/* cirKITry v9: workshop-kits page. The 3D viewer (assets/kits-viewer.js) sits in .kv-stage; the kit bar sits
   under it (not over it, as in the original full-screen version); every kit is also listed as plain HTML. */
.kv{--kit-accent:var(--orange);background:#0b0d11}
.kv-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,28rem);gap:clamp(20px,4vw,64px);align-items:end;margin-bottom:clamp(20px,3vw,36px)}
.kv-head .section-title{margin:0}
.kv-head__text{margin:0;color:var(--ink-2);font-size:var(--text-lead,1.25rem);line-height:1.5}
@media(max-width:800px){.kv-head{grid-template-columns:1fr}}

/* ---------- stage ---------- */
.kv-viewer{position:relative}
.kv-stage{position:relative;height:clamp(420px,62svh,680px);border:1px solid var(--line);border-bottom:0;border-radius:10px 10px 0 0;overflow:hidden;background:#0b0d11;isolation:isolate}
.kv-canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:pan-y;outline:none}
.kv.is-open .kv-canvas{touch-action:none}
.kv-canvas:focus-visible{box-shadow:inset 0 0 0 2px var(--orange)}
.kv-stage::after{content:'';position:absolute;inset:0;background:#0b0d11;pointer-events:none;transition:opacity .6s;z-index:3}
.kv.is-ready .kv-stage::after,.kv.kv--no3d .kv-stage::after{opacity:0}

.kv-hint{position:absolute;left:50%;bottom:76px;transform:translateX(-50%);margin:0;font:500 .8125rem/1.3 var(--font-code,monospace);color:#8b97aa;pointer-events:none;white-space:nowrap;transition:opacity .3s}
.kv-open{position:absolute;left:50%;bottom:20px;transform:translateX(-50%);z-index:2}
.kv.is-open .kv-open,.kv.is-open .kv-hint{opacity:0;pointer-events:none;visibility:hidden}

.kv-close{position:absolute;left:16px;top:16px;z-index:4;display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 16px;border:1px solid var(--line-2,#2c3546);border-radius:6px;background:#12161dee;color:var(--ink);font:600 .875rem/1 var(--font-body);opacity:0;visibility:hidden;transform:translateX(-8px);cursor:pointer}
.kv-close svg{width:16px;height:16px;transform:rotate(180deg)}
.kv-close:hover{border-color:var(--orange)}
.kv-close:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
.kv.is-open .kv-close{opacity:1;visibility:visible;transform:none}

/* parts panel: right side on wide stages, bottom sheet on narrow ones */
.kv-panel{position:absolute;right:16px;top:50%;width:300px;max-height:calc(100% - 32px);transform:translate(24px,-50%);z-index:4;display:flex;flex-direction:column;padding:18px 12px 12px;border:1px solid var(--line-2,#2c3546);border-radius:10px;background:#12161df2;opacity:0;visibility:hidden;pointer-events:none}
.kv.is-open .kv-panel{opacity:1;visibility:visible;pointer-events:auto;transform:translate(0,-50%)}
.kv-panel__title{padding:0 6px}
.kv-panel__title span{display:block;font:700 1.375rem/1.1 var(--font-display);font-stretch:var(--heading-stretch,88%);letter-spacing:var(--heading-track,-.018em);color:var(--ink)}
.kv-panel__title em{display:block;margin-top:4px;font-style:normal;font-size:.8125rem;color:var(--kit-accent)}
.kv-panel__label{margin:14px 6px 6px;padding-top:12px;border-top:1px solid var(--line);font:500 .75rem/1.2 var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:#8b97aa}
.kv-panel__parts{list-style:none;margin:0;padding:0;overflow-y:auto;border-radius:6px}
.kv-panel__parts:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
.kv-panel__parts li{display:grid;grid-template-columns:26px 1fr auto;gap:8px;align-items:center;padding:7px 8px;border-radius:6px;font-size:.875rem;line-height:1.3;color:var(--ink-2)}
.kv-panel__parts li span,.kv-panel__parts li em{font:500 .75rem/1 var(--font-code,monospace);font-style:normal;color:#8b97aa}
.kv-panel__parts li.on{background:var(--kit-accent);color:#0b0d11}
.kv-panel__parts li.on span,.kv-panel__parts li.on em{color:#0b0d11}
.kv-panel__hint{margin:10px 6px 0;font-size:.75rem;line-height:1.45;color:#8b97aa}
@media(prefers-reduced-motion:no-preference){
  .kv-close,.kv-panel{transition:opacity .35s cubic-bezier(.16,1,.3,1),transform .45s cubic-bezier(.16,1,.3,1),visibility .45s}
  /* opening: visibility flips at once (so Close can take focus); closing: it waits for the fade */
  .kv.is-open .kv-close,.kv.is-open .kv-panel{transition-property:opacity,transform}
}

.kv-tip{position:absolute;left:0;top:0;z-index:5;pointer-events:none;padding:7px 11px;border-radius:6px;white-space:nowrap;border:1px solid var(--kit-accent);background:#12161df5;font:500 .8125rem/1.2 var(--font-body);color:var(--ink);opacity:0;transition:opacity .15s}
.kv-tip em{font-style:normal;color:#8b97aa;margin-left:10px;font-family:var(--font-code,monospace)}
.kv-tip.show{opacity:1}

.kv-no3d{display:none;position:absolute;inset:0;margin:0;place-content:center;text-align:center;padding:24px;color:var(--ink-2);z-index:4}
.kv--no3d .kv-no3d{display:grid}
.kv--no3d .kv-canvas,.kv--no3d .kv-hint,.kv--no3d .kv-open{display:none}
.kv-no3d--noscript{display:grid;background:#0b0d11}

/* ---------- kit bar ---------- */
.kv-bar{position:relative;display:grid;grid-template-columns:auto minmax(180px,1.1fr) 2fr auto;gap:clamp(18px,3vw,36px);align-items:center;padding:24px 24px 22px;border:1px solid var(--line);border-radius:0 0 10px 10px;background:#12161d}
.kv-dots{position:absolute;left:0;right:0;top:-1px;display:flex;gap:2px;height:24px}
/* each segment is a 24px-tall button (WCAG 2.2 target size); only its top 4px is drawn */
.kv-dots button{flex:1;padding:0;border:0;background:none;cursor:pointer;position:relative}
.kv-dots button::before{content:'';position:absolute;left:0;right:0;top:0;height:4px;background:#232a36;transition:background-color .2s}
.kv-dots button:hover::before{background:#3a4558}
.kv-dots button.on::before{background:var(--kit-accent)}
.kv-dots button:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
.kv-idx{margin:0;font:500 .8125rem var(--font-code,monospace);color:#8b97aa}
.kv-idx b{font:700 2.6rem/1 var(--font-display);font-stretch:var(--heading-stretch,88%);color:var(--ink);margin-right:6px}
.kv-idx i{font-style:normal}
.kv-title:not(#\#){margin:0;font-size:clamp(1.5rem,2.4vw,2rem);line-height:1.05}
.kv-edition{margin:6px 0 0;font-size:.875rem;color:var(--kit-accent)}
.kv-meta{display:grid;grid-template-columns:auto auto 1fr;gap:clamp(16px,2.4vw,32px);margin:0}
.kv-meta dt{font:500 .75rem/1.2 var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:#8b97aa;margin-bottom:5px}
.kv-meta dd{margin:0;font-size:.9375rem;line-height:1.45;color:var(--ink)}
.kv-meta__wide dd{color:var(--ink-2)}
.kv-nav{display:flex;gap:8px}
.kv-nav button{width:48px;height:48px;display:grid;place-items:center;border:1px solid var(--line-2,#2c3546);border-radius:6px;background:none;color:var(--ink);cursor:pointer}
.kv-nav button:first-child svg{transform:rotate(180deg)}
.kv-nav button svg{width:18px;height:18px}
.kv-nav button:hover:not(:disabled){background:var(--kit-accent);border-color:var(--kit-accent);color:#0b0d11}
.kv-nav button:disabled{opacity:.3;cursor:default}
.kv-nav button:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
.kv-bar .kv-main,.kv-bar .kv-meta{transition:opacity .2s,transform .2s}
.kv-bar.swap .kv-main,.kv-bar.swap .kv-meta{opacity:0;transform:translateY(5px)}

@media(max-width:900px){
  .kv-stage{height:clamp(360px,56svh,520px)}
  .kv-bar{grid-template-columns:1fr auto;gap:14px 16px;padding:20px 16px 16px}
  .kv-idx{display:none}
  .kv-meta{grid-column:1 / -1;grid-row:2;grid-template-columns:auto auto;gap:10px 24px}
  .kv-meta__wide{grid-column:1 / -1}
  .kv-panel{left:10px;right:10px;width:auto;top:auto;bottom:10px;max-height:46%;transform:translateY(20px);padding-top:14px}
  .kv.is-open .kv-panel{transform:none}
  .kv-panel__title span{font-size:1.15rem}
  .kv-panel__hint{display:none}
  .kv-panel__parts li{padding:5px 8px}
  .kv-close{left:10px;top:10px}
  .kv-hint{bottom:80px;white-space:normal;width:calc(100% - 32px);text-align:center}
  .kv-panel{max-height:42%}
}

/* ---------- every kit, as a list ---------- */
.kv-all{margin-top:clamp(48px,7vw,96px)}
.kv-all__heading:not(#\#){margin:0 0 20px;font-size:clamp(1.5rem,2.6vw,2.25rem)}
.kv-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));border-top:1px solid var(--line)}
.kv-kit{padding:22px 24px 22px 0;border-bottom:1px solid var(--line)}
@media(min-width:700px){.kv-kit{padding-right:32px}}
.kv-kit__head{display:flex;gap:14px;align-items:baseline}
.kv-kit__no{font:500 .8125rem var(--font-code,monospace);color:var(--kit-accent)}
.kv-kit__name:not(#\#){margin:0;font-size:1.25rem;line-height:1.15}
.kv-kit__edition{margin:4px 0 0;font-size:.875rem;color:var(--ink-2)}
.kv-kit__meta{display:grid;grid-template-columns:auto auto;gap:6px 24px;margin:14px 0 0 calc(14px + 2ch)}
.kv-kit__meta dt{font:500 .75rem/1.2 var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:#8b97aa}
.kv-kit__meta dd{margin:2px 0 0;font-size:.9375rem;color:var(--ink)}
.kv-kit__concepts{grid-column:1 / -1}
.kv-kit__concepts dd{color:var(--ink-2)}
.kv-kit__parts{margin:12px 0 0 calc(14px + 2ch)}
.kv-kit__parts summary{display:inline-flex;align-items:center;gap:10px;min-height:44px;cursor:pointer;font-weight:600;color:var(--ink);list-style:none}
.kv-kit__parts summary::-webkit-details-marker{display:none}
.kv-kit__parts summary::after{content:'+';font:500 1.1rem/1 var(--font-code,monospace);color:var(--kit-accent)}
.kv-kit__parts[open] summary::after{content:'−'}
.kv-kit__parts summary:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px}
.kv-kit__parts ul{list-style:none;margin:4px 0 0;padding:0}
.kv-kit__parts li{display:flex;justify-content:space-between;gap:16px;padding:6px 0;border-top:1px solid var(--line);font-size:.9375rem;color:var(--ink-2)}
.kv-kit__parts em{font:500 .8125rem var(--font-code,monospace);font-style:normal;color:#8b97aa;white-space:nowrap}
.kl__more:not(#\#){display:inline-flex;margin-top:12px}

/* ---------- v10: enlarge (whole viewer fills the window), corner buttons ---------- */
.kv-corner{position:absolute;right:16px;top:16px;z-index:6;width:44px;height:44px;display:grid;place-items:center;padding:0;border:1px solid var(--line-2,#2c3546);border-radius:6px;background:#12161dee;color:var(--ink);cursor:pointer}
.kv-corner svg{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.kv-corner:hover{border-color:var(--orange);color:var(--orange)}
.kv-corner:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
.kv-exit{display:none}
.kv--no3d .kv-expand{display:none}
/* the parts panel starts below the corner button */
@media(min-width:901px){.kv-panel:not(#\#){top:calc(50% + 26px);max-height:calc(100% - 92px)}}

html.kv-lock,html.kv-lock body{overflow:hidden}
.kv-viewer.is-expanded:not(#\#){position:fixed;inset:0;z-index:2000;width:auto;max-width:none;margin:0;padding:0;display:flex;flex-direction:column;background:#0b0d11}
.kv-viewer.is-expanded .kv-stage:not(#\#){flex:1 1 auto;height:auto;min-height:0;border:0;border-radius:0}
.kv-viewer.is-expanded .kv-bar:not(#\#){flex:none;border-inline:0;border-bottom:0;border-radius:0;padding-inline:clamp(16px,3vw,40px)}
.kv-viewer.is-expanded .kv-expand{display:none}
.kv-viewer.is-expanded .kv-exit{display:grid}
.kv-viewer.is-expanded .kv-canvas{touch-action:none}
.kv-viewer.is-expanded .kv-close{left:clamp(16px,3vw,40px);top:16px}
.kv-viewer.is-expanded .kv-corner{right:clamp(16px,3vw,40px)}
@media(min-width:901px){.kv-viewer.is-expanded .kv-panel:not(#\#){right:clamp(16px,3vw,40px)}}
@media(max-width:900px){.kv-viewer.is-expanded .kv-meta__wide{display:none}}