:root{
  --bg:#f7f4ff; --card:#fff; --ink:#24213a; --muted:#6b6785; --line:#e6e0f5;
  --pri:#6a4ce0; --pri2:#8f6bff; --priSoft:#eee8ff; --ok:#14966f; --okSoft:#e3f7ef; --bad:#d6455d; --badSoft:#fde8ec;
  --prog:#0f9f8f; --progSoft:#dff6f2; --mast:#e0567a; --mastSoft:#fde6ed; --gold:#f5b301; --shadow:0 4px 18px rgba(60,40,140,.08);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:"Rubik","Assistant","Heebo","Segoe UI",system-ui,-apple-system,Arial,sans-serif;background:var(--bg);color:var(--ink);font-size:16px;line-height:1.5;min-height:100vh;display:flex;flex-direction:column}
button,input,select{font:inherit;color:inherit}
:focus-visible{outline:3px solid #ffb703;outline-offset:2px}
main:focus{outline:none}
[hidden]{display:none!important}
.t-top{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;background:linear-gradient(120deg,#6a4ce0,#9b6bff 60%,#ff8fab);color:#fff;padding:12px 16px}
.t-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.1rem}
.t-brand small{font-weight:500;opacity:.9}
.t-logo{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.2);font-size:1.3rem}
.t-nav{display:flex;gap:8px}
.t-link{background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.35);color:#fff;text-decoration:none;border-radius:999px;padding:6px 14px;cursor:pointer;font-size:.92rem}
.t-link:hover{background:rgba(255,255,255,.28)}
main{flex:1;width:100%;max-width:1100px;margin:0 auto;padding:18px 14px 40px}
h1,h2,h3{margin:.1em 0 .4em;line-height:1.25}
h1{font-size:1.5rem}h2{font-size:1.25rem}h3{font-size:1.05rem}
.t-card{background:var(--card);border-radius:20px;padding:18px;box-shadow:var(--shadow);margin-bottom:16px}
.t-login{max-width:440px;margin:24px auto}
.t-muted{color:var(--muted)}
.t-small{font-size:.88rem}
.t-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.t-label{display:block;font-weight:600;margin:10px 0 6px}
.t-input{border:2px solid var(--line);border-radius:12px;padding:10px 12px;background:#fff;min-height:44px;min-width:0}
.t-input:focus{border-color:var(--pri2);outline:none}
.t-input.small{min-height:36px;padding:5px 8px}
.t-codeinput{width:100%;letter-spacing:.12em;text-align:center;font-size:1.1rem;margin-bottom:12px}
.t-pin{width:9ch;text-align:center;font-size:1.6rem;letter-spacing:.3em;margin:6px 0 12px}
.t-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:12px;padding:10px 18px;font-weight:700;cursor:pointer;background:var(--priSoft);color:var(--pri);min-height:44px}
.t-btn.primary{background:var(--pri);color:#fff;box-shadow:0 3px 10px rgba(106,76,224,.3)}
.t-btn.ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}
.t-btn.danger{background:var(--badSoft);color:var(--bad)}
.t-btn.small{min-height:36px;padding:6px 12px;font-size:.9rem}
.t-btn:disabled{opacity:.5;cursor:default}
.t-login .t-btn{width:100%}
.t-err{color:var(--bad);background:var(--badSoft);border-radius:10px;padding:8px 12px;margin:10px 0 0}
.t-inline{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.t-inline .t-input{flex:1 1 160px}
.t-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin:8px 0 10px}
.t-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
.t-class{display:flex;flex-direction:column;gap:10px;margin:0}
.t-class h3{font-size:1.2rem;margin:0}
.t-classtop{display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.t-codebox{display:flex;flex-direction:column;align-items:center;background:var(--priSoft);border-radius:14px;padding:8px 12px}
.t-coderow{display:flex;align-items:center;justify-content:space-between;gap:8px;background:var(--priSoft);border-radius:14px;padding:8px 12px}
.t-code{font-family:"Segoe UI",system-ui,monospace;font-weight:800;font-size:1.9rem;letter-spacing:.18em;color:var(--pri);direction:ltr;unicode-bidi:isolate}
.t-switch{display:flex;align-items:center;justify-content:space-between;gap:10px;border:1px solid var(--line);border-radius:14px;padding:8px 12px;cursor:pointer}
.t-switch input{position:absolute;opacity:0;width:1px;height:1px}
.t-track{flex:0 0 auto;width:48px;height:28px;border-radius:999px;background:#d9d3ea;position:relative;transition:background .2s}
.t-track::after{content:"";position:absolute;top:3px;right:3px;width:22px;height:22px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.25);transition:right .2s}
.t-switch input:checked + .t-track{background:var(--ok)}
.t-switch input:checked + .t-track::after{right:23px}
.t-switch input:focus-visible + .t-track{outline:3px solid #ffb703;outline-offset:2px}
.t-swtext b{display:block}
.t-actions{display:flex;flex-wrap:wrap;gap:8px}
.t-classhead{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.t-explain{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:6px;font-size:.9rem}
.t-explain>div{background:#fff;border-radius:14px;padding:10px 12px;border:1px solid var(--line)}
.t-tag{display:inline-block;border-radius:999px;padding:1px 10px;font-size:.82rem;margin-left:4px}
.t-tag.prog{background:var(--progSoft);color:var(--prog)}
.t-tag.mast{background:var(--mastSoft);color:var(--mast)}
.t-empty{text-align:center;padding:28px 12px;color:var(--muted);background:#fff;border-radius:20px;border:2px dashed var(--line)}

/* students table */
.t-table{width:100%;border-collapse:separate;border-spacing:0;background:#fff;border-radius:18px;box-shadow:var(--shadow);overflow:hidden}
.t-table th{font-size:.8rem;color:var(--muted);font-weight:600;text-align:start;padding:10px;background:#faf8ff;border-bottom:1px solid var(--line)}
.t-table th.prog{color:var(--prog)} .t-table th.mast{color:var(--mast)}
.t-table td{padding:10px;border-bottom:1px solid var(--line);vertical-align:middle}
.t-table tr.t-row{cursor:pointer}
.t-table tr.t-row:hover td{background:#fcfbff}
.t-nick{font-weight:700}
.t-nick .t-av{display:inline-block;vertical-align:middle;width:30px;height:30px;margin-left:6px}
.t-nick .t-av svg{width:100%;height:100%}
.t-badge{display:inline-block;font-size:.75rem;border-radius:999px;padding:1px 8px;background:var(--badSoft);color:var(--bad);margin-inline-start:6px;font-weight:600}
.t-bar{height:8px;border-radius:9px;background:var(--line);overflow:hidden;min-width:70px;margin-top:4px}
.t-bar i{display:block;height:100%;background:linear-gradient(90deg,#2fb7a5,var(--prog))}
.t-num{font-weight:700;font-variant-numeric:tabular-nums}
.t-mastv{color:var(--mast)}
.t-sub{display:block;font-size:.78rem;color:var(--muted)}
.t-medals{white-space:nowrap}
.t-detail td{background:#faf8ff;padding:12px}
.t-stations{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:8px}
.t-region{grid-column:1/-1;font-weight:700;margin-top:6px;color:var(--pri)}
.t-st{display:grid;grid-template-columns:auto 1fr;gap:2px 8px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px 10px;font-size:.85rem}
.t-st .t-md{grid-row:span 2;font-size:1.4rem;align-self:center;width:30px;text-align:center}
.t-st .t-md.none{opacity:.3}
.t-st b{font-weight:600}
.t-rowacts{display:flex;gap:6px;flex-wrap:wrap}
.t-overlay{position:fixed;inset:0;background:rgba(30,20,70,.45);display:grid;place-items:center;padding:16px;z-index:50}
.t-modal{width:min(380px,100%);text-align:center}
.t-modal .t-inline{justify-content:center}
.t-toast{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);background:#24213a;color:#fff;border-radius:999px;padding:10px 18px;z-index:60;box-shadow:0 6px 20px rgba(0,0,0,.2);max-width:90vw;text-align:center}
.t-foot{text-align:center;color:var(--muted);font-size:.8rem;padding:14px}
.t-loading{color:var(--muted);text-align:center;padding:20px}

@media (max-width:760px){
  .t-explain{grid-template-columns:1fr}
  .t-code{font-size:1.6rem}
  .t-table,.t-table tbody,.t-table tr,.t-table td{display:block;width:100%}
  .t-table thead{display:none}
  .t-table{background:transparent;box-shadow:none;border-radius:0}
  .t-table tr.t-row{background:#fff;border-radius:16px 16px 0 0;box-shadow:var(--shadow);margin-top:12px;display:grid;grid-template-columns:1fr 1fr;padding:6px 4px}
  .t-table tr.t-row.t-solo{border-radius:16px}
  .t-table tr.t-row td{border:0;padding:6px 10px}
  .t-table tr.t-row td[data-label]::before{content:attr(data-label);display:block;font-size:.72rem;color:var(--muted);font-weight:600}
  .t-table tr.t-row td.t-nick,.t-table tr.t-row td.t-actcell{grid-column:1/-1}
  .t-table tr.t-detail{background:#faf8ff;border-radius:0 0 16px 16px;box-shadow:var(--shadow)}
  .t-table tr.t-detail td{border:0;border-radius:0 0 16px 16px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* multi-teacher */
.t-who{margin-inline-start:10px;background:rgba(255,255,255,.22);border-radius:999px;padding:2px 10px;font-size:.85rem;font-weight:600}
.t-teachers{margin-top:20px;border:2px dashed var(--line)}
.t-teachers h2 small{font-weight:500}
.t-tlist{display:flex;flex-direction:column;gap:8px;margin-top:12px}
.t-trow{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:10px 12px;border:1px solid var(--line);border-radius:14px}
.t-trow.off{opacity:.65;background:#faf9fd}
.t-tinfo{display:flex;flex-direction:column}
.t-empty.small{padding:12px;font-size:.92rem}
.t-codemodal{max-width:440px;text-align:center}
.t-bigcode{font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;font-size:1.45rem;font-weight:700;letter-spacing:.08em;background:var(--priSoft);color:var(--pri);border-radius:14px;padding:14px 8px;margin:10px 0;user-select:all;word-break:break-all}
.t-warn{background:#fff6e0;border-radius:10px;padding:8px 10px;color:#7a5500}
.t-cbtns{justify-content:center;margin-bottom:6px}

/* קרדיט (נטע, 4.11) */
.t-foot .credit{margin:6px 0 0;font-size:.74rem;opacity:1}