/* LEK Study – lekstudy.pl. Colours follow the app (core/designsystem/Theme.kt).
   When this file (or probka.js) changes, bump ?v= in every HTML page so browsers fetch the new version. */
@font-face{font-family:"Bricolage Grotesque";src:url("fonts/bricolage-grotesque-latin-wght-normal.woff2") format("woff2");font-weight:200 800;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Bricolage Grotesque";src:url("fonts/bricolage-grotesque-latin-ext-wght-normal.woff2") format("woff2");font-weight:200 800;font-display:swap;unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

:root{
  --green:#047857;--deep:#053b2e;--deep-2:#064e3b;--mint:#d3f1e4;--mint-ink:#a7f3d0;
  --ground:#f5f8f6;--paper:#ffffff;--ink:#0f1a16;--slate:#55665e;--line:#e2e8e4;
  --pass:#fcd34d;--trap:#dc2626;--trap-soft:#fde8e8;
  --display:"Bricolage Grotesque",ui-sans-serif,system-ui,sans-serif;
  --text:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --wrap:1120px;
}
@media (prefers-color-scheme:dark){:root{--ground:#0b1411;--paper:#121e19;--ink:#e6efea;--slate:#9fb2a9;--line:#22322b;--mint:#103a2d;--trap-soft:#3a1414}}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;font:17px/1.6 var(--text);color:var(--ink);background:var(--ground);-webkit-font-smoothing:antialiased}
a{color:var(--green)}
@media (prefers-color-scheme:dark){a{color:#34d399}}
:focus-visible{outline:3px solid var(--pass);outline-offset:3px;border-radius:4px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
h1,h2,h3{font-family:var(--display);line-height:1.08;letter-spacing:-.015em;margin:0}
h2{font-size:clamp(30px,4.2vw,48px);font-weight:750}
h3{font-size:21px;font-weight:700;letter-spacing:-.005em}
p{margin:0}
.skip{position:absolute;left:-999px;top:8px;background:var(--pass);color:#1b1300;padding:8px 12px;border-radius:6px;z-index:10}
.skip:focus{left:8px}

/* Top bar */
header.top{background:var(--deep);color:#fff}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:16px;padding-bottom:16px;flex-wrap:wrap}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-family:var(--display);font-weight:750;font-size:21px;letter-spacing:-.01em}
.logo svg{width:34px;height:34px;flex:none}
nav{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
nav a{color:#cfeee0;text-decoration:none;font-size:16px}
nav a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
nav a.lang{color:#fff;border:1.5px solid rgba(255,255,255,.5);border-radius:999px;padding:2px 11px;font-weight:700;font-size:14px}
nav a.lang:hover{text-decoration:none;border-color:#fff}

/* Hero */
.hero{background:var(--deep);color:#fff;padding:40px 0 88px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:auto -10% -160px auto;width:620px;height:620px;border-radius:50%;background:radial-gradient(closest-side,rgba(52,211,153,.22),transparent);pointer-events:none}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center;position:relative}
.hero h1{font-size:clamp(40px,6.2vw,76px);font-weight:800;letter-spacing:-.03em;line-height:.98;max-width:12ch}
.hero .lead{margin-top:22px;font-size:20px;line-height:1.55;color:#d6f2e5;max-width:34em}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 22px;border-radius:14px;font-weight:700;text-decoration:none;font-size:17px;border:2px solid transparent}
.btn.primary{background:var(--pass);color:#1b1300}
.btn.primary:hover{background:#fde68a}
.btn.ghost{color:#d6f2e5;border-color:rgba(214,242,229,.35)}
.btn svg{width:20px;height:20px}
.hero .note{margin-top:16px;color:#a9d9c4;font-size:15px}

/* The live question */
.q{background:var(--paper);color:var(--ink);border-radius:22px;padding:24px 24px 20px;box-shadow:0 30px 60px -20px rgba(0,0,0,.45);position:relative}
.q-meta{font-size:14px;color:var(--slate);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.q-prompt{font-family:var(--display);font-weight:650;font-size:22px;line-height:1.25;letter-spacing:-.01em;margin:12px 0 16px}
.q-hint{font-size:15px;color:var(--slate);margin-bottom:10px}
.q ol{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.opt{width:100%;display:grid;grid-template-columns:34px 1fr auto;align-items:center;gap:12px;text-align:left;font:inherit;color:inherit;background:var(--ground);border:1.5px solid var(--line);border-radius:12px;padding:9px 12px;cursor:pointer;position:relative;overflow:hidden}
.opt:hover:not([disabled]){border-color:var(--green)}
.opt[disabled]{cursor:default}
.bubble{width:30px;height:30px;border-radius:50%;border:2px solid var(--slate);display:grid;place-items:center;font-weight:700;font-size:14px;position:relative;z-index:1;background:var(--paper)}
.opt .label{position:relative;z-index:1}
.opt .pct{position:relative;z-index:1;font-weight:700;font-variant-numeric:tabular-nums;opacity:0}
.opt .bar{position:absolute;inset:0 auto 0 0;width:0;background:var(--mint);transition:width .9s cubic-bezier(.2,.8,.2,1)}
.q.done .opt .pct{opacity:1}
.q.done .opt.trap .bar{background:var(--trap-soft)}
.q.done .opt.trap .bubble{border-color:var(--trap);color:var(--trap)}
.q.done .opt.correct{border-color:var(--green)}
.q.done .opt.correct .bubble{background:var(--green);border-color:var(--green);color:#fff}
.q.done .opt.picked{box-shadow:0 0 0 3px var(--pass)}
.q-verdict{margin-top:14px;font-size:16px;min-height:3.2em}
.q-verdict strong{font-weight:700}
.q-source{margin-top:10px;font-size:13px;color:var(--slate)}

/* Sections */
section{padding:88px 0}
section.alt{background:var(--paper);border-block:1px solid var(--line)}
.sub{margin-top:14px;font-size:19px;color:var(--slate);max-width:40em}

/* Sessions timeline */
.years{display:grid;grid-template-columns:repeat(auto-fit,minmax(92px,1fr));gap:10px;margin-top:40px}
.year{border-top:4px solid var(--green);padding-top:10px}
.year b{display:block;font-family:var(--display);font-size:28px;font-weight:750;letter-spacing:-.02em}
.year span{display:block;font-size:15px;color:var(--slate)}
.year.pl-only{border-top-color:var(--line)}
.year.pl-only b{color:var(--slate)}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:28px 40px;margin-top:44px}
.facts p{font-size:17px;color:var(--slate)}
.facts strong{display:block;color:var(--ink);font-size:18px;margin-bottom:4px}

/* Study loop */
.loop{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;margin-top:48px;counter-reset:step}
.step{padding:0 24px 0 0;position:relative}
.step::before{counter-increment:step;content:counter(step);display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:var(--green);color:#fff;font-family:var(--display);font-weight:750;font-size:20px;margin-bottom:18px}
.step::after{content:"";position:absolute;top:22px;left:52px;right:8px;border-top:2px dashed var(--line)}
.step:last-child::after{display:none}
.step p{margin-top:10px;color:var(--slate)}

/* Pricing */
.plans{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:44px;border:1.5px solid var(--line);border-radius:22px;overflow:hidden;background:var(--paper)}
.plan{padding:28px 24px;border-left:1.5px solid var(--line)}
.plan:first-child{border-left:0}
.plan .price{font-family:var(--display);font-size:46px;font-weight:800;letter-spacing:-.03em;margin:10px 0 2px;line-height:1}
.plan .price small{font-size:20px;font-weight:650;letter-spacing:0}
.plan p{color:var(--slate);font-size:16px}
.plan.best{background:var(--deep);color:#fff;border-left-color:var(--deep)}
.plan.best p{color:#cfeee0}
.plan .tag{display:inline-block;margin-top:14px;background:var(--pass);color:#1b1300;font-weight:700;font-size:14px;padding:3px 10px;border-radius:999px}
.launch{margin-top:22px;font-size:17px}
.fine{margin-top:12px;font-size:15px;color:var(--slate);max-width:52em}

/* FAQ */
.faq{margin-top:36px;max-width:820px}
details{border-bottom:1.5px solid var(--line)}
summary{cursor:pointer;list-style:none;padding:20px 40px 20px 0;font-family:var(--display);font-weight:650;font-size:20px;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:6px;top:14px;font-size:30px;font-weight:400;color:var(--green);transition:transform .2s}
details[open] summary::after{transform:rotate(45deg)}
details p{padding:0 0 22px;color:var(--slate);max-width:44em}

/* Closing download */
.download{background:var(--deep);color:#fff;text-align:left}
.download .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.download h2{max-width:16ch}
.download .sub{color:#cfeee0}
.download .soon{color:#a9d9c4;font-size:15px;margin-top:12px}

/* Footer */
footer{padding:40px 0 56px;color:var(--slate);font-size:15px}
footer .links{display:flex;flex-wrap:wrap;gap:8px 22px;margin-bottom:12px}
footer a{color:var(--ink)}

/* Legal pages */
.doc{max-width:760px;padding:48px 0 32px}
.doc h1{font-size:clamp(32px,5vw,46px);font-weight:800;margin-bottom:12px}
.doc h2{font-size:24px;margin:34px 0 10px;font-weight:700}
.doc p,.doc li{color:var(--ink)}
.doc p+p{margin-top:12px}
.doc em{color:var(--slate)}
.todo{background:#fff4db;color:#6b3305;padding:0 4px;border-radius:4px}

@media (max-width:900px){
  .hero .wrap{grid-template-columns:1fr;gap:40px}
  .loop{grid-template-columns:1fr 1fr;gap:36px 0}
  .step:nth-child(2)::after{display:none}
  .plans{grid-template-columns:1fr 1fr}
  .plan:nth-child(3){border-left:0}
  .plan:nth-child(n+3){border-top:1.5px solid var(--line)}
}
@media (max-width:560px){
  body{font-size:16px}
  section{padding:64px 0}
  .hero{padding:28px 0 64px}
  .q{padding:20px 16px 16px}
  .q-prompt{font-size:20px}
  .loop{grid-template-columns:1fr}
  .step::after{display:none}
  .plans{grid-template-columns:1fr}
  .plan{border-left:0;border-top:1.5px solid var(--line)}
  .plan:first-child{border-top:0}
  nav{gap:14px}
  nav a{font-size:15px}
}

/* Feature rows with small app mock-ups (built in HTML, no screenshots) */
.features{margin-top:56px;display:grid;gap:72px}
.feature{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}
.feature:nth-child(even) .feature-text{order:2}
.feature h3{font-size:clamp(24px,2.6vw,30px);font-weight:750;letter-spacing:-.015em}
.feature .feature-text>p{margin-top:12px;color:var(--slate);font-size:18px;max-width:34em}
.feature ul{margin:16px 0 0;padding:0;list-style:none;display:grid;gap:8px}
.feature li{padding-left:26px;position:relative}
.feature li::before{content:"";position:absolute;left:2px;top:.55em;width:12px;height:12px;border-radius:50%;border:2.5px solid var(--green)}
.premium{display:inline-block;vertical-align:middle;margin-left:10px;background:var(--pass);color:#1b1300;font-family:var(--text);font-size:13px;font-weight:700;letter-spacing:0;padding:2px 9px;border-radius:999px}
.mock{background:var(--paper);border:1.5px solid var(--line);border-radius:24px;padding:22px;box-shadow:0 24px 48px -28px rgba(5,59,46,.45);font-size:15px}
.mock-title{font-family:var(--display);font-weight:700;font-size:18px;display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:14px}
.mock-title small{font-family:var(--text);font-weight:400;font-size:14px;color:var(--slate)}
.row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 14px;border-radius:14px;background:var(--ground);margin-top:8px}
.row b{font-weight:700}
.row span{color:var(--slate);font-size:14px}
.chip{display:inline-block;padding:3px 10px;border-radius:999px;font-size:13px;font-weight:700;white-space:nowrap}
.chip.ok{background:var(--mint);color:#064e3b}
.chip.no{background:#fdf0e1;color:#8a3b06}
.chip.new{background:var(--line);color:var(--slate)}
@media (prefers-color-scheme:dark){.chip.ok{color:#a7f3d0}.chip.no{background:#3a260f;color:#fbbf77}}
.timer{display:flex;justify-content:space-between;align-items:center;background:var(--deep);color:#fff;border-radius:14px;padding:12px 16px}
.timer b{font-family:var(--display);font-size:26px;font-variant-numeric:tabular-nums;letter-spacing:.01em}
.grid-q{display:grid;grid-template-columns:repeat(10,1fr);gap:6px;margin-top:14px}
.grid-q i{aspect-ratio:1;border-radius:7px;background:var(--ground);border:1.5px solid var(--line);font-style:normal;font-size:11px;display:grid;place-items:center;color:var(--slate)}
.grid-q i.a{background:#2563eb;border-color:#2563eb;color:#fff}
.grid-q i.f{background:var(--pass);border-color:var(--pass);color:#1b1300}
.grid-q i.c{border:2.5px solid var(--ink);color:var(--ink);font-weight:700}
.mock-btn{margin-top:14px;display:block;text-align:center;background:var(--green);color:#fff;font-weight:700;border-radius:12px;padding:11px}
.score{display:flex;align-items:center;gap:18px}
.ring{--p:62;width:104px;height:104px;border-radius:50%;flex:none;background:conic-gradient(var(--green) calc(var(--p)*1%),var(--line) 0);display:grid;place-items:center}
.ring b{width:80px;height:80px;border-radius:50%;background:var(--paper);display:grid;place-items:center;font-family:var(--display);font-size:26px;font-weight:800}
.trend{position:relative;display:flex;align-items:flex-end;gap:10px;height:110px;margin-top:20px;padding-top:6px}
.trend i{flex:1;border-radius:6px 6px 0 0;background:var(--mint)}
.trend i.pass{background:var(--green)}
.trend::after{content:"";position:absolute;left:0;right:0;bottom:56%;border-top:2px dashed var(--trap)}
.trend-legend{margin-top:8px;font-size:13px;color:var(--slate)}
.search{display:flex;align-items:center;gap:10px;border:1.5px solid var(--line);border-radius:12px;padding:10px 12px;color:var(--slate)}
.search svg{width:18px;height:18px;flex:none}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.chips span{border:1.5px solid var(--line);border-radius:999px;padding:4px 11px;font-size:14px}
.chips span.on{background:var(--deep);border-color:var(--deep);color:#fff}
.qrow{margin-top:14px;padding:14px;border-radius:14px;background:var(--ground)}
.qrow p{font-weight:700}
.qrow small{display:block;margin-top:6px;color:var(--green);font-weight:700}
.tabs{display:flex;gap:6px;background:var(--ground);padding:5px;border-radius:12px}
.tabs span{flex:1;text-align:center;padding:8px 6px;border-radius:9px;font-size:14px}
.tabs span.on{background:var(--paper);font-weight:700;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.tabs em{font-style:normal;color:var(--slate);margin-left:4px}
.heat{display:grid;grid-template-columns:repeat(14,1fr);gap:4px;margin-top:6px}
.heat i{aspect-ratio:1;border-radius:4px;background:var(--line)}
.heat i.l1{background:#a7f3d0}.heat i.l2{background:#34d399}.heat i.l3{background:#047857}
.cover{display:flex;height:14px;border-radius:999px;overflow:hidden;margin-top:16px}
.cover i{display:block}
.cover-legend{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:8px;font-size:13px;color:var(--slate)}
.cover-legend b{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px;vertical-align:-1px}
.more{margin-top:72px;display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:26px 40px;border-top:1.5px solid var(--line);padding-top:36px}
.more p{color:var(--slate)}
.more strong{display:block;color:var(--ink);font-size:18px;margin-bottom:4px}
@media (max-width:900px){
  .feature{grid-template-columns:1fr;gap:28px}
  .feature:nth-child(even) .feature-text{order:0}
}

/* Sticky top bar: always visible while scrolling; anchors land below it */
html{scroll-padding-top:84px}
header.top{position:sticky;top:0;z-index:20;box-shadow:0 1px 0 rgba(255,255,255,.08),0 8px 24px -16px rgba(0,0,0,.5)}
@media (max-width:700px){
  html{scroll-padding-top:110px}
  header.top .wrap{padding-top:10px;padding-bottom:8px;gap:6px}
  nav{flex-wrap:nowrap;overflow-x:auto;max-width:100%;padding-bottom:4px;scrollbar-width:none;gap:16px}
  nav::-webkit-scrollbar{display:none}
  nav a{white-space:nowrap}
}

/* About and contact */
.about{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px;margin-top:40px;align-items:start}
.about-text p{font-size:18px;color:var(--slate);max-width:36em}
.about-text p+p{margin-top:14px}
.about-text strong{color:var(--ink)}
.principles{margin:22px 0 0;padding:0;list-style:none;display:grid;gap:10px}
.principles li{padding-left:26px;position:relative}
.principles li::before{content:"";position:absolute;left:2px;top:.55em;width:12px;height:12px;border-radius:50%;background:var(--green)}
.contact-card{background:var(--deep);color:#fff;border-radius:24px;padding:28px}
.contact-card h3{font-size:24px}
.contact-card a{color:var(--pass)}
.contact-card .mail{display:inline-block;margin-top:14px;font-family:var(--display);font-size:clamp(22px,2.4vw,28px);font-weight:750;letter-spacing:-.01em;word-break:break-all}
.contact-card p{color:#cfeee0;margin-top:14px}
.contact-card dl{margin:22px 0 0;padding-top:18px;border-top:1px solid rgba(255,255,255,.15);display:grid;grid-template-columns:auto 1fr;gap:6px 16px;font-size:15px}
.contact-card dt{color:#a9d9c4}
.contact-card dd{margin:0}
@media (max-width:900px){.about{grid-template-columns:1fr;gap:32px}}
@media (max-width:700px){
  header.top .wrap{position:relative}
  nav a.lang{position:absolute;right:20px;top:14px}
  nav{width:100%;padding-right:8px}
}

/* About (on its own) and contact form */
.about-solo{margin-top:24px;max-width:46em}
.contact{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px;align-items:start}
.contact-side h2{font-size:clamp(34px,4.6vw,56px);max-width:11ch}
.info{margin-top:32px;border:1.5px solid var(--line);border-radius:22px;padding:24px;display:grid;gap:22px;background:var(--paper)}
.info-item{display:grid;grid-template-columns:24px 1fr;gap:14px;align-items:start}
.info-item svg{width:24px;height:24px;color:var(--green);margin-top:2px}
.info-item span{display:block;color:var(--slate);font-size:15px}
.info-item p{font-weight:700;margin-top:2px}
.info-item p a{color:var(--ink)}
.form{background:var(--paper);border:1.5px solid var(--line);border-radius:26px;padding:30px;display:grid;gap:18px}
.form label{display:grid;gap:8px;font-weight:700;font-size:16px}
.form input,.form select,.form textarea{font:inherit;font-weight:400;color:var(--ink);background:var(--ground);border:1.5px solid var(--line);border-radius:14px;padding:13px 15px;width:100%}
.form textarea{resize:vertical;min-height:150px}
.form input::placeholder,.form textarea::placeholder{color:var(--slate);opacity:.8}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px var(--mint)}
.form .hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form .send{justify-content:center;width:100%;font-size:18px;padding:16px}
.form .send:disabled{opacity:.6;cursor:progress}
.form-status{font-size:16px;min-height:1px}
.form-status:empty{display:none}
.form-status.ok{background:var(--mint);color:#064e3b;padding:12px 14px;border-radius:12px;font-weight:700}
.form-status.error{background:var(--trap-soft);color:#991b1b;padding:12px 14px;border-radius:12px}
@media (prefers-color-scheme:dark){.form-status.ok{color:#a7f3d0}.form-status.error{color:#fca5a5}}
.form-note{font-size:14px;color:var(--slate)}
.turnstile:empty{display:none}
@media (max-width:900px){.contact{grid-template-columns:1fr;gap:36px}.form{padding:22px}}

/* Pages opened from account e-mails (confirmation, new password) */
.auth-page{max-width:560px}
.auth-page section{padding-top:8px}
.auth-icon{width:64px;height:64px;border-radius:20px;display:grid;place-items:center;margin-bottom:18px}
.auth-icon svg{width:34px;height:34px}
.auth-icon.ok{background:var(--mint);color:var(--green)}
.auth-icon.warn{background:var(--trap-soft);color:var(--trap)}
.auth-hint{color:var(--slate);font-size:15px}
.auth-form{margin-top:22px}