:root{
  --bg:#F3F4FB; --surface:rgba(255,255,255,.82); --surface-solid:#FFFFFF; --line:#E4E3EF;
  --ink:#15141c; --ink-2:#5a5866; --accent:#C23A63; --accent-ink:#FFFFFF;
  --pink:#CC3A66; --pink-bg:#FBE4EB; --orange:#B4520F; --orange-bg:#FDEBDC;
  --violet:#5B5DD6; --violet-bg:#E7E7FB; --sky:#1A7DAD; --sky-bg:#DDF0F8;
  --track:#E9E8F2; --shadow:0 12px 30px rgba(60,40,110,.10);
  --grad:linear-gradient(120deg,#ff9152 0%,#f5638f 38%,#8b8cff 72%,#4fc3f0 100%);
  --display:'Unbounded','Inter',system-ui,sans-serif; --body:'Inter',-apple-system,'Segoe UI',system-ui,sans-serif;
  box-sizing:border-box; padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){ :root:not([data-theme="light"]){
  --bg:#14131b; --surface:rgba(32,30,44,.85); --surface-solid:#211f2d; --line:#34314a;
  --ink:#F1F0F7; --ink-2:#ABA8BC; --accent:#F0648C; --accent-ink:#15141c;
  --pink:#F58BAA; --pink-bg:#3A2130; --orange:#F2A56E; --orange-bg:#3A2A1E;
  --violet:#A9AAFF; --violet-bg:#2A2A4A; --sky:#7CCDF0; --sky-bg:#173445;
  --track:#2E2C3F; --shadow:0 12px 30px rgba(0,0,0,.35);
}}
:root[data-theme="dark"]{
  --bg:#14131b; --surface:rgba(32,30,44,.85); --surface-solid:#211f2d; --line:#34314a;
  --ink:#F1F0F7; --ink-2:#ABA8BC; --accent:#F0648C; --accent-ink:#15141c;
  --pink:#F58BAA; --pink-bg:#3A2130; --orange:#F2A56E; --orange-bg:#3A2A1E;
  --violet:#A9AAFF; --violet-bg:#2A2A4A; --sky:#7CCDF0; --sky-bg:#173445;
  --track:#2E2C3F; --shadow:0 12px 30px rgba(0,0,0,.35);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-padding-top:calc(env(safe-area-inset-top,0px) + 16px)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.5;-webkit-font-smoothing:antialiased}
.wrap{max-width:1040px;margin:0 auto;padding:28px 20px 64px}
.stripe{height:8px;border-radius:8px;background:var(--grad);margin-bottom:28px}
h1,h2,h3{font-family:var(--display);margin:0;letter-spacing:-.01em}
h1{font-size:clamp(30px,5.4vw,52px);font-weight:700;line-height:1.08;text-wrap:balance}
.lead{color:var(--ink-2);max-width:60ch;margin:12px 0 0;text-wrap:pretty}
.card{background:var(--surface);border:1.5px solid color-mix(in srgb,var(--surface-solid) 70%,transparent);border-radius:18px;box-shadow:var(--shadow)}
button,input{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--violet);outline-offset:2px;border-radius:10px}

/* header row */
.top{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:end}
.ring{position:relative;width:150px;height:150px;flex-shrink:0}
.ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.ring .num{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
.ring .num b{font-family:var(--display);font-size:34px;font-weight:700;line-height:1}
.ring .num span{font-size:13px;color:var(--ink-2);margin-top:4px}

.tabs{display:flex;gap:8px;margin:28px 0 0;flex-wrap:wrap}
.tab{min-height:44px;padding:0 18px;border-radius:999px;border:1.5px solid var(--line);background:var(--surface-solid);cursor:pointer;font-weight:600}
.tab[aria-selected="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}

.me{display:flex;gap:14px;flex-wrap:wrap;align-items:flex-end;padding:18px 20px;margin-top:20px}
.me label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:600;color:var(--ink-2);flex:1 1 260px}
.me input{min-height:46px;border-radius:12px;border:1.5px solid var(--line);background:var(--surface-solid);padding:0 14px;font-size:17px;color:var(--ink)}
.status{font-size:14px;color:var(--ink-2);flex:1 1 220px;padding-bottom:12px}
.btn{min-height:46px;padding:0 18px;border-radius:12px;border:0;background:var(--accent);color:var(--accent-ink);font-weight:700;cursor:pointer}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}

/* the map: 27 tiles */
.map{margin-top:28px;padding:20px}
.map-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.map-head h2{font-size:20px;font-weight:600}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--ink-2)}
.legend i{display:inline-block;width:12px;height:12px;border-radius:4px;margin-right:6px;vertical-align:-1px}
.tiles{display:grid;grid-template-columns:repeat(9,1fr);gap:8px}
.tile{position:relative;aspect-ratio:1/1.05;min-height:52px;border-radius:14px;border:1.5px solid var(--line);background:var(--surface-solid);cursor:pointer;overflow:hidden;padding:0;display:flex;flex-direction:column;justify-content:space-between;align-items:flex-start}
.tile .fill{position:absolute;left:0;right:0;bottom:0;height:0;transition:height .35s ease}
.tile .n{position:relative;font-family:var(--display);font-weight:700;font-size:clamp(15px,2.6vw,24px);padding:8px 0 0 10px;line-height:1}
.tile .p{position:relative;font-size:12px;font-weight:700;padding:0 0 7px 10px}
.blocks-key{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:12px;font-size:13px;color:var(--ink-2)}

/* sections */
.section{margin-top:40px}
.section > h2{font-size:22px;font-weight:600;margin-bottom:4px}
.section > p{margin:0 0 14px;color:var(--ink-2);font-size:15px}
details.task{margin-top:10px;overflow:hidden}
details.task > summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:52px 1fr auto;gap:14px;align-items:center;padding:14px 18px;min-height:64px}
details.task > summary::-webkit-details-marker{display:none}
.badge{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-family:var(--display);font-weight:700;font-size:20px;background:var(--bg);border:1.5px solid var(--line)}
.ttl{display:block;font-weight:700;font-size:17px;line-height:1.3}
.meta{display:block;font-size:13px;color:var(--ink-2);margin-top:4px}
.bar{display:block;height:8px;border-radius:8px;background:var(--track);margin-top:8px;overflow:hidden}
.bar > span{display:block;height:100%;border-radius:8px;transition:width .35s ease}
.pct{font-family:var(--display);font-weight:600;font-size:20px;min-width:62px;text-align:right}
.chev{display:inline-block;transition:transform .2s ease;color:var(--ink-2);margin-left:6px;font-size:14px}
details[open] .chev{transform:rotate(90deg)}
.items{padding:0 18px 18px 84px;display:flex;flex-direction:column;gap:4px}
.item{display:grid;grid-template-columns:28px 1fr;gap:10px;align-items:start;padding:8px 10px;border-radius:12px;cursor:pointer;min-height:44px}
.item:hover{background:color-mix(in srgb,var(--track) 60%,transparent)}
.item input{width:22px;height:22px;margin:2px 0 0;accent-color:var(--accent);cursor:pointer}
.item span{text-wrap:pretty}
.item input:checked + span{color:var(--ink-2)}
.more{font-size:14px;margin:6px 10px 0}
.more a{color:var(--violet);font-weight:600}

/* teacher */
.class-wrap{margin-top:20px;padding:18px}
.class-head{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;align-items:baseline;margin-bottom:12px}
.class-head h2{font-size:20px;font-weight:600}
.scroller{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:12px;border:1.5px solid var(--line)}
table{border-collapse:separate;border-spacing:0;font-size:13px;min-width:100%}
th,td{padding:0;text-align:center;border-bottom:1px solid var(--line)}
thead th{position:sticky;top:0;background:var(--surface-solid);font-weight:700;padding:8px 4px;font-size:12px;color:var(--ink-2);z-index:1}
th.name,td.name{position:sticky;left:0;background:var(--surface-solid);text-align:left;padding:8px 12px;min-width:170px;max-width:220px;font-weight:600;font-size:14px;z-index:2;border-right:1px solid var(--line)}
td.c{min-width:38px;height:38px;font-weight:700;font-variant-numeric:tabular-nums}
td.total,th.total{min-width:64px;font-family:var(--display);font-weight:600;font-size:14px;border-left:1px solid var(--line)}
tr.avg td{background:var(--bg);font-weight:700}
.empty{padding:28px 18px;text-align:center;color:var(--ink-2)}
.note{font-size:14px;color:var(--ink-2);margin-top:12px;max-width:70ch}
.sendbox{margin-top:12px;display:none}
.sendbox textarea{width:100%;min-height:150px;border-radius:12px;border:1.5px solid var(--line);background:var(--surface-solid);color:var(--ink);padding:12px;font:14px/1.45 var(--body)}
footer{margin-top:48px;font-size:13px;color:var(--ink-2);border-top:1.5px solid var(--line);padding-top:14px}
footer a{color:var(--ink-2)}
[hidden]{display:none!important}

@media (max-width:720px){
  .top{grid-template-columns:1fr}
  .ring{width:120px;height:120px}
  .tiles{grid-template-columns:repeat(6,1fr)}
  .items{padding:0 12px 14px 12px}
  details.task > summary{grid-template-columns:44px 1fr auto;padding:12px 14px;gap:12px}
  .badge{width:44px;height:44px;font-size:17px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

.code{font-family:var(--display);font-weight:600;letter-spacing:.06em;font-size:15px;color:var(--ink)}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.small{font-size:14px;color:var(--ink-2)}
.linkbtn{background:none;border:0;padding:0;color:var(--violet);font-weight:600;cursor:pointer;text-decoration:underline;min-height:44px}
.pinbox{max-width:420px;margin-top:24px;padding:20px;display:flex;flex-direction:column;gap:12px}
.pinbox input{min-height:46px;border-radius:12px;border:1.5px solid var(--line);background:var(--surface-solid);padding:0 14px;font-size:17px;color:var(--ink)}
.err{color:var(--pink);font-size:14px;min-height:1.4em}
td.del{padding:0 6px}
td.del button{min-height:32px;border:1.5px solid var(--line);background:var(--surface-solid);border-radius:8px;cursor:pointer;font-size:12px;color:var(--ink-2)}

/* ---------- кабинет: вкладки ---------- */
.seg{display:flex;gap:6px;flex-wrap:wrap;margin:24px 0 0;padding:6px;border-radius:999px;background:var(--surface);border:1.5px solid var(--line);width:fit-content;max-width:100%}
.seg button{min-height:44px;padding:0 18px;border-radius:999px;border:0;background:transparent;cursor:pointer;font-weight:600;color:var(--ink-2)}
.seg button[aria-selected="true"]{background:var(--ink);color:var(--bg)}
.panel-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap;margin-top:28px}
.panel-head h2{font-size:24px;font-weight:600}
.panel-head p{margin:6px 0 0;color:var(--ink-2);font-size:15px;max-width:60ch}
.grow{flex:1 1 auto;min-width:0}
.btn.sm{min-height:36px;padding:0 12px;font-size:14px;border-radius:10px}
.btn:disabled{opacity:.6;cursor:default}
.box{margin-top:16px;padding:18px 20px}
.box > h3{font-family:var(--display);font-size:18px;font-weight:600;margin:0 0 12px}

/* ---------- пробники ---------- */
.mform{margin-top:16px;padding:20px;display:flex;flex-direction:column;gap:14px}
.mform-head{display:flex;gap:14px;flex-wrap:wrap}
.field{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:600;color:var(--ink-2)}
.field.grow{flex:1 1 260px}
.field input,.field select,.fcell select{min-height:44px;border-radius:12px;border:1.5px solid var(--line);background:var(--surface-solid);padding:0 12px;font-size:16px;color:var(--ink)}
.fgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:8px}
.fcell{display:flex;flex-direction:column;align-items:flex-start;gap:6px;padding:10px;border-radius:12px;border:1.5px solid var(--line);background:var(--surface-solid);cursor:pointer;min-height:44px}
.fcell .fn{font-family:var(--display);font-weight:700;font-size:16px}
.fcell .fl{font-size:12px;color:var(--ink-2)}
.fcell.check input{width:22px;height:22px;accent-color:var(--accent);margin:0}
.fcell select{width:100%;min-height:36px;padding:0 6px}
.fcell:has(input:checked){border-color:var(--sky);background:var(--sky-bg)}
.mform-total{font-family:var(--display);font-weight:600;font-size:18px}
.mform-foot{align-items:center}
details.mock{margin-top:10px;overflow:hidden}
details.mock > summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:auto 1fr auto auto;gap:14px;align-items:center;padding:14px 18px;min-height:64px}
details.mock > summary::-webkit-details-marker{display:none}
.mdate{font-weight:700;font-variant-numeric:tabular-nums;color:var(--ink-2);font-size:15px}
.mtotal{font-family:var(--display);font-weight:700;font-size:24px;font-variant-numeric:tabular-nums}
.mtotal small{font-size:14px;color:var(--ink-2);font-weight:500}
.mbody{padding:0 18px 18px;display:flex;flex-direction:column;gap:12px}
.mgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(52px,1fr));gap:6px}
.mcell{border:1.5px solid;border-radius:10px;padding:6px 4px;text-align:center;display:flex;flex-direction:column;gap:2px}
.mcell .fn{font-size:11px;font-weight:600;opacity:.85}
.mcell b{font-size:14px}
.chart svg{width:100%;height:auto;display:block}
.chart text{font-family:var(--body)}

/* ---------- раздатки ---------- */
.fgroup{margin-top:20px}
.fgroup h3{font-family:var(--display);font-size:18px;font-weight:600;margin:0 0 10px}
.flist{padding:6px 0}
.frow{display:flex;align-items:center;gap:14px;padding:12px 18px;border-bottom:1px solid var(--line)}
.frow:last-child{border-bottom:0}
.fext{flex-shrink:0;min-width:58px;text-align:center;font-family:var(--display);font-size:12px;font-weight:600;padding:8px 6px;border-radius:10px;background:var(--violet-bg);color:var(--violet)}
.ftitle{display:block;font-weight:700;color:var(--ink);text-decoration:none;font-size:17px;line-height:1.3}
.ftitle:hover{color:var(--accent);text-decoration:underline}
.frow .meta{display:block;font-size:13px;color:var(--ink-2);margin-top:2px}
.upform{margin-top:16px;padding:20px;display:flex;flex-direction:column;gap:14px}
.upform input[type=file]{font-size:15px}
.or{font-size:14px;color:var(--ink-2)}

/* ---------- учитель: пробники ---------- */
tr.pick{cursor:pointer}
tr.pick:hover td{background:color-mix(in srgb,var(--track) 60%,var(--surface-solid))}
tr.pick.on td{background:var(--violet-bg)}
td.l{text-align:left;padding:8px 12px;font-variant-numeric:tabular-nums}
td.num{padding:8px 10px;font-variant-numeric:tabular-nums;font-weight:600}

@media (max-width:720px){
  .seg{width:100%;display:grid;grid-template-columns:repeat(3,1fr);border-radius:18px}
  .seg button{padding:0 6px}
  details.mock > summary{grid-template-columns:1fr auto auto;padding:12px 14px}
  details.mock .mdate{grid-column:1/-1;font-size:13px}
  .frow{padding:12px 14px}
}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- версии и выбор класса ---------- */
.fgrid.wide{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
.fgrid.wide .fl{font-size:13px;line-height:1.35}
.mform-title{font-family:var(--display);font-size:18px;font-weight:600;margin:0}
.tiles.few{grid-template-columns:repeat(auto-fill,minmax(84px,1fr))}
.tile .n{white-space:nowrap}
.gradebox{margin-top:20px;padding:24px;display:flex;flex-direction:column;gap:16px}
.gradebox h2{font-size:22px;font-weight:600}
.grades{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}
.grades button{min-height:64px;border-radius:14px;border:1.5px solid var(--line);background:var(--surface-solid);cursor:pointer;font-family:var(--display);font-weight:700;font-size:22px;color:var(--ink);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px}
.grades button span{font-family:var(--body);font-size:12px;font-weight:600;color:var(--ink-2)}
.grades button[aria-pressed="true"]{border-color:var(--accent);background:var(--pink-bg)}
.grades button:hover{border-color:var(--violet)}
.chip{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;background:var(--violet-bg);color:var(--violet);font-weight:700;font-size:14px}
.exsel{display:flex;gap:6px;flex-wrap:wrap}
.exsel button{min-height:40px;padding:0 14px;border-radius:999px;border:1.5px solid var(--line);background:var(--surface-solid);cursor:pointer;font-weight:600;color:var(--ink-2)}
.exsel button[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.trackchecks{display:flex;gap:14px;flex-wrap:wrap;font-size:15px}
.trackchecks label{display:flex;align-items:center;gap:8px;min-height:44px;cursor:pointer}
.trackchecks input{width:20px;height:20px;accent-color:var(--accent)}
@media (max-width:720px){ .grades{grid-template-columns:repeat(3,1fr)} }
.seg button[aria-pressed="true"]{background:var(--ink);color:var(--bg)}
td.num{white-space:nowrap}