/* ============================================================
   Construction Study Lab — 공유 디자인 시스템 (theme.css)
   출처: v1 MixLab 모듈 인라인 <style> (라이트 SaaS — Zillow/Remote 레퍼런스)
   원칙: 클래스명·토큰명은 v1 그대로 유지한다 (모듈 마크업 무수정).
   허브(site/index.html)와 모든 랩 모듈(site/labs/*/index.html)이
   <link rel="stylesheet" href=".../shared/theme.css"> 로 공유한다.
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }
:root {
  --bg:#ffffff; --surface:#f7f8fa; --surface2:#eef1f5; --border:#e4e7ec;
  --text:#141c2b; --muted:#5b6472; --faint:#98a1b0;
  --primary:#1b66f0; --primary-600:#1252cc; --primary-50:#eef4ff;
  --green:#12855f; --green-50:#e9f7f1; --amber:#b45309; --amber-50:#fdf3e3;
  --red:#d92d20; --red-50:#fdecea;
  --radius:12px; --radius-sm:8px;
  --shadow:0 1px 2px rgba(16,24,40,.05), 0 2px 8px rgba(16,24,40,.06);
  --font:'Inter',-apple-system,'Segoe UI',sans-serif;
}
html, body { margin:0; padding:0; background:var(--surface); color:var(--text);
  font-family:var(--font); font-size:15px; line-height:1.5; }
button { font-family:var(--font); }

/* 앱바 */
.appbar { position:sticky; top:0; z-index:20; background:var(--bg);
  border-bottom:1px solid var(--border); }
.appbar-inner { max-width:1100px; margin:0 auto; height:60px; padding:0 24px;
  display:flex; align-items:center; justify-content:space-between; }
.logo { font-weight:800; font-size:17px; letter-spacing:-.02em; display:flex; gap:8px; align-items:center; }
.logo .mark { color:var(--primary); font-size:20px; }

/* 레이아웃 */
main { max-width:1100px; margin:0 auto; padding:32px 24px 80px; }
.card { background:var(--bg); border:1px solid var(--border); border-radius:var(--radius);
  box-shadow:var(--shadow); padding:24px; }
h1 { font-size:26px; font-weight:800; letter-spacing:-.02em; margin:0 0 6px; }
h2 { font-size:18px; font-weight:700; letter-spacing:-.01em; margin:0 0 4px; }
.sub { color:var(--muted); margin:0 0 20px; }

/* 버튼 */
.btn { border:1px solid var(--border); background:var(--bg); color:var(--text);
  border-radius:var(--radius-sm); padding:10px 18px; font-size:14px; font-weight:600;
  cursor:pointer; transition:background .15s, border-color .15s; }
.btn:hover { background:var(--surface); }
.btn-primary { background:var(--primary); border-color:var(--primary); color:#fff; }
.btn-primary:hover { background:var(--primary-600); }
.btn-primary:disabled { background:#a8c4f5; border-color:#a8c4f5; cursor:not-allowed; }
.btn-ghost { border-color:transparent; background:transparent; color:var(--muted); }

/* 배지 */
.badge { display:inline-flex; align-items:center; gap:5px; border-radius:999px;
  font-size:12px; font-weight:600; padding:3px 10px; }
.badge-blue { background:var(--primary-50); color:var(--primary-600); }
.badge-green { background:var(--green-50); color:var(--green); }
.badge-amber { background:var(--amber-50); color:var(--amber); }
.badge-red { background:var(--red-50); color:var(--red); }

/* 미션/모듈 카드 그리드 — MixLab 미션 선택 화면과 허브의 랩 카드가 함께 사용 */
.mission-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(300px,1fr)); gap:16px; }
.mission-card { display:flex; flex-direction:column; gap:10px; cursor:pointer;
  transition:transform .15s, box-shadow .15s; }
.mission-card:hover { transform:translateY(-2px);
  box-shadow:0 4px 14px rgba(16,24,40,.10); }
.mission-card .icon { font-size:30px; }
.mission-card .meta { display:flex; flex-wrap:wrap; gap:6px; }
.mission-card .desc { color:var(--muted); font-size:13.5px; flex:1; }

/* 스텝퍼 (Zillow식) */
.stepper { display:flex; align-items:flex-start; margin:26px 0 22px; }
.step { flex:1; text-align:center; position:relative; }
.step .dot { width:26px; height:26px; border-radius:50%; margin:0 auto 6px;
  display:flex; align-items:center; justify-content:center; font-size:12px; font-weight:700;
  background:var(--surface2); color:var(--faint); border:2px solid var(--border); }
.step.done .dot { background:var(--primary); border-color:var(--primary); color:#fff; }
.step.current .dot { background:var(--bg); border-color:var(--primary); color:var(--primary); }
.step .lbl { font-size:11.5px; font-weight:600; color:var(--faint); overflow-wrap:anywhere; padding:0 2px; }
.step.current .lbl { color:var(--primary); }
.step.done .lbl { color:var(--muted); }
.step:not(:first-child)::before { content:''; position:absolute; top:12px; right:50%;
  left:-50%; height:2px; background:var(--border); z-index:-1; }
.step.done:not(:first-child)::before, .step.current:not(:first-child)::before { background:var(--primary); }

/* 위저드 2컬럼 */
.wizard-grid { display:grid; grid-template-columns:1fr 380px; gap:20px; align-items:start; }
.ref-panel { position:sticky; top:80px; display:flex; flex-direction:column; gap:14px; }
@media (max-width:900px){ .wizard-grid { grid-template-columns:1fr; } .ref-panel { position:static; } }

/* 위저드 하단 내비 */
.wiz-nav { display:flex; justify-content:space-between; margin-top:22px; }

/* 참고표 */
.ref-table { width:100%; border-collapse:collapse; font-size:12.5px; }
.ref-table caption { caption-side:top; text-align:left; font-size:12px; font-weight:700;
  color:var(--muted); text-transform:uppercase; letter-spacing:.04em; padding-bottom:8px; }
.ref-table th { font-size:11px; text-transform:uppercase; letter-spacing:.03em;
  color:var(--faint); font-weight:600; text-align:right; padding:6px 8px;
  border-bottom:1px solid var(--border); }
.ref-table th:first-child, .ref-table td:first-child { text-align:left; }
.ref-table td { padding:6px 8px; text-align:right; font-variant-numeric:tabular-nums;
  border-bottom:1px solid var(--surface2); }
.ref-table tbody tr:nth-child(odd) { background:var(--surface); }
.ref-table tbody tr:hover { background:var(--primary-50); }
.ref-note { font-size:12px; color:var(--faint); margin-top:8px; }

/* 숫자 입력 */
.num-field { margin:14px 0; }
.num-field label { display:block; font-size:13px; font-weight:600; margin-bottom:6px; }
.num-field .wrap { display:flex; align-items:center; border:1px solid var(--border);
  border-radius:var(--radius-sm); overflow:hidden; background:var(--bg); max-width:240px; }
.num-field .wrap:focus-within { border-color:var(--primary); box-shadow:0 0 0 3px var(--primary-50); }
.num-field input { border:0; outline:0; padding:10px 12px; font-size:15px; width:100%;
  text-align:right; font-variant-numeric:tabular-nums; font-family:var(--font); }
.num-field .unit { padding:0 12px; color:var(--faint); font-size:13px; white-space:nowrap;
  background:var(--surface); align-self:stretch; display:flex; align-items:center;
  border-left:1px solid var(--border); }
.num-field .hint { font-size:12.5px; color:var(--faint); margin-top:6px; }

/* 선택 카드 (NMAS 등) */
.choice-row { display:flex; gap:10px; flex-wrap:wrap; }
.choice { border:1.5px solid var(--border); border-radius:var(--radius-sm); background:var(--bg);
  padding:12px 18px; font-weight:600; font-size:14px; cursor:pointer; }
.choice.selected { border-color:var(--primary); background:var(--primary-50); color:var(--primary-600); }

/* 캔버스 무대 */
.canvas-stage { background:linear-gradient(180deg,#f4f7fb,#e8edf4);
  border:1px solid var(--border); border-radius:var(--radius); box-shadow:var(--shadow);
  display:block; width:100%; height:auto; }
.stage-actions { display:flex; justify-content:center; gap:12px; margin-top:18px; }

/* 결과 */
.score-row { display:grid; grid-template-columns:150px 1fr 90px; gap:14px; align-items:center;
  padding:12px 0; border-bottom:1px solid var(--surface2); }
.score-bar { height:8px; border-radius:4px; background:var(--surface2); overflow:hidden; }
.score-bar > div { height:100%; border-radius:4px; background:var(--primary); }
.grade-badge { width:92px; height:92px; border-radius:50%; display:flex; align-items:center;
  justify-content:center; font-size:42px; font-weight:800; color:#fff; }