/* The Calcali look: clean and bright, yellow accent, white cards floating on soft shadows,
   Apple-style continuous corners. Loaded last, so it refines app.css and board.css. */

html,body{overflow-x:clip}
body{background:var(--desk);color:var(--ink)}
::selection{background:color-mix(in srgb,var(--accent) 60%,transparent)}

/* ---------- floating surfaces: no borders, soft shadow ---------- */
.card,.pc,.tile,.person,.pcard,.tcard,.notif,.bintro,.bcard,.ccard,.asgcard,.scard,.deckcard,.phone .card,.reply,
.tablewrap,.previewbox,.statrow div,.awork,.chead,.codecard{border:0!important;box-shadow:var(--card-shadow);background-color:var(--paper)}
.pc:hover,.tcard:hover,.bcard:hover,.ccard:hover,.deckcard:hover,.tile:hover{box-shadow:var(--card-shadow-hi)}
.amenu,.menu,.pop,.bar,.vctl,.votepop,.bq,.sheet2,.lbl,.sheet,.confirm .box{border:0!important;box-shadow:0 12px 40px var(--shadow),0 0 0 1px color-mix(in srgb,var(--ink) 6%,transparent)}
.previewbox{background:var(--board)}
.statrow div{background:var(--paper)}
.thumb,.diagram,.mini,.board:not(.full),.tbox,.cimg,.bthumb{border:0!important;box-shadow:inset 0 0 0 1px var(--line)}
.bthumb{box-shadow:none;border-bottom:1px solid var(--line)!important}
.phone .card{border-radius:var(--r2)}

/* controls keep a light outline */
.input,.select,.textarea,.searchbar,.fakeinput{border:1.5px solid var(--line);background:var(--paper)}
.input:focus,.select:focus,.textarea:focus,.searchbar:focus-within{border-color:var(--ink);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 55%,transparent)}
.fchip,.tpchip,.mchip,.ychip,.curtab,.curopt,.subjopt,.opt2,.sa,.symopt,.kind,.kb,.chip,.iconbtn,.btn.sec,.topicpick,.banrow,.bopt,.cdot,.bgsw{border-width:1.5px}
.iconbtn{border:0;background:var(--paper);box-shadow:var(--card-shadow)}
.iconbtn:hover{box-shadow:var(--card-shadow-hi)}

/* ---------- buttons: yellow means "do something" ---------- */
.btn{background:var(--accent);color:var(--onaccent);font-weight:600;box-shadow:0 1px 0 rgba(0,0,0,.06)}
.btn:hover{filter:brightness(.97)}
.btn:active{transform:scale(.98)}
.btn.sec{background:var(--paper);color:var(--ink);border:1.5px solid var(--line);box-shadow:none}
.btn.ghost{background:transparent;box-shadow:none}
.btn.danger{background:var(--bad);color:#15171C}
.btn.dark{background:var(--ink);color:var(--onink)}
.post,.send,.wide,.done,.row .done,.vctl .pp{background:var(--accent);color:var(--onaccent)}
.tab.ask,.rail .askbtn{background:var(--accent);color:var(--onaccent);box-shadow:0 4px 14px color-mix(in srgb,var(--accent) 45%,transparent)}
:root[data-theme=dark] .tab.ask,:root[data-theme=dark] .rail .askbtn{box-shadow:none}

/* ---------- navigation: the active item sits on a yellow pill ---------- */
.tab{gap:2px}
.tab>svg{padding:3px 12px;box-sizing:content-box;border-radius:999px;transition:background .2s}
.tab[aria-current=page]>svg{background:var(--accent);color:var(--onaccent)}
.tab[aria-current=page]{color:var(--ink)}
.tab[aria-current=page] .tabav .avw{outline:2px solid var(--accent);outline-offset:2px}
.tabbar{background:color-mix(in srgb,var(--paper) 86%,transparent);-webkit-backdrop-filter:saturate(1.6) blur(18px);backdrop-filter:saturate(1.6) blur(18px);border-top:1px solid color-mix(in srgb,var(--ink) 8%,transparent)}
@media (min-width:760px){
  .rail{background:color-mix(in srgb,var(--paper) 78%,transparent);border-right:1px solid color-mix(in srgb,var(--ink) 7%,transparent);-webkit-backdrop-filter:saturate(1.6) blur(18px);backdrop-filter:saturate(1.6) blur(18px)}
  .rail a.nav[aria-current=page]{background:var(--accent);color:var(--onaccent)}
  .rail a.nav:hover:not([aria-current=page]){background:var(--soft)}
}

/* ---------- header: full-width frosted glass that fades out at the bottom ---------- */
.head{background:transparent!important;-webkit-backdrop-filter:none!important;backdrop-filter:none!important;isolation:isolate}
.head::before{content:'';position:absolute;z-index:-1;top:0;bottom:-18px;left:-100vw;right:-100vw;pointer-events:none;
  background:color-mix(in srgb,var(--desk) 72%,transparent);-webkit-backdrop-filter:saturate(1.5) blur(16px);backdrop-filter:saturate(1.5) blur(16px);
  -webkit-mask-image:linear-gradient(#000 calc(100% - 26px),transparent);mask-image:linear-gradient(#000 calc(100% - 26px),transparent)}

/* ---------- pills: solved is filled green; an open question is an outlined yellow pill ---------- */
.qpill{background:transparent!important;box-shadow:inset 0 0 0 2px #E2D200;color:var(--ink)}
.qpill.done{background:var(--ok)!important;box-shadow:none;color:#15171C}
:root[data-theme=dark] .qpill{box-shadow:inset 0 0 0 2px var(--accent)}

/* unanswered questions: a dashed yellow outline */
.tile.open0,.pc.open0{outline:2px dashed #E2D200;outline-offset:-2px}
:root[data-theme=dark] .tile.open0,:root[data-theme=dark] .pc.open0{outline-color:var(--accent)}
.agetag{position:absolute;right:6px;top:6px;z-index:2;font-size:10px;font-weight:700;padding:2px 7px;border-radius:999px;background:var(--accent);color:#15171C}

/* ---------- avatars: no rings; teacher seal and country flag on the corners ---------- */
.avw{position:relative;border-radius:999px}
.avw .av{border-radius:999px;overflow:hidden}
.sealw{position:absolute;right:-8%;bottom:-8%;display:flex;filter:drop-shadow(0 1px 1px rgba(0,0,0,.18))}
.flagw{position:absolute;left:-10%;bottom:-10%;font-size:max(10px,calc(var(--fs,1) * 40%));line-height:1;display:none}
.showflags .flagw{display:block}

/* ---------- topic rings ---------- */
.tring{position:relative;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;line-height:1}
.tring .ringsvg{display:block}
.tring .rg{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-family:var(--math);color:var(--ink);letter-spacing:-.03em;white-space:nowrap;padding-top:.05em}
.tring.sec .rg{color:var(--c0)}
.tring.sec .rg svg{display:block}
.tchip .tring.xs,.tchip .tring.sm{margin-left:-2px}
.tchip{height:30px;padding:0 10px 0 2px;background:var(--soft);border-radius:999px}
.tpchip{height:36px;padding:0 12px 0 3px;border-radius:999px}
.tpchip .tring{margin-right:2px}
.tile .tp{left:5px;top:5px}
.fchip.sb{padding-left:3px}

/* ---------- profile ---------- */
.pcard{margin:0 8px;padding:0;border-radius:var(--r3);overflow:visible}
.pcard .pin{background:transparent;padding:21px;gap:13px;border-radius:var(--r3)}
.pcard .ptop{align-items:center}
.pcard .pav{margin:0!important;padding:0;background:none}
.pcard .pname{font-size:22px}
.pstats3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.pstats3>*{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:10px 4px;border-radius:var(--r1);background:var(--board);text-decoration:none;color:inherit;position:relative;cursor:pointer;border:0;font:inherit}
.pstats3 b{font-size:20px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.pstats3 span{font-size:12px;color:var(--muted)}
.pstats3 .ptsbox b{display:flex;align-items:center;gap:4px}
.ptsbox:hover .ptip,.ptsbox:focus .ptip,.ptsbox.open .ptip{opacity:1;transform:translate(-50%,0);pointer-events:auto}
.ptip{position:absolute;top:calc(100% + 8px);left:50%;transform:translate(-50%,-4px);opacity:0;pointer-events:none;transition:opacity .18s,transform .18s;z-index:30;min-width:230px;background:var(--paper);box-shadow:0 12px 40px var(--shadow),0 0 0 1px color-mix(in srgb,var(--ink) 6%,transparent);border-radius:var(--r2);padding:10px 12px;text-align:left;font-size:13px}
.ptip div{display:flex;justify-content:space-between;gap:13px;padding:4px 0;color:var(--muted)}
.ptip div b{font-size:13px;color:var(--ink)}
.ptip .tot{border-top:1px solid var(--line);margin-top:4px;padding-top:7px;color:var(--ink);font-weight:600}
.tlevel{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--r1);background:var(--accentSoft)}
.tlevel .bars{display:grid;grid-template-columns:repeat(5,1fr);gap:4px;flex:1}
.tlevel .bars i{height:8px;border-radius:4px;background:color-mix(in srgb,var(--ink) 12%,transparent);position:relative;overflow:hidden}
.tlevel .bars i.on{background:#E2C800}
.tlevel .bars i.part::after{content:'';position:absolute;inset:0;right:auto;width:var(--p);background:#E2C800;opacity:.55}
.tlevel b{font-size:13px;white-space:nowrap}
.tlevel small{display:block;font-size:11px;color:var(--muted)}
.ptopics{display:flex;gap:13px;overflow-x:auto;scrollbar-width:none;padding:2px 2px 4px}
.ptopics::-webkit-scrollbar{display:none}
.ptopic{display:flex;flex-direction:column;align-items:center;gap:5px;width:66px;flex-shrink:0;font-size:11px;font-weight:500;text-align:center;color:inherit;text-decoration:none;background:none;border:0;padding:0;cursor:pointer}
.ptopic span{max-width:66px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ptopic.on .tring{outline:2px solid var(--accent);outline-offset:3px;border-radius:999px}
.pschool{display:inline-flex;align-items:center;gap:5px;font-weight:600;color:var(--ink)}
.pschool img{width:16px;height:16px;border-radius:4px}

/* ---------- discover leaderboard ---------- */
.lbwrap{display:flex;flex-direction:column;gap:8px}
.lbrow{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:var(--r1);background:var(--paper);box-shadow:var(--card-shadow);text-decoration:none;color:inherit}
.lbrow .rk{width:26px;text-align:center;font-weight:700;font-variant-numeric:tabular-nums;color:var(--muted)}
.lbrow.top1 .rk,.lbrow.top2 .rk,.lbrow.top3 .rk{color:var(--ink)}
.lbrow.top1{background:linear-gradient(90deg,var(--accentSoft),var(--paper) 60%)}
.lbrow .t{flex:1;min-width:0;display:flex;flex-direction:column}
.lbrow .t b{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lbrow .t span{font-size:12px;color:var(--muted)}
.lbrow .sc{font-weight:700;font-variant-numeric:tabular-nums}
.lbrow .fl{font-size:18px}

/* ---------- motion: quick, cheap, and off when people ask for less ---------- */
.view{animation:viewin .22s ease-out}
@keyframes viewin{from{opacity:0;transform:translateY(6px)}}
.pc,.tile,.tcard,.bcard,.ccard,.btn,.fchip,.tpchip{transition:transform .15s ease,box-shadow .2s ease,background-color .2s ease}
@media (prefers-reduced-motion:reduce){.view{animation:none}}

/* ---------- corners: one curve everywhere ---------- */
.card,.pc,.tcard,.scard,.ccard,.bcard,.notif,.bintro,.asgcard,.deckcard,.awork{border-radius:var(--r2);corner-shape:squircle}
.tile{border-radius:var(--r1);corner-shape:squircle}
.btn,.input,.select,.searchbar,.kind,.post,.send,.wide{border-radius:var(--r1);corner-shape:squircle}
.btn.small{border-radius:var(--r0)}
.cbadge{border-radius:22%;corner-shape:squircle}
.thumb,.diagram{border-radius:var(--r0);corner-shape:squircle}
.card .thumb,.pc .thumb,.card .diagram,.pc .best{border-radius:calc(var(--r2) - 13px);corner-shape:squircle}

/* ---------- Library ---------- */
.libtabs{display:flex;gap:8px;margin-top:13px;overflow-x:auto;scrollbar-width:none}
.libtabs::-webkit-scrollbar{display:none}
.libtab{display:inline-flex;align-items:center;gap:6px;height:42px;padding:0 15px 0 6px;border:0;border-radius:999px;background:var(--paper);box-shadow:var(--card-shadow);font:inherit;font-weight:600;color:var(--ink);cursor:pointer;flex-shrink:0}
.libtab[aria-selected=true]{background:var(--accent);color:var(--onaccent)}
.years button.ychip{font:inherit;border:0;cursor:pointer}
.curnote{display:inline-flex;align-items:center;gap:5px;margin-left:auto;padding:0 8px;font-size:12px;font-weight:600;color:var(--muted);white-space:nowrap}
.pav{position:relative}
.pav .avedit{right:auto;left:2px}
.awork,.pc .best{border:0!important;background:var(--board)}

/* ---------- live side column ---------- */
.livelist{display:flex;flex-direction:column;gap:4px;margin-top:8px}
.liverow{display:flex;gap:8px;align-items:flex-start;padding:7px 8px;border-radius:var(--r1);color:inherit;text-decoration:none}
.liverow:hover{background:var(--soft)}
.liverow.open0{outline:1.5px dashed #E2D200;outline-offset:-1.5px}
.liverow .t{display:flex;flex-direction:column;min-width:0}
.liverow .t b{font-size:13.5px;font-weight:600;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.liverow .t span{font-size:12px;color:var(--muted)}
.liverow.arrive{animation:arrive .5s ease-out}
@keyframes arrive{from{opacity:0;transform:translateY(-6px);background:var(--accentSoft)}}
.livedot{width:8px;height:8px;border-radius:99px;background:#22C55E;box-shadow:0 0 0 0 rgba(34,197,94,.5);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 6px rgba(34,197,94,0)}100%{box-shadow:0 0 0 0 rgba(34,197,94,0)}}
@media (prefers-reduced-motion:reduce){.livedot,.liverow.arrive{animation:none}}

/* ---------- reported (folded away, never deleted) ---------- */
.reported{display:flex;align-items:center;gap:8px;padding:10px 13px;border-radius:var(--r1);background:var(--soft);color:var(--muted);font-size:13px}
.reported button{margin-left:auto}
.isreported>.rbody{display:none}
.isreported.showanyway>.rbody{display:block}
.lbcard{gap:8px}
.lbcard .seg button{flex:none;padding:0 10px;height:30px;display:inline-flex;align-items:center;gap:4px;white-space:nowrap;color:var(--ink)}
.lbcard .seg button[aria-pressed=true]{background:var(--paper);color:var(--ink);box-shadow:var(--card-shadow)}
.fchip.mine{background:var(--accentSoft)}
@media (min-width:760px){.aside{z-index:21}.rail{z-index:22}}
.iconbtn.on{background:var(--accent);color:var(--onaccent)}
.iconbtn.small{width:34px;height:34px}

/* ---------- whiteboard backgrounds: Auto, three textures, colour wheel ---------- */
#bgRow{display:flex;gap:6px;flex-wrap:wrap}
#bgRow .bgsw{width:58px;height:44px;border-radius:var(--r0);border:0;box-shadow:inset 0 0 0 1px rgba(0,0,0,.12);align-items:flex-end;justify-content:stretch}
#bgRow .bgsw .bgn{flex:1;font-size:9.5px;font-weight:700;line-height:1;padding:3px 0;color:#15171C;background:rgba(255,255,255,.82);text-align:center;letter-spacing:.01em}
#bgRow .bgsw.auto{color:inherit}
#bgRow .bgsw[aria-pressed=true]{box-shadow:0 0 0 2px var(--paper),0 0 0 4px var(--ink)}

/* handwriting: "did you mean" chips */
.altbar{position:absolute;z-index:40;display:flex;align-items:center;gap:4px;padding:4px;border-radius:999px;background:var(--paper);box-shadow:0 8px 24px var(--shadow),0 0 0 1px color-mix(in srgb,var(--ink) 8%,transparent);animation:viewin .18s ease-out;font-size:13px}
.altbar span{padding:0 6px 0 8px;color:var(--muted);white-space:nowrap}
.altbar button{min-width:34px;height:30px;padding:0 10px;border:0;border-radius:999px;background:var(--soft);font:inherit;font-weight:700;color:var(--ink);cursor:pointer;font-family:var(--math),inherit}
.altbar button:hover{background:var(--accent)}

/* ---------- faculties ---------- */
.facrow{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding:0 8px 8px}
.facrow::-webkit-scrollbar{display:none}
.facchip{display:flex;flex-direction:column;align-items:center;gap:5px;width:84px;flex-shrink:0;padding:10px 4px;border-radius:var(--r1);background:var(--paper);box-shadow:var(--card-shadow);color:inherit;text-decoration:none;font-size:11.5px;font-weight:600;text-align:center;line-height:1.2}
.facchip span{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.fgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px;padding:0 8px 21px}
.fcard{display:flex;flex-direction:column;gap:6px;padding:13px;border-radius:var(--r2);background:var(--paper);box-shadow:var(--card-shadow);color:inherit;text-decoration:none}
.fcard b{font-size:15px;line-height:1.25}
.fcard:hover{box-shadow:var(--card-shadow-hi)}
.fhero{display:flex;align-items:center;gap:13px;padding:0 13px 13px}
.fhero h1{margin:0;font-size:24px;letter-spacing:-.02em}
.fhero p{margin:2px 0 0}
.ftopics{display:flex;flex-direction:column;gap:6px;padding:0 8px 8px}
.frow{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--r1);background:var(--paper);box-shadow:var(--card-shadow);color:inherit;text-decoration:none}
.frow .t{flex:1;min-width:0;display:flex;flex-direction:column}
.frow .t b{font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.frow .t span{font-size:12px;color:var(--muted)}
.thero .hrow{flex-wrap:wrap}
.tpchip[aria-pressed=true],.fchip.on,.fchip[aria-pressed=true]{background:var(--accent)!important;color:var(--onaccent)!important;border-color:transparent!important}
.fchip.on .tring .rg,.tpchip[aria-pressed=true] .tring .rg{color:#15171C}
.schoolok{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:var(--r1);background:color-mix(in srgb,var(--ok) 18%,var(--paper));font-size:13px}
.schoolpend{display:flex;flex-direction:column;gap:8px;padding:8px 10px;border-radius:var(--r1);background:var(--soft)}
.ptopic.page .tring{outline:2px solid var(--accent);outline-offset:3px;border-radius:999px}
.newring{width:52px;height:52px;border-radius:999px;border:2px dashed var(--line);color:var(--muted)}
/* personal pages */
.upage{display:flex;flex-direction:column;gap:13px;padding:0 13px 34px}
.uphead{display:flex;gap:13px;align-items:center}
.uphead h1{margin:0;font-size:24px;letter-spacing:-.02em}
.upby{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:13px;text-decoration:none;margin-top:4px}
.upblocks{display:flex;flex-direction:column;gap:13px}
.upblock{position:relative;background:var(--paper);box-shadow:var(--card-shadow);border-radius:var(--r2);padding:13px}
.upblock.image img{width:100%;border-radius:calc(var(--r2) - 8px);display:block}
.upblock .diagram canvas{width:100%;height:280px;display:block}
.uptext{font-size:16px;line-height:1.6}
.upblock textarea{min-height:120px;width:100%}
.upctl{position:absolute;top:6px;right:6px;display:flex;gap:4px}
.upadd{padding-top:4px}
.pacts .grow{flex:1}
.qrbox{display:flex;justify-content:center;padding:8px}
.qrbox svg{border-radius:var(--r1);box-shadow:var(--card-shadow)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;letter-spacing:.04em}
.codes{display:grid;grid-template-columns:1fr 1fr;gap:6px 13px;padding:10px 13px;border-radius:var(--r1);background:var(--soft);font-size:15px}
.tsbox{min-height:65px}
/* admin launch checklist */
.launch{gap:0;padding:4px 13px}
.lrow{display:flex;gap:10px;align-items:flex-start;padding:9px 0;border-bottom:1px solid var(--line)}
.lrow:last-child{border-bottom:0}
.lrow .grow{display:flex;flex-direction:column;gap:2px;min-width:0}
.lmark{width:22px;height:22px;border-radius:999px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;background:var(--accent);color:#15171C;flex-shrink:0}
.lrow.ok .lmark{background:var(--ok)}
.pill.you{background:var(--accentSoft);color:var(--ink)}
.progressbar{height:8px;border-radius:4px;background:var(--soft);overflow:hidden}
.progressbar b{display:block;height:100%;background:var(--ok);border-radius:4px}
/* legal pages */
.legal .card{line-height:1.6;font-size:15px;gap:6px}
.legal .card>h1:first-child{display:none}
.legal h2{font-size:17px;margin:13px 0 0}
.legal ul,.legal ol{padding-left:20px;margin:4px 0}
.legal li{margin:3px 0}
.legal table{border-collapse:collapse;width:100%;font-size:13px;display:block;overflow-x:auto}
.legal th,.legal td{border-bottom:1px solid var(--line);padding:7px 8px;text-align:left;vertical-align:top}
.legal th{font-weight:700;background:var(--soft)}
/* the server-filled page shown for a moment before the app starts (and to search engines) */
.ssr{max-width:720px;margin:0 auto;padding:21px 16px;line-height:1.55}
.ssr h1{font-size:26px;letter-spacing:-.02em}
.ssr a{color:inherit}
.srcs{display:flex;flex-wrap:wrap;align-items:center;gap:4px 10px;font-size:12.5px;margin:6px 0 0}
.srcs b{color:var(--muted);font-weight:600}
.srcs a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--line);max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.editedtag{border:0;background:none;padding:0;font:inherit;font-size:12px;color:var(--muted);text-decoration:underline dotted;cursor:pointer}
.similar{display:flex;flex-direction:column;gap:4px;padding:8px 10px;border-radius:var(--r1);background:var(--accentSoft);margin-top:6px}
.similar a{display:flex;justify-content:space-between;gap:8px;color:var(--ink);text-decoration:none;font-size:14px;padding:3px 0}
.similar a small{color:var(--muted);white-space:nowrap}
/* printable worksheets */
.printsheet{display:none}
@media print{
  body.printing>*:not(.printsheet){display:none!important}
  body.printing::before,body.printing::after{display:none!important}
  body.printing{background:#fff!important;color:#000}
  .printsheet{display:block;font:12pt/1.45 Lexend,system-ui,sans-serif;color:#000}
  .printsheet header{display:flex;justify-content:space-between;border-bottom:2px solid #000;padding-bottom:6pt;margin-bottom:10pt;font-size:13pt}
  .printsheet ol{columns:2;column-gap:24pt;padding-left:18pt}
  .printsheet li{break-inside:avoid;margin:0 0 16pt}
  .printsheet img{max-width:100%;height:auto;display:block;margin:4pt 0}
  .printsheet .ans{margin-top:6pt;color:#333}
  .printsheet footer{font-size:9pt;color:#555;margin-top:8pt}
  .printsheet .answers{break-before:page}
  .printsheet .answers ol{columns:3}
}

/* ---------- foldables: with two screens side by side, the page sits on one and the live column on the other ---------- */
@media (horizontal-viewport-segments: 2) {
  .shell{display:grid!important;grid-template-columns:env(viewport-segment-width 0 0) env(viewport-segment-width 1 0);column-gap:calc(env(viewport-segment-left 1 0) - env(viewport-segment-right 0 0))}
  .shell .rail{display:none}
  .shell .main{grid-column:1;min-width:0;max-width:none}
  .shell .aside{display:flex!important;grid-column:2;position:sticky;top:0;height:100dvh;width:auto;padding:21px 13px}
  .tabbar{width:env(viewport-segment-width 0 0)}
}
/* tablets and unfolded phones in landscape: the post page puts the question beside the answers */
@media (min-width:900px) and (max-width:1280px) and (orientation:landscape){
  .mfull .phone.pv .scroll{scroll-padding-top:12px}
}
:root:not([data-theme=dark]) .tk{filter:brightness(.76)}
/* year picker: small band names between groups of years */
.years{align-items:center}
.yband{flex-shrink:0;font-size:10px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--faint);padding:0 2px 0 8px;white-space:nowrap}
.years .ychip:not([data-y=""]){min-width:42px}
/* multiple-choice practice */
.choices{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:8px}
.choices .btn{grid-column:1/-1}
.choice{display:flex;align-items:center;gap:10px;min-height:52px;padding:8px 12px;border-radius:var(--r1);corner-shape:squircle;background:var(--field);border:1.5px solid var(--line);text-align:left;font-size:16px;line-height:1.3}
.choice .ck{width:26px;height:26px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;background:var(--paper);font-size:12px;font-weight:700;color:var(--muted);flex-shrink:0;box-shadow:0 0 0 1.5px var(--line) inset}
.choice:hover{border-color:var(--ink)}
.choice[aria-pressed=true]{border-color:var(--ink)}
.choice.right{background:color-mix(in srgb,var(--ok) 30%,var(--paper));border-color:var(--ok)}
.choice.wrong{background:color-mix(in srgb,var(--bad) 22%,var(--paper));border-color:var(--bad)}