/* Live Class: quiet neutral interface. Greys and one ink colour; colour lives in the content. */
:root{
  --bg:#F7F7F5; --panel:#FFFFFF; --raise:#FFFFFF; --ink:#1E1E1C; --muted:#7A7975; --line:#E3E2DE; --soft:#F1F1EE;
  --accent:#1E1E1C; --accent-ink:#FFFFFF; --sel:#3B6FE0; --mustard:#E9B949; --moss:#2E8B57;
  --ok:#2E8B57; --okbg:#E6F4EA; --bad:#C2412D; --badbg:#FBE9E5; --idle:#C9C8C3;
  --shadow:0 1px 2px rgba(0,0,0,.04),0 6px 20px rgba(0,0,0,.05);
  --display:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --body:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.5 var(--body)}
h1,h2,h3{font-family:var(--display);font-weight:600;line-height:1.2;margin:0;text-wrap:balance;letter-spacing:-.01em}
a{color:var(--sel)}
button,input,select,textarea{font:inherit;color:inherit}
input,select,textarea{background:var(--raise);border:1px solid var(--line);border-radius:8px;padding:7px 10px;min-width:0}
input:focus,select:focus,textarea:focus{outline:2px solid var(--sel);outline-offset:-1px;border-color:transparent}
:focus-visible{outline:2px solid var(--sel);outline-offset:2px}
.muted{color:var(--muted)}
.small{font-size:12px}
.label{font-size:11px;letter-spacing:.07em;text-transform:uppercase;color:var(--muted);font-weight:600}
[hidden]{display:none!important}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);background:var(--raise);border-radius:8px;padding:7px 12px;cursor:pointer;font-weight:500;white-space:nowrap;text-decoration:none;color:var(--ink);line-height:1.2}
.btn:hover{background:var(--soft)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.primary:hover{opacity:.88}
.btn.ghost{background:transparent;border-color:transparent;color:var(--muted)}
.btn.ghost:hover{color:var(--ink);background:var(--soft)}
.btn.danger{color:var(--bad)}
.btn.sm{padding:5px 9px;font-size:13px}
.btn input[type=file]{display:none}

.dot{width:8px;height:8px;border-radius:50%;background:var(--idle);flex:none;display:inline-block}
.dot.on{background:var(--ok);box-shadow:0 0 0 3px var(--okbg)}
.dot.away{background:var(--mustard)}

.toasts{position:fixed;right:16px;bottom:calc(16px + env(safe-area-inset-bottom,0px));display:flex;flex-direction:column;gap:8px;z-index:60;max-width:min(360px,calc(100vw - 32px))}
.toast{background:var(--ink);color:var(--bg);padding:9px 14px;border-radius:9px;box-shadow:var(--shadow);font-size:13px;cursor:pointer}

/* lessons as collapsible lists */
details.lesson{background:var(--panel);border:1px solid var(--line);border-radius:10px}
details.lesson>summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:10px;padding:11px 14px}
details.lesson>summary::-webkit-details-marker{display:none}
details.lesson>summary::before{content:"";width:7px;height:7px;border-right:1.6px solid var(--muted);border-bottom:1.6px solid var(--muted);transform:rotate(-45deg);transition:transform .15s;flex:none;margin-right:2px}
details.lesson[open]>summary::before{transform:rotate(45deg)}
.ltitle{font-weight:600;font-size:15px;flex:1;min-width:0;overflow-wrap:anywhere}
.lcount{font-size:12px;color:var(--muted);white-space:nowrap}
.lbody{padding:0 14px 14px;display:flex;flex-direction:column;gap:10px}
.exlist{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.exlist li{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:8px 0;border-top:1px solid var(--soft)}
.exlist li:first-child{border-top:none}
.exname{flex:1;min-width:160px;overflow-wrap:anywhere}
.chipnum{font-size:12px;font-variant-numeric:tabular-nums;padding:2px 8px;border-radius:999px;background:var(--soft);color:var(--muted);white-space:nowrap}
.chipnum.done{background:var(--okbg);color:var(--ok)}
.kind{font-size:10px;letter-spacing:.07em;text-transform:uppercase;background:var(--soft);color:var(--muted);border-radius:4px;padding:2px 6px;font-weight:600;vertical-align:1px}

/* Notes editor */
.notes{display:flex;flex-direction:column;min-height:0;flex:1;gap:8px}
.ntools{display:flex;flex-wrap:wrap;gap:2px;align-items:center;border:1px solid var(--line);border-radius:8px;padding:3px;background:var(--raise)}
.ntools button{border:none;background:none;border-radius:6px;min-width:28px;height:28px;padding:0 6px;cursor:pointer;color:var(--ink);font-size:13px}
.ntools button:hover{background:var(--soft)}
.ntools .vs{width:1px;height:18px;background:var(--line);margin:0 3px}
.ntools .hsw{width:16px;height:16px;border-radius:4px;display:inline-block;vertical-align:middle}
.ndoc{flex:1;min-height:160px;overflow-y:auto;border:1px solid var(--line);border-radius:8px;padding:12px 14px;background:var(--raise);outline:none;line-height:1.55;font-size:14px}
.ndoc:focus{border-color:var(--sel)}
.ndoc:empty::before{content:attr(data-ph);color:var(--muted)}
.ndoc ul,.ndoc ol{padding-left:1.3em;margin:.3em 0}
.ndoc p,.ndoc div{margin:0}
mark{color:inherit;border-radius:3px;padding:0 .1em}
mark.h1,.hsw.h1{background:#FFF07A} mark.h2,.hsw.h2{background:#C8F5B4} mark.h3,.hsw.h3{background:#BFE3FF} mark.h4,.hsw.h4{background:#FFC9E0} mark.h5,.hsw.h5{background:#FFD8A8}
.nsaved{font-size:11px;color:var(--muted)}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* ---------- brand: light leak (sage → cream → butter) ---------- */
:root{
  --bg:#FBF8EF; --panel:#FFFDF7; --raise:#FFFDF8; --ink:#2E2F25; --muted:#86826F; --line:#E9E2CC; --soft:#F4EFE0;
  --accent:#2E2F25; --accent-ink:#FFFDF7; --sel:#4C7BE8; --mustard:#E6B54A; --honey:#E6B54A; --moss:#7D8A68;
  --ok:#4F8A5B; --okbg:#E7F1E2; --bad:#C0533A; --badbg:#FBEAE3; --idle:#D2CCB8;
  --leak:linear-gradient(105deg,#C3CAAA 0%,#E6DABA 48%,#F1BF4C 100%);
  --leak-fill:linear-gradient(105deg,#E1E3CD 0%,#F4ECD4 52%,#F9D478 100%);
  --grain:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.25 0 0 0 0 0.22 0 0 0 0 0.12 0 0 0 .09 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  --shadow:0 1px 1px rgba(70,60,20,.04),0 10px 30px -12px rgba(120,95,30,.22);
  --display:"Unbounded","Manrope",system-ui,sans-serif;
  --body:"Manrope","Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:light;
}
body{font-family:var(--body);background:var(--bg)}
h1,h2,h3{font-weight:500;letter-spacing:-.02em}
.label{text-transform:none;letter-spacing:0;font-size:12px;font-weight:600;color:var(--moss)}
input,select,textarea{border-radius:12px;border:1px solid var(--line);background:var(--raise)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--honey);outline-offset:-1px;border-color:transparent}
:focus-visible{outline:2px solid var(--honey);outline-offset:2px}
/* the signature: a light-leak ring around every control */
.btn{border:1.5px solid transparent;border-radius:999px;padding:8px 15px;font-weight:600;background:linear-gradient(var(--raise),var(--raise)) padding-box,var(--leak) border-box;transition:transform .12s,box-shadow .12s}
.btn:hover{background:linear-gradient(#FFF9EA,#FFF9EA) padding-box,var(--leak) border-box;box-shadow:0 6px 18px -10px rgba(200,150,40,.6)}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--leak-fill) padding-box,var(--leak) border-box;color:var(--ink);border-color:transparent;box-shadow:inset 0 1px 0 rgba(255,255,255,.7),0 6px 16px -10px rgba(200,150,40,.7)}
.btn.primary:hover{opacity:1;filter:saturate(1.15)}
.btn.ghost{background:transparent;border-color:transparent}
.btn.ghost:hover{background:var(--soft)}
.btn.danger{color:var(--bad)}
.btn.sm{padding:5px 11px}
.toast{background:var(--ink);color:#FFFDF7;border-radius:14px;padding:10px 16px 10px 14px;display:flex;gap:10px;align-items:center}
.toast::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--leak-fill);flex:none;box-shadow:0 0 0 2px rgba(255,255,255,.15)}
details.lesson{border-radius:18px;border-color:var(--line);box-shadow:var(--shadow)}
details.lesson[open]{background:linear-gradient(var(--panel),var(--panel)) padding-box,var(--leak) border-box;border:1px solid transparent}
.ltitle{font-family:var(--display);font-weight:500;font-size:15px}
.kind{background:var(--leak-fill);color:var(--ink);border-radius:999px;text-transform:none;letter-spacing:0;font-size:11px;padding:2px 8px}
.chipnum{background:var(--soft)}
.ntools,.ndoc{border-radius:14px}
.ndoc:focus{border-color:var(--honey)}

/* board cards: cover + title, like a shelf of notebooks */
.bgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:22px 18px}
.bcard{display:flex;flex-direction:column;gap:8px;min-width:0;position:relative}
.bcover{display:block;aspect-ratio:1/1;border-radius:22px;border:1px solid var(--line);background:var(--grain),var(--leak-fill);background-size:cover;background-position:center;position:relative;overflow:hidden;box-shadow:0 14px 30px -20px rgba(120,95,30,.5);transition:transform .15s,box-shadow .15s;text-decoration:none}
.bcover.img{background-color:#fff}
.bcover:hover{transform:translateY(-2px);box-shadow:0 20px 36px -20px rgba(120,95,30,.6)}
.bcover .mono{position:absolute;left:16px;bottom:12px;right:16px;font:500 34px/1 var(--display);letter-spacing:-.04em;color:rgba(46,47,37,.82);overflow-wrap:anywhere}
.btitle{font-weight:700;font-size:16px;line-height:1.25;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink);text-decoration:none}
.bsub{font-size:13px;color:var(--muted);margin-top:-6px}
.bacts{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
details.bmore{position:relative}
details.bmore>summary{list-style:none;cursor:pointer;border-radius:999px;padding:4px 10px;color:var(--muted);font-weight:700;letter-spacing:.1em}
details.bmore>summary::-webkit-details-marker{display:none}
details.bmore>summary:hover{background:var(--soft);color:var(--ink)}
details.bmore .menu{position:absolute;left:0;top:calc(100% + 4px);z-index:30;min-width:190px;background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:5px;display:flex;flex-direction:column}
details.bmore .menu .btn{justify-content:flex-start;border:none;background:none;border-radius:9px;padding:7px 10px;font-weight:500}
details.bmore .menu .btn:hover{background:var(--soft)}
.bcard .copyrow{margin-top:4px}

/* Unbounded is wide and heavy — headings use its light weights */
h1,h2,h3,.ltitle,.bcover .mono,.btitle.display{font-weight:400}
h1{font-weight:300}
.bcover .mono{font-weight:300}

/* Speak&Teach logo */
.logo{display:block;width:100%;height:auto;overflow:visible}
.logo text{font:700 72px "Caveat",cursive;fill:#2E2F25;fill-opacity:0;stroke:#3B3A33;stroke-width:1.3;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1200;stroke-dashoffset:1200}
.logo.go text{animation:pencil 2.6s cubic-bezier(.45,.05,.35,1) forwards,inkin .9s 2.1s ease forwards}
@keyframes pencil{to{stroke-dashoffset:0}}
@keyframes inkin{to{fill-opacity:1;stroke-opacity:.35}}
@media (prefers-reduced-motion:reduce){.logo text{stroke-dashoffset:0;fill-opacity:1}.logo.go text{animation:none}}
h1.logoh{width:min(340px,86vw);margin:4px 0 0}
.brand[aria-label]{width:150px}
/* выбор досок, корзина, хранилище */
body.picking .bcard{cursor:pointer;position:relative;outline:2px dashed transparent;outline-offset:3px;border-radius:16px}
body.picking .bcard::after{content:'';position:absolute;top:10px;left:10px;width:22px;height:22px;border-radius:50%;background:rgba(255,255,255,.9);box-shadow:inset 0 0 0 2px rgba(0,0,0,.25)}
body.picking .bcard.picked{outline-color:var(--tacc,#C08A2E)}
body.picking .bcard.picked::after{background:var(--tacc,#C08A2E) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 12.5l4 4 8-9' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/16px no-repeat;box-shadow:none}
body.picking .bcard .bacts{pointer-events:none;opacity:.4}
.pickbar{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);z-index:60;display:flex;gap:8px;align-items:center;flex-wrap:wrap;background:var(--card,#fff);padding:10px 14px;border-radius:16px;box-shadow:0 16px 40px -14px rgba(0,0,0,.35);border:1px solid var(--line,#e5e2d8);max-width:calc(100vw - 24px)}
.trlist{display:flex;flex-direction:column;gap:8px;max-height:56vh;overflow:auto}
.tritem{display:flex;align-items:center;gap:10px;padding:8px;border:1px solid var(--line,#e5e2d8);border-radius:12px}
.tritem .trc{width:56px;height:40px;border-radius:8px;background:linear-gradient(135deg,var(--t1,#C3CAAA),var(--t2,#E6DABA)) center/cover;flex:none}
.tritem .trt{flex:1;min-width:0;display:flex;flex-direction:column}
.tritem .trt b{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.stor{display:flex;flex-direction:column;gap:8px;margin:4px 0}
.srow{display:grid;grid-template-columns:200px 1fr 80px;gap:10px;align-items:center;font-size:14px}
.srow b{text-align:right}
.sbar{height:8px;border-radius:8px;background:rgba(0,0,0,.06);overflow:hidden}
.sbar i{display:block;height:100%;border-radius:8px;background:linear-gradient(90deg,var(--t1,#C3CAAA),var(--t3,#F1BF4C))}
@media (max-width:600px){.srow{grid-template-columns:1fr 70px}.srow .sbar{grid-column:1/-1;order:3}}
/* раскрывающийся список в заметках */
.ndoc details{margin:.3em 0;padding:.2em 0 .2em .2em;border-left:2px solid var(--line)}
.ndoc details>summary{list-style:none;font-weight:600;cursor:text;position:relative;padding-left:1.3em}
.ndoc details>summary::-webkit-details-marker{display:none}
.ndoc details>summary::before{content:'▸';position:absolute;left:.15em;top:0;cursor:pointer;color:var(--muted);transition:transform .15s;display:inline-block}
.ndoc details[open]>summary::before{transform:rotate(90deg)}
.ndoc details>div{padding-left:1.3em}