/* GetMax Training Academy - one stylesheet for every page.
   Colours are tokens only. Light is the default; dark via the toggle or the OS setting. */
:root{
  --bg:#f6f7fb; --surface:#ffffff; --surface-2:#f0f2f8; --surface-3:#e7eaf3;
  --ink:#141726; --ink-2:#343a52; --muted:#5d6480; --line:#e1e4ee; --line-2:#cfd4e3;
  --brand:#4f46e5; --brand-2:#7c3aed; --brand-ink:#ffffff; --brand-soft:#eef0ff; --brand-line:#c7cbfb;
  --good:#0e8a55; --good-soft:#e3f6ec; --bad:#c9303e; --bad-soft:#fdecee; --warn:#a86608; --warn-soft:#fff4de;
  --fig-a:#e2e6ff; --fig-b:#fde9b8; --fig-c:#c8f1d9; --fig-d:#fbd3d8; --fig-e:#d7eefc; --fig-bg:#fafbff;
  --shadow:0 1px 2px rgba(20,23,38,.05),0 4px 16px rgba(20,23,38,.06);
  --radius:14px; --radius-sm:10px;
  --font:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,Consolas,monospace;
  --maxw:1180px; --gut:clamp(16px,4vw,32px);
  color-scheme:light;
}
:root[data-theme="dark"]{
  --bg:#0c0e16; --surface:#141724; --surface-2:#1a1e2e; --surface-3:#232839;
  --ink:#eceef6; --ink-2:#c9cde0; --muted:#98a0bb; --line:#262b3e; --line-2:#343a52;
  --brand:#8b8cff; --brand-2:#b38cff; --brand-ink:#0c0e16; --brand-soft:#1d2040; --brand-line:#3a3f7a;
  --good:#3ecf8e; --good-soft:#12291f; --bad:#ff6b7a; --bad-soft:#2d1519; --warn:#f0b34a; --warn-soft:#2b2210;
  --fig-a:#26306b; --fig-b:#5a4718; --fig-c:#174a33; --fig-d:#5a2129; --fig-e:#173b52; --fig-bg:#12152100;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 6px 20px rgba(0,0,0,.25);
  color-scheme:dark;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]):not([data-theme="dark"]){
    --bg:#0c0e16; --surface:#141724; --surface-2:#1a1e2e; --surface-3:#232839;
    --ink:#eceef6; --ink-2:#c9cde0; --muted:#98a0bb; --line:#262b3e; --line-2:#343a52;
    --brand:#8b8cff; --brand-2:#b38cff; --brand-ink:#0c0e16; --brand-soft:#1d2040; --brand-line:#3a3f7a;
    --good:#3ecf8e; --good-soft:#12291f; --bad:#ff6b7a; --bad-soft:#2d1519; --warn:#f0b34a; --warn-soft:#2b2210;
    --fig-a:#26306b; --fig-b:#5a4718; --fig-c:#174a33; --fig-d:#5a2129; --fig-e:#173b52; --fig-bg:#12152100;
    color-scheme:dark;
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 var(--font);-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img,svg{max-width:100%}
h1,h2,h3,h4{line-height:1.2;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(1.9rem,4.5vw,2.9rem);font-weight:800}
h2{font-size:clamp(1.35rem,3vw,1.75rem);font-weight:750}
h3{font-size:1.15rem;font-weight:700}
p{margin:0 0 1em}
small,.muted{color:var(--muted)}
code,.mono{font-family:var(--mono);font-size:.92em}
sup{font-size:.7em;line-height:0}
hr{border:0;border-top:1px solid var(--line);margin:28px 0}
:focus-visible{outline:3px solid var(--brand-line);outline-offset:2px;border-radius:6px}

/* ---------- shell */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}
.top{position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line);padding-top:env(safe-area-inset-top)}
.top .wrap{display:flex;align-items:center;gap:14px;height:64px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;letter-spacing:-.02em;white-space:nowrap}
.logo:hover{text-decoration:none}
.logo i{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:grid;place-items:center;color:#fff;font-style:normal;font-size:15px}
.logo span{display:flex;flex-direction:column;line-height:1.05}
.logo small{font-size:.62rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.nav{display:flex;gap:2px;margin-left:12px}
.nav a{color:var(--ink-2);padding:8px 12px;border-radius:9px;font-weight:550;font-size:.95rem}
.nav a:hover{background:var(--surface-2);text-decoration:none}
.nav a[aria-current="page"]{background:var(--brand-soft);color:var(--brand)}
.spacer{flex:1}
.iconbtn{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--ink);display:grid;place-items:center;cursor:pointer;font-size:17px}
.iconbtn:hover{background:var(--surface-2)}
.menu-btn{display:none}
@media (max-width:860px){
  .nav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:var(--surface);border-bottom:1px solid var(--line);padding:10px var(--gut) 16px;margin:0;box-shadow:var(--shadow)}
  .nav.open{display:flex}
  .nav a{padding:12px}
  .menu-btn{display:grid}
}
main{padding:28px 0 72px;min-height:70vh}
footer{border-top:1px solid var(--line);padding:28px 0 calc(28px + env(safe-area-inset-bottom));color:var(--muted);font-size:.9rem}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between}

/* ---------- building blocks */
.btn{white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 18px;border-radius:11px;border:1px solid transparent;font:600 .98rem var(--font);cursor:pointer;text-decoration:none!important;transition:transform .08s,background .15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff}
.btn-primary:hover{filter:brightness(1.07)}
.btn-ghost{background:var(--surface);border-color:var(--line-2);color:var(--ink)}
.btn-ghost:hover{background:var(--surface-2)}
.btn-soft{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-line)}
.btn-sm{min-height:36px;padding:6px 12px;font-size:.88rem;border-radius:9px}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(18px,3vw,26px);box-shadow:var(--shadow)}
.card.flat{box-shadow:none}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(min(100%,200px),1fr))}
.pill{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:.78rem;font-weight:650;background:var(--surface-2);color:var(--ink-2);border:1px solid var(--line)}
.pill.brand{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-line)}
.pill.good{background:var(--good-soft);color:var(--good);border-color:transparent}
.pill.bad{background:var(--bad-soft);color:var(--bad);border-color:transparent}
.pill.warn{background:var(--warn-soft);color:var(--warn);border-color:transparent}
.eyebrow{font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--brand)}
.lead{font-size:1.12rem;color:var(--ink-2);max-width:62ch}
.crumbs{font-size:.9rem;color:var(--muted);margin-bottom:14px}
.crumbs a{color:var(--muted)}
.empty{text-align:center;color:var(--muted);padding:36px 12px}
.skeleton{background:linear-gradient(90deg,var(--surface-2),var(--surface-3),var(--surface-2));background-size:200% 100%;animation:sk 1.2s infinite;border-radius:10px;min-height:18px}
@keyframes sk{to{background-position:-200% 0}}
.alert{padding:12px 14px;border-radius:10px;font-size:.95rem;margin:10px 0}
.alert.bad{background:var(--bad-soft);color:var(--bad)}
.alert.good{background:var(--good-soft);color:var(--good)}
.alert.info{background:var(--brand-soft);color:var(--ink-2)}

/* ---------- forms */
label{display:block;font-weight:600;font-size:.92rem;margin:14px 0 6px}
input,select,textarea{width:100%;min-height:46px;padding:10px 13px;border-radius:10px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);font:16px var(--font)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.hint{font-size:.85rem;color:var(--muted);margin-top:6px}
.tabs{display:flex;background:var(--surface-2);border-radius:12px;padding:4px;gap:4px;margin-bottom:10px}
.tabs button{flex:1;min-height:40px;border:0;border-radius:9px;background:transparent;color:var(--muted);font:600 .95rem var(--font);cursor:pointer}
.tabs button[aria-selected="true"]{background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}
@media (max-width:520px){.two{grid-template-columns:1fr}}

/* ---------- landing */
.hero{position:relative;overflow:hidden;border-radius:22px;padding:clamp(28px,6vw,64px);background:radial-gradient(1200px 400px at 0% 0%,var(--brand-soft),transparent 60%),radial-gradient(800px 400px at 100% 100%,color-mix(in srgb,var(--brand-2) 14%,transparent),transparent 60%),var(--surface);border:1px solid var(--line)}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.55;pointer-events:none}
.hero > *{position:relative}
.hero-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:clamp(20px,4vw,48px);align-items:start}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}}
.stat{display:flex;flex-direction:column}
.stat b{font-size:1.7rem;letter-spacing:-.03em}
.stat span{color:var(--muted);font-size:.88rem}
.feature{display:flex;gap:14px;align-items:flex-start}
.feature .ic{flex:none;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);font-size:20px}

/* ---------- library */
.topic-card{display:flex;flex-direction:column;gap:8px;color:var(--ink);transition:border-color .15s,transform .15s}
.topic-card:hover{text-decoration:none;border-color:var(--brand-line);transform:translateY(-2px)}
.topic-card h3{margin:0}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{font-size:.78rem;padding:2px 9px;border-radius:999px;background:var(--surface-2);color:var(--muted)}
.bar{height:6px;border-radius:99px;background:var(--surface-3);overflow:hidden}
.bar > i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));border-radius:99px}
.sec-head{display:flex;align-items:end;justify-content:space-between;gap:12px;margin:40px 0 14px}

/* ---------- lesson */
.lesson{display:grid;grid-template-columns:250px minmax(0,1fr);gap:40px;align-items:start}
.toc{position:sticky;top:84px;font-size:.92rem;max-height:calc(100vh - 100px);overflow:auto}
.toc a{display:block;padding:6px 10px;border-radius:8px;color:var(--ink-2);border-left:2px solid transparent}
.toc a:hover{background:var(--surface-2);text-decoration:none}
.toc a.on{border-left-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.toc .t-h{font-size:.74rem;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);margin:14px 10px 6px;font-weight:700}
@media (max-width:980px){.lesson{grid-template-columns:1fr}.toc{position:static;max-height:none;display:none}}
.prose{max-width:74ch}
.prose p,.prose li{color:var(--ink-2)}
.block{margin:0 0 44px}
.block > h2{padding-top:6px}
.hook{font-size:1.25rem;font-weight:600;line-height:1.5;border-left:4px solid var(--brand);padding:6px 0 6px 18px;margin:18px 0 22px;color:var(--ink)}
.formula{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;margin:12px 0}
.formula > div{padding:12px 14px;border-top:1px solid var(--line)}
.formula > div:nth-child(-n+2){border-top:0}
.formula .f{font-family:var(--mono);font-size:.95rem;background:var(--surface-2);color:var(--ink);font-weight:600}
.formula .w{color:var(--ink-2);font-size:.95rem}
@media (max-width:640px){.formula{grid-template-columns:1fr}.formula .w{border-top:0!important;padding-top:4px}.formula > div:nth-child(2){border-top:0}}
.fig{margin:16px 0;background:var(--fig-bg);border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px}
.fig svg{display:block;margin:0 auto;max-height:340px;width:100%;height:auto}
.fig figcaption{text-align:center;color:var(--muted);font-size:.9rem;margin-top:8px}
.figs{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:12px}
.figs .fig{margin:0}
.fig .s{stroke:var(--ink);stroke-width:2;stroke-linejoin:round}
.fig .thin{stroke-width:1.2}
.fig .thick{stroke:var(--brand);stroke-width:3.2}
.fig .d{stroke:var(--brand);stroke-dasharray:6 5;stroke-width:1.6;fill:none}
.fig .a{fill:var(--fig-a)} .fig .b{fill:var(--fig-b)} .fig .c{fill:var(--fig-c)} .fig .d2{fill:var(--fig-d)} .fig .e{fill:var(--fig-e)}
.fig .o{fill-opacity:.55}
.fig .bg{fill:var(--surface)} .fig .none{fill:transparent}
.fig .dot{fill:var(--ink)}
.fig text{font-family:var(--font);font-size:14px;fill:var(--ink)}
.fig .tm{fill:var(--muted);font-size:13px}
.fig .tb{font-weight:700}
.fig .tred{fill:var(--bad);font-weight:700}
.worked{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);margin:16px 0;overflow:hidden}
.worked .wq{padding:14px 18px;background:var(--surface-2);font-weight:600;display:flex;gap:10px}
.worked .wq b{color:var(--brand);flex:none}
.worked ol{margin:0;padding:14px 18px 6px 44px}
.worked li{margin:0 0 10px}
.worked li .why{display:block;font-size:.9rem;color:var(--muted);margin-top:2px}
.worked li .why::before{content:"Why: ";font-weight:700;color:var(--brand)}
.worked .wa{padding:10px 18px 14px;font-weight:700}
.worked .wa span{color:var(--good)}
.tipbox{display:flex;gap:12px;background:var(--warn-soft);border-radius:var(--radius-sm);padding:12px 16px;margin:14px 0;color:var(--ink-2)}
.tipbox b{color:var(--warn);white-space:nowrap}
.trap{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;margin:10px 0}
.trap > div{padding:12px 14px}
.trap .no{background:var(--bad-soft)} .trap .yes{background:var(--good-soft)}
.trap .no::before{content:"Wrong thinking";display:block;font-size:.75rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--bad);margin-bottom:4px}
.trap .yes::before{content:"Do this instead";display:block;font-size:.75rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--good);margin-bottom:4px}
@media (max-width:640px){.trap{grid-template-columns:1fr}}
.plan{width:100%;border-collapse:collapse;font-size:.95rem}
.plan td{padding:10px 12px;border-top:1px solid var(--line);vertical-align:top}
.plan td:first-child{white-space:nowrap;font-family:var(--mono);color:var(--brand);font-weight:700;width:1%}
table.ref{width:100%;border-collapse:collapse;font-size:.94rem;margin:10px 0}
table.ref th,table.ref td{padding:8px 10px;border:1px solid var(--line);text-align:left}
table.ref th{background:var(--surface-2);font-weight:700}
table.ref td.n,table.ref th.n{text-align:right;font-family:var(--mono)}
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
details.fold{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);margin:10px 0}
details.fold summary{cursor:pointer;padding:12px 16px;font-weight:650;list-style:none;display:flex;justify-content:space-between;gap:10px}
details.fold summary::after{content:"+";color:var(--muted);font-weight:800}
details.fold[open] summary::after{content:"-"}
details.fold > div{padding:0 16px 14px}
.stickybar{position:sticky;bottom:0;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(8px);border-top:1px solid var(--line);padding:12px 0 calc(12px + env(safe-area-inset-bottom));margin-top:30px}

/* ---------- practice */
.pq{font-size:1.15rem;font-weight:600;line-height:1.5;margin:10px 0 18px}
.opt{display:block;width:100%;text-align:left;min-height:52px;padding:12px 16px;margin:0 0 10px;border-radius:12px;border:1.5px solid var(--line-2);background:var(--surface);color:var(--ink);font:500 1rem var(--font);cursor:pointer}
.opt:hover{border-color:var(--brand-line);background:var(--brand-soft)}
.opt.right{border-color:var(--good);background:var(--good-soft)}
.opt.wrong{border-color:var(--bad);background:var(--bad-soft)}
.opt[disabled]{cursor:default}
.progress-dots{display:flex;gap:5px;flex-wrap:wrap}
.progress-dots i{width:10px;height:10px;border-radius:50%;background:var(--surface-3)}
.progress-dots i.ok{background:var(--good)} .progress-dots i.no{background:var(--bad)} .progress-dots i.cur{outline:2px solid var(--brand);outline-offset:1px}
.timer{font-family:var(--mono);color:var(--muted)}
.result-ring{--p:0;width:140px;height:140px;border-radius:50%;background:conic-gradient(var(--brand) calc(var(--p)*1%),var(--surface-3) 0);display:grid;place-items:center}
.result-ring > div{width:112px;height:112px;border-radius:50%;background:var(--surface);display:grid;place-items:center;font-size:1.7rem;font-weight:800}

/* ---------- dashboard */
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,170px),1fr));gap:14px}
.kpi{padding:18px}
.kpi b{display:block;font-size:1.9rem;letter-spacing:-.03em}
.kpi span{color:var(--muted);font-size:.88rem}
.heat{display:grid;grid-template-columns:repeat(auto-fill,minmax(14px,1fr));gap:4px;max-width:520px}
.heat i{aspect-ratio:1;border-radius:3px;background:var(--surface-3)}
.heat i.on{background:var(--brand)}
.trow{display:grid;grid-template-columns:minmax(0,1.5fr) 1fr auto;gap:12px;align-items:center;padding:10px 0;border-top:1px solid var(--line)}
.trow:first-child{border-top:0}

/* ---------- present mode */
body.present{background:var(--bg);overflow:hidden}
.deck{height:100dvh;display:flex;flex-direction:column}
.deck-top{display:flex;align-items:center;gap:10px;padding:10px 18px;border-bottom:1px solid var(--line);font-size:.9rem;color:var(--muted)}
.slide{flex:1;overflow:auto;display:none;padding:clamp(20px,4vw,56px) clamp(20px,6vw,96px)}
.slide.on{display:block}
.slide h1{font-size:clamp(2rem,5vw,3.6rem)}
.slide h2{font-size:clamp(1.6rem,3.6vw,2.6rem);margin-bottom:.6em}
.slide p,.slide li{font-size:clamp(1.1rem,2.1vw,1.55rem);line-height:1.55;color:var(--ink-2)}
.slide .fig svg{max-height:52vh}
.slide .formula .f,.slide .formula .w{font-size:clamp(1rem,1.8vw,1.35rem)}
.slide .step{opacity:0;transform:translateY(6px);transition:opacity .25s,transform .25s}
.slide .step.show{opacity:1;transform:none}
.deck-bot{display:flex;align-items:center;gap:10px;padding:10px 18px calc(10px + env(safe-area-inset-bottom));border-top:1px solid var(--line)}
.deck-bot .bar{flex:1}
.projector{--ink-2:var(--ink)}

/* ---------- cheat sheets */
.cheat{break-inside:avoid;margin-bottom:16px}
.cheat h3{margin-bottom:8px}
.pascal{font-family:var(--mono);text-align:center;line-height:1.9;font-size:.95rem;overflow-x:auto;white-space:nowrap}

@media print{
  .top,footer,.toc,.stickybar,.no-print{display:none!important}
  body{background:#fff}
  .card,.worked,.fig{box-shadow:none;break-inside:avoid}
  .lesson{display:block}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* aliases read by visuals.js (animated speed-maths visuals) */
:root{--text:var(--ink);--ok:var(--good);--panel-2:var(--surface-2);--accent:var(--brand)}
.vishost,[data-vis]{margin:10px 0}