/* SAT Dombit — exam platform. Layout follows Bluebook: plain bars, one question per screen.
   Palette: paper grey, white surfaces, near-black ink and one deep blue for actions; serif only for test content. */
:root{
  --bg:#f3f3f0; --surface:#ffffff; --ink:#17191e; --muted:#5c616b; --line:#d9dbe0; --subtle:#f0f1f3;
  --brand:#1f3c88; --brand-ink:#ffffff; --brand-soft:#eceff6; --brand-line:#c3cbe2; --brand-deep:#142a63;
  --ok:#1e6b45; --ok-soft:#e5f1ea; --bad:#a3261d; --bad-soft:#f8e8e6; --warn:#8a5300; --warn-soft:#faf0dd;
  --shadow:0 2px 4px rgba(20,24,32,.06),0 12px 32px rgba(20,24,32,.12);
  --f-q:"Source Serif 4",Georgia,"Times New Roman",serif;
  --f-ui:"Public Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  /* Figures use the UI face with aligned digits; true monospace only for usernames and passwords. */
  --f-mono:"Public Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --f-code:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#111317; --surface:#191c22; --ink:#e7e9ed; --muted:#9aa0ab; --line:#2d3139; --subtle:#20242b;
  --brand:#8ea7ea; --brand-ink:#0d1325; --brand-soft:#1c2333; --brand-line:#36425f; --brand-deep:#c5d2f5;
  --ok:#67c495; --ok-soft:#16291f; --bad:#ee8a80; --bad-soft:#341b19; --warn:#e2ab5c; --warn-soft:#33281a;
  --shadow:0 2px 4px rgba(0,0,0,.3),0 12px 32px rgba(0,0,0,.4); color-scheme:dark}}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--f-ui);font-size:15px;line-height:1.5;
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));-webkit-font-smoothing:antialiased}
h1,h2,h3{text-wrap:balance;margin:0;line-height:1.2}
h1.page{font-family:var(--f-q);font-weight:600;font-size:clamp(26px,3.6vw,34px);letter-spacing:-.01em}
h2.sec{font-size:18px;margin-bottom:12px}
a{color:var(--brand)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
[hidden]{display:none!important}
img{max-width:100%}
.wrap{max-width:1080px;margin:0 auto}
.narrow{max-width:760px;margin:0 auto}
.muted{color:var(--muted)}
.tnum{font-variant-numeric:tabular-nums}
.mono{font-family:var(--f-mono)}
.label{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.row.between{justify-content:space-between}
.stack{display:flex;flex-direction:column;gap:14px}
.spacer{flex:1}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:6px;padding:8px 18px;font-weight:600;border:1.5px solid var(--brand);background:var(--brand);color:var(--brand-ink);min-height:40px;text-decoration:none;white-space:nowrap}
.btn:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent;color:var(--brand)}
.btn.quiet{border-color:var(--line);background:var(--surface);color:var(--ink)}
.btn.danger{border-color:var(--bad);background:transparent;color:var(--bad)}
.btn.danger.armed{background:var(--bad);color:#fff}
.btn.sm{min-height:32px;padding:4px 12px;font-size:13px}
.btn:disabled{opacity:.45;cursor:not-allowed;filter:none}
.linkbtn{border:none;background:none;color:var(--brand);font-weight:600;padding:2px 4px;border-radius:6px}
.linkbtn:hover{background:var(--brand-soft)}

/* app header */
.apphead{position:sticky;top:0;z-index:20;background:var(--surface);border-bottom:1px solid var(--line);
  margin-left:calc(-1 * max(16px,env(safe-area-inset-left,0px)));margin-right:calc(-1 * max(16px,env(safe-area-inset-right,0px)));padding-top:env(safe-area-inset-top,0px)}
.apphead-in{max-width:1080px;margin:0 auto;display:flex;align-items:center;gap:18px;min-height:60px;
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.logo{display:inline-flex;align-items:center;gap:8px;color:var(--brand);text-decoration:none}
.logo .logo-mark{flex:none}
.logo b{font-weight:700;letter-spacing:.16em;font-size:14px}
.nav{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
.nav a{padding:6px 12px;border-radius:6px;text-decoration:none;color:var(--muted);font-weight:600;font-size:14px;white-space:nowrap}
.nav a:hover{color:var(--ink);background:var(--brand-soft)}
.nav a[aria-current="page"]{color:var(--brand);background:var(--brand-soft)}
.who{display:flex;align-items:center;gap:10px;margin-left:auto;font-size:14px}
.who .name{font-weight:600;max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.menu{position:relative}
.menu-pop{position:absolute;right:0;top:calc(100% + 8px);background:var(--surface);border:1px solid var(--line);border-radius:6px;box-shadow:var(--shadow);padding:6px;min-width:200px;z-index:30}
.menu-pop button{display:block;width:100%;text-align:left;border:none;background:none;padding:8px 12px;border-radius:8px}
.menu-pop button:hover{background:var(--brand-soft)}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-weight:700;border:none}
main.page{padding-block:28px 64px}

/* cards, forms */
.card{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:20px;box-shadow:var(--shadow)}
.card.flat{box-shadow:none}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-weight:600;font-size:14px}
.field .hint{font-size:12px;color:var(--muted)}
input.in,select.in,textarea.in{border:1.5px solid var(--line);background:var(--bg);border-radius:6px;padding:9px 12px;min-height:42px;width:100%}
textarea.in{min-height:90px;resize:vertical;line-height:1.45}
input.in:focus,select.in:focus,textarea.in:focus{border-color:var(--brand);outline:none}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.err{color:var(--bad);font-size:13px;min-height:1.2em}
.check{display:flex;gap:8px;align-items:center;font-weight:500}
.check input{width:18px;height:18px;accent-color:var(--brand)}
.note{font-size:13px;color:var(--muted)}
.banner{display:flex;gap:10px;align-items:flex-start;border-radius:6px;padding:10px 14px;font-size:14px}
.banner.ok{background:var(--ok-soft);color:var(--ok)}
.banner.warn{background:var(--warn-soft);color:var(--warn)}
.banner.bad{background:var(--bad-soft);color:var(--bad)}
.banner.info{background:var(--brand-soft);color:var(--ink)}

/* login */
.login{min-height:100vh;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:40px;align-items:center;max-width:1000px;margin:0 auto;padding-block:40px}
.login h1{font-family:var(--f-q);font-weight:600;font-size:clamp(32px,5vw,50px);letter-spacing:-.01em;margin:14px 0}
.login h1 em{font-style:normal;color:var(--brand)}
.login .lead{font-size:17px;color:var(--muted);max-width:46ch}
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:8px;overflow:hidden;margin-top:22px;max-width:440px}
.facts div{background:var(--surface);padding:12px 14px}
.facts strong{display:block;font-family:var(--f-mono);font-size:20px}
.facts span{font-size:13px;color:var(--muted)}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:14px 16px}
.stat strong{display:block;font-family:var(--f-mono);font-size:26px;line-height:1.2}
.stat span{font-size:13px;color:var(--muted)}

/* test cards */
.tests{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.tcard{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:18px;display:flex;flex-direction:column;gap:10px}
.tcard h3{font-size:17px}
.tcard .meta{display:flex;gap:6px;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:var(--bg);border-radius:6px;padding:2px 10px;font-size:12px;color:var(--muted);white-space:nowrap}
.chip.brand{border-color:var(--brand-line);background:var(--brand-soft);color:var(--brand);font-weight:600}
.timepick{display:flex;flex-direction:column;gap:10px;border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:10px 0;background:var(--bg)}
.timepick .trow{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:12px}
.timepick .trow input{width:84px}
.timepick .tstd{font-size:13px;min-width:92px;text-align:right}
.permbox{display:flex;flex-direction:column;gap:8px;border:1px solid var(--line);border-radius:10px;padding:12px 14px;background:var(--bg)}
.permbox .check{font-size:14px;align-items:flex-start}
.rolechip{display:inline-block;border-radius:6px;padding:1px 8px;font-size:11.5px;font-weight:700;letter-spacing:.02em;line-height:1.6;vertical-align:middle;font-family:var(--f-ui)}
.rolechip.r-student{background:var(--ok-soft);color:var(--ok)}
.rolechip.r-teacher{background:color-mix(in srgb,#3b7be0 15%,transparent);color:#3b74d6}
.rolechip.r-admin{background:var(--brand-soft);color:var(--brand)}
.chip.ok{border-color:transparent;background:var(--ok-soft);color:var(--ok);font-weight:600}
.chip.warn{border-color:transparent;background:var(--warn-soft);color:var(--warn);font-weight:600}
.tcard .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:6px}
.best{font-size:13px;color:var(--muted)}
.best b{font-family:var(--f-mono);color:var(--ink);font-size:16px}

/* tables */
.tablewrap{overflow-x:auto;background:var(--surface);border:1px solid var(--line);border-radius:8px}
table.t{width:100%;border-collapse:collapse;font-size:14px}
table.t th{text-align:left;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:600;padding:10px 12px;border-bottom:1px solid var(--line);background:var(--bg);white-space:nowrap}
table.t td{padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
table.t tr:last-child td{border-bottom:none}
table.t tr.click{cursor:pointer}
table.t tr.click:hover td{background:var(--brand-soft)}
table.t .num{font-family:var(--f-mono);font-variant-numeric:tabular-nums;white-space:nowrap}
table.t .nowrap{white-space:nowrap}
.score{display:inline-block;font-family:var(--f-mono);font-weight:600;border-radius:6px;padding:2px 8px;background:var(--brand-soft);color:var(--brand)}
.empty{text-align:center;padding:36px 16px;color:var(--muted)}
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--ok);margin-right:6px}
.dot.off{background:var(--muted)}

/* charts */
.chart svg{display:block;width:100%;height:auto}
.dom{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 12px;font-size:14px}
.dom .track{grid-column:1/-1;height:8px;border-radius:3px;background:var(--brand-soft);overflow:hidden}
.dom .fill{height:100%;background:var(--brand);border-radius:3px}
.qbars{display:grid;grid-template-columns:repeat(var(--n,22),minmax(0,1fr));gap:4px;align-items:end;height:120px;padding-top:8px}
.qbars .col{display:flex;flex-direction:column;justify-content:flex-end;align-items:center;height:100%;gap:3px;font-size:10px;color:var(--muted);font-family:var(--f-mono)}
.qbars .bar{width:100%;border-radius:3px 3px 0 0;background:var(--brand);min-height:2px}
.qbars .bar.low{background:var(--bad)}

/* score card */
.scoregrid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:18px;align-items:stretch}
.scorecard{background:var(--brand);color:var(--brand-ink);border-radius:8px;padding:24px;display:flex;flex-direction:column;gap:6px}
.scorecard .n{font-family:var(--f-mono);font-size:64px;font-weight:600;line-height:1}
.scorecard .scale{opacity:.85;font-size:14px}
.scorecard .split{display:flex;gap:22px;flex-wrap:wrap;margin-top:auto;padding-top:16px;border-top:1px solid color-mix(in srgb,var(--brand-ink) 30%,transparent)}
.scorecard .split strong{display:block;font-family:var(--f-mono);font-size:20px}

/* review */
.filters{display:flex;gap:8px;flex-wrap:wrap}
.pill{border:1.5px solid var(--line);background:var(--surface);border-radius:6px;padding:6px 14px;font-size:13px;font-weight:600}
.pill[aria-pressed="true"]{border-color:var(--brand);background:var(--brand-soft);color:var(--brand)}
.rv{border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:16px 18px;border-left-width:5px}
.rv.right{border-left-color:var(--ok)}
.rv.wrong{border-left-color:var(--bad)}
.rv.blank{border-left-color:var(--muted)}
.rv .meta{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;font-size:13px;margin-bottom:8px}
.tag{font-weight:700;border-radius:6px;padding:2px 8px;font-size:12px}
.tag.right{background:var(--ok-soft);color:var(--ok)}
.tag.wrong{background:var(--bad-soft);color:var(--bad)}
.tag.blank{background:var(--brand-soft);color:var(--muted)}
.ansline{display:flex;flex-wrap:wrap;gap:6px 20px;font-size:14px;margin-top:8px}
.explain{margin-top:10px;font-size:15px;background:var(--brand-soft);border-radius:6px;padding:10px 12px;font-family:var(--f-q)}
.rv .opts{font-family:var(--f-q);font-size:16px;display:grid;gap:4px;margin-top:6px}
.rv .opts .is-key{color:var(--ok);font-weight:600}
.rv .opts .is-given{color:var(--bad)}

/* rich question text */
.stem{font-family:var(--f-q);font-size:18px;line-height:1.65;overflow-wrap:anywhere}
.stem p{margin:0 0 12px}
.stem table{border-collapse:collapse;margin:8px 0 14px;font-family:var(--f-ui);font-size:15px}
.stem th,.stem td{border:1px solid var(--line);padding:6px 14px;text-align:center}
.stem th{background:var(--brand-soft);font-weight:600}
.qimg{display:block;max-width:min(420px,100%);margin:6px auto 14px;border-radius:8px;background:#fff}
mjx-container[display="true"]{overflow-x:auto;overflow-y:hidden;max-width:100%}

/* ---------- exam shell ---------- */
.exam .bar{position:sticky;top:0;z-index:20;background:var(--surface);border-bottom:2px dashed var(--line);padding-top:env(safe-area-inset-top,0px);
  margin-left:calc(-1 * max(16px,env(safe-area-inset-left,0px)));margin-right:calc(-1 * max(16px,env(safe-area-inset-right,0px)))}
.exam .bar-in{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px;padding-block:10px;
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.exam .bar h2{font-size:15px;font-weight:600}
.exam .bar .sub{font-size:12px;color:var(--muted)}
.timer{display:flex;flex-direction:column;align-items:center;gap:2px}
.timer .clock{font-family:var(--f-mono);font-size:22px;font-weight:600;letter-spacing:.02em}
.timer.low .clock{color:var(--bad)}
.timer .linkbtn{color:var(--muted);font-size:12px;font-weight:500}
.toolset{display:flex;justify-content:flex-end;gap:4px}
.tool{display:flex;flex-direction:column;align-items:center;gap:2px;border:none;background:none;color:var(--ink);font-size:12px;padding:4px 8px;border-radius:8px;text-decoration:none}
.tool:hover,.tool[aria-pressed="true"]{background:var(--brand-soft)}
.tool svg{width:20px;height:20px}
.stage{padding-block:22px 120px}
.qhead{display:flex;align-items:center;gap:10px;background:var(--brand-soft);border-radius:6px;padding:6px 6px 6px 0;margin-bottom:18px}
.qnum{background:var(--ink);color:var(--surface);font-weight:700;border-radius:8px 0 0 8px;padding:6px 12px;font-family:var(--f-mono)}
.mark{display:flex;align-items:center;gap:6px;border:none;background:none;font-weight:500;padding:4px 8px;border-radius:8px}
.mark svg{width:16px;height:16px}
.mark[aria-pressed="true"]{color:var(--brand);font-weight:700}
.elim{border:1.5px solid var(--line);background:var(--surface);border-radius:6px;font-size:12px;font-weight:700;padding:2px 7px;text-decoration:line-through}
.elim[aria-pressed="true"]{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
.qbody{display:grid;grid-template-columns:minmax(0,1fr);gap:22px;max-width:760px;margin:0 auto}
.qbody.spr{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);max-width:1060px}
.choices{display:flex;flex-direction:column;gap:10px;margin-top:6px}
.choice{display:flex;align-items:center;gap:8px}
.opt{flex:1;min-width:0;display:flex;align-items:center;gap:14px;text-align:left;border:1.5px solid var(--line);background:var(--surface);border-radius:6px;padding:10px 14px;min-height:52px;font-family:var(--f-q);font-size:17px}
.opt:hover{border-color:var(--brand-line)}
.opt .let{flex:none;width:28px;height:28px;border-radius:50%;border:1.5px solid var(--ink);display:grid;place-items:center;font-family:var(--f-ui);font-weight:700;font-size:13px}
.opt .txt{min-width:0;overflow-wrap:anywhere}
.opt[aria-checked="true"]{border-color:var(--brand);box-shadow:0 0 0 1.5px var(--brand)}
.opt[aria-checked="true"] .let{background:var(--brand);border-color:var(--brand);color:var(--brand-ink)}
.choice.struck .opt{opacity:.45}
.choice.struck .opt .txt{text-decoration:line-through}
.strike{flex:none;width:30px;height:30px;border-radius:50%;border:1.5px solid var(--line);background:var(--surface);font-size:12px;font-weight:700;text-decoration:line-through}
.dir{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:16px 18px;font-size:14px}
.dir h3{font-size:15px;margin-bottom:6px}
.dir ul{margin:6px 0 0;padding-left:18px}
.sprbox{display:flex;flex-direction:column;gap:10px;margin-top:8px}
.sprbox input{font-family:var(--f-mono);font-size:22px;width:180px;max-width:100%;border:0;border-bottom:2.5px solid var(--ink);background:transparent;padding:6px 4px}
.sprbox input:focus{outline:none;border-bottom-color:var(--brand)}
.preview{font-size:14px;color:var(--muted)}
.efoot{position:fixed;left:0;right:0;bottom:0;z-index:20;background:var(--surface);border-top:2px dashed var(--line);
  padding-block:10px calc(10px + env(safe-area-inset-bottom,0px));padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.efoot-in{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px}
.efoot .who-e{font-weight:600;font-size:14px;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.efoot .save{font-weight:400;font-size:12px;color:var(--muted);display:block}
.efoot .save.bad{color:var(--bad)}
.navbtn{background:var(--ink);color:var(--surface);border:none;border-radius:8px;padding:8px 14px;font-weight:600;display:flex;align-items:center;gap:6px}
.efoot .act{display:flex;justify-content:flex-end;gap:8px}
.pop{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(76px + env(safe-area-inset-bottom,0px));z-index:40;width:min(560px,calc(100% - 32px));background:var(--surface);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);padding:18px}
.legend{display:flex;flex-wrap:wrap;gap:14px;font-size:12px;color:var(--muted);padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:14px}
.legend i{display:inline-block;width:12px;height:12px;border-radius:3px;vertical-align:-2px;margin-right:5px;border:1.5px dashed var(--muted)}
.legend i.ans{background:var(--brand);border:1.5px solid var(--brand)}
.legend i.cur{border:1.5px solid var(--ink)}
.qgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(40px,1fr));gap:10px}
.cell{position:relative;height:40px;border-radius:6px;border:1.5px dashed var(--muted);background:var(--surface);font-weight:700;color:var(--brand)}
.cell.ans{background:var(--brand);color:var(--brand-ink);border:1.5px solid var(--brand)}
.cell.cur{outline:2px solid var(--ink);outline-offset:2px}
.cell .flag{position:absolute;top:-7px;right:-6px;width:14px;height:14px;color:var(--bad)}
.drawer{position:fixed;top:calc(70px + env(safe-area-inset-top,0px));right:max(12px,env(safe-area-inset-right,0px));z-index:35;width:min(460px,calc(100% - 24px));max-height:calc(100% - 170px);overflow:auto;background:var(--surface);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);padding:16px}
/* floating Desmos window */
.calcwin{position:fixed;z-index:38;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:8px;box-shadow:0 2px 6px rgba(30,15,50,.12),0 18px 48px rgba(30,15,50,.22);overflow:hidden;min-width:300px;min-height:320px}
.calcbar{display:flex;align-items:center;gap:8px;padding:6px 6px 6px 10px;background:var(--brand);color:var(--brand-ink);cursor:grab;user-select:none;touch-action:none;flex:none}
.calcbar:focus-visible{outline:2px solid var(--ink);outline-offset:-2px}
.calcwin.moving .calcbar{cursor:grabbing}
.calcbar b{font-size:14px;font-weight:600;white-space:nowrap}
.calcbar .grip{width:10px;height:16px;opacity:.75;flex:none}
.calcicon{border:none;background:transparent;color:inherit;width:32px;height:32px;border-radius:8px;display:grid;place-items:center;flex:none}
.calcicon:hover{background:color-mix(in srgb,var(--brand-ink) 18%,transparent)}
.calcicon svg{width:16px;height:16px}
.calcbody{position:relative;flex:1;min-height:0;background:#fff}
.calcbody iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.calcshield{position:absolute;inset:0;z-index:2}
.calcwin.moving{opacity:.92}
.calcfoot{flex:none;font-size:11px;padding:4px 10px;border-top:1px solid var(--line);background:var(--surface)}
.calcfoot a{color:var(--muted)}
.calcresize{position:absolute;right:0;bottom:0;width:22px;height:22px;cursor:nwse-resize;touch-action:none;z-index:3;
  background:linear-gradient(135deg,transparent 50%,var(--brand-line) 50%,var(--brand-line) 58%,transparent 58%,transparent 70%,var(--brand-line) 70%,var(--brand-line) 78%,transparent 78%)}
.drawer .dh{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;gap:10px}
.x{border:none;background:var(--brand-soft);border-radius:50%;width:32px;height:32px;font-size:18px;line-height:1;flex:none}
.refgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;font-size:14px}
.refgrid div{border:1px solid var(--line);border-radius:6px;padding:10px;text-align:center}
.refgrid small{display:block;color:var(--muted);font-size:12px;margin-bottom:4px}
.bigmsg{display:grid;place-items:center;text-align:center;padding-block:56px}
.bigmsg h1{font-family:var(--f-q);font-size:32px;font-weight:600}
.bigmsg p{max-width:46ch;color:var(--muted)}

/* modal + toast */
.scrim{position:fixed;inset:0;z-index:50;background:rgba(15,8,25,.45);display:grid;place-items:center;padding:16px;overflow:auto}
.modal{background:var(--surface);border-radius:8px;max-width:460px;width:100%;padding:22px;box-shadow:var(--shadow)}
.modal.wide{max-width:760px}
.modal h3{font-size:19px;margin-bottom:8px}
.modal .actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px;flex-wrap:wrap}
#toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(24px + env(safe-area-inset-bottom,0px));z-index:60;background:var(--ink);color:var(--surface);padding:10px 18px;border-radius:6px;font-weight:600;font-size:14px;box-shadow:var(--shadow);max-width:calc(100% - 32px)}

/* credentials */
.creds{font-family:var(--f-mono);font-size:13px}
.creds td{white-space:nowrap}

/* question editor */
.qlist{display:flex;flex-direction:column;gap:10px}
.qitem{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:12px;align-items:start;background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:12px 14px}
.qitem .n{font-family:var(--f-mono);font-weight:700;color:var(--brand);min-width:28px}
.qitem .stem{font-size:15px;line-height:1.5;max-height:7.5em;overflow:hidden}
.qitem .tools{display:flex;gap:4px;flex-wrap:wrap;justify-content:flex-end}
.iconbtn{border:1px solid var(--line);background:var(--surface);border-radius:8px;min-width:32px;height:32px;padding:0 8px;font-size:13px}
.iconbtn:hover{background:var(--brand-soft)}
.livepreview{border:1px dashed var(--brand-line);border-radius:6px;padding:12px 14px;background:var(--bg)}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:16px;overflow-x:auto}
.tabs button{border:none;background:none;padding:8px 14px;font-weight:600;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}
.tabs button[aria-selected="true"]{color:var(--brand);border-bottom-color:var(--brand)}

@media (max-width:820px){
  .login{grid-template-columns:minmax(0,1fr);gap:24px;min-height:0;padding-block:28px}
  .scoregrid,.grid2,.grid3{grid-template-columns:minmax(0,1fr)}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .qbody.spr{grid-template-columns:minmax(0,1fr)}
  .exam .bar-in{grid-template-columns:auto 1fr auto}
  .exam .bar .sub{display:none}
  .tool span{display:none}
  .efoot-in{grid-template-columns:auto 1fr}
  .efoot .who-e{display:none}
  .who .name{display:none}
  .qbars{--n:11!important;height:auto}
  .qbars .col{height:90px}
  .qitem{grid-template-columns:auto minmax(0,1fr)}
  .qitem .tools{grid-column:1/-1;justify-content:flex-start}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* Reading and Writing: passage on the left, question on the right (Bluebook layout) */
.qbody.split{grid-template-columns:minmax(0,1fr) minmax(0,1fr);max-width:1160px;gap:0;align-items:start}
.qbody.split .passage{padding-right:28px;border-right:3px solid var(--line);max-height:calc(100vh - 230px);overflow:auto;font-size:17px}
.qbody.split .qside{padding-left:28px}
.qbody.split .qside .stem{font-size:17px}
.passage table{border-collapse:collapse;margin:4px 0 14px;font-family:var(--f-ui);font-size:14px}
.passage ul{padding-left:20px;margin:8px 0}
.passage li{margin-bottom:4px}
.breakbox{max-width:560px;margin:0 auto;padding-block:40px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:12px}
.breakbox h1{font-family:var(--f-q);font-size:34px;font-weight:600}
.breakbox .breakclock{font-family:var(--f-mono);font-size:64px;font-weight:600;color:var(--brand);line-height:1}
.breakbox p{color:var(--muted);margin:0}
.breakbox ul{text-align:left;color:var(--muted);font-size:14px;margin:0;padding-left:18px}
.secscores{display:flex;gap:22px;flex-wrap:wrap}
.secscores div{display:flex;flex-direction:column}
.secscores strong{font-family:var(--f-mono);font-size:26px;line-height:1.1}
.sectag{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;border-radius:6px;padding:2px 7px;background:var(--brand-soft);color:var(--brand)}
.sectag.math{background:var(--ok-soft);color:var(--ok)}
@media (max-width:820px){
  .qbody.split{grid-template-columns:minmax(0,1fr);gap:16px}
  .qbody.split .passage{padding-right:0;border-right:0;border-bottom:3px solid var(--line);padding-bottom:16px;max-height:none}
  .qbody.split .qside{padding-left:0}
}
.rvpassage{border-left:3px solid var(--line);padding:2px 0 2px 14px;margin-bottom:10px;color:var(--ink)}
.rvpassage table{border-collapse:collapse;font-family:var(--f-ui);font-size:14px;margin:4px 0 10px}

/* ===================================================================== visual refinements */
h1.page{font-family:var(--f-ui);font-weight:700;font-size:clamp(22px,2.6vw,28px);letter-spacing:-.015em}
h2.sec{font-size:17px;font-weight:700;letter-spacing:-.005em}
.label{font-size:13px;letter-spacing:0;text-transform:none;font-weight:500;color:var(--muted)}
table.t th{font-size:12.5px;letter-spacing:0;text-transform:none;font-weight:600;color:var(--muted);background:var(--subtle)}
.sectag{letter-spacing:.02em;text-transform:none;font-weight:600;border-radius:4px}
.card{box-shadow:none}
.stat{border-radius:8px}
.stat strong{font-size:24px;font-weight:600}
.btn{border-width:1px;font-weight:600;min-height:38px;padding:7px 16px}
.btn:hover{filter:none;background:var(--brand-deep);border-color:var(--brand-deep)}
.btn.ghost:hover,.btn.quiet:hover{background:var(--subtle);border-color:var(--line);color:var(--ink)}
.btn.danger:hover{background:var(--bad-soft);border-color:var(--bad);color:var(--bad)}
.btn.danger.armed,.btn.danger.armed:hover{background:var(--bad);color:#fff}
.linkbtn{font-weight:500;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.linkbtn:hover{background:none;color:var(--brand-deep)}
input.in,select.in,textarea.in{border-width:1px;background:var(--surface);border-color:#c8cbd2}
input.in:focus,select.in:focus,textarea.in:focus{box-shadow:0 0 0 3px var(--brand-soft)}
.chip{border-radius:4px;background:var(--subtle);border-color:transparent;color:var(--muted);font-weight:500}
.chip.brand{background:var(--brand-soft);border-color:transparent;color:var(--brand)}
.score{background:transparent;color:var(--ink);padding:0;font-size:15px}
/* header: logo, then underline tabs */
.apphead-in{min-height:56px;gap:28px}
.logo{color:var(--ink)}
.logo b{letter-spacing:.14em;font-size:13px}
.logo-mark .la{fill:var(--brand)}
.logo-mark .lb{fill:var(--brand-deep)}
.nav{gap:2px;align-self:stretch}
.nav a{display:flex;align-items:center;border-radius:0;padding:0 12px;border-bottom:2px solid transparent;font-weight:500;color:var(--muted)}
.nav a:hover{background:none;color:var(--ink)}
.nav a[aria-current="page"]{background:none;color:var(--ink);border-bottom-color:var(--brand);font-weight:600}
.avatar{background:var(--subtle);color:var(--ink);font-size:13px;width:32px;height:32px}
.menu-pop{border-radius:8px}
/* login: one plain card */
.signin{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;padding-block:40px}
.signin .card{width:100%;max-width:400px;padding:28px}
.signin h1{font-size:22px;font-weight:700;letter-spacing:-.01em}
.signin .sub{color:var(--muted);margin:4px 0 0;font-size:14px}
.signin footer{font-size:13px;color:var(--muted);text-align:center;max-width:400px}
/* results */
.scorecard{background:var(--surface);color:var(--ink);border:1px solid var(--line)}
.scorecard .n{font-size:56px;letter-spacing:-.02em}
.scorecard .scale{color:var(--muted);opacity:1}
.scorecard .label{color:var(--muted)!important;opacity:1!important}
.scorecard .split{border-top:1px solid var(--line)}
.scorecard .split,.scorecard .secscores span{color:var(--muted)}
.scorecard .split strong,.secscores strong{color:var(--ink)}
.dom .track{background:var(--subtle);border-radius:2px}
.dom .fill{border-radius:2px}
.rv{border-left-width:3px;border-radius:6px}
.explain{background:var(--subtle);border-radius:4px}
/* test cards become list rows */
.tests{grid-template-columns:minmax(0,1fr);gap:0;border:1px solid var(--line);border-radius:8px;background:var(--surface);overflow:hidden}
.tcard{border:0;border-radius:0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:6px 24px;padding:16px 18px}
.tcard:last-child{border-bottom:0}
.tcard > *{grid-column:1}
.tcard .foot{grid-column:2;grid-row:1 / span 3;margin:0;padding:0;justify-content:flex-end;gap:18px}
.tcard h3{font-size:16px}
/* exam shell: neutral bars like Bluebook */
.qhead{background:var(--subtle);border-radius:4px}
.qnum{border-radius:4px 0 0 4px}
.mark[aria-pressed="true"]{color:var(--warn)}
.cell .flag{color:var(--warn)}
.opt{border-radius:8px;border-width:1px}
.opt[aria-checked="true"]{box-shadow:0 0 0 1px var(--brand)}
.opt .let{border-width:1.5px}
.navbtn{border-radius:6px}
.legend i.ans{background:var(--brand);border-color:var(--brand)}
.cell{border-radius:4px}
.breakbox .breakclock{color:var(--ink)}
.calcbar{background:#2a2e36;color:#fff}
.calcresize{background:linear-gradient(135deg,transparent 50%,var(--line) 50%,var(--line) 58%,transparent 58%,transparent 70%,var(--line) 70%,var(--line) 78%,transparent 78%)}
.modal{border-radius:10px}
.tabs button[aria-selected="true"]{color:var(--ink)}
@media (max-width:820px){
  .tcard{grid-template-columns:minmax(0,1fr)}
  .tcard .foot{grid-column:1;grid-row:auto;justify-content:space-between}
  .nav a{padding:0 8px}
}

body{font-variant-numeric:tabular-nums}
.mono,.creds,table.t td.mono,.sprbox input{font-family:var(--f-code)}
.timer .clock{font-weight:700;font-size:21px;letter-spacing:.01em}
.scorecard .n{font-weight:700}
.scorecard .split{margin-top:20px}
.stat strong,.secscores strong,.scorecard .split strong{font-weight:700}
.tcard > .row{justify-content:flex-start;gap:10px}
.breakbox .breakclock{font-weight:700}
@media (max-width:820px){.tablewrap table.t{min-width:680px}}

/* ===================================================================== side menu (left) */
:root{--side:252px; --r-lg:14px; --teal:#0f766e; --teal-soft:#e3f3f1; --amber:#a15c07; --amber-soft:#fcf1df; --rose:#b4234a; --rose-soft:#fbe7ec; --violet:#5b3fb8; --violet-soft:#eeeafb}
@media (prefers-color-scheme:dark){:root{--teal:#5ccfc2; --teal-soft:#14302d; --amber:#f0b35c; --amber-soft:#36291a; --rose:#f08aa5; --rose-soft:#3a1c25; --violet:#b4a2f5; --violet-soft:#25203b}}
body:has(.sidenav){padding-left:calc(var(--side) + 28px);padding-right:max(28px,env(safe-area-inset-right,0px))}
.sidenav{position:fixed;top:0;left:0;bottom:0;width:var(--side);z-index:25;background:var(--surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:20px 14px 14px;gap:18px;overflow-y:auto}
.sidenav .logo{display:flex;align-items:center;gap:10px;text-decoration:none;padding:4px 10px 6px}
.sidenav .logo-mark{width:28px;height:30px}
.sidenav .logo b{font-size:14px;letter-spacing:.16em}
.sidenav nav{display:flex;flex-direction:column;gap:16px;flex:1}
.navgroup{display:flex;flex-direction:column;gap:2px}
.navlabel{font-size:11.5px;font-weight:600;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;padding:0 12px 6px}
.sidenav nav a{display:flex;align-items:center;gap:12px;padding:9px 12px;border-radius:10px;color:var(--muted);text-decoration:none;font-weight:500;font-size:14.5px}
.sidenav nav a:hover{background:var(--subtle);color:var(--ink)}
.sidenav nav a[aria-current="page"]{background:var(--brand-soft);color:var(--brand);font-weight:600}
.sidenav nav a .ic{flex:none}
.sideuser{border-top:1px solid var(--line);padding-top:12px}
.userbtn{display:flex;align-items:center;gap:10px;width:100%;border:0;background:none;padding:8px;border-radius:10px;text-align:left}
.userbtn:hover{background:var(--subtle)}
.userbtn .avatar{flex:none;background:var(--brand);color:var(--brand-ink)}
.userbtn .uname{display:flex;flex-direction:column;min-width:0;flex:1;line-height:1.25}
.userbtn .uname b{font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.userbtn .uname small{color:var(--muted);font-size:12.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.userbtn .uname{gap:2px}
.userbtn .uname .rolechip{background:none;padding:0;font-size:12.5px;font-weight:600;letter-spacing:0;line-height:1.25}
.sideuser .menu-pop{top:auto;bottom:calc(100% + 6px);left:0;right:0}
.tabbar{display:none}
@media (max-width:900px){
  body:has(.sidenav){padding-right:max(16px,env(safe-area-inset-right,0px));padding-left:max(16px,env(safe-area-inset-left,0px));padding-bottom:76px}
  .sidenav{position:sticky;width:auto;bottom:auto;flex-direction:row;align-items:center;padding:8px 16px;border-right:0;border-bottom:1px solid var(--line);overflow:visible;
    margin:0 calc(-1 * max(16px,env(safe-area-inset-right,0px))) 0 calc(-1 * max(16px,env(safe-area-inset-left,0px)))}
  .sidenav nav{display:none}
  .sideuser{border:0;padding:0;margin-left:auto}
  .userbtn .uname,.userbtn > .ic{display:none}
  .sideuser .menu-pop{top:calc(100% + 6px);bottom:auto;left:auto;right:0;min-width:200px}
  .tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:25;background:var(--surface);border-top:1px solid var(--line);
    padding:6px 6px calc(6px + env(safe-area-inset-bottom,0px));overflow-x:auto;scrollbar-width:none}
  .tabbar a{flex:1 0 64px;display:flex;flex-direction:column;align-items:center;gap:3px;padding:5px 4px;border-radius:10px;color:var(--muted);text-decoration:none;font-size:11px;font-weight:500;text-align:center;line-height:1.15}
  .tabbar a[aria-current="page"]{color:var(--brand);background:var(--brand-soft);font-weight:600}
}

/* ===================================================================== sign-in */
.signin .logo{flex-direction:column;gap:14px;text-decoration:none}
.signin .logo-mark{width:92px;height:102px}
.signin .logo b{font-size:22px;letter-spacing:.24em}
.signin .card{border-radius:var(--r-lg);padding:30px}

/* ===================================================================== home dashboard */
.hello{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap}
.hello p{margin:6px 0 0;color:var(--muted)}
.dash{display:grid;grid-template-columns:minmax(0,1.15fr) repeat(3,minmax(0,1fr));gap:14px}
.dcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:18px;display:flex;flex-direction:column;gap:6px;min-width:0;text-decoration:none;color:inherit}
a.dcard:hover{border-color:var(--brand-line)}
.dcard .k{display:flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;color:var(--muted)}
.dcard .v{font-size:30px;font-weight:700;letter-spacing:-.02em;line-height:1.1}
.dcard .v small{font-size:15px;font-weight:500;color:var(--muted);letter-spacing:0}
.dcard .s{font-size:13px;color:var(--muted)}
.goal{flex-direction:row;align-items:center;gap:18px}
.ring{--p:0;flex:none;width:96px;height:96px;border-radius:50%;display:grid;place-items:center;
  background:conic-gradient(var(--brand) calc(var(--p) * 1%),var(--subtle) 0)}
.ring > div{width:76px;height:76px;border-radius:50%;background:var(--surface);display:grid;place-items:center;text-align:center;line-height:1.1}
.ring b{font-size:22px}
.ring span{font-size:11.5px;color:var(--muted)}
.ic-amber{color:var(--amber)} .ic-teal{color:var(--teal)} .ic-rose{color:var(--rose)} .ic-brand{color:var(--brand)}
.quick{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.qtile{border-radius:var(--r-lg);padding:18px;display:flex;flex-direction:column;gap:10px;text-decoration:none;color:var(--ink);border:1px solid transparent;min-height:150px;transition:transform .12s ease}
.qtile:hover{transform:translateY(-2px)}
.qtile .qi{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:var(--surface)}
.qtile h3{font-size:16px}
.qtile p{margin:0;font-size:13.5px;color:var(--muted);flex:1}
.qtile .go{font-size:13.5px;font-weight:600}
.t-rose{background:var(--rose-soft)} .t-rose .qi,.t-rose .go{color:var(--rose)}
.t-violet{background:var(--violet-soft)} .t-violet .qi,.t-violet .go{color:var(--violet)}
.t-teal{background:var(--teal-soft)} .t-teal .qi,.t-teal .go{color:var(--teal)}
.t-brand{background:var(--brand-soft)} .t-brand .qi,.t-brand .go{color:var(--brand)}
.two{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:14px}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px}
.continue{display:flex;align-items:center;gap:14px;background:var(--amber-soft);border-radius:var(--r-lg);padding:14px 18px;color:var(--ink)}
.continue .spacer{flex:1}
.progline{display:flex;flex-direction:column;gap:12px}
.progline .pl{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 10px;font-size:14px}
.progline .bar{grid-column:1 / -1;height:8px;border-radius:99px;background:var(--subtle);overflow:hidden}
.progline .bar i{display:block;height:100%;border-radius:99px;background:var(--brand)}
.progline .bar i.teal{background:var(--teal)} .progline .bar i.violet{background:var(--violet)}
@media (max-width:1100px){.dash{grid-template-columns:repeat(2,minmax(0,1fr))}.quick{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:900px){.two{grid-template-columns:minmax(0,1fr)}}
@media (max-width:520px){.dash{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.goal{grid-column:1 / -1}.quick{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.qtile{min-height:0}.qtile p{display:none}}

/* ===================================================================== vocabulary */
.sets{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.setcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:18px;display:flex;flex-direction:column;gap:10px;text-decoration:none;color:inherit}
.setcard:hover{border-color:var(--brand-line)}
.setcard h3{font-size:16px}
.setcard .words{font-size:13.5px;color:var(--muted);font-family:var(--f-q);font-style:italic}
.meter{height:8px;border-radius:99px;background:var(--subtle);overflow:hidden;display:flex}
.meter i{display:block;height:100%}
.meter i.k{background:var(--teal)} .meter i.l{background:var(--amber)}
.mkey{display:flex;gap:14px;font-size:12.5px;color:var(--muted)}
.mkey span::before{content:"";display:inline-block;width:8px;height:8px;border-radius:2px;margin-right:6px;background:var(--subtle)}
.mkey .k::before{background:var(--teal)} .mkey .l::before{background:var(--amber)}
.seg{display:inline-flex;background:var(--subtle);border-radius:10px;padding:3px;gap:2px}
.seg button{border:0;background:none;padding:6px 14px;border-radius:8px;font-weight:600;font-size:14px;color:var(--muted)}
.seg button[aria-pressed="true"]{background:var(--surface);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.08)}
.wordlist{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);overflow:hidden}
.word{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 16px;padding:14px 18px;border-bottom:1px solid var(--line)}
.word:last-child{border-bottom:0}
.word h3{font-family:var(--f-q);font-size:19px;font-weight:600}
.word h3 small{font-family:var(--f-ui);font-size:12.5px;font-weight:500;color:var(--muted);margin-left:8px;font-style:italic}
.word .def{margin:0;font-size:14.5px}
.word .ex{margin:0;font-size:14px;color:var(--muted);font-family:var(--f-q);font-style:italic}
.word .acts{grid-column:2;grid-row:1 / span 3;display:flex;gap:6px;align-items:flex-start}
.mark-btn{border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:5px 10px;font-size:13px;font-weight:600;color:var(--muted)}
.mark-btn[aria-pressed="true"].k{background:var(--teal-soft);border-color:var(--teal);color:var(--teal)}
.mark-btn[aria-pressed="true"].l{background:var(--amber-soft);border-color:var(--amber);color:var(--amber)}
.flash{perspective:1200px;max-width:560px;width:100%;margin:0 auto;height:300px;cursor:pointer}
.flash-in{position:relative;width:100%;height:100%;transition:transform .45s ease;transform-style:preserve-3d}
.flash.flipped .flash-in{transform:rotateY(180deg)}
.face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:18px;border:1px solid var(--line);background:var(--surface);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:28px;text-align:center}
.face.back{transform:rotateY(180deg);background:var(--brand-soft);border-color:var(--brand-line)}
.face .w{font-family:var(--f-q);font-size:40px;font-weight:600}
.face .pos{color:var(--muted);font-style:italic}
.face .d{font-size:18px}
.face .e{font-family:var(--f-q);font-style:italic;color:var(--muted)}
.face .hintline{position:absolute;bottom:14px;font-size:12.5px;color:var(--muted)}
.cardnav{display:flex;justify-content:center;align-items:center;gap:10px;flex-wrap:wrap}
.quizq{max-width:640px;width:100%;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.quizq .w{font-family:var(--f-q);font-size:34px;font-weight:600;text-align:center;margin:8px 0}
button.choice{display:flex;gap:12px;align-items:flex-start;text-align:left;width:100%;border:1px solid var(--line);background:var(--surface);border-radius:12px;padding:12px 14px;font-size:15px}
button.choice:hover:not(:disabled){border-color:var(--brand)}
button.choice .let{flex:none;width:26px;height:26px;border-radius:50%;border:1.5px solid var(--line);display:grid;place-items:center;font-weight:700;font-size:13px}
button.choice.right{border-color:var(--ok);background:var(--ok-soft)} button.choice.right .let{border-color:var(--ok);color:var(--ok)}
button.choice.wrong{border-color:var(--bad);background:var(--bad-soft)} button.choice.wrong .let{border-color:var(--bad);color:var(--bad)}
button.choice.picked{border-color:var(--brand);box-shadow:0 0 0 1px var(--brand)} button.choice.picked .let{background:var(--brand);border-color:var(--brand);color:var(--brand-ink)}
button.choice:disabled{cursor:default;color:inherit}
.steps{height:6px;border-radius:99px;background:var(--subtle);overflow:hidden}
.steps i{display:block;height:100%;background:var(--brand);transition:width .2s}
.bigscore{text-align:center;display:flex;flex-direction:column;gap:6px;align-items:center;padding:20px}
.bigscore b{font-size:52px;letter-spacing:-.03em;line-height:1}

/* ===================================================================== reading */
.filters2{display:flex;gap:8px;flex-wrap:wrap}
.lib{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.pcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:18px;display:flex;flex-direction:column;gap:8px;text-decoration:none;color:inherit}
.pcard:hover{border-color:var(--brand-line)}
.pcard h3{font-family:var(--f-q);font-size:19px;font-weight:600}
.pcard p{margin:0;font-size:14px;color:var(--muted);flex:1}
.pcard .row{font-size:13px}
.lvl{font-size:12px;font-weight:600;border-radius:99px;padding:2px 9px;background:var(--subtle);color:var(--muted)}
.lvl.Easy{background:var(--teal-soft);color:var(--teal)} .lvl.Medium{background:var(--amber-soft);color:var(--amber)} .lvl.Hard{background:var(--rose-soft);color:var(--rose)}
.cat{font-size:12.5px;font-weight:600;color:var(--brand)}
.done-badge{font-size:12.5px;font-weight:600;color:var(--ok)}
.reader{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:20px;align-items:start}
.reader .ptext{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 28px;font-family:var(--f-q);font-size:17.5px;line-height:1.7;position:sticky;top:16px;max-height:calc(100vh - 32px);overflow:auto}
.reader .ptext p{margin:0 0 14px}
.reader .qs{display:flex;flex-direction:column;gap:14px}
.rq{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:18px;display:flex;flex-direction:column;gap:10px}
.rq .stem{font-family:var(--f-q);font-size:16.5px}
.rq .explain{font-size:14px;padding:10px 12px}
.verdict{font-weight:700;font-size:14px}
.verdict.ok{color:var(--ok)} .verdict.no{color:var(--bad)}
@media (max-width:900px){.reader{grid-template-columns:minmax(0,1fr)}.reader .ptext{position:static;max-height:none;padding:20px}}

/* ===================================================================== review mistakes */
.rvbox{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;display:flex;flex-direction:column;gap:14px}
.rvbox .stem{font-family:var(--f-q);font-size:17px}
.rvbox .sprin{max-width:220px}
.empty-hero{text-align:center;padding:48px 20px;display:flex;flex-direction:column;align-items:center;gap:10px}
.empty-hero .ic{width:40px;height:40px;color:var(--ok)}
@media (max-width:520px){
  .dash{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
  .dash .dcard{padding:14px 12px}
  .dash .dcard:not(.goal) .s{display:none}
  .dash .dcard .v{font-size:24px}
  .dash .dcard .k{font-size:12.5px;gap:6px}
  .goal{grid-column:1 / -1}
}
/* profile photo */
img.avatar{object-fit:cover;padding:0;display:block}
.avatar.xl{width:112px;height:112px;font-size:36px;border-radius:50%}
span.avatar.xl{background:var(--brand-soft);color:var(--brand)}
.photoedit{display:flex;align-items:center;gap:22px;margin:10px 0 6px;flex-wrap:wrap}
.photoprev{flex:none}
.photoedit .hint{font-size:12px;color:var(--muted)}
.namecell{display:flex;align-items:center;gap:10px}.namecell .avatar{width:30px;height:30px;font-size:12px;flex:none}
.namecell .avatar.lg{width:56px;height:56px;font-size:20px}

/* ===================================================================== test page (Bluebook look) */
:root{--stripe:repeating-linear-gradient(90deg,#1f2a6b 0 70px,transparent 70px 80px,#4f8a5b 80px 150px,transparent 150px 160px,#b23b5a 160px 230px,transparent 230px 240px,#e8dcc4 240px 310px,transparent 310px 320px)}
body.exam-mode{padding-left:0;padding-right:0}
.exam .bar{border-bottom:0;position:sticky}
.exam .bar::after,.efoot::before{content:"";position:absolute;left:0;right:0;height:3px;background:var(--stripe)}
.exam .bar::after{bottom:0}
.efoot{border-top:0;background:#e9edf8}
.efoot::before{top:0}
.exam .bar-in,.efoot-in{max-width:none;padding-inline:24px}
.exam .bar-in{padding-block:12px 14px}
.exam .bar h2{font-size:19px;font-weight:700}
.dirbtn{border:0;background:none;color:var(--brand);font-weight:500;font-size:15px;padding:2px 0;display:inline-flex;align-items:center;gap:6px;margin-top:2px}
.timer{flex-direction:column;gap:0}
.timer .clock{font-size:22px;font-weight:700;min-height:28px}
.timer.hidden .clock{min-height:28px}
.hidebtn{border:0;background:none;color:var(--muted);padding:0 6px;border-radius:6px;display:grid;place-items:center}
.hidebtn:hover{color:var(--ink)}
.toolbox{display:flex;justify-content:flex-end;gap:4px;align-items:center}
.toolset{gap:4px}
.tool{font-size:13px;padding:6px 12px;color:var(--muted)}
.tool svg{width:22px;height:22px}
.tool[aria-pressed="true"]{background:#dde6fb;color:var(--brand)}
.toolbox .menu-pop{right:0;top:calc(100% + 6px)}
.dirpop{top:calc(84px + env(safe-area-inset-top,0px));bottom:auto;left:24px;transform:none;width:min(640px,calc(100% - 48px));font-size:15px;line-height:1.6}
.dirpop p{margin:0 0 10px}
.exam .stage{max-width:none;padding:0 24px 110px;margin:0}
.qbody{padding-top:24px}
.qbody.split{max-width:none;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0;padding-top:0}
.qbody.split .passage{border-right:0;padding:24px 28px 24px 0;max-height:calc(100dvh - 170px);overflow:auto;position:relative}
.qbody.split .qside{border-left:5px solid #d5d8de;padding:24px 0 24px 28px;min-height:calc(100dvh - 170px)}
.qhead{background:#eef0f3;border-radius:0;padding:0;margin-bottom:22px;position:relative;min-height:40px}
.qhead::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:3px;background:var(--stripe)}
.qnum{background:var(--brand);color:#fff;border-radius:0;padding:0 14px;align-self:stretch;display:grid;place-items:center;font-family:var(--f-ui);font-size:16px;min-width:40px}
.mark{color:var(--ink);font-weight:500}
.sprdir{font-family:var(--f-ui);font-size:16px;line-height:1.6}
.sprdir h3{font-size:20px;font-weight:700;margin:0 0 8px}
.sprdir h4{font-size:16px;margin:12px 0 8px}
.sprdir ul{padding-left:22px;margin:0}
.sprdir li{margin-bottom:6px}
.sprex{width:100%;border-collapse:collapse;text-align:center;font-size:15.5px}
.sprex th{background:#f3f4f7;font-weight:700;padding:10px}
.sprex th,.sprex td{border:1px solid #d5d8de;padding:10px;vertical-align:middle;line-height:1.75}
.sprbox{margin-top:18px}
.sprbox input{width:100%;font-family:var(--f-ui);font-size:18px;border:2px solid var(--ink);border-radius:10px;padding:16px 18px;background:var(--surface)}
.sprbox input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.sprbox input::placeholder{color:#8a8f99}
.efoot-in{padding-block:12px}
.navbtn{background:var(--brand);color:#fff;border-radius:12px;padding:10px 18px;font-size:16px;font-weight:500}
.pillbtn{border:0;border-radius:999px;background:var(--brand);color:#fff;font-weight:600;font-size:16px;padding:10px 24px;min-height:44px}
.pillbtn:hover{background:var(--brand-deep)}
.pillbtn:disabled{background:#9aa8d6;cursor:not-allowed}
.calcwin{border-radius:12px;border-color:#cfd3db}
.calcbar{background:var(--surface);color:var(--ink);border-bottom:1px solid var(--line);padding:10px 10px 10px 14px}
.calcbar .grip{width:20px;height:20px;opacity:.8}
.calcbar b{font-weight:600;font-size:15px}
.calcicon{color:var(--ink)}
.calcfoot{display:none}
@media (prefers-color-scheme:dark){.efoot{background:var(--subtle)}.qhead{background:var(--subtle)}.sprex th{background:var(--subtle)}.qbody.split .qside{border-left-color:var(--line)}.sprex th,.sprex td{border-color:var(--line)}}
@media (max-width:820px){
  .exam .bar-in,.efoot-in{padding-inline:12px}
  .exam .stage{padding:0 12px 110px}
  .qbody.split .passage{padding:16px 0;max-height:none}
  .qbody.split .qside{border-left:0;padding:16px 0;min-height:0;border-top:5px solid #d5d8de}
  .exam .bar h2{font-size:15px}
  .tool span{display:none}
  .pillbtn{padding:8px 16px;font-size:15px}
}
.calcicon:hover{background:var(--subtle)}

/* ===================================================================== score page */
:root{--ring:#2f5fd0;--ring-track:#e6e9f2;--total:#2f5fd0}
@media (prefers-color-scheme:dark){:root{--ring:#8ea7ea;--ring-track:#262b36;--total:#2b4fa8}}
.scoretrio{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:center}
.scoretrio.two{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr)}
.seccard,.totalcard{border-radius:22px;padding:26px 22px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px}
.seccard{background:var(--surface);border:1px solid var(--line)}
.seccard h3,.totalcard h3{font-size:19px;font-weight:600}
.seccard p{margin:0;color:var(--muted);font-size:16px}
.ringwrap{position:relative;width:190px;height:190px}
.sring{width:100%;height:100%}
.rv-n{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.rv-n b{font-size:40px;font-weight:700;line-height:1}
.rv-n span{color:var(--muted);font-size:15px;margin-top:4px}
.totalcard{background:var(--total);color:#fff;padding:36px 26px;box-shadow:0 18px 40px rgba(47,95,208,.28);min-height:100%;justify-content:center}
.totalcard h3{color:#eaf0ff}
.totalcard .tn{display:flex;align-items:baseline;gap:4px}
.totalcard .tn b{font-size:76px;font-weight:800;letter-spacing:-.03em;line-height:1}
.totalcard .tn span{font-size:28px;opacity:.75}
.tbar{width:min(240px,80%);height:10px;border-radius:99px;background:rgba(255,255,255,.3);overflow:hidden}
.tbar i{display:block;height:100%;background:#fff;border-radius:99px}
.totalcard p{margin:0;color:#dfe7ff;font-size:15px}
.perfbox{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:24px 26px}
.perf{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.ptile{border:1px solid var(--line);border-radius:16px;padding:18px;display:flex;align-items:center;gap:16px}
.ptile b{display:block;font-size:30px;font-weight:700;line-height:1.1}
.ptile span{color:var(--muted);font-size:14.5px}
.pi{width:56px;height:56px;border-radius:14px;display:grid;place-items:center;flex:none}
.pi.ok{background:var(--ok-soft);color:var(--ok)} .pi.bad{background:var(--bad-soft);color:var(--bad)} .pi.blank{background:var(--subtle);color:var(--muted)} .pi.acc{background:var(--brand-soft);color:var(--brand)}
.modline{display:flex;gap:8px 22px;flex-wrap:wrap;margin-top:16px;font-size:14px;color:var(--muted)}
.modline b{color:var(--ink)}
@media (max-width:980px){.scoretrio{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.scoretrio .totalcard{grid-column:1 / -1;order:-1}.perf{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:520px){.ringwrap{width:130px;height:130px}.rv-n b{font-size:30px}.seccard{padding:18px 10px}.seccard h3{font-size:15px}.seccard p{font-size:13.5px}.totalcard .tn b{font-size:58px}.perfbox{padding:18px}.ptile{padding:12px;gap:10px}.pi{width:42px;height:42px}.ptile b{font-size:24px}.scoretrio.two{grid-template-columns:minmax(0,1fr)}}
body.exam-mode{background:var(--surface)}
/* fullscreen gate */
.fsgate{position:fixed;inset:0;z-index:60;background:#1c1c1e;color:#fff;display:grid;place-items:center;padding:24px;text-align:center}
.fsbox{max-width:460px;display:flex;flex-direction:column;align-items:center;gap:14px}
.fsnum{width:56px;height:56px;border-radius:14px;background:#2c2c2e;display:grid;place-items:center;font-size:22px;font-weight:700}
.fsnum:empty{display:none}
.fsgate h2{font-size:28px;font-weight:700}
.fsgate p{margin:0;color:#c7c7cc;font-size:16px;line-height:1.5}
.fsbtn{margin-top:14px;width:min(280px,100%);border:0;border-radius:14px;background:#2f5fd0;color:#fff;font-weight:600;font-size:17px;padding:16px}
.fsbtn:hover{background:#2852b8}
.fsalt{display:flex;flex-direction:column;gap:4px;margin-top:10px;font-size:14px;color:#8e8e93}
.fsalt .linkbtn{color:#d1d1d6;font-weight:500}
.tablewrap table.t td:first-child b{white-space:nowrap}

/* sign-in background: a faint SAT worksheet around the card */
body:has(.signin){background-color:var(--bg);background-image:linear-gradient(var(--sg-grid) 1px,transparent 1px),linear-gradient(90deg,var(--sg-grid) 1px,transparent 1px);background-size:28px 28px;background-attachment:fixed}
:root{--sg-grid:rgba(31,60,136,.05);--sg-ink:rgba(31,60,136,.32)}
@media (prefers-color-scheme:dark){:root{--sg-grid:rgba(142,167,234,.05);--sg-ink:rgba(142,167,234,.28)}}
.signin-bg{position:fixed;inset:0;pointer-events:none;z-index:0;color:var(--sg-ink)}
.signin-bg svg{width:100%;height:100%;display:block}
.signin{position:relative;z-index:1}
.signin .card{box-shadow:var(--shadow)}
.sg-grid line{stroke:var(--sg-ink);stroke-width:1;opacity:.35}
.sg-ink{stroke:var(--sg-ink);stroke-width:2;fill:none}
.sg-fill{fill:var(--sg-ink);stroke:none}
.sg-solid{fill:var(--sg-ink)}
.signin-bg text{fill:var(--sg-ink);stroke:none}
.sg-math{font-family:var(--f-q);font-style:italic;font-size:24px}
.sg-num{font-family:var(--f-ui);font-weight:700;font-size:20px}
.sg-let{font-family:var(--f-ui);font-weight:700;font-size:14px;text-anchor:middle}
.signin-bg .sg-let.on{fill:var(--bg)}
.sg-label{font-family:var(--f-ui);font-weight:600;font-size:15px;letter-spacing:.12em}
.sg-low{letter-spacing:.02em;font-weight:500}
.sg-big{font-family:var(--f-q);font-weight:600;font-size:64px}
.sg-word{font-family:var(--f-q);font-style:italic;font-weight:600;font-size:30px}
@media (max-width:900px){.signin-bg{display:none}}

/* active section in the menu: a solid, unmistakable fill */
.sidenav nav a[aria-current="page"]{background:var(--brand);color:#fff;font-weight:600;box-shadow:0 1px 2px rgba(20,24,32,.12)}
.sidenav nav a[aria-current="page"] .ic{color:#fff}
.sidenav nav a[aria-current="page"]:hover{background:var(--brand-deep);color:#fff}
@media (prefers-color-scheme:dark){.sidenav nav a[aria-current="page"],.sidenav nav a[aria-current="page"] .ic{color:var(--brand-ink)}.sidenav nav a[aria-current="page"]:hover{background:var(--brand);color:var(--brand-ink)}}
@media (max-width:820px){.tabbar a[aria-current="page"]{background:var(--brand);color:#fff}
  @media (prefers-color-scheme:dark){.tabbar a[aria-current="page"]{color:var(--brand-ink)}}}

/* Reading and Writing: highlights and notes */
mark.hl{color:inherit;border-radius:2px;cursor:pointer;padding:1px 0;-webkit-box-decoration-break:clone;box-decoration-break:clone}
mark.hl-y{background:#fde68a}
mark.hl-b{background:#bfdbfe}
mark.hl-p{background:#fbcfe8}
mark.hl-u{background:none;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px;text-decoration-color:var(--brand)}
mark.hl.noted{box-shadow:inset 0 -2px 0 rgba(23,25,30,.55)}
mark.hl.noted.end::after{content:"";display:inline-block;width:14px;height:12px;margin-left:3px;vertical-align:1px;background:var(--brand);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 12'%3E%3Cpath d='M1 1h12v7H5l-3 3V8H1z'/%3E%3C/svg%3E") center/contain no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 12'%3E%3Cpath d='M1 1h12v7H5l-3 3V8H1z'/%3E%3C/svg%3E") center/contain no-repeat}
@media (prefers-color-scheme:dark){mark.hl-y{background:rgba(250,204,21,.38)}mark.hl-b{background:rgba(96,165,250,.38)}mark.hl-p{background:rgba(244,114,182,.38)}mark.hl.noted{box-shadow:inset 0 -2px 0 rgba(231,233,237,.6)}}
.annpop{position:fixed;z-index:45;display:flex;align-items:center;gap:6px;padding:6px 8px;background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow)}
.annpop .sw{width:28px;height:28px;border-radius:50%;border:2px solid transparent;padding:0;display:grid;place-items:center;font-weight:700;font-size:14px;color:var(--ink)}
.annpop .sw[aria-pressed="true"]{border-color:var(--ink)}
.annpop .sw-y{background:#fde68a}.annpop .sw-b{background:#bfdbfe}.annpop .sw-p{background:#fbcfe8}
.annpop .sw-u{background:var(--subtle);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:2px;border-color:var(--line)}
.annpop .sep{width:1px;align-self:stretch;background:var(--line);margin:0 2px}
.annact{display:flex;align-items:center;gap:6px;border:0;background:none;border-radius:6px;padding:5px 8px;font-size:13px;font-weight:600;color:var(--ink)}
.annact:hover{background:var(--subtle)}
.annact svg{width:18px;height:18px}
.annpanel{position:fixed;left:0;right:0;bottom:calc(64px + env(safe-area-inset-bottom,0px));z-index:44;background:var(--surface);border-top:1px solid var(--line);box-shadow:0 -10px 30px rgba(20,24,32,.12)}
.annhead{display:flex;justify-content:space-between;align-items:center;padding:8px 24px;background:var(--ink);color:var(--surface)}
.annhead .x{color:var(--surface);background:transparent}
.annbody{max-width:900px;margin:0 auto;padding:14px 24px 16px;display:flex;flex-direction:column;gap:10px}
.annquote{margin:0;padding:2px 0 2px 12px;border-left:3px solid #f2c94c;color:var(--muted);font-family:var(--f-q);font-size:15px}
.annbody textarea{width:100%;border:1.5px solid var(--line);border-radius:6px;padding:10px 12px;background:var(--bg);resize:vertical;min-height:72px}
.annbody textarea:focus{border-color:var(--brand);outline:none}
.annbody .spacer{flex:1}
.annbody .row{display:flex;gap:8px;align-items:center}

/* home: last practice test score, shown large */
.exam-hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:28px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 28px;position:relative;overflow:hidden}
.exam-hero::before{content:"";position:absolute;inset:0 auto 0 0;width:5px;background:var(--brand)}
.eh-k{font-size:12.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.eh-score{display:flex;align-items:baseline;gap:8px;margin-top:6px;line-height:1}
.eh-score b{font-family:var(--f-q);font-weight:600;font-size:clamp(64px,9vw,96px);letter-spacing:-.03em;color:var(--brand)}
.eh-score span{font-size:22px;font-weight:600;color:var(--muted)}
.eh-meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px;margin-top:10px;font-size:14px}
.eh-delta{font-weight:700;color:var(--muted)}
.eh-delta small{font-weight:500;font-size:13px}
.eh-delta.up{color:var(--ok)}.eh-delta.down{color:var(--bad)}
.eh-secs{display:flex;flex-direction:column;gap:18px;border-left:1px solid var(--line);padding-left:28px}
.eh-sec span{display:block;font-size:13.5px;font-weight:600;color:var(--muted)}
.eh-sec b{display:block;font-family:var(--f-q);font-weight:600;font-size:44px;line-height:1.1;letter-spacing:-.02em}
.eh-sec b small{font-family:var(--f-ui);font-size:16px;font-weight:600;color:var(--muted);margin-left:4px;letter-spacing:0}
.eh-sec .bar{height:6px;border-radius:99px;background:var(--subtle);overflow:hidden;margin-top:8px}
.eh-sec .bar i{display:block;height:100%;background:var(--brand);border-radius:99px}
.exam-hero.empty{grid-template-columns:minmax(0,1fr) auto}
.eh-none{font-family:var(--f-q);font-size:28px;font-weight:600;margin-top:6px}
@media (max-width:820px){.exam-hero,.exam-hero.empty{grid-template-columns:minmax(0,1fr);padding:22px 20px}.eh-secs{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:18px;flex-direction:row;gap:20px}.eh-sec{flex:1}.eh-sec b{font-size:34px}}

/* Desmos docked on the left, question on the right, draggable divider */
.calc-open .calcwin{border-radius:0;border:0;border-right:1px solid var(--line);box-shadow:none;min-width:0;min-height:0;padding-right:14px;background:var(--surface)}
.calc-open .calcbar{cursor:default}
.calcsplit{position:absolute;top:0;right:0;bottom:0;width:14px;cursor:col-resize;touch-action:none;z-index:3;display:grid;place-items:center;background:var(--subtle);border-left:1px solid var(--line)}
.calcsplit span{width:4px;height:44px;border-radius:99px;background:#9aa0ab;transition:background .15s,height .15s}
.calcsplit:hover span,.calcsplit:focus-visible span,.calc-dragging .calcsplit span{background:var(--brand);height:64px}
.calcsplit:focus-visible{outline:2px solid var(--brand);outline-offset:-2px}
.calc-dragging,.calc-dragging *{cursor:col-resize!important;user-select:none!important}
@media (max-width:699px){.calcsplit{display:none}.calc-open .calcwin{padding-right:0;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}}
.calc-open .qbody.split{grid-template-columns:minmax(0,1fr)}
.calc-open .qbody.split .passage{max-height:none;padding:20px 0 16px;border-bottom:3px solid var(--line)}
.calc-open .qbody.split .qside{border-left:0;padding:20px 0;min-height:0}
/* Bluebook: with Desmos open, the answer-entry directions make room for the calculator */
.calc-open .qbody.split .passage.sprdir{display:none}
.calc-open .qbody.spr .qside{padding-top:24px}

/* logo wordmark: DOMBIT with "next level" underneath */
.logo-word{display:flex;flex-direction:column;align-items:flex-start;line-height:1}
.logo-word small{font-family:var(--f-ui);font-weight:500;font-size:.72em;letter-spacing:.04em;color:var(--muted);margin-top:3px;text-transform:lowercase}
.sidenav .logo-word small{font-size:11px;margin-top:3px}
.signin .logo-word{align-items:flex-start}
.signin .logo-word small{font-size:15px;margin-top:5px;letter-spacing:.05em}
.signin .logo{flex-direction:row;gap:14px;align-items:center}
.signin .logo-mark{width:62px;height:68px}
.signin .logo b{font-size:30px;letter-spacing:.18em}

/* smoother page changes */
body::before{content:"";position:fixed;top:0;left:0;height:3px;width:0;background:var(--brand);z-index:100;opacity:0;pointer-events:none}
body.busy::before{opacity:1;animation:loadbar 1.6s cubic-bezier(.2,.7,.3,1) forwards}
@keyframes loadbar{0%{width:0}60%{width:70%}100%{width:88%}}
#app.enter main{animation:pageIn .22s ease-out both}
@keyframes pageIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.spin{display:inline-block;width:34px;height:34px;border-radius:50%;border:3px solid var(--line);border-top-color:var(--brand);animation:spin .8s linear infinite;margin-bottom:14px}
@keyframes spin{to{transform:rotate(360deg)}}
.sidenav nav a,.tabbar a,.btn,.tool,.qtile,.dcard,.tcard{transition:background-color .15s,color .15s,border-color .15s,box-shadow .15s,transform .15s}
.qtile:hover,.tcard:hover{transform:translateY(-2px)}
@media (prefers-reduced-motion:reduce){#app.enter main,body.busy::before,.spin{animation:none}.qtile:hover,.tcard:hover{transform:none}}

/* Big numbers on student pages: Outfit (clear, modern digits) */
:root{--f-num:"Outfit","Public Sans",system-ui,sans-serif}
.eh-score b,.eh-sec b,.dcard .v,.ring b,.totalcard .tn b,.totalcard .tn span,.rv-n b,.ptile b,.bigscore b,.secscores strong,.scorecard .n,.stat strong,.breakbox .breakclock,.timer .clock{font-family:var(--f-num);font-variant-numeric:tabular-nums}
.eh-score b{font-weight:700;letter-spacing:-.02em}
.eh-sec b{font-weight:600;letter-spacing:-.01em}
.dcard .v,.ptile b,.rv-n b{font-weight:600}
/* score page: section cards and summary tiles are clickable filters */
button.seccard,button.totalcard,button.ptile{font:inherit;color:inherit;cursor:pointer;width:100%;transition:box-shadow .15s,border-color .15s,transform .15s}
button.totalcard{color:#fff;border:0}
button.ptile{background:var(--surface);text-align:left}
button.seccard:hover,button.ptile:hover{border-color:var(--brand-line)}
button.seccard[aria-pressed="true"]{border-color:var(--ring);box-shadow:0 0 0 2px var(--ring)}
button.totalcard[aria-pressed="false"]{opacity:.82}
button.totalcard[aria-pressed="true"]{box-shadow:0 0 0 3px var(--surface),0 0 0 6px var(--total),0 18px 40px rgba(47,95,208,.28)}
.seehint{font-size:13px;font-weight:600;color:var(--brand)}
button.seccard[aria-pressed="true"] .seehint{visibility:hidden}
/* practice tests: simple cards with name and start button */
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.ptest{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:26px 24px 24px;display:flex;flex-direction:column;gap:10px;min-height:190px;box-shadow:0 1px 2px rgba(20,24,32,.04)}
.ptest h3{font-size:22px;font-weight:700;letter-spacing:-.01em}
.pnote{align-self:flex-start;font-size:13px;font-weight:600;color:var(--warn);background:var(--warn-soft);border-radius:99px;padding:3px 10px}
.pbtn{margin-top:auto;display:flex;align-items:center;justify-content:center;gap:8px;width:100%;border:0;border-radius:14px;background:#2f5fec;color:#fff;font:inherit;font-size:17px;font-weight:600;padding:15px 18px;cursor:pointer}
.pbtn:hover{background:#2550d4}
.pbtn:disabled{background:var(--subtle);color:var(--muted);cursor:default}
/* finished test cards */
.rcard{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:24px;display:flex;flex-direction:column;gap:6px;text-decoration:none;color:inherit;box-shadow:0 1px 2px rgba(20,24,32,.04);transition:border-color .15s}
.rcard h3{font-size:20px;font-weight:700;letter-spacing:-.01em}
.rdate{font-size:13.5px;color:var(--muted)}
.rtotal{display:flex;align-items:baseline;gap:4px;margin-top:8px}
.rtotal b{font-family:var(--f-num);font-size:52px;font-weight:700;line-height:1;color:var(--brand);letter-spacing:-.02em}
.rtotal span{font-size:18px;font-weight:600;color:var(--muted)}
.rsecs{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}
.rsecs div{background:var(--subtle);border-radius:12px;padding:10px 12px;display:flex;flex-direction:column;gap:2px}
.rsecs span{font-size:12.5px;color:var(--muted);font-weight:500}
.rsecs b{font-family:var(--f-num);font-size:24px;font-weight:600}
.rlink{margin-top:10px;margin-left:-10px;align-self:flex-start;display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border-radius:10px;font-size:14px;font-weight:600;color:var(--brand);text-decoration:none;transition:background .15s,color .15s}
.rlink span{transition:transform .15s}
.rlink:hover{background:var(--brand-soft)}
.rlink:hover span{transform:translateX(3px)}
.rlink:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.rhidden{margin-top:12px;background:var(--subtle);border-radius:12px;padding:14px;font-size:14px;color:var(--muted)}
.rsecs span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
table.t td label.check{white-space:nowrap}
.pwbtn{border:0;background:none;color:var(--muted);padding:4px;border-radius:6px;display:inline-grid;place-items:center;vertical-align:middle;cursor:pointer}
.pwbtn:hover{background:var(--subtle);color:var(--ink)}
.pwtext{display:inline-block;min-width:92px;vertical-align:middle}
/* collapsible left menu */
.sidetop{display:flex;align-items:center;justify-content:space-between;gap:6px}
.sidetoggle{border:0;background:none;color:var(--muted);padding:7px;border-radius:9px;display:grid;place-items:center;cursor:pointer;flex:none}
.sidetoggle:hover{background:var(--subtle);color:var(--ink)}
@media (min-width:901px){
  body:has(.sidenav),.sidenav{transition:padding-left .2s ease,width .2s ease}
  html.side-mini{--side:76px}
  html.side-mini .sidenav{padding-left:10px;padding-right:10px}
  html.side-mini .sidetop{flex-direction:column;gap:10px}
  html.side-mini .sidenav .logo{padding:4px 0}
  html.side-mini .sidenav .logo-word,html.side-mini .navlabel,html.side-mini .sidenav nav a span,html.side-mini .userbtn .uname,html.side-mini .userbtn > .ic{display:none}
  html.side-mini .sidenav nav a{justify-content:center;padding:11px 0}
  html.side-mini .navgroup{border-top:1px solid var(--line);padding-top:10px}
  html.side-mini .navgroup:first-child{border-top:0;padding-top:0}
  html.side-mini .sidenav nav{gap:10px}
  html.side-mini .userbtn{justify-content:center;padding:6px 0}
  html.side-mini .sideuser .menu-pop{left:0;right:auto;min-width:200px}
}
@media (max-width:900px){.sidetoggle{display:none}}
.rmeta{font-size:13px;color:var(--muted);margin-top:8px}
.ractions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:12px;padding-top:12px;border-top:1px solid var(--line)}
.rcard .pnote{margin-top:4px}
/* account menu must not be cut off when the left menu is collapsed */
@media (min-width:901px){html.side-mini .sideuser .menu-pop{position:fixed;left:calc(var(--side) + 8px);right:auto;top:auto;bottom:16px;min-width:210px;z-index:60}}
/* add several students: one bordered row per student */
.bkwrap{max-height:52vh;overflow:auto;border:1px solid var(--line);border-radius:10px}
table.bk{width:100%;border-collapse:collapse}
table.bk th{position:sticky;top:0;background:var(--subtle);font-size:12.5px;font-weight:600;color:var(--muted);text-align:left;padding:8px 10px;z-index:1}
table.bk td{padding:6px 8px;border-top:1px solid var(--line);vertical-align:middle}
table.bk td:first-child{width:32px;text-align:center}
table.bk td:last-child{width:36px}
table.bk input.in{width:100%;min-height:38px;border:1px solid #c8cbd2;border-radius:8px;padding:6px 10px}
.pwgen{display:flex;gap:4px;align-items:center}
@media (max-width:700px){table.bk th:nth-child(1),table.bk td:nth-child(1){display:none}}
/* account selection */
.selcol{width:40px;text-align:center}
.selcol input{width:17px;height:17px;cursor:pointer;accent-color:var(--brand)}
table.t tr.sel td{background:var(--brand-soft)}
.selbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;background:var(--surface);border:1px solid var(--brand-line);border-radius:10px;padding:8px 12px;position:sticky;top:8px;z-index:5}
/* account selection */
.selcol{width:40px;text-align:center}
.selcol input{width:17px;height:17px;cursor:pointer;accent-color:var(--brand)}
table.t tr.sel td{background:var(--brand-soft)}
.selbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;background:var(--surface);border:1px solid var(--brand-line);border-radius:10px;padding:8px 12px;position:sticky;top:8px;z-index:5}
/* question bank */
.bkfilters{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.bkdiffs{display:flex;align-items:center;gap:6px;flex-wrap:wrap;font-size:14px}
.bkdiffs .muted{margin-right:2px}
.dchip{border:1px solid var(--line);background:var(--surface);border-radius:99px;padding:5px 13px;font-weight:600;font-size:13px;color:var(--muted);cursor:pointer}
.dchip[aria-pressed="true"].Easy{background:var(--teal-soft);color:var(--teal);border-color:transparent}
.dchip[aria-pressed="true"].Medium{background:var(--amber-soft);color:var(--amber);border-color:transparent}
.dchip[aria-pressed="true"].Hard{background:var(--rose-soft);color:var(--rose);border-color:transparent}
select.in.bkstatus{width:auto!important;flex:none;max-width:220px;padding:6px 10px;font-size:14px}
.bkgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:16px}
.bkdom{padding:0;overflow:hidden;display:flex;flex-direction:column}
.bkdomhead{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;border:0;background:none;padding:16px 18px 12px;cursor:pointer;font:inherit;color:inherit}
.bkdomhead b{font-size:16.5px}
.bkdomhead .muted{font-size:13px}
.bkdomhead:disabled{cursor:default}
.bkdomhead:not(:disabled):hover b{color:var(--brand)}
.bkbar{height:4px;background:var(--subtle);margin:0 18px 6px;border-radius:99px;overflow:hidden}
.bkbar i{display:block;height:100%;background:var(--brand);border-radius:99px}
.bkskills{list-style:none;margin:0;padding:4px 8px 10px}
.bkskills button{display:flex;justify-content:space-between;gap:12px;width:100%;border:0;background:none;text-align:left;padding:8px 10px;border-radius:8px;font:inherit;font-size:14px;color:var(--ink);cursor:pointer}
.bkskills button:not(:disabled):hover{background:var(--brand-soft);color:var(--brand)}
.bkskills button:disabled{color:var(--muted);opacity:.6;cursor:default}
.bknav{display:flex;gap:6px;overflow-x:auto;padding:2px 2px 8px}
.bkn{flex:none;min-width:38px;height:36px;border:1px solid var(--line);background:var(--surface);border-radius:8px;font-family:var(--f-num,inherit);font-weight:600;font-size:13.5px;cursor:pointer;position:relative;color:var(--ink)}
.bkn .dd{position:absolute;top:4px;right:4px;width:5px;height:5px;border-radius:50%;background:var(--muted)}
.bkn .dd.Easy{background:var(--teal)} .bkn .dd.Medium{background:var(--amber)} .bkn .dd.Hard{background:var(--rose)}
.bkn.right{background:var(--teal-soft);border-color:var(--teal);color:var(--teal)}
.bkn.wrong{background:var(--rose-soft);border-color:var(--rose);color:var(--rose)}
.bkn.cur{outline:2px solid var(--brand);outline-offset:1px}
.bkcard{display:flex;flex-direction:column;gap:16px}
.bkmeta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:14px}
.bknum{background:var(--ink);color:var(--surface);border-radius:6px;padding:2px 9px;font-family:var(--f-num,inherit)}
.bksplit{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px}
.bkpassage{border-right:1px solid var(--line);padding-right:24px}
.bkfoot{border-top:1px solid var(--line);padding-top:14px;gap:8px}
table.bkadmin tr.bkdrow td{background:var(--subtle)}
@media (max-width:760px){.bksplit{grid-template-columns:1fr}.bkpassage{border-right:0;padding-right:0;border-bottom:1px solid var(--line);padding-bottom:16px}.bkgrid{grid-template-columns:1fr}}
.bkresume{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;border:1px solid var(--brand-line);background:var(--brand-soft);cursor:pointer;font:inherit;color:inherit;text-align:left}
.bkresume b{font-size:17px}
.bkresume .muted{font-size:13.5px}
.bkfull{max-width:none;margin:0;width:100%}
.bksecs{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:18px}
.bksec{display:flex;align-items:center;gap:20px;padding:26px 24px;border:1px solid var(--line);cursor:pointer;font:inherit;color:inherit;text-align:left;transition:border-color .15s,box-shadow .15s}
.bksec:not(:disabled):hover{border-color:var(--brand);box-shadow:0 4px 14px rgba(0,0,0,.06)}
.bksec:disabled{opacity:.6;cursor:default}
.bksec b{font-size:20px}
.bksec .muted{font-size:14px}
.bksecicon{flex:none;width:56px;height:56px;border-radius:14px;display:grid;place-items:center;font-size:24px;font-weight:700;font-family:var(--f-q,serif)}
.bksecicon.rw{background:var(--violet-soft);color:var(--violet)}
.bksecicon.math{background:var(--teal-soft);color:var(--teal)}
.bkbar.flat{margin:6px 0 0}
.bkfull .bkgrid{grid-template-columns:repeat(2,minmax(0,1fr))}
@media (max-width:900px){.bkfull .bkgrid{grid-template-columns:1fr}}
.rvtests{display:flex;flex-direction:column;gap:12px}
.rvtest{display:flex;align-items:center;gap:18px;padding:18px 22px;border:1px solid var(--line);cursor:pointer;font:inherit;color:inherit;text-align:left}
.rvtest:hover{border-color:var(--brand)}
.rvtest b{font-size:17px}
.rvtest .muted{font-size:13.5px}
.rvcount{display:flex;flex-direction:column;align-items:center;line-height:1.1}
.rvcount b{font-family:var(--f-num,inherit);font-size:24px;color:var(--rose)}
.rvcount span{font-size:12px;color:var(--muted)}
.rvgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:18px}
.rvcard{display:flex;flex-direction:column;align-items:flex-start;gap:12px;padding:22px;border:1px solid var(--line);cursor:pointer;font:inherit;color:inherit;text-align:left;transition:border-color .15s,box-shadow .15s}
.rvcard:hover{border-color:var(--brand);box-shadow:0 4px 14px rgba(0,0,0,.06)}
.rvicon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--rose-soft);color:var(--rose)}
.rvicon svg{width:22px;height:22px}
.rvtitle{font-size:17px;line-height:1.3}
.rvbig{font-size:14px;color:var(--muted)}
.rvbig b{font-family:var(--f-num,inherit);font-size:30px;color:var(--rose);margin-right:4px}
.rvsplit{display:flex;flex-direction:column;gap:6px;width:100%;font-size:13.5px;color:var(--muted);border-top:1px solid var(--line);padding-top:12px}
.rvsplit span{display:flex;align-items:center;gap:8px}
.rvsplit b{margin-left:auto;color:var(--ink)}
.rvsplit i{width:8px;height:8px;border-radius:50%}
.rvsplit i.rw{background:var(--violet)} .rvsplit i.math{background:var(--teal)}
.rvbtn{width:100%;justify-content:center;margin-top:4px}
.rvscore{display:flex;flex-direction:column;gap:2px;width:100%}
.rvscore b{font-family:var(--f-num,inherit);font-size:34px;color:var(--brand);line-height:1.1}
.rvscore small{font-size:15px;color:var(--muted);margin-left:3px}
.rvsecs{display:flex;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.rvsecs b{font-size:13px;color:var(--ink);font-family:var(--f-num,inherit)}
.rvbig b{font-size:22px}
/* review mistakes: College Board style */
.cbtabs{display:flex;border-bottom:1px solid var(--line);gap:4px}
.cbtabs button{flex:1;border:0;background:none;padding:12px 10px;font:inherit;font-weight:600;font-size:14px;color:var(--muted);border-bottom:3px solid transparent;cursor:pointer}
.cbtabs button[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--ink)}
.cbtiles{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.cbtiles div{background:var(--brand-soft);border-radius:10px;padding:16px 10px;display:flex;flex-direction:column;align-items:center;gap:4px}
.cbtiles b{font-family:var(--f-num,inherit);font-size:30px;line-height:1}
.cbtiles span{font-size:13px;font-weight:600}
.cbdoms{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:14px}
.cbdoms button{border:1px solid var(--line);background:var(--surface);border-radius:99px;padding:6px 13px;font:inherit;font-size:13.5px;font-weight:600;color:var(--ink);cursor:pointer}
.cbdoms button i{font-style:normal;color:var(--muted);font-weight:500;margin-left:4px}
.cbdoms button[aria-pressed="true"]{background:var(--ink);color:var(--surface);border-color:var(--ink)}
.cbdoms button[aria-pressed="true"] i{color:inherit;opacity:.75}
table.cbtable thead th{background:var(--ink);color:var(--surface)}
.cbmod{display:block;font-size:11.5px;font-family:var(--f-ui)}
.cbbad{color:var(--bad,#b4234a);font-weight:600}
.cbok{color:var(--teal);font-weight:600}
table.cbtable tr.fixed td{opacity:.6}
@media (max-width:700px){.cbtiles{grid-template-columns:repeat(2,1fr)}}
.modfilter{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:14px}
.modfilter:empty{display:none}
.modfilter button{border:1px solid var(--line);background:var(--surface);border-radius:99px;padding:6px 13px;font:inherit;font-size:13.5px;font-weight:600;color:var(--ink);cursor:pointer}
.modfilter button i{font-style:normal;color:var(--muted);font-weight:500;margin-left:4px}
.modfilter button[aria-pressed="true"]{background:var(--ink);color:var(--surface);border-color:var(--ink)}
.modfilter button[aria-pressed="true"] i{color:inherit;opacity:.75}
/* every app page uses the full width */
main.page.wrap{max-width:none;margin:0;width:100%}