/* MDCAT TESTS - shared design system */
:root{
  --bg:#f4f7fb;--surface:#fff;--surface2:#f0f4f9;--text:#14213d;--muted:#64748b;--line:#e2e8f0;
  --brand:#0f766e;--brand2:#14b8a6;--brand-ink:#fff;--accent:#6366f1;
  --bio:#16a34a;--phy:#2563eb;--chem:#ea580c;
  --ok:#16a34a;--ok-bg:#dcfce7;--bad:#dc2626;--bad-bg:#fee2e2;--warn:#d97706;--warn-bg:#fef3c7;
  --shadow:0 1px 2px rgba(15,23,42,.06),0 8px 24px -8px rgba(15,23,42,.12);--radius:16px;
}
[data-theme=dark]{
  --bg:#0b1220;--surface:#131c2e;--surface2:#1a2540;--text:#e8eefb;--muted:#92a0b8;--line:#243252;
  --brand:#2dd4bf;--brand2:#14b8a6;--brand-ink:#04211e;--accent:#818cf8;
  --ok:#4ade80;--ok-bg:#12351f;--bad:#f87171;--bad-bg:#3b1620;--warn:#fbbf24;--warn-bg:#3a2d0a;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px -8px rgba(0,0,0,.5);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;min-height:100vh}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3{line-height:1.2;margin:0}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
.page{padding:20px 16px 70px;animation:fade .35s ease both}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@keyframes pop{0%{transform:scale(1)}40%{transform:scale(1.35)}100%{transform:scale(1)}}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}
@keyframes fill{from{width:0}to{width:100%}}
@keyframes spin{to{transform:rotate(360deg)}}

/* header */
.hdr{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.hdr .wrap{display:flex;align-items:center;gap:10px;height:62px}
.brand{white-space:nowrap;display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.3px;margin-right:auto}
.brand .logo{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--accent));display:grid;place-items:center;color:#fff;box-shadow:var(--shadow)}
.brand small{display:block;font-weight:500;font-size:11px;color:var(--muted);letter-spacing:0;margin-top:-2px}
.nav{display:flex;gap:6px}
.nav a,.nav button{position:relative;display:inline-flex;align-items:center;gap:6px;height:40px;min-width:40px;padding:0 11px;justify-content:center;border-radius:12px;border:1px solid transparent;background:transparent;cursor:pointer;color:var(--muted);transition:.15s}
.nav a:hover,.nav button:hover,.nav a.on{background:var(--surface2);color:var(--text)}
.nav a.on{color:var(--brand)}
.nav span.lbl{font-size:14px;font-weight:600}
.nav .dot{position:absolute;top:2px;right:2px;min-width:18px;height:18px;border-radius:9px;background:var(--bad);color:#fff;font-size:11px;font-weight:700;display:grid;place-items:center;padding:0 4px}
svg.i{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
@media(max-width:760px){.nav span.lbl{display:none}.brand small{display:none}.nav{gap:2px}.nav a,.nav button{padding:0 9px}}
@media(max-width:430px){.brand b{font-size:13px}.brand{gap:7px}.brand .logo{width:32px;height:32px;border-radius:10px}.hdr .wrap{gap:4px;padding:0 10px}.nav{gap:0}.nav a,.nav button{min-width:32px;padding:0 5px}.hero{padding:26px 18px}}

/* hero */
.hero{border-radius:24px;padding:34px 26px;color:#fff;background:radial-gradient(900px 300px at 85% -20%,rgba(255,255,255,.22),transparent),linear-gradient(135deg,#0f766e,#0e7490 45%,#4f46e5);box-shadow:var(--shadow);position:relative;overflow:hidden}
.hero h1{font-size:clamp(28px,6vw,46px);letter-spacing:.5px}
.hero p{margin:6px 0 0;font-size:clamp(15px,2.6vw,19px);opacity:.92}
.hero .pill{display:inline-flex;gap:8px;align-items:center;margin-top:18px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 14px;font-weight:600;font-size:14px}
.hero .pill b{font-size:18px}
.hero::after{content:"";position:absolute;right:-40px;bottom:-60px;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.08)}

/* subject buttons: always one row */
.subjects{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 6px}
.sub{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:16px 6px;border-radius:18px;color:#fff;font-weight:700;font-size:clamp(13px,3.6vw,18px);box-shadow:var(--shadow);transition:transform .15s,filter .15s;min-width:0;text-align:center}
.sub:hover{transform:translateY(-3px);filter:brightness(1.07)}
.sub svg{width:clamp(24px,6vw,32px);height:clamp(24px,6vw,32px)}
.sub small{font-weight:500;opacity:.9;font-size:clamp(10px,2.6vw,13px)}
.s-Biology{background:linear-gradient(135deg,#15803d,#22c55e)}.s-Physics{background:linear-gradient(135deg,#1d4ed8,#38bdf8)}.s-Chemistry{background:linear-gradient(135deg,#c2410c,#fb923c)}
.tag-Biology{--c:var(--bio)}.tag-Physics{--c:var(--phy)}.tag-Chemistry{--c:var(--chem)}.tag-Mixed{--c:var(--accent)}

/* sections / cards */
.sec{margin-top:30px}
.sec-h{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.sec-h h2{font-size:20px}.sec-h .sp{margin-left:auto}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}
.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(290px,1fr))}
.tcard{display:flex;flex-direction:column;gap:10px;position:relative;overflow:hidden;animation:fade .4s both;transition:transform .15s}
.tcard:hover{transform:translateY(-2px)}
.tcard::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--c,var(--brand))}
.tcard h3{font-size:17px;padding-left:6px}
.meta{display:flex;flex-wrap:wrap;gap:6px;padding-left:6px}
.chip{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;background:var(--surface2);color:var(--muted);border:1px solid var(--line)}
.chip.sbj{background:color-mix(in srgb,var(--c) 14%,transparent);color:var(--c);border-color:transparent}
.chip.ok{background:var(--ok-bg);color:var(--ok);border-color:transparent}.chip.bad{background:var(--bad-bg);color:var(--bad);border-color:transparent}.chip.warn{background:var(--warn-bg);color:var(--warn);border-color:transparent}
.tcard .foot{display:flex;align-items:center;gap:8px;padding-left:6px;margin-top:auto}
.tcard .foot .sm{font-size:12.5px;color:var(--muted)}

/* buttons / forms */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;border-radius:12px;padding:10px 18px;font-weight:700;background:var(--surface2);color:var(--text);border:1px solid var(--line);transition:.15s;white-space:nowrap}
.btn:hover{filter:brightness(.97);transform:translateY(-1px)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.btn.pri{background:linear-gradient(135deg,var(--brand),var(--brand2));color:var(--brand-ink);border:0;box-shadow:0 6px 16px -6px var(--brand)}
.btn.dng{background:var(--bad-bg);color:var(--bad);border-color:transparent}
.btn.ok{background:var(--ok);color:#fff;border:0}
.btn.sm{padding:6px 12px;font-size:13px;border-radius:10px}.btn.lg{padding:14px 26px;font-size:17px}
.go{margin-left:auto}
input[type=text],input[type=password],input[type=number],input[type=search],select,textarea{width:100%;background:var(--surface);border:1.5px solid var(--line);border-radius:12px;padding:10px 12px;outline:0;transition:.15s}
input:focus,select:focus,textarea:focus{border-color:var(--brand2);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand2) 25%,transparent)}
textarea{resize:vertical;min-height:70px}
label.f{display:block;font-size:13px;font-weight:700;color:var(--muted);margin-bottom:5px}
.row{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.bar{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.bar>.grow{flex:1;min-width:180px}
.filters{display:grid;grid-template-columns:2fr 1fr 1fr;gap:10px}
@media(max-width:620px){.filters{grid-template-columns:1fr 1fr}.filters .grow{grid-column:1/-1}}
.empty{text-align:center;padding:36px 16px;color:var(--muted)}
.empty svg{width:42px;height:42px;opacity:.5}
.err{background:var(--bad-bg);color:var(--bad);border-radius:12px;padding:12px 14px;font-weight:600}
.err ul{margin:6px 0 0;padding-left:20px;font-weight:500}
.okbox{background:var(--ok-bg);color:var(--ok);border-radius:12px;padding:12px 14px;font-weight:600}
.warnbox{background:var(--warn-bg);color:var(--warn);border-radius:12px;padding:12px 14px;font-weight:600}
.tabs{display:flex;gap:6px;overflow-x:auto;padding-bottom:4px;margin-bottom:16px;scrollbar-width:none}
.tabs button{border:0;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:9px 16px;font-weight:700;cursor:pointer;color:var(--muted);white-space:nowrap}
.tabs button.on{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:middle}
th{font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted)}
.tscroll{overflow-x:auto}
sub,sup{line-height:0}

/* modal + toast */
.modal-bg{position:fixed;inset:0;z-index:100;background:rgba(8,15,30,.55);display:grid;place-items:center;padding:16px;animation:fade .2s both;overflow-y:auto}
.modal{background:var(--surface);border-radius:20px;max-width:560px;width:100%;padding:22px;box-shadow:0 30px 80px rgba(0,0,0,.4);max-height:92vh;overflow-y:auto}
.modal.wide{max-width:760px}.modal h3{margin-bottom:10px;font-size:20px}
.modal .acts{display:flex;gap:10px;justify-content:flex-end;margin-top:18px;flex-wrap:wrap}
#toasts{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);z-index:200;display:flex;flex-direction:column;gap:8px;align-items:center;width:calc(100% - 32px);pointer-events:none}
.toast{background:#0f172a;color:#fff;padding:11px 18px;border-radius:12px;font-weight:600;box-shadow:var(--shadow);animation:fade .25s both;max-width:520px}
.toast.err{background:var(--bad);color:#fff}.toast.ok{background:var(--ok);color:#fff}
.spinner{width:22px;height:22px;border:3px solid var(--line);border-top-color:var(--brand);border-radius:50%;animation:spin .8s linear infinite;margin:30px auto}

/* stat tiles / bars */
.tiles{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.tile{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px;box-shadow:var(--shadow)}
.tile b{display:block;font-size:26px;line-height:1.1}.tile span{font-size:12.5px;color:var(--muted);font-weight:600}
.tile.ok b{color:var(--ok)}.tile.bad b{color:var(--bad)}
.meter{height:10px;border-radius:6px;background:var(--surface2);overflow:hidden}
.meter i{display:block;height:100%;border-radius:6px;background:var(--c,var(--brand));transition:width .8s cubic-bezier(.2,.8,.2,1)}

/* options (test + review) */
.opt{position:relative;display:flex;gap:12px;align-items:center;width:100%;text-align:left;padding:13px 14px;border-radius:14px;border:2px solid var(--line);background:var(--surface);color:var(--text);cursor:pointer;margin-bottom:10px;font-size:16px;line-height:1.45;
  transition:border-color .22s ease,background-color .22s ease,box-shadow .22s ease,transform .18s ease;-webkit-tap-highlight-color:transparent}
.opt>span:nth-child(2){flex:1;min-width:0;overflow-wrap:anywhere}
.opt:hover{border-color:var(--brand2);transform:translateX(3px)}
.opt:active{transform:scale(.992)}
.opt .k{flex:none;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font-weight:800;background:var(--surface2);color:var(--muted);font-size:14px;transition:background-color .22s,color .22s,transform .22s}
/* the option the user tapped: a clean accent border straight away (no dimming, no black flash) */
.opt.sel{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 7%,var(--surface));box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 14%,transparent)}
.opt.sel .k{background:var(--accent);color:#fff}
/* result: border turns green / red, colour never leaves the text */
.opt.right{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 8%,var(--surface));box-shadow:0 0 0 4px color-mix(in srgb,var(--ok) 13%,transparent)}
.opt.right .k{background:var(--ok);color:#fff}
.opt.wrong{border-color:var(--bad);background:color-mix(in srgb,var(--bad) 7%,var(--surface));box-shadow:0 0 0 4px color-mix(in srgb,var(--bad) 13%,transparent);animation:shake .38s}
.opt.wrong .k{background:var(--bad);color:#fff}
.opt .tagr{margin-left:auto;padding-left:8px;font-size:12px;font-weight:800;white-space:nowrap;color:var(--muted);flex:none}
.opt.right .tagr{color:var(--ok)}.opt.wrong .tagr{color:var(--bad)}.opt.sel:not(.right):not(.wrong) .tagr{color:var(--accent)}
.opt.sel:not(.right):not(.wrong) .tagr::before{content:"";display:inline-block;width:10px;height:10px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;margin-right:6px;vertical-align:-1px;animation:spin .7s linear infinite}
.locked .opt{cursor:default;pointer-events:none}
div.opt{cursor:default}div.opt:hover{transform:none;border-color:var(--line)}
div.opt.right:hover{border-color:var(--ok)}div.opt.wrong:hover{border-color:var(--bad)}
.expl{margin-top:14px;padding:13px 15px;border-radius:14px;background:var(--surface2);border-left:5px solid var(--accent);animation:rise .35s ease both}
.expl b{display:block;font-size:12px;letter-spacing:.6px;text-transform:uppercase;color:var(--accent);margin-bottom:3px}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@keyframes slideF{from{opacity:0;transform:translateX(26px)}to{opacity:1;transform:none}}
@keyframes slideB{from{opacity:0;transform:translateX(-26px)}to{opacity:1;transform:none}}
@keyframes grow{from{transform:scaleX(0)}to{transform:scaleX(1)}}

/* test screen */
.tbar{position:sticky;top:62px;z-index:40;background:var(--bg);padding:10px 0 8px}
.tbar .card{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:10px 14px;position:relative;overflow:hidden}
.tbar h2{font-size:16px;min-width:0;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.clock{font:800 22px/1 ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;letter-spacing:1px;background:var(--surface2);padding:8px 12px;border-radius:12px;color:var(--brand)}
.clock.low{color:var(--bad);animation:pulse 1s infinite}
@keyframes pulse{50%{opacity:.55}}
.pbar{position:absolute;left:0;right:0;bottom:0;height:4px;display:flex;background:var(--surface2)}
.pbar i{display:block;height:100%;transition:width .5s cubic-bezier(.2,.8,.2,1)}
.pbar .g{background:var(--ok)}.pbar .r{background:var(--bad)}
.stats{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;margin:4px 0 2px}
.st{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:8px 4px;text-align:center;transition:transform .2s}
.st b{display:block;font-size:18px;font-variant-numeric:tabular-nums}.st span{font-size:11px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.4px}
.st.ok b{color:var(--ok)}.st.bad b{color:var(--bad)}.bump{animation:pop .5s}
@media(max-width:520px){.stats{gap:5px}.st b{font-size:16px}.st span{font-size:9.5px}.tbar .card{padding:9px 11px}.tbar .chip.sbj{display:none}.clock{font-size:18px;padding:6px 9px}}
.tlayout{display:grid;gap:16px;grid-template-columns:1fr 300px;align-items:start;margin-top:10px}
@media(max-width:860px){.tlayout{grid-template-columns:1fr}.navp{order:2}}
.navp{position:sticky;top:132px}
@media(max-width:860px){.navp{position:static}}
.qcard{padding:18px 18px 0;overflow:clip}
.qwrap.fwd{animation:slideF .3s cubic-bezier(.2,.8,.2,1) both}.qwrap.back{animation:slideB .3s cubic-bezier(.2,.8,.2,1) both}.qwrap.fresh{animation:rise .3s ease both}
.qtext{font-size:clamp(17px,2.8vw,21px);font-weight:600;margin:8px 0 18px;line-height:1.5}
.qhead{display:flex;align-items:center;gap:8px;color:var(--muted);font-weight:700;font-size:14px;flex-wrap:wrap}
.qhead .sp{margin-left:auto}
.mark{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:5px 10px;cursor:pointer;font-weight:700;font-size:13px;color:var(--muted);white-space:nowrap;transition:.2s}
.mark:hover{border-color:var(--warn);color:var(--warn)}
.mark.on{background:var(--warn-bg);color:var(--warn);border-color:transparent}
.mark.on svg{fill:currentColor;animation:pop .4s}
@media(max-width:520px){.mark{padding:5px 8px;font-size:12px}}
.feedback{overflow:hidden}
.autobar{height:4px;border-radius:2px;background:var(--ok);margin-top:12px;transform-origin:left;animation:grow 2.5s linear forwards}
.qnav{display:flex;gap:10px;margin:18px -18px 0;padding:12px 18px;align-items:center;position:sticky;bottom:0;background:color-mix(in srgb,var(--surface) 94%,transparent);backdrop-filter:blur(8px);border-top:1px solid var(--line)}
.qnav .sp{flex:1}
.kbd{display:none;font-size:12px;color:var(--muted)}
@media(min-width:861px){.kbd{display:inline}}
.kbd kbd{font:700 11px ui-monospace,Menlo,monospace;background:var(--surface2);border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;padding:1px 6px}
.navgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(40px,1fr));gap:7px}
.qn{position:relative;height:40px;border-radius:10px;border:2px solid var(--line);background:var(--surface);font-weight:700;cursor:pointer;transition:transform .15s,border-color .2s,background-color .2s,opacity .2s}
.qn:hover{border-color:var(--brand2);transform:translateY(-1px)}
.qn.right{background:var(--ok);border-color:var(--ok);color:#fff}.qn.wrong{background:var(--bad);border-color:var(--bad);color:#fff}
.qn.cur{outline:3px solid var(--accent);outline-offset:1px}
.qn.dim{opacity:.25}
.qn.flag::after{content:"";position:absolute;top:-5px;right:-5px;width:13px;height:13px;border-radius:50%;background:var(--warn);border:2px solid var(--surface)}
.nfilters{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0 12px}
.nfilters button{border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:4px 11px;font-size:12.5px;font-weight:700;color:var(--muted);cursor:pointer;transition:.15s}
.nfilters button.on{background:var(--text);color:var(--bg);border-color:var(--text)}
.mlist{margin-top:14px;border-top:1px dashed var(--line);padding-top:12px}
.mlist h4{margin:0 0 8px;font-size:12px;letter-spacing:.6px;text-transform:uppercase;color:var(--warn);display:flex;align-items:center;gap:6px}
.mitem{display:flex;gap:8px;align-items:center;width:100%;border:0;background:var(--warn-bg);color:var(--text);border-radius:10px;padding:7px 10px;margin-bottom:6px;cursor:pointer;text-align:left;font-size:13px;transition:.15s}
.mitem:hover{transform:translateX(3px)}
.mitem b{color:var(--warn);flex:none}.mitem span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.legend{display:flex;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-top:12px}
.legend i{display:inline-block;width:11px;height:11px;border-radius:3px;margin-right:4px;vertical-align:-1px}

/* result ring */
.ring{--p:0;width:130px;height:130px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--ok) calc(var(--p)*1%),var(--surface2) 0);flex:none}
.ring div{width:100px;height:100px;border-radius:50%;background:var(--surface);display:grid;place-items:center;font-size:26px;font-weight:800}
.rhead{display:flex;gap:22px;align-items:center;flex-wrap:wrap}
.rq{margin-bottom:16px;scroll-margin-top:80px}
.rq .qtext{font-size:17px}
.stat-lines{display:flex;gap:6px;flex-wrap:wrap}

/* editor */
.qed{border:1px solid var(--line);border-radius:16px;background:var(--surface);padding:14px;margin-bottom:14px;box-shadow:var(--shadow)}
.qed.bad{border-color:var(--bad)}
.qed .top{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.qed .top b{font-size:15px}.qed .top .sp{margin-left:auto}
.oedit{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.oedit input[type=radio]{width:22px;height:22px;accent-color:var(--ok);flex:none}
.oedit .k{flex:none;font-weight:800;color:var(--muted);width:20px}
.iconbtn{border:1px solid var(--line);background:var(--surface2);border-radius:9px;width:32px;height:32px;cursor:pointer;display:grid;place-items:center;padding:0;color:var(--muted)}
.iconbtn:hover{color:var(--text)}
.sticky-act{position:sticky;bottom:0;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(8px);padding:12px 0;border-top:1px solid var(--line);display:flex;gap:10px;flex-wrap:wrap;z-index:30;margin-top:10px}
.drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;text-align:center;cursor:pointer;padding:40px 20px;border:2px dashed color-mix(in srgb,var(--brand) 45%,var(--line));border-radius:22px;background:linear-gradient(180deg,color-mix(in srgb,var(--brand) 5%,var(--surface)),var(--surface));transition:border-color .2s,background-color .2s,transform .2s,box-shadow .2s;position:relative}
.drop:hover,.drop.over{border-color:var(--brand);box-shadow:0 0 0 5px color-mix(in srgb,var(--brand) 12%,transparent);transform:translateY(-2px)}
.drop.over{background:color-mix(in srgb,var(--brand) 10%,var(--surface))}
.drop .ico{width:68px;height:68px;border-radius:50%;display:grid;place-items:center;margin-bottom:6px;color:#fff;background:linear-gradient(135deg,var(--brand),var(--accent));box-shadow:0 10px 24px -8px var(--brand)}
.drop .ico svg{width:30px;height:30px;stroke-width:2.2;animation:bob 2.4s ease-in-out infinite}
@keyframes bob{50%{transform:translateY(-4px)}}
.drop h3{font-size:19px;margin:0}.drop p{margin:0;color:var(--muted);font-size:14.5px}
.drop .btn{margin-top:10px;pointer-events:none}
.steps{display:flex;align-items:center;gap:8px;margin:2px 0 18px;flex-wrap:wrap}
.steps .s{display:flex;align-items:center;gap:8px;font-weight:700;font-size:14px;color:var(--muted)}
.steps .s b{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-size:13px;background:var(--surface2);border:1px solid var(--line)}
.steps .s.on{color:var(--text)}.steps .s.on b{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
.steps .ln{flex:0 1 34px;height:2px;background:var(--line);border-radius:2px}
.seg{display:inline-flex;background:var(--surface2);border:1px solid var(--line);border-radius:12px;padding:4px;gap:4px;margin:0 0 14px}
.seg button{border:0;background:transparent;border-radius:9px;padding:7px 14px;font-weight:700;color:var(--muted);cursor:pointer;transition:.15s}
.seg button.on{background:var(--surface);color:var(--text);box-shadow:var(--shadow)}
.helpline{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.helpline .btn{font-size:14px}
.crumbs{display:flex;gap:6px;align-items:center;color:var(--muted);font-size:14px;font-weight:600;margin-bottom:14px;flex-wrap:wrap}
.crumbs a:hover{color:var(--brand)}
.chap{border:1px solid var(--line);border-radius:16px;background:var(--surface);margin-bottom:12px;box-shadow:var(--shadow);overflow:hidden}
.chap>button{display:flex;align-items:center;gap:10px;width:100%;border:0;background:transparent;padding:15px 16px;cursor:pointer;text-align:left;font-weight:700;font-size:16px}
.chap>button .n{margin-left:auto;display:flex;gap:6px}
.chap .body{padding:0 14px 14px;display:none}.chap.open .body{display:block}
.chap.open>button svg.chev{transform:rotate(90deg)}svg.chev{transition:.2s}
.chap h4{margin:12px 0 8px;font-size:13px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted)}
.mrow{display:flex;gap:10px;align-items:center;padding:11px 4px;border-bottom:1px solid var(--line);cursor:pointer}
.mrow:hover{background:var(--surface2)}.mrow .t{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.login{max-width:420px;margin:9vh auto 0}
.login .logo{width:64px;height:64px;margin:0 auto 12px;border-radius:20px;background:linear-gradient(135deg,var(--brand),var(--accent));display:grid;place-items:center;color:#fff}
.chart{width:100%;height:auto;max-height:240px}.bar .sp{margin-left:auto}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
[hidden]{display:none!important}
.mark{white-space:nowrap}.qhead{flex-wrap:wrap}@media(max-width:520px){.mark{padding:5px 8px;font-size:12px}}

/* =====================================================================
   v2 design refresh
   ===================================================================== */
body{background:var(--bg) radial-gradient(1000px 420px at 85% -120px,color-mix(in srgb,var(--brand2) 11%,transparent),transparent) no-repeat;background-attachment:scroll}
:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 55%,transparent);outline-offset:2px;border-radius:8px}
.btn:active{transform:translateY(0) scale(.98)}
.card{transition:box-shadow .2s,border-color .2s}
.sec-h h2{font-size:21px;letter-spacing:-.2px}
.sec-h .count{font-size:13px;font-weight:700;color:var(--muted);background:var(--surface2);border:1px solid var(--line);border-radius:999px;padding:2px 10px}
.hdr .wrap{height:64px}
.nav a.on::after{content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:3px;border-radius:3px;background:var(--brand)}
.nav .dot.w{background:var(--warn)}
@media(max-width:760px){.hwa{display:none!important}}

/* hero */
.hero{padding:34px 28px 28px}
.hero .hrow{position:relative;z-index:1;display:flex;gap:20px;align-items:flex-end;justify-content:space-between;flex-wrap:wrap}
.hero .eyebrow{display:inline-block;font-size:12px;font-weight:800;letter-spacing:1.4px;text-transform:uppercase;opacity:.8;margin-bottom:8px}
.hstats{position:relative;z-index:1;display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.hstat{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);border-radius:16px;padding:9px 16px;min-width:96px;backdrop-filter:blur(4px);color:#fff;transition:transform .2s,background .2s}
a.hstat:hover{transform:translateY(-3px);background:rgba(255,255,255,.22)}
.hstat b{display:block;font-size:24px;line-height:1.1;font-variant-numeric:tabular-nums}.hstat span{font-size:12px;font-weight:600;opacity:.9}
.hero::before{content:"";position:absolute;left:-60px;top:-80px;width:240px;height:240px;border-radius:50%;background:rgba(255,255,255,.07)}
@media(max-width:430px){.hstat{flex:1;min-width:0;padding:8px 10px}.hstat b{font-size:20px}}

/* subject tiles */
.subjects{gap:12px;margin:16px 0 4px}
.sub{position:relative;overflow:hidden;padding:18px 8px 16px;border-radius:20px;isolation:isolate}
.sub::after{content:"";position:absolute;right:-26px;top:-26px;width:90px;height:90px;border-radius:50%;background:rgba(255,255,255,.14);z-index:-1;transition:transform .3s}
.sub:hover::after{transform:scale(1.5)}
.sub .bub{width:clamp(42px,10vw,54px);height:clamp(42px,10vw,54px);border-radius:16px;background:rgba(255,255,255,.2);display:grid;place-items:center;margin-bottom:4px}
.sub .bub svg{width:62%;height:62%}

/* quick actions */
.quick{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px;margin-top:14px}
.qa{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:16px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);transition:transform .18s,border-color .2s}
.qa:hover{transform:translateY(-2px);border-color:var(--c,var(--brand2))}
.qa .qi{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;flex:none;background:color-mix(in srgb,var(--c,var(--brand)) 14%,transparent);color:var(--c,var(--brand))}
.qa b{display:block;font-size:20px;line-height:1.1}.qa span{font-size:12.5px;color:var(--muted);font-weight:600}
.qa.bad{--c:var(--bad)}.qa.warn{--c:var(--warn)}.qa.acc{--c:var(--accent)}

/* test cards */
.tcard{padding:16px 16px 14px}
.tcard .th{display:flex;gap:10px;align-items:flex-start;padding-left:6px}
.tcard .th h3{padding:0;flex:1;min-width:0}
.tic{flex:none;width:34px;height:34px;border-radius:11px;display:grid;place-items:center;background:color-mix(in srgb,var(--c,var(--brand)) 14%,transparent);color:var(--c,var(--brand))}
.tic svg{width:18px;height:18px}
.tcard:hover{transform:translateY(-3px);box-shadow:0 2px 4px rgba(15,23,42,.06),0 16px 32px -12px rgba(15,23,42,.22)}

/* floating WhatsApp */
.fab-wa{position:fixed;right:18px;bottom:20px;z-index:60;width:58px;height:58px;border-radius:50%;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,#25d366,#128c7e);box-shadow:0 10px 24px -6px rgba(18,140,126,.7);transition:transform .2s}
.fab-wa:hover{transform:scale(1.09) rotate(-4deg)}.fab-wa:active{transform:scale(.95)}
.fab-wa svg{width:30px;height:30px;stroke-width:1.9}
.fab-wa::before{content:"";position:absolute;inset:0;border-radius:50%;background:#25d366;opacity:.45;animation:ring 2.4s ease-out infinite;z-index:-1}
@keyframes ring{to{transform:scale(1.7);opacity:0}}
.fab-wa .tip{position:absolute;right:68px;white-space:nowrap;background:var(--text);color:var(--bg);font-size:13px;font-weight:700;padding:6px 11px;border-radius:10px;opacity:0;transform:translateX(6px);pointer-events:none;transition:.2s}
.fab-wa:hover .tip{opacity:1;transform:none}
@media(max-width:520px){.fab-wa{right:14px;bottom:16px;width:54px;height:54px}.fab-wa .tip{display:none}}

/* tabs / chapters polish */
.tabs button{transition:.15s}.tabs button:hover:not(.on){color:var(--text);border-color:var(--brand2)}
.chap{transition:box-shadow .2s}.chap>button:hover{background:var(--surface2)}
.chap .body{animation:rise .25s ease both}
.mrow{border-radius:10px;transition:background .15s}
.login.card{padding:28px 24px;box-shadow:0 30px 70px -30px rgba(15,118,110,.5)}

/* ----- marked page ----- */
.mq{margin-bottom:14px;position:relative;animation:fade .35s both;padding:16px 16px 14px}
.mq::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;border-radius:16px 0 0 16px;background:var(--warn)}
.mq .qtext{font-size:17px;margin:10px 0 14px}
.mq .acts{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.mq .opt{padding:10px 12px;font-size:15px;margin-bottom:8px}
.mq.out{animation:fadeOut .3s ease both}
@keyframes fadeOut{to{opacity:0;transform:translateX(30px) scale(.97);height:0;margin:0;padding:0}}
.hide-ans .opt{pointer-events:none}
.pill-tabs{display:flex;gap:6px;flex-wrap:wrap}
.pill-tabs button{border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:6px 14px;font-weight:700;font-size:13.5px;color:var(--muted);cursor:pointer;transition:.15s}
.pill-tabs button.on{background:var(--text);color:var(--bg);border-color:var(--text)}
.pill-tabs button i{font-style:normal;opacity:.7;margin-left:4px}

/* ----- analysis (result + dashboard) ----- */
.stack{display:flex;height:16px;border-radius:9px;overflow:hidden;background:var(--surface2)}
.stack i{display:block;height:100%;transform-origin:left;animation:grow .9s cubic-bezier(.2,.8,.2,1) both}
.stack .g{background:var(--ok)}.stack .r{background:var(--bad)}.stack .u{background:var(--line)}
.lg2{display:flex;gap:14px;flex-wrap:wrap;margin-top:10px;font-size:13px;color:var(--muted);font-weight:600}
.lg2 i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px}
.lg2 b{color:var(--text)}
.ring{width:140px;height:140px;position:relative;transition:--p 1s}
.ring div{width:108px;height:108px;flex-direction:column;line-height:1}
.ring div small{display:block;font-size:11px;font-weight:700;color:var(--muted);margin-top:4px;letter-spacing:.5px;text-transform:uppercase}
.verdict{font-size:15px;color:var(--muted);margin:6px 0 0}
.delta{font-size:12px;font-weight:800;padding:2px 8px;border-radius:999px}
.delta.up{background:var(--ok-bg);color:var(--ok)}.delta.dn{background:var(--bad-bg);color:var(--bad)}.delta.eq{background:var(--surface2);color:var(--muted)}
.two{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));margin-top:14px}
.qmap{display:grid;grid-template-columns:repeat(auto-fill,minmax(34px,1fr));gap:6px}
.qmap a{position:relative;height:34px;border-radius:9px;display:grid;place-items:center;font-size:13px;font-weight:800;border:2px solid var(--line);background:var(--surface);color:var(--muted);transition:transform .15s}
.qmap a:hover{transform:translateY(-2px) scale(1.06)}
.qmap a.ok{background:var(--ok);border-color:var(--ok);color:#fff}.qmap a.bad{background:var(--bad);border-color:var(--bad);color:#fff}
.qmap a.fl::after{content:"";position:absolute;top:-4px;right:-4px;width:11px;height:11px;border-radius:50%;background:var(--warn);border:2px solid var(--surface)}
.crow{display:grid;grid-template-columns:minmax(90px,1.2fr) 3fr 64px;gap:10px;align-items:center;padding:7px 0;font-size:14px}
.crow .nm{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
.crow .meter{height:12px}.crow .pc{text-align:right;font-weight:800;font-variant-numeric:tabular-nums}
.rq{transition:opacity .2s}
.rq .qhead .mk{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:4px 9px;cursor:pointer;font-weight:700;font-size:12.5px;color:var(--muted);display:inline-flex;gap:5px;align-items:center;transition:.2s}
.rq .qhead .mk.on{background:var(--warn-bg);color:var(--warn);border-color:transparent}.rq .qhead .mk.on svg{fill:currentColor}
.rq .qhead .mk svg{width:15px;height:15px}
.rq.flash{animation:flashc 1.2s ease}
@keyframes flashc{0%,100%{box-shadow:var(--shadow)}30%{box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 40%,transparent)}}

.dhero{display:grid;grid-template-columns:auto 1fr;gap:22px;align-items:center;padding:22px;background:linear-gradient(135deg,color-mix(in srgb,var(--brand) 10%,var(--surface)),var(--surface))}
@media(max-width:560px){.dhero{grid-template-columns:1fr;justify-items:center;text-align:center}}
.insights{display:grid;gap:8px;margin-top:12px}
.ins{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;line-height:1.45}
.ins .d{flex:none;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;background:var(--surface2);font-size:14px}
.ins.good .d{background:var(--ok-bg)}.ins.warn .d{background:var(--warn-bg)}.ins.bad .d{background:var(--bad-bg)}
.scards{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.scard{display:flex;gap:14px;align-items:center;padding:16px}
.mini{--p:0;width:74px;height:74px;border-radius:50%;flex:none;display:grid;place-items:center;background:conic-gradient(var(--c) calc(var(--p)*1%),var(--surface2) 0)}
.mini div{width:56px;height:56px;border-radius:50%;background:var(--surface);display:grid;place-items:center;font-weight:800;font-size:15px}
.scard b.n{font-size:17px;display:flex;align-items:center;gap:6px;color:var(--c)}.scard small{display:block;color:var(--muted);font-weight:600;font-size:13px}
.chartbox svg{width:100%;height:auto;display:block;overflow:visible}
.chartbox text{fill:var(--muted);font-size:11px;font-weight:600}
.heat{display:grid;grid-template-columns:repeat(14,1fr);gap:5px}
.heat span{aspect-ratio:1;border-radius:6px;background:var(--surface2);position:relative}
.heat span[data-l="1"]{background:color-mix(in srgb,var(--brand) 25%,var(--surface2))}.heat span[data-l="2"]{background:color-mix(in srgb,var(--brand) 50%,var(--surface2))}
.heat span[data-l="3"]{background:color-mix(in srgb,var(--brand) 75%,var(--surface2))}.heat span[data-l="4"]{background:var(--brand)}
.heat span.today{outline:2px solid var(--accent);outline-offset:1px}
.tbl-acc{display:flex;align-items:center;gap:8px;min-width:130px}.tbl-acc .meter{flex:1;height:8px}
@property --p{syntax:'<number>';inherits:false;initial-value:0}
.mini{transition:--p 1s cubic-bezier(.2,.8,.2,1)}
.autorow{display:flex;gap:10px;align-items:center;margin-top:12px}.autorow .autobar{flex:1;margin:0}
.autorow .btn{padding:3px 11px;font-size:12px;border-radius:9px}
.qcard{scroll-margin-top:150px}
.fbchips{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.sw{display:inline-block;width:14px;height:14px;border-radius:4px;background:var(--surface2)}
.sw[data-l="1"]{background:color-mix(in srgb,var(--brand) 25%,var(--surface2))}.sw[data-l="2"]{background:color-mix(in srgb,var(--brand) 50%,var(--surface2))}
.sw[data-l="3"]{background:color-mix(in srgb,var(--brand) 75%,var(--surface2))}.sw[data-l="4"]{background:var(--brand)}
.tlayout{grid-template-columns:minmax(0,1fr) 300px}.tlayout>*{min-width:0}
@media(max-width:860px){.tlayout{grid-template-columns:minmax(0,1fr)}}
html,body{overflow-x:clip}
.opt .tagr{max-width:46%;overflow:hidden;text-overflow:ellipsis}
@media(max-width:430px){.opt{padding:11px 11px;gap:10px;font-size:15.5px}.opt .tagr{font-size:11px}.qcard{padding:14px 14px 0}.qnav{margin:16px -14px 0;padding:10px 14px}}
.nav .dot{top:-2px;right:-3px;border:2px solid var(--surface)}

/* =====================================================================
   v3: selectors, no arrows, test bar, editor colours, dashboard panel
   ===================================================================== */
:root{--display:"Segoe UI Variable Display","Avenir Next","SF Pro Display","Trebuchet MS",system-ui,sans-serif;
  --oa:#2563eb;--ob:#7c3aed;--oc:#d97706;--od:#db2777}
[data-theme=dark]{--oa:#60a5fa;--ob:#a78bfa;--oc:#fbbf24;--od:#f472b6}
h1,h2,h3,.tile b,.hstat b,.qa b,.clock{font-family:var(--display);letter-spacing:-.2px}
h2{font-weight:800}

/* selectors become coloured pill groups (select stays in the DOM, hidden) */
select.enh{display:none!important}
.segsel{display:flex;flex-wrap:wrap;gap:7px;align-items:center}
.segsel button{--c:var(--brand);border:1.5px solid color-mix(in srgb,var(--c) 35%,var(--line));background:color-mix(in srgb,var(--c) 7%,var(--surface));color:var(--c);
  border-radius:999px;padding:7px 15px;font-weight:700;font-size:14px;cursor:pointer;line-height:1.2;transition:transform .15s,background-color .2s,color .2s,box-shadow .2s,border-color .2s}
.segsel button:hover{transform:translateY(-2px);border-color:var(--c)}
.segsel button:active{transform:scale(.96)}
.segsel button.on{background:linear-gradient(135deg,var(--c),color-mix(in srgb,var(--c) 70%,#000));color:#fff;border-color:transparent;box-shadow:0 6px 14px -6px var(--c)}
.segsel button.v-published{--c:var(--ok)}.segsel button.v-draft{--c:var(--warn)}.segsel button.v-worksheet{--c:var(--accent)}
.segsel button.v-all{--c:var(--muted)}
.segsel button.tag-Biology{--c:var(--bio)}.segsel button.tag-Physics{--c:var(--phy)}.segsel button.tag-Chemistry{--c:var(--chem)}
.filters{display:flex;flex-wrap:wrap;gap:12px 14px;align-items:center}
.filters .grow{flex:1 1 100%}
label.f{font-family:var(--display);text-transform:uppercase;letter-spacing:.7px;font-size:11.5px}

/* no arrows: separators, accordions, details */
.crumbs .sep{font-style:normal;opacity:.45;font-weight:400}
svg.chev{width:18px;height:18px;padding:3px;box-sizing:content-box;border-radius:50%;background:var(--surface2);color:var(--muted)}
.chap.open>button svg.chev{transform:rotate(45deg);background:var(--brand);color:var(--brand-ink)}
details>summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:10px;font-weight:700}
details>summary::-webkit-details-marker{display:none}
details>summary::before{content:"+";display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--surface2);border:1px solid var(--line);font-weight:800;color:var(--brand);transition:transform .2s,background .2s}
details[open]>summary::before{transform:rotate(45deg);background:var(--brand);color:var(--brand-ink)}

/* seg switch (upload / paste) */
.seg{padding:5px;gap:5px;border-radius:16px;background:var(--surface2)}
.seg button{display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border-radius:12px;font-size:14.5px}
.seg button svg{width:17px;height:17px}
.seg button.on{background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;box-shadow:0 8px 16px -8px var(--brand)}

/* tabs in admin: each its own colour */
.tabs{gap:8px}
.tabs button{--tc:var(--brand);display:inline-flex;align-items:center;gap:8px;border-radius:14px;padding:10px 16px;border:1.5px solid color-mix(in srgb,var(--tc) 30%,var(--line));color:var(--tc);background:color-mix(in srgb,var(--tc) 6%,var(--surface))}
.tabs button svg{width:17px;height:17px}
.tabs button.on{background:linear-gradient(135deg,var(--tc),color-mix(in srgb,var(--tc) 70%,#000));color:#fff;border-color:transparent;box-shadow:0 8px 16px -8px var(--tc)}

/* test screen v3 */
.stats{grid-template-columns:repeat(3,1fr);gap:10px}
.st{padding:10px 6px;border-top:4px solid var(--line)}
.st b{font-size:24px;font-family:var(--display)}
.st.tot{border-top-color:var(--accent)}.st.ok{border-top-color:var(--ok)}.st.bad{border-top-color:var(--bad)}
.st.tot span em{font-style:normal;color:var(--accent);margin-left:2px;padding:1px 8px;border-radius:999px;background:color-mix(in srgb,var(--accent) 14%,transparent)}
.prog{flex:1 1 100%;display:flex;align-items:center;gap:12px;margin-top:2px}
.prog #plab{font-size:12.5px;font-weight:700;color:var(--muted);white-space:nowrap}
.ptrack{flex:1;height:14px;border-radius:9px;background:var(--surface2);border:1px solid var(--line);overflow:hidden;display:flex}
.ptrack i{display:block;height:100%;transition:width .5s cubic-bezier(.2,.8,.2,1)}
.ptrack .g{background:linear-gradient(90deg,var(--ok),color-mix(in srgb,var(--ok) 70%,#fff))}
.ptrack .r{background:linear-gradient(90deg,var(--bad),color-mix(in srgb,var(--bad) 75%,#fff))}
.prog #ppct{font:800 14px var(--display);min-width:38px;text-align:right}
.qno{display:inline-block;color:var(--brand);font-weight:800;margin-right:8px;font-family:var(--display)}
.nav-pager{display:flex;align-items:center;justify-content:space-between;gap:8px;margin:12px 0 0}
.nav-pager span{font-size:12.5px;font-weight:700;color:var(--muted)}
.nav-pager button{border:1.5px solid var(--line);background:var(--surface);border-radius:10px;padding:5px 14px;font-weight:700;font-size:13px;cursor:pointer;transition:.15s}
.nav-pager button:hover:not(:disabled){border-color:var(--brand2);color:var(--brand)}.nav-pager button:disabled{opacity:.4;cursor:default}
.mlist .mwrap{max-height:190px;overflow:auto;padding-right:2px}
.autobar{animation-duration:1s}

/* editor: coloured options so A/B/C/D never blur together */
.qed{border-left:5px solid var(--accent);padding:16px}
.qed .top b{display:inline-flex;align-items:center;gap:8px;font-size:15px}
.qed .top b i{font-style:normal;background:var(--accent);color:#fff;border-radius:9px;padding:2px 10px;font-size:13px}
.qed .lab{display:block;font:800 11px var(--display);text-transform:uppercase;letter-spacing:.8px;color:var(--muted);margin:12px 0 6px}
.qed textarea[data-f=text]{background:color-mix(in srgb,var(--accent) 5%,var(--surface));border-color:color-mix(in srgb,var(--accent) 30%,var(--line));font-weight:600}
.qed textarea[data-f=expl]{background:color-mix(in srgb,var(--warn) 7%,var(--surface));border-color:color-mix(in srgb,var(--warn) 35%,var(--line))}
.oedit{display:flex;align-items:center;gap:10px;padding:6px 8px 6px 6px;margin-bottom:9px;border-radius:14px;border:2px solid var(--line);background:var(--surface);transition:border-color .2s,background-color .2s}
.oedit .k{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:var(--surface2);color:var(--muted);font-weight:800;flex:none;transition:.2s}
.oedit input[type=text]{border:0;background:transparent;box-shadow:none!important;padding:8px 6px;font-weight:600}
.oedit .cor{flex:none;cursor:pointer;position:relative}
.oedit .cor input{position:absolute;opacity:0;inset:0;width:100%;height:100%;margin:0;cursor:pointer}
.oedit .cor span{display:inline-flex;align-items:center;gap:6px;border-radius:999px;border:1.5px dashed var(--line);padding:6px 12px;font-size:12.5px;font-weight:800;color:var(--muted);background:var(--surface);transition:.2s;white-space:nowrap}
.oedit .cor input:checked+span{background:var(--ok);border:1.5px solid var(--ok);color:#fff;box-shadow:0 6px 14px -6px var(--ok)}
.oedit .cor input:focus-visible+span{outline:3px solid color-mix(in srgb,var(--accent) 55%,transparent)}
.oedit:has(input:checked){border-color:var(--ok);background:color-mix(in srgb,var(--ok) 10%,var(--surface))}
.oedit:has(input:checked) .k{background:var(--ok);color:#fff}
.iconbtn.txt{width:auto;padding:0 10px;font-size:12px;font-weight:800}

/* settings / admin cards */
.setcard{position:relative;overflow:hidden;margin-top:14px;padding:18px 18px 18px 74px}
.setcard::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--c,var(--brand))}
.setcard .sic{position:absolute;left:18px;top:18px;width:44px;height:44px;border-radius:14px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--c,var(--brand)),color-mix(in srgb,var(--c,var(--brand)) 65%,#000))}
.setcard h3{font-size:18px;margin-bottom:4px}.setcard p.d{color:var(--muted);font-size:14px;margin:0 0 12px}
.setcard.wa{--c:#16a34a}.setcard.pw{--c:var(--accent)}.setcard.danger{--c:var(--bad);background:color-mix(in srgb,var(--bad) 5%,var(--surface))}.setcard.out{--c:var(--muted)}
@media(max-width:520px){.setcard{padding:70px 16px 16px}.setcard .sic{top:16px}}

/* dashboard panel */
.dpanel{border-radius:24px;padding:24px;color:#fff;background:radial-gradient(700px 260px at 90% -10%,rgba(255,255,255,.2),transparent),linear-gradient(135deg,#0f766e,#0e7490 50%,#4f46e5);box-shadow:var(--shadow)}
.dpanel .top{display:flex;gap:22px;align-items:center;flex-wrap:wrap}
.dpanel .ring{background:conic-gradient(#fff calc(var(--p)*1%),rgba(255,255,255,.2) 0)}
.dpanel .ring div{background:#0d5f68;color:#fff}.dpanel .ring div small{color:rgba(255,255,255,.8)}
.dpanel h2{font-size:clamp(24px,4vw,32px);font-weight:800;letter-spacing:-.4px}
.dpanel .sub2{margin:4px 0 0;font-size:15px;opacity:.9}
.icards{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));margin-top:20px}
.icard{--c:var(--accent);background:var(--surface);color:var(--text);border-radius:18px;padding:14px 16px;position:relative;overflow:hidden;box-shadow:0 10px 24px -14px rgba(0,0,0,.5);animation:rise .4s both}
.icard::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--c)}
.icard.good{--c:var(--ok)}.icard.warn{--c:var(--warn)}.icard.bad{--c:var(--bad)}
.icard .l{display:flex;align-items:center;gap:7px;font:800 11px var(--display);text-transform:uppercase;letter-spacing:.9px;color:var(--muted)}
.icard .v{font:800 22px/1.15 var(--display);margin:6px 0 2px;color:var(--c);overflow-wrap:anywhere}
.icard .s{font-size:13.5px;color:var(--muted);font-weight:600}
.tile{border-top:4px solid var(--c,var(--accent))}.tile.ok{--c:var(--ok)}.tile.bad{--c:var(--bad)}
.tile b{font-size:30px;font-weight:800}.tile span{font-size:12px;text-transform:uppercase;letter-spacing:.6px;font-weight:700}
.sec-h h2{display:flex;align-items:center;gap:10px}
.sec-h h2::before{content:"";width:6px;height:22px;border-radius:4px;background:linear-gradient(180deg,var(--brand2),var(--accent))}
.sec-h.nobar h2::before{display:none}

/* ===== multi-user additions ===== */
.pwbox{position:relative}.pwbox input{padding-right:46px}
.pwbox .eye{position:absolute;right:4px;top:50%;transform:translateY(-50%);width:38px;height:38px;border:0;background:transparent;border-radius:10px;cursor:pointer;color:var(--muted);display:grid;place-items:center}
.pwbox .eye:hover{color:var(--brand);background:var(--surface2)}.pwbox .eye svg{width:20px;height:20px}
.pbx{display:flex;gap:4px}
.pbx input[type=text]{flex:1 1 0;min-width:0;width:100%;padding:11px 0;text-align:center;font-weight:700;font-size:17px;border-radius:10px}
.pbx input:nth-child(4){margin-right:7px}
.pbx input.fx{background:var(--surface2);color:var(--muted);cursor:default;border-style:dashed}
.pbox.good .pbx input:not(.fx){border-color:var(--ok)}.pbox.bad .pbx input:not(.fx){border-color:var(--bad)}
.pbox.shake .pbx{animation:shake .35s}
.phint{min-height:20px;font-size:13px;font-weight:600;margin-top:5px;color:var(--muted)}.pbox.good .phint{color:var(--ok)}.pbox.bad .phint{color:var(--bad)}
.mathrow{display:flex;gap:8px;align-items:center}.mathrow .mq{flex:none;min-width:110px;text-align:center;font-size:20px;padding:8px 12px;border-radius:12px;background:var(--surface2);border:1.5px dashed var(--line);letter-spacing:1px}
.mathrow input{flex:1;min-width:0}
.swl{text-align:center;margin:14px 0 0;color:var(--muted)}.swl a{color:var(--brand);font-weight:700}
.priv{text-align:center;font-size:12.5px;color:var(--muted);margin:8px 0 0}
.setcard.prof{--c:var(--brand)}.setcard.theme{--c:#f59e0b}.setcard.adm{--c:#0891b2}
.bigpw{font:700 26px/1.2 ui-monospace,Menlo,monospace;text-align:center;letter-spacing:2px;padding:16px;border-radius:12px;background:var(--surface2);border:1.5px dashed var(--brand);user-select:all}
@media(max-width:420px){.login.card{padding:22px 14px}.pbx{gap:3px}.pbx input:nth-child(4){margin-right:4px}.pbx input[type=text]{font-size:16px;padding:10px 0}}

/* WhatsApp join card (home, under the subjects) */
.wa-join{display:flex;align-items:center;gap:14px;margin:14px 0 6px;padding:14px 16px;border-radius:var(--radius);background:linear-gradient(135deg,#25d366,#128c7e);color:#fff;box-shadow:var(--shadow);transition:transform .15s,filter .15s}
.wa-join:hover{transform:translateY(-1px);filter:brightness(1.05)}
.wa-join .wi{flex:none;width:46px;height:46px;border-radius:50%;background:rgba(255,255,255,.2);display:grid;place-items:center}
.wa-join .wi .i{width:26px;height:26px;stroke:#fff;fill:none;stroke-width:1.8}
.wa-join .wt{flex:1;min-width:0;display:flex;flex-direction:column;line-height:1.3}
.wa-join .wt b{font-size:16px}.wa-join .wt small{font-size:12.5px;opacity:.92}
.wa-join .wb{flex:none;background:#fff;color:#0b7a4b;font-weight:800;border-radius:999px;padding:8px 18px}
.wa-join.off{background:linear-gradient(135deg,#64748b,#475569)}
@media(max-width:420px){.wa-join{padding:12px}.wa-join .wb{padding:7px 14px}}