/* AI툴모음 — blogaihub.com
   디자인 토큰: 라이트 기본, 다크는 시스템 설정 또는 [data-theme="dark"] */
:root {
  --bg: oklch(98.4% 0.004 255);
  --bg-2: oklch(96.2% 0.008 255);
  --surface: #fff;
  --surface-2: oklch(97.4% 0.006 255);
  --border: oklch(91% 0.01 255);
  --border-strong: oklch(83% 0.015 255);
  --ink: oklch(21% 0.02 260);
  --ink-2: oklch(38% 0.02 260);
  --muted: oklch(54% 0.02 260);
  --accent: oklch(54% 0.2 270);
  --accent-ink: #fff;
  --accent-soft: oklch(94% 0.04 270);
  --accent-2: oklch(64% 0.19 25);
  --ok: oklch(52% 0.13 155);
  --ok-soft: oklch(94% 0.05 155);
  --warn: oklch(55% 0.13 70);
  --warn-soft: oklch(95% 0.05 85);
  --info: oklch(50% 0.13 240);
  --info-soft: oklch(94% 0.04 240);
  --av-l: 92%;
  --av-c: 0.06;
  --av-ink-l: 38%;
  --shadow-sm: 0 1px 2px rgb(15 23 42 / 0.05);
  --shadow-md: 0 10px 28px -12px rgb(15 23 42 / 0.18);
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --header-h: 64px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: oklch(15% 0.015 262);
    --bg-2: oklch(18% 0.02 262);
    --surface: oklch(20% 0.02 262);
    --surface-2: oklch(23% 0.022 262);
    --border: oklch(29% 0.02 262);
    --border-strong: oklch(38% 0.025 262);
    --ink: oklch(95% 0.006 262);
    --ink-2: oklch(84% 0.01 262);
    --muted: oklch(68% 0.02 262);
    --accent: oklch(72% 0.16 270);
    --accent-ink: oklch(15% 0.02 262);
    --accent-soft: oklch(30% 0.07 270);
    --accent-2: oklch(76% 0.16 25);
    --ok: oklch(78% 0.13 155);
    --ok-soft: oklch(30% 0.06 155);
    --warn: oklch(82% 0.12 85);
    --warn-soft: oklch(32% 0.05 85);
    --info: oklch(78% 0.11 240);
    --info-soft: oklch(30% 0.05 240);
    --av-l: 32%;
    --av-c: 0.07;
    --av-ink-l: 88%;
    --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.3);
    --shadow-md: 0 12px 30px -12px rgb(0 0 0 / 0.6);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: oklch(15% 0.015 262);
  --bg-2: oklch(18% 0.02 262);
  --surface: oklch(20% 0.02 262);
  --surface-2: oklch(23% 0.022 262);
  --border: oklch(29% 0.02 262);
  --border-strong: oklch(38% 0.025 262);
  --ink: oklch(95% 0.006 262);
  --ink-2: oklch(84% 0.01 262);
  --muted: oklch(68% 0.02 262);
  --accent: oklch(72% 0.16 270);
  --accent-ink: oklch(15% 0.02 262);
  --accent-soft: oklch(30% 0.07 270);
  --accent-2: oklch(76% 0.16 25);
  --ok: oklch(78% 0.13 155);
  --ok-soft: oklch(30% 0.06 155);
  --warn: oklch(82% 0.12 85);
  --warn-soft: oklch(32% 0.05 85);
  --info: oklch(78% 0.11 240);
  --info-soft: oklch(30% 0.05 240);
  --av-l: 32%;
  --av-c: 0.07;
  --av-ink-l: 88%;
  --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.3);
  --shadow-md: 0 12px 30px -12px rgb(0 0 0 / 0.6);
  color-scheme: dark;
}

/* ---------- 기본 ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 56px); }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  word-break: keep-all;
  overflow-wrap: anywhere;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main { flex: 1; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
input, select, button { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }

.container { width: 100%; max-width: 1200px; margin-inline: auto; padding-inline: 16px; }
@media (min-width: 720px) { .container { padding-inline: 24px; } }

.sr-only { 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: 12px; top: -48px; padding: 8px 14px; background: var(--accent); color: var(--accent-ink); border-radius: var(--radius-sm); z-index: 100; }
.skip-link:focus { top: 12px; }
.muted { color: var(--muted); }

/* ---------- 헤더 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklch, var(--bg) 86%, transparent);
  backdrop-filter: saturate(1.6) blur(14px);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; gap: 12px; height: var(--header-h); }
.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.08rem; letter-spacing: -0.02em; flex-shrink: 0; }
.logo-mark {
  display: grid; place-items: center; width: 32px; height: 32px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; font-size: 0.78rem; font-weight: 800; letter-spacing: 0;
}
.main-nav { display: flex; gap: 2px; margin-left: 12px; }
.main-nav a { padding: 8px 12px; border-radius: 10px; color: var(--ink-2); font-size: 0.94rem; font-weight: 500; white-space: nowrap; }
.main-nav a:hover { background: var(--bg-2); color: var(--ink); }
.main-nav a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); }
.header-search { margin-left: auto; }
.header-search input {
  width: 220px; height: 38px; padding: 0 14px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface); color: var(--ink);
}
.header-search input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.icon-btn { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface); color: var(--ink-2); flex-shrink: 0; }
.icon-btn:hover { color: var(--ink); border-color: var(--border-strong); }

.cat-strip { border-top: 1px solid var(--border); }
.cat-strip-inner { display: flex; gap: 6px; padding-block: 8px; overflow-x: auto; scrollbar-width: none; }
.cat-strip-inner::-webkit-scrollbar { display: none; }
.cat-strip .chip { padding: 5px 12px; font-size: 0.86rem; flex-shrink: 0; }
/* 화면이 좁아 넘칠 때 오른쪽을 흐리게 해서 가로 스크롤이 있다는 걸 알려 준다 */
@media (max-width: 1100px) {
  .cat-strip-inner {
    -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 32px), transparent);
    mask-image: linear-gradient(to right, #000 calc(100% - 32px), transparent);
    padding-right: 32px;
  }
}

@media (max-width: 860px) {
  .header-search { display: none; }
  .header-inner { flex-wrap: wrap; height: auto; padding-block: 10px; row-gap: 6px; }
  .icon-btn { margin-left: auto; }
  .main-nav { order: 3; width: 100%; margin-left: -12px; overflow-x: auto; scrollbar-width: none; }
  .main-nav::-webkit-scrollbar { display: none; }
}

/* ---------- 공통 요소 ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px;
  border: 1px solid var(--border); border-radius: 999px; background: var(--surface);
  color: var(--ink-2); font-size: 0.88rem; white-space: nowrap; transition: border-color .15s, color .15s;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip[aria-current="page"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 11px 18px; border-radius: 12px; border: 1px solid var(--border-strong);
  background: var(--surface); font-weight: 600; white-space: nowrap;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { color: var(--accent-ink); filter: brightness(1.08); }

.badges { display: flex; flex-wrap: wrap; gap: 6px; }
.badge { display: inline-flex; align-items: center; padding: 2px 9px; border-radius: 999px; font-size: 0.76rem; font-weight: 600; line-height: 1.6; }
.badge-free { background: var(--ok-soft); color: var(--ok); }
.badge-freemium { background: var(--info-soft); color: var(--info); }
.badge-paid { background: var(--warn-soft); color: var(--warn); }
.badge-unknown, .badge-muted { background: var(--bg-2); color: var(--muted); }
.badge-ko { background: var(--accent-soft); color: var(--accent); }

.avatar {
  --hue: 260;
  display: grid; place-items: center; flex-shrink: 0;
  width: 44px; height: 44px; border-radius: 12px;
  background: oklch(var(--av-l) var(--av-c) var(--hue));
  color: oklch(var(--av-ink-l) 0.12 var(--hue));
  font-weight: 800; font-size: 1.15rem;
}
.avatar-lg { width: 72px; height: 72px; border-radius: 20px; font-size: 1.9rem; }

.eyebrow { color: var(--accent); font-weight: 700; font-size: 0.86rem; letter-spacing: 0.02em; margin-bottom: 10px; }
.lead { color: var(--ink-2); font-size: 1.06rem; }

/* ---------- 히어로 ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 72px 0 64px;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(ellipse 70% 60% at 80% 10%, oklch(70% 0.18 270 / 0.16), transparent 60%),
    radial-gradient(ellipse 60% 60% at 10% 90%, oklch(72% 0.17 25 / 0.12), transparent 60%),
    var(--bg);
}
.hero-inner { max-width: 820px; text-align: center; }
.hero h1 { font-size: clamp(2rem, 6vw, 3.4rem); line-height: 1.18; letter-spacing: -0.035em; font-weight: 800; margin-bottom: 18px; }
.grad { background: linear-gradient(120deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lead { max-width: 620px; margin: 0 auto 28px; }
.hero-search {
  display: flex; align-items: center; gap: 8px; max-width: 620px; margin: 0 auto;
  padding: 6px 6px 6px 16px; border-radius: 16px;
  background: var(--surface); border: 1px solid var(--border-strong); box-shadow: var(--shadow-md);
}
.hero-search svg { color: var(--muted); flex-shrink: 0; }
.hero-search input { flex: 1; min-width: 0; height: 44px; border: 0; background: transparent; font-size: 1.02rem; }
.hero-search input:focus { outline: none; }
.hero-search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft), var(--shadow-md); }
.hero-search button { height: 44px; padding: 0 20px; border: 0; border-radius: 12px; background: var(--accent); color: var(--accent-ink); font-weight: 700; }
.hero-links { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; margin-top: 18px; }

/* ---------- 섹션 ---------- */
.section { padding-block: 48px 8px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.section-head h2 { font-size: 1.4rem; letter-spacing: -0.025em; }
.more { color: var(--muted); font-size: 0.92rem; white-space: nowrap; }
.more:hover { color: var(--accent); }

.category-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.category-card {
  display: flex; flex-direction: column; gap: 6px; padding: 20px;
  border-radius: var(--radius-lg); background: var(--surface); border: 1px solid var(--border);
  box-shadow: var(--shadow-sm); transition: transform .18s, box-shadow .18s, border-color .18s;
}
.category-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.cat-icon { font-size: 1.7rem; line-height: 1; margin-bottom: 6px; }
.category-card h3 { font-size: 1.08rem; letter-spacing: -0.02em; }
.category-card p { color: var(--muted); font-size: 0.9rem; flex: 1; }
.cat-foot { display: flex; flex-direction: column; gap: 2px; margin-top: 8px; padding-top: 10px; border-top: 1px dashed var(--border); font-size: 0.84rem; }
.cat-foot .count { color: var(--accent); font-weight: 700; }
.cat-foot .names { color: var(--ink-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- 도구 카드 ---------- */
.tool-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.tool-card {
  position: relative; display: flex; flex-direction: column; gap: 12px; padding: 18px;
  border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border);
  box-shadow: var(--shadow-sm); transition: transform .18s, box-shadow .18s, border-color .18s;
}
.tool-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.tool-card-head { display: flex; align-items: center; gap: 12px; min-width: 0; }
.tool-card-title { min-width: 0; }
.tool-card h3 { font-size: 1.04rem; letter-spacing: -0.02em; line-height: 1.35; }
.stretched::after { content: ""; position: absolute; inset: 0; border-radius: inherit; }
.tool-card-cat { display: block; color: var(--muted); font-size: 0.8rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tool-card-desc { color: var(--ink-2); font-size: 0.92rem; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.tool-card-foot { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.visit {
  position: relative; z-index: 1;
  padding: 5px 11px; border-radius: 999px; border: 1px solid var(--border);
  font-size: 0.82rem; font-weight: 600; color: var(--ink-2); white-space: nowrap;
}
.visit:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- 페이지 머리 ---------- */
.page-head {
  padding: 48px 0 32px; border-bottom: 1px solid var(--border);
  background: radial-gradient(ellipse 60% 80% at 90% 0%, oklch(70% 0.18 270 / 0.1), transparent 60%), var(--bg);
}
.page-head h1 { font-size: clamp(1.7rem, 4.6vw, 2.5rem); letter-spacing: -0.03em; line-height: 1.25; margin-bottom: 10px; }
.page-icon { font-size: 2.4rem; line-height: 1; margin-bottom: 10px; }
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; color: var(--muted); font-size: 0.86rem; margin-bottom: 16px; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb [aria-current] { color: var(--ink-2); }

/* ---------- 목록 툴바 ---------- */
.directory { padding-block: 24px 16px; }
.toolbar {
  position: sticky; top: calc(var(--header-h) + 50px); z-index: 10;
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  padding: 10px; margin-bottom: 14px; border-radius: var(--radius);
  background: color-mix(in oklch, var(--surface) 92%, transparent);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border); box-shadow: var(--shadow-sm);
}
.toolbar input[type="search"], .toolbar select {
  height: 40px; padding: 0 12px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); color: var(--ink);
}
.toolbar input:focus, .toolbar select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.toolbar-search { flex: 1 1 240px; }
.toolbar-search input { width: 100%; }
.check { display: inline-flex; align-items: center; gap: 6px; height: 40px; padding: 0 12px; border-radius: 10px; border: 1px solid var(--border); font-size: 0.92rem; cursor: pointer; }
.check input { accent-color: var(--accent); width: 16px; height: 16px; }
.result-meta { color: var(--muted); font-size: 0.9rem; margin-bottom: 12px; }
.empty { padding: 48px 0; text-align: center; color: var(--muted); }

@media (max-width: 860px) {
  .toolbar { top: 0; position: static; }
  .toolbar label:not(.toolbar-search):not(.check) { flex: 1 1 140px; }
  .toolbar select { width: 100%; }
}

/* ---------- 상세 ---------- */
.detail { padding-block: 28px 32px; }
.detail-head { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; padding-bottom: 28px; border-bottom: 1px solid var(--border); }
.detail-title { flex: 1 1 320px; min-width: 0; }
.detail-title h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); letter-spacing: -0.035em; line-height: 1.2; }
.detail-title .lead { margin: 6px 0 12px; }
.detail-grid { display: grid; gap: 28px; grid-template-columns: minmax(0, 1fr); padding-top: 28px; }
@media (min-width: 900px) { .detail-grid { grid-template-columns: minmax(0, 1fr) 340px; } }
.detail-body h2 { font-size: 1.15rem; margin: 0 0 12px; letter-spacing: -0.02em; }
.detail-body h2:not(:first-child) { margin-top: 28px; }
.detail-body p { color: var(--ink-2); margin-bottom: 12px; font-size: 1.02rem; line-height: 1.8; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; }
.detail-side { align-self: start; padding: 20px; border-radius: var(--radius-lg); background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-sm); }
@media (min-width: 900px) { .detail-side { position: sticky; top: calc(var(--header-h) + 70px); } }
.facts > div { display: grid; grid-template-columns: 88px 1fr; gap: 8px; padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 0.93rem; }
.facts dt { color: var(--muted); }
.facts dd { color: var(--ink); font-weight: 500; }
.facts a { color: var(--accent); }
.side-title { font-size: 0.95rem; margin: 18px 0 8px; }
.sources { padding-left: 18px; font-size: 0.86rem; }
.sources li { margin-bottom: 4px; }
.sources a { color: var(--accent); word-break: break-all; }
.note { margin-top: 16px; padding: 10px 12px; border-radius: 10px; background: var(--bg-2); color: var(--muted); font-size: 0.84rem; }

/* ---------- 최근 등록 / 본문형 페이지 ---------- */
.date-group { padding-top: 32px; }
.date-head { font-size: 1rem; color: var(--muted); font-weight: 600; margin-bottom: 14px; }
.prose { max-width: 780px; padding-block: 32px 48px; }
.prose h2 { font-size: 1.25rem; letter-spacing: -0.02em; margin: 32px 0 12px; }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: var(--ink-2); line-height: 1.8; }
.prose ul, .prose ol { padding-left: 22px; display: grid; gap: 6px; }
.inline-list { list-style: none; padding: 0 !important; display: flex !important; flex-wrap: wrap; gap: 8px !important; }
.legend > div { display: grid; grid-template-columns: 110px 1fr; gap: 12px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--border); }
.legend dd { color: var(--ink-2); font-size: 0.94rem; }
.not-found { text-align: center; padding-block: 80px; }
.not-found .hero-search { margin: 24px auto; }

/* ---------- 푸터 ---------- */
.site-footer { margin-top: 64px; border-top: 1px solid var(--border); background: var(--bg-2); }
.footer-inner { display: grid; gap: 16px; padding-block: 32px; }
.footer-inner .muted { font-size: 0.88rem; margin-top: 8px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 4px 18px; font-size: 0.92rem; color: var(--ink-2); }
.footer-nav a:hover { color: var(--accent); }
.footer-note { font-size: 0.82rem; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
  .tool-card:hover, .category-card:hover { transform: none; }
}