/* 하이퍼링크 — 디자인 시스템 */

:root {
  --navy-900: #05080F;
  --navy-800: #0A1327;
  --navy-700: #0C1832;
  --navy-600: #101B36;
  --navy-500: #18264A;

  --blue-500: #3D6FF6;
  --blue-400: #5B85F8;
  --blue-300: #7BA0FF;
  --blue-050: #EEF3FF;

  --bg:        #F7F9FC;
  --bg-soft:   #EDF1F7;
  --surface:   #FFFFFF;
  --surface-2: #F2F5FA;
  --border:    #DDE3EC;
  --border-2:  #C7D0DE;

  --tx:   #0A1327;
  --tx-2: #4A5568;
  --tx-3: #7F8AA1;

  --ok:   #17915B;
  --warn: #B26A00;
  --err:  #D03B3B;

  --radius:    14px;
  --radius-sm: 9px;
  --shadow:    0 1px 2px rgba(10,19,39,.05), 0 8px 24px rgba(10,19,39,.06);
  --shadow-lg: 0 2px 4px rgba(10,19,39,.06), 0 18px 46px rgba(10,19,39,.12);
  --font: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
          "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  --mono: "SFMono-Regular", ui-monospace, Menlo, Consolas, "D2Coding", monospace;
  --maxw: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:        #05080F;
    --bg-soft:   #0A1327;
    --surface:   #0C1832;
    --surface-2: #101B36;
    --border:    #1D2A4C;
    --border-2:  #2A3A63;
    --tx:   #E9EEF5;
    --tx-2: #AEB8CB;
    --tx-3: #7F8AA1;
    --blue-050: #131F42;
    --shadow:    0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
    --shadow-lg: 0 2px 4px rgba(0,0,0,.35), 0 18px 46px rgba(0,0,0,.5);
  }
}
:root[data-theme="dark"] {
  --bg: #05080F; --bg-soft: #0A1327; --surface: #0C1832; --surface-2: #101B36;
  --border: #1D2A4C; --border-2: #2A3A63;
  --tx: #E9EEF5; --tx-2: #AEB8CB; --tx-3: #7F8AA1; --blue-050: #131F42;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
  --shadow-lg: 0 2px 4px rgba(0,0,0,.35), 0 18px 46px rgba(0,0,0,.5);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--tx);
  font-family: var(--font); font-size: 16px; line-height: 1.65;
  letter-spacing: -.011em; word-break: keep-all;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--blue-500); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.32; letter-spacing: -.024em; margin: 0 0 .5em; font-weight: 700; }
h1 { font-size: clamp(1.7rem, 1.2rem + 2.2vw, 2.6rem); }
h2 { font-size: clamp(1.3rem, 1.05rem + 1.1vw, 1.7rem); }
h3 { font-size: 1.12rem; }
p  { margin: 0 0 1em; }
code, kbd { font-family: var(--mono); font-size: .9em; }
:focus-visible { outline: 2px solid var(--blue-500); outline-offset: 2px; border-radius: 4px; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.center-page { display: grid; place-items: center; min-height: 100dvh; padding: 24px; }

/* ── 헤더 ───────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap { display: flex; align-items: center; gap: 20px; height: 62px; }
.brand { display: flex; align-items: center; gap: 9px; font-weight: 800; color: var(--tx); font-size: 1.06rem; letter-spacing: -.03em; }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 27px; height: 27px; border-radius: 8px; flex: 0 0 auto;
  background: linear-gradient(140deg, var(--blue-400), var(--navy-700));
  display: grid; place-items: center; color: #fff; font-size: 14px;
}
.nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.nav a {
  color: var(--tx-2); font-size: .93rem; font-weight: 600;
  padding: 7px 12px; border-radius: 8px;
}
.nav a:hover { background: var(--surface-2); color: var(--tx); text-decoration: none; }
.theme-btn {
  border: 1px solid var(--border); background: var(--surface); color: var(--tx-2);
  width: 34px; height: 34px; border-radius: 9px; cursor: pointer; font-size: 15px;
  display: grid; place-items: center; margin-left: 6px;
}
.theme-btn:hover { border-color: var(--border-2); color: var(--tx); }

/* ── 히어로 ─────────────────────────── */
.hero { padding: 52px 0 30px; text-align: center; }
.hero h1 { margin-bottom: .35em; }
.hero .lede { color: var(--tx-2); font-size: 1.05rem; max-width: 620px; margin: 0 auto; }
.hero .badges { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 20px; }
.badge {
  font-size: .8rem; font-weight: 600; color: var(--tx-2);
  background: var(--surface); border: 1px solid var(--border);
  padding: 5px 11px; border-radius: 999px;
}

/* ── 카드/패널 ──────────────────────── */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px;
}
.card + .card { margin-top: 18px; }
.notice { max-width: 440px; text-align: center; }
.notice-emoji { font-size: 40px; margin-bottom: 10px; }

/* ── 탭 ─────────────────────────────── */
.tabs {
  display: flex; gap: 4px; padding: 4px; margin: 0 auto 20px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 12px; width: fit-content; max-width: 100%; overflow-x: auto;
}
.tab {
  border: 0; background: transparent; color: var(--tx-2); cursor: pointer;
  font: inherit; font-weight: 650; font-size: .94rem; white-space: nowrap;
  padding: 9px 18px; border-radius: 9px;
}
.tab:hover { color: var(--tx); }
.tab[aria-selected="true"] { background: var(--surface); color: var(--tx); box-shadow: var(--shadow); }
.panel[hidden] { display: none; }

/* ── 폼 ─────────────────────────────── */
.field { margin-bottom: 15px; }
.field label, .lbl {
  display: block; font-size: .86rem; font-weight: 650;
  color: var(--tx-2); margin-bottom: 6px;
}
.lbl .req { color: var(--err); margin-left: 2px; }
.hint { font-size: .8rem; color: var(--tx-3); margin-top: 5px; line-height: 1.5; }
input[type=text], input[type=url], input[type=search], textarea, select {
  width: 100%; font: inherit; font-size: .96rem; color: var(--tx);
  background: var(--surface); border: 1px solid var(--border-2);
  border-radius: var(--radius-sm); padding: 10px 12px; transition: border-color .12s, box-shadow .12s;
}
textarea { min-height: 110px; resize: vertical; font-family: var(--mono); font-size: .88rem; line-height: 1.6; }
input:focus, textarea:focus, select:focus {
  outline: none; border-color: var(--blue-500);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--blue-500) 18%, transparent);
}
input::placeholder, textarea::placeholder { color: var(--tx-3); }
.grid-2 { display: grid; gap: 15px; grid-template-columns: 1fr 1fr; }
.grid-3 { display: grid; gap: 15px; grid-template-columns: repeat(3, 1fr); }
@media (max-width: 700px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row > .grow { flex: 1 1 220px; min-width: 0; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  font: inherit; font-weight: 650; font-size: .94rem; cursor: pointer;
  padding: 10px 18px; border-radius: var(--radius-sm);
  border: 1px solid var(--border-2); background: var(--surface); color: var(--tx);
  transition: transform .08s, background .12s, border-color .12s;
}
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--blue-500); border-color: var(--blue-500); color: #fff; }
.btn-primary:hover { background: var(--blue-400); border-color: var(--blue-400); }
.btn-lg { padding: 13px 26px; font-size: 1rem; }
.btn-sm { padding: 6px 12px; font-size: .84rem; border-radius: 7px; }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }
.btn-ghost { border-color: transparent; background: transparent; color: var(--tx-2); }
.btn-ghost:hover { background: var(--surface-2); }

/* 프리셋 칩 */
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 6px; }
.chip {
  font: inherit; font-size: .82rem; font-weight: 600; cursor: pointer;
  padding: 5px 11px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface-2); color: var(--tx-2);
}
.chip:hover { border-color: var(--blue-500); color: var(--blue-500); }
.chip[aria-pressed="true"] { background: var(--blue-500); border-color: var(--blue-500); color: #fff; }

/* ── 결과 박스 ──────────────────────── */
.result {
  margin-top: 18px; padding: 16px; border-radius: var(--radius-sm);
  background: var(--blue-050); border: 1px solid color-mix(in srgb, var(--blue-500) 26%, transparent);
}
.result-label { font-size: .78rem; font-weight: 700; color: var(--tx-2); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 8px; }
.result-url {
  font-family: var(--mono); font-size: .92rem; line-height: 1.6;
  word-break: break-all; color: var(--tx); margin-bottom: 12px;
  user-select: all;
}
.result-url.big { font-size: 1.15rem; font-weight: 600; }
.msg { margin-top: 14px; padding: 11px 14px; border-radius: var(--radius-sm); font-size: .9rem; }
.msg-err { background: color-mix(in srgb, var(--err) 10%, var(--surface)); border: 1px solid color-mix(in srgb, var(--err) 34%, transparent); color: var(--err); }
.msg-ok  { background: color-mix(in srgb, var(--ok) 10%, var(--surface));  border: 1px solid color-mix(in srgb, var(--ok) 34%, transparent);  color: var(--ok); }
.msg[hidden] { display: none; }

/* ── QR ─────────────────────────────── */
.qr-out { display: flex; gap: 22px; align-items: flex-start; flex-wrap: wrap; margin-top: 18px; }
.qr-canvas-wrap {
  background: #fff; padding: 14px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); line-height: 0;
}
.qr-canvas-wrap canvas { display: block; width: 220px; height: 220px; image-rendering: pixelated; }
.qr-side { flex: 1 1 200px; min-width: 0; }

/* ── 테이블/통계 ────────────────────── */
.stat-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.stat {
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 15px 16px;
}
.stat .k { font-size: .8rem; color: var(--tx-3); font-weight: 600; margin-bottom: 4px; }
.stat .v { font-size: 1.7rem; font-weight: 800; letter-spacing: -.03em; line-height: 1.2; }
.stat .v small { font-size: .5em; font-weight: 600; color: var(--tx-3); }

.bars { display: grid; gap: 7px; }
.bar-row { display: grid; grid-template-columns: minmax(80px, 34%) 1fr auto; gap: 10px; align-items: center; font-size: .88rem; }
.bar-row .name { color: var(--tx-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-track { background: var(--surface-2); border-radius: 999px; height: 9px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--blue-500), var(--blue-300)); }
.bar-row .n { font-variant-numeric: tabular-nums; font-weight: 650; color: var(--tx-2); }

.spark { display: flex; align-items: flex-end; gap: 3px; height: 110px; margin-top: 6px; }
.spark div {
  flex: 1; min-width: 3px; background: var(--blue-500); border-radius: 3px 3px 0 0;
  min-height: 2px; opacity: .85;
}
.spark div:hover { opacity: 1; }

.tbl { width: 100%; border-collapse: collapse; font-size: .9rem; }
.tbl th, .tbl td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); }
.tbl th { font-size: .8rem; color: var(--tx-3); font-weight: 650; }
.tbl td.num { text-align: right; font-variant-numeric: tabular-nums; }
.tbl-scroll { overflow-x: auto; }

/* ── 최근 목록 ──────────────────────── */
.list { list-style: none; margin: 0; padding: 0; }
.list li {
  display: flex; gap: 12px; align-items: center;
  padding: 11px 0; border-bottom: 1px solid var(--border);
}
.list li:last-child { border-bottom: 0; }
.list .li-main { flex: 1 1 auto; min-width: 0; }
.list .li-title { font-weight: 600; font-size: .93rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.list .li-sub { font-size: .8rem; color: var(--tx-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-family: var(--mono); }

/* ── 광고 슬롯 ──────────────────────── */
.ad-slot {
  margin: 28px auto; max-width: var(--maxw); padding: 0 20px;
  min-height: 100px; display: block;
}
.ad-slot .ad-inner {
  border: 1px dashed var(--border-2); border-radius: var(--radius-sm);
  min-height: 100px; display: grid; place-items: center;
  color: var(--tx-3); font-size: .78rem; letter-spacing: .06em;
}

/* ── 콘텐츠(가이드) ─────────────────── */
.article { max-width: 760px; margin: 0 auto; padding: 34px 20px 60px; }
.article h1 { margin-bottom: .2em; }
.article .meta { color: var(--tx-3); font-size: .86rem; margin-bottom: 30px; }
.article h2 { margin-top: 1.9em; padding-top: .3em; }
.article h3 { margin-top: 1.5em; }
.article ul, .article ol { padding-left: 1.25em; margin: 0 0 1em; }
.article li { margin-bottom: .45em; }
.article blockquote {
  margin: 1.4em 0; padding: 14px 18px; border-left: 3px solid var(--blue-500);
  background: var(--surface-2); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--tx-2);
}
.article pre {
  background: var(--navy-800); color: #E9EEF5; padding: 14px 16px;
  border-radius: var(--radius-sm); overflow-x: auto; font-size: .84rem; line-height: 1.6;
}
.article table { width: 100%; border-collapse: collapse; font-size: .9rem; margin: 1.2em 0; }
.article th, .article td { border: 1px solid var(--border); padding: 9px 11px; text-align: left; vertical-align: top; }
.article th { background: var(--surface-2); font-weight: 650; }
.article code:not(pre code) {
  background: var(--surface-2); border: 1px solid var(--border);
  padding: 1px 5px; border-radius: 5px;
}

.guide-cards { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.guide-card {
  display: block; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; color: var(--tx);
  transition: border-color .12s, transform .12s, box-shadow .12s;
}
.guide-card:hover { text-decoration: none; border-color: var(--blue-500); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.guide-card h3 { margin-bottom: .35em; }
.guide-card p { color: var(--tx-2); font-size: .9rem; margin: 0; }

/* ── 푸터 ───────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border); margin-top: 60px;
  padding: 30px 0 44px; color: var(--tx-3); font-size: .86rem;
}
.site-footer .wrap { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.site-footer a { color: var(--tx-2); }
.site-footer .sep { margin-left: auto; }

/* ── 토스트 ─────────────────────────── */
.toast {
  position: fixed; left: 50%; bottom: 26px; transform: translateX(-50%) translateY(14px);
  background: var(--navy-800); color: #fff; padding: 11px 20px; border-radius: 999px;
  font-size: .9rem; font-weight: 600; box-shadow: var(--shadow-lg);
  opacity: 0; pointer-events: none; transition: opacity .18s, transform .18s; z-index: 200;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.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;
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

/* ── 이동 경로 ──────────────────────── */
.crumbs {
  display: flex; flex-wrap: wrap; align-items: center; gap: 7px;
  font-size: .84rem; color: var(--tx-3); margin-bottom: 18px;
}
.crumbs a { color: var(--tx-2); }
.crumbs span[aria-hidden] { color: var(--border-2); }