/* exercises.css — the catalogue page class.
   Self-contained and ROOT-ABSOLUTE on purpose: docs.css reaches its font and logo with ../,
   which is correct from /docs/ and wrong from /cwiczenia/<slug>/ two levels down.
   Same tokens, same AA-verified pairings as docs.css. Shipped content-addressed. */

@font-face{
  font-family:'Space Grotesk';
  font-style:normal;font-weight:300 700;font-display:optional;
  src:url('/fonts/space-grotesk-latin-wght-normal.woff2') format('woff2-variations');
  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:'Space Grotesk';
  font-style:normal;font-weight:300 700;font-display:optional;
  src:url('/fonts/space-grotesk-latin-ext-wght-normal.woff2') format('woff2-variations');
  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{
  color-scheme:dark;
  --bg:#0C0E12; --bg-2:#141820; --ink:#F3F1EC; --text:#C9CED8; --mute:#9AA3B2;
  --line:#242A34; --line-2:#2A3140; --line-hi:#3A4250;
  --brand:#F04A25; --brand-ink:#1A0A06; --ok:#3ADE9E;
  --hover:rgba(255,255,255,.03);
  --logo:url('/img/logo.png');
  --display:'Space Grotesk',system-ui,sans-serif;
  --sans:system-ui,-apple-system,"Segoe UI",sans-serif;
  --pad:clamp(1.1rem,4vw,2rem);
}
@media (prefers-color-scheme: light){
  :root:not([data-theme="dark"]){
    color-scheme:light;
    --bg:#FBFAF8; --bg-2:#F2F1ED; --ink:#14171D; --text:#2E3440; --mute:#5C6472;
    --line:#E0DFDA; --line-2:#D8D6D0; --line-hi:#BFBCB4;
    --brand:#C2381A; --brand-ink:#FFFFFF; --ok:#0E7A54;
    --hover:rgba(0,0,0,.03);
    --logo:url('/img/logo-light.png');
  }
}
:root[data-theme="light"]{
  color-scheme:light;
  --bg:#FBFAF8; --bg-2:#F2F1ED; --ink:#14171D; --text:#2E3440; --mute:#5C6472;
  --line:#E0DFDA; --line-2:#D8D6D0; --line-hi:#BFBCB4;
  --brand:#C2381A; --brand-ink:#FFFFFF; --ok:#0E7A54;
  --hover:rgba(0,0,0,.03);
  --logo:url('/img/logo-light.png');
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:5rem}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand)}
h1,h2,h3{font-family:var(--display);letter-spacing:-.02em;line-height:1.12;text-wrap:balance}
h1{font-size:clamp(1.75rem,3.6vw,2.6rem);margin:.35rem 0 0}
h2{font-size:1.3rem;margin:0 0 .8rem}
p,li{color:var(--text)}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}

header{
  position:sticky;top:0;z-index:20;height:64px;
  background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line);
}
.nav{max-width:1120px;margin:0 auto;padding:0 var(--pad);height:64px;display:flex;align-items:center;gap:1.2rem}
.mark{display:inline-flex;align-items:center;text-decoration:none}
.mark .logo{display:block;width:188px;height:20px;background:var(--logo) left center/contain no-repeat}
@media (max-width:479px){.mark .logo{width:169px;height:18px}}
.nav nav{margin-left:auto;display:flex;gap:1.1rem;align-items:center}
.nav nav a{color:var(--mute);text-decoration:none;font-size:.92rem}
.nav nav a:hover{color:var(--ink)}
/* At 375px the Polish chrome wants 169px of logo plus three links and their gaps: 429px of
   content in 345px of room, so the last link ended up off-screen and unreachable. Measured.
   The docs link gives way and is repeated in the footer, which wraps. */
@media (max-width:600px){.nav nav a.nav-docs{display:none}}

main{max-width:1120px;margin:0 auto;padding:1.7rem var(--pad) 4.5rem}
.crumb{font-size:.85rem;color:var(--mute);margin:0;line-height:1.5}
.crumb a{color:var(--mute);text-decoration:none}
.crumb a:hover{color:var(--ink)}
.intro{color:var(--mute);font-size:1.02rem;margin:.65rem 0 0;max-width:62ch}

/* ---------- the demo ----------
   THE PLATE IS WHITE IN BOTH THEMES, ON PURPOSE. GymVisual draws light-grey figures with red
   highlights on white, and the MP4s carry an opaque white background. On a dark plate a video
   was a bright rectangle dropped into a dark page. White is the background this artwork was
   drawn for, so the plate is a lightbox and the page keeps its dark chrome around it.

   THE WORDMARK IS BEHIND THE MEDIA, not on top of it. `mix-blend-mode:multiply` makes a
   frame's white pixels transparent against the plate, so the mark underneath shows THROUGH the
   video and through the transparent illustrations alike. `isolation:isolate` keeps that blend
   inside the plate instead of reaching the page background. */
.hero{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:1.5rem;align-items:start;margin-top:1.5rem}
.shot{margin:0;min-width:0}
.plate{
  position:relative;isolation:isolate;overflow:hidden;
  border:1px solid var(--line-2);border-radius:18px;background:#fff;
}
.plate::before{
  content:"";position:absolute;inset:14% 8%;z-index:0;
  background:url('/img/logo-light.png') center/contain no-repeat;
  opacity:.11;
}
.plate .frame{position:relative;z-index:1;display:block;width:100%;height:auto;mix-blend-mode:multiply}
.shot figcaption{color:var(--mute);font-size:.78rem;margin:.55rem 0 0}

.side{display:flex;flex-direction:column;gap:1rem;min-width:0}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:.5rem;margin:0;padding:0;list-style:none}
.facts li{border:1px solid var(--line);border-radius:12px;padding:.55rem .75rem;background:var(--bg-2);margin:0;min-width:0}
.facts b{display:block;color:var(--mute);font-size:.68rem;text-transform:uppercase;letter-spacing:.07em;font-weight:600}
.facts span{color:var(--ink);font-size:.93rem;overflow-wrap:anywhere}
.muscle-list{margin:0;border-top:1px solid var(--line);padding-top:.9rem}
.muscle-list dt{color:var(--mute);font-size:.68rem;text-transform:uppercase;letter-spacing:.07em;font-weight:600;margin-top:.7rem}
.muscle-list dt:first-child{margin-top:0}
.muscle-list dd{margin:.2rem 0 0;color:var(--ink);font-size:.95rem}

.cta{
  display:block;text-align:center;background:var(--brand);color:var(--brand-ink);
  text-decoration:none;font-weight:600;border-radius:999px;padding:.72rem 1.3rem;
}
.cta:hover{filter:brightness(1.07)}

/* ---------- steps beside the muscle map ---------- */
.detail{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:1.5rem 2rem;align-items:start;margin-top:2.6rem}
.steps h2,.map h2,.more h2{font-size:1.15rem;color:var(--ink);text-transform:uppercase;letter-spacing:.06em}
.steps ol{margin:0;padding:0;list-style:none;counter-reset:s}
.steps li{
  counter-increment:s;position:relative;padding:.1rem 0 1rem 2.4rem;
  border-left:1px solid var(--line);margin-left:.8rem;
}
.steps li:last-child{border-left-color:transparent;padding-bottom:0}
.steps li::before{
  content:counter(s);position:absolute;left:-.85rem;top:0;
  width:1.7rem;height:1.7rem;border-radius:50%;
  background:var(--bg-2);border:1px solid var(--line-hi);color:var(--mute);
  font-size:.78rem;font-weight:600;display:grid;place-items:center;
}
.map img{border:1px solid var(--line-2);border-radius:16px;background:var(--bg-2);width:100%}
@media (min-width:861px){.map{position:sticky;top:5rem}}

/* ---------- related ---------- */
.more{margin-top:2.8rem}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:.65rem;padding:0;margin:0;list-style:none}
.grid li{margin:0;min-width:0}
.grid a{
  display:block;border:1px solid var(--line);border-radius:12px;padding:.7rem .9rem;
  background:var(--bg-2);color:var(--ink);text-decoration:none;font-size:.94rem;line-height:1.35;
  transition:border-color .15s,background .15s;
}
.grid a:hover{border-color:var(--line-hi);background:var(--hover)}
.grid a small{display:block;color:var(--mute);font-size:.76rem;margin-top:.2rem}
.more .cta,.grid+p .cta{display:inline-block;margin-top:1.6rem}

@media (max-width:860px){
  .hero,.detail{grid-template-columns:minmax(0,1fr)}
  .detail{margin-top:2.2rem;gap:2rem}
}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);margin-top:3.5rem}
.foot{max-width:1120px;margin:0 auto;padding:1.6rem var(--pad) 2.6rem;display:flex;flex-direction:column;gap:.9rem}
.foot nav{display:flex;gap:1.1rem;flex-wrap:wrap}
.foot a{color:var(--mute);text-decoration:none;font-size:.9rem}
.foot a:hover{color:var(--ink)}
.foot .langs a{font-size:.84rem}
.foot .credit{color:var(--mute);font-size:.78rem;margin:0}