/* 리드테마 — 물타기·평단가 계산기
   디자인 시스템: Ink #293237 / Navy #1B2440 / Teal #12A99B·#0E8478
   상승 #DE2F26 · 보합 #8A959B · 하락 #1A6CCC (국내 관례)

   모바일이 PC 의 2.4 배입니다 (물타기계산기 모바일 18,200 / PC 7,600).
   그래서 모바일 폭을 기준으로 짜고 넓은 화면에서 두 칸으로 벌립니다. */

.rdtc{
  --c-ink:#293237; --c-navy:#1B2440; --c-teal:#12A99B; --c-teal-d:#0E8478;
  --c-recess:#F2F5F6; --c-line:#D5DDE0; --c-muted:#6B7780; --c-paper:#FFFFFF;
  --c-up:#DE2F26; --c-flat:#8A959B; --c-down:#1A6CCC;
  --c-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --c-sans:"IBM Plex Sans KR",system-ui,-apple-system,"Apple SD Gothic Neo",sans-serif;
  box-sizing:border-box;
  font-family:var(--c-sans);
  color:var(--c-ink);
  word-break:keep-all; overflow-wrap:break-word;
  font-size:15px; line-height:1.6;
  max-width:760px;
}
.rdtc *{box-sizing:border-box}
/* 테마가 붙이는 여백만 걷어냅니다. :where() 는 특이도가 0 이라
   아래 규칙들이 그대로 살아납니다. */
.rdtc :where(p,ul,ol,li,h2,h3,h4,dl,dt,dd,table,label){margin:0;padding:0}
.rdtc :where(ul,ol){list-style:none}

/* ── 머리 ─────────────────────────────────────── */
.rdtc__hd{margin-bottom:14px}
.rdtc__t{
  font-size:21px;font-weight:700;letter-spacing:-.02em;
  color:var(--c-navy);margin-bottom:5px!important;
}
.rdtc__sub{font-size:13.5px;color:var(--c-muted);line-height:1.55}

/* ── 카드 ─────────────────────────────────────── */
.rdtc__card{
  background:var(--c-paper);
  border:1px solid var(--c-line);border-radius:10px;
  padding:15px 15px 13px;margin-bottom:12px;
}
.rdtc__ct{
  font-size:13px;font-weight:700;color:var(--c-navy);
  letter-spacing:-.01em;margin-bottom:10px!important;
  display:flex;align-items:baseline;gap:8px;
}
.rdtc__ct em{font-style:normal;font-weight:500;font-size:11.5px;color:var(--c-muted)}

/* ── 매수 행 ───────────────────────────────────
   모바일: 라벨 한 줄 + 입력 두 칸. 삭제는 오른쪽 끝. */
.rdtc__rows{display:grid;gap:9px}
.rdtc__row{
  display:grid;
  grid-template-columns:44px minmax(0,1fr) minmax(0,1fr) 30px;
  gap:7px;align-items:center;
}
.rdtc__no{
  font-size:11.5px;color:var(--c-muted);font-family:var(--c-mono);
  white-space:nowrap;
}
.rdtc__row--head .rdtc__no{visibility:hidden}
.rdtc__lbl{
  font-size:11px;color:var(--c-muted);font-weight:500;
  padding-left:2px;
}
.rdtc__f{position:relative}
.rdtc__f input{
  width:100%;height:44px;
  border:1px solid var(--c-line);border-radius:8px;
  background:var(--c-paper);
  padding:0 30px 0 11px;
  font-family:var(--c-mono);font-size:15px;font-weight:500;
  color:var(--c-ink);text-align:right;
  font-variant-numeric:tabular-nums;
  -moz-appearance:textfield;
}
.rdtc__f input::-webkit-outer-spin-button,
.rdtc__f input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.rdtc__f input:focus{
  outline:none;border-color:var(--c-teal);
  box-shadow:0 0 0 3px rgba(18,169,155,.14);
}
.rdtc__f input::placeholder{color:#B6C0C5;font-weight:400}
.rdtc__u{
  position:absolute;right:9px;top:50%;transform:translateY(-50%);
  font-size:11.5px;color:var(--c-muted);pointer-events:none;
}
.rdtc__del{
  width:30px;height:30px;padding:0;
  border:none;background:none;cursor:pointer;
  color:#B6C0C5;font-size:17px;line-height:1;
  border-radius:6px;
}
.rdtc__del:hover{color:var(--c-up);background:var(--c-recess)}
.rdtc__del:focus-visible{outline:2px solid var(--c-teal);outline-offset:1px}
.rdtc__row--first .rdtc__del{visibility:hidden;pointer-events:none}

.rdtc__add{
  margin-top:10px;width:100%;height:40px;
  border:1px dashed var(--c-line);border-radius:8px;
  background:var(--c-paper);cursor:pointer;
  font-family:var(--c-sans);font-size:13px;font-weight:500;
  color:var(--c-teal-d);
}
.rdtc__add:hover{border-color:var(--c-teal);background:#F4FBFA}
.rdtc__add:focus-visible{outline:2px solid var(--c-teal);outline-offset:1px}

/* ── 현재가 한 줄 ─────────────────────────────── */
.rdtc__now{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:7px;align-items:center;
}
.rdtc__now .rdtc__lbl{align-self:end}
.rdtc__now--solo{grid-template-columns:minmax(0,1fr)}

/* ── 결과 ─────────────────────────────────────── */
.rdtc__out{
  background:var(--c-navy);border:1px solid var(--c-navy);
  border-radius:10px;padding:16px 16px 13px;margin-bottom:12px;
  color:#E7ECF2;
}
.rdtc__big{
  display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;
  padding-bottom:12px;border-bottom:1px solid #33405E;margin-bottom:11px!important;
}
.rdtc__big dt{font-size:13.5px;color:#9AA6B8;font-weight:500}
.rdtc__big dd{
  margin-left:auto!important;
  font-family:var(--c-mono);font-size:27px;font-weight:700;
  color:#FFFFFF;font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.rdtc__list{display:grid;gap:1px}
.rdtc__li{
  display:flex;align-items:baseline;gap:10px;
  padding:6px 0;font-size:13px;
}
.rdtc__li dt{font-size:14px;color:#9AA6B8}
.rdtc__li dd{
  margin-left:auto!important;
  font-family:var(--c-mono);font-size:14px;font-weight:600;
  color:#E7ECF2;font-variant-numeric:tabular-nums;white-space:nowrap;
}
.rdtc__li dd.up{color:#FF8A82}
.rdtc__li dd.dn{color:#7FB3F0}
.rdtc__li dd.fl{color:#AEB8C4}
.rdtc__hint{
  margin-top:11px!important;padding-top:9px;border-top:1px solid #33405E;
  font-size:11.5px;line-height:1.6;color:#8894A8;
}

/* ── 목표 평단 역산 ───────────────────────────── */
.rdtc__ans{
  margin-top:11px;padding:11px 12px;
  background:var(--c-recess);border-radius:8px;
  font-size:13.5px;line-height:1.6;color:var(--c-ink);
}
.rdtc__ans b{
  font-family:var(--c-mono);font-weight:700;color:var(--c-teal-d);
  font-variant-numeric:tabular-nums;
}
.rdtc__ans--no{color:var(--c-muted);font-size:12.5px}

/* ── 설명 ─────────────────────────────────────── */
.rdtc__doc{margin-top:18px}
.rdtc__doc h3{
  font-size:15px;font-weight:700;color:var(--c-navy);
  margin:0 0 7px!important;
}
.rdtc__doc h4{
  font-size:13.5px;font-weight:700;color:var(--c-ink);
  margin:14px 0 4px!important;
}
.rdtc__doc p{font-size:13.5px;line-height:1.75;color:#414B52;margin:0 0 6px!important}
.rdtc__eq{
  display:block;margin:8px 0!important;padding:11px 12px;
  background:var(--c-recess);border-radius:8px;
  font-family:var(--c-mono);font-size:12px;line-height:1.75;
  color:var(--c-ink);
  white-space:pre-wrap;word-break:keep-all;overflow-wrap:anywhere;
}
.rdtc__foot{
  margin-top:14px!important;padding-top:10px;
  border-top:1px solid var(--c-line);
  font-size:11.5px;line-height:1.65;color:var(--c-muted);
}

/* ── 넓은 화면 ───────────────────────────────── */
@media (min-width:620px){
  .rdtc{font-size:15.5px}
  .rdtc__t{font-size:24px}
  .rdtc__row{grid-template-columns:52px minmax(0,1fr) minmax(0,1fr) 34px;gap:9px}
  .rdtc__card{padding:17px 18px 15px}
  .rdtc__out{padding:18px 18px 15px}
  .rdtc__big dd{font-size:31px}
  .rdtc__now{grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,1fr)}
  .rdtc__now--solo{grid-template-columns:minmax(0,240px)}
  .rdtc__eq{font-size:12.5px}
}