/* PRC Admin — shared styles. Matches the curriculum editor (index.html) palette. */
:root{
  --bg:#f5f6f8; --panel:#ffffff; --ink:#1f2733; --muted:#6b7480;
  --line:#e2e6ec; --line2:#cfd5dd; --accent:#1f4e79; --accent2:#2f6db0;
  --ok:#1f7a44; --okbg:#e6f4ec; --warn:#9a3412; --warnbg:#fdecdf;
  --row-dirty:#fff8e1; --chip:#eef2f7;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%}
body{font:14px/1.45 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
     background:var(--bg);color:var(--ink)}
button{font:inherit;cursor:pointer;border-radius:7px;border:1px solid var(--line2);
       background:#fff;padding:7px 12px;color:var(--ink)}
button:hover{background:#f0f3f7}
button:disabled{opacity:.5;cursor:default}
button.primary{background:var(--accent);border-color:var(--accent);color:#fff}
button.primary:hover{background:var(--accent2)}
button.ghost{background:transparent;border-color:transparent;color:var(--muted);padding:4px 7px}
button.ghost:hover{background:#eef1f5;color:var(--ink)}
button.danger{color:#b42318;border-color:#f0c7c2}
input,select,textarea{font:inherit;color:var(--ink);border:1px solid var(--line2);background:#fff;
       padding:6px 8px;border-radius:6px}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent2);
       box-shadow:0 0 0 2px rgba(47,109,176,.15)}

/* ---- login ---- */
#prc-login{max-width:360px;margin:14vh auto;background:var(--panel);padding:28px;
       border:1px solid var(--line);border-radius:12px;box-shadow:0 8px 30px rgba(20,30,50,.08)}
#prc-login h1{font-size:18px;margin:0 0 4px}
#prc-login p{margin:0 0 18px;color:var(--muted)}
#prc-login label{display:block;font-size:12px;color:var(--muted);margin:12px 0 4px;font-weight:600}
#prc-login input{width:100%}
#prc-login button{width:100%;margin-top:18px}
.err{color:#b42318;background:#fdeceb;border:1px solid #f3c7c2;padding:8px 10px;
     border-radius:7px;margin-top:12px;font-size:13px;display:none}

/* ---- top bar + nav ---- */
header.prc-bar{position:sticky;top:0;z-index:40;background:var(--panel);border-bottom:1px solid var(--line);
      display:flex;align-items:center;gap:14px;padding:10px 18px;flex-wrap:wrap}
header.prc-bar .brand{font-weight:700;font-size:16px;color:var(--accent);white-space:nowrap}
header.prc-bar nav{display:flex;gap:2px;flex-wrap:wrap;margin-right:auto}
header.prc-bar nav a{text-decoration:none;color:var(--muted);padding:7px 12px;border-radius:8px;
      font-weight:500;white-space:nowrap}
header.prc-bar nav a:hover{background:#eef1f5;color:var(--ink)}
header.prc-bar nav a.active{background:var(--accent);color:#fff;font-weight:600}
header.prc-bar .who{color:var(--muted);font-size:12px}

/* ---- page shell ---- */
main.prc-main{padding:18px 18px 90px;max-width:1080px;margin:0 auto}
.pagehead{display:flex;align-items:center;gap:12px;margin:2px 0 16px;flex-wrap:wrap}
.pagehead h1{margin:0;font-size:20px;color:var(--accent)}
.pagehead .count{color:var(--muted);font-size:13px;margin-right:auto}
.toolbar{display:flex;gap:10px;align-items:center;margin-bottom:16px;flex-wrap:wrap}
.toolbar input.search{flex:1;min-width:200px;max-width:420px}
.toolbar select.filter{min-width:150px}

/* ---- cards ---- */
.card{background:var(--panel);border:1px solid var(--line);border-radius:11px;
      margin-bottom:16px;box-shadow:0 1px 2px rgba(20,30,50,.04);overflow:hidden}
.card.dirty{border-color:#e7c14d;box-shadow:0 0 0 2px rgba(231,193,77,.25)}
.card-head{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--line);
      flex-wrap:wrap}
.card-head h2{margin:0;font-size:15px}
.card-head .code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:700;color:var(--accent);
      background:var(--chip);padding:2px 8px;border-radius:6px;font-size:13px}
.card-head .meta{color:var(--muted);font-size:12.5px}
.card-head .spacer{margin-left:auto}
.card-head .savestate{font-size:12px;padding:3px 9px;border-radius:20px;background:var(--chip);color:var(--muted)}
.card-head .savestate.dirty{background:var(--warnbg);color:var(--warn)}
.card-head .savestate.ok{background:var(--okbg);color:var(--ok)}
.card-head .savestate.saving{background:#eef2f7;color:var(--accent2)}
.card-body{padding:14px 16px}
.field-label{font-size:11.5px;letter-spacing:.03em;text-transform:uppercase;color:var(--muted);
      font-weight:600;margin:0 0 6px}
.field-label:not(:first-child){margin-top:16px}
.row-inline{display:flex;gap:14px;flex-wrap:wrap;align-items:flex-end;margin-bottom:6px}
.row-inline label{display:block;font-size:11.5px;text-transform:uppercase;letter-spacing:.03em;
      color:var(--muted);font-weight:600;margin-bottom:4px}
.row-inline input.txt{min-width:240px}
.keytag{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;color:var(--muted)}

/* ---- rich text editor ---- */
.rte{border:1px solid var(--line2);border-radius:8px;overflow:hidden;background:#fff}
.rte-tools{display:flex;gap:2px;flex-wrap:wrap;padding:5px 6px;background:#f7f9fb;border-bottom:1px solid var(--line)}
.rte-tools button{padding:3px 9px;border:1px solid transparent;background:transparent;border-radius:6px;
      font-size:13px;color:var(--ink);min-width:30px}
.rte-tools button:hover{background:#e7edf4}
.rte-tools .sep{width:1px;background:var(--line2);margin:2px 4px}
.rte-body{padding:11px 14px;min-height:80px;outline:none;line-height:1.55}
.rte-body:focus{background:#fff}
.rte-body p{margin:0 0 .7em}
.rte-body p:last-child{margin-bottom:0}
.rte-body h3{font-size:15px;margin:.4em 0 .4em}
.rte-body ul,.rte-body ol{margin:.3em 0 .7em;padding-left:1.4em}
.rte-body li{margin:.15em 0}
.rte-body a{color:var(--accent2)}

.card-foot{display:flex;gap:10px;align-items:center;padding:10px 16px;border-top:1px solid var(--line);
      background:#fafbfc}
.card-foot .spacer{margin-left:auto}

.empty{padding:40px;text-align:center;color:var(--muted)}
.group-head{font-size:13px;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.04em;
      margin:24px 0 10px;padding-bottom:6px;border-bottom:2px solid var(--line2)}
.group-head:first-of-type{margin-top:4px}

/* ---- toast ---- */
.toast{position:fixed;bottom:22px;right:18px;max-width:380px;background:#1f2733;color:#fff;
       padding:11px 14px;border-radius:9px;font-size:13px;z-index:60;box-shadow:0 8px 24px rgba(0,0,0,.25);
       opacity:0;transform:translateY(8px);transition:.2s;pointer-events:none;white-space:pre-line}
.toast.show{opacity:1;transform:none}
.toast.ok{background:#0f7a3d}.toast.err{background:#a3271b}
.spin{display:inline-block;width:13px;height:13px;border:2px solid #ffffff66;border-top-color:#fff;
      border-radius:50%;animation:sp .7s linear infinite;vertical-align:-2px;margin-right:6px}
@keyframes sp{to{transform:rotate(360deg)}}
.hidden{display:none!important}