:root{
  --bg:#f4f6fb; --card:#fff; --ink:#1e2433; --sub:#6b7488;
  --line:#e6e9f0; --brand:#5b6cff; --brand-d:#4453e6;
  --ok:#16a34a; --warn:#f59e0b; --crit:#ef4444;
  --radius:14px; --shadow:0 1px 3px rgba(20,30,60,.06),0 4px 18px rgba(20,30,60,.05);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:"Pretendard","Apple SD Gothic Neo",-apple-system,system-ui,sans-serif;font-size:14px;}

/* ── 상단 바 ── */
.topbar{display:flex;align-items:center;justify-content:space-between;
  background:#fff;padding:12px 22px;border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:20}
.brand{font-weight:800;font-size:17px}
.brand span{font-weight:500;color:var(--sub);font-size:12px;margin-left:6px}

/* ── KPI 스트립 ── */
.kpi-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
  padding:14px 22px;background:#fff;border-bottom:1px solid var(--line)}
.kpi{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px 18px;display:flex;flex-direction:column;gap:5px}
.kpi-label{font-size:12px;color:var(--sub)}
.kpi-val{font-size:24px;font-weight:800}
.kpi.ok .kpi-val{color:var(--ok)} .kpi.warn .kpi-val{color:var(--warn)} .kpi.crit .kpi-val{color:var(--crit)}

/* ── 탭 네비 ── */
.tab-nav{display:flex;background:#fff;border-bottom:2px solid var(--line);
  padding:0 22px;overflow-x:auto;position:sticky;top:49px;z-index:19}
.tab-btn{padding:12px 16px;border:none;background:none;cursor:pointer;
  font-weight:600;font-size:13px;color:var(--sub);white-space:nowrap;
  border-bottom:2px solid transparent;margin-bottom:-2px;
  transition:color .15s,border-color .15s}
.tab-btn:hover{color:var(--ink)}
.tab-btn.active{color:var(--brand);border-bottom-color:var(--brand)}
.tab-pane{display:none}
.tab-pane.active{display:block}

/* ── 메인 래퍼 ── */
.wrap{max-width:1200px;margin:0 auto;padding:22px}

/* ── 카드 ── */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;box-shadow:var(--shadow)}
.card h2{margin:0 0 14px;font-size:15px;font-weight:700}

/* ── 그리드 ── */
.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.weigh-layout{display:grid;grid-template-columns:1fr 2fr;gap:16px}

/* ── 버튼 ── */
.btn{background:var(--brand);color:#fff;border:none;padding:9px 18px;border-radius:9px;
  font-weight:600;cursor:pointer;font-size:13px;white-space:nowrap}
.btn:hover{background:var(--brand-d)}
.btn-ghost{background:#fff;border:1px solid var(--line);padding:8px 14px;border-radius:9px;
  cursor:pointer;font-weight:600;font-size:13px}
.btn-sm{padding:6px 12px;font-size:12px}
.btn-link{background:none;border:none;color:var(--brand);cursor:pointer;font-weight:600;
  font-size:13px;text-decoration:underline;padding:0}
.w100{width:100%}

/* ── 폼 ── */
select,input[type=text],input[type=number]{
  padding:8px 10px;border:1px solid var(--line);border-radius:9px;
  font-size:13px;background:#fff;color:var(--ink);font-family:inherit}
select{min-width:160px}
input:focus,select:focus{outline:2px solid var(--brand);border-color:var(--brand)}
.fgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.fgrid label{display:flex;flex-direction:column;gap:4px;font-size:13px;font-weight:600}
.det-block{border:1px solid var(--line);border-radius:10px;padding:12px 14px}
.det-block summary{cursor:pointer;user-select:none;padding:2px 0;font-size:13px}

/* ── 유틸 ── */
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.mt8{margin-top:8px}.mt10{margin-top:10px}.mt12{margin-top:12px}
.mt16{margin-top:16px}.mb8{margin-bottom:8px}.mb10{margin-bottom:10px}
.muted{color:var(--sub)}.tc{text-align:center}

/* ── 결과 박스 ── */
.result-box{border:1px solid var(--line);border-radius:11px;padding:14px;
  font-size:13px;line-height:1.6;background:#fafbff;min-height:60px}

/* ── 배지 ── */
.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700}
.badge.PASS{background:#dcfce7;color:#15803d}
.badge.REWORK{background:#fef3c7;color:#b45309}
.badge.FAIL{background:#fee2e2;color:#b91c1c}

/* ── 상태 태그 ── */
.stag{display:inline-block;padding:2px 8px;border-radius:20px;font-size:11px;font-weight:600;background:#f1f5f9;color:#475569}
.stag-WEIGHING{background:#fef3c7;color:#b45309}
.stag-PREDICTED{background:#dbeafe;color:#1e40af}
.stag-MIXED{background:#e0e7ff;color:#4338ca}
.stag-INSPECTED{background:#d1fae5;color:#065f46}
.stag-REWORK{background:#fee2e2;color:#b91c1c}
.stag-DONE{background:#f0fdf4;color:#166534}

/* ── 경고 목록 ── */
.warn-list{display:flex;flex-direction:column;gap:8px;max-height:300px;overflow:auto}
.warn-item{display:flex;justify-content:space-between;align-items:center;gap:10px;
  padding:10px 12px;border-radius:10px;border-left:4px solid var(--line)}
.warn-item.CRITICAL{background:#fef2f2;border-left-color:var(--crit)}
.warn-item.WARNING{background:#fffbeb;border-left-color:var(--warn)}
.warn-item.INFO{background:#f0f9ff;border-left-color:#0ea5e9}
.warn-msg{font-size:13px}
.warn-meta{font-size:11px;color:var(--sub)}
.ack-btn{font-size:11px;padding:4px 9px;border:1px solid var(--line);border-radius:7px;
  background:#fff;cursor:pointer;white-space:nowrap}

/* ── 테이블 ── */
.tbl-wrap{overflow-x:auto}
.tbl{width:100%;border-collapse:collapse;font-size:13px}
.tbl th{background:#f8f9fc;font-weight:700;color:#374151;padding:9px 11px;
  border-bottom:2px solid var(--line);white-space:nowrap}
.tbl td{padding:8px 11px;border-bottom:1px solid var(--line);vertical-align:middle}
.tbl tr:hover td{background:#f8faff}

/* ── 계근 입력 ── */
.weigh-input{padding:6px 8px;border:1px solid var(--line);border-radius:7px;font-size:13px;width:110px;text-align:right}
.weigh-input:focus{outline:2px solid var(--brand);border-color:var(--brand)}
.dev-ok{color:#16a34a;font-weight:700}
.dev-ng{color:#ef4444;font-weight:700}

/* ── 물성 라인 ── */
.prop-line{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px dashed var(--line)}

/* ── 시뮬레이션 테이블 ── */
table.sim{width:100%;border-collapse:collapse;font-size:13px;margin-top:8px}
table.sim th,table.sim td{padding:7px 9px;border-bottom:1px solid var(--line);text-align:right}
table.sim th:first-child,table.sim td:first-child{text-align:left}
.sim-up{color:var(--ok);font-weight:700}.sim-dn{color:var(--crit);font-weight:700}

/* ── 이력 조회 ── */
.hist-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:14px}
.hist-sec{background:#f8faff;border-radius:10px;padding:14px}
.hist-title{font-weight:700;font-size:13px;color:#374151;padding:0 0 8px;
  border-bottom:1px solid var(--line);margin-bottom:8px}

/* ── 반응형 ── */
@media(max-width:860px){
  .kpi-strip{grid-template-columns:repeat(2,1fr);padding:10px 14px}
  .grid{grid-template-columns:1fr}
  .weigh-layout{grid-template-columns:1fr}
  .weigh-layout .card[style]{grid-column:span 1!important}
  .fgrid{grid-template-columns:repeat(2,1fr)}
  .hist-grid{grid-template-columns:1fr}
}
@media(max-width:520px){
  .fgrid{grid-template-columns:1fr}
  .kpi-strip{grid-template-columns:repeat(2,1fr)}
}