/*
 * EDU · neonový vzhled (dashboard styl) – načítá se po edu.css a jen ho přebarvuje a oživuje.
 * Barva aktivní skupiny = --grp (body[data-grp=…]). Jen logické vlastnosti (RTL). Animace vypne html.fx-still
 * (panel ⚙ nebo prefers-reduced-motion).
 */
:root{
  --bg:#03060d; --panel:rgba(8,14,28,.72); --panel2:rgba(12,22,42,.62); --line:rgba(70,150,255,.22); --ink:#e6f1ff; --mute:#8ea7c4;
  --acc:#2ff5c2; --acc2:#ffc14d; --warn:#ff4d6d; --blue:#4fb2ff; --mag:#ff4fd8; --vio:#a56bff;
  --grp:#29d8ff; --glow:0 0 12px color-mix(in srgb,var(--grp) 55%,transparent);
  --edge:linear-gradient(135deg,color-mix(in srgb,var(--grp) 80%,#fff 0%),rgba(255,79,216,.55) 50%,rgba(255,193,77,.5));
}
body[data-grp=bio]{--grp:#39ff9f} body[data-grp=elec]{--grp:#29d8ff} body[data-grp=chem]{--grp:#ff9a3c} body[data-grp=mf]{--grp:#c86bff} body[data-grp=ai]{--grp:#ff5fa2} body[data-grp=games]{--grp:#d4ff3d}
html,body{background:var(--bg)}
.fx-bg{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
header,main{position:relative;z-index:1}
header{z-index:3}
.fx-layer{position:fixed;inset:0;pointer-events:none;z-index:50}

/* ---- hlavička */
header{background:linear-gradient(180deg,rgba(6,12,26,.92),rgba(4,8,18,.72));border-bottom:1px solid transparent;
  border-image:linear-gradient(90deg,transparent,var(--grp),var(--mag),transparent) 1;backdrop-filter:blur(6px);box-shadow:0 6px 30px rgba(0,0,0,.45)}
.brand{font-size:20px;font-weight:900;letter-spacing:.18em;background:linear-gradient(90deg,var(--grp),var(--mag),var(--acc2),var(--grp));background-size:300% 100%;
  -webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 0 6px color-mix(in srgb,var(--grp) 60%,transparent));animation:fx-hue 8s linear infinite}
@keyframes fx-hue{to{background-position:300% 0}}
.groups{border:1px solid var(--line);border-radius:12px;background:rgba(6,12,24,.6);box-shadow:inset 0 0 12px rgba(0,0,0,.6)}
.groups button{position:relative;transition:color .25s,background .25s,text-shadow .25s;letter-spacing:.03em}
.groups button:hover{color:var(--ink);text-shadow:0 0 8px var(--grp)}
.groups button.on{background:linear-gradient(180deg,color-mix(in srgb,var(--grp) 35%,transparent),color-mix(in srgb,var(--grp) 12%,transparent));color:#fff;
  text-shadow:0 0 10px var(--grp);box-shadow:inset 0 -2px 0 var(--grp),inset 0 0 18px color-mix(in srgb,var(--grp) 30%,transparent)}
nav#tabs button{transition:all .25s;background:rgba(8,16,30,.55);border-color:var(--line)}
nav#tabs button:hover{color:var(--ink);border-color:var(--grp);box-shadow:var(--glow)}
nav#tabs button.on{color:#02060c;background:linear-gradient(90deg,var(--grp),color-mix(in srgb,var(--grp) 60%,#fff));border-color:transparent;box-shadow:0 0 16px color-mix(in srgb,var(--grp) 70%,transparent)}
.chip{border-color:var(--line);background:rgba(6,12,24,.5)}
.subtitle{color:color-mix(in srgb,var(--grp) 55%,var(--mute));letter-spacing:.02em}
.fx-caret::after{content:"▌";animation:fx-blink .6s steps(1) infinite;color:var(--grp)}
@keyframes fx-blink{50%{opacity:0}}

/* ---- ovládání FX v hlavičce */
.fx-ctl{position:relative;display:flex;gap:4px}
.fx-ico{background:rgba(8,16,30,.7);color:var(--ink);border:1px solid var(--line);border-radius:9px;padding:3px 8px;cursor:pointer;font-size:14px;transition:all .2s}
.fx-ico:hover{border-color:var(--grp);box-shadow:var(--glow)}
.fx-ico.off{opacity:.55}
.fx-pop{position:absolute;inset-inline-end:0;top:calc(100% + 8px);width:290px;z-index:60;background:rgba(6,12,24,.96);border:1px solid var(--grp);border-radius:14px;padding:10px 12px;
  box-shadow:0 0 30px color-mix(in srgb,var(--grp) 35%,transparent),0 20px 40px rgba(0,0,0,.6);color:var(--ink);font-size:13px;animation:fx-drop .25s ease-out}
.fx-pop[hidden]{display:none}
.fx-pop h5{margin:0 0 6px;font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--grp)}
.fx-row{display:flex;justify-content:space-between;align-items:center;gap:10px;margin:5px 0}
.fx-row input[type=range]{width:120px}
.fx-juke{display:grid;grid-template-columns:1fr 1fr;gap:4px}
.fx-juke .btn{margin:0;font-size:12px;padding:5px 6px}
@keyframes fx-drop{from{opacity:0;transform:translateY(-6px) scale(.97)}}

/* ---- 3D/2D okno: neonový rám s rohy */
#view{border:1px solid var(--line);border-radius:16px;margin:8px;margin-inline-end:4px;box-shadow:0 0 0 1px rgba(0,0,0,.5),0 0 26px color-mix(in srgb,var(--grp) 18%,transparent),inset 0 0 40px rgba(0,0,0,.5)}
#view::before,#view::after{content:"";position:absolute;width:26px;height:26px;z-index:6;pointer-events:none;border:2px solid var(--grp);filter:drop-shadow(0 0 5px var(--grp));opacity:.85}
#view::before{top:6px;inset-inline-start:6px;border-inline-end:0;border-bottom:0;border-start-start-radius:10px}
#view::after{bottom:6px;inset-inline-end:6px;border-inline-start:0;border-top:0;border-end-end-radius:10px}
#view.fx-enter{animation:fx-in .7s cubic-bezier(.2,.8,.2,1)}
#view.fx-enter>canvas{animation:fx-scan .8s ease-out}
@keyframes fx-in{from{filter:brightness(2.2) saturate(1.6) blur(3px);transform:scale(.985)}}
@keyframes fx-scan{0%{clip-path:inset(0 0 100% 0)}100%{clip-path:inset(0 0 0 0)}}
#view.fx-glitch{animation:fx-shake .5s steps(2) 1}
#view.fx-glitch>canvas{animation:fx-rgb .6s steps(3) 1}
@keyframes fx-shake{20%{transform:translate(-4px,2px)}40%{transform:translate(5px,-2px)}60%{transform:translate(-3px,-3px)}80%{transform:translate(2px,3px)}}
@keyframes fx-rgb{0%{filter:drop-shadow(4px 0 #f0f) drop-shadow(-4px 0 #0ff)}50%{filter:hue-rotate(90deg) contrast(1.6)}100%{filter:none}}
#hint,#info,#hud .card,.verdict{backdrop-filter:blur(4px)}
#hint{background:rgba(4,10,20,.72);border:1px solid var(--line)}
#info{background:rgba(6,12,24,.92);border:1px solid var(--grp);box-shadow:var(--glow);animation:fx-drop .25s}
#info h4{color:var(--grp)}

/* ---- panel */
#panel{background:linear-gradient(180deg,rgba(6,12,26,.82),rgba(4,8,18,.9));border-inline-start:1px solid var(--line);backdrop-filter:blur(8px)}
.sec{background:var(--panel2);border:1px solid var(--line);border-radius:14px;position:relative;box-shadow:inset 0 1px 0 rgba(255,255,255,.04),0 6px 18px rgba(0,0,0,.25);transition:border-color .3s,box-shadow .3s}
.sec:hover{border-color:color-mix(in srgb,var(--grp) 45%,transparent)}
.sec[open]{box-shadow:inset 0 1px 0 rgba(255,255,255,.05),0 0 18px color-mix(in srgb,var(--grp) 10%,transparent)}
.sec summary{letter-spacing:.02em;transition:color .2s}
.sec summary:hover{color:var(--grp)}
.sec summary::before{color:var(--grp)}
.sec[open]>.sec-body{animation:fx-open .3s ease-out}
@keyframes fx-open{from{opacity:0;transform:translateY(-4px)}}
.fx-in{animation:fx-rise .55s cubic-bezier(.2,.8,.2,1) both;animation-delay:calc(var(--i,0) * 70ms)}
@keyframes fx-rise{from{opacity:0;transform:translateY(14px);filter:blur(2px)}}
.btn{background:linear-gradient(180deg,rgba(22,40,70,.9),rgba(12,22,40,.9));border:1px solid rgba(90,160,255,.3);border-radius:10px;position:relative;overflow:hidden;transition:transform .12s,box-shadow .2s,border-color .2s}
.btn:hover{border-color:var(--grp);box-shadow:0 0 12px color-mix(in srgb,var(--grp) 40%,transparent)}
.btn:active{transform:scale(.97)}
.btn::after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.14) 50%,transparent 70%);transform:translateX(-120%);transition:transform .5s}
.btn:hover::after{transform:translateX(120%)}
.btn.pri{background:linear-gradient(90deg,var(--grp),color-mix(in srgb,var(--grp) 55%,var(--mag)));color:#02060c;border-color:transparent;box-shadow:0 0 14px color-mix(in srgb,var(--grp) 50%,transparent)}
.btn.warn{background:linear-gradient(180deg,rgba(80,16,34,.9),rgba(40,8,18,.9));border-color:rgba(255,77,109,.5)}
.btn.on{border-color:var(--acc2);box-shadow:0 0 10px rgba(255,193,77,.4),inset 0 0 0 1px var(--acc2)}
input[type=range]{accent-color:var(--grp)}
select,input[type=text],textarea{background:rgba(4,10,20,.85);color:var(--ink);border:1px solid var(--line);border-radius:8px}
/* rozbalený seznam select: vždy plné tmavé pozadí a světlé písmo (průhledné nebo poloprůhledné pozadí select se v seznamu změní na bílé) */
select{background-color:#060d18}
select,select option,select optgroup{color-scheme:dark}
select option,select optgroup{background-color:#0b1320;color:#e6f1ff}
html[data-proj] select option,html[data-proj] select optgroup{background-color:#05080c;color:#fff}
select:focus,input:focus,textarea:focus{outline:none;border-color:var(--grp);box-shadow:var(--glow)}
.val.fx-pulse{animation:fx-pulse .35s}
@keyframes fx-pulse{40%{color:var(--grp);text-shadow:0 0 8px var(--grp)}}
.bar .track{background:rgba(2,6,14,.8)}
.bar .track i{box-shadow:0 0 10px currentColor}
canvas.chart{background:rgba(2,6,14,.8);border-color:var(--line)}
.card{background:rgba(4,10,20,.75);border-color:var(--line)}
.card h5{color:var(--grp)}
.stats b.g{text-shadow:0 0 6px rgba(47,245,194,.5)} .stats b.r{text-shadow:0 0 6px rgba(255,77,109,.5)}

/* ---- Rozbij experiment */
.sec.brk{border-color:rgba(255,80,110,.35)}
.sec.brk>summary{color:#ff8fa3;text-shadow:0 0 8px rgba(255,80,110,.5)}
.brk-btn{background:linear-gradient(180deg,rgba(60,14,30,.85),rgba(26,8,18,.9));border-color:rgba(255,80,110,.35)}
.brk-btn:hover{border-color:#ff5577;box-shadow:0 0 12px rgba(255,85,119,.45)}
.brk-card.on{animation:fx-drop .3s;box-shadow:0 0 18px color-mix(in srgb,var(--k) 40%,transparent)}
.brk-badge{box-shadow:0 0 16px color-mix(in srgb,var(--k) 55%,transparent);animation:fx-badge 1.6s ease-in-out infinite}
@keyframes fx-badge{50%{box-shadow:0 0 28px color-mix(in srgb,var(--k) 85%,transparent)}}

/* ---- částice, toasty */
.fx-spark{position:fixed;width:5px;height:5px;margin:-2px;border-radius:50%;background:var(--c,var(--grp));box-shadow:0 0 8px var(--c,var(--grp));animation:fx-spark .6s ease-out forwards}
@keyframes fx-spark{to{transform:translate(var(--dx),var(--dy)) scale(.2);opacity:0}}
.fx-toasts{position:absolute;bottom:44px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;gap:6px;align-items:center;z-index:8;pointer-events:none}
.fx-toast{background:rgba(6,12,24,.92);border:1px solid var(--grp);color:var(--ink);border-radius:999px;padding:6px 16px;font-size:13px;white-space:nowrap;
  box-shadow:0 0 18px color-mix(in srgb,var(--grp) 45%,transparent);animation:fx-toast .4s cubic-bezier(.2,1.4,.4,1)}
.fx-toast b{color:var(--grp)} .fx-toast.ok{border-color:var(--acc)} .fx-toast.bad{border-color:var(--warn)}
.fx-toast.out{opacity:0;transform:translateY(8px);transition:all .45s}
@keyframes fx-toast{from{opacity:0;transform:translateY(16px) scale(.9)}}

/* ---- úvodní obrazovka */
.fx-splash{position:fixed;inset:0;z-index:100;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  background:radial-gradient(ellipse at 50% 40%,rgba(30,40,90,.95),rgba(2,4,10,.98) 70%);transition:opacity .55s,transform .55s}
.fx-splash.out{opacity:0;transform:scale(1.06);pointer-events:none}
.fx-logo{position:relative;font-size:clamp(64px,14vw,150px);font-weight:900;letter-spacing:.22em;color:#e9f8ff;text-shadow:0 0 18px #29d8ff,0 0 42px #29d8ff,0 0 80px #c86bff}
.fx-logo::before,.fx-logo::after{content:attr(data-text);position:absolute;inset:0;opacity:.7}
.fx-logo::before{color:#ff4fd8;animation:fx-gl1 2.4s infinite steps(1)} .fx-logo::after{color:#2ff5c2;animation:fx-gl2 2.4s infinite steps(1)}
@keyframes fx-gl1{0%,88%{transform:none;clip-path:inset(0 0 100% 0)}90%{transform:translate(-6px,0);clip-path:inset(20% 0 50% 0)}94%{transform:translate(5px,0);clip-path:inset(60% 0 10% 0)}}
@keyframes fx-gl2{0%,90%{transform:none;clip-path:inset(0 0 100% 0)}92%{transform:translate(6px,0);clip-path:inset(40% 0 30% 0)}96%{transform:translate(-4px,0);clip-path:inset(5% 0 75% 0)}}
.fx-sub{color:var(--mute);font-size:15px;letter-spacing:.08em;text-align:center;max-width:90vw}
.fx-load{width:min(360px,70vw);height:4px;border-radius:4px;background:rgba(255,255,255,.08);overflow:hidden}
.fx-load i{display:block;height:100%;width:100%;background:linear-gradient(90deg,#29d8ff,#ff4fd8,#ffc14d);box-shadow:0 0 12px #29d8ff;animation:fx-load 1.4s cubic-bezier(.6,.1,.3,1) both}
@keyframes fx-load{from{transform:translateX(-100%)}}
[dir=rtl] .fx-load i{animation-name:fx-load-rtl} @keyframes fx-load-rtl{from{transform:translateX(100%)}}
.fx-splash .btnrow{gap:10px}
.fx-langs{display:grid;grid-template-columns:repeat(auto-fit,minmax(104px,1fr));gap:6px;width:min(640px,92vw)}
.fx-lang{font:inherit;font-size:14px;padding:7px 8px;border-radius:8px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.04);color:var(--mute,#9ab);cursor:pointer;text-align:center}
.fx-lang:hover,.fx-lang:focus-visible{color:#e9f8ff;border-color:#29d8ff;outline:none}
.fx-lang.on{color:#e9f8ff;border-color:#29d8ff;background:rgba(41,216,255,.14);box-shadow:0 0 10px rgba(41,216,255,.45)}
@media (max-height:560px){.fx-splash{gap:8px}.fx-logo{font-size:48px}}
.fx-splash .btn{padding:10px 22px;font-size:15px}

/* ---- tlumení pohybu */
html.fx-still *,html.fx-still *::before,html.fx-still *::after{animation:none!important;transition:none!important}
@media (max-width:860px){#view{margin:6px}.fx-pop{position:fixed;inset-inline:8px;top:60px;width:auto}}

/* ---- EDU.Stage (2D diagramy přes celé okno, core/edu-stage.js) */
.edu-stage{position:absolute;inset:0;width:100%;height:100%;display:block;z-index:1;touch-action:none;background:radial-gradient(ellipse at 50% 30%,rgba(18,26,58,.95),rgba(3,6,14,.98) 75%)}
.stage-on #hint{display:none}
.stage-on #info,.stage-on #hud,.stage-on .fx-toasts{z-index:4}

/* ============================================================ jazyky: paleta + písma podle písma (script) */
.lang{position:relative;display:inline-flex}
.lang-btn{display:inline-flex;gap:5px;align-items:center;background:rgba(6,12,24,.5);color:var(--ink);border:1px solid var(--line);border-radius:999px;padding:3px 10px;cursor:pointer;font:inherit;font-size:12px}
.lang-btn:hover,.lang-btn:focus-visible{border-color:var(--grp);box-shadow:0 0 10px color-mix(in srgb,var(--grp) 45%,transparent)}
.lang-btn b{letter-spacing:.06em}
.lang-pop{position:absolute;inset-inline-end:0;top:calc(100% + 8px);z-index:60;width:min(440px,92vw);display:grid;grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:6px;
  background:rgba(6,12,24,.96);border:1px solid var(--grp);border-radius:14px;padding:10px;box-shadow:0 0 30px color-mix(in srgb,var(--grp) 30%,transparent);backdrop-filter:blur(8px)}
.lang-pop[hidden]{display:none}
.lang-pop button{display:flex;gap:8px;align-items:baseline;text-align:start;background:transparent;color:var(--ink);border:1px solid var(--line);border-radius:9px;padding:6px 8px;cursor:pointer;font-size:13px;min-width:0}
.lang-pop button:hover,.lang-pop button:focus-visible{border-color:var(--grp);background:color-mix(in srgb,var(--grp) 12%,transparent);outline:none}
.lang-pop button.on{border-color:var(--grp);background:color-mix(in srgb,var(--grp) 22%,transparent)}
.lang-pop .lc{font:600 10.5px ui-monospace,Menlo,Consolas,monospace;color:var(--grp);direction:ltr;unicode-bidi:isolate}
.lang-pop .ln{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lang-pop .beta{color:var(--acc2);font-size:10px;margin-inline-start:auto}
@media (max-width:860px){.lang-pop{position:fixed;inset-inline:8px;top:60px;width:auto}}

/* písma: systémová písma s rezervou (nic se nestahuje, vše z file://) */
:lang(zh) body,:lang(zh) button,:lang(zh) input,:lang(zh) select,.lang-pop [lang=zh]{font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Noto Sans SC","Source Han Sans SC","WenQuanYi Micro Hei",sans-serif}
:lang(hi) body,:lang(hi) button,:lang(hi) input,:lang(hi) select,.lang-pop [lang=hi]{font-family:system-ui,"Nirmala UI","Kohinoor Devanagari","Noto Sans Devanagari","Mangal","Lohit Devanagari",sans-serif;line-height:1.6}
:lang(fa) body,:lang(fa) button,:lang(fa) input,:lang(fa) select,.lang-pop [lang=fa]{font-family:"Vazirmatn","Segoe UI",Tahoma,"Noto Naskh Arabic","Noto Sans Arabic","Geeza Pro",sans-serif}
:lang(ar) button,:lang(ar) input,:lang(ar) select{font-family:inherit}
:lang(vi) body{font-family:system-ui,"Segoe UI",Roboto,"Noto Sans","Helvetica Neue",Arial,sans-serif}
/* písma bez velkých písmen nebo se spojitým písmem: žádné prostrkání ani verzálky (rozbilo by ligatury arabského písma a devanágarí) */
:lang(ar) *,:lang(fa) *,:lang(hi) *,:lang(zh) *{letter-spacing:0!important}
:lang(ar) .fx-pop h5,:lang(fa) .fx-pop h5,:lang(hi) .fx-pop h5,:lang(zh) .fx-pop h5{text-transform:none}
/* dlouhá slova (de, hu, fi…) se smějí dělit, ať nevylezou z panelu */
#panel,.groups button,#tabs button,.btn,.fx-pop,#info{overflow-wrap:anywhere;hyphens:auto}
:lang(zh) #panel,:lang(zh) #info{line-break:strict;overflow-wrap:break-word}

/* ===== 💡 V kostce (core/edu-explain.js) — jedna karta pro všechny experimenty. Čitelnost před efektem: tlumená záře, velké písmo. */
.ex-btn{display:flex;align-items:center;justify-content:center;gap:6px;width:100%;margin:0 0 10px;padding:9px 12px;font-weight:700;
  background:linear-gradient(180deg,color-mix(in srgb,var(--grp) 22%,#0e1a2a),#0b1422);border-color:color-mix(in srgb,var(--grp) 55%,transparent)}
.ex-btn:hover{border-color:var(--grp)}
.ex-modal{position:fixed;inset:0;z-index:60;display:grid;place-items:center;padding:16px;background:rgba(2,5,10,.66);backdrop-filter:blur(3px);animation:ex-in .18s ease-out}
.ex-card{position:relative;display:flex;width:min(860px,100%);max-height:calc(100vh - 32px);overflow:hidden;
  background:#0b1320;border:1px solid color-mix(in srgb,var(--grp) 45%,var(--line));border-radius:16px;box-shadow:0 18px 60px rgba(0,0,0,.6);animation:ex-up .22s ease-out}
.ex-scroll{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);flex:1;min-width:0;max-height:calc(100vh - 32px);overflow:auto;border-radius:16px}
.ex-fig{margin:0;position:relative;min-height:260px;background:#08101b;border-start-start-radius:16px;border-end-start-radius:16px;overflow:hidden}
.ex-fig img{display:block;width:100%;height:100%;object-fit:cover}
.ex-ph{display:none}
.ex-fig.empty .ex-ph{position:absolute;inset:14px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;
  border:2px dashed color-mix(in srgb,var(--grp) 40%,var(--line));border-radius:12px;color:var(--mute);font-size:12.5px;padding:10px}
.ex-ph-ico{font-size:54px;line-height:1;filter:grayscale(.2)}
.ex-ph code{font-size:11px;color:#6f8599;word-break:break-all}
.ex-body{padding:20px 22px 18px;display:flex;flex-direction:column;gap:10px;min-width:0}
.ex-kicker{font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--grp);font-weight:700}
.ex-body h3{margin:0;font-size:22px;line-height:1.2;color:#fff}
.ex-folk{margin:0;font-size:15.5px;line-height:1.55;color:#e8f0f6}
.ex-sci{border:1px solid var(--line);border-radius:10px;background:#0e1826}
.ex-sci summary{cursor:pointer;padding:7px 10px;font-weight:600;font-size:13px;color:#bcd0e0;list-style:none}
.ex-sci summary::-webkit-details-marker{display:none}
.ex-sci p{margin:0;padding:0 10px 10px;font-size:13.5px;line-height:1.55;color:#c9d6e0}
.ex-take{display:flex;gap:8px;align-items:baseline;padding:9px 12px;border-radius:10px;font-size:14px;line-height:1.45;
  background:color-mix(in srgb,var(--grp) 12%,#0b1320);border-inline-start:3px solid var(--grp)}
.ex-take b{white-space:nowrap;color:var(--grp)}
.ex-go{align-self:flex-start;margin-top:4px;padding:8px 18px;background:var(--grp);border-color:var(--grp);color:#05101a}
.ex-x{position:absolute;top:8px;inset-inline-end:8px;z-index:2;width:32px;height:32px;border-radius:50%;border:1px solid var(--line);background:rgba(8,14,24,.85);color:var(--ink);cursor:pointer;font:inherit}
.ex-x:hover{border-color:var(--grp)}
@media (max-width:720px){
  .ex-scroll{grid-template-columns:1fr}
  .ex-fig{min-height:170px;max-height:220px;border-end-start-radius:0;border-start-end-radius:16px}
  .ex-body h3{font-size:19px} .ex-folk{font-size:14.5px}
}
@keyframes ex-in{from{opacity:0}} @keyframes ex-up{from{opacity:0;transform:translateY(10px) scale(.98)}}
html.fx-still .ex-modal,html.fx-still .ex-card{animation:none}

/* ============================================================ menu modulů (ikona → nabídka karet) */
.modmenu{position:relative;display:inline-flex}
.mm-btn{display:inline-flex;gap:9px;align-items:center;background:rgba(6,12,24,.6);color:var(--ink);border:1px solid var(--line);border-radius:12px;padding:5px 12px 5px 9px;cursor:pointer;font:inherit;font-weight:700;letter-spacing:.02em;box-shadow:inset 0 0 12px rgba(0,0,0,.6)}
.mm-btn:hover,.mm-btn:focus-visible,.mm-btn[aria-expanded=true]{border-color:var(--grp);box-shadow:0 0 14px color-mix(in srgb,var(--grp) 45%,transparent);outline:none}
.mm-btn .ico{font-size:17px}
.mm-btn b{font-weight:700;text-shadow:0 0 8px color-mix(in srgb,var(--grp) 70%,transparent)}
.mm-caret{color:var(--mute);font-size:11px}
.mm-grid{display:grid;grid-template-columns:repeat(3,5px);gap:2.5px}
.mm-grid i{display:block;width:5px;height:5px;border-radius:1.5px;background:var(--grp);opacity:.9}
.mm-btn:hover .mm-grid i,.mm-btn[aria-expanded=true] .mm-grid i{box-shadow:0 0 6px var(--grp)}
.mm-pop{position:absolute;inset-inline-start:0;top:calc(100% + 8px);z-index:60;width:min(820px,94vw);background:rgba(6,12,24,.97);border:1px solid var(--grp);border-radius:16px;padding:12px;box-shadow:0 0 34px color-mix(in srgb,var(--grp) 30%,transparent);backdrop-filter:blur(8px)}
.mm-pop[hidden]{display:none}
.mm-head{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--mute);margin:0 4px 8px}
.mm-grid-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.mm-card{--c:var(--grp);display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto auto;column-gap:10px;align-items:center;text-align:start;background:linear-gradient(135deg,color-mix(in srgb,var(--c) 10%,#0b1320),#0a111c);color:var(--ink);border:1px solid color-mix(in srgb,var(--c) 40%,var(--line));border-radius:12px;padding:9px 11px;cursor:pointer;font:inherit;min-width:0}
.mm-card:hover,.mm-card:focus-visible{border-color:var(--c);box-shadow:0 0 16px color-mix(in srgb,var(--c) 45%,transparent);outline:none;transform:translateY(-1px)}
.mm-card.on{border-color:var(--c);background:linear-gradient(135deg,color-mix(in srgb,var(--c) 26%,#0b1320),#0a111c)}
.mm-card[data-id=bio]{--c:#39ff9f} .mm-card[data-id=elec]{--c:#29d8ff} .mm-card[data-id=chem]{--c:#ff9a3c} .mm-card[data-id=mf]{--c:#c86bff} .mm-card[data-id=ai]{--c:#ff5fa2} .mm-card[data-id=games]{--c:#d4ff3d}
.mm-ico{grid-row:1/4;font-size:30px;line-height:1;filter:drop-shadow(0 0 8px var(--c))}
.mm-t{font-weight:800;color:var(--c);font-size:14.5px}
.mm-s{font-size:11.5px;color:var(--mute);line-height:1.3;max-height:2.6em;overflow:hidden}
.mm-n{font-size:11px;color:var(--ink);opacity:.75;margin-top:2px}
@media (max-width:860px){.mm-pop{position:fixed;inset-inline:8px;top:60px;width:auto}.mm-grid-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.mm-btn b{max-width:34vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}
@media (max-width:560px){.mm-grid-cards{grid-template-columns:1fr}}
.mm-pop{max-height:calc(100vh - 80px);overflow-y:auto}
html.fx-still .mm-card{transform:none!important}