/* 레이아웃: 휴대폰 기준 한 줄 칼럼(최대 720px). 예식장 조건 → 하객 그룹 → 결과(손익 큰 숫자 + 측별 정산) → 참석률 변화 → 보증인원 비교 → 자주 묻는 질문. 축의금 계산기와 같은 종이·먹·붉은 도장 톤 */
:root{
  --paper:#eef0f3;
  --card:#ffffff;
  --ink:#1b2130;
  --muted:#5b6474;
  --line:#d9dde5;
  --seal:#b8293a;
  --seal-soft:#f8e6e8;
  --good:#1f7a4d;
  --good-soft:#e3f2ea;
  --font-display:"Gowun Batang","Nanum Myeongjo",serif;
  --font-body:"IBM Plex Sans KR","Apple SD Gothic Neo","Malgun Gothic",sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#11141a; --card:#1a1f28; --ink:#e7e9ee; --muted:#9aa3b2; --line:#2c3340;
    --seal:#ec5d69; --seal-soft:#3a1d23; --good:#5cc391; --good-soft:#18301f; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#11141a; --card:#1a1f28; --ink:#e7e9ee; --muted:#9aa3b2; --line:#2c3340;
  --seal:#ec5d69; --seal-soft:#3a1d23; --good:#5cc391; --good-soft:#18301f; color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-body);font-size:16px;line-height:1.6}
main{max-width:720px;margin:0 auto;padding:28px 16px 48px;display:flex;flex-direction:column;gap:20px}
h1,h2{font-family:var(--font-display);text-wrap:balance;margin:0;line-height:1.3}
h1{font-size:1.9rem}
h2{font-size:1.2rem}
p{margin:0}
.lede{color:var(--muted);max-width:36em}
header{display:flex;flex-direction:column;gap:8px}
a:focus-visible,button:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--seal);outline-offset:2px}

.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;display:flex;flex-direction:column;gap:14px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media (max-width:520px){.grid{grid-template-columns:1fr 1fr}}
.field{display:flex;flex-direction:column;gap:6px}
label,.lbl{font-size:.85rem;font-weight:600}
.hint{font-size:.8rem;color:var(--muted)}
input[type=number],input[type=text],select{font:inherit;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:8px;padding:9px 10px;width:100%;font-variant-numeric:tabular-nums}
.unit{display:flex;align-items:center;gap:6px}
.unit span{font-size:.85rem;color:var(--muted);white-space:nowrap}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{font:inherit;font-size:.82rem;padding:4px 10px;border-radius:999px;border:1px solid var(--line);background:transparent;color:var(--ink);cursor:pointer}
.chip:hover{border-color:var(--seal)}

/* 하객 그룹 */
.groups{display:flex;flex-direction:column;gap:10px}
.group{border:1px solid var(--line);border-radius:10px;padding:12px;display:grid;grid-template-columns:110px 1fr repeat(3,1fr) auto;gap:8px;align-items:end}
.group .side{grid-column:1}
.group .name{grid-column:2}
.group .del{align-self:center}
.group .more{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
@media (max-width:640px){
  .group{grid-template-columns:1fr 1fr}
  .group .side,.group .name{grid-column:auto}
  .group .more{grid-template-columns:1fr 1fr}
  .group .del{grid-column:1/-1;justify-self:end}
}
.group .field label{font-size:.75rem;font-weight:500;color:var(--muted)}
.side-groom{border-left:4px solid #3a5a8c}
.side-bride{border-left:4px solid var(--seal)}
.btn{font:inherit;font-weight:600;padding:9px 14px;border-radius:8px;border:1px solid var(--seal);background:var(--seal);color:var(--card);cursor:pointer}
.btn.ghost{background:transparent;color:var(--seal)}
.btn.small{padding:5px 10px;font-size:.82rem}
.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}

/* 결과 */
.result{position:relative;overflow:hidden}
.result::before{content:"";position:absolute;left:0;right:0;top:0;height:6px;background:var(--seal)}
.result.plus::before{background:var(--good)}
.big{font-family:var(--font-display);font-size:2.8rem;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums}
.big small{font-size:1.3rem;font-weight:400;margin-left:2px}
.verdict{display:inline-block;font-size:.85rem;font-weight:600;padding:3px 10px;border-radius:999px;background:var(--seal-soft);color:var(--seal);align-self:flex-start}
.result.plus .verdict{background:var(--good-soft);color:var(--good)}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
@media (max-width:520px){.kpis{grid-template-columns:1fr 1fr}}
.kpi{border:1px solid var(--line);border-radius:8px;padding:8px 10px;display:flex;flex-direction:column}
.kpi span{font-size:.76rem;color:var(--muted)}
.kpi b{font-variant-numeric:tabular-nums;font-size:1.05rem}
.kpi.warn{border-color:var(--seal);background:var(--seal-soft)}
.kpi.warn b{color:var(--seal)}
.note{font-size:.85rem;color:var(--muted)}
table{width:100%;border-collapse:collapse;font-size:.9rem}
th,td{padding:8px 6px;border-bottom:1px solid var(--line);text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
th:first-child,td:first-child{text-align:left}
thead th{font-size:.78rem;color:var(--muted);font-weight:600}
tr.on td{background:var(--seal-soft)}
.neg{color:var(--seal)}
.pos{color:var(--good)}
.tablewrap{overflow-x:auto}

details{border-top:1px solid var(--line);padding:12px 0}
details:last-child{border-bottom:1px solid var(--line)}
summary{cursor:pointer;font-weight:600}
details p{margin-top:8px;color:var(--muted);font-size:.93rem}
footer{font-size:.78rem;color:var(--muted);display:flex;flex-direction:column;gap:4px}
.toast{font-size:.85rem;color:var(--seal);min-height:1.2em}
@media (prefers-reduced-motion: no-preference){.btn,.chip{transition:background .15s,border-color .15s,color .15s}}

/* 사이트 공통: 링크, 광고 칸, 관련 링크, 하단 링크 (위아래 간격은 main의 gap 20px + margin 8px = 28px) */
a{color:var(--seal)}
.ad{margin:8px 0;display:flex;flex-direction:column;gap:6px}
.ad-label{font-size:.7rem;line-height:1;color:var(--muted)}
.ad-box{height:250px;max-height:250px;overflow:hidden}
.ad-box ins.adsbygoogle{display:block;width:100%;height:250px}
.related{display:flex;flex-direction:column;gap:10px}
.related ul{margin:0;padding-left:1.2em;display:flex;flex-direction:column;gap:6px}
.related li span{color:var(--muted);font-size:.9rem}
.foot-links{display:flex;flex-wrap:wrap;gap:4px 16px;margin-top:6px}
.foot-links a{color:var(--muted)}
.foot-links a:hover{color:var(--seal)}
[hidden]{display:none!important}