:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --surface-2: #f0f0ec;
  --text: #1b1b1a;
  --muted: #6b6b66;
  --line: #e2e2dc;
  --accent: #e5484d;
  --accent-ink: #ffffff;
  --ok: #1f8a4c;
  --warn: #b26a00;
  --bad: #c62a2f;
  --radius: 14px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111110; --surface: #1a1a19; --surface-2: #232321; --text: #ededea;
    --muted: #a0a09a; --line: #2f2f2c; --accent: #ff6369; --ok: #4cc38a; --warn: #f1a10d; --bad: #ff6369;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #111110; --surface: #1a1a19; --surface-2: #232321; --text: #ededea;
  --muted: #a0a09a; --line: #2f2f2c; --accent: #ff6369; --ok: #4cc38a; --warn: #f1a10d; --bad: #ff6369;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.6 "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  word-break: keep-all; overflow-wrap: anywhere;
}
/* 일본어·중국어·태국어는 띄어쓰기가 없어 keep-all 이면 문장부호에서만 줄이 바뀐다 */
html:is([lang|="ja"], [lang|="zh"], [lang|="th"]) body { word-break: normal; line-break: strict; }
a { color: inherit; }
code, .mono { font-family: var(--mono); font-size: .9em; }

.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  max-width: 1040px; margin: 0 auto; padding: 18px 16px;
}
.brand { text-decoration: none; font-weight: 600; letter-spacing: -.01em; }
.brand-o { color: var(--accent); }
.brand b { font-weight: 800; }
.topbar nav { display: flex; align-items: center; gap: 10px; }
.ocam { font-size: 14px; color: var(--muted); text-decoration: none; }
.ocam:hover { color: var(--text); }
.theme-btn {
  width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--line);
  background: var(--surface); color: var(--text); cursor: pointer; font-size: 16px;
}

.wrap { max-width: 1040px; margin: 0 auto; padding: 8px 16px 48px; }
.foot { max-width: 1040px; margin: 0 auto; padding: 24px 16px 40px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); }
.foot p { margin: 4px 0; }

/* 허브 */
.hero { padding: 40px 0 28px; }
.hero h1 { font-size: clamp(30px, 6vw, 48px); line-height: 1.15; letter-spacing: -.03em; margin: 0 0 12px; }
.hero p { color: var(--muted); font-size: 18px; margin: 0; max-width: 620px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.card {
  display: flex; flex-direction: column; gap: 10px; padding: 22px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  text-decoration: none; transition: transform .15s, border-color .15s;
}
.card:hover { transform: translateY(-2px); border-color: var(--accent); }
.card-icon { font-size: 28px; line-height: 1; }
.card h2 { font-size: 19px; margin: 0; letter-spacing: -.01em; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.chip {
  align-self: flex-start; font-size: 12px; padding: 2px 10px; border-radius: 99px;
  background: var(--surface-2); color: var(--muted);
}

/* 도구 페이지 공통 */
.back { display: inline-block; color: var(--muted); text-decoration: none; font-size: 14px; margin: 8px 0 16px; }
.back:hover { color: var(--text); }
.tool-title { font-size: clamp(26px, 5vw, 36px); letter-spacing: -.02em; margin: 0 0 8px; display: flex; align-items: center; gap: 12px; }
.tool-icon { font-size: .9em; }
.lead { color: var(--muted); margin: 0 0 28px; max-width: 680px; }

.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; }
.panel h2 { font-size: 17px; margin: 0 0 14px; }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.hidden { display: none !important; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--surface-2); color: var(--text); font: inherit; font-weight: 600; cursor: pointer; text-decoration: none;
}
.btn:hover { border-color: var(--muted); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.05); border-color: var(--accent); }
.btn-big { padding: 14px 26px; font-size: 17px; }

textarea, input[type=text], input[type=password], select {
  width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--bg); color: var(--text); font: inherit;
}
textarea { min-height: 180px; resize: vertical; }
textarea:focus, input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
label.field { display: block; font-size: 14px; color: var(--muted); }
label.field > span { display: block; margin-bottom: 6px; }
.check { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; }

.kv { display: grid; grid-template-columns: minmax(110px, 200px) 1fr; gap: 0; }
.kv > div { padding: 9px 0; border-bottom: 1px solid var(--line); }
.kv > div:nth-child(odd) { color: var(--muted); font-size: 14px; padding-right: 12px; }
.kv > div:nth-child(even) { font-family: var(--mono); font-size: 14px; }
.kv > div:nth-last-child(-n+2) { border-bottom: 0; }

.badge { display: inline-block; font-size: 12px; font-weight: 700; padding: 2px 8px; border-radius: 6px; margin-left: 6px; font-family: inherit; }
.badge.ok { background: color-mix(in srgb, var(--ok) 15%, transparent); color: var(--ok); }
.badge.warn { background: color-mix(in srgb, var(--warn) 15%, transparent); color: var(--warn); }
.badge.bad { background: color-mix(in srgb, var(--bad) 15%, transparent); color: var(--bad); }

.notice { padding: 14px 16px; border-radius: 10px; background: var(--surface-2); font-size: 15px; }
.notice.bad { background: color-mix(in srgb, var(--bad) 12%, var(--surface)); }
.notice.ok { background: color-mix(in srgb, var(--ok) 12%, var(--surface)); }

.copybox { display: flex; gap: 8px; }
.copybox input { font-family: var(--mono); font-size: 14px; }

@media (max-width: 560px) {
  .kv { grid-template-columns: 1fr; }
  .kv > div:nth-child(odd) { border-bottom: 0; padding-bottom: 0; }
  .copybox { flex-direction: column; }
  .panel { padding: 16px; }
}

/* 상단 메뉴(웹도구·오락실) */
.topbar { flex-wrap: wrap; }
.site-nav { flex-wrap: wrap; justify-content: flex-end; gap: 6px 16px !important; }
.nav-link { font-size: 14px; color: var(--muted); text-decoration: none; padding: 4px 2px; border-bottom: 2px solid transparent; white-space: nowrap; }
.nav-link:hover { color: var(--text); }
.nav-link.on { color: var(--text); font-weight: 700; border-bottom-color: var(--accent); }
@media (max-width: 520px) {
  .topbar { padding-bottom: 10px; }
  .site-nav { width: 100%; justify-content: space-between; gap: 6px 8px !important; }
}

/* 웹도구 첫 화면의 오락실 안내 */
.arcade-banner {
  display: flex; align-items: center; gap: 14px; margin-top: 28px; padding: 18px 22px;
  background: var(--surface-2); border: 1px dashed var(--line); border-radius: var(--radius);
  text-decoration: none; color: var(--text); transition: border-color .15s;
}
.arcade-banner:hover { border-color: var(--accent); }
.arcade-banner b { margin-right: 6px; }
.arcade-banner .arrow { margin-left: auto; color: var(--accent); font-weight: 700; }

/* 공통 하단 줄 위 안내 문구 */
.wt-note { max-width: 1040px; margin: 0 auto; padding: 0 16px 14px; color: var(--muted); font-size: 13px; }
.wrap { padding-top: 16px; }
.motion-badge { align-self: flex-start; display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; border-radius: 99px; font-size: 12px; font-weight: 800; background: #7048e8; color: #fff; }