/* BAUHAUS SPIELPLATZ — site 16/25
   Palette: canvas #F2E8DC / red #D93829 / blue #2350A8 / yellow #F2B705 / black #141414
   Contrast rules learned from audit: white/canvas text on red or blue; black text on
   yellow or canvas; never yellow text on canvas, never black text on blue. */

:root{
  --canvas:#F2E8DC;
  --red:#D93829;
  --blue:#2350A8;
  --yellow:#F2B705;
  --black:#141414;
  --canvas-dim:#e6d9c7;
  /* --red measures 3.82:1 on canvas — fine as a fill/graphic (3:1 non-text
     floor) but fails AA for small text. --red-text is a darkened variant
     (4.82:1) used everywhere red sits as small caption/label type on canvas,
     found and fixed in the pass-3 contrast re-audit. */
  --red-text:#BE2E20;
  --ease-out: cubic-bezier(.16,.84,.44,1);
  --ease-back: cubic-bezier(.34,1.56,.64,1);
  --ease-snap: cubic-bezier(.65,0,.35,1);
}

/* visually-hidden but screen-reader-accessible — for content conveyed only
   through decorative aria-hidden display type, and for the live-region
   announcer that narrates Reset/Zufall/poster actions. */
.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;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
@media (prefers-reduced-motion:reduce){ html{scroll-behavior:auto;} }

body{
  margin:0;
  background:var(--canvas);
  color:var(--black);
  font-family:'Jost',sans-serif;
  font-weight:400;
  line-height:1.5;
  overflow-x:hidden;
  position:relative;
}

/* paper grain overlay — subtle screen-printed texture */
body::before{
  content:'';
  position:fixed; inset:0;
  pointer-events:none;
  z-index:999;
  opacity:.05;
  mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

img,svg{display:block;max-width:100%;}
a{color:inherit;}
button{font-family:inherit;}
h1,h2,h3,p{margin:0;}

.skip{
  position:absolute; left:-999px; top:0;
  background:var(--black); color:var(--canvas); padding:.8em 1.2em;
  z-index:1000; font-weight:600; letter-spacing:.08em;
}
.skip:focus{left:1em; top:1em;}

:focus-visible{
  outline:3px solid var(--blue);
  outline-offset:3px;
}

.wrap{max-width:1320px; margin:0 auto; padding:0 clamp(20px,4vw,56px);}

/* ---------- topbar ---------- */
.topbar{
  position:sticky; top:0; z-index:80;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding:16px clamp(20px,4vw,40px);
  background:rgba(242,232,220,.86);
  backdrop-filter:blur(6px);
  border-bottom:2px solid var(--black);
}
.brand{display:flex; align-items:center; gap:10px; text-decoration:none; color:var(--black);}
.brand-mark{width:26px; height:26px; position:relative; flex:none;}
.brand-mark i{position:absolute; display:block;}
.brand-mark i:nth-child(1){width:13px;height:13px;border-radius:50%;background:var(--red);left:0;top:0;}
.brand-mark i:nth-child(2){width:0;height:0;border-left:7px solid transparent;border-right:7px solid transparent;border-bottom:12px solid var(--yellow);right:0;top:0;}
.brand-mark i:nth-child(3){width:12px;height:9px;background:var(--blue);left:3px;bottom:0;}
.brand-word{font-weight:700; letter-spacing:.14em; font-size:14px; text-transform:uppercase;}
.topnav{display:flex; gap:clamp(14px,2vw,28px); list-style:none;}
.topnav a{
  font-size:12px; font-weight:600; letter-spacing:.14em; text-transform:uppercase;
  text-decoration:none; padding:4px 2px; position:relative;
}
.topnav a::after{
  content:''; position:absolute; left:0; bottom:-2px; width:100%; height:2px;
  background:var(--red); transform:scaleX(0); transform-origin:left;
  transition:transform .22s var(--ease-out);
}
.topnav a:hover::after,.topnav a:focus-visible::after{transform:scaleX(1);}
.topbar-tag{
  font-size:11px; font-weight:600; letter-spacing:.1em;
  border:1.5px solid var(--black); border-radius:999px; padding:4px 10px;
  flex:none;
}
@media (max-width:720px){
  .topbar{ flex-wrap:wrap; row-gap:10px; }
  .topnav{
    order:3; flex-basis:100%; width:100%;
    gap:18px; overflow-x:auto; padding-top:10px;
    border-top:1px solid rgba(20,20,20,.14);
    -webkit-overflow-scrolling:touch;
  }
  .topnav a{ white-space:nowrap; }
}

/* ---------- hero / spielplatz ---------- */
.hero{
  position:relative;
  padding:clamp(28px,5vw,56px) 0 8px;
  display:flex; flex-direction:column; gap:22px;
}
.hero-head{ max-width:1320px; margin:0 auto; width:100%; padding:0 clamp(20px,4vw,56px); }
.kicker{
  font-size:12px; font-weight:600; letter-spacing:.22em; text-transform:uppercase;
  color:var(--red-text); margin-bottom:14px;
}
.hero-title{
  font-size:clamp(48px,10vw,132px);
  font-weight:800;
  letter-spacing:-.01em;
  line-height:.86;
  text-transform:uppercase;
  margin:0 0 18px;
}
.hero-sub{
  max-width:56ch;
  font-size:clamp(15px,1.6vw,19px);
  color:#3a352d;
  margin-bottom:22px;
}
.hero-controls{display:flex; align-items:center; gap:18px; flex-wrap:wrap;}
.hero-hint{font-size:12px; letter-spacing:.03em; color:#6b6255; flex:1 1 220px;}
.hero-hint kbd{
  font-family:inherit; border:1px solid #9a8f7c; border-radius:4px; padding:0 5px;
  font-size:11px;
}

.stamp{
  cursor:pointer; border:none; font-family:inherit;
  font-weight:700; text-transform:uppercase; letter-spacing:.08em;
  text-align:center; line-height:1.15;
  padding:14px 22px;
  border-radius:2px;
  transform:rotate(-2deg);
  box-shadow:6px 6px 0 var(--black);
  transition:transform .18s var(--ease-out), box-shadow .18s var(--ease-out);
}
.stamp:hover{ transform:rotate(-2deg) translate(-2px,-2px); box-shadow:8px 8px 0 var(--black); }
.stamp:active{ transform:rotate(-2deg) translate(4px,4px) scale(.98); box-shadow:2px 2px 0 var(--black); }
.stamp--reset{ background:var(--red); color:#fff; font-size:13px; }
.stamp--zufall{ background:var(--yellow); color:var(--black); font-size:14px; transform:rotate(2deg); }
.stamp--zufall:hover{ transform:rotate(2deg) translate(-2px,-2px); }
.stamp--zufall:active{ transform:rotate(2deg) translate(4px,4px) scale(.98); }

/* click "thud" — a literal rubber-stamp squash-and-settle on release,
   layered on top of the hover/active states above */
.stamp--reset.thud{ animation:thudNeg2 .34s var(--ease-back); }
.stamp--zufall.thud{ animation:thudPos2 .34s var(--ease-back); }
@keyframes thudNeg2{
  0%{ transform:rotate(-2deg) scale(.92); }
  55%{ transform:rotate(-2deg) scale(1.06); }
  100%{ transform:rotate(-2deg) scale(1); }
}
@keyframes thudPos2{
  0%{ transform:rotate(2deg) scale(.92); }
  55%{ transform:rotate(2deg) scale(1.06); }
  100%{ transform:rotate(2deg) scale(1); }
}

/* ---------- stage ---------- */
.stage{
  position:relative;
  width:100%;
  height:min(58vh,600px);
  min-height:400px;
  margin-top:6px;
  border-top:2px solid var(--black);
  overflow:hidden;
  touch-action:none;
  background:
    linear-gradient(var(--black) 1px, transparent 1px) 0 0/100% 25%,
    var(--canvas);
  background-blend-mode:normal;
  /* hand-rolled crosshair cursor — the precision-drafting-tool feel over
     empty canvas; shapes themselves override this with grab/grabbing */
  cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='22'%3E%3Ccircle cx='11' cy='11' r='6.5' fill='none' stroke='%23141414' stroke-width='1.5'/%3E%3Cline x1='11' y1='0' x2='11' y2='5' stroke='%23141414' stroke-width='1.5'/%3E%3Cline x1='11' y1='17' x2='11' y2='22' stroke='%23141414' stroke-width='1.5'/%3E%3Cline x1='0' y1='11' x2='5' y2='11' stroke='%23141414' stroke-width='1.5'/%3E%3Cline x1='17' y1='11' x2='22' y2='11' stroke='%23141414' stroke-width='1.5'/%3E%3C/svg%3E") 11 11, crosshair;
}
.stage::after{ /* faint baseline grid, decorative */
  content:'';
  position:absolute; inset:0;
  background-image:linear-gradient(90deg, rgba(20,20,20,.05) 1px, transparent 1px);
  background-size:8.333% 100%;
  pointer-events:none;
}

.shape{
  position:absolute; left:0; top:0;
  will-change:transform;
  cursor:grab;
  touch-action:none;
  --lift:9px;
}
.shape:active,.shape.dragging{cursor:grabbing; --lift:3px;}
.shape:hover:not(.dragging){ --lift:14px; }
.shape:focus-visible{ outline:3px solid var(--blue); outline-offset:6px; border-radius:4px; }
.shape:focus-visible:not(.dragging){ --lift:14px; }

/* colour comes from currentColor, so one .fill element can serve every type */
.shape[data-color="red"]{ color:var(--red); }
.shape[data-color="blue"]{ color:var(--blue); }
.shape[data-color="yellow"]{ color:var(--yellow); }
.shape[data-color="black"]{ color:var(--black); }

/* the classic Bauhaus poster shadow: a hard-edged, zero-blur offset silhouette.
   --lift (set on .shape) grows on hover/focus and shrinks while dragging, so
   the shadow itself becomes the "is this pressed?" affordance. */
.shape .fill{
  position:absolute; inset:0;
  background:currentColor;
  filter:drop-shadow(var(--lift) var(--lift) 0 var(--black));
  transition:filter .16s var(--ease-out), transform .16s var(--ease-out);
}
.shape:hover:not(.dragging) .fill{ transform:scale(1.035); }
.shape.dragging .fill{ transform:scale(.97); }
.shape[data-shape="circle"] .fill{ border-radius:50%; }
.shape[data-shape="ring"] .fill{
  background:transparent; border-radius:50%;
  border-style:solid; border-color:currentColor;
}
.shape[data-shape="triangle"] .fill{
  clip-path:polygon(50% 0%, 100% 100%, 0% 100%);
}
.shape[data-shape="rule"] .fill{ border-radius:999px; }
.shape[data-shape="arc"] svg.fill{
  position:absolute; inset:0; width:100%; height:100%;
  background:none;
  filter:drop-shadow(var(--lift) var(--lift) 0 var(--black));
  transition:filter .16s var(--ease-out), transform .16s var(--ease-out);
  transform-box:fill-box; transform-origin:50% 50%;
  overflow:visible;
}
.shape:hover:not(.dragging) svg.fill{ transform:scale(1.035); }
.shape.dragging svg.fill{ transform:scale(.97); }
.shape[data-shape="arc"] svg.fill path{ stroke:currentColor; }

/* ---------- manifesto ---------- */
.manifest{ padding:clamp(50px,7vw,96px) 0 clamp(40px,6vw,70px); }
.manifest-band{
  position:relative;
  background:var(--red);
  clip-path:polygon(0 10%, 100% 0%, 100% 90%, 0% 100%);
  padding:clamp(56px,10vw,120px) 0;
  margin-bottom:clamp(40px,6vw,64px);
  overflow:hidden;
}
.manifest-huge{
  text-align:center;
  color:var(--canvas);
  font-weight:800;
  text-transform:uppercase;
  font-size:clamp(38px,9vw,118px);
  line-height:.86;
  letter-spacing:-.01em;
  transform:rotate(-3.2deg);
  padding:0 10px;
}
.manifest-body{
  max-width:1080px; margin:0 auto; padding:0 clamp(20px,4vw,56px);
  display:grid; grid-template-columns:minmax(160px,260px) 1fr;
  gap:clamp(20px,4vw,56px); align-items:start; text-align:left;
}
.manifest-head{ padding-top:2px; }
.manifest-head .section-title{ margin-bottom:12px; }
.manifest-num{
  font-size:11px; font-weight:700; letter-spacing:.2em; text-transform:uppercase;
  color:var(--red); padding-left:2px;
}
.manifest-copy{
  border-left:3px solid var(--black); padding-left:clamp(22px,3.4vw,36px);
}
.section-title{
  font-size:clamp(28px,4vw,44px);
  font-weight:800; text-transform:uppercase; letter-spacing:-.01em;
  margin-bottom:8px;
}
.section-sub{ color:#5a5347; font-size:clamp(14px,1.6vw,17px); margin-bottom:clamp(28px,4vw,44px); }
.manifest-text{
  font-size:clamp(17px,2.1vw,22px);
  line-height:1.65;
  color:#2b2620;
  max-width:52ch;
}
.manifest-sign{
  margin-top:22px; font-size:12px; font-weight:600; letter-spacing:.18em;
  text-transform:uppercase; color:var(--blue);
}
@media (max-width:720px){
  .manifest-body{ grid-template-columns:1fr; }
  .manifest-head{ position:static; }
  .manifest-copy{ border-left:none; border-top:3px solid var(--black); padding-left:0; padding-top:20px; }
}

/* ---------- form follows function ---------- */
.form{ padding:clamp(50px,7vw,96px) 0; text-align:center; }
.toggle-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(16px,2.4vw,28px);
  max-width:1180px; margin:0 auto; padding:0 clamp(20px,4vw,56px);
  text-align:left;
}
.toggle-card{
  background:var(--canvas);
  border:2px solid var(--black);
  border-radius:4px;
  padding:24px 22px 22px;
  cursor:pointer;
  font-family:inherit;
  color:inherit;
  display:flex; flex-direction:column; gap:14px;
  transition:transform .2s var(--ease-out), box-shadow .2s var(--ease-out), background .2s;
  box-shadow:5px 5px 0 var(--black);
}
.toggle-card:hover{ transform:translate(-2px,-2px); box-shadow:7px 7px 0 var(--black); }
.toggle-card:active{ transform:translate(2px,2px); box-shadow:3px 3px 0 var(--black); }
.toggle-stage{
  position:relative; height:136px; border-bottom:2px solid var(--black);
  display:flex; align-items:flex-end; justify-content:center; overflow:hidden;
  background-image:radial-gradient(rgba(20,20,20,.1) 1.4px, transparent 1.4px);
  background-size:14px 14px;
  background-position:center;
}
.toggle-card[aria-pressed="true"] .toggle-stage{
  background-image:radial-gradient(rgba(242,232,220,.14) 1.4px, transparent 1.4px);
}
.toggle-label{ font-weight:800; letter-spacing:.04em; text-transform:uppercase; font-size:19px; }
.toggle-copy{ font-size:14px; color:#4a4438; line-height:1.5; flex:1; }
.toggle-action{
  font-size:11px; font-weight:700; letter-spacing:.16em; text-transform:uppercase;
  color:var(--red); display:flex; align-items:center; gap:6px;
}
.toggle-card[aria-pressed="true"]{ background:var(--black); }
.toggle-card[aria-pressed="true"] .toggle-label,
.toggle-card[aria-pressed="true"] .toggle-copy{ color:var(--canvas); }
.toggle-card[aria-pressed="true"] .toggle-stage{ border-color:var(--canvas); }
.toggle-card[aria-pressed="true"] .toggle-action{ color:var(--yellow); }
.toggle-card[aria-pressed="true"] .toggle-action::after{content:'✓';}

/* wheel demo */
.demo-wheel{ position:relative; display:inline-block; width:72px; height:72px; margin-bottom:4px; }
.demo-wheel .rim{
  display:block; width:100%; height:100%; border-radius:50%; border:7px solid var(--red);
  position:relative; box-sizing:border-box;
}
.demo-wheel .rim::before,.demo-wheel .rim::after{
  content:''; position:absolute; background:var(--red);
}
.demo-wheel .rim::before{ left:50%; top:2px; bottom:2px; width:3px; transform:translateX(-50%); }
.demo-wheel .rim::after{ top:50%; left:2px; right:2px; height:3px; transform:translateY(-50%); }
.demo-track{position:absolute; left:0; right:0; bottom:0; height:2px; background:var(--black);}
.toggle-card[aria-pressed="true"] .demo-track{background:var(--canvas);}
/* idle: a small continuous rock, so the card isn't dead until clicked */
.demo-wheel{ animation:wheelIdle 3.6s var(--ease-snap) infinite; }
.toggle-card[aria-pressed="true"] .demo-wheel{ animation:wheelRoll 1.6s linear infinite; }
@keyframes wheelIdle{
  0%,100%{ transform:rotate(-6deg); }
  50%{ transform:rotate(6deg); }
}
@keyframes wheelRoll{
  0%{ transform:translateX(-30px) rotate(0deg); }
  100%{ transform:translateX(30px) rotate(360deg); }
}

/* window demo */
.demo-window{ position:relative; display:inline-block; width:88px; height:96px; perspective:260px; margin-bottom:4px; }
.demo-window .frame{ position:absolute; inset:0; border:6px solid var(--blue); }
.demo-window .pane{
  position:absolute; left:0; top:0; width:50%; height:100%;
  background:var(--blue); opacity:.28;
  transform-origin:left center;
  border-right:2px solid var(--blue);
  animation:windowIdle 4.4s var(--ease-snap) infinite;
}
.toggle-card[aria-pressed="true"] .demo-window .pane{ animation:windowOpen 1.8s var(--ease-snap) infinite; }
@keyframes windowIdle{
  0%,100%{ transform:rotateY(0deg); }
  50%{ transform:rotateY(-14deg); }
}
@keyframes windowOpen{
  0%,10%{ transform:rotateY(0deg); }
  45%,55%{ transform:rotateY(-130deg); }
  90%,100%{ transform:rotateY(0deg); }
}

/* arrow / triangle demo */
.demo-arrow{ position:relative; display:inline-block; width:96px; height:48px; margin-bottom:14px; animation:arrowIdle 2.8s var(--ease-snap) infinite; }
.demo-arrow .tri{
  position:absolute; left:0; top:50%; width:0; height:0;
  border-top:16px solid transparent; border-bottom:16px solid transparent;
  border-left:27px solid var(--yellow);
  transform:translateY(-50%);
  filter:drop-shadow(3px 3px 0 var(--black));
}
.demo-arrow .stem{
  position:absolute; left:-32px; top:50%; width:32px; height:10px;
  background:var(--yellow); transform:translateY(-50%);
}
.toggle-card[aria-pressed="true"] .demo-arrow{ animation:arrowPoint 1.1s var(--ease-out) infinite; }
@keyframes arrowIdle{
  0%,100%{ transform:translateX(0); }
  50%{ transform:translateX(5px); }
}
@keyframes arrowPoint{
  0%{ transform:translateX(0); }
  50%{ transform:translateX(14px); }
  100%{ transform:translateX(0); }
}

/* ---------- posters ---------- */
.plakate{ padding:clamp(50px,7vw,96px) 0 clamp(60px,8vw,110px); text-align:center; }
.poster-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(18px,2.4vw,30px);
  max-width:1180px; margin:0 auto; padding:0 clamp(20px,4vw,56px);
}
.poster{
  border:2px solid var(--black); background:var(--canvas);
  padding:0; cursor:pointer; font-family:inherit;
  display:flex; flex-direction:column;
  box-shadow:6px 6px 0 var(--black);
  transition:transform .2s var(--ease-out), box-shadow .2s var(--ease-out);
}
.poster:hover{ transform:translate(-3px,-3px); box-shadow:9px 9px 0 var(--black); }
.poster:active{ transform:translate(2px,2px); box-shadow:3px 3px 0 var(--black); }
.poster svg{ width:100%; height:auto; aspect-ratio:3/4; }
.poster-cta{
  font-size:11px; font-weight:700; letter-spacing:.16em; text-transform:uppercase;
  padding:11px; border-top:2px solid var(--black); background:var(--black); color:var(--yellow);
}
.poster.regen svg{ animation:posterPop .38s var(--ease-back); }
@keyframes posterPop{ 0%{ opacity:.2; transform:scale(.97); } 100%{ opacity:1; transform:scale(1); } }

/* ---------- footer ---------- */
.foot{ background:var(--black); color:var(--canvas); position:relative; overflow:hidden; }
.foot-poster{
  position:relative; padding:clamp(50px,9vw,110px) 0 clamp(30px,5vw,50px);
  display:flex; justify-content:center;
}
.foot-huge{
  font-weight:800; text-transform:uppercase; letter-spacing:-.01em;
  font-size:clamp(46px,12vw,150px); line-height:.84;
  transform:rotate(-4deg);
  color:transparent;
  -webkit-text-stroke:2px var(--canvas);
  text-align:center;
}
.foot-huge span{ color:var(--yellow); -webkit-text-stroke:0; }
.foot-bar{
  border-top:2px solid #37342c;
  padding:20px clamp(20px,4vw,56px) 28px;
  display:flex; flex-wrap:wrap; gap:12px 24px; align-items:center; justify-content:space-between;
  max-width:1320px; margin:0 auto;
}
.foot-id{ font-size:12px; letter-spacing:.04em; color:#c9bfae; }
.foot-id b{ color:var(--yellow); font-weight:700; }
.foot-nav{ display:flex; gap:20px; }
.foot-nav a{
  font-size:12px; font-weight:600; letter-spacing:.1em; text-transform:uppercase;
  text-decoration:none; color:var(--canvas); border-bottom:1px solid transparent;
  transition:border-color .18s;
}
.foot-nav a:hover,.foot-nav a:focus-visible{ border-color:var(--yellow); }

/* ---------- reveal-on-scroll ---------- */
.rv{ opacity:0; transform:translateY(22px); transition:opacity .6s var(--ease-out), transform .6s var(--ease-out); }
.rv.in{ opacity:1; transform:none; }
@media (prefers-reduced-motion:reduce){
  .rv{ opacity:1; transform:none; transition:none; }
}

/* ---------- reduced motion global ---------- */
@media (prefers-reduced-motion:reduce){
  .demo-wheel,.demo-window .pane,.demo-arrow{ animation:none !important; }
  .stamp,.toggle-card,.poster,.shape .fill,.shape svg.fill{ transition:none; }
  .stamp.thud{ animation:none !important; }
}
html.reduced .demo-wheel,
html.reduced .demo-window .pane,
html.reduced .demo-arrow{ animation:none !important; }
html.reduced .stamp.thud{ animation:none !important; }

/* ---------- responsive ---------- */
@media (max-width:900px){
  .toggle-grid,.poster-grid{ grid-template-columns:1fr; }
  .hero-controls{ gap:14px; }
}
@media (max-width:560px){
  .stage{ height:min(52vh,460px); min-height:360px; }
  .hero-hint{ order:3; flex-basis:100%; }
  .foot-bar{ flex-direction:column; align-items:flex-start; }
}