:root{
  --bg:#eef3f1; --card:#ffffff; --ink:#17211f; --muted:#4c5b57;
  --brand:#123332; --brand2:#17635c; --accent:#ffb703; --line:#d6e0dc;
  --good:#146c43; --bad:#b3261e; --radius:16px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.45}
.topbar{position:sticky;top:0;z-index:5;background:var(--brand);color:#fff;padding:14px 16px;display:flex;justify-content:space-between;gap:12px;align-items:flex-start;flex-wrap:wrap}
.topbar h1{margin:0;font-size:1.5rem;letter-spacing:.2px}
.tagline{margin:2px 0 0;font-size:.95rem}
.byline{margin:2px 0 0;font-size:.8rem;opacity:.8}
main{max-width:760px;margin:0 auto;padding:14px 14px 40px;display:flex;flex-direction:column;gap:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:0 1px 4px rgba(18,51,50,.06)}
.card h2{margin:0 0 6px;font-size:1.2rem}
.card h3{margin:16px 0 6px;font-size:1.02rem}
.card p{margin:6px 0}
.blurb{background:#eef7f4;border-left:4px solid var(--brand2);padding:8px 10px;border-radius:8px}
.small{font-size:.88rem;color:var(--muted)}
.error{color:var(--bad);min-height:1.2em;font-size:.92rem}
.field-label{display:block;font-weight:600;margin:10px 0 4px;font-size:.92rem}
.display,.textin{width:100%;padding:12px;border:1.5px solid var(--line);border-radius:12px;font-size:1.05rem;background:#fbfdfc;color:var(--ink)}
.display{font-size:1.35rem;font-weight:600;letter-spacing:.3px}
textarea.textin{resize:vertical}
.result{margin-top:12px;background:#fff8e1;border:1.5px solid var(--accent);border-radius:12px;padding:12px;font-size:1.08rem;font-weight:600;word-break:break-word}
.result-block{margin-top:12px;background:#f4f8f6;border:1px solid var(--line);border-radius:12px;padding:12px}
.result-block table{width:100%;border-collapse:collapse}
.result-block td{padding:5px 4px;border-bottom:1px solid var(--line)}
.result-block td:first-child{color:var(--muted)}
.result-block td:last-child{text-align:right;font-weight:700}
button{font:inherit;cursor:pointer;border-radius:12px;border:1px solid var(--line);background:#f2f5f4;color:var(--ink);padding:11px 14px;min-height:48px;touch-action:manipulation}
button:active{transform:scale(.98)}
.primary{background:var(--brand2);color:#fff;border-color:var(--brand2);font-weight:700}
.ghost{background:#fff}
.wide{width:100%}
.row{display:flex;margin-top:10px}
.gap{gap:10px}
.gap>*{flex:1}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mode-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}
.mode-btn{font-weight:700;background:#eef3f1}
.mode-btn.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.segmented{display:flex;border:1px solid rgba(255,255,255,.4);border-radius:10px;overflow:hidden}
.seg{background:transparent;color:#fff;border:0;border-radius:0;min-height:40px;padding:8px 10px}
.seg.active{background:var(--accent);color:#17211f;font-weight:700}
.angle-label{display:block;font-size:.78rem;opacity:.85;margin-bottom:4px}
.angle-box{text-align:right}
.keypad{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:12px}
.keypad button{padding:10px 4px;font-size:1rem;font-weight:600;min-height:52px}
.keypad button.fn{background:#e4efec;color:var(--brand);font-size:.88rem}
.keypad button.op{background:#123332;color:#fff}
.keypad button.util{background:#ffe9a8}
.history{margin:6px 0 0;padding-left:18px;color:var(--muted);font-size:.92rem}
canvas{width:100%;height:auto;background:#fbfdfc;border:1px solid var(--line);border-radius:12px;margin-top:12px}
.flow-list{display:flex;flex-direction:column;gap:10px;margin-top:10px}
.flow-btn{text-align:left;background:#eef7f4;border-color:var(--brand2)}
.flow-btn strong{display:block;font-size:1rem}
.flow-btn span{font-size:.88rem;color:var(--muted)}
.crumbs{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.crumb{font-size:.78rem;padding:4px 9px;border-radius:999px;background:#e4efec;color:var(--muted)}
.crumb.now{background:var(--brand);color:#fff;font-weight:700}
.crumb.done{background:var(--brand2);color:#fff}
.work-list{padding-left:20px}
.work-list li{margin-bottom:10px}
.work-list .why{display:block;color:var(--muted);font-size:.88rem}
.footer{text-align:center;color:var(--muted);font-size:.88rem;padding:4px 10px}
details{margin-top:12px}
summary{font-weight:600;cursor:pointer;padding:6px 0}
.hidden-by-mode{display:none !important}
.hidden-by-proctor{display:none !important}
.proctor-cols{align-items:start}
.proctor-status{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;background:#fff8e1;border:1.5px solid var(--accent);border-radius:12px;padding:10px 12px;margin:10px 0}
.proctor-status[hidden]{display:none}
.pick-group{border:1px solid var(--line);border-radius:12px;padding:10px 12px;margin:10px 0}
.pick-group legend{font-weight:700;font-size:.92rem;padding:0 4px}
.pick-group label{display:block;padding:5px 0;font-size:.98rem}
.pick-group input{width:20px;height:20px;vertical-align:-4px;margin-right:8px}
.session-code{font-size:1.6rem;letter-spacing:4px;background:#eef7f4;border:1px solid var(--brand2);border-radius:10px;padding:2px 12px}
.roster{list-style:none;margin:8px 0;padding:0;display:flex;flex-direction:column;gap:8px}
.roster-item{display:flex;align-items:center;gap:10px;flex-wrap:wrap;border:1px solid var(--line);border-radius:12px;padding:8px 10px;background:#fbfdfc}
.roster-name{font-weight:700}
.roster-detail{color:var(--muted);font-size:.88rem;margin-left:auto}
.pill{font-size:.78rem;font-weight:700;padding:4px 10px;border-radius:999px;white-space:nowrap}
.pill-in{background:#e2f2e8;color:var(--good)}
.pill-away{background:#fdecea;color:var(--bad)}
.pill-lost{background:#eceff1;color:#455a54}
.mode-btn:disabled{opacity:.4;cursor:not-allowed}
button.danger{background:#fff;border-color:var(--bad);color:var(--bad);font-weight:700;margin-top:10px}
#printArea{display:none}
@media print{
  .topbar,main{display:none !important}
  #printArea{display:block;font-family:Georgia,serif;color:#000;padding:24px}
  #printArea h1{font-size:1.3rem}
  #printArea pre{white-space:pre-wrap;font:inherit;font-size:.95rem;line-height:1.5}
}
@media (min-width:640px){
  .mode-grid{grid-template-columns:repeat(4,1fr)}
  .keypad{grid-template-columns:repeat(7,1fr)}
  .topbar{padding:18px 22px}
}
@media (max-width:380px){
  .keypad button{font-size:.9rem}
}