:root{--bad:var(--danger);--ui:var(--font-ui);--serif:var(--font-serif);--mono:var(--font-mono);--r:var(--r-md);--hl:color-mix(in srgb,var(--highlight) 42%,transparent);--hl-strong:color-mix(in srgb,var(--highlight) 70%,transparent);--warn:var(--amber);}
  *{box-sizing:border-box}
  html,body{height:100%}
  body{
    margin:0;background:var(--bg);color:var(--text);font-family:var(--ui);
    font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;
    display:flex;flex-direction:column;overflow:hidden;
  }
  button{font-family:inherit;cursor:pointer}
  input,textarea,select{font-family:inherit}
  a{color:var(--accent);text-decoration:none}
  a:hover{text-decoration:underline}
  ::selection{background:var(--hl-strong);color:var(--on-highlight)}

  /* ---------- masthead ---------- */
  header{
    flex:0 0 auto;display:flex;align-items:center;gap:18px;
    padding:11px 18px;border-bottom:1px solid var(--line);
    background:var(--bg);
  }
  .brand{display:flex;align-items:baseline;gap:11px;min-width:0}
  .brand h1{font-family:var(--serif);font-weight:500;font-size:21px;letter-spacing:-.01em;margin:0;white-space:nowrap}
  .brand h1 em{font-style:italic;color:var(--accent)}
  .ton{font-style:italic;color:var(--accent)}
  .tenant{font-family:var(--mono);font-size:10.5px;color:var(--muted);
    border:1px solid var(--line);border-radius:100px;padding:3px 9px;white-space:nowrap}
  .tenant b{color:var(--text);font-weight:500}
  .spacer{flex:1}
  .who{display:flex;align-items:center;gap:8px}
  .who label{font-size:11.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
  select,.btn{background:var(--surface-2);color:var(--text);border:1px solid var(--line);
    border-radius:8px;padding:7px 11px;font-size:13px}
  select{padding-right:26px}
  .btn{display:inline-flex;align-items:center;gap:7px;transition:.14s}
  .btn:hover{background:var(--raised);border-color:var(--line)}
  .btn:focus-visible,select:focus-visible,textarea:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
  .btn.accent{background:var(--accent-deep);border-color:transparent;color:var(--on-accent);font-weight:600}
  .btn.accent:hover{background:var(--accent)}
  .btn.ghost{background:transparent}
  .btn.sm{padding:5px 9px;font-size:12px}
  .btn[disabled]{opacity:.5;cursor:not-allowed}
  .av{border-radius:50%;display:grid;place-items:center;font-weight:700;color:var(--on-accent);flex:0 0 auto}

  /* ---------- layout ---------- */
  main{flex:1 1 auto;min-height:0;overflow-y:auto}
  .inner{max-width:960px;margin:0 auto;padding:26px 26px 44px}

  /* preview banner (staff acting-as) */
  .previewbar{display:none;align-items:center;gap:11px;background:color-mix(in srgb, var(--author-1) 10%, transparent);
    border:1px solid color-mix(in srgb, var(--author-1) 35%, transparent);border-radius:11px;padding:11px 15px;margin-bottom:20px;font-size:13px;color:var(--text)}
  .previewbar.show{display:flex}
  .previewbar .tag{font-family:var(--mono);font-size:9.5px;text-transform:uppercase;letter-spacing:.06em;
    color:var(--amber);border:1px solid color-mix(in srgb, var(--author-1) 50%, transparent);border-radius:100px;padding:2px 9px;flex:0 0 auto}

  .pg-head{margin-bottom:22px}
  .pg-head .eyebrow{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin:0 0 8px}
  .pg-head h2{font-family:var(--serif);font-weight:500;font-size:28px;margin:0 0 6px;letter-spacing:-.01em}
  .pg-head p{margin:0;color:var(--muted);max-width:64ch}

  .grid{display:grid;grid-template-columns:300px 1fr;gap:20px;align-items:start}
  @media(max-width:820px){ .grid{grid-template-columns:1fr} }

  .card{border:1px solid var(--line);border-radius:14px;background:var(--surface);padding:20px 22px;margin-bottom:20px}
  .card:last-child{margin-bottom:0}
  .card-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:16px;flex-wrap:wrap}
  .card-head h3{font-family:var(--serif);font-weight:500;font-size:18px;margin:0}
  .card-head .note{font-size:11.5px;color:var(--faint)}

  /* identity card */
  .idcard{text-align:center;position:sticky;top:0}
  .idcard .bigav{width:96px;height:96px;font-size:40px;margin:2px auto 14px}
  .idcard h3{font-family:var(--serif);font-weight:500;font-size:22px;margin:0}
  .idcard .pref{font-size:12.5px;color:var(--muted);margin-top:2px}
  .idcard .email{font-family:var(--mono);font-size:11.5px;color:var(--faint);margin-top:6px;word-break:break-all}
  .managed{margin-top:18px;border-top:1px solid var(--line-2);padding-top:16px;text-align:left}
  .managed .mk{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--faint);display:flex;align-items:center;gap:7px;margin-bottom:12px}
  .managed .lock{font-size:11px}
  .mrow{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:7px 0;font-size:12.5px}
  .mrow .k{color:var(--muted)}
  .mrow .v{font-weight:600;text-align:right}
  .rolepill{font-family:var(--mono);font-size:10px;font-weight:600;border-radius:100px;padding:3px 10px;text-transform:capitalize}
  .rolepill.student{color:var(--accent);border:1px solid color-mix(in srgb, var(--accent) 40%, transparent)}
  .rolepill.teacher{color:var(--ok);border:1px solid color-mix(in srgb,var(--ok) 40%,transparent)}
  .rolepill.admin{color:var(--amber);border:1px solid color-mix(in srgb, var(--author-1) 40%, transparent)}
  .status{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600}
  .status .d{width:7px;height:7px;border-radius:50%}
  .status.active .d{background:var(--ok)} .status.active{color:var(--ok)}
  .status.suspended .d{background:var(--bad)} .status.suspended{color:var(--bad)}
  .managed .adminnote{font-size:10.5px;color:var(--faint);line-height:1.45;margin-top:12px;font-style:italic}
  .managed .adminnote a{font-style:normal}

  /* forms */
  .field{margin-bottom:15px}
  .field:last-child{margin-bottom:0}
  .field label{display:block;font-size:11.5px;color:var(--muted);margin-bottom:5px;text-transform:uppercase;letter-spacing:.05em}
  .in{width:100%;background:var(--bg);color:var(--text);border:1px solid var(--line);border-radius:9px;
    padding:9px 11px;font-size:13.5px;outline:none}
  .in::placeholder{color:var(--faint)}
  textarea.in{resize:vertical;min-height:78px;line-height:1.55}
  .field-row{display:flex;gap:14px;flex-wrap:wrap}
  .field-row .field{flex:1;min-width:150px}
  .hint{font-size:11px;color:var(--faint);margin-top:5px;line-height:1.45}

  /* colour picker */
  .swatches{display:flex;gap:9px;flex-wrap:wrap}
  .swatch{width:30px;height:30px;border-radius:50%;border:2px solid transparent;cursor:pointer;transition:.12s;position:relative}
  .swatch:hover{transform:scale(1.08)}
  .swatch.on{border-color:var(--text);box-shadow:0 0 0 2px var(--bg),0 0 0 4px currentColor}
  .swatch.on::after{content:"✓";position:absolute;inset:0;display:grid;place-items:center;color:var(--on-accent);font-size:14px;font-weight:800}

  /* notification prefs */
  .pref-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px solid var(--line-2)}
  .pref-row:last-child{border-bottom:0}
  .pref-row .pl{min-width:0}
  .pref-row .pl .t{font-weight:600;font-size:13.5px}
  .pref-row .pl .d{font-size:11.5px;color:var(--faint);margin-top:2px}
  .toggle{position:relative;width:42px;height:24px;border-radius:100px;background:var(--surface-2);border:1px solid var(--line);
    flex:0 0 auto;transition:.16s;cursor:pointer}
  .toggle::after{content:"";position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;background:var(--faint);transition:.16s}
  .toggle.on{background:var(--accent-soft);border-color:var(--accent)}
  .toggle.on::after{left:20px;background:var(--accent)}
  .toggle[aria-disabled="true"]{opacity:.45;cursor:not-allowed}
  .seg{display:inline-flex;gap:3px;background:var(--bg);border:1px solid var(--line);border-radius:9px;padding:3px;flex:0 0 auto}
  .seg button{border:0;background:transparent;color:var(--muted);border-radius:6px;padding:6px 12px;font-size:12px;font-weight:600}
  .seg button.on{background:var(--surface-2);color:var(--text)}
  .seg.dim{opacity:.5;pointer-events:none}

  /* save bar */
  .savebar{position:sticky;bottom:0;display:flex;align-items:center;gap:12px;margin-top:4px;
    background:var(--bg);padding:16px 2px 2px}
  .savebar .dirty{font-size:12px;color:var(--warn);display:none}
  .savebar .dirty.show{display:inline}
  .savebar .saved{font-size:12px;color:var(--ok);display:none;align-items:center;gap:6px}
  .savebar .saved.show{display:inline-flex}
  .savebar .sp{flex:1}

  /* change password mini form */
  .pw-form{display:none;margin-top:14px;border-top:1px solid var(--line-2);padding-top:15px}
  .pw-form.show{display:block}

  /* ---------- drawer (audit log) ---------- */
  #drawer{flex:0 0 auto;border-top:1px solid var(--line);background:var(--surface);
    display:flex;flex-direction:column;max-height:28vh;transition:max-height .2s}
  #drawer.min{max-height:42px}
  .drawer-tabs{display:flex;align-items:center;gap:8px;padding:8px 14px;border-bottom:1px solid var(--line-2)}
  .drawer-tabs .lbl{font-size:12px;font-weight:600;color:var(--muted);display:inline-flex;align-items:center;gap:7px}
  .drawer-tabs .dot{font-family:var(--mono);font-size:10px;color:var(--faint)}
  .drawer-tools{margin-left:auto;display:flex;gap:8px}
  #evWrap{flex:1;overflow:auto;padding:8px 14px 14px}
  table.ev{width:100%;border-collapse:collapse;font-size:11.5px}
  table.ev th{text-align:left;font-family:var(--mono);font-size:9.5px;text-transform:uppercase;letter-spacing:.06em;
    color:var(--faint);font-weight:500;padding:5px 9px;border-bottom:1px solid var(--line-2);position:sticky;top:0;background:var(--surface)}
  table.ev td{padding:5px 9px;border-bottom:1px solid var(--line-2);color:var(--muted);vertical-align:top}
  table.ev td.type{font-family:var(--mono);color:var(--accent)}
  table.ev tr.fresh td{background:color-mix(in srgb, var(--accent) 7%, transparent)}
  #drawer.min #evWrap{display:none}

  .toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);
    background:var(--raised);border:1px solid var(--line);border-radius:10px;padding:10px 16px;
    font-size:13px;opacity:0;pointer-events:none;transition:.22s;z-index:80;box-shadow:none}
  .toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
  .toast.ok{border-color:color-mix(in srgb,var(--ok) 50%,transparent)}

  ::-webkit-scrollbar{width:11px;height:11px}
  ::-webkit-scrollbar-thumb{background:var(--line);border-radius:8px;border:3px solid transparent;background-clip:padding-box}