:root{--navy:#1f2a44;--or:#f7931e;--line:#e3e6ec;--bg:#f5f6f9;--tx:#222b3a;--mut:#7a8496;--ok:#1e9e62;--wait:#2f6fdb;--bad:#d9453c}
*{box-sizing:border-box}
body{margin:0;font-family:"Pretendard","Malgun Gothic",system-ui,sans-serif;color:var(--tx);background:var(--bg);font-size:15px}
[hidden]{display:none!important}
a{color:var(--wait)}

/* 틀 — 왼쪽 메뉴 + 본문 */
.wrap{display:grid;grid-template-columns:200px minmax(0,1fr);min-height:100vh}
aside{background:var(--navy);color:#cfd6e6;padding:18px 0;display:flex;flex-direction:column}
aside .logo{color:#fff;font-weight:800;font-size:17px;padding:0 20px 16px}
aside .logo small{display:block;font-weight:400;font-size:12px;color:#9aa6c0;margin-top:2px}
aside nav a{display:block;padding:11px 20px;color:inherit;text-decoration:none;border-left:4px solid transparent}
aside nav a.on{background:#2b3960;color:#fff;border-left-color:var(--or);font-weight:700}
aside nav span.soon{display:block;padding:11px 20px;color:#6f7a96;border-left:4px solid transparent}
aside nav span.soon small{font-size:11px;margin-left:4px}
aside .who{margin-top:24px;padding:14px 20px;border-top:1px solid #33416a;font-size:13px;color:#9aa6c0;line-height:1.7}
aside .who b{color:#fff;font-weight:600}
aside .who a{color:#cfd6e6;display:inline-block;margin-right:10px;cursor:pointer;text-decoration:underline}
main{padding:22px 26px 60px;min-width:0}

h1{font-size:22px;margin:0 0 4px}
h2{font-size:16px;margin:18px 0 8px}
.sub{color:var(--mut);margin:0 0 16px;font-size:14px}
.head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;flex-wrap:wrap}
.acts{display:flex;gap:8px;flex-wrap:wrap}
.note{color:var(--mut);font-size:13px;margin-top:12px;line-height:1.6}
.err{color:var(--bad);font-size:14px;margin:8px 0 0;min-height:1.2em}
.warn{background:#fff7e8;border:1px solid #f3d49a;color:#8a5a00;border-radius:8px;padding:8px 12px;font-size:13.5px;margin-bottom:12px;line-height:1.6}

.btn{font:inherit;border:1px solid var(--line);background:#fff;border-radius:8px;padding:9px 14px;cursor:pointer;color:var(--tx);white-space:nowrap}
.btn:disabled{opacity:.5;cursor:default}
.btn.pri{background:var(--navy);border-color:var(--navy);color:#fff;font-weight:700}
.btn.or{background:var(--or);border-color:var(--or);color:#fff;font-weight:700}
.btn.sm{padding:4px 9px;font-size:12.5px;color:var(--mut)}
.chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 14px;cursor:pointer;font:inherit;color:var(--tx)}
.chip.on{background:var(--navy);border-color:var(--navy);color:#fff;font-weight:700}
select,input[type=search],input[type=text],input[type=password],input[type=tel],input[type=date],textarea{font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--tx)}
input[type=search]{min-width:200px}
textarea{width:100%;min-height:74px;resize:vertical}

.box{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-bottom:14px}
.step{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.step:last-child{margin-bottom:0}
.step b.n{flex:none;width:52px;font-size:13px;color:var(--mut)}
.sum{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-bottom:14px}
.sum>div{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.sum span{display:block;font-size:12.5px;color:var(--mut)}
.sum span.u{display:inline}
.sum b{font-size:22px}

table.list{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
table.list th,table.list td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
table.list th{background:#f0f2f7;font-size:13px;color:#566078;white-space:nowrap}
table.list tr:last-child td{border-bottom:0}
table.list tbody tr[data-id]{cursor:pointer}
table.list tbody tr[data-id]:hover{background:#fafbfd}
td.no{width:36px;color:var(--mut);text-align:center}
td.nm b{font-size:15.5px}
td small{display:block;color:var(--mut);font-size:12.5px}
td.empty{text-align:center;color:var(--mut);padding:30px}
.tag{display:inline-block;background:#eef1f7;color:#3d4a66;border-radius:6px;padding:3px 8px;font-size:12.5px;margin:2px 4px 2px 0;white-space:nowrap}
.tag.solo{background:#fff1d9;color:#a86400}
.st{display:inline-block;border-radius:999px;padding:3px 10px;font-size:12.5px;font-weight:700;white-space:nowrap}
.st.in{background:#dff5ea;color:var(--ok)}.st.rest{background:#fff1d9;color:#a86400}.st.out{background:#eef0f4;color:#7a8496}
.st.new{background:#e4edfd;color:var(--wait)}.st.chg{background:#fff1d9;color:#a86400}.st.ask{background:#eef0f4;color:#566078}

/* 옆에서 열리는 학생 정보 · 가운데 뜨는 창 */
.dim{position:fixed;inset:0;background:rgba(20,28,48,.45);z-index:5}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(480px,100vw);background:#fff;z-index:6;overflow-y:auto;padding:20px 22px 40px;box-shadow:-8px 0 24px rgba(0,0,0,.12)}
.modal{position:fixed;left:50%;top:50%;transform:translate(-50%,-50%);width:min(680px,94vw);max-height:90vh;overflow-y:auto;background:#fff;border-radius:14px;z-index:8;padding:20px 22px;box-shadow:0 12px 40px rgba(0,0,0,.25)}
.modal.narrow{width:min(460px,94vw)}
.dim.top{z-index:7}
.x{float:right;border:0;background:none;font-size:22px;cursor:pointer;color:var(--mut);line-height:1}
dl.info{display:grid;grid-template-columns:96px minmax(0,1fr);gap:8px 10px;margin:0}
dl.info dt{color:var(--mut);font-size:13px;padding-top:2px}
dl.info dd{margin:0}
dl.info small{color:var(--mut);font-size:12.5px;display:block}
.gd{border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin-bottom:8px;display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.gd label{font-size:13.5px;white-space:nowrap;cursor:pointer}
.gd .r{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.foot{display:flex;justify-content:flex-end;gap:8px;margin-top:16px;flex-wrap:wrap}
.field{display:block;margin-bottom:10px}
.field>span{display:block;font-size:13px;color:var(--mut);margin-bottom:4px}
.field input,.field select{width:100%}
.checks label{display:block;padding:5px 0;cursor:pointer}
.chgrow{display:flex;gap:10px;align-items:flex-start;padding:10px 0;border-bottom:1px solid var(--line)}
.chgrow:last-child{border-bottom:0}
.chgrow input{margin-top:4px}
.chgrow .w{flex:1;min-width:0;font-size:13.5px;line-height:1.5}
.chgrow .w b{font-size:15px}
.hist{font-size:13px;line-height:1.6;color:#4a556b;margin:0;padding:0;list-style:none}
.hist li{padding:6px 0;border-bottom:1px solid var(--line)}
.hist li:last-child{border-bottom:0}
.hist time{color:var(--mut);font-size:12px;display:block}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--navy);color:#fff;padding:12px 18px;border-radius:10px;font-size:14px;opacity:0;transition:.25s;pointer-events:none;max-width:90vw;z-index:9}
.toast.on{opacity:1}

/* 로그인 · 처음 설정 · 비밀번호 */
.center{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 26px 22px;width:min(380px,100%)}
.card h1{margin-bottom:2px}
.card .btn{width:100%;margin-top:6px;padding:11px}

@media (max-width:820px){
  .wrap{grid-template-columns:1fr;grid-template-rows:auto 1fr}
  aside{flex-direction:row;overflow-x:auto;padding:0;align-items:center}
  aside .logo{padding:12px 14px;white-space:nowrap} aside .logo small{display:none}
  aside nav{display:flex}
  aside nav a,aside nav span.soon{white-space:nowrap;border-left:0;border-bottom:3px solid transparent;padding:12px}
  aside nav a.on{border-bottom-color:var(--or)}
  aside .who{margin:0;border:0;padding:0 14px;white-space:nowrap} aside .who .me{display:none}
  main{padding:14px 12px 60px} .sum{grid-template-columns:repeat(2,minmax(0,1fr))}
  input[type=search]{min-width:0;flex:1}
  table.list,table.list tbody,table.list tr,table.list td{display:block;width:100%} table.list thead{display:none}
  table.list tr{border-bottom:8px solid var(--bg);padding:8px 4px} table.list td{border:0;padding:4px 10px}
  table.list td.no{display:none} td[data-l]::before{content:attr(data-l);display:block;font-size:12px;color:var(--mut);margin-bottom:2px}
}

/* 자료 올리기 */
.drop{border:2px dashed #c5cbd8;border-radius:12px;padding:16px;text-align:center;color:var(--mut);background:#fbfcfe;cursor:pointer;margin-bottom:12px;line-height:1.6}
.drop.over{border-color:var(--or);background:#fff7e8;color:#8a5a00}
.drop b{color:var(--tx);font-size:16px}
.tools{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin:4px 0 10px}
.tools label{font-size:14px;color:var(--mut);cursor:pointer}
.sum .bar{height:6px;background:#eceef3;border-radius:3px;margin-top:8px;overflow:hidden}
.sum .bar i{display:block;height:100%;background:var(--or)}
.cell{display:flex;align-items:center;gap:8px;min-height:44px;border:1.5px dashed #cdd3df;border-radius:10px;padding:6px 10px;cursor:pointer;color:var(--mut);background:#fbfcfe}
.cell:hover,.cell.over{border-color:var(--or);background:#fff7e8}
.cell.has{border-style:solid;border-color:var(--line);background:#fff;color:var(--tx)}
.cell.busy{opacity:.6;pointer-events:none}
.cell .t{flex:1;min-width:0;font-size:13.5px;line-height:1.3}
.cell .t small{display:block;color:var(--mut);font-size:12px}
.thumb{flex:none;width:30px;height:38px;border-radius:4px;background:linear-gradient(#e9edf5,#d6dceb);border:1px solid #c5cbd8;position:relative}
.thumb::after{content:"";position:absolute;left:5px;right:5px;top:8px;height:2px;background:#aab3c7;box-shadow:0 6px #aab3c7,0 12px #aab3c7,0 18px #aab3c7}
.st.none{background:#eef0f4;color:#7a8496}.st.uploaded,.st.reading{background:#fff1d9;color:#a86400}.st.wait{background:#e4edfd;color:var(--wait)}
.st.ok{background:#dff5ea;color:var(--ok)}.st.bad{background:#fde6e4;color:var(--bad)}
input.sc{width:64px;font:inherit;padding:7px 8px;border:1px solid var(--line);border-radius:8px;text-align:right}
.flist{list-style:none;margin:0;padding:0}
.flist li{display:flex;align-items:center;gap:10px;padding:9px 0;border-bottom:1px solid var(--line)}
.flist li:last-child{border-bottom:0}
.flist .nm{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.flist small{color:var(--mut)}

/* 확인하기 — 왼쪽 원본, 오른쪽 성적 */
.work{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px;align-items:start}
.viewer{position:sticky;top:10px;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;height:calc(100vh - 20px)}
.viewer .bar{display:flex;gap:6px;align-items:center;flex-wrap:wrap;padding:8px 10px;border-bottom:1px solid var(--line);background:#f7f8fb}
.viewer .bar .sp{flex:1}
.viewer .pg{border:1px solid var(--line);background:#fff;border-radius:6px;padding:4px 9px;cursor:pointer;font:inherit;font-size:13px}
.viewer .pg.on{background:var(--navy);border-color:var(--navy);color:#fff;font-weight:700}
.viewer .pg.paper{border-style:dashed}
.viewer .view{flex:1;overflow:auto;background:#eef0f4;text-align:center}
.viewer .view img{max-width:none;transform-origin:top left;display:block}
.viewer .view iframe{width:100%;height:100%;border:0;display:block}
.viewer .view p{color:var(--mut);padding:40px 20px}
.subj{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin-bottom:10px}
.subj.done{background:#fbfcfe}
.grid{display:grid;gap:8px;margin-bottom:8px}
.grid.g1{grid-template-columns:minmax(0,3fr) 64px minmax(0,1.2fr) minmax(0,1.6fr) auto}
.grid.g2{grid-template-columns:repeat(5,minmax(0,1fr))}
.grid.g3{grid-template-columns:repeat(8,minmax(0,1fr))}
.grid.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid label{display:block;min-width:0}
.grid label span{display:block;font-size:11.5px;color:var(--mut);margin-bottom:2px;white-space:nowrap}
.grid input,.grid select,.items input,.items select{width:100%;padding:6px 7px;font-size:14px;min-width:0}
.grid input.n,.items input.n{text-align:right}
.subj details{margin:2px 0 8px}
.subj summary{cursor:pointer;font-size:13px;color:var(--mut);margin-bottom:6px}
table.items{width:100%;border-collapse:collapse;margin-top:4px}
table.items th{font-size:11.5px;color:var(--mut);font-weight:400;text-align:left;padding:0 3px 2px}
table.items td{padding:2px 3px}
table.items td:first-child{width:92px} table.items td.w{width:64px} table.items td.x{width:28px}
.xbtn{border:0;background:none;color:var(--mut);cursor:pointer;font-size:17px;line-height:1;padding:4px}
.xbtn:hover{color:var(--bad)}
.savebar{position:sticky;bottom:0;background:rgba(245,246,249,.96);padding:10px 0;display:flex;gap:8px;justify-content:flex-end;flex-wrap:wrap;border-top:1px solid var(--line);margin-top:10px}
.savebar .sp{flex:1}
@media (max-width:1000px){ .work{grid-template-columns:1fr} .viewer{position:static;height:70vh} .grid.g3{grid-template-columns:repeat(4,minmax(0,1fr))} }
@media (max-width:820px){ .grid.g1{grid-template-columns:1fr 1fr} .grid.g2{grid-template-columns:repeat(3,minmax(0,1fr))} }
p.chk{margin:5px 0 0;font-size:13px;line-height:1.5;min-height:0}
p.chk .ok{color:var(--ok);font-weight:600} p.chk .bad{color:var(--bad);font-weight:600} p.chk .hint{color:#8a5a00;background:#fff7e8;border-radius:4px;padding:1px 6px}