/* ============================================================
   계산모아 (calcmoa.site) — 디자인 시스템
   라이브러리 0, transform/opacity 우선, reduced-motion 가드 포함
   ============================================================ */

:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --ink: #171b23;
  --sub: #5a6372;
  --line: #e5e8ee;
  --accent: #2b5bd7;
  --accent-ink: #ffffff;
  --accent-soft: #eaf0fe;
  --ok: #0e9f6e;
  --err: #d92d20;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(23, 27, 35, .05);
  --shadow-lift: 0 10px 24px rgba(23, 27, 35, .10);
  --maxw: 1080px;
  --spring: cubic-bezier(.34, 1.56, .64, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1217;
    --surface: #171b23;
    --ink: #eef1f6;
    --sub: #9aa4b2;
    --line: #262c37;
    --accent: #6b93ff;
    --accent-ink: #0f1217;
    --accent-soft: #1b2740;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4);
    --shadow-lift: 0 10px 24px rgba(0, 0, 0, .45);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
    system-ui, Roboto, "Helvetica Neue", "Segoe UI", "Apple SD Gothic Neo",
    "Noto Sans KR", "Malgun Gothic", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
img { max-width: 100%; }

/* ---------- 레이아웃 ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.page { max-width: 860px; margin: 0 auto; padding: 28px 20px 64px; }

/* ---------- 헤더 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .bar {
  max-width: var(--maxw); margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; gap: 20px; height: 58px;
}
.logo {
  font-weight: 800; font-size: 19px; color: var(--ink);
  display: flex; align-items: center; gap: 8px; letter-spacing: -.02em;
}
.logo .mark {
  width: 24px; height: 24px; border-radius: 7px;
  background: var(--accent); color: var(--accent-ink);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 900;
}
.site-nav { margin-left: auto; display: flex; gap: 4px; flex-wrap: wrap; }
.site-nav a {
  position: relative; color: var(--sub); font-size: 14px; font-weight: 600;
  padding: 6px 10px; border-radius: 8px;
}
.site-nav a:hover { color: var(--ink); }
/* 언더라인 리빌 (underline reveal) */
.site-nav a::after {
  content: ""; position: absolute; left: 10px; right: 10px; bottom: 2px;
  height: 2px; background: var(--accent); border-radius: 2px;
  transform: scaleX(0); transform-origin: left;
  transition: transform .25s ease;
}
.site-nav a:hover::after { transform: scaleX(1); }

/* ---------- 브레드크럼 ---------- */
.breadcrumb {
  font-size: 13px; color: var(--sub); margin-bottom: 18px;
  display: flex; gap: 6px; flex-wrap: wrap; align-items: center;
}
.breadcrumb a { color: var(--sub); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { opacity: .5; }

/* ---------- 타이포 ---------- */
h1 { font-size: clamp(26px, 4.5vw, 34px); font-weight: 800; letter-spacing: -.03em; line-height: 1.25; margin: 0 0 10px; }
.lead { color: var(--sub); font-size: 16.5px; margin: 0 0 26px; }
h2 { font-size: 21px; font-weight: 800; letter-spacing: -.02em; margin: 40px 0 12px; }
h3 { font-size: 17px; font-weight: 700; margin: 26px 0 8px; }
.content p, .content li { color: var(--ink); font-size: 15.5px; }
.content { overflow-wrap: break-word; }
.content table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 14.5px; }
.content th, .content td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; }
.content th { background: var(--accent-soft); font-weight: 700; }
.content .note {
  background: var(--accent-soft); border-radius: 10px; padding: 12px 16px;
  font-size: 14px; color: var(--sub); margin: 16px 0;
}

/* ---------- 계산기 카드 ---------- */
.calc-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 26px; margin: 0 0 8px;
}
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; font-weight: 700; color: var(--sub); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 11px 14px; font-size: 16px;
  font-family: inherit; color: var(--ink);
  background: var(--bg); border: 1.5px solid var(--line); border-radius: 10px;
  transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}
.field .hint { font-size: 12.5px; color: var(--sub); margin-top: 4px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 560px) { .field-row { grid-template-columns: 1fr; } }
.field-error { color: var(--err); font-size: 13px; margin-top: 6px; display: none; }
.field.invalid .field-error { display: block; }
.field.invalid input, .field.invalid select { border-color: var(--err); }

/* 세그먼트 (탭형 선택) */
.seg { display: flex; gap: 6px; background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 4px; flex-wrap: wrap; }
.seg button {
  flex: 1; min-width: 90px; padding: 8px 10px; font-size: 14px; font-weight: 700;
  font-family: inherit; color: var(--sub); background: transparent;
  border: 0; border-radius: 8px; cursor: pointer;
  transition: background .2s, color .2s;
}
.seg button.on { background: var(--surface); color: var(--accent); box-shadow: var(--shadow); }

/* ---------- 버튼 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; font-size: 15.5px; font-weight: 800; font-family: inherit;
  border-radius: 11px; border: 0; cursor: pointer;
  transition: transform .5s var(--spring), background .2s, opacity .2s;
}
.btn:active { transform: scale(.94); }        /* 스프링 스쿼시 (squash & stretch) */
.btn-primary { background: var(--accent); color: var(--accent-ink); width: 100%; }
.btn-primary:hover { opacity: .92; }
.btn-ghost {
  background: transparent; color: var(--sub);
  border: 1.5px solid var(--line); padding: 8px 14px; font-size: 13.5px; font-weight: 700;
}
.btn-ghost:hover { color: var(--accent); border-color: var(--accent); }
@media (prefers-reduced-motion: reduce) { .btn, .btn:active { transition: none; transform: none; } }

/* ---------- 결과 영역 ---------- */
.result {
  margin-top: 22px; padding: 20px 22px;
  background: var(--accent-soft); border-radius: 12px;
}
.result[hidden] { display: none; }
.result .big {
  font-size: clamp(26px, 5vw, 36px); font-weight: 900; letter-spacing: -.02em;
  color: var(--accent); line-height: 1.3; font-variant-numeric: tabular-nums;
}
.result .label { font-size: 13px; font-weight: 700; color: var(--sub); margin-bottom: 2px; }
.result .rows { margin-top: 12px; display: grid; gap: 6px; }
.result .row {
  display: flex; justify-content: space-between; gap: 12px;
  font-size: 14.5px; padding: 7px 0; border-bottom: 1px dashed color-mix(in srgb, var(--sub) 25%, transparent);
}
.result .row:last-child { border-bottom: 0; }
.result .row b { font-variant-numeric: tabular-nums; }
.result .actions { margin-top: 14px; display: flex; gap: 8px; flex-wrap: wrap; }

/* 에러 셰이크 (error shake) */
@keyframes cm-shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-7px); } 40% { transform: translateX(7px); }
  60% { transform: translateX(-4px); } 80% { transform: translateX(4px); }
}
.shake { animation: cm-shake .4s ease; }
@media (prefers-reduced-motion: reduce) { .shake { animation: none; } }

/* ---------- 도구 그리드 ---------- */
.tool-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 14px; margin: 18px 0;
}
.tool-card {
  display: block; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px; color: var(--ink);
  box-shadow: var(--shadow);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
/* 리프트 (hover lift) */
.tool-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); border-color: var(--accent); }
@media (prefers-reduced-motion: reduce) { .tool-card, .tool-card:hover { transform: none; transition: none; } }
.tool-card .ico { font-size: 24px; margin-bottom: 8px; }
.tool-card b { display: block; font-size: 15.5px; letter-spacing: -.01em; }
.tool-card span { display: block; font-size: 13px; color: var(--sub); margin-top: 3px; line-height: 1.5; }

/* ---------- FAQ ---------- */
.faq details {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 12px; padding: 0 18px; margin-bottom: 10px;
}
.faq summary {
  cursor: pointer; font-weight: 700; font-size: 15px; padding: 14px 0;
  list-style: none; position: relative; padding-right: 26px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 2px; top: 50%;
  transform: translateY(-50%); color: var(--sub); font-weight: 400; font-size: 19px;
  transition: transform .25s ease;
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { margin: 0 0 14px; color: var(--sub); font-size: 14.5px; }

/* ---------- 광고 슬롯 ---------- */
.ad-slot { display: none; }
.ad-slot.on {
  display: block; margin: 22px 0; min-height: 100px;
  text-align: center; overflow: hidden;
}

/* ---------- 히어로 (홈) ---------- */
.hero { text-align: center; padding: 56px 20px 30px; }
.hero h1 { font-size: clamp(30px, 6vw, 44px); margin-bottom: 12px; }
.hero p { color: var(--sub); font-size: 17px; max-width: 560px; margin: 0 auto; }
.hero .accent { color: var(--accent); }
.cat-title { display: flex; align-items: center; gap: 10px; margin-top: 46px; }
.cat-title h2 { margin: 0; }
.cat-title .chip {
  font-size: 12px; font-weight: 800; color: var(--accent);
  background: var(--accent-soft); border-radius: 20px; padding: 3px 10px;
}

/* ---------- 푸터 ---------- */
.site-footer {
  border-top: 1px solid var(--line); margin-top: 40px;
  padding: 34px 20px 44px; font-size: 13.5px; color: var(--sub);
}
.site-footer .cols {
  max-width: var(--maxw); margin: 0 auto;
  display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.site-footer .links { display: flex; gap: 16px; flex-wrap: wrap; }
.site-footer a { color: var(--sub); font-weight: 600; }
.site-footer a:hover { color: var(--accent); }
.site-footer .tiny { max-width: var(--maxw); margin: 14px auto 0; font-size: 12px; opacity: .75; }

/* ---------- 리빌 (fade up / stagger) ---------- */
[data-reveal] {
  opacity: 0; transform: translateY(28px);
  transition: opacity .7s cubic-bezier(.2, .7, .2, 1), transform .7s cubic-bezier(.2, .7, .2, 1);
}
[data-reveal].show { opacity: 1; transform: none; }
[data-stagger].show > * { }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}

/* ---------- 카피 피드백 ---------- */
.copy-btn.done { color: var(--ok); border-color: var(--ok); }

/* ---------- 기타 ---------- */
.center { text-align: center; }
.muted { color: var(--sub); }
.mono { font-variant-numeric: tabular-nums; }
::selection { background: color-mix(in srgb, var(--accent) 25%, transparent); }

/* ---------- 퀴즈 (심리테스트) ---------- */
.quiz-progress { height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; margin-bottom: 22px; }
.quiz-progress i { display: block; height: 100%; width: 0; background: var(--accent); border-radius: 3px; transition: width .35s cubic-bezier(.2,.7,.2,1); }
.quiz-count { font-size: 13px; font-weight: 700; color: var(--sub); margin-bottom: 8px; }
.quiz-q { font-size: 19px; font-weight: 800; letter-spacing: -.02em; line-height: 1.45; margin: 0 0 18px; }
.quiz-answers { display: grid; gap: 10px; }
.quiz-answers button {
  text-align: left; padding: 14px 16px; font-size: 15px; font-weight: 600; font-family: inherit;
  color: var(--ink); background: var(--bg); border: 1.5px solid var(--line); border-radius: 11px;
  cursor: pointer; transition: border-color .2s, background .2s, transform .5s var(--spring);
}
.quiz-answers button:hover { border-color: var(--accent); background: var(--accent-soft); }
.quiz-answers button:active { transform: scale(.97); }
.quiz-back { margin-top: 16px; }
.quiz-intro { text-align: center; padding: 10px 0; }
.quiz-intro .emoji { font-size: 44px; margin-bottom: 10px; }
.quiz-intro p { color: var(--sub); margin: 8px 0 20px; }
.quiz-meta { font-size: 13px; color: var(--sub); margin-bottom: 18px; }
.result-card { text-align: center; }
.result-card .emoji { font-size: 52px; }
.result-card .rtitle { font-size: clamp(22px, 4.5vw, 30px); font-weight: 900; letter-spacing: -.02em; color: var(--accent); margin: 8px 0 4px; }
.result-card .rsub { color: var(--sub); font-size: 14.5px; margin-bottom: 16px; }
.result-card .rdesc { text-align: left; background: var(--accent-soft); border-radius: 12px; padding: 16px 18px; font-size: 15px; }
.result-card .traits { text-align: left; margin: 14px 0 0; display: grid; gap: 8px; }
.result-card .traits li { list-style: none; font-size: 14.5px; padding-left: 24px; position: relative; }
.result-card .traits li::before { content: "✓"; position: absolute; left: 2px; color: var(--accent); font-weight: 900; }
.result-card .pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 14px; }
.result-card .pair div { background: var(--surface); border: 1px solid var(--line); border-radius: 11px; padding: 12px; font-size: 13.5px; }
.result-card .pair b { display: block; font-size: 12px; color: var(--sub); margin-bottom: 4px; }
@media (prefers-reduced-motion: reduce) { .quiz-progress i, .quiz-answers button { transition: none; } }