:root{
  --bg:#f3f4f6; --panel:#ffffff; --line:#d9dde3; --line2:#eceef2; --text:#1d2330; --muted:#6b7280;
  --primary:#2557d6; --primary-bg:#e8eefc;
  --acad:#1d4ed8; --acad-bg:#dbe6ff; --cond:#c2570a; --cond-bg:#ffe9d3;
  --boy:#2f6fe4; --girl:#d63f8c;
  --bad:#d92d20; --bad-bg:#fde8e7; --warn:#a86a00; --warn-bg:#fff4d6; --ok:#15803d; --ok-bg:#e2f5e8;
}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:"Pretendard","Apple SD Gothic Neo","Malgun Gothic","Noto Sans KR",system-ui,sans-serif;background:var(--bg);color:var(--text);font-size:15px;line-height:1.45}
button,input,select{font:inherit;color:inherit}
button{cursor:pointer;border:1px solid var(--line);background:#fff;border-radius:8px;padding:6px 12px}
button:hover:not(:disabled){border-color:#9aa3b2}
button:disabled{opacity:.45;cursor:default}
button.primary{background:var(--primary);border-color:var(--primary);color:#fff}
button.danger{color:var(--bad);border-color:#f2b8b3}
input[type=text],input[type=password],select{border:1px solid var(--line);border-radius:8px;padding:6px 8px;background:#fff}
.hidden{display:none!important}
h1,h2,h3,h4{margin:0}
.muted{color:var(--muted)}
.err{color:var(--bad);min-height:1.4em;margin-top:8px}

/* 상단 */
#topbar{display:flex;align-items:center;gap:16px;padding:10px 20px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
#topbar h1{font-size:19px}
#whoami{color:var(--muted)}
#topbar .sp{flex:1}
main{padding:16px 20px 60px}

/* 로그인 */
#loginView{display:flex;justify-content:center;padding-top:10vh}
.login-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px;width:min(380px,100%)}
.login-card h1{font-size:24px;margin-bottom:6px}
.login-card label{display:block;margin-top:14px;font-weight:600}
.login-card select,.login-card input{display:block;width:100%;margin-top:6px}
.login-card button{width:100%;margin-top:18px;padding:10px}

/* 탭 */
.tabs{display:flex;gap:6px;margin-bottom:14px;flex-wrap:wrap}
.tabs button{padding:8px 16px;font-weight:600}
.tabs button.on{background:var(--text);border-color:var(--text);color:#fff}

.panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:14px}
.panel h2{font-size:17px;margin-bottom:10px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.pill{font-size:13px;padding:2px 10px;border-radius:999px;font-weight:600}
.pill.ok{background:var(--ok-bg);color:var(--ok)}
.pill.bad{background:var(--bad-bg);color:var(--bad)}
.pill.warn{background:var(--warn-bg);color:var(--warn)}

table.grid{border-collapse:collapse;width:100%}
table.grid th,table.grid td{border-bottom:1px solid var(--line2);padding:6px 8px;text-align:center;white-space:nowrap}
table.grid th{background:#f8f9fb;font-weight:600;font-size:14px}
table.grid tr.total td{font-weight:700;background:#f8f9fb}
.tablewrap{overflow-x:auto}

/* 입력표 */
.ed-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.ed-head h2{font-size:20px}
.ed-head .sp{flex:1}
#saveState{color:var(--muted)}
#saveState.dirty{color:var(--warn);font-weight:600}
.banner{padding:10px 14px;border-radius:10px;margin-bottom:10px;font-weight:600}
.banner.locked{background:var(--warn-bg);color:var(--warn)}
.legend{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.legend span{padding:4px 10px;border-radius:8px;font-weight:600}
.legend .a{background:var(--acad-bg);color:var(--acad)}
.legend .c{background:var(--cond-bg);color:var(--cond)}
.summary{margin-bottom:10px;display:flex;gap:10px;flex-wrap:wrap;align-items:center}
table.ed{border-collapse:collapse;background:#fff;width:100%}
table.ed th,table.ed td{border-bottom:1px solid var(--line2);padding:5px 6px;text-align:center;white-space:nowrap}
table.ed th{position:sticky;top:57px;background:#f8f9fb;font-size:13px;z-index:5}
table.ed th.a{color:var(--acad)} table.ed th.c{color:var(--cond)}
table.ed td.nm{text-align:left;font-weight:600}
table.ed tr.incomplete td:first-child{box-shadow:inset 4px 0 0 var(--warn)}
table.ed select.dup{border-color:var(--bad);background:var(--bad-bg)}
.g-M{color:var(--boy);font-weight:600} .g-F{color:var(--girl);font-weight:600}
.lv{display:inline-flex;border-radius:8px;overflow:hidden;border:1px solid var(--line)}
.lv button{border:0;border-radius:0;padding:4px 9px;background:#fff;min-width:30px}
.lv button+button{border-left:1px solid var(--line)}
.lv-acad button.on{background:var(--acad);color:#fff}
.lv-cond button.on{background:var(--cond);color:#fff}
table.ed input[type=checkbox]{width:18px;height:18px}
table.ed input.memo{width:220px}
button.rel{font-size:13px;padding:4px 8px}
.groups{margin-top:18px}
.groups h3{font-size:17px;margin-bottom:8px}
.group{background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px;margin-bottom:8px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;gap:4px;background:#eef1f5;border-radius:999px;padding:3px 4px 3px 10px;font-size:14px}
.chip button{border:0;background:transparent;padding:0 6px;color:var(--muted)}

/* 모달 */
.modal{position:fixed;inset:0;background:rgba(15,20,30,.45);display:flex;align-items:flex-start;justify-content:center;padding:6vh 16px;z-index:50;overflow:auto}
.modal-box{background:#fff;border-radius:14px;padding:20px;width:min(640px,100%)}
.modal-box h3{font-size:18px;margin-bottom:12px}
.modal-box h4{font-size:15px;margin:16px 0 6px}
.addrow{display:flex;gap:6px;flex-wrap:wrap}
.addrow input{flex:1;min-width:200px}
.rellist{display:flex;flex-direction:column;gap:6px}
.relitem{display:flex;gap:8px;align-items:center;padding:6px 10px;background:#f6f7f9;border-radius:8px}
.relitem .sp{flex:1}
.modal-foot{margin-top:18px;text-align:right}

/* 반편성 */
.toolbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;margin-bottom:10px}
.toolbar .sp{flex:1}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.seg button{border:0;border-radius:0;font-weight:600}
.seg button.on{background:var(--text);color:#fff}
.dirtyflag{color:var(--warn);font-weight:600}
details.weights{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 14px;margin-bottom:10px}
details.weights summary{cursor:pointer;font-weight:600}
.wgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:8px 18px;margin-top:10px}
.wgrid label{display:flex;align-items:center;gap:8px}
.wgrid label span.n{flex:1}
.wgrid input[type=range]{width:120px}
.note{color:var(--muted);margin:0 0 10px}
.board{display:grid;gap:8px;overflow-x:auto;padding-bottom:6px}
.col{background:#fff;border:1px solid var(--line);border-radius:12px;min-width:185px;display:flex;flex-direction:column;container-type:inline-size}
.col.over{outline:3px solid var(--primary);outline-offset:-2px}
.col.unassigned{background:var(--bad-bg)}
.col-head{padding:8px 10px;border-bottom:1px solid var(--line);font-size:13px}
.col-head .cname{font-size:20px;font-weight:800;display:flex;justify-content:space-between;align-items:baseline}
.col-head .cname b{font-size:16px}
.col-head .cname b.bad{color:var(--bad)}
.col-head .cs{color:var(--muted);margin-top:2px}
.col-head .cs .a{color:var(--acad);font-weight:600}
.col-head .cs .c{color:var(--cond);font-weight:600}
.col-body{padding:6px;display:flex;flex-direction:column;gap:4px;min-height:60px;flex:1}
.card{display:flex;align-items:center;gap:4px;padding:4px 5px;border:1px solid var(--line);border-left:5px solid var(--boy);border-radius:7px;background:#fff;cursor:grab;font-size:15px;user-select:none}
.card.F{border-left-color:var(--girl)}
.card.hard{outline:2.5px solid var(--bad);outline-offset:-1px;background:var(--bad-bg)}
.card.warn{outline:2.5px solid #e0a100;outline-offset:-1px;background:var(--warn-bg)}
.card.dragging{opacity:.4}
.card.drop{box-shadow:0 0 0 3px var(--primary)}
.card .nm{font-weight:700;white-space:nowrap}
.card .pv{color:var(--muted);font-size:12px;white-space:nowrap}
.card .sp{flex:1;min-width:0}
.card .lvA,.card .lvC{font-size:12px;font-weight:700;border-radius:5px;padding:0 5px;min-width:18px;text-align:center}
.card .lvA{background:var(--acad-bg);color:var(--acad)}
.card .lvC{background:var(--cond-bg);color:var(--cond)}
.card .lvC.hi{background:var(--cond);color:#fff}
.card .tg{font-size:12px;color:#4b5563;white-space:nowrap;min-width:0;overflow:hidden}
.card .lock{border:0;background:transparent;padding:0 2px;font-size:13px;opacity:.25}
.card .lock.on{opacity:1}
.report{display:grid;grid-template-columns:minmax(0,3fr) minmax(280px,2fr);gap:12px;margin-top:12px;align-items:start}
@media (max-width:1100px){.report{grid-template-columns:1fr}}
.issues{display:flex;flex-direction:column;gap:5px;max-height:420px;overflow:auto}
.issue{padding:6px 10px;border-radius:8px;font-size:14px}
.issue.hard{background:var(--bad-bg);color:var(--bad)}
.issue.warn{background:var(--warn-bg);color:var(--warn)}
.loglist{max-height:220px;overflow:auto;font-size:14px;margin:0;padding-left:18px}
.empty{background:#fff;border:1px dashed var(--line);border-radius:12px;padding:40px;text-align:center;color:var(--muted)}

/* 대형 TV */
@media (min-width:1800px){
  body{font-size:17px}
  .card{font-size:18px;padding:5px 8px}
  .card .lvA,.card .lvC,.card .tg,.card .pv{font-size:14px}
  .col-head{font-size:15px}
  .col-head .cname{font-size:24px}
}

@container (max-width:230px){
  .card{font-size:14px;gap:2px;padding:3px 3px 3px 4px}
  .card .pv{font-size:11px}
  .card .lvA,.card .lvC{padding:0 3px;min-width:15px}
  .card .lock{padding:0}
}
.busy{position:fixed;inset:0;background:rgba(255,255,255,.7);display:flex;align-items:center;justify-content:center;z-index:60;font-size:22px;font-weight:700}
#toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#1d2330;color:#fff;padding:10px 18px;border-radius:10px;opacity:0;transition:opacity .2s;pointer-events:none;z-index:70}
#toast.show{opacity:1}

/* 설정 오류 경고 띠 */
.setup-error{position:sticky;top:0;z-index:80;background:var(--bad);color:#fff;font-weight:700;font-size:17px;padding:14px 20px;line-height:1.5}
#teacherView .toolbar label{font-weight:600}
details.rubric{background:var(--cond-bg);border-radius:10px;padding:8px 12px;margin-bottom:10px}
details.rubric summary{cursor:pointer;font-weight:700;color:var(--cond)}
details.rubric table{border-collapse:collapse;margin-top:6px}
details.rubric td{padding:3px 8px;vertical-align:top}
details.rubric td.rn{font-weight:800;color:var(--cond);width:28px;text-align:center}

/* 반별 등수 배지: 1~5등 진하게, 22등~ 옅게 */
.card .rk{font-size:13px;font-weight:800;min-width:38px;text-align:center;border-radius:6px;padding:0 4px;background:#eef1f5;color:var(--text)}
.card .rk.top{background:var(--text);color:#fff}
.card .rk.bot{background:transparent;color:var(--muted);border:1px solid var(--line)}
@container (max-width:230px){ .card .rk{font-size:12px;min-width:32px;padding:0 2px} }
@media (min-width:1800px){ .card .rk{font-size:15px} }