/* ==========================================================
   계산창고 calcgo.kr — 공통 스타일
   색상/폰트/간격을 바꾸려면 아래 :root 값만 수정하세요.
   ========================================================== */

:root {
  /* 색상 */
  --ink:        #16202B;   /* 본문 텍스트 · 결과판 배경 */
  --ink-soft:   #52626E;   /* 보조 텍스트 */
  --paper:      #F6F8F5;   /* 페이지 배경 */
  --card:       #FFFFFF;   /* 카드 배경 */
  --line:       #DCE3DC;   /* 테두리 */
  --pine:       #17614F;   /* 메인 강조색 */
  --pine-deep:  #0F4235;
  --pine-soft:  #E7F1ED;   /* 강조색 옅은 배경 */
  --tag:        #E0A32E;   /* 라벨 태그 색 */
  --danger:     #B4442A;

  /* 폰트 */
  --font-body: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
               system-ui, "Malgun Gothic", sans-serif;
  --font-num:  "Space Grotesk", var(--font-body);

  /* 레이아웃 */
  --header-h: 56px;
  --wrap: 1080px;
  --radius: 14px;
}

/* ---------- 리셋 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  word-break: keep-all;
  overflow-wrap: break-word;
}
img { max-width: 100%; display: block; }
a { color: var(--pine); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select { font-family: inherit; font-size: inherit; }

:focus-visible {
  outline: 3px solid var(--tag);
  outline-offset: 2px;
  border-radius: 4px;
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }

/* ---------- 헤더 (스크롤 고정) ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(246, 248, 245, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 18px;
  color: var(--ink);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 26px; height: 26px;
  border-radius: 7px;
  background: var(--pine);
  color: #fff;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 15px;
  display: grid;
  place-items: center;
}
.header-nav {
  margin-left: auto;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}
.header-nav::-webkit-scrollbar { display: none; }
.header-nav a {
  padding: 6px 11px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-soft);
  white-space: nowrap;
}
.header-nav a:hover { background: var(--pine-soft); color: var(--pine-deep); text-decoration: none; }
.header-nav a[aria-current="page"] { background: var(--pine); color: #fff; }

/* ---------- 히어로 ---------- */
.hero { padding: 56px 0 40px; text-align: center; }
.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(30px, 6vw, 46px);
  line-height: 1.25;
  letter-spacing: -0.035em;
  font-weight: 800;
}
.hero p { margin: 0 auto; max-width: 540px; color: var(--ink-soft); font-size: 17px; }

/* 검색 */
.searchbox { max-width: 520px; margin: 26px auto 0; position: relative; }
.searchbox input {
  width: 100%;
  padding: 15px 18px;
  border: 1.5px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink);
}
.searchbox input:focus { border-color: var(--pine); outline: none; }
.search-results {
  position: absolute; left: 0; right: 0; top: calc(100% + 8px);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(22, 32, 43, .12);
  overflow: hidden;
  text-align: left;
  display: none;
  max-height: 320px; overflow-y: auto;
  z-index: 30;
}
.search-results.open { display: block; }
.search-results a {
  display: flex; justify-content: space-between; gap: 12px;
  padding: 12px 18px;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}
.search-results a:last-child { border-bottom: none; }
.search-results a:hover { background: var(--pine-soft); text-decoration: none; }
.search-results .rcat { color: var(--ink-soft); font-size: 13px; flex-shrink: 0; }
.search-empty { padding: 14px 18px; color: var(--ink-soft); font-size: 14px; }

/* ---------- 섹션 ---------- */
.section { padding: 34px 0; }
.section-head {
  display: flex; align-items: baseline; gap: 12px;
  margin-bottom: 18px;
}
.section-head h2 {
  margin: 0; font-size: 20px; font-weight: 800; letter-spacing: -0.02em;
}
.section-head .count {
  font-family: var(--font-num); font-size: 13px; font-weight: 600;
  color: var(--ink-soft);
}

/* ---------- 카테고리 카드 (3×2) ---------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.cat-card {
  position: relative;
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px 18px;
  color: var(--ink);
  transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease;
}
.cat-card:hover {
  text-decoration: none;
  transform: translateY(-3px);
  border-color: var(--pine);
  box-shadow: 0 10px 24px rgba(22, 32, 43, .09);
}
.cat-card .bin-tab {
  position: absolute; top: -1px; left: 20px;
  background: var(--tag);
  color: #3A2A05;
  font-family: var(--font-num);
  font-size: 11px; font-weight: 700;
  letter-spacing: .04em;
  padding: 3px 9px 4px;
  border-radius: 0 0 6px 6px;
}
.cat-card .cat-icon { font-size: 26px; line-height: 1; margin: 10px 0 12px; }
.cat-card h3 { margin: 0 0 4px; font-size: 17px; font-weight: 700; letter-spacing: -0.02em; }
.cat-card p { margin: 0; font-size: 13.5px; color: var(--ink-soft); line-height: 1.55; }

/* ---------- 계산기 목록 ---------- */
.calc-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.calc-item {
  display: flex; align-items: center; gap: 12px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 14px 16px;
  color: var(--ink);
  transition: border-color .14s ease, background .14s ease;
}
.calc-item:hover { text-decoration: none; border-color: var(--pine); background: var(--pine-soft); }
.calc-item .ci-name { font-weight: 600; font-size: 15px; }
.calc-item .ci-desc { font-size: 13px; color: var(--ink-soft); }
.calc-item .ci-arrow { margin-left: auto; color: var(--pine); font-family: var(--font-num); }

/* ---------- 계산기 페이지 ---------- */
.breadcrumb {
  padding: 20px 0 0;
  font-size: 13.5px;
  color: var(--ink-soft);
}
.breadcrumb a { color: var(--ink-soft); }
.breadcrumb span { margin: 0 6px; opacity: .5; }

.calc-header { padding: 14px 0 24px; }
.calc-header h1 {
  margin: 0 0 8px;
  font-size: clamp(26px, 5vw, 34px);
  letter-spacing: -0.035em;
  font-weight: 800;
}
.calc-header p { margin: 0; color: var(--ink-soft); }

.calc-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 22px;
  align-items: start;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}

/* 입력 폼 */
.field { margin-bottom: 16px; }
.field:last-child { margin-bottom: 0; }
.field label {
  display: block;
  font-size: 14px; font-weight: 600;
  margin-bottom: 6px;
}
.field .hint { font-weight: 400; color: var(--ink-soft); font-size: 12.5px; margin-left: 6px; }
.input-row { display: flex; align-items: center; gap: 8px; }
.field input, .field select {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font-family: var(--font-num);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}
.field select { font-family: var(--font-body); }
.field input:focus, .field select:focus { border-color: var(--pine); outline: none; }
.field .suffix {
  flex-shrink: 0; font-size: 14px; color: var(--ink-soft); font-weight: 600;
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.btn-row { display: flex; gap: 10px; margin-top: 20px; }
.btn {
  flex: 1;
  padding: 13px 18px;
  border-radius: 10px;
  border: 1.5px solid var(--pine);
  background: var(--pine);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  transition: background .14s ease;
}
.btn:hover { background: var(--pine-deep); border-color: var(--pine-deep); }
.btn-ghost { background: transparent; color: var(--pine); }
.btn-ghost:hover { background: var(--pine-soft); color: var(--pine-deep); }

/* 결과판 — 시그니처 요소 */
.result-slab {
  background: var(--ink);
  color: #fff;
  border-radius: var(--radius);
  padding: 26px 24px;
  position: sticky;
  top: calc(var(--header-h) + 16px);
}
.result-slab .rs-label {
  font-size: 12.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  font-family: var(--font-num);
  font-weight: 600;
  color: var(--tag);
  margin-bottom: 10px;
}
.result-slab .rs-main {
  font-family: var(--font-num);
  font-size: clamp(30px, 7vw, 40px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  word-break: break-all;
}
.result-slab .rs-main.is-empty { color: rgba(255,255,255,.35); font-size: 22px; font-weight: 500; }
.result-slab .rs-note { margin-top: 8px; font-size: 13.5px; color: rgba(255,255,255,.62); }
.result-slab .rs-sub { margin-top: 18px; border-top: 1px solid rgba(255,255,255,.14); padding-top: 14px; }
.result-slab .rs-sub div {
  display: flex; justify-content: space-between; gap: 14px;
  padding: 6px 0;
  font-size: 14px;
}
.result-slab .rs-sub .k { color: rgba(255,255,255,.6); }
.result-slab .rs-sub .v {
  font-family: var(--font-num); font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.result-slab .rs-sub .v.neg { color: #F2A48D; }

@keyframes stamp {
  0%   { transform: scale(1.035); opacity: .55; }
  100% { transform: scale(1); opacity: 1; }
}
.result-slab .rs-main.stamped { animation: stamp .22s ease-out; }
@media (prefers-reduced-motion: reduce) {
  .result-slab .rs-main.stamped { animation: none; }
  html { scroll-behavior: auto; }
  .cat-card:hover { transform: none; }
}

/* 설명 본문 */
.guide { margin-top: 34px; }
.guide h2 {
  font-size: 20px; font-weight: 800; letter-spacing: -0.025em;
  margin: 32px 0 12px; padding-top: 4px;
}
.guide h3 { font-size: 16.5px; font-weight: 700; margin: 22px 0 8px; }
.guide p { margin: 0 0 12px; }
.guide ul, .guide ol { margin: 0 0 14px; padding-left: 20px; }
.guide li { margin-bottom: 6px; }
.guide table {
  width: 100%; border-collapse: collapse; margin: 0 0 16px; font-size: 14.5px;
}
.guide th, .guide td {
  border: 1px solid var(--line); padding: 9px 12px; text-align: left;
}
.guide th { background: var(--pine-soft); font-weight: 700; }
.guide td.num { font-family: var(--font-num); font-variant-numeric: tabular-nums; text-align: right; }
.callout {
  background: var(--pine-soft);
  border-left: 4px solid var(--pine);
  border-radius: 0 10px 10px 0;
  padding: 14px 16px;
  margin: 0 0 16px;
  font-size: 14.5px;
}
.callout strong { color: var(--pine-deep); }

/* 관련 계산기 */
.related { margin-top: 40px; }

/* 광고 슬롯 */
.ad-slot {
  margin: 28px 0;
  min-height: 90px;
  display: grid; place-items: center;
  border: 1px dashed var(--line);
  border-radius: 10px;
  color: var(--ink-soft);
  font-size: 12.5px;
}

/* ---------- 푸터 ---------- */
.site-footer {
  margin-top: 56px;
  border-top: 1px solid var(--line);
  background: var(--card);
  padding: 34px 0 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 26px;
}
.footer-grid h4 {
  margin: 0 0 10px; font-size: 13px; font-weight: 700;
  letter-spacing: .04em; color: var(--ink-soft); text-transform: uppercase;
  font-family: var(--font-num);
}
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 6px; font-size: 14px; }
.footer-grid a { color: var(--ink-soft); }
.footer-grid a:hover { color: var(--pine); }
.footer-about p { margin: 0 0 10px; font-size: 14px; color: var(--ink-soft); max-width: 320px; }
.footer-bottom {
  margin-top: 26px; padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 13px; color: var(--ink-soft);
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
}
.disclaimer {
  margin-top: 12px; font-size: 12.5px; color: var(--ink-soft); line-height: 1.6;
}

/* ---------- 반응형 ---------- */
@media (max-width: 900px) {
  .calc-shell { grid-template-columns: 1fr; }
  .result-slab { position: static; order: -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-about { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .hero { padding: 36px 0 28px; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .cat-card { padding: 20px 16px 16px; }
  .calc-list { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .panel { padding: 18px 16px; }
  .btn-row { flex-direction: column; }
}