.03em; }
.hub-head .lead { color: var(--ink-2); font-size: 17px; margin: 0; max-width: 640px; }

.game-grid {
  display: grid; gap: 14px; margin: 26px 0 10px;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}
.game-card {
  display: flex; flex-direction: column; gap: 8px;
  border: 1px solid var(--line); border-radius: 10px; padding: 20px;
  background: var(--surface); color: var(--ink);
}
.game-card:hover { border-color: var(--accent-line); text-decoration: none; }
.game-card .gc-mark {
  width: 34px; height: 34px; border: 1px solid var(--line-strong); border-radius: 4px;
  display: grid; place-items: center; font-size: 15px; font-weight: 500; color: var(--ink);
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}
.game-card h2 { margin: 6px 0 0; font-size: 17px; font-weight: 600; }
.game-card .gc-tag { font-size: 12px; color: var(--ink-3); }
.game-card p { margin: 0; color: var(--ink-2); font-size: 13px; line-height: 1.55; }

/* ---------- 문서(소개·문의) ---------- */
.doc { max-width: 760px; margin: 0 auto; }
.doc h1 { font-size: 30px; margin: 8px 0 6px; letter-spacing: -0.02em; }
.doc .lead { color: var(--ink-2); font-size: 17px; margin: 0 0 26px; }
.doc h2 { font-size: 20px; margin: 34px 0 12px; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.doc h3 { font-size: 16px; margin: 22px 0 8px; }
.doc p { color: var(--ink); margin: 0 0 14px; }
.doc ul, .doc ol { color: var(--ink); margin: 0 0 16px; padding-left: 22px; }
.doc li { margin: 5px 0; }
.breadcrumb { font-size: 13px; color: var(--ink-3); margin-bottom: 14px; }
.breadcrumb a { color: var(--ink-2); }

.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; margin: 20px 0; }
.card { display: block; border: 1px solid var(--line); border-radius: 10px; padding: 16px; background: var(--surface); color: var(--ink); }
.card:hover { border-color: var(--accent-line); text-decoration: none; }
.card .tag { display: inline-block; font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.04em; color: var(--accent-ink); margin-bottom: 6px; }
.card h3 { margin: 0 0 4px; font-size: 15px; }
.card p { margin: 0; color: var(--ink-2); font-size: 13px; }

.faq { margin: 20px 0; }
.faq details { border: 1px solid var(--line); border-radius: 9px; margin-bottom: 8px; background: var(--surface); }
.faq summary { padding: 13px 16px; font-weight: 500; cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq details[open] summary { border-bottom: 1px solid var(--line); }
.faq .a { padding: 12px 16px; color: var(--ink-2); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); margin-top: 50px; }
.footer-in { padding: 30px 0; display: grid; gap: 18px; }
.footer-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 22px; }
.footer-cols h4 { margin: 0 0 10px; font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-3); }
.footer-cols a { display: block; color: var(--ink-2); font-size: 13px; padding: 3px 0; }
.footer-cols a:hover { color: var(--ink); text-decoration: none; }
.copyright { color: var(--ink-3); font-size: 12px; border-top: 1px solid var(--line); padding-top: 16px; }

@media (max-width: 600px) {
  .header-nav { display: none; }
  .header-in { gap: 10px; height: 54px; }
  .game-select { max-width: 150px; }
}

.center { text-align: center; }
.muted { color: var(--ink-2); font-size: 13px; }