:root{--bg:#f5f6f8;--fg:#1f2430;--mut:#6b7280;--card:#fff;--line:#d9dde4;--pri:#1d6fd6;--pri-d:#1757a8;--ok:#1a8a4a;--warn:#c26a00;--bad:#c62828;--gray:#cfd3da;--abs:#ffe3e3;--sw:#e7f1ff}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#14171c;--fg:#e6e9ef;--mut:#9aa3b2;--card:#1d2128;--line:#343b47;--pri:#5aa2ff;--pri-d:#8cbcff;--gray:#3a404b;--abs:#4a2326;--sw:#1f3350;color-scheme:dark}}
:root[data-theme=dark]{--bg:#14171c;--fg:#e6e9ef;--mut:#9aa3b2;--card:#1d2128;--line:#343b47;--pri:#5aa2ff;--pri-d:#8cbcff;--gray:#3a404b;--abs:#4a2326;--sw:#1f3350;color-scheme:dark}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.55 -apple-system,"Hiragino Sans","Noto Sans JP",Meiryo,sans-serif}
.top{padding:14px 16px 6px}.top h1{margin:0;font-size:20px}.sub{color:var(--mut);font-size:13px}
.tabs{display:flex;gap:4px;padding:0 12px;overflow-x:auto;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--bg);z-index:5}
.tabs button{border:0;background:none;padding:10px 12px;font-size:14px;color:var(--mut);cursor:pointer;white-space:nowrap;border-bottom:3px solid transparent}
.tabs button.on{color:var(--pri);border-color:var(--pri);font-weight:700}
main{padding:14px 16px 60px;max-width:1200px;margin:0 auto}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px;margin-bottom:14px}
.card h2{margin:0 0 10px;font-size:16px}.card h3{margin:12px 0 6px;font-size:14px}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end;margin:6px 0}
label{display:flex;flex-direction:column;font-size:12px;color:var(--mut);gap:3px}
label.inl{flex-direction:row;align-items:center;gap:5px;font-size:14px;color:var(--fg)}
input,select,textarea{font:inherit;padding:6px 8px;border:1px solid var(--line);border-radius:6px;background:var(--card);color:var(--fg)}
input[type=checkbox],input[type=radio]{padding:0}
input[type=number]{width:78px}
button.b{background:var(--pri);color:#fff;border:0;border-radius:7px;padding:8px 14px;font-size:14px;cursor:pointer}
button.b:hover{background:var(--pri-d)}button.b.sec{background:transparent;color:var(--pri);border:1px solid var(--pri)}
button.b.del{background:transparent;color:var(--bad);border:1px solid var(--bad);padding:3px 9px;font-size:12px}
button.b.sm{padding:4px 10px;font-size:13px}
.mut{color:var(--mut);font-size:13px}.warn{color:var(--warn)}.bad{color:var(--bad)}.ok{color:var(--ok)}
.chip{display:inline-block;padding:1px 8px;border-radius:99px;font-size:12px;background:var(--sw);margin:0 4px 2px 0}
.chip.a{background:var(--abs)}.chip.g{background:var(--gray)}
.item{border-top:1px dashed var(--line);padding:8px 0}.item:first-of-type{border-top:0}
.setter-cols{display:flex;gap:14px;flex-wrap:wrap;align-items:flex-start}
.setter-cols .scroll{flex:1 1 320px;min-width:260px}
.subj-list{display:flex;flex-wrap:wrap;gap:4px 14px;margin:6px 0}
.subj-item{display:flex;align-items:center;gap:4px;flex:1 1 210px;max-width:280px}
.subj-item label.inl{flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.toast{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);background:#222;color:#fff;padding:9px 16px;border-radius:8px;z-index:20;font-size:14px}
table{border-collapse:collapse;font-size:12px}
.scroll{overflow:auto;max-width:100%;border:1px solid var(--line);border-radius:8px}
th,td{border:1px solid var(--line);padding:3px 5px;vertical-align:top;min-width:72px;text-align:left}
th{background:var(--bg);position:sticky;top:0}
td.gray{background:var(--gray)}td.warnc{background:var(--abs)}
td.setcell{min-width:150px}
.bal{display:flex;align-items:center;gap:6px;margin:3px 0}
.bal .name{min-width:110px;font-size:13px}
.bal .bar{height:10px;background:var(--pri);border-radius:3px}
.bal .n{font-size:12px;color:var(--mut);min-width:24px;text-align:right}
.grid-sched input, .grid-sched select{width:100%;min-width:90px;font-size:12px;padding:3px 4px}
.sched-cell{display:flex;flex-direction:column;gap:2px}
.sched-cell .assigned{font-size:12px;font-weight:600}
.sched-cell .sub{font-size:11px;color:var(--mut)}
.sched-cell-h{flex-direction:row;align-items:center;flex-wrap:wrap}
.sched-cell-h select{width:auto;min-width:110px}
.sched-cell-h label.inl{white-space:nowrap}
.lockbtn{cursor:pointer;font-size:11px;border:1px solid var(--line);border-radius:4px;padding:0 4px;background:var(--card)}
.lockbtn.on{background:var(--sw);border-color:var(--pri)}
@media (max-width:640px){main{padding:10px}}