/* RoyaltyFreeHub — "catalogue" look: white paper, ink type, one royal-blue accent,
   mono figures for anything that is data (catalogue numbers, sizes, counts). */
:root {
  --bg: #ffffff;
  --panel: #f3f4f6;
  --panel-2: #e9ebef;
  --ink: #0d0f14;
  --ink-2: #3b404b;
  --muted: #6b7180;
  --line: #e2e4e9;
  --accent: #1f3fe0;
  --accent-hover: #1631bd;
  --accent-tint: #eef1ff;
  --on-accent: #ffffff;
  --danger: #c0262d;
  --r: 10px;
  --sans: "Pretendard Variable", Pretendard, -apple-system, "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0d10;
    --panel: #15171c;
    --panel-2: #1c1f26;
    --ink: #f1f2f5;
    --ink-2: #c4c8d2;
    --muted: #8a909e;
    --line: #262a33;
    --accent: #7d93ff;
    --accent-hover: #9aabff;
    --accent-tint: #171d38;
    --on-accent: #0b1030;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--sans); background: var(--bg); color: var(--ink);
  font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
html[lang="ko"] body { word-break: keep-all; overflow-wrap: anywhere; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
.mono { font-family: var(--mono); font-feature-settings: "zero" 0; letter-spacing: 0; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.center { text-align: center; }
[hidden] { display: none !important; }
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.wrap.narrow { max-width: 760px; }
.block { margin-top: 56px; }
.link { color: var(--accent); }
.link:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--bg); padding: 8px 12px; z-index: 99; }
.skip:focus { left: 8px; }

/* ---------- header ---------- */
.site-header { position: sticky; top: 0; z-index: 30; background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--line); }
.header-row { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; letter-spacing: -0.02em; white-space: nowrap; }
.brand .mark {
  display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 7px;
  background: var(--accent); color: var(--on-accent); font-size: 15px; font-weight: 800; letter-spacing: 0;
}
.brand b { font-weight: 700; color: var(--accent); }
.header-search { position: relative; flex: 1; max-width: 440px; }
.header-search svg { position: absolute; left: 12px; top: 50%; width: 16px; height: 16px; transform: translateY(-50%); fill: none; stroke: var(--muted); stroke-width: 1.8; stroke-linecap: round; }
.header-search input {
  width: 100%; height: 40px; font: inherit; font-size: 14px; color: var(--ink); background: var(--panel);
  border: 1px solid transparent; border-radius: 8px; padding: 0 12px 0 36px; outline: none; transition: border-color .15s, background .15s;
}
.header-search input:focus { border-color: var(--accent); background: var(--bg); }
.home .header-search { visibility: hidden; }
.nav { display: flex; align-items: center; gap: 22px; margin-left: auto; font-size: 15px; font-weight: 500; }
.nav a { color: var(--ink-2); }
.nav a:hover { color: var(--ink); }
.nav .lang { font-family: var(--mono); font-size: 13px; border: 1px solid var(--line); border-radius: 6px; padding: 3px 8px; color: var(--muted); }
.nav .lang:hover { border-color: var(--ink-2); color: var(--ink); }

/* ---------- buttons & search ---------- */
button, .btn-download {
  font: inherit; font-weight: 600; border: 0; border-radius: 8px; cursor: pointer;
  background: var(--accent); color: var(--on-accent); padding: 0 20px; height: 44px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; white-space: nowrap; transition: background .15s;
}
button:hover, .btn-download:hover { background: var(--accent-hover); }
button:disabled { opacity: .55; cursor: progress; }
.search.big {
  position: relative; display: flex; align-items: center; gap: 8px; max-width: 640px;
  background: var(--bg); border: 1.5px solid var(--ink); border-radius: 12px; padding: 6px 6px 6px 46px;
}
.search.big:focus-within { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-tint); }
.search.big svg { position: absolute; left: 16px; width: 20px; height: 20px; fill: none; stroke: var(--ink-2); stroke-width: 1.8; stroke-linecap: round; }
.search.big input { flex: 1; min-width: 0; height: 44px; border: 0; background: transparent; color: var(--ink); font: inherit; font-size: 17px; outline: none; }
.search.big input::placeholder { color: var(--muted); }

/* ---------- home hero ---------- */
.hero { padding: 72px 0 8px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 56px; align-items: center; }
.hero-grid.solo { grid-template-columns: minmax(0, 760px); }
.hero h1 { font-size: clamp(34px, 5.2vw, 60px); line-height: 1.08; letter-spacing: -0.035em; font-weight: 800; margin: 0 0 18px; max-width: 14ch; }
html[lang="ko"] .hero h1 { letter-spacing: -0.04em; line-height: 1.18; max-width: 12em; }
.sub { color: var(--ink-2); font-size: 18px; margin: 0 0 28px; max-width: 34em; }
.stats { margin: 16px 0 0; font-size: 14px; color: var(--muted); font-variant-numeric: tabular-nums; }
.sheet { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.sheet a { position: relative; display: block; border-radius: 8px; overflow: hidden; background: var(--panel); animation: rise .6s cubic-bezier(.2,.7,.2,1) both; animation-delay: calc(var(--i) * 60ms); }
.sheet a:nth-child(2), .sheet a:nth-child(5) { transform: translateY(18px); }
.sheet img { display: block; width: 100%; height: auto; aspect-ratio: 1; object-fit: cover; }
.sheet span { position: absolute; left: 8px; bottom: 8px; font-size: 10.5px; color: #fff; background: rgba(0,0,0,.55); padding: 2px 6px; border-radius: 4px; }

/* ---------- category index ---------- */
.section-head { display: flex; align-items: baseline; gap: 16px; margin: 0 0 18px; }
.section-head h2 { font-size: 22px; font-weight: 700; letter-spacing: -0.02em; margin: 0; }
.section-head .more { margin-left: auto; font-size: 15px; font-weight: 600; color: var(--accent); }
.cat-index { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); border-top: 1px solid var(--line); }
.cat-index li { border-bottom: 1px solid var(--line); }
.cat-index a { display: grid; grid-template-columns: 36px 1fr auto; align-items: baseline; gap: 8px; padding: 14px 16px 14px 0; transition: color .15s; }
.cat-index .num { font-size: 12px; color: var(--muted); }
.cat-index .name { font-weight: 600; font-size: 16px; }
.cat-index .count { font-size: 13px; color: var(--muted); }
.cat-index a:hover .name { color: var(--accent); }

/* ---------- grid ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 28px 18px; }
.card { display: block; animation: rise .5s cubic-bezier(.2,.7,.2,1) both; animation-delay: calc(var(--i, 0) * 40ms); }
.thumb { display: block; border-radius: 8px; overflow: hidden; background: var(--panel); }
.thumb img { display: block; width: 100%; height: auto; aspect-ratio: 1; object-fit: cover; transition: transform .35s cubic-bezier(.2,.7,.2,1); }
.card:hover .thumb img { transform: scale(1.035); }
.cap { display: flex; align-items: baseline; gap: 10px; margin-top: 10px; }
.cap-title { flex: 1; min-width: 0; font-size: 15px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cap-meta { font-size: 11.5px; color: var(--muted); }
.card:hover .cap-title { color: var(--accent); }
.grid-ad { grid-column: 1 / -1; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .card, .sheet a { animation: none; } .thumb img { transition: none; } }

/* ---------- list & search pages ---------- */
.page-head { padding-top: 40px; }
.page-head h1 { font-size: clamp(28px, 4vw, 40px); font-weight: 800; letter-spacing: -0.03em; margin: 0 0 8px; }
.page-head .sub { font-size: 17px; margin-bottom: 20px; }
.page-head .search.big { margin: 0 0 24px; max-width: 760px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { display: inline-block; font-size: 14px; font-weight: 500; color: var(--ink-2); background: var(--panel); padding: 6px 12px; border-radius: 6px; transition: background .15s, color .15s; }
.chip:hover { background: var(--panel-2); color: var(--ink); }
.chip.active { background: var(--ink); color: var(--bg); }
.sortbar { display: flex; align-items: baseline; gap: 14px; margin: 28px 0 22px; padding-bottom: 14px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.sortbar .muted { font-family: var(--mono); font-size: 13px; }
.h-results { font-size: 22px; font-weight: 700; letter-spacing: -0.02em; margin: 0; }
.sorts { margin-left: auto; display: flex; gap: 4px; }
.sorts a { font-size: 14px; color: var(--muted); padding: 4px 10px; border-radius: 6px; }
.sorts a.on { background: var(--panel); color: var(--ink); font-weight: 600; }
.empty { text-align: center; color: var(--muted); padding: 56px 0; border: 1px dashed var(--line); border-radius: var(--r); }
.notice { background: var(--panel); border-radius: var(--r); padding: 14px 18px; }

/* ---------- generate panel ---------- */
.gen {
  display: flex; justify-content: space-between; align-items: center; gap: 24px;
  border: 1px solid var(--line); border-radius: var(--r); padding: 20px 22px; margin: 0 0 28px; background: var(--bg);
}
.gen.prominent { border-color: var(--accent); background: var(--accent-tint); }
.gen strong { font-size: 17px; }
.gen p { margin: 4px 0 0; color: var(--ink-2); font-size: 15px; }
.gen .gen-status { color: var(--accent); font-weight: 600; }
.gen .gen-status:empty { display: none; }

/* ---------- detail ---------- */
.detail { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(300px, 1fr); gap: 48px; padding-top: 36px; align-items: start; }
.detail-media { background: var(--panel); border-radius: 12px; padding: clamp(12px, 3vw, 36px); }
.detail-media img { display: block; width: 100%; height: auto; border-radius: 4px; box-shadow: 0 1px 2px rgba(0,0,0,.08), 0 12px 32px rgba(0,0,0,.12); }
.detail-side { position: sticky; top: 88px; }
.catno { margin: 0 0 10px; font-size: 12px; color: var(--muted); }
.catno span { margin-right: 6px; }
.detail-side h1 { font-size: 30px; line-height: 1.2; letter-spacing: -0.03em; font-weight: 800; margin: 0 0 12px; }
.desc { color: var(--ink-2); margin: 0 0 24px; }
.btn-download { width: 100%; height: 56px; font-size: 17px; border-radius: 10px; }
.btn-download svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.btn-meta { font-size: 12px; font-weight: 400; opacity: .8; margin-left: 4px; }
.checks { list-style: none; padding: 0; margin: 18px 0 6px; display: grid; gap: 6px; font-size: 15px; }
.checks li { display: flex; align-items: center; gap: 10px; }
.checks li::before { content: ""; width: 18px; height: 18px; flex: none; border-radius: 50%; background: var(--accent-tint) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5.5 10.5l3 3 6-7' fill='none' stroke='%231f3fe0' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/14px no-repeat; }
.meta { display: grid; grid-template-columns: auto 1fr; gap: 8px 20px; font-size: 14px; margin: 24px 0; padding: 18px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.meta dt { color: var(--muted); }
.meta dd { margin: 0; }
.meta dd.mono { font-size: 13px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tags .chip { font-size: 13px; padding: 4px 10px; }
.report { margin-top: 24px; font-size: 13px; color: var(--muted); }
.report summary { cursor: pointer; }
.report form { display: grid; gap: 6px; margin-top: 10px; }
.report button { justify-self: start; height: 34px; padding: 0 14px; font-size: 13px; }

/* ---------- ads ---------- */
.ad { margin: 40px 0; padding: 12px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); text-align: center; }
.ad-label { display: block; font-size: 10.5px; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 6px; }

/* ---------- pager ---------- */
.pager { display: flex; justify-content: space-between; align-items: center; margin: 40px 0 0; padding-top: 18px; border-top: 1px solid var(--line); }
.pager a { color: var(--accent); font-weight: 600; }
.pager-info { color: var(--muted); font-size: 13px; }

/* ---------- prose ---------- */
.prose { padding: 48px 24px 64px; font-size: 17px; }
.prose h1 { font-size: 36px; letter-spacing: -0.03em; font-weight: 800; margin: 0 0 8px; }
.prose h2 { font-size: 20px; letter-spacing: -0.01em; margin: 36px 0 10px; }
.prose li { margin: 6px 0; }
.prose a { color: var(--accent); }
.prose .muted { font-family: var(--mono); font-size: 13px; }

/* ---------- tags ---------- */
.pop-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; margin-top: 22px; }
.pop-tags .tags { display: contents; }
.page-head .crumb { margin: 0 0 10px; }

/* ---------- guides ---------- */
.guide-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 0; border-top: 1px solid var(--line); }
.wrap.narrow .guide-list { grid-template-columns: 1fr; }
.guide-card { display: grid; grid-template-columns: 36px 1fr; gap: 4px 8px; padding: 18px 16px 18px 0; border-bottom: 1px solid var(--line); }
.guide-card .num { grid-row: span 2; font-size: 12px; color: var(--muted); padding-top: 4px; }
.g-title { font-weight: 700; font-size: 17px; letter-spacing: -0.01em; }
.g-desc { color: var(--ink-2); font-size: 15px; }
.guide-card:hover .g-title { color: var(--accent); }
.guide .crumb { margin: 0 0 12px; font-size: 14px; }
.guide .byline { margin: 0 0 20px; }
.guide .lede { font-size: 19px; color: var(--ink-2); margin: 0 0 28px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.guide h2 { font-size: 22px; margin-top: 40px; }
.guide p, .guide li { color: var(--ink); }
.guide code { font-family: var(--mono); font-size: .9em; background: var(--panel); padding: 1px 6px; border-radius: 4px; }
.guide blockquote { margin: 20px 0; padding: 4px 18px; border-left: 3px solid var(--accent); color: var(--ink-2); }
.guide ol, .guide ul { padding-left: 1.3em; }

/* ---------- footer ---------- */
.site-footer { margin-top: 96px; border-top: 1px solid var(--line); padding: 40px 0 28px; font-size: 15px; }
.footer-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px; }
.footer-grid p { margin: 10px 0 0; max-width: 34em; }
.footer-links { display: flex; flex-wrap: wrap; gap: 10px 22px; align-items: flex-start; }
.footer-links a { color: var(--ink-2); }
.footer-links a:hover { color: var(--accent); }
.copy { color: var(--muted); font-size: 12px; margin: 28px 0 0; }

/* ---------- toast ---------- */
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 8px; font-size: 14px; z-index: 50; max-width: calc(100vw - 32px); }

/* ---------- admin ---------- */
.admin main { padding: 28px 24px 64px; }
.admin h1 { letter-spacing: -0.02em; }
.stats-grid, .admin .stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin: 16px 0; }
.admin .stats div { background: var(--panel); border-radius: 10px; padding: 12px 14px; display: grid; }
.admin .stats b { font-size: 22px; font-family: var(--mono); font-weight: 500; }
.admin .stats span { color: var(--muted); font-size: 13px; }
.admin-box { border: 1px solid var(--line); border-radius: 12px; padding: 18px; margin: 16px 0; }
.admin-box h2 { font-size: 17px; margin: 0 0 12px; }
.admin-box.two { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.admin-box .row { display: flex; gap: 8px; align-items: center; margin: 8px 0; flex-wrap: wrap; }
.admin input { font: inherit; height: 40px; padding: 0 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); }
.admin-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 14px; }
.admin-item { font-size: 13px; }
.admin-item img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 8px; display: block; }
.admin-item p { margin: 6px 0; }
.inline { display: inline; }
.inline button { height: 30px; padding: 0 10px; font-size: 12px; margin: 2px 4px 2px 0; background: var(--panel); color: var(--ink); }
.inline button.ok { background: var(--accent); color: var(--on-accent); }
.inline button.danger { color: var(--danger); }
.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
.tbl th, .tbl td { text-align: left; padding: 6px; border-bottom: 1px solid var(--line); vertical-align: top; }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .detail { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .detail-side { position: static; }
  .admin-box.two { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .prose { padding: 28px 16px 48px; }
  .prose h1 { font-size: 28px; }
  .nav a[href$="/license/"] { display: none; }
  .header-row { gap: 12px; height: 56px; }
  .header-search { display: none; }
  .brand { font-size: 16px; }
  .nav { gap: 14px; font-size: 14px; }
  .hero { padding-top: 36px; }
  .sub { font-size: 16px; }
  .search.big { padding-left: 40px; }
  .search.big svg { left: 13px; }
  .search.big button { padding: 0 14px; }
  .sheet { gap: 6px; }
  .grid { grid-template-columns: repeat(2, 1fr); gap: 20px 10px; }
  .cap-meta { display: none; }
  .gen { flex-direction: column; align-items: stretch; }
  .block { margin-top: 44px; }
  .cat-index { grid-template-columns: 1fr 1fr; column-gap: 16px; }
  .cat-index a { grid-template-columns: 28px 1fr auto; padding-right: 0; }
}