/* Layout: app shell — navy bar with role switcher, side nav per role, working canvas; one shared data model behind all three roles */
:root{
  --bg:#f4f6f9; --surface:#ffffff; --sunk:#eef1f6; --line:#dbe1ea; --ink:#16213a; --muted:#5a6479;
  --bar:#13285c; --bar-ink:#eef2fb; --bar-muted:#a9b6d6;
  --accent:#2c7a77; --accent-soft:#e2f0ef; --accent-ink:#1d5a57;
  --good:#2e7d4f; --good-soft:#e3f2e8; --warn:#9a5b00; --warn-soft:#fbefd9; --crit:#b3261e; --crit-soft:#fbe5e3;
  --focus:#3b6fd8;
  --f-display:"Literata", Georgia, "Times New Roman", serif;
  --f-body:"Public Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono:"JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0d1320; --surface:#151d2e; --sunk:#111827; --line:#27324a; --ink:#e7ecf5; --muted:#9ba7be;
  --bar:#0a1736; --bar-ink:#e7ecf5; --bar-muted:#8796bb;
  --accent:#62b6b0; --accent-soft:#16312f; --accent-ink:#8fd3cd;
  --good:#62c38d; --good-soft:#15301f; --warn:#e3a54a; --warn-soft:#33260f; --crit:#f2847b; --crit-soft:#3a1716;
  --focus:#7fa4f5; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0d1320; --surface:#151d2e; --sunk:#111827; --line:#27324a; --ink:#e7ecf5; --muted:#9ba7be;
  --bar:#0a1736; --bar-ink:#e7ecf5; --bar-muted:#8796bb;
  --accent:#62b6b0; --accent-soft:#16312f; --accent-ink:#8fd3cd;
  --good:#62c38d; --good-soft:#15301f; --warn:#e3a54a; --warn-soft:#33260f; --crit:#f2847b; --crit-soft:#3a1716;
  --focus:#7fa4f5; color-scheme:dark}

*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:15px;line-height:1.5}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--bar)}
h1,h2,h3{font-family:var(--f-display);font-weight:600;text-wrap:balance;margin:0;line-height:1.2}
h1{font-size:1.65rem} h2{font-size:1.2rem} h3{font-size:1rem;font-family:var(--f-body);font-weight:600}
p{margin:0}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:4px}
.mono{font-family:var(--f-mono);font-size:.85em}
.muted{color:var(--muted)}
.num{font-variant-numeric:tabular-nums}

/* top bar */
.bar{position:sticky;top:env(safe-area-inset-top,0px);z-index:9;background:var(--bar);color:var(--bar-ink);
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:10px;
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px}
.brand{display:flex;align-items:baseline;gap:8px;background:none;border:0;color:inherit;cursor:pointer;padding:4px 0}
.brand b{font-family:var(--f-display);font-size:1.15rem;font-weight:600;letter-spacing:.01em}
.brand span{color:var(--bar-muted);font-size:.8rem}
.roles{display:flex;background:rgba(255,255,255,.08);border-radius:999px;padding:3px}
.roles button{border:0;background:none;color:var(--bar-muted);padding:6px 14px;border-radius:999px;cursor:pointer;font-weight:600;font-size:.88rem}
.roles button[aria-pressed="true"]{background:var(--bar-ink);color:var(--bar)}
.tag-proto{font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--bar-muted);border:1px solid rgba(255,255,255,.2);border-radius:999px;padding:3px 10px}

/* shell */
.shell{display:block;min-height:calc(100vh - 110px)}
.topnav{display:flex;gap:2px;flex-wrap:wrap;margin-right:auto}
.topnav button{border:0;background:none;color:var(--bar-muted);font-weight:600;font-size:.92rem;padding:8px 14px;border-radius:8px;cursor:pointer}
.topnav button:hover{color:var(--bar-ink);background:rgba(255,255,255,.08)}
.topnav button[aria-current="page"]{color:var(--bar-ink);background:rgba(255,255,255,.14)}
.me{display:flex;align-items:center;gap:10px;font-size:.85rem}
.who-top{font-weight:600}
.subnav{background:var(--surface);border-bottom:1px solid var(--line);display:flex;gap:4px;overflow-x:auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:0}
.subnav button{border:0;background:none;padding:11px 12px;font-weight:600;font-size:.88rem;color:var(--muted);cursor:pointer;white-space:nowrap;border-bottom:2px solid transparent}
.subnav button:hover{color:var(--ink)}
.subnav button[aria-current="page"]{color:var(--accent-ink);border-bottom-color:var(--accent)}
nav.side{border-right:1px solid var(--line);background:var(--surface);padding-block:18px;padding-left:max(12px,env(safe-area-inset-left,0px));padding-right:12px;display:flex;flex-direction:column;gap:2px}
nav.side .who{padding:4px 10px 14px;border-bottom:1px solid var(--line);margin-bottom:10px}
nav.side .who b{display:block;font-size:.95rem}
nav.side .who span{font-size:.8rem;color:var(--muted)}
nav.side button{display:flex;justify-content:space-between;align-items:center;text-align:left;border:0;background:none;padding:9px 10px;border-radius:8px;cursor:pointer;color:var(--ink);font-weight:500}
nav.side button:hover{background:var(--sunk)}
nav.side button[aria-current="page"]{background:var(--accent-soft);color:var(--accent-ink);font-weight:600}
.count{font-size:.75rem;background:var(--crit);color:#fff;border-radius:999px;padding:0 7px;font-weight:600}
main{padding-block:24px 48px;padding-left:max(16px,2.5vw);padding-right:max(16px,env(safe-area-inset-right,0px),2.5vw);min-width:0}
.page{width:100%;display:flex;flex-direction:column;gap:20px}
.head p{max-width:75ch}
.head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:12px}
.head p{color:var(--muted);margin-top:4px}
.eyebrow{font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600}

/* blocks */
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr))}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px;display:flex;flex-direction:column;gap:12px;min-width:0}
.panel > header{display:flex;justify-content:space-between;align-items:baseline;gap:10px;flex-wrap:wrap}
.list{display:flex;flex-direction:column}
.row{display:flex;gap:12px;align-items:center;justify-content:space-between;padding:10px 0;border-top:1px solid var(--line)}
.row:first-child{border-top:0;padding-top:0}
.row .main{min-width:0;display:flex;flex-direction:column}
.row .main small{color:var(--muted)}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:.76rem;font-weight:600;border-radius:999px;padding:2px 10px;white-space:nowrap}
.pill.good{background:var(--good-soft);color:var(--good)}
.pill.warn{background:var(--warn-soft);color:var(--warn)}
.pill.crit{background:var(--crit-soft);color:var(--crit)}
.pill.info{background:var(--accent-soft);color:var(--accent-ink)}
.pill.plain{background:var(--sunk);color:var(--muted)}
.btn{border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:8px 14px;font-weight:600;cursor:pointer;font-size:.9rem}
.btn:hover{background:var(--sunk)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
:root[data-theme="dark"] .btn.primary{color:#08201f}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .btn.primary{color:#08201f}}
.btn.primary:hover{filter:brightness(1.07)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.small{padding:5px 10px;font-size:.82rem}
.bar-track{height:8px;background:var(--sunk);border-radius:999px;overflow:hidden}
.bar-fill{height:100%;background:var(--accent);border-radius:999px;transition:width .4s}
.kpi{display:flex;flex-direction:column;gap:2px}
.kpi b{font-size:1.9rem;font-family:var(--f-display);font-weight:600;font-variant-numeric:tabular-nums;line-height:1.1}
.kpi span{color:var(--muted);font-size:.85rem}
.note{font-size:.84rem;color:var(--muted)}
.callout{border-left:3px solid var(--accent);background:var(--accent-soft);padding:10px 14px;border-radius:0 8px 8px 0;font-size:.9rem;color:var(--ink)}
.callout.warn{border-color:var(--warn);background:var(--warn-soft)}

/* tables */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px}
table{border-collapse:collapse;width:100%;font-size:.9rem}
th,td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
th{font-size:.74rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600;background:var(--sunk)}
tr:last-child td{border-bottom:0}
td.n,th.n{text-align:right;font-variant-numeric:tabular-nums}
td input.score{width:62px;text-align:right;border:1px solid var(--line);border-radius:6px;padding:4px 6px;background:var(--surface);font-variant-numeric:tabular-nums}
td input.score.missing{border-color:var(--warn);background:var(--warn-soft)}
td input.score.changed{border-color:var(--accent);background:var(--accent-soft)}

/* course player */
.course{display:grid;grid-template-columns:250px minmax(0,1fr);gap:16px;align-items:start}
.outline{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px}
.mod{padding:8px}
.mod > b{display:flex;justify-content:space-between;gap:8px;font-size:.9rem}
.mod ul{list-style:none;margin:6px 0 0;padding:0;display:flex;flex-direction:column;gap:2px}
.mod li button{width:100%;text-align:left;border:0;background:none;padding:6px 8px;border-radius:6px;cursor:pointer;font-size:.86rem;display:flex;gap:8px;align-items:center;color:var(--ink)}
.mod li button:hover{background:var(--sunk)}
.mod li button[aria-current="true"]{background:var(--accent-soft);color:var(--accent-ink);font-weight:600}
.mod li button:disabled{color:var(--muted);cursor:not-allowed}
.dot{width:9px;height:9px;border-radius:50%;border:1.5px solid var(--muted);flex:none}
.dot.done{background:var(--good);border-color:var(--good)}
.lesson{display:flex;flex-direction:column;gap:14px}
.lesson .body{max-width:66ch;display:flex;flex-direction:column;gap:12px}
.pim{display:grid;grid-template-columns:auto repeat(3,minmax(0,1fr));gap:4px;max-width:420px;font-size:.8rem}
.pim div{padding:8px;border-radius:6px;text-align:center}
.pim .lab{background:none;color:var(--muted);text-align:right;padding-right:6px;align-self:center}
.pim .lo{background:var(--good-soft);color:var(--good)} .pim .md{background:var(--warn-soft);color:var(--warn)} .pim .hi{background:var(--crit-soft);color:var(--crit)}
.quiz{display:flex;flex-direction:column;gap:16px}
.q fieldset{border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin:0;display:flex;flex-direction:column;gap:6px}
.q legend{font-weight:600;padding:0 6px}
.q label{display:flex;gap:8px;align-items:flex-start;padding:4px;border-radius:6px;cursor:pointer}
.q label.right{background:var(--good-soft)} .q label.wrong{background:var(--crit-soft)}

/* tutor */
.tutor{border:1px solid var(--line);border-radius:12px;background:var(--surface);display:flex;flex-direction:column;max-height:520px}
.tutor header{padding:12px 14px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:8px}
.chat{padding:12px 14px;overflow-y:auto;display:flex;flex-direction:column;gap:10px;min-height:160px;flex:1}
.msg{padding:8px 12px;border-radius:10px;max-width:92%;font-size:.9rem}
.msg.me{align-self:flex-end;background:var(--accent);color:#fff}
:root[data-theme="dark"] .msg.me{color:#08201f}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .msg.me{color:#08201f}}
.msg.ai{align-self:flex-start;background:var(--sunk)}
.msg.ai cite{display:block;font-style:normal;font-size:.76rem;color:var(--muted);margin-top:4px}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:4px 11px;font-size:.8rem;cursor:pointer}
.chip:hover{background:var(--sunk)}
.chip.on{background:var(--accent-soft);border-color:var(--accent);color:var(--accent-ink)}
.chip b{font-variant-numeric:tabular-nums}
.ask{display:flex;gap:8px;padding:10px 14px;border-top:1px solid var(--line)}
.ask input{flex:1;min-width:0;border:1px solid var(--line);border-radius:8px;padding:7px 10px;background:var(--bg)}

/* workflows */
.wf{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:16px;align-items:start}
.wf-item{width:100%;text-align:left;border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:12px 14px;cursor:pointer;display:flex;flex-direction:column;gap:6px;color:var(--ink)}
.wf-item[aria-current="true"]{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.wf-item .top{display:flex;justify-content:space-between;gap:8px;align-items:center}
.steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.step{display:grid;grid-template-columns:28px minmax(0,1fr);gap:10px;position:relative;padding-bottom:16px}
.step::before{content:"";position:absolute;left:13px;top:26px;bottom:0;width:2px;background:var(--line)}
.step:last-child::before{display:none}
.step .mk{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:.75rem;font-weight:700;border:2px solid var(--line);background:var(--surface);color:var(--muted)}
.step.done .mk{background:var(--good);border-color:var(--good);color:#fff}
.step.now .mk{border-color:var(--warn);color:var(--warn);background:var(--warn-soft)}
.step .who{font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;font-weight:600;color:var(--muted)}
.step .txt{display:flex;flex-direction:column;gap:2px}
.step .txt small{color:var(--muted)}
.act{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}

/* feed */
.feed .row{align-items:flex-start}
.feed time{font-family:var(--f-mono);font-size:.76rem;color:var(--muted);white-space:nowrap}
.src{font-family:var(--f-mono);font-size:.78rem;background:var(--sunk);border:1px solid var(--line);border-radius:8px;padding:10px;white-space:pre-wrap;overflow-x:auto}

/* builder */
.files{display:flex;flex-direction:column;gap:8px}
.file{display:flex;gap:10px;align-items:center;border:1px solid var(--line);border-radius:8px;padding:8px 12px;cursor:pointer}
.file .ext{font-family:var(--f-mono);font-size:.72rem;background:var(--sunk);border-radius:4px;padding:2px 6px;color:var(--muted)}
.progress{height:6px;background:var(--sunk);border-radius:999px;overflow:hidden}
.progress i{display:block;height:100%;width:0;background:var(--accent);transition:width 1.4s ease}
.draft{border:1px dashed var(--accent);border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:12px;background:var(--surface)}
.draft ol{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:4px}

#toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%) translateY(20px);background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:10px;font-size:.9rem;opacity:0;pointer-events:none;transition:.25s;max-width:calc(100% - 32px);z-index:20}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* admin forms */
.form{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,200px),1fr));gap:12px}
.field{display:flex;flex-direction:column;gap:4px;min-width:0}
.field label{font-size:.78rem;font-weight:600;color:var(--muted)}
.field input,.field select{border:1px solid var(--line);border-radius:8px;padding:7px 10px;background:var(--surface);min-width:0}
.sections{display:flex;flex-direction:column;gap:14px}
fieldset.sec{border:1px solid var(--line);border-radius:10px;padding:12px 14px 14px;margin:0;min-width:0}
fieldset.sec legend{font-weight:600;padding:0 6px;font-size:.92rem}
fieldset.sec .note.wide{margin:0 0 10px}
.field.wide{grid-column:1/-1}
.field textarea{border:1px solid var(--line);border-radius:8px;padding:7px 10px;background:var(--surface);resize:vertical;min-width:0}
.dl{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,180px),1fr));gap:12px 18px;margin:0}
.dl > div{min-width:0}
.dl .wide{grid-column:1/-1}
.dl dt{font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600}
.dl dd{margin:2px 0 0;overflow-wrap:anywhere}
.seg{display:flex;gap:4px;flex-wrap:wrap;border-bottom:1px solid var(--line)}
.seg button{border:0;background:none;padding:9px 14px;font-weight:600;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}
.seg button[aria-selected="true"]{color:var(--accent-ink);border-bottom-color:var(--accent)}
tr.detail > td{padding:16px}
.ms-label{font-size:.78rem;font-weight:600;color:var(--muted)}
details.ms{position:relative}
details.ms summary{list-style:none;border:1px solid var(--line);border-radius:8px;padding:7px 28px 7px 10px;background:var(--surface);cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;position:relative}
details.ms summary::-webkit-details-marker{display:none}
details.ms summary::after{content:"";position:absolute;right:11px;top:50%;width:7px;height:7px;border-right:1.5px solid var(--muted);border-bottom:1.5px solid var(--muted);transform:translateY(-70%) rotate(45deg)}
details.ms[open] summary{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.ms-list{position:absolute;z-index:5;top:calc(100% + 4px);left:0;min-width:100%;width:max-content;max-width:min(360px,90vw);max-height:300px;overflow:auto;background:var(--surface);border:1px solid var(--line);border-radius:8px;box-shadow:0 8px 24px rgba(0,0,0,.12);padding:6px}
.ms-list label{display:flex;gap:8px;align-items:center;padding:5px 6px;border-radius:6px;cursor:pointer;font-size:.88rem}
.ms-list label:hover{background:var(--sunk)}
.ms-list label span{flex:1}
.ms-list small{color:var(--muted);font-variant-numeric:tabular-nums}
.ms-clear{border:0;background:none;color:var(--accent-ink);font-weight:600;font-size:.82rem;padding:4px 6px;cursor:pointer}
.filters .form{grid-template-columns:repeat(auto-fill,minmax(min(100%,170px),1fr))}
.field.check{flex-direction:row;align-items:center;gap:8px;padding-top:18px}
.toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.toolbar input[type=search],.toolbar select{border:1px solid var(--line);border-radius:8px;padding:7px 10px;background:var(--surface);min-width:0}
.toolbar input[type=search]{flex:1 1 220px}
tr.confirm td{background:var(--crit-soft);white-space:normal}
.btn.danger{color:var(--crit);border-color:var(--crit)}
.btn.danger.solid{background:var(--crit);color:#fff}
.perm{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));font-size:.86rem}
.perm div{padding:6px 8px;border-bottom:1px solid var(--line)}
.perm .h{font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600}
.perm .y{color:var(--good);font-weight:700;text-align:center}
.perm .h.c{text-align:center}
.err{color:var(--crit);font-size:.85rem}

/* course templates */
.module header{align-items:flex-start}
.tpl-items{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:10px}
.tpl-items > li{padding:10px 12px;border-bottom:1px solid var(--line)}
.tpl-items > li:last-child{border-bottom:0}
.tpl-item{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:10px 12px;align-items:start}
.ti-main{display:flex;flex-direction:column;gap:2px;min-width:0}
.ti-main small{font-size:.8rem;overflow-wrap:anywhere}
.ti-act{margin:0;flex-wrap:nowrap}
.tag{font-size:.7rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;border-radius:6px;padding:3px 8px;white-space:nowrap;background:var(--sunk);color:var(--muted);margin-top:1px}
.tag.t-scorm{background:var(--accent-soft);color:var(--accent-ink)}
.tag.t-assignment,.tag.t-quiz,.tag.t-discussion{background:var(--warn-soft);color:var(--warn)}
.btn.icon{min-width:32px;padding-inline:8px}
.confirm-li{background:var(--crit-soft);border-radius:8px;padding:10px 12px}
details.lessons{margin-top:4px;font-size:.84rem}
details.lessons summary{cursor:pointer;color:var(--accent-ink);font-weight:600}
details.lessons ol{margin:6px 0 0;padding-left:20px}
.rich{font-size:.9rem;line-height:1.55;overflow-wrap:anywhere;color:var(--ink)}
details .rich{margin-top:6px;border-left:3px solid var(--line);padding:2px 0 2px 12px;max-height:480px;overflow:auto}
.rich table{border-collapse:collapse;margin:6px 0;font-size:.85rem}.rich td,.rich th{border:1px solid var(--line);padding:4px 8px;vertical-align:top}
.rich h1,.rich h2,.rich h3,.rich h4{font-size:1rem;margin:10px 0 4px}.rich p{margin:0 0 8px}.rich ul,.rich ol{margin:4px 0 8px;padding-left:20px}
.media-note{color:var(--muted);font-style:italic}
ol.qlist{display:flex;flex-direction:column;gap:12px}ol.qlist .rich{border:0;padding:0;margin:0;max-height:none}
ul.answers{list-style:none;padding:0;margin:4px 0;display:flex;flex-direction:column;gap:2px}
ul.answers li{display:flex;gap:8px;align-items:baseline}ul.answers li.right{color:var(--good);font-weight:600}
ul.answers .ok{color:var(--good);font-weight:700}ul.answers .rich p{margin:0}ul.answers .no{color:var(--muted)}
@media (max-width:700px){.tpl-item{grid-template-columns:minmax(0,1fr)}.ti-act{flex-wrap:wrap}}
/* account menu (both modes) */
.umenu{position:relative}
.umenu summary{list-style:none;display:flex;align-items:center;gap:8px;cursor:pointer;padding:4px 6px;border-radius:999px}
.umenu summary::-webkit-details-marker{display:none}
.umenu summary:hover{background:rgba(127,127,127,.15)}
.umenu .caret{width:7px;height:7px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.8}
.avatar{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-size:.75rem;font-weight:700;background:var(--accent);color:#fff;flex:none}
.avatar.sm{width:28px;height:28px;font-size:.7rem}
.avatar.lg{width:64px;height:64px;font-size:1.3rem}
.umenu-list{position:absolute;right:0;top:calc(100% + 8px);z-index:20;min-width:260px;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.18);padding:6px;display:flex;flex-direction:column}
.umenu-list button{display:flex;align-items:center;gap:10px;border:0;background:none;text-align:left;padding:8px 10px;border-radius:6px;cursor:pointer;color:var(--ink);font-size:.9rem}
.umenu-list button:hover{background:var(--sunk)}
.umenu-list button small{display:block;color:var(--muted);font-size:.76rem}
.umenu-list button[aria-checked="true"]{background:var(--accent-soft)}
.umenu-list .tick{margin-left:auto;color:var(--accent-ink);font-weight:700}
.umenu-list hr{border:0;border-top:1px solid var(--line);margin:4px 0;width:100%}
.umenu-h{font-size:.7rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:600;padding:6px 10px 2px}

/* student mode: Moodle-style shell */
:root{--m-link:#0f6cbf;--m-content:#0b8a8a;--m-inter:#a8571b;--m-assess:#c22a7e;--m-collab:#6b43c7;--m-done:#1d7a3e;--m-done-bg:#dff2e4}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){--m-link:#7fb4ef;--m-content:#4cc3c3;--m-inter:#e39a5b;--m-assess:#ef7fbd;--m-collab:#ad91f0;--m-done:#78d394;--m-done-bg:#183424}}
:root[data-theme="dark"]{--m-link:#7fb4ef;--m-content:#4cc3c3;--m-inter:#e39a5b;--m-assess:#ef7fbd;--m-collab:#ad91f0;--m-done:#78d394;--m-done-bg:#183424}
body.student-mode .bar{background:var(--surface);color:var(--ink);border-bottom:1px solid var(--line)}
body.student-mode::before{background:var(--surface)}
body.student-mode .brand span{color:var(--muted)}
body.student-mode .topnav button{color:var(--ink);background:none}
body.student-mode .topnav button[aria-current="page"]{box-shadow:inset 0 -3px 0 var(--m-link);border-radius:0}
body.student-mode main{background:var(--bg)}
.spage{max-width:1180px;margin:0 auto;display:flex;flex-direction:column;gap:18px;min-width:0}
.spage.narrow{max-width:900px}
.spage h1{font-family:var(--f-body);font-weight:700;font-size:1.75rem}
.hi{font-size:1.9rem!important}
.h3{font-size:1.05rem;font-family:var(--f-body);font-weight:700;margin-top:8px}
.small{font-size:.82rem}
.scard{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:18px;display:flex;flex-direction:column;gap:12px;min-width:0}
.scard h2{font-family:var(--f-body);font-size:1.1rem;font-weight:700}
.sgrid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,320px);gap:18px;align-items:start}
.sgrid.two{grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr))}
.sside{display:flex;flex-direction:column;gap:18px;min-width:0}
.sbtn{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:6px;padding:7px 14px;font-weight:600;cursor:pointer;font-size:.9rem;align-self:flex-start}
.sbtn.primary{background:var(--m-link);border-color:var(--m-link);color:#fff}
:root[data-theme="dark"] .sbtn.primary{color:#0b1a2c}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .sbtn.primary{color:#0b1a2c}}
.sbtn:disabled{opacity:.5;cursor:not-allowed}
.alink,.clink,.linkbtn{border:0;background:none;padding:0;color:var(--m-link);cursor:pointer;text-align:left;font:inherit}
.alink:hover,.clink:hover,.linkbtn:hover{text-decoration:underline}
.clink{font-weight:700;font-size:1rem}
.ccards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,240px),1fr));gap:16px}
.ccard{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--surface);display:flex;flex-direction:column}
.ccard-img{height:96px;display:grid;place-items:center;color:#fff;font-weight:700;letter-spacing:.1em;font-size:1.3rem}
.ccard-img.c0{background:linear-gradient(135deg,#1b4f8c,#2d7fc1)}.ccard-img.c1{background:linear-gradient(135deg,#0d6d6a,#23a39e)}.ccard-img.c2{background:linear-gradient(135deg,#6a3fb5,#9a6fe0)}
.ccard-img.c3{background:linear-gradient(135deg,#a24a12,#d7843d)}.ccard-img.c4{background:linear-gradient(135deg,#8a1f5b,#c8508f)}.ccard-img.c5{background:linear-gradient(135deg,#2f5d1f,#5c9a3e)}
.ccard-body{padding:12px 14px 14px;display:flex;flex-direction:column;gap:6px}
.prog{display:flex;align-items:center;gap:8px;font-size:.8rem;color:var(--muted)}
.prog .bar{flex:1;height:6px;background:var(--sunk);border-radius:999px;overflow:hidden;display:block;min-width:60px}
.prog .bar i{display:block;height:100%;background:var(--m-link)}
.prog.inline{flex:0 1 260px}
.sfilter,.ctabs{display:flex;gap:4px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.sfilter button,.ctabs button{border:0;background:none;padding:9px 14px;font-weight:600;color:var(--muted);cursor:pointer;border-bottom:3px solid transparent;margin-bottom:-1px}
.sfilter button[aria-selected="true"],.ctabs button[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--m-link)}
.todo{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.todo li{display:flex;gap:10px;align-items:flex-start}.todo li > div{display:flex;flex-direction:column;min-width:0}
.bigmoney{font-size:1.6rem;font-weight:700;font-variant-numeric:tabular-nums}.owe{color:var(--crit)}
.crumbs{display:flex;flex-wrap:wrap;gap:6px;font-size:.85rem;color:var(--muted);align-items:center}
.crumbs button{border:0;background:none;padding:0;color:var(--m-link);cursor:pointer;font:inherit}
.ctitle{margin-top:-6px}
.course-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:24px;align-items:start;max-width:1320px}
.cindex{position:sticky;top:76px;max-height:calc(100vh - 96px);overflow:auto;font-size:.84rem;border-right:1px solid var(--line);padding-right:12px;display:flex;flex-direction:column;gap:2px}
.cindex-h{font-weight:700;font-size:.95rem;margin-bottom:6px}
.cindex a{font-weight:700;color:var(--ink);text-decoration:none;padding:6px 4px 2px}
.cindex ul{list-style:none;margin:0 0 4px;padding:0 0 0 12px}
.cindex li button{border:0;background:none;color:var(--ink);text-align:left;padding:3px 0 3px 18px;cursor:pointer;font:inherit;position:relative;width:100%}
.cindex li button::before{content:"";position:absolute;left:2px;top:8px;width:9px;height:9px;border-radius:50%;border:1.5px solid var(--muted)}
.cindex li.ok button::before{background:var(--m-done);border-color:var(--m-done)}
.cindex li button:hover{color:var(--m-link)}
.cmain{display:flex;flex-direction:column;gap:16px;min-width:0}
.cmeta{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;font-size:.86rem;color:var(--muted)}
.cmeta .linkbtn{margin-left:auto}
.csec{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:6px 20px 10px}
.csec h2{font-family:var(--f-body);font-size:1.3rem;font-weight:700;margin:0}
.chev{display:flex;align-items:center;gap:12px;border:0;background:none;color:var(--ink);font:inherit;cursor:pointer;padding:10px 0;width:100%;text-align:left}
.chev > span:first-child{width:28px;height:28px;border-radius:6px;background:var(--accent-soft);color:var(--m-link);display:grid;place-items:center;font-size:1rem;line-height:1}
.acts{list-style:none;margin:0;padding:0}
.act{display:flex;gap:14px;align-items:flex-start;padding:14px 4px;border-top:1px dashed var(--line)}
.act-main{display:flex;flex-direction:column;gap:3px;min-width:0}
.act-kind{font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600}
.act .alink{font-size:1rem;overflow-wrap:anywhere}
.mi{width:36px;height:36px;border-radius:8px;display:grid;place-items:center;flex:none;background:var(--sunk)}
.mi svg{width:24px;height:24px}
.mi-content{color:var(--m-content)}.mi-interactive{color:var(--m-inter)}.mi-assess{color:var(--m-assess)}.mi-collab{color:var(--m-collab)}
.cmp{display:inline-block;font-size:.75rem;font-weight:600;border-radius:4px;padding:2px 8px;border:1px solid var(--line);color:var(--muted)}
.cmp.done{background:var(--m-done-bg);border-color:transparent;color:var(--m-done)}
.ahead{display:flex;gap:14px;align-items:center}
.ahead .mi{width:48px;height:48px}.ahead .mi svg{width:30px;height:30px}
.cmp-row{display:flex;gap:6px;flex-wrap:wrap}
.spage .rich{max-height:none;border:0;padding:0}
.actnav{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:14px}
.actnav .sbtn{max-width:48%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.quizinfo{text-align:center;display:flex;flex-direction:column;gap:2px;padding:6px 0}
.hgrade{font-weight:700;text-align:center}
.notice{background:var(--accent-soft);color:var(--accent-ink);border-radius:8px;padding:10px 12px;font-size:.9rem}
.scorm-box{border:1px solid var(--line);border-radius:10px;padding:16px;display:flex;flex-direction:column;gap:12px;background:var(--surface)}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,200px),1fr));gap:10px 18px;margin:0}
.kv dt{font-size:.74rem;color:var(--muted);font-weight:600}.kv dd{margin:2px 0 0;overflow-wrap:anywhere}
.quiz-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:20px;align-items:start}
.qnav{position:sticky;top:76px;border:1px solid var(--line);border-radius:10px;padding:12px;background:var(--surface);display:flex;flex-direction:column;gap:10px}
.qnav-h{font-weight:700;font-size:.9rem}
.qnav-grid{display:grid;grid-template-columns:repeat(auto-fill,30px);gap:6px}
.qnav-grid a{width:30px;height:36px;border:1px solid var(--line);border-radius:4px;display:grid;place-items:center;font-size:.8rem;color:var(--ink);text-decoration:none;background:var(--surface);box-shadow:inset 0 -6px 0 var(--surface)}
.qnav-grid a.ans{box-shadow:inset 0 -6px 0 var(--muted)}
.qnav-grid a.right{box-shadow:inset 0 -6px 0 var(--m-done)}.qnav-grid a.wrong{box-shadow:inset 0 -6px 0 var(--crit)}.qnav-grid a.part{box-shadow:inset 0 -6px 0 var(--warn)}
.timer{font-variant-numeric:tabular-nums;font-weight:700;color:var(--crit);font-size:.9rem}
.qmain{display:flex;flex-direction:column;gap:14px;min-width:0}
.qbox{display:grid;grid-template-columns:130px minmax(0,1fr);gap:14px;scroll-margin-top:80px}
.qinfo{background:var(--sunk);border:1px solid var(--line);border-radius:8px;padding:10px;display:flex;flex-direction:column;gap:4px;font-size:.84rem;align-self:start}
.qinfo small{color:var(--muted)}
.qcontent{background:var(--accent-soft);border-radius:8px;padding:14px;display:flex;flex-direction:column;gap:10px}
.qbox.right .qcontent{background:var(--m-done-bg)}.qbox.wrong .qcontent{background:var(--crit-soft)}.qbox.part .qcontent{background:var(--warn-soft)}
.qtext{font-size:1rem;color:var(--ink)}
.qans{border:0;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}
.qopt{display:flex;gap:8px;align-items:baseline;padding:6px 8px;border-radius:6px;cursor:pointer}
.qopt:hover{background:rgba(127,127,127,.1)}
.qopt input{margin-top:3px}
.qopt .rich p{margin:0}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.review-sum th{width:160px}
table.status td.ok{background:var(--m-done-bg);color:var(--m-done);font-weight:600}
.subform textarea,.subform input:not([type=file]){border:1px solid var(--line);border-radius:6px;padding:8px 10px;background:var(--surface);color:var(--ink);width:100%}
.posts{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.posts li{border:1px solid var(--line);border-radius:8px;padding:12px;background:var(--surface);display:flex;flex-direction:column;gap:4px}
.phead{display:flex;gap:16px;align-items:center}
.gpa{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px}
.gpa > div{display:flex;flex-direction:column;gap:2px}.gpa b{font-size:1.5rem;font-variant-numeric:tabular-nums}
ul.plain{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
tr.sub td{border-top:0;padding-top:0}
tr.total td{border-top:2px solid var(--line)}
@media (max-width:900px){.course-layout,.quiz-layout,.sgrid{grid-template-columns:minmax(0,1fr)}.cindex{display:none}.qnav{position:static}.qbox{grid-template-columns:minmax(0,1fr)}}
@media (max-width:860px){
  .topnav{order:3;width:100%;overflow-x:auto;flex-wrap:nowrap}
  .topnav button{white-space:nowrap}
  nav.side{flex-direction:row;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line);padding:8px max(16px,env(safe-area-inset-left,0px));gap:4px}
  nav.side .who{display:none}
  nav.side button{white-space:nowrap}
  .course,.wf{grid-template-columns:minmax(0,1fr)}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* sign-in, loading and save status */
html,body{margin:0}
.gate{min-height:100vh;display:grid;place-items:center;padding:24px 16px;background:var(--bg)}
.gate-card{width:100%;max-width:420px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:28px;display:flex;flex-direction:column;gap:14px;box-shadow:0 10px 30px rgba(0,0,0,.06)}
.gate-card h1{font-size:1.5rem}
.gate-card label{font-size:.82rem;font-weight:600;color:var(--muted)}
.gate-card input{border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:var(--surface);color:var(--ink);font:inherit;width:100%}
.gate-card .btn{width:100%;padding:10px 14px}
.gate-msg{font-size:.9rem;padding:10px 12px;border-radius:8px;background:var(--accent-soft);color:var(--accent-ink)}
.gate-msg.err{background:var(--crit-soft);color:var(--crit)}
.gate-bar{height:6px;border-radius:999px;background:var(--sunk);overflow:hidden}.gate-bar i{display:block;height:100%;background:var(--accent);width:0;transition:width .3s}
.savestate{font-size:.75rem;padding:3px 9px;border-radius:999px;white-space:nowrap;background:rgba(255,255,255,.12);color:var(--bar-muted)}
.savestate.saving{color:var(--bar-ink)}.savestate.error{background:var(--crit);color:#fff}
body.student-mode .savestate{background:var(--sunk);color:var(--muted)}
[hidden]{display:none!important}
/* imported Moodle content */
.rich img{max-width:100%;height:auto;border-radius:6px}
.rich iframe{max-width:100%;width:100%;aspect-ratio:16/9;height:auto;border:0;border-radius:8px;background:#000}
.rich video{max-width:100%;border-radius:8px}
.rich audio{width:100%}
.rich figure{margin:12px 0}.rich figcaption{font-size:.85rem;color:var(--muted)}
.rich a[href^="#cm-"]{font-weight:600}
.tpl-item.flash{outline:2px solid var(--accent);outline-offset:2px;border-radius:8px}
/* SCORM player */
.wide-player{max-width:none}
.player-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.player-bar h1{font-size:1.3rem!important}
.scorm-frame{width:100%;height:calc(100vh - 190px);min-height:520px;border:1px solid var(--line);border-radius:10px;background:#fff}
.preview-modal{position:fixed;inset:0;z-index:50;background:rgba(0,0,0,.55);display:flex;flex-direction:column;padding:16px;gap:10px}
.preview-modal .player-bar{background:var(--surface);border-radius:10px;padding:10px 14px}
.preview-modal .scorm-frame{flex:1;height:auto;min-height:0}
/* quiz answers typed in */
.qinput{border:1px solid var(--line);border-radius:6px;padding:7px 10px;background:var(--surface);color:var(--ink);min-width:min(100%,280px)}
.qtextarea{border:1px solid var(--line);border-radius:6px;padding:8px 10px;background:var(--surface);color:var(--ink);width:100%}
/* import log */
.implog{list-style:none;margin:0;padding:0;max-height:280px;overflow:auto;font-size:.84rem;display:flex;flex-direction:column;gap:2px}
.implog time{font-family:var(--f-mono);font-size:.74rem;color:var(--muted);margin-right:6px}
.implog .good{color:var(--good)}.implog .bad{color:var(--crit)}
.csum{padding:0 4px 12px;color:var(--ink)}

/* ---------- formatted course content (pages, syllabi, instructions) ---------- */
.rich{font-size:1rem;line-height:1.7;color:var(--ink);overflow-wrap:break-word;min-width:0}
.rich > :first-child{margin-top:0}
.rich p{margin:0 0 .85em}
.rich h1,.rich h2,.rich h3,.rich h4,.rich h5,.rich h6{font-family:var(--f-body);font-weight:700;line-height:1.3;margin:1.6em 0 .55em;color:var(--ink)}
.rich h1{font-size:1.55rem}.rich h2{font-size:1.3rem}.rich h3{font-size:1.12rem}.rich h4,.rich h5,.rich h6{font-size:1rem}
.rich ul,.rich ol{margin:.3em 0 1em;padding-left:1.5em}.rich li{margin:.2em 0}
.rich a{color:var(--m-link,#0f6cbf);text-decoration:underline;text-underline-offset:2px}
.rich blockquote{margin:1em 0;padding:.6em 1em;border-left:4px solid var(--accent);background:var(--sunk);border-radius:0 8px 8px 0}
.rich hr{border:0;border-top:1px solid var(--line);margin:1.6em 0}
.rich pre,.rich code{font-family:var(--f-mono);font-size:.88em;background:var(--sunk);border-radius:4px}
.rich pre{padding:12px;overflow:auto}
.rich .tablescroll{overflow-x:auto;margin:.6em 0 1.4em;border:1px solid var(--line);border-radius:10px;max-width:100%}
.rich table{width:100%;border-collapse:collapse;font-size:.92rem;margin:0;background:var(--surface)}
.rich th,.rich td{white-space:normal;vertical-align:top;padding:9px 12px;border:0;border-bottom:1px solid var(--line);border-right:1px solid var(--line);text-transform:none;letter-spacing:0;font-size:inherit;color:inherit;background:transparent;min-width:72px}
.rich tr > :last-child{border-right:0}
.rich tbody tr:last-child > *{border-bottom:0}
.rich thead th,.rich thead td,.rich table > tbody:first-child > tr:first-child > *,.rich table > tr:first-child > *{background:var(--sunk);font-weight:700}
.rich tbody tr:nth-child(even) > *{background:color-mix(in srgb, var(--sunk) 45%, transparent)}
.rich td p,.rich th p{margin:0}
.rich img{display:block;margin:.6em 0}
/* the page itself: a centred, readable document */
.page-body{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:clamp(20px,4vw,44px) clamp(18px,5vw,56px);box-shadow:0 1px 2px rgba(16,24,40,.04),0 6px 24px rgba(16,24,40,.05)}
.spage .page-body.rich{padding:clamp(20px,4vw,44px) clamp(18px,5vw,56px);border:1px solid var(--line)}
.spage.narrow{max-width:960px}
details .rich .tablescroll{margin:.4em 0 1em}

/* Section roster: student progress */
.prog{display:flex;flex-direction:column;gap:4px;min-width:120px}
.progbar{display:block;height:7px;border-radius:99px;background:var(--line,#e3e7ee);overflow:hidden}
.progbar i{display:block;height:100%;background:var(--accent,#1f6f5c);border-radius:99px}
.prog small{color:var(--muted,#667);font-variant-numeric:tabular-nums}
tr.rowsel td{background:var(--accent-soft,#eef6f3)}
.pstats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin:4px 0 14px}
.pstats>div{border:1px solid var(--line,#e3e7ee);border-radius:10px;padding:10px 12px;display:flex;flex-direction:column;gap:2px}
.pstats span{font-size:.78rem;color:var(--muted,#667)}
.pstats b{font-size:1.35rem;font-variant-numeric:tabular-nums}
.pstats b.sm{font-size:.95rem}
.pstats small{color:var(--muted,#667)}
.progtable td{white-space:normal;vertical-align:top}
.progtable td:first-child{min-width:240px}
.progtable .modrow td{background:var(--sunk);font-weight:600;font-size:.85rem}
.progtable .ptext{margin-top:6px;padding:8px 10px;border-left:3px solid var(--line,#e3e7ee);background:var(--sunk);border-radius:4px;white-space:pre-wrap;max-width:640px;font-size:.88rem}
.progtable .mi{display:inline-grid;width:26px;height:26px;vertical-align:middle;margin-right:6px}.progtable .mi svg{width:17px;height:17px}