/* ============================================================
   UX Hero · student platform (app.uxhero.design)
   World: the uxhero.design Swiss poster - signal-orange field, ink, paper,
   Onest + JetBrains Mono (measurements only), hairline rules, 3px ink heads,
   no cards, no shadows, no radius. Tokens mirror Website/site by Claude/css/ux.css.
   Operate surface: same chrome and type as the site, calmer and denser.
   Used by: index.html, login.html, app.html, 404.html.
   The CRM (admin.html) and design-system.html keep styles.css - do not merge.
   ============================================================ */
:root{
  --field:#FB4A1B; --field-deep:#E63E12; --field-tint:#FFF0EA;
  --ink:#111110; --ink-2:#3A3A37; --ink-3:#6B6B66; --ink-on-field:#2B0D03; --on-ink:#BDBDB6;
  --paper:#FFFFFF; --paper-2:#F4F4F1;
  --rule:rgba(17,17,16,.14); --rule-field:rgba(17,17,16,.16); --rule-ink:rgba(255,255,255,.16);
  --err:#B42D0A; --ok:#168A4A;
  --sans:'Onest',ui-sans-serif,system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,'SF Mono',Menlo,monospace;
  --pad:clamp(20px,4vw,56px); --maxw:1680px;
  --pad-x:max(var(--pad),calc((100vw - var(--maxw)) / 2));
  --gap:clamp(12px,1.6vw,24px);
  --ease:cubic-bezier(.16,1,.3,1);
  --top-h:60px; --tab-h:58px;
  /* surfaces that stay the same in both themes: text on the orange field, the ink block (continue, flagship) */
  --on-field:#111110;
  --block:#111110; --on-block:#FFFFFF; --on-block-2:#BDBDB6; --rule-block:rgba(255,255,255,.16);
  --err-tint:#FFF5F2; --skel-hi:#EBEBE7; --hover-on-block:#FFB39E;
  color-scheme:light;
}
/* ---------- dark: an ink field with paper-ish text, the same orange. Set by the pre-paint script in <head>
   (localStorage 'uxhero-theme' = light|dark, else prefers-color-scheme); the media block covers no-JS. ---------- */
:root[data-theme="dark"]{
  --ink:#F2F1EC; --ink-2:#C9C8C1; --ink-3:#A3A29B; --on-ink:#BDBDB6;
  --paper:#111110; --paper-2:#1D1D1B;
  --field-deep:#FF6B40; --field-tint:#2A1811;
  --rule:rgba(242,241,236,.16); --rule-ink:rgba(255,255,255,.16);
  --err:#FF7B57; --ok:#43C985;
  --block:#1F1F1C; --on-block:#F2F1EC; --on-block-2:#B8B7B0; --rule-block:rgba(242,241,236,.14);
  --err-tint:#2A1510; --skel-hi:#272724;
  color-scheme:dark;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme]){
    --ink:#F2F1EC; --ink-2:#C9C8C1; --ink-3:#A3A29B; --on-ink:#BDBDB6;
    --paper:#111110; --paper-2:#1D1D1B;
    --field-deep:#FF6B40; --field-tint:#2A1811;
    --rule:rgba(242,241,236,.16); --rule-ink:rgba(255,255,255,.16);
    --err:#FF7B57; --ok:#43C985;
    --block:#1F1F1C; --on-block:#F2F1EC; --on-block-2:#B8B7B0; --rule-block:rgba(242,241,236,.14);
    --err-tint:#2A1510; --skel-hi:#272724;
    color-scheme:dark;
  }
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scrollbar-color:var(--ink) var(--paper);accent-color:var(--field);caret-color:var(--field)}
body{font-family:var(--sans);font-size:16px;line-height:1.55;color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;min-height:100svh}
::selection{background:var(--field);color:var(--on-field)}
a{color:inherit}
img{display:block;max-width:100%}
button{font:inherit;color:inherit}
[hidden]{display:none !important}
:focus-visible{outline:3px solid var(--ink);outline-offset:3px}
.on-ink :focus-visible,.top :focus-visible{outline-color:var(--on-field)}
.resume :focus-visible,.offer.flagship :focus-visible,.toast :focus-visible{outline-color:var(--field)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:-9999px;top:8px;z-index:60;background:var(--ink);color:var(--paper);padding:10px 14px;text-decoration:none}
.skip:focus{left:8px}
.ic{width:1.05em;height:1.05em;flex:none;transition:transform .3s var(--ease)}
.mono{font-family:var(--mono);font-size:12.5px;letter-spacing:.02em;font-variant-numeric:tabular-nums}
.grid12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--gap)}

/* ---------- chrome: header on the field (same as uxhero.design .top) ---------- */
.top{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:clamp(16px,3vw,40px);min-height:var(--top-h);padding:0 var(--pad-x);background:var(--field);color:var(--on-field)}
.mark{font-weight:800;font-size:19px;letter-spacing:-.03em;text-decoration:none;white-space:nowrap}
.nav{display:flex;gap:clamp(16px,2.2vw,30px);font-weight:500;font-size:15px}
.nav a,.u-link{text-decoration:none;background:linear-gradient(currentColor,currentColor) 0 100%/0 1.5px no-repeat;transition:background-size .3s var(--ease);padding-bottom:2px}
.nav a:hover,.u-link:hover,.nav a[aria-current="page"]{background-size:100% 1.5px}
.nav a[aria-current="page"]{font-weight:600}
.top-end{margin-left:auto;display:flex;align-items:center;gap:clamp(18px,2.4vw,32px);font-size:15px;min-width:0}
.who{font-family:var(--mono);font-size:12px;color:var(--ink-on-field);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:30ch}
.u-link{font-weight:600;border:0;background-color:transparent;cursor:pointer;white-space:nowrap}
/* theme switch: a square that fills when dark is on (same chip language as the course marks) */
.theme-btn{display:inline-flex;align-items:center;gap:8px;font-weight:500}
.theme-btn .sq{width:11px;height:11px;box-shadow:inset 0 0 0 1.5px currentColor;flex:none;transition:background .2s var(--ease)}
.theme-btn[aria-pressed="true"] .sq{background:currentColor}

/* mobile tab bar (the header keeps only the mark) */
.tabbar{display:none}
@media (max-width:760px){
  .top .nav,.who{display:none}
  .tabbar{position:fixed;left:0;right:0;bottom:0;z-index:30;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));background:var(--paper);border-top:1px solid var(--ink);padding-bottom:env(safe-area-inset-bottom)}
  .tabbar a{display:flex;align-items:center;justify-content:center;height:var(--tab-h);font-weight:600;font-size:13.5px;text-decoration:none;color:var(--ink-2);transition:background .2s var(--ease),color .2s var(--ease)}
  .tabbar a+a{border-left:1px solid var(--rule)}
  .tabbar a[aria-current="page"]{background:var(--field);color:var(--on-field);border-left-color:var(--field)}
  .tabbar a[aria-current="page"]+a{border-left-color:var(--field)}
}

/* ---------- buttons + links ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:52px;background:var(--ink);color:var(--paper);text-decoration:none;font-weight:600;font-size:16px;letter-spacing:-.01em;padding:14px 22px 14px 24px;border:0;border-radius:0;cursor:pointer;transition:background .25s var(--ease),color .25s var(--ease)}
.btn:hover{background:var(--field);color:var(--on-field)}
.btn:hover .ic{transform:translateX(3px)}
.btn-field{background:var(--field);color:var(--on-field)}
.btn-field:hover{background:var(--paper);color:var(--ink)}
.btn-line{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--ink)}
.btn-line:hover{background:var(--ink);color:var(--paper)}
.btn-sm{min-height:42px;font-size:14.5px;padding:10px 16px 10px 18px;gap:10px}
.btn-block{width:100%}
.btn[disabled],.btn[aria-disabled="true"]{background:var(--paper-2);color:var(--ink-3);cursor:not-allowed;box-shadow:none}
.btn.is-busy{cursor:progress}
.more{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;text-decoration:none;background:linear-gradient(var(--field),var(--field)) 0 100%/0 2px no-repeat;padding-bottom:3px;transition:background-size .35s var(--ease);border:0;background-color:transparent;cursor:pointer}
.more:hover{background-size:100% 2px}
.more:hover .ic{transform:translateX(3px)}
.more.out:hover .ic{transform:translate(2px,-2px)}
.text-btn{background:none;border:0;padding:0;cursor:pointer;font-weight:600;font-size:15px;text-decoration:underline;text-decoration-thickness:1.5px;text-underline-offset:4px}
.text-btn:hover{color:var(--field-deep)}
.text-btn[disabled]{color:var(--ink-3);text-decoration:none;cursor:default}

/* ---------- page head + section heads ---------- */
.main{padding:0 var(--pad-x) clamp(64px,7vw,104px)}
.page-head{padding:clamp(36px,5vw,68px) 0 clamp(28px,3.4vw,44px);align-items:end}
.page-head h1{grid-column:1/span 7;font-weight:800;font-size:3rem;line-height:.98;letter-spacing:-.035em;text-wrap:balance}
.page-head .lede{grid-column:9/span 4;color:var(--ink-2);max-width:42ch}
.rule-head{display:flex;justify-content:space-between;align-items:baseline;gap:16px;font-family:var(--mono);font-weight:400;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2);padding-bottom:12px;border-bottom:3px solid var(--ink)}
.rule-head.plain{border-bottom:1px solid var(--rule)}
.rule-head .mono{text-transform:none;letter-spacing:.02em;font-size:12px}
.block{margin-top:clamp(56px,6vw,88px)}
.note{margin-top:14px;font-size:14.5px;color:var(--ink-2)}
.note .text-btn{font-size:14.5px}
.chip{display:inline-block;width:.62em;height:.62em;background:var(--c,var(--ink));margin-right:.34em;vertical-align:.06em;flex:none}
.chip.soon{background:transparent;box-shadow:inset 0 0 0 2px var(--c)}
@media (max-width:1080px){
  .page-head h1,.page-head .lede{grid-column:1/-1}
  .page-head .lede{margin-top:14px}
}
@media (max-width:760px){
  .page-head h1{font-size:2.15rem}
  .main{padding-bottom:calc(var(--tab-h) + 48px + env(safe-area-inset-bottom))}
}

/* ---------- progress ---------- */
.meter{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center}
.bar{display:block;height:4px;background:var(--rule);position:relative;overflow:hidden}
.bar>i{position:absolute;left:0;top:0;bottom:0;width:0;background:var(--c,var(--ink))}
.meter .mono{white-space:nowrap;color:var(--ink-2)}

/* ---------- home: resume block (ink field, like the flagship on the site) ---------- */
.home-top{row-gap:48px;align-items:start}
.resume{grid-column:1/span 8;background:var(--block);color:var(--on-block);padding:clamp(24px,2.8vw,40px)}
.resume-name{display:flex;align-items:baseline;font-weight:800;font-size:2.25rem;line-height:1.02;letter-spacing:-.03em;text-wrap:balance}
.resume-next{margin-top:14px;font-size:17px;color:var(--on-block-2);max-width:52ch}
.resume-next b{color:var(--on-block);font-weight:600}
.resume .meter{margin-top:30px}
.resume .bar{background:var(--rule-block)}
.resume .meter .mono{color:var(--on-block)}
.resume-actions{margin-top:30px;display:flex;flex-wrap:wrap;align-items:center;gap:16px 28px}
.resume .text-btn{display:inline-flex;align-items:center;gap:8px;text-decoration:none;color:var(--on-block)}
.resume .text-btn .ic{transition:transform .3s var(--ease)}
.resume .text-btn[aria-expanded="true"] .ic{transform:rotate(180deg)}
.resume .text-btn:hover{color:var(--field)}
.toc{list-style:none;margin-top:28px;border-top:1px solid var(--rule-block)}
.toc a{display:grid;grid-template-columns:5ch minmax(0,1fr) auto;gap:14px;align-items:baseline;padding:12px 0;border-bottom:1px solid var(--rule-block);text-decoration:none;color:var(--on-block-2);transition:color .2s var(--ease)}
.toc .n{font-family:var(--mono);font-size:12px;font-variant-numeric:tabular-nums}
.toc .t{font-weight:500}
.toc .s{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase}
.toc a:hover{color:var(--on-block)}
.toc a:hover .t{text-decoration:underline;text-decoration-color:var(--field);text-decoration-thickness:2px;text-underline-offset:4px}
.toc .is-now{color:var(--on-block)}
.toc .is-now .t{font-weight:700}
.toc .is-now .s{background:var(--field);color:var(--on-field);padding:2px 6px}
.toc .is-done .s{color:var(--on-block-2)}

.side{grid-column:9/span 4}
.side-block+.side-block{margin-top:44px}
.side-when{margin-top:16px;display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12.5px}
.side-title{margin-top:8px;font-weight:700;font-size:1.2rem;line-height:1.2;letter-spacing:-.02em;text-wrap:balance}
.side-text{margin-top:8px;color:var(--ink-2);font-size:15px}
.side-block .more{margin-top:14px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--field);flex:none;animation:blink 2.4s ease-in-out infinite}
@keyframes blink{50%{opacity:.25}}
@media (max-width:1080px){.resume,.side{grid-column:1/-1}.side{display:grid;grid-template-columns:1fr 1fr;column-gap:var(--gap)}.side-block+.side-block{margin-top:0}}
@media (max-width:760px){.resume-name{font-size:1.75rem}.side{grid-template-columns:1fr}.side-block+.side-block{margin-top:40px}.toc a{grid-template-columns:4ch minmax(0,1fr) auto;gap:10px}}

/* ---------- course rows (my courses) ---------- */
.rows{list-style:none}
.row{border-bottom:1px solid var(--rule)}
.row-in{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--gap);row-gap:10px;align-items:center;padding:24px 0;position:relative;isolation:isolate;text-decoration:none;color:inherit}
a.row-in::before{content:"";position:absolute;inset:0 calc(var(--pad-x) * -1);background:var(--field-tint);z-index:-1;opacity:0;transition:opacity .25s var(--ease)}
a.row-in:hover::before{opacity:1}
a.row-in:hover .more{background-size:100% 2px}
a.row-in:hover .more .ic{transform:translateX(3px)}
.row-name{grid-column:1/span 4;display:flex;align-items:baseline;font-weight:800;font-size:1.5rem;line-height:1.1;letter-spacing:-.03em}
.row-where{grid-column:5/span 3;color:var(--ink-2);font-size:15px}
.row-where b{color:var(--ink);font-weight:600}
.row-meter{grid-column:8/span 3}
.row-go{grid-column:11/span 2;justify-self:end}
.row-go .more{margin:0}
@media (max-width:1080px){
  .row-name{grid-column:1/span 6}.row-where{grid-column:7/span 6}
  .row-meter{grid-column:1/span 8}.row-go{grid-column:9/span 4}
}
@media (max-width:760px){
  .row-in{grid-template-columns:1fr;padding:20px 0}
  .row-name,.row-where,.row-meter,.row-go{grid-column:1}
  .row-go{justify-self:start}
  .row-name{font-size:1.35rem}
}

/* detailed rows on «Курси» */
.course-row{padding:28px 0;border-bottom:1px solid var(--rule)}
.course-row .row-in{padding:0}
.course-row .specs{grid-column:5/span 3}
.course-row .row-meter{grid-column:8/span 3}
.course-row .row-go{grid-column:11/span 2;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
@media (max-width:1080px){.course-row .specs{grid-column:7/span 6}.course-row .row-meter{grid-column:1/span 8}.course-row .row-go{grid-column:9/span 4}}
@media (max-width:760px){.course-row .specs,.course-row .row-meter,.course-row .row-go{grid-column:1}.course-row .row-go{align-items:center;flex-direction:row;flex-wrap:wrap;gap:12px 24px}}

.specs{list-style:none;border-top:1px solid var(--rule)}
.specs li{font-family:var(--mono);font-size:12px;letter-spacing:.01em;padding:7px 0;border-bottom:1px solid var(--rule)}

/* ---------- offers (courses you do not own yet) - the site's ladder blocks ---------- */
.offers{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--gap);row-gap:48px;margin-top:28px;align-items:start}
.offer{grid-column:span 4;display:block;text-decoration:none;color:inherit;border-top:3px solid var(--ink);padding-top:16px;--c:var(--ink)}
.offer-name{display:flex;align-items:baseline;font-weight:800;font-size:1.6rem;line-height:1.05;letter-spacing:-.03em;text-wrap:balance;transition:color .25s var(--ease)}
.tag{font-style:normal}
.offer-name .tag{font-family:var(--mono);font-weight:400;font-size:11px;letter-spacing:.06em;text-transform:uppercase;margin-left:10px;padding:3px 7px;background:var(--field);color:var(--on-field);align-self:center}
.offer-line{margin-top:12px;color:var(--ink-2);max-width:40ch}
.offer .specs{margin-top:18px}
.offer .more{margin-top:18px}
.offer:hover .more{background-size:100% 2px}
.offer:hover .more .ic{transform:translateX(3px)}
.offer:hover .offer-name{color:var(--field-deep)}
.offer.flagship{background:var(--block);color:var(--on-block);border-top:0;padding:clamp(22px,2.4vw,32px)}
.offer.flagship .offer-line{color:var(--on-block-2)}
.offer.flagship .specs,.offer.flagship .specs li{border-color:var(--rule-block)}
.offer.flagship:hover .offer-name{color:var(--field)}
.offer.soon .offer-name{color:var(--ink-2)}
.offer.soon:hover .offer-name{color:var(--ink)}
.soon-mark{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--err);margin-bottom:10px}
@media (max-width:1080px){.offer{grid-column:span 6}}
@media (max-width:760px){.offer{grid-column:1/-1}.offers{row-gap:40px}}

/* next step (inline upsell on Головна) */
.next-row{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--gap);row-gap:10px;align-items:baseline;padding:24px 0;border-bottom:1px solid var(--rule)}
.next-row .offer-name{grid-column:1/span 4;font-size:1.5rem}
.next-row .offer-line{grid-column:5/span 4;margin:0}
.next-row .next-go{grid-column:9/span 4;justify-self:end;display:flex;flex-wrap:wrap;align-items:baseline;gap:10px 24px}
.next-row .text-btn{font-weight:500;font-size:14px;color:var(--ink-3)}
@media (max-width:1080px){.next-row .offer-name{grid-column:1/-1}.next-row .offer-line{grid-column:1/span 8}.next-row .next-go{grid-column:9/span 4}}
@media (max-width:760px){.next-row .offer-line,.next-row .next-go{grid-column:1/-1;justify-self:start}}

/* ---------- links (channels, like «Де я щодня» on the site, a notch calmer) ---------- */
.ch-list{list-style:none}
.ch-list a{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--gap);align-items:center;padding:clamp(20px,2.2vw,28px) 0;border-bottom:1px solid var(--rule);text-decoration:none;position:relative;isolation:isolate}
.ch-list a::before{content:"";position:absolute;inset:0 calc(var(--pad-x) * -1);background:var(--field);z-index:-1;clip-path:inset(0 100% 0 0);transition:clip-path .5s var(--ease)}
.ch-list a:hover::before,.ch-list a:focus-visible::before{clip-path:inset(0 0 0 0)}
.ch-list a:hover,.ch-list a:focus-visible,.ch-featured a{color:var(--on-field)}
.ch-name{grid-column:1/span 5;font-weight:800;font-size:2.25rem;line-height:1.02;letter-spacing:-.035em}
.ch-handle{grid-column:6/span 3;font-family:var(--mono);font-size:13px}
.ch-desc{grid-column:9/span 3;color:var(--ink-2);font-size:15px}
.ch-list a:hover .ch-desc{color:var(--ink-on-field)}
.ch-list .ic{grid-column:12;justify-self:end;width:26px;height:26px}
.ch-list a:hover .ic{transform:translate(3px,-3px)}
.ch-featured a{border-bottom-color:var(--rule-field)}
.ch-featured a::before{clip-path:inset(0 0 0 0);inset:0 calc(var(--pad-x) * -1) -1px}
.ch-featured .ch-desc{color:var(--ink-on-field);font-weight:500}
.ch-featured a:hover::before{background:var(--block)}
.ch-featured a:hover,.ch-featured a:focus-visible{color:var(--field)}
.ch-featured a:hover .ch-desc{color:var(--hover-on-block)}
@media (max-width:760px){
  .ch-list a{grid-template-columns:1fr auto;row-gap:6px}
  .ch-name{grid-column:1;font-size:1.75rem}
  .ch-list .ic{grid-column:2;grid-row:1}
  .ch-handle,.ch-desc{grid-column:1/-1}
}

/* ---------- profile ---------- */
.profile{row-gap:64px;align-items:start}
.p-main{grid-column:1/span 7}
.p-side{grid-column:9/span 4}
.p-side section+section{margin-top:48px}
.kv{list-style:none}
.kv li{display:grid;grid-template-columns:minmax(9ch,12ch) minmax(0,1fr);gap:16px;padding:14px 0;border-bottom:1px solid var(--rule);align-items:baseline}
.kv .k{font-size:14px;color:var(--ink-2)}
.kv .v{font-weight:600;overflow-wrap:anywhere}
.kv .v .mono{font-weight:400;color:var(--ink-2);margin-left:8px}
.kv-courses{display:grid;gap:6px}
.form{display:grid;gap:18px;margin-top:24px}
.form-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:grid;gap:8px}
.field label,.label{font-size:14px;font-weight:600}
.field .hint{font-size:13.5px;color:var(--ink-3)}
.input{width:100%;height:52px;padding:0 16px;border:1.5px solid var(--ink);border-radius:0;background:var(--paper);font:500 17px/1 var(--sans);color:var(--ink);-webkit-appearance:none;appearance:none;transition:border-color .2s var(--ease)}
.input::placeholder{color:var(--ink-3);opacity:1}
.input:focus{outline:3px solid var(--field);outline-offset:2px}
.input[aria-invalid="true"]{border-color:var(--err)}
.input[readonly]{background:var(--paper-2);font:400 14px/1 var(--mono)}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px}
.ref-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;margin-top:18px}
.ref-row .btn{min-height:52px}
@media (max-width:1080px){.p-main,.p-side{grid-column:1/-1}}
@media (max-width:560px){.form-2{grid-template-columns:1fr}}

/* ---------- messages ---------- */
.msg{font-size:15px;line-height:1.5;color:var(--ink-2)}
.msg:empty{display:none}
.msg::before{content:"";display:inline-block;width:.55em;height:.55em;background:var(--ink);margin-right:.55em;vertical-align:.06em}
.msg.err{color:var(--err)}
.msg.err::before{background:var(--err)}
.msg.ok::before{background:var(--ok)}
.msg a{color:inherit;font-weight:600;text-decoration:underline;text-decoration-thickness:1.5px;text-underline-offset:3px}
.msg .sub{display:block;margin-top:6px;color:var(--ink-2)}

/* ---------- states: skeleton, empty, error ---------- */
.skel{background:linear-gradient(90deg,var(--paper-2) 0,var(--skel-hi) 50%,var(--paper-2) 100%) 0 0/200% 100%;animation:shimmer 1.4s linear infinite}
@keyframes shimmer{to{background-position:-200% 0}}
.skel-h{height:44px;width:min(420px,70%)}
.skel-block{height:280px;grid-column:1/span 8}
.skel-side{height:180px;grid-column:9/span 4}
.skel-row{height:22px;margin:26px 0;width:60%}
@media (max-width:1080px){.skel-block,.skel-side{grid-column:1/-1}.skel-side{margin-top:24px}}
.state{padding:clamp(28px,3vw,40px) 0;border-top:3px solid var(--ink);max-width:720px}
.state h2{font-weight:800;font-size:2rem;line-height:1.05;letter-spacing:-.03em;text-wrap:balance}
.state p{margin-top:14px;color:var(--ink-2);max-width:56ch}
.state .actions{margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;gap:14px 26px}
.empty-line{padding:24px 0;border-bottom:1px solid var(--rule);color:var(--ink-2)}

/* ---------- toast ---------- */
.toast{position:fixed;left:var(--pad-x);bottom:28px;z-index:50;background:var(--ink);color:var(--paper);font-weight:600;font-size:14.5px;padding:14px 18px;display:flex;align-items:center;gap:10px;opacity:0;transform:translateY(12px);transition:opacity .2s var(--ease),transform .25s var(--ease);pointer-events:none}
.toast::before{content:"";width:.55em;height:.55em;background:var(--field)}
.toast.show{opacity:1;transform:none}
@media (max-width:760px){.toast{left:16px;right:16px;bottom:calc(var(--tab-h) + 16px + env(safe-area-inset-bottom))}}

/* ---------- login ---------- */
.auth{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--gap);min-height:calc(100svh - var(--top-h));padding:0 var(--pad-x)}
.auth-poster{grid-column:1/span 6;position:relative;background:var(--field);color:var(--on-field);margin-left:calc(var(--pad-x) * -1);padding:clamp(40px,7vh,88px) var(--gap) clamp(40px,7vh,88px) var(--pad-x);display:flex;flex-direction:column;justify-content:space-between;gap:40px;isolation:isolate;overflow:hidden}
.auth-poster .grid-lines{position:absolute;inset:0 0 0 var(--pad-x);display:grid;grid-template-columns:repeat(6,minmax(0,1fr));column-gap:var(--gap);z-index:-1;pointer-events:none}
.auth-poster .grid-lines span{border-left:1px solid var(--rule-field);transform-origin:top;animation:draw 1s var(--ease) both}
.auth-poster .grid-lines span:nth-child(2){animation-delay:.04s}.auth-poster .grid-lines span:nth-child(3){animation-delay:.08s}
.auth-poster .grid-lines span:nth-child(4){animation-delay:.12s}.auth-poster .grid-lines span:nth-child(5){animation-delay:.16s}
.auth-poster .grid-lines span:nth-child(6){animation-delay:.2s}
@keyframes draw{from{transform:scaleY(0)}to{transform:scaleY(1)}}
.auth-poster h1{font-weight:800;font-size:clamp(2.6rem,5.2vw,5rem);line-height:.93;letter-spacing:-.04em;max-width:9ch;text-wrap:balance}
.auth-poster p{max-width:34ch;color:var(--ink-on-field);font-weight:500;font-size:1.05rem}
.auth-poster .mono{color:var(--on-field);display:flex;align-items:center;gap:10px}
.auth-poster .mono .dot{background:var(--on-field)}
.auth-form{grid-column:8/span 4;align-self:center;padding:clamp(40px,7vh,88px) 0;max-width:460px;width:100%}
.auth-h{font-weight:800;font-size:2rem;line-height:1.05;letter-spacing:-.03em;text-wrap:balance}
.auth-p{margin-top:12px;color:var(--ink-2)}
.auth-p b{color:var(--ink);font-weight:600;overflow-wrap:anywhere}
.auth-form .form{margin-top:28px}
.auth-form .msg{margin-top:-2px}
.auth-alt{margin-top:28px;padding-top:18px;border-top:1px solid var(--rule);display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;font-size:15px;color:var(--ink-2)}
.auth-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 20px}
.cooldown{font-family:var(--mono);font-size:12.5px;color:var(--ink-3);font-variant-numeric:tabular-nums}

/* one real input over six drawn cells: paste, iOS/Android one-time-code autofill and password managers all hit the real input */
.otp{position:relative}
.otp input{position:absolute;inset:0;width:100%;height:100%;z-index:2;border:0;background:transparent;color:transparent;caret-color:transparent;font-size:16px;letter-spacing:0;padding:0 12px;-webkit-appearance:none;appearance:none;cursor:text}
.otp input::selection{background:transparent}
.otp input:focus{outline:none}
.otp-cells{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px}
.otp-cells span{height:64px;border:1.5px solid var(--ink);display:grid;place-items:center;font:500 28px/1 var(--mono);font-variant-numeric:tabular-nums;position:relative;transition:border-color .15s var(--ease),background .15s var(--ease)}
.otp.is-focus .otp-cells span.is-cur{outline:3px solid var(--field);outline-offset:2px}
.otp.is-focus .otp-cells span.is-cur:empty::after{content:"";width:2px;height:28px;background:var(--field);animation:caret 1s steps(1) infinite}
@keyframes caret{50%{opacity:0}}
.otp.is-err .otp-cells span{border-color:var(--err);background:var(--err-tint)}
.otp.is-busy .otp-cells span{background:var(--paper-2)}
.help{margin-top:22px;border-top:1px solid var(--rule)}
.help summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;padding:14px 0;font-weight:600;font-size:15px}
.help summary::-webkit-details-marker{display:none}
.help summary .ic{transition:transform .25s var(--ease)}
.help[open] summary .ic{transform:rotate(180deg)}
.help ul{list-style:none;padding-bottom:6px}
.help li{padding:8px 0 8px 1.2em;position:relative;color:var(--ink-2);font-size:15px}
.help li::before{content:"";position:absolute;left:0;top:.95em;width:.5em;height:.5em;background:var(--field)}
.help a{font-weight:600;color:var(--ink)}
@media (max-width:1080px){.auth-poster{grid-column:1/span 6}.auth-form{grid-column:7/span 6;padding-left:var(--gap)}}
@media (max-width:760px){
  .auth{grid-template-columns:1fr;min-height:0}
  .auth-poster{grid-column:1;margin:0 calc(var(--pad-x) * -1);padding:28px var(--pad-x) 32px;gap:18px}
  .auth-poster .grid-lines{inset:0 var(--pad-x);grid-template-columns:repeat(4,1fr)}
  .auth-poster .grid-lines span:nth-child(n+5){display:none}
  .auth-poster h1{font-size:2.6rem}
  .auth-poster p{font-size:1rem}
  .auth-poster .mono{display:none}
  .auth-form{grid-column:1;padding:32px 0 56px;max-width:none}
  .auth-h{font-size:1.65rem}
  .otp-cells span{height:56px;font-size:24px}
}

/* ---------- 404 + guest ---------- */
.poster{background:var(--field);min-height:calc(100svh - var(--top-h));display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--gap);padding:clamp(40px,8vh,96px) var(--pad-x);align-content:center;position:relative;isolation:isolate;overflow:hidden}
.poster .grid-lines{position:absolute;inset:0 var(--pad-x);display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--gap);z-index:-1;pointer-events:none}
.poster .grid-lines span{border-left:1px solid var(--rule-field)}
.poster .grid-lines span:last-child{border-right:1px solid var(--rule-field)}
.poster-copy{grid-column:1/span 8}
.poster h1{font-weight:800;font-size:clamp(2.7rem,6.6vw,6rem);line-height:.93;letter-spacing:-.04em;text-wrap:balance;max-width:12ch}
.poster p{margin-top:24px;max-width:40ch;font-size:clamp(1.05rem,1.35vw,1.2rem);color:var(--ink-on-field);font-weight:500}
.poster .actions{margin-top:36px;display:flex;flex-wrap:wrap;align-items:center;gap:18px 28px}
.poster{color:var(--on-field)}
.poster .btn{background:var(--on-field);color:#FFFFFF}
.poster .btn:hover{background:#FFFFFF;color:var(--on-field)}
.poster .code{grid-column:1/-1;font-family:var(--mono);font-size:12.5px;margin-bottom:28px}
@media (max-width:760px){.poster{align-content:start}.poster-copy{grid-column:1/-1}.poster .grid-lines{grid-template-columns:repeat(4,1fr)}.poster .grid-lines span:nth-child(n+5){display:none}.poster .grid-lines span:nth-child(4){border-right:1px solid var(--rule-field)}}

.foot{display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;padding:28px var(--pad-x) calc(28px + env(safe-area-inset-bottom));border-top:1px solid var(--rule);font-size:14px;color:var(--ink-2)}
.foot a{text-decoration:none}.foot a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:4px}

/* easter egg (Головна): spin it or click it 40 times */
.egg{display:inline-flex;color:var(--ink-3);opacity:.35;cursor:grab;user-select:none;touch-action:none;transition:opacity .2s}
.egg:hover{opacity:.9}
#snowfx{position:fixed;inset:0;pointer-events:none;z-index:9999;overflow:hidden}
.flake{position:absolute;top:-16px;background:var(--field)}
.flake:nth-child(3n){background:var(--ink)}
@keyframes snowfall{to{transform:translate(var(--dx),106vh) rotate(540deg)}}
@keyframes eggvib{0%,100%{transform:translate(0,0)}25%{transform:translate(-2px,1px)}50%{transform:translate(2px,-1px)}75%{transform:translate(-1px,-2px)}}
.eggshake .resume,.eggshake .row,.eggshake .side-block,.eggshake .page-head h1,.eggshake .next-row{animation:eggvib .32s infinite}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* профіль · сертифікат: здача фінального проєкту по курсах */
.ci{margin-top:18px;padding-top:16px;border-top:1px solid var(--rule);display:flex;flex-direction:column;gap:10px}
.ci-h{font-weight:700;font-size:15px;color:var(--ink)}
.ci-s{font-size:14px;line-height:1.5;color:var(--ink-2)}
.ci-s .mono{color:var(--ink)}
.ci-dot{display:inline-block;width:8px;height:8px;margin-right:8px;background:var(--field);vertical-align:1px}
.ci-fb{border-left:3px solid var(--field);padding:2px 0 2px 12px;font-size:14px;color:var(--ink-2)}
.ci-fb b{display:block;color:var(--ink);font-size:13px;margin-bottom:2px}
.ci-fb p{white-space:pre-wrap}
.ci-form{display:flex;flex-direction:column;gap:8px}
.ci-form .input{height:46px;font-size:15px}
.ci-form .btn{align-self:flex-start}
.ci .btn{align-self:flex-start}
.ci-open{align-self:flex-start;background:none;border:0;padding:0;font:600 14px/1.4 var(--sans);color:var(--ink);text-decoration:underline;text-decoration-color:var(--field);text-underline-offset:3px;cursor:pointer}
.ci-open:hover{color:var(--field-deep)}