/* KaTeX size, practice page details: difficulty bar, welcome pop-up, flame, exercise card, part tabs, camera, level box */
.katex{font-size:1.05em}
.st .katex-display,.tx .katex-display{margin:.4em 0}
.stem{margin-bottom:10px}
.self{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.self .btn-ghost{background:var(--bg);color:var(--ink);border:2px solid var(--line)}
.f input{min-width:62px}
.pl{display:grid;grid-template-columns:280px minmax(0,1fr);gap:28px;align-items:start}
.side{position:sticky;top:calc(var(--toph-v,var(--toph)) / var(--z) + 16px);background:var(--panel);border-radius:14px;padding:16px 12px 12px;display:flex;flex-direction:column;gap:12px;max-height:calc((100vh - var(--toph)) / var(--z) - 32px)}
.side .sh{display:flex;align-items:center;gap:10px;padding:0 4px}
.side .sh b{display:block;font-size:15px;line-height:20px}
.side .sh span{font-size:12.5px;color:var(--muted)}
.side .sp{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:0 4px;font-size:12.5px;color:var(--muted)}
.side ol{list-style:none;margin:0;padding:0;overflow-y:auto;display:flex;flex-direction:column;gap:4px}
.side li button{display:flex;align-items:center;gap:10px;width:100%;text-align:left;background:none;border:2px solid transparent;border-radius:10px;padding:8px 8px;font-size:13.5px;line-height:18px;cursor:pointer;color:var(--ink)}
.side li button:hover{background:var(--bg)}
.side li button[aria-current="true"]{background:var(--bg);border-color:var(--acc)}
.side li .k{display:block;font-size:12px;color:var(--muted)}
.side .m{width:16px;height:16px;border-radius:5px}
.qhead{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap;margin-bottom:14px}
.qnav{display:flex;gap:6px}
.qnav button{width:36px;height:36px;border-radius:10px;border:2px solid var(--line);background:var(--bg);font-size:16px;cursor:pointer;color:var(--ink)}
.qnav button:hover{border-color:var(--acc)}
.card .st{font-size:17px;line-height:30px}
.yours{margin-top:20px;background:var(--bg);border-radius:12px;padding:16px 18px}
.yours h3{margin:0 0 4px;font-size:15px;font-weight:900}
.yours .help{margin:0 0 12px;font-size:13px;color:var(--muted)}
.yours .ans{margin-top:0}
.yours textarea{width:100%;min-height:150px;resize:vertical;border-radius:10px;border:2px solid var(--sq);background:var(--panel);padding:12px 14px;font:400 15px/24px var(--font);color:var(--ink);outline:none}
.yours textarea:focus{border-color:var(--acc)}
.yours .row2{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:12px}
.cmp{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:14px}
.sol-btn{margin-top:16px}
.dline{display:flex;align-items:center;gap:8px;margin:10px 0 0;font-size:13px;color:var(--muted)}
.fb .fbm{flex:1;min-width:0}
.fb .dchip{flex:none;margin-left:auto;background:var(--card)}
.dchip .dk{font-weight:600;color:var(--muted)}
details>.dline{margin:10px 0 4px}
.app.prac .card{padding:20px 32px}
.app.prac .card .st{font-size:19px;line-height:30px}
.app.prac .yours{margin-top:12px;padding:12px 20px 14px}
.app.prac .yours h3{font-size:17px;margin:0 0 6px}
.app.prac .calc{padding:8px;margin-top:10px}
.app.prac .calc-h{padding-bottom:5px}
.calc-h em{font-style:normal;font-weight:600;text-transform:none;letter-spacing:0}
.app.prac .calc-d{min-height:40px;margin-bottom:6px}
.app.prac .calc-k{gap:5px}
.app.prac .calc-k button{height:32px;font-size:14px}
@media (max-width:520px){.app.prac .card{padding:16px}.app.prac .calc-k button{height:40px}}
.sq-r>.dline:first-child{margin-top:0;margin-bottom:10px}
.dchip{display:inline-flex;align-items:center;gap:7px;padding:2px 10px;border-radius:999px;background:var(--panel);color:var(--ink);font-weight:800;font-size:12.5px;line-height:20px}
/* difficulty bar: one continuous track, green (easy) to red (very hard), filled up to the level.
   The gradient is sized to the whole track, so a short fill stays green and a full one ends in red. */
.dbar{position:relative;display:inline-block;width:88px;height:9px;border-radius:5px;background:var(--line);overflow:hidden;flex:none}
.dbar i{position:absolute;left:0;top:0;bottom:0;width:var(--w);border-radius:5px;background:linear-gradient(90deg,#3a9a4a,#9db21e 36%,#e3961b 68%,#d0412f) 0 0/88px 100%}
.dchip.d1 b{color:#2a7f38} .dchip.d2 b{color:#6f7f0e} .dchip.d3 b{color:#b06800} .dchip.d4 b{color:#c2412f}
@media (prefers-reduced-motion:no-preference){
  .dbar i{animation:dfill .7s cubic-bezier(.25,1,.4,1) both}
  @keyframes dfill{from{width:0}to{width:var(--w)}}
}}
}
.simpill{background:#2a2622;color:#fff;box-shadow:0 10px 28px rgba(42,38,34,.32),0 2px 6px rgba(42,38,34,.14);gap:10px}
.simpill:hover{background:#000}
.simpill b{font-variant-numeric:tabular-nums;font-size:21px;letter-spacing:.02em}
body>.simpill{height:66px;padding:0 9px 0 22px;gap:12px;font-size:16px}
.simpill .sp-main{display:flex;align-items:center;gap:inherit;height:100%;border:none;background:none;color:inherit;font:inherit;cursor:pointer;padding:0 4px 0 0}
.simpill .sp-pz{flex:none;width:46px;height:46px;border-radius:50%;border:none;background:rgba(255,255,255,.14);color:#fff;font-size:18px;cursor:pointer;display:grid;place-items:center}
.simpill .sp-pz:hover{background:rgba(255,255,255,.26)}
.qhead .simpill{padding:0 4px 0 14px!important}
.qhead .simpill .sp-pz{width:28px;height:28px;font-size:13px}
body>.simpill svg{width:24px;height:24px}
.simpill.paused{background:#5f5850}
.simpill .sp-l{font-weight:600;font-size:15px;opacity:.85}
.simpill .sp-go{font-size:15px;color:#bccbf5}
.simpill.warn b{color:#ffcf8a}
.simpill::after{display:none}
@media (max-width:600px){.simpill .sp-l{display:none}}
.qhead .simpill{position:static;flex:none;height:36px;margin:0 12px 0 auto;padding:0 14px;font-size:13.5px;box-shadow:none;animation:none}
.qhead .simpill b{font-size:14.5px}
.qhead .simpill:hover{transform:none}
@media (max-width:860px){.qhead .simpill .sp-l{display:none}}
.calc-dw{position:relative}
.calc-dw .calc-d{padding-left:40px}
.calc-q{position:absolute;left:7px;top:50%;transform:translateY(-50%);width:26px;height:26px;border:none;border-radius:50%;background:var(--acc-w);color:var(--acc);font:800 14px/1 var(--font);cursor:pointer}
.calc-q:hover{background:var(--acc);color:var(--on-acc)}
.tipsdlg{width:880px;max-width:min(880px,calc(100vw - 32px))}
.tipsdlg .dlg-in{padding:40px 48px 34px;gap:22px}
.tipsdlg .eyebrow{font-size:16px}
.tipsdlg h2{font-size:38px;line-height:46px}
.tipsdlg .btn{font-size:18px;padding:14px 30px;border-radius:12px}
.tipsdlg .dlg-x{width:44px;height:44px;font-size:26px}
@media (max-width:600px){.tipsdlg .dlg-in{padding:22px 18px 18px;gap:14px}.tipsdlg h2{font-size:26px;line-height:32px}.tipsdlg .btn{font-size:16px;padding:12px 20px}}
.wsteps{margin:0;padding-left:22px;font-size:16px;line-height:25px}
.sd-demo{display:flex;justify-content:center;padding:18px;border-radius:14px;background:var(--tm-w)}
.sd-btn{display:inline-flex;align-items:center;gap:4px;padding:10px 18px;border-radius:12px;border:2px solid var(--tm);background:var(--card);color:var(--tm);font-weight:800;font-size:16px}
.sd-p{margin:0;font-size:16px;line-height:25px}
.wsteps li{margin:8px 0;padding-left:4px}
.wsteps li::marker{font-weight:900;color:var(--acc)}
.wnote{margin:4px 0 0;font-size:14px;color:var(--muted)}
.weldlg .dlg-f{align-items:center;justify-content:space-between}
/* the welcome pop-up is the first thing a new student reads: twice the usual size */
.weldlg{width:880px;max-width:min(880px,calc(100vw - 32px))}
.weldlg .dlg-in{padding:40px 48px 34px;gap:24px}
.weldlg .eyebrow{font-size:16px}
.weldlg h2{font-size:38px;line-height:46px}
.weldlg .wsteps{font-size:22px;line-height:34px;padding-left:32px}
.weldlg .wsteps li{margin:14px 0;padding-left:6px}
.weldlg .wnote{font-size:18px;line-height:28px}
.weldlg .btn{font-size:18px;padding:14px 30px;border-radius:12px}
.weldlg .lnk{font-size:17px}
.weldlg .dlg-x{width:44px;height:44px;font-size:26px}
@media (max-width:600px){.weldlg .dlg-in{padding:22px 18px 18px;gap:14px}.weldlg h2{font-size:26px;line-height:32px}.weldlg .wsteps{font-size:17px;line-height:27px;padding-left:24px}.weldlg .wnote{font-size:15px}.weldlg .btn{font-size:16px;padding:12px 20px}}
.self-hi{border-color:var(--sun)!important;background:var(--tm-w)!important;color:var(--tm)!important;box-shadow:0 0 0 3px rgba(217,138,31,.2)}
.self-note{display:flex;align-items:center;flex-wrap:wrap;gap:8px 14px;margin:12px 0 0;padding:10px 12px;border-radius:12px;background:var(--tm-w);font-size:14px;color:var(--ink)}
.self-cta{background:var(--tm);border:none;color:#fff;font-weight:800;padding:9px 16px}
.self-cta:hover:not(:disabled){filter:brightness(1.05)}
@media (max-width:760px){.self-note{flex-direction:column;align-items:stretch;text-align:center}.self-cta{width:100%;justify-content:center;padding:12px 16px;font-size:15px}}
@media (prefers-reduced-motion:no-preference){.self-hi{animation:selfpulse 2s ease-in-out 2}@keyframes selfpulse{50%{box-shadow:0 0 0 7px rgba(217,138,31,.12)}}}
.tips{margin:0;padding-left:28px;font-size:21px;line-height:34px}
.tips li{margin:10px 0}
.tips b{font-weight:800}
.tips code{font:600 19px/1 ui-monospace,Consolas,monospace;background:var(--panel);border-radius:6px;padding:3px 8px}
@media (max-width:600px){.tips{font-size:16px;line-height:26px;padding-left:20px}.tips code{font-size:14.5px}}
.sq-go{flex:none;border:none;background:none;padding:2px 4px;font:700 13px var(--font);color:var(--acc);cursor:pointer;white-space:nowrap;border-radius:6px}
.sq-go:hover{background:var(--acc-w)}
body.fab-up .fab{bottom:96px}
@media (max-width:600px){.sq-go{font-size:12px}body.fab-up .fab{bottom:92px}}
.tmb{display:inline-block;margin-left:8px;padding:1px 7px;border-radius:999px;background:var(--tm-w);color:var(--tm);font-size:11px;line-height:16px;font-weight:800;letter-spacing:.02em;vertical-align:1px;white-space:nowrap}
.tm-flag{display:inline-block;margin:0 0 4px 8px;border:none;border-radius:999px;background:var(--tm-w);color:var(--tm);padding:3px 11px;font:700 12.5px/18px var(--font);cursor:pointer;transition:background-color .15s}
.tm-flag:hover{background:var(--tm-h)}
.ndot{display:inline-grid;place-items:center;min-width:18px;height:18px;margin-left:6px;padding:0 5px;border-radius:999px;background:var(--sun);color:#fff;font-size:11px;font-weight:800;line-height:1;vertical-align:1px}
.ndot[hidden]{display:none}
.tmc{background:var(--tm-w)}
.tmc .k{color:var(--tm)}
@media (prefers-reduced-motion:no-preference){.ndot{animation:pop .5s cubic-bezier(.3,1.6,.5,1)}}
.sol-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.sol-row .sol-btn{margin-top:0}
.sq-try{margin:10px 0 0;padding:8px 12px;border-radius:10px;background:var(--bad-w);color:var(--bad);font-size:14px;font-weight:700}
.calc{margin-top:14px;width:100%;max-width:580px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:10px;box-shadow:0 2px 0 var(--line)}
.ans.big+.calc{margin:14px auto 0}
.calc-h{display:flex;justify-content:space-between;align-items:baseline;gap:8px;padding:0 2px 6px;font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.calc-tg{text-transform:none;letter-spacing:0;font-weight:700;color:var(--acc)}
.calc-d{display:flex;align-items:center;justify-content:flex-end;min-height:46px;margin-bottom:8px;padding:6px 12px;background:var(--card);border:1px solid var(--line);border-radius:10px;box-shadow:inset 0 1px 3px rgba(42,38,34,.06);font-size:16px;overflow-x:auto;overflow-y:hidden;text-align:right}
.calc-d .mph{font-size:12.5px;line-height:17px;color:var(--muted);text-align:left;width:100%}
.calc-d .katex{font-size:1.1em}
.calc-k{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:6px}
.calc-k button{height:36px;min-width:0;border:none;border-radius:9px;background:var(--card);box-shadow:inset 0 0 0 1px var(--line),0 1px 0 var(--line);font:600 14.5px/1 var(--font);color:var(--ink);cursor:pointer;transition:background-color .15s,color .15s,transform .1s}
.calc-k button:hover{background:var(--acc-w);color:var(--acc)}
.calc-k button:active{transform:scale(.92)}
.calc-k button.fn{background:var(--acc-w);color:var(--acc);font-weight:800}
.calc-k button.fn:hover{background:var(--acc);color:var(--on-acc)}
@media (max-width:600px){.calc{max-width:none}.calc-k{grid-template-columns:repeat(5,minmax(0,1fr))}.calc-k button{height:40px}}
.cmp.one{grid-template-columns:minmax(0,1fr)}
.rightans{background:var(--good-w);border-radius:10px;padding:10px 14px;margin:14px 0 2px}
.rightans .lb{font-size:12px;font-weight:900;letter-spacing:.04em;text-transform:uppercase;color:var(--good);margin-bottom:4px}
.rightans .v{font-size:16px;line-height:26px}
.done-peek{display:flex;flex-wrap:wrap;align-items:center;gap:4px 12px;margin:2px 0 12px;font-size:14px;font-weight:700;color:var(--good)}
.done-peek>span svg{width:15px;height:15px;vertical-align:-2px;margin-right:6px}
.done-peek .lnk{font-size:14px}
.peek-box{flex-basis:100%;color:var(--ink);font-weight:400}
.peek-box .sol{margin-top:12px}
.cmp>div{background:var(--panel);border-radius:10px;padding:10px 14px}
.cmp .lb{font-size:12px;font-weight:900;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}
.cmp .v{font-size:16px;line-height:26px}
.cmp .ok{color:var(--good)} .cmp .no{color:var(--bad)}
.cmp .mine{white-space:pre-wrap;font-size:14.5px;line-height:23px}
.cmp.proof{grid-template-columns:1fr}
@media (min-width:900px){.cmp.proof{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:860px){.pl{grid-template-columns:1fr}.side{position:static;max-height:none}.side ol{max-height:220px}}


/* the flame in the practice header (correct answers in a row) */
.flame{position:relative;display:inline-flex;align-items:center;gap:calc(4px + (var(--fs,1) - 1) * 10px);margin-left:auto;padding:6px 13px 6px 10px;border-radius:999px;background:var(--org-w);color:var(--org);font-weight:900;font-size:17px;line-height:22px;flex:none;transform-origin:50% 80%}
.flame svg{width:22px;height:22px;transform:scale(var(--fs,1));transform-origin:50% 85%;transition:transform .3s cubic-bezier(.2,1.4,.4,1)}
.flame .fo{fill:#f08c00}.flame .fi{fill:#ffd43b}
.flame.cold{background:rgba(77,171,247,.14);color:#3d8fd6}.flame.cold .fo{fill:#a5d8ff}.flame.cold .fi{fill:#e7f5ff}
.flame.lv1{background:rgba(252,196,25,.16);color:#c98a00}.flame.lv1 .fo{fill:#ffd43b}.flame.lv1 .fi{fill:#fff9db}
.flame.lv2{background:rgba(250,176,5,.18);color:#c27c00}.flame.lv2 .fo{fill:#fab005}.flame.lv2 .fi{fill:#fff3bf}
.flame.lv4 .fo{fill:#f76707}.flame.lv4{box-shadow:0 0 0 2px rgba(247,103,7,.25)}
.flame.lv5 .fo{fill:#e8590c}.flame.lv5 .fi{fill:#ffe066}.flame.lv5{color:#d9480f;box-shadow:0 0 0 2px rgba(232,89,12,.3),0 0 12px rgba(247,103,7,.3)}
.flame.lv6 .fo{fill:#c92a2a}.flame.lv6 .fi{fill:#ffec99}.flame.lv6{color:#c92a2a;background:rgba(250,82,82,.14);box-shadow:0 0 0 2px rgba(201,42,42,.3),0 0 18px rgba(250,82,82,.45)}
@media (prefers-reduced-motion:no-preference){.flame.lv6 svg{animation:flicker 1.6s ease-in-out infinite}
  @keyframes flicker{0%,100%{filter:drop-shadow(0 0 2px rgba(255,146,43,.7))}50%{filter:drop-shadow(0 0 6px rgba(255,107,107,.9))}}}
/* small flame on the chapter cards (Capitole) */
.flame.sm{margin-left:0;padding:2px 8px 2px 6px;font-size:13px;line-height:18px;gap:3px}
.flame.sm svg{width:15px;height:15px;transform:scale(calc(1 + (var(--fs,1) - 1) * .45))}
.flame.sm.lv5,.flame.sm.lv4{box-shadow:0 0 0 1.5px rgba(232,89,12,.25)}
.flame.up{animation:flameUp .6s cubic-bezier(.2,1.6,.4,1)}
.flame.down{animation:flameDown .5s}
@keyframes flameUp{0%{transform:scale(1)}40%{transform:scale(1.3)}100%{transform:scale(1)}}
@keyframes flameDown{0%,100%{transform:translateX(0)}20%{transform:translateX(-5px)}40%{transform:translateX(5px)}60%{transform:translateX(-3px)}80%{transform:translateX(3px)}}
.flame-d{position:absolute;right:-4px;top:-6px;font-style:normal;font-size:13px;font-weight:900;color:var(--bad,#c92a2a);animation:flameMinus 1.1s ease-out forwards;pointer-events:none}
@keyframes flameMinus{0%{opacity:0;transform:translateY(4px)}20%{opacity:1}100%{opacity:0;transform:translateY(-18px)}}
.qhead .flame+.qnav{margin-left:10px}

.fb .fbt{display:block;font-weight:900;font-size:15px;line-height:20px}
.fb .fbd{display:block;font-weight:600;font-size:14px;line-height:20px;margin-top:2px;opacity:.9}
.fb.no{border:1.5px solid var(--bad)}
#af .f input.no{border-color:var(--bad)!important;box-shadow:0 0 0 3px var(--bad-w)!important}

/* the exercise card: a thin band in the Subiect's colour and a faint glow, nothing more */
.app.prac .ex-card{border-top:3px solid var(--sc,var(--acc));
  background:radial-gradient(600px 220px at 0% 0%,color-mix(in srgb,var(--sc,var(--acc)) 7%,transparent),transparent 75%),var(--panel)}
.app.prac .ex-card .yours{background:var(--card);box-shadow:0 1px 0 var(--line)}
/* dark theme: the exercise page stays plain (the glow and the paper look odd on brown) */
:root[data-theme="dark"] body.bg-pr{background:var(--bg)}
:root[data-theme="dark"] body.bg-pr .bgfx{display:none}
:root[data-theme="dark"] .app.prac .ex-card{background:var(--panel)}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]) body.bg-pr{background:var(--bg)}
  :root:not([data-theme="light"]) body.bg-pr .bgfx{display:none}
  :root:not([data-theme="light"]) .app.prac .ex-card{background:var(--panel)}
}

/* landing: PDF + notebook vs MateSim */
.wy-h{text-align:center;margin-inline:auto;max-width:640px}
.wy{max-width:900px;margin:0 auto;background:var(--card);border-radius:20px;box-shadow:0 1px 0 var(--line),0 10px 30px rgba(42,38,34,.06);overflow:hidden}
.wy-r{display:grid;grid-template-columns:minmax(150px,.8fr) 1fr 1fr;gap:0 20px;align-items:center;padding:16px 24px;border-top:1px solid var(--line)}
.wy-r:first-child{border-top:none}
.wy-hd{padding-block:14px;background:var(--panel);font-size:13px;font-weight:900;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
.wy-hd .wy-ms{color:var(--acc)}
.wy-r>b{font-size:15.5px;color:var(--ink)}
.wy-no,.wy-yes{display:flex;align-items:flex-start;gap:10px;font-size:15px;line-height:22px}
.wy-no{color:var(--muted)}
.wy-yes{color:var(--ink);font-weight:600}
.wy-no svg,.wy-yes svg{flex:none;width:20px;height:20px;padding:3px;border-radius:50%;margin-top:1px}
.wy-no svg{background:var(--panel);color:var(--sq)}
.wy-yes svg{background:var(--good-w);color:var(--good)}
@media (max-width:700px){.wy-hd{display:none}.wy-r{grid-template-columns:1fr;gap:8px;padding:16px 18px}.wy-r>b{font-size:16px}}

/* Subiectul III as whole problems: part tabs, part dots in lists, per-part AI scores */
.ptabs{display:flex;gap:8px;margin:12px 0 4px;flex-wrap:wrap}
.ptabs button{display:inline-flex;align-items:center;gap:6px;border:1.5px solid var(--line2);background:var(--card);color:var(--ink);border-radius:12px;padding:7px 14px;font:inherit;font-size:15px;cursor:pointer}
.ptabs button b{font-weight:900}.ptabs button span{font-size:12px;color:var(--muted);font-weight:700}
.ptabs button svg{width:14px;height:14px;color:var(--good)}
.ptabs button.p{border-color:color-mix(in srgb,var(--org) 50%,var(--line2))}
.ptabs button.d{border-color:color-mix(in srgb,var(--good) 55%,var(--line2))}
.ptabs button[aria-selected="true"]{border-color:var(--acc);background:var(--acc-w);color:var(--acc);box-shadow:0 0 0 3px color-mix(in srgb,var(--acc) 18%,transparent)}
.pdots{display:inline-flex;gap:4px}
.pdots i{font-style:normal;width:18px;height:18px;border-radius:6px;display:inline-grid;place-items:center;font-size:11px;font-weight:900;background:var(--panel);color:var(--muted);border:1px solid var(--line2)}
.pdots i.p{background:var(--org-w);color:var(--org);border-color:transparent}
.pdots i.d{background:var(--good-w);color:var(--good);border-color:transparent}
.ai-parts{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 10px}
.ai-parts span{padding:4px 10px;border-radius:999px;font-size:13px;font-weight:700;background:var(--panel)}
.ai-parts span.full{background:var(--good-w);color:var(--good)}.ai-parts span.half{background:var(--org-w);color:var(--org)}.ai-parts span.zero{background:var(--bad-w);color:var(--bad)}
.sp-ph{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.sp-ph .sq-aib{flex:none;margin-top:2px}
.sn-g{display:inline-flex;align-items:center;gap:4px;margin-right:10px}
.sn-gn{font-size:12px;font-weight:800;color:var(--muted);margin-right:2px}
.sn-row button.sn-part{margin-left:-2px}
/* phone camera: QR code on the computer, the capture page on the phone */
.ai-phone svg{width:17px;height:17px;vertical-align:-3px;margin-right:6px}
.ai-qr{display:flex;gap:18px;align-items:center;margin:12px 0;padding:14px;border-radius:14px;background:var(--card);border:1px solid var(--line)}
.ai-qr[hidden]{display:none}
.qr-img{flex:none;width:150px;height:150px;display:grid;place-items:center;background:#fff;border-radius:10px;padding:6px}
.qr-img svg{width:100%;height:100%}
.qr-t p{margin:6px 0 0;font-size:14px;line-height:21px;color:var(--muted)}
.qr-warn{color:var(--org)!important}
.qr-st{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--acc)!important}
.qr-dot{width:9px;height:9px;border-radius:50%;background:var(--acc);animation:qrPulse 1.2s ease-in-out infinite}
@keyframes qrPulse{50%{opacity:.25}}
@media (prefers-reduced-motion:reduce){.qr-dot{animation:none}}
.cam{min-height:70vh;display:grid;place-items:center;padding:16px 0}
.cam-c{max-width:440px;width:100%;text-align:center;display:flex;flex-direction:column;align-items:center;gap:12px}
.cam-c h1{margin:0;font-size:28px;line-height:34px}
.cam-c .lead{margin:0;color:var(--muted)}
.cam-m{width:120px;height:auto}
.cam-shot{font-size:18px;padding:16px 26px;display:inline-flex;align-items:center;gap:10px}
.cam-shot svg{width:22px;height:22px}
.cam-shot[hidden]{display:none}
.cam-prev{width:100%;max-height:50vh;object-fit:contain;border-radius:14px;border:1px solid var(--line)}
.cam-act{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.cam-act[hidden]{display:none}
.cam-st{min-height:22px;margin:0;color:var(--muted)}

/* the small level box (profile + Progres) */
.lvl{display:flex;align-items:center;gap:12px;max-width:340px;margin:10px 0 6px}
.lvl-n{flex:none;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:var(--acc);color:var(--on-acc);box-shadow:0 0 0 3px var(--acc-w)}
.lvl-n b{font-size:17px;font-weight:900}
.lvl-m{flex:1;min-width:0}
.lvl-t{display:flex;justify-content:space-between;gap:8px;font-size:13.5px;line-height:18px}
.lvl-t b{font-weight:800;color:var(--ink)}.lvl-t span{color:var(--muted);font-weight:600}
.lvl-bar{height:7px;border-radius:99px;background:var(--line);margin-top:5px;overflow:hidden}
.lvl-bar i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--acc),color-mix(in srgb,var(--acc) 60%,var(--good)))}
/* rings (.lv-r: the level square and the profile avatar) from level 1 (blue), 5 (green), 10 (bronze), 20 (silver), 30 (gold), 50 (diamond): a gradient border around the level square */
.lv-r.l1,.lv-r.l5,.lv-r.l10,.lv-r.l20,.lv-r.l30,.lv-r.l50{border:3px solid transparent;box-shadow:none;background:linear-gradient(var(--acc),var(--acc)) padding-box,var(--ring) border-box}
.lv-r.l1{--ring:linear-gradient(135deg,color-mix(in srgb,var(--acc) 35%,#fff),color-mix(in srgb,var(--acc) 70%,#000))}
.lv-r.l5{--ring:linear-gradient(135deg,#b6f2cf,#22a565 55%,#0e6b3f)}
.lv-r.l10{--ring:linear-gradient(135deg,#f0c08e,#c27a3d 55%,#8a4d1c)}
.lv-r.l20{--ring:linear-gradient(135deg,#ffffff,#aeb8c2 50%,#6f7b87)}
.lv-r.l30{--ring:linear-gradient(135deg,#fff1b0,#e0a020 50%,#a86f00);filter:drop-shadow(0 0 5px rgba(224,160,32,.5))}
@property --lva{syntax:'<angle>';inherits:false;initial-value:0deg}
.lv-r.l50{--ring:conic-gradient(from var(--lva),#7a5cf5,#2fa6bf,#9ef0ff,#e0a020,#e8577a,#7a5cf5);filter:drop-shadow(0 0 7px rgba(122,92,245,.55));animation:lvlSpin 4s linear infinite}
@keyframes lvlSpin{to{--lva:360deg}}
.lvl-n.big{width:104px;height:104px;border-radius:30px;border-width:6px}
.lvl-n.big b{font-size:46px}
.lvl-big{display:grid;place-items:center;width:auto;height:auto;padding:4px 0}
.lvl-n.pop{animation:lvlPop .6s cubic-bezier(.2,1.6,.4,1)}
.lv-r.l50.pop{animation:lvlPop .6s cubic-bezier(.2,1.6,.4,1),lvlSpin 4s linear infinite}
@keyframes lvlPop{0%{transform:scale(.5) rotate(-12deg)}100%{transform:scale(1) rotate(0)}}
/* the card that slides in at the top after a correct answer */
.lvl{position:relative}
.lvl-bar i{position:relative;overflow:hidden;transition:width .9s cubic-bezier(.22,1,.36,1)}
.lvl-bar i::after{content:"";position:absolute;inset:0;transform:translateX(-100%);background:linear-gradient(90deg,transparent,rgba(255,255,255,.75),transparent)}
.xp-go .lvl-bar i::after{animation:xpShine 1.1s .8s cubic-bezier(.4,0,.2,1)}
.xp-go .lvl-bar{animation:xpGlow 1.2s .5s ease-out}
.xp-go .lvl-n{animation:xpBump .5s 1.1s cubic-bezier(.2,1.6,.4,1)}
.xp-go .xl-num{color:var(--good);font-weight:800}
.xp-up .lvl-bar i{background:linear-gradient(90deg,#e0a020,var(--acc))}
@keyframes xpShine{to{transform:translateX(100%)}}
@keyframes xpGlow{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--acc) 55%,transparent)}100%{box-shadow:0 0 0 7px transparent}}
@keyframes xpBump{0%{transform:scale(1)}40%{transform:scale(1.18)}100%{transform:scale(1)}}
.xp-float{position:absolute;right:4px;top:-4px;font-size:13px;font-weight:900;color:var(--good);pointer-events:none;animation:xpFloat 1.6s .3s cubic-bezier(.22,1,.36,1) both}
@keyframes xpFloat{0%{opacity:0;transform:translateY(8px) scale(.8)}20%{opacity:1;transform:translateY(0) scale(1.1)}100%{opacity:0;transform:translateY(-22px) scale(1)}}
.xp-pop{position:fixed;left:50%;bottom:24px;z-index:85;display:flex;align-items:center;gap:12px;width:min(340px,calc(100vw - 32px));max-width:none;margin:0;
  padding:10px 14px;background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:0 12px 30px rgba(0,0,0,.14);
  transform:translate(-50%,32px) scale(.97);opacity:0;pointer-events:none;will-change:transform,opacity;
  transition:transform .55s cubic-bezier(.22,1,.36,1),opacity .4s cubic-bezier(.22,1,.36,1)}
.xp-pop.in{transform:translate(-50%,0) scale(1);opacity:1}
.xp-pop.out{transform:translate(-50%,24px) scale(.98);opacity:0;transition-duration:.45s,.35s}
.xp-pop .lvl-bar{height:9px}
body:has(.hb-toast.in) .xp-pop{bottom:118px}   /* the habit toast sits at the bottom too: stack above it */
body.has-sheet .xp-pop{bottom:calc(var(--shh,170px) + 12px)}   /* phones: above the verdict panel */
body.has-sheet:has(.hb-toast.in) .xp-pop{bottom:calc(var(--shh,170px) + 106px)}
@media (prefers-reduced-motion:reduce){.xp-pop,.lvl-bar i{transition:none}.lv-r.l50,.lvl-n.pop,.lv-r.l50.pop,.xp-go .lvl-bar,.xp-go .lvl-bar i::after,.xp-go .lvl-n,.xp-float{animation:none}.xp-float{display:none}}
.ph-note{position:fixed;left:50%;top:calc(var(--toph,64px) + 16px);transform:translateX(-50%);z-index:90;background:var(--ink);color:var(--bg);padding:10px 18px;border-radius:12px;font-weight:700;font-size:14.5px;box-shadow:0 10px 30px rgba(0,0,0,.2)}