:root{color-scheme:light dark;--surface:light-dark(#ffffff,#22252b);--canvas:light-dark(#f0f2f6,#121418);--panel:light-dark(#f7f8fb,#1a1c22);--ink:light-dark(#202c3d,#edf1f9);--quiet:light-dark(#697688,#b3bdcb);--line:light-dark(#e1e5ec,#393f49);--selected:light-dark(#e9efff,#303d61);--blue:light-dark(#345bd0,#9db4ff);--on-blue:light-dark(#ffffff,#182440);--red:light-dark(#c62828,#ff8a80);--red-bg:light-dark(#fdecec,#4a2224);--amber:light-dark(#b45309,#f3c27a);--amber-bg:light-dark(#fff4e0,#3f3220);--green:light-dark(#1f7a4d,#86d7a9)}
*{box-sizing:border-box}
body{margin:0;background:var(--canvas);color:var(--ink);font:14px 'Segoe UI','Malgun Gothic',sans-serif}
[hidden]{display:none!important}
button,input,select,textarea{font:inherit;color:inherit}
button,.file-button{padding:9px 14px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink);cursor:pointer;white-space:nowrap;display:inline-flex;align-items:center;gap:6px}
button:hover,.file-button:hover{border-color:var(--quiet)}
button:disabled{opacity:.45;cursor:wait}
button.primary{background:var(--blue);border-color:var(--blue);color:var(--on-blue);font-weight:600}
button.danger{color:var(--red)}
input,textarea{width:100%;border:1px solid var(--line);border-radius:6px;padding:8px 9px;background:var(--surface)}
input:focus-visible,textarea:focus-visible,button:focus-visible,.file-button:focus-within{outline:2px solid var(--blue);outline-offset:1px}
.hint{font-size:12px;color:var(--quiet);line-height:1.6;margin:8px 0}
#admin-app{max-width:1680px;margin:auto;padding:0 16px 96px}
.bar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:14px 0;background:var(--canvas)}
.brand{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}.brand h1{font-size:20px;margin:0}.brand a{font-size:13px;color:var(--blue)}
.workspace{display:inline-flex;gap:4px;padding:4px;border:1px solid var(--line);border-radius:999px;background:var(--surface)}
.workspace button{border:0;border-radius:999px;padding:8px 16px;font-weight:600;color:var(--quiet);background:transparent}
.workspace button[aria-selected=true]{background:var(--blue);color:var(--on-blue)}
.ws-badge{font-size:11px;font-weight:400;opacity:.85}.ws-badge:empty{display:none}
.dirty-dot{width:7px;height:7px;border-radius:50%;background:var(--amber)}
#admin-status{margin:0 0 12px;min-height:20px;color:var(--quiet)}
#admin-status[data-error=true],#admin-save-status{color:var(--red)}
.login{max-width:440px;margin:40px auto;padding:24px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}.login h2{margin:0 0 16px;font-size:18px}.login label{display:block;margin-bottom:8px;color:var(--quiet)}.login-row{display:flex;gap:8px}
.layout{display:grid;grid-template-columns:210px minmax(0,1fr) 360px;gap:16px;align-items:start}
.rooms,.conflicts{position:sticky;top:72px;max-height:calc(100vh - 150px);overflow:auto;border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:12px}
.editor{min-width:0;border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:16px 18px}
.side-title{font-size:12px;font-weight:700;color:var(--quiet);margin:2px 2px 10px}.side-title small{font-weight:400}
.room-list{display:flex;flex-direction:column;gap:4px}
.room-list button{justify-content:space-between;border:1px solid transparent;background:transparent;text-align:left;white-space:normal;padding:8px 10px;width:100%}
.room-list button:hover{background:var(--panel)}
.room-list button[aria-current=true]{background:var(--selected);border-color:var(--blue);color:var(--blue);font-weight:600}
.room-list .badges{display:inline-flex;gap:4px;align-items:center;flex:none}
.count{font-size:11px;font-weight:700;border-radius:999px;padding:1px 7px}.count.exact{background:var(--red-bg);color:var(--red)}.count.grade{background:var(--amber-bg);color:var(--amber)}
.tools,.actions{display:flex;flex-wrap:wrap;gap:8px}
.field-label{display:block;font-weight:600;margin:12px 0 6px}
.room-heading{font-size:20px;margin:22px 0 10px;overflow-wrap:anywhere}
.meta{display:grid;grid-template-columns:1fr 1fr;gap:10px}.meta label{color:var(--quiet);font-size:12px}.meta input,.meta textarea{margin-top:5px;color:var(--ink);font-size:14px}.meta .wide{grid-column:1/-1}
.mark{font-weight:600}.mark.exact{color:var(--red)}.mark.grade{color:var(--amber)}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:separate;border-spacing:0;table-layout:fixed;border:1px solid var(--line);border-radius:9px;overflow:hidden}
th{font-size:12px;font-weight:500;color:var(--quiet);background:var(--panel);padding:8px 4px}
.grid{min-width:620px}.grid th:first-child{width:72px}
.grid td{border-top:1px solid var(--line);border-left:1px solid var(--line);padding:5px;vertical-align:top}
.grid tbody th{border-top:1px solid var(--line);font-weight:600}
.grid td input{padding:6px 7px}.grid td input+input{margin-top:4px;font-size:12px;color:var(--quiet)}
.card{min-height:58px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:3px;border:1px solid var(--line);border-radius:7px;padding:6px 4px;background:var(--surface);cursor:grab;user-select:none;-webkit-user-select:none;text-align:center;overflow-wrap:anywhere}
.card:hover{border-color:var(--quiet)}.card:active{cursor:grabbing}
.card strong{font-size:15px;font-weight:600}.card small{font-size:12px;color:var(--quiet)}
.card.blank strong{font-weight:400;color:var(--quiet);opacity:.6}
.grid td.exact .card,.grid td.exact input:first-child{border:2px solid var(--red);background:var(--red-bg)}
.grid td.grade .card,.grid td.grade input:first-child{border:2px solid var(--amber);background:var(--amber-bg)}
.grid td.dragging .card{opacity:.35}
.grid td.drop{background:var(--selected);box-shadow:inset 0 0 0 2px var(--blue)}
.grid td.editing{background:var(--selected)}
.grid td.flash{animation:flash 1.2s ease}@keyframes flash{0%,40%{box-shadow:inset 0 0 0 3px var(--blue)}100%{box-shadow:none}}
.grid td .why{display:block;font-size:11px;line-height:1.35;margin-top:4px;color:var(--red);overflow-wrap:anywhere}.grid td.grade .why{color:var(--amber)}
.filters{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.toggle{display:inline-flex;align-items:center;gap:6px;font-size:12px;border:1px solid var(--line);border-radius:999px;padding:5px 10px;cursor:pointer}
.toggle input{width:auto;margin:0}.toggle.exact b{color:var(--red)}.toggle.grade b{color:var(--amber)}
.mini th{padding:5px 2px;font-size:11px}.mini th:first-child{width:52px}
.mini td{border-top:1px solid var(--line);border-left:1px solid var(--line);height:34px;padding:2px;text-align:center}
.mini tbody th{border-top:1px solid var(--line);font-size:11px}
.mini td button{width:100%;height:100%;justify-content:center;padding:2px;border:0;border-radius:5px;font-size:12px;font-weight:700}
.mini td button.exact{background:var(--red-bg);color:var(--red)}.mini td button.grade{background:var(--amber-bg);color:var(--amber)}
.mini td button[aria-pressed=true]{outline:2px solid var(--blue);outline-offset:-2px}
.exclude{margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}
.exclude-list{display:flex;flex-wrap:wrap;gap:5px}
.ex-chip{padding:4px 10px;font-size:12px;border-radius:999px;white-space:nowrap}
.ex-chip[aria-pressed=true]{background:var(--selected);border-color:var(--blue);color:var(--blue)}
.ex-chip[aria-pressed=false]{background:transparent;border-style:dashed;color:var(--quiet);text-decoration:line-through}
.ex-tag{display:inline-block;margin-left:6px;font-size:10px;font-weight:400;color:var(--quiet);border:1px dashed var(--line);border-radius:999px;padding:0 6px}
.conflict-list{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.conflict-empty{border:1px dashed var(--line);border-radius:9px;padding:20px 12px;text-align:center;color:var(--green);font-size:13px}
.slot{border:1px solid var(--line);border-radius:9px;padding:8px 10px;background:var(--panel)}
.slot h3{font-size:13px;margin:0 0 6px}
.item{border-left:3px solid var(--red);padding:3px 0 3px 8px;margin-top:6px;font-size:12px}.item.grade{border-color:var(--amber)}
.item strong{display:block;font-size:13px;margin-bottom:3px}.item strong small{font-weight:400;color:var(--quiet);margin-left:4px}
.item .rooms-line{display:flex;flex-wrap:wrap;gap:4px}
.item .rooms-line button{padding:3px 8px;font-size:12px;border-radius:999px}
.item .rooms-line button[aria-current=true]{border-color:var(--blue);color:var(--blue)}
.schedule-box{border:1px solid var(--line);border-radius:10px;background:var(--panel);padding:14px 16px;margin-bottom:16px}
.schedule-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.schedule-head h2{font-size:17px;margin:0 0 4px}.schedule-head p{margin:0;color:var(--quiet)}
#schedule-state.on{color:var(--green);font-weight:600}
.next-empty{margin-top:10px}.next-empty p{margin:0 0 12px;line-height:1.6}
.next-when{margin-top:12px}.next-when label{display:block;font-weight:600;margin-bottom:6px}.next-when small{font-weight:400;color:var(--quiet)}
.when-row{display:flex;gap:8px;flex-wrap:wrap}.when-row input{width:auto;min-width:230px}
.savebar{position:fixed;left:0;right:0;bottom:0;z-index:25;display:flex;justify-content:flex-end;align-items:center;gap:14px;padding:12px max(16px,calc((100vw - 1680px)/2 + 16px));background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(8px);border-top:1px solid var(--line)}
.savebar #admin-changes{color:var(--quiet)}
dialog{color-scheme:light dark;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:14px;padding:24px;width:min(720px,calc(100% - 32px));max-height:85vh}
dialog::backdrop{background:#0008}dialog h2{margin-top:0;font-size:18px}
#admin-diff{max-height:45vh;overflow:auto;margin:16px 0;line-height:1.7;white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px}
@media(max-width:1280px){.layout{grid-template-columns:190px minmax(0,1fr)}.conflicts{grid-column:1/-1;position:static;max-height:none}}
@media(max-width:820px){
  .layout{grid-template-columns:minmax(0,1fr)}
  .rooms{position:static;max-height:none;padding:10px}
  .room-list{flex-direction:row;overflow-x:auto;padding-bottom:4px}
  .room-list button{width:auto;flex:none;white-space:nowrap;border-color:var(--line)}
  .editor{padding:12px}.meta{grid-template-columns:1fr}
  .bar{position:static}.workspace{order:3;width:100%;justify-content:center}.workspace button{flex:1;justify-content:center;padding:8px 10px}
  .savebar{justify-content:space-between}
}