/* E-Azubi Trainer
   Layout: Kopfzeile oben, Navigation unten (Handy) oder links (ab 900 px), Inhalt dazwischen.
   Farben angelehnt an den Schaltschrank: RAL 7035 Lichtgrau hell, RAL 7016 Anthrazit dunkel, Signalgelb für Strom. */
:root{
  --bg:#dfe3e0;
  --plate:#f2f4f0;
  --well:#bcc4bf;
  --tile:#f6f7f3;
  --tile-lock:#e1e6de;
  --ink:#1c2528;
  --muted:#52606a;
  --line:#a3ada8;
  --wire:#6f7c85;
  --live:#c47f00;
  --live-hot:#fff4c7;
  --glow:rgba(255,176,0,.38);
  --lamp:#ffcf3d;
  --filament:#8a5600;
  --on-live:#1c2528;
  --accent:#ffb81c;
  --accent-deep:#b07800;
  --scrim:rgba(212,217,213,.74);
  --shadow:rgba(28,37,40,.18);
  --paper:#fbfcf9;
  --grid:rgba(28,37,40,.13);
  --c-l1:#7b4a1e;
  --c-l2:#161616;
  --c-l3:#848c90;
  --c-n:#1e6cc8;
  --c-pe:#2c9442;
  --c-pe2:#f0cf1f;
  --c-dead:rgba(28,37,40,.62);
  --edge:rgba(255,255,255,0);
  --pick:#b03685;
  --ok:#2e7d43;
  --ok-bg:#e3f1e6;
  --bad:#b8402a;
  --bad-bg:#f6e3dc;
  --locked:#c9cfcb;
  --locked-ink:#6b767b;
  --roof:#b4573a;
  --roof-2:#9c4a31;
  --module:#1d2a44;
  --module-line:#8fa3c4;
  --soil:#8a6b4a;
  --str1:#ffb81c;
  --str2:#4fd1e3;
  --head-bg:#1c2528;
  --head-fg:#f2f4f0;
  --head-line:#1c2528;
  --font-display:"Barlow Condensed","Arial Narrow","Roboto Condensed",sans-serif;
  --font-body:"Barlow",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --top:56px;
  --navh:66px;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#22282b; --plate:#2e363b; --well:#1b2023; --tile:#363e44; --tile-lock:#2c3338;
    --ink:#e3e8e5; --muted:#9daaae; --line:#56626a; --wire:#71808a; --live:#ffb81c; --live-hot:#fff7da;
    --glow:rgba(255,184,28,.30); --lamp:#ffd24a; --filament:#8a5600; --on-live:#1c2528; --accent:#ffb81c; --accent-deep:#9a6a00;
    --scrim:rgba(38,44,48,.74); --shadow:rgba(0,0,0,.45); --paper:#1e2427; --grid:rgba(227,232,229,.10);
    --c-l1:#b9824e; --c-l2:#0b0c0d; --c-l3:#949da2; --c-n:#4c9be8; --c-pe:#3fae57; --c-pe2:#f0cf1f;
    --c-dead:rgba(227,232,229,.55); --edge:rgba(235,240,238,.6); --pick:#ea7cc0;
    --ok:#5cc67a; --ok-bg:#1f3626; --bad:#ff7a5c; --bad-bg:#3a2622; --locked:#3c464c; --locked-ink:#93a0a5;
    --roof:#8f4a33; --roof-2:#7a3e2a; --module:#16223a; --module-line:#6f86ad; --soil:#5e4a35;
    --head-bg:#12171a; --head-fg:#e3e8e5; --head-line:#ffb81c;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#22282b; --plate:#2e363b; --well:#1b2023; --tile:#363e44; --tile-lock:#2c3338;
  --ink:#e3e8e5; --muted:#9daaae; --line:#56626a; --wire:#71808a; --live:#ffb81c; --live-hot:#fff7da;
  --glow:rgba(255,184,28,.30); --lamp:#ffd24a; --filament:#8a5600; --on-live:#1c2528; --accent:#ffb81c; --accent-deep:#9a6a00;
  --scrim:rgba(38,44,48,.74); --shadow:rgba(0,0,0,.45); --paper:#1e2427; --grid:rgba(227,232,229,.10);
  --c-l1:#b9824e; --c-l2:#0b0c0d; --c-l3:#949da2; --c-n:#4c9be8; --c-pe:#3fae57; --c-pe2:#f0cf1f;
  --c-dead:rgba(227,232,229,.55); --edge:rgba(235,240,238,.6); --pick:#ea7cc0;
  --ok:#5cc67a; --ok-bg:#1f3626; --bad:#ff7a5c; --bad-bg:#3a2622; --locked:#3c464c; --locked-ink:#93a0a5;
  --roof:#8f4a33; --roof-2:#7a3e2a; --module:#16223a; --module-line:#6f86ad; --soil:#5e4a35;
  --head-bg:#12171a; --head-fg:#e3e8e5; --head-line:#ffb81c;
  color-scheme:dark;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:16px;line-height:1.5}
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:2.5px solid var(--ink);outline-offset:2px}
a{color:inherit}
.skip{position:absolute;left:-9999px;top:8px;z-index:50;background:var(--ink);color:var(--plate);padding:8px 12px;border-radius:6px}
.skip:focus{left:8px}
.ico{flex:none}

/* ---------- Hülle ---------- */
.topbar{position:fixed;top:0;left:0;right:0;z-index:20;height:calc(var(--top) + env(safe-area-inset-top,0px));padding:env(safe-area-inset-top,0px) 16px 0;display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--plate);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:6px;text-decoration:none;font-family:var(--font-display);font-weight:700;font-size:22px;letter-spacing:.06em;text-transform:uppercase}
.brand svg{color:var(--accent)}
.top-stats{display:flex;align-items:center;gap:14px;font-family:var(--font-display);font-weight:700;font-size:18px;font-variant-numeric:tabular-nums}
.streak{display:flex;align-items:center;gap:3px;color:var(--live)}
.streak svg{fill:var(--accent);stroke:var(--accent-deep);stroke-width:1.4;stroke-linejoin:round}
.goal-ring{--pct:0;width:34px;height:34px;border-radius:50%;background:conic-gradient(var(--ok) calc(var(--pct) * 1%), var(--locked) 0);display:grid;place-items:center}
.goal-ring span{width:26px;height:26px;border-radius:50%;background:var(--plate);display:grid;place-items:center;font-size:12px}
.nav{position:fixed;left:0;right:0;bottom:0;z-index:20;height:calc(var(--navh) + env(safe-area-inset-bottom,0px));padding-bottom:env(safe-area-inset-bottom,0px);display:grid;grid-template-columns:repeat(5,minmax(0,1fr));background:var(--plate);border-top:1px solid var(--line)}
.nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;text-decoration:none;color:var(--muted);font-size:12px;font-weight:600;position:relative}
.nav a[aria-current="true"]{color:var(--ink)}
.nav a[aria-current="true"]::after{content:"";position:absolute;bottom:6px;width:22px;height:3px;border-radius:2px;background:var(--accent)}
#view{display:block;padding:calc(var(--top) + env(safe-area-inset-top,0px) + 12px) 16px calc(var(--navh) + env(safe-area-inset-bottom,0px) + 28px);max-width:820px;margin:0 auto;outline:none}
body.focus .topbar,body.focus .nav{display:none}
body.focus #view{padding:env(safe-area-inset-top,0px) 16px calc(env(safe-area-inset-bottom,0px) + 16px);max-width:1040px}
.foot-ver{display:none}
@media (min-width:900px){
  .nav{top:calc(var(--top) + env(safe-area-inset-top,0px));bottom:0;right:auto;width:200px;height:auto;padding:16px 10px;grid-template-columns:none;grid-auto-rows:52px;align-content:start;gap:4px;border-top:0;border-right:1px solid var(--line)}
  .nav a{flex-direction:row;justify-content:flex-start;gap:12px;padding:0 14px;border-radius:8px;font-size:15px}
  .nav a[aria-current="true"]{background:var(--bg)}
  .nav a[aria-current="true"]::after{left:0;top:12px;bottom:12px;width:3px;height:auto}
  #view{padding-left:calc(200px + 32px);padding-right:32px;padding-bottom:40px;max-width:1100px;margin:0}
  body.focus #view{padding-left:16px;margin:0 auto}
  .foot-ver{display:block;position:fixed;left:0;bottom:8px;width:200px;margin:0;text-align:center;font-size:12px;color:var(--muted)}
  body.focus .foot-ver{display:none}
}

/* ---------- Knöpfe ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:8px 16px;border:1.5px solid var(--ink);border-radius:8px;background:transparent;color:var(--ink);font-family:var(--font-display);font-weight:600;font-size:16px;letter-spacing:.06em;text-transform:uppercase;text-decoration:none;cursor:pointer}
.btn:hover:not(:disabled){background:var(--plate)}
.btn:disabled{opacity:.45;cursor:default}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--on-live);box-shadow:0 4px 0 var(--accent-deep)}
.btn.primary:hover:not(:disabled){background:var(--lamp);border-color:var(--lamp)}
.btn.primary:active:not(:disabled){transform:translateY(2px);box-shadow:0 2px 0 var(--accent-deep)}
.btn.ok{background:var(--ok);border-color:var(--ok);color:#fff;box-shadow:0 4px 0 color-mix(in srgb, var(--ok) 70%, #000)}
.btn.warn{background:var(--bad);border-color:var(--bad);color:#fff;box-shadow:0 4px 0 color-mix(in srgb, var(--bad) 70%, #000)}
.btn.danger{border-color:var(--bad);color:var(--bad)}
.btn.ghost{border-color:transparent}
.btn.light{border-color:currentColor}
.btn.small{min-height:36px;padding:4px 12px;font-size:14px}
.btn.wide{width:100%;min-height:52px;font-size:18px}
.btn[aria-pressed="true"]{background:var(--ink);color:var(--plate)}
.icon-btn{width:40px;height:40px;display:grid;place-items:center;border:1.5px solid var(--ink);border-radius:8px;background:transparent;color:var(--ink);font-family:var(--font-display);font-size:22px;line-height:1;cursor:pointer;text-decoration:none}
.icon-btn.plain{border-color:transparent;width:44px;height:44px}
.icon-btn:disabled{opacity:.3;cursor:default}
.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.lbl,.eyebrow{font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0}
.switch{display:inline-flex;align-items:center;gap:8px;min-height:36px;padding:4px 12px 4px 5px;border:1.5px solid var(--ink);border-radius:999px;background:transparent;color:var(--ink);font-family:var(--font-display);font-weight:600;font-size:14px;letter-spacing:.06em;text-transform:uppercase;cursor:pointer}
.switch-knob{position:relative;width:32px;height:20px;border-radius:999px;background:var(--line);flex:none}
.switch-knob::after{content:"";position:absolute;top:3px;left:3px;width:14px;height:14px;border-radius:50%;background:var(--paper);transition:transform .15s}
.switch[aria-pressed="true"] .switch-knob{background:var(--accent)}
.switch[aria-pressed="true"] .switch-knob::after{transform:translateX(12px)}

/* ---------- Lernpfad ---------- */
.path{display:flex;flex-direction:column;align-items:stretch}
.sec-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:18px;padding:14px 16px;border-radius:12px;background:var(--plate);border:1px solid var(--line);scroll-margin-top:calc(var(--top) + 16px)}
.sec-head.active{background:var(--head-bg);color:var(--head-fg);border-color:var(--head-line)}
.sec-head.active .sec-nr{color:var(--accent)}
.sec-head.active .sec-intro{color:inherit;opacity:.82}
.sec-head .btn.light{color:inherit}
.sec-head.active .btn.light:hover{background:rgba(255,255,255,.08)}
.sec-text{display:grid;gap:3px;min-width:0;flex:1 1 220px}
.sec-nr{margin:0;font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.sec-title{margin:0;font-family:var(--font-display);font-weight:700;font-size:24px;line-height:1.05;text-wrap:balance}
.sec-intro{margin:0;font-size:14px;color:var(--muted);max-width:60ch}
.nodes{position:relative;width:320px;max-width:100%;margin:0 auto}
.cable{position:absolute;left:0;top:0;overflow:visible}
.cable path{fill:none;stroke-linecap:round}
.cable-open{stroke:var(--locked);stroke-width:12}
.cable-done{stroke:#2b3236;stroke-width:12}
.cable-glow{stroke:var(--accent);stroke-width:12;opacity:.35}
.cable-core{stroke:var(--lamp);stroke-width:4}
.node{position:absolute;border-radius:50%;border:0;display:grid;place-items:center;cursor:pointer;color:var(--ink)}
.node.k-test{border-radius:16px}
.node.done{background:var(--ink);color:var(--accent);box-shadow:0 5px 0 #0b0f10}
.node.current{background:var(--accent);color:var(--on-live);box-shadow:0 6px 0 var(--accent-deep)}
.node.open{background:var(--plate);color:var(--ink);box-shadow:0 5px 0 var(--line);border:2px solid var(--ink)}
.node.locked{background:var(--locked);color:var(--locked-ink);box-shadow:0 5px 0 var(--line)}
.node:active{transform:translateY(3px)}
.node-ring{position:absolute;width:96px;height:96px;border-radius:50%;border:3px solid var(--accent);opacity:.55;pointer-events:none;animation:ring 1.8s ease-out infinite}
@keyframes ring{0%{transform:scale(.86);opacity:.7}100%{transform:scale(1.12);opacity:0}}
.node-tag{position:absolute;font-family:var(--font-display);font-weight:600;font-size:14px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);pointer-events:none}
.bubble{position:absolute;z-index:5;width:230px;padding:12px;border-radius:12px;background:var(--plate);border:1.5px solid var(--ink);box-shadow:0 10px 24px var(--shadow);display:grid;gap:6px}
.bubble-kind{margin:0;font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.bubble-title{margin:0;font-weight:600;line-height:1.25}
.bubble-note{margin:0;font-size:14px;color:var(--muted)}
.path-end{margin:28px auto 0;max-width:46ch;text-align:center;font-size:14px;color:var(--muted)}
.note-card{display:grid;gap:8px;padding:12px 14px;border-radius:10px;border:1.5px solid var(--accent);background:var(--plate)}
.note-card p{margin:0}

/* ---------- Seiten ---------- */
.page-pad{display:grid;gap:14px}
.page-title{margin:8px 0 0;font-family:var(--font-display);font-weight:700;font-size:34px;letter-spacing:.04em;text-transform:uppercase}
.page-lead{margin:0;color:var(--muted);max-width:60ch}
.card{display:grid;gap:10px;padding:14px 16px;border-radius:12px;background:var(--plate);border:1px solid var(--line)}
.card p{margin:0}
.card-head{display:flex;justify-content:space-between;align-items:baseline}
.card-head b{font-family:var(--font-display);font-size:18px}
.tiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.tile{display:grid;gap:2px;padding:12px 14px;border-radius:12px;background:var(--plate);border:1px solid var(--line);min-width:0}
.tile b{font-family:var(--font-display);font-weight:700;font-size:28px;font-variant-numeric:tabular-nums;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tile b.live{color:var(--live)}
.week{height:120px;display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:8px;align-items:end;border-bottom:1px solid var(--line)}
.wk-col{height:100%;display:flex;flex-direction:column;justify-content:flex-end;align-items:stretch;gap:4px;font-size:12px;color:var(--muted);text-align:center}
.wk-bar{background:var(--ink);border-radius:3px 3px 0 0;min-height:0}
.wk-bar.today{background:var(--accent)}
.wk-goal{font-size:13px;color:var(--muted)}
.topic{display:grid;grid-template-columns:minmax(90px,140px) 1fr 44px;gap:10px;align-items:center;font-size:14px}
.topic b{text-align:right;font-family:var(--font-display);font-variant-numeric:tabular-nums}
.topic-bar{height:9px;border-radius:5px;background:var(--locked);overflow:hidden}
.topic-bar div{height:100%;background:var(--ink)}
.topic-bar div.full{background:var(--ok)}
.badges{display:grid;grid-template-columns:repeat(auto-fill,minmax(88px,1fr));gap:12px}
.badge{display:grid;justify-items:center;gap:6px;text-align:center;font-size:12px;line-height:1.2;color:var(--muted)}
.badge-ico{width:58px;height:58px;border-radius:16px;background:var(--locked);color:var(--locked-ink);display:grid;place-items:center}
.badge.got{color:var(--ink)}
.badge.got .badge-ico{background:var(--ink);color:var(--accent)}
.seg{display:flex;flex-wrap:wrap;gap:8px}
.warn-text{flex:1 1 100%;color:var(--bad);margin:0}
.about a{word-break:break-all}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.tool-card{display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;column-gap:12px;row-gap:2px;align-items:start;padding:14px;border-radius:12px;background:var(--plate);border:1px solid var(--line);text-decoration:none;color:var(--ink)}
.tool-card:hover{border-color:var(--ink)}
.tool-ico{grid-row:span 2;width:46px;height:46px;border-radius:12px;background:var(--ink);color:var(--accent);display:grid;place-items:center}
.tool-title{font-family:var(--font-display);font-weight:700;font-size:19px;line-height:1.15}
.tool-text{font-size:14px;color:var(--muted)}

/* ---------- Berufsschule ---------- */
.lbl-head{margin:10px 0 -4px}
.year-seg .btn{min-width:52px}
.year-note{font-size:14px;color:var(--muted)}
.lf-list{display:grid;gap:10px}
.lf-card{display:grid;grid-template-columns:auto 1fr;column-gap:14px;row-gap:6px;align-items:center;padding:12px 14px;border-radius:12px;background:var(--plate);border:1px solid var(--line);text-decoration:none;color:var(--ink)}
.lf-card:hover{border-color:var(--ink)}
.lf-nr{grid-row:span 2;width:54px;height:54px;border-radius:12px;background:var(--ink);color:var(--accent);display:grid;place-items:center;font-family:var(--font-display);font-weight:700;font-size:18px;letter-spacing:.04em;text-align:center;line-height:1}
.lf-card.done .lf-nr{background:var(--ok);color:#fff}
.lf-name{font-family:var(--font-display);font-weight:600;font-size:18px;line-height:1.15}
.lf-meta{display:flex;flex-wrap:wrap;align-items:center;gap:4px 12px;font-size:13px;color:var(--muted)}
.lf-meta .topic-bar{flex:1 1 120px;max-width:220px}
.lf-head{display:grid;gap:8px}
.lf-title{margin:0;font-family:var(--font-display);font-weight:700;font-size:28px;line-height:1.08;text-wrap:balance}
.lk-list{display:grid;gap:8px;margin:0;padding:0;list-style:none}
.lk{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;padding:10px 12px;border-radius:12px;background:var(--plate);border:1px solid var(--line)}
.lk-state{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--locked);color:var(--locked-ink);font-family:var(--font-display);font-weight:700}
.lk.done .lk-state{background:var(--ok);color:#fff}
.lk.test .lk-state{background:var(--ink);color:var(--accent)}
.lk.test.done .lk-state{background:var(--ok);color:#fff}
.lk-name{font-weight:600;line-height:1.25}
.lk-sub{display:block;font-size:13px;font-weight:400;color:var(--muted)}
.fach-tags{display:flex;flex-wrap:wrap;gap:4px;margin-top:4px}
.fach-tag{font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:1px 6px;border-radius:4px;border:1px solid var(--line);color:var(--muted)}
.tool-count{grid-column:2;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
@media (max-width:420px){
  .lk{grid-template-columns:auto 1fr}
  .lk .btn{grid-column:1 / -1}
  .lf-title{font-size:24px}
}

/* ---------- Toast, Update, Lernkarte ---------- */
.toast{position:fixed;left:50%;bottom:calc(var(--navh) + env(safe-area-inset-bottom,0px) + 14px);transform:translateX(-50%);z-index:40;max-width:calc(100% - 32px);padding:10px 16px;border-radius:10px;background:var(--ink);color:var(--plate);font-weight:600;box-shadow:0 8px 20px var(--shadow)}
body.focus .toast{bottom:calc(env(safe-area-inset-bottom,0px) + 90px)}
.update{position:fixed;left:16px;right:16px;top:calc(var(--top) + env(safe-area-inset-top,0px) + 8px);z-index:30;max-width:520px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px;border-radius:10px;background:var(--plate);border:1.5px solid var(--accent);box-shadow:0 8px 20px var(--shadow)}
dialog{border:0;padding:0;border-radius:14px;background:var(--plate);color:var(--ink);max-width:min(560px,calc(100% - 32px));box-shadow:0 20px 50px var(--shadow)}
dialog::backdrop{background:rgba(0,0,0,.45)}
.dlg{display:grid;gap:12px;padding:20px}
.dlg h2{margin:0;font-family:var(--font-display);font-size:24px}
.dlg ul{margin:0;padding-left:20px;display:grid;gap:8px}
.noscript{padding:80px 16px;text-align:center}

/* ---------- Lektion ---------- */
.lesson{display:flex;flex-direction:column;min-height:100vh;min-height:100dvh;max-width:640px;margin:0 auto}
.lp-head{display:flex;align-items:center;gap:10px;padding:10px 0;position:sticky;top:0;background:var(--bg);z-index:2}
.lp-bar{flex:1;height:12px;border-radius:6px;background:var(--locked);overflow:hidden}
.lp-fill{height:100%;width:0;background:var(--accent);border-radius:6px;transition:width .3s}
.lp-count{font-family:var(--font-display);font-weight:700;font-size:17px;color:var(--muted);font-variant-numeric:tabular-nums;min-width:3.2em;text-align:right}
.lp-body{flex:1;padding:8px 0 20px}
.lp-foot{position:sticky;bottom:0;display:grid;gap:10px;padding:14px 16px calc(14px + env(safe-area-inset-bottom,0px));margin:0 -16px;background:var(--bg);border-top:1px solid var(--line)}
.lp-foot.good{background:var(--ok-bg);border-top:2px solid var(--ok)}
.lp-foot.bad{background:var(--bad-bg);border-top:2px solid var(--bad)}
.lp-foot.ask p{margin:0}
.lp-actions{display:flex;gap:8px;flex-wrap:wrap}
.lp-feedback{display:grid;gap:6px}
.lp-feedback p{margin:0}
.lp-verdict{display:flex;align-items:center;gap:8px;font-family:var(--font-display);font-weight:700;font-size:24px}
.good .lp-verdict{color:var(--ok)}
.bad .lp-verdict{color:var(--bad)}
.lp-solution .pre{white-space:pre-line}
.lp-explain{color:var(--ink)}
.ex{display:grid;gap:14px}
.ex-type{margin:0;font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.ex-q{margin:0;font-family:var(--font-display);font-weight:700;font-size:clamp(23px,5.4vw,30px);line-height:1.15;text-wrap:balance}
.ex-hint{margin:0;font-size:14px;color:var(--muted)}
.ex-options{display:grid;gap:10px}
.ex-opt{display:flex;align-items:center;gap:12px;min-height:56px;padding:10px 14px;border-radius:12px;border:2px solid var(--line);border-bottom-width:4px;background:var(--paper);color:var(--ink);font:inherit;text-align:left;cursor:pointer}
.ex-opt:hover:not(:disabled){border-color:var(--ink)}
.ex-opt.sel{border-color:var(--live);background:var(--live-hot);color:#1c2528}
.ex-opt.right{border-color:var(--ok);background:var(--ok-bg);color:var(--ink)}
.ex-opt.wrong{border-color:var(--bad);background:var(--bad-bg);color:var(--ink)}
.ex-opt:disabled{cursor:default}
.ex-opt.big{justify-content:center;font-family:var(--font-display);font-weight:700;font-size:22px;letter-spacing:.04em;text-transform:uppercase}
.ex-opt.small{min-height:48px;font-size:15px}
.ex-key{flex:none;width:28px;height:28px;border-radius:6px;border:1.5px solid var(--line);display:grid;place-items:center;font-family:var(--font-display);font-weight:700;color:var(--muted)}
.ex-box{flex:none;width:22px;height:22px;border-radius:5px;border:2px solid var(--line)}
.ex-opt.sel .ex-box{background:var(--live);border-color:var(--live)}
.ex-tf{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.ex-order{display:grid;gap:14px}
.ex-line{list-style:none;margin:0;padding:12px;min-height:72px;border-radius:12px;border:2px dashed var(--line);display:grid;gap:8px}
.ex-empty{color:var(--muted);font-size:14px}
.ex-bank{display:flex;flex-wrap:wrap;gap:8px}
.ex-chip{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:8px 12px;border-radius:10px;border:2px solid var(--line);border-bottom-width:4px;background:var(--paper);color:var(--ink);font:inherit;text-align:left;cursor:pointer}
.ex-chip.in{width:100%}
.ex-chip.right{border-color:var(--ok);background:var(--ok-bg)}
.ex-chip.wrong{border-color:var(--bad);background:var(--bad-bg)}
.ex-n{font-family:var(--font-display);font-weight:700;color:var(--muted)}
.ex-match{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.ex-col{display:grid;gap:10px;align-content:start}
.shake{animation:shake .35s}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}
.num-row{display:flex;align-items:center;gap:10px}
.ex-input,.num-row input{flex:1;min-width:0;min-height:56px;padding:8px 14px;border-radius:12px;border:2px solid var(--line);background:var(--paper);color:var(--ink);font-family:var(--font-display);font-size:26px;font-weight:600}
.ex-input.right{border-color:var(--ok)}
.ex-input.wrong{border-color:var(--bad)}
.ex-unit,.num-row span{font-family:var(--font-display);font-weight:700;font-size:22px}
.lp-end{display:grid;justify-items:center;gap:12px;text-align:center;padding-top:40px}
.lp-end h1{margin:0;font-family:var(--font-display);font-weight:700;font-size:36px}
.lp-end p{margin:0;max-width:40ch;color:var(--muted)}
.lp-end-icon{width:96px;height:96px;border-radius:24px;display:grid;place-items:center}
.lp-end-icon.ok{background:var(--accent);color:var(--on-live)}
.lp-end-icon.bad{background:var(--locked);color:var(--locked-ink)}

/* ---------- Praxis allgemein ---------- */
.prax-head{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:8px;padding:8px 0;background:var(--bg)}
.prax-head h1{margin:0;font-family:var(--font-display);font-weight:700;font-size:22px;line-height:1.05}
.prax-body{display:block}
.prax{display:grid;gap:12px}
.prax-task{margin:0;max-width:72ch}
.prax-actions{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}
.prax-result:empty{display:none}
.prax-bad,.prax-ok{display:grid;gap:6px;padding:12px 14px;border-radius:10px}
.prax-bad{background:var(--bad-bg);border:1.5px solid var(--bad)}
.prax-ok{background:var(--ok-bg);border:1.5px solid var(--ok)}
.prax-bad ul{margin:0;padding-left:18px;display:grid;gap:4px}
.prax-bad p,.prax-ok p{margin:0}
.prax-ok .btn{justify-self:start}

/* Zählerschrank */
.zs-cab{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:8px;height:560px;padding:8px;border-radius:8px;border:2px solid var(--ink);background:var(--plate)}
.zs-col{display:flex;flex-direction:column;gap:8px;min-width:0}
.zs-zf{display:flex;flex-direction:column;gap:4px;flex:450 1 0;min-height:0}
.zs-zone{flex-basis:0;min-height:0;display:flex;flex-direction:column;gap:4px;padding:6px;border:1.5px solid var(--wire);border-radius:5px;background:var(--paper);overflow:auto;cursor:pointer}
.zs-zone.target{border-style:dashed;border-color:var(--live)}
.zs-zone.over{background:var(--live-hot);border-color:var(--live)}
.zs-zlabel{font-size:10px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);line-height:1.2}
.zs-zparts{display:flex;flex-wrap:wrap;gap:4px}
.zs-tray{display:flex;flex-wrap:wrap;gap:8px;min-height:48px;padding:8px;border-radius:8px;border:1.5px dashed var(--line)}
.zs-chip{min-height:40px;padding:6px 10px;border-radius:8px;border:1.5px solid var(--ink);background:var(--plate);color:var(--ink);font-family:var(--font-display);font-weight:600;font-size:14px;line-height:1.15;text-align:left;cursor:grab;touch-action:none}
.zs-zparts .zs-chip{min-height:30px;padding:4px 7px;font-size:12px;background:var(--ink);color:var(--plate)}
.zs-chip.sel{outline:3px solid var(--pick);outline-offset:1px}
.zs-chip.bad{border-color:var(--bad);box-shadow:0 0 0 2px var(--bad)}
.zs-ghost{position:fixed;z-index:60;transform:translate(-50%,-120%) rotate(-3deg);padding:8px 12px;border-radius:8px;background:var(--ink);color:var(--plate);font-family:var(--font-display);font-weight:600;pointer-events:none;box-shadow:0 12px 24px var(--shadow)}

/* Verteiler */
.vt-board{display:grid;gap:10px;padding:12px;border-radius:10px;background:var(--plate);border:2px solid var(--ink)}
.vt-row{display:grid;grid-template-columns:22px 1fr;gap:6px;align-items:center;padding:4px 0;border-radius:6px;cursor:pointer}
.vt-row.target{outline:2px dashed var(--live);outline-offset:2px}
.vt-rlabel{font-family:var(--font-display);font-weight:700;color:var(--muted);text-align:center}
.vt-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:2px;min-height:84px;padding:6px 0;background:linear-gradient(transparent 44%, var(--line) 44%, var(--line) 56%, transparent 56%)}
.vt-dev{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-height:76px;padding:4px 2px;border-radius:4px;border:1.5px solid var(--ink);background:var(--paper);color:var(--ink);font:inherit;cursor:pointer;overflow:hidden;min-width:0}
.vt-dev.k-hs{background:#2b3236;color:#f2f4f0}
.vt-dev.k-spd{background:#3c464c;color:#ffd24a}
.vt-dev.k-rcd{background:var(--tile-lock)}
.vt-dev.sel{outline:3px solid var(--pick);outline-offset:1px}
.vt-dev.pre{opacity:.85;cursor:default}
.vt-short{font-family:var(--font-display);font-weight:700;font-size:13px;line-height:1.05;text-align:center}
.vt-circ{font-size:10px;line-height:1.1;text-align:center;word-break:break-word;hyphens:auto}
.vt-te{font-size:10px;color:var(--muted)}
.vt-tray{display:flex;flex-wrap:wrap;gap:8px}
.vt-tray .vt-dev{width:96px;min-height:70px}
.vt-tools{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:8px 12px;border-radius:8px;border:1.5px solid var(--pick);background:var(--plate)}
.vt-selname{font-family:var(--font-display);font-weight:700;margin-right:auto}

/* Erdung */
.er-scene{width:100%;height:auto;max-height:260px;border-radius:8px;background:var(--paper);border:1px solid var(--line)}
.er-soil{fill:var(--soil);opacity:.35}
.er-ground{stroke:var(--ink);stroke-width:1.5}
.er-house{fill:var(--plate);stroke:var(--ink);stroke-width:1.5}
.er-roof{fill:none;stroke:var(--ink);stroke-width:1.5}
.er-erder{fill:var(--wire)}
.er-spike{stroke:var(--ink);stroke-width:3}
.er-spike.h{stroke:var(--c-n)}
.er-t{font:700 12px var(--font-display);fill:var(--ink);text-anchor:middle}
.er-ts{font:600 10px var(--font-display);fill:var(--muted);text-anchor:middle}
.er-meter{fill:var(--ink)}
.er-mt{font:700 12px var(--font-display);fill:var(--accent);text-anchor:middle}
.er-lead{fill:none;stroke:var(--c-l1);stroke-width:1.5}
.er-lead.s{stroke:var(--pick)}
.er-lead.h{stroke:var(--c-n)}
.er-open{fill:var(--ok)}
.er-closed{fill:var(--bad)}
.er-controls{display:grid;gap:8px;padding:12px;border-radius:10px;background:var(--plate);border:1px solid var(--line)}
.er-controls input[type="range"]{width:100%;accent-color:var(--live)}
.er-switch{display:flex;gap:10px;align-items:center;font-weight:600}
.er-switch input{width:22px;height:22px;accent-color:var(--ok)}
.er-controls .btn{justify-self:start}
.er-out{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:12px}
@media (max-width:620px){.er-out{grid-template-columns:1fr}}
.er-chart{width:100%;height:auto;border-radius:8px;background:var(--paper);border:1px solid var(--line)}
.er-axis{stroke:var(--muted);stroke-width:1}
.er-tick{font:600 10px var(--font-body);fill:var(--muted);text-anchor:middle}
.er-band{fill:var(--live-hot);opacity:.6}
.er-line{fill:none;stroke:var(--ink);stroke-width:1.5}
.er-dot{fill:var(--live);stroke:var(--ink);stroke-width:1}
.er-list{margin:0;padding-left:20px;font-size:14px;display:grid;gap:2px;align-content:start}
.er-answer{display:grid;gap:6px;max-width:360px}
.er-answer label{font-weight:600}

/* PV */
.pv-bar{display:flex;gap:8px;flex-wrap:wrap}
.pv-roof{width:100%;height:auto;border-radius:4px;cursor:crosshair;touch-action:manipulation}
.pv-tiles{fill:var(--roof)}
.pv-margin{fill:none;stroke:var(--live-hot);stroke-width:1.5;stroke-dasharray:5 4}
.pv-shade{fill:rgba(0,0,0,.28);stroke:rgba(0,0,0,.4);stroke-dasharray:3 3}
.pv-chimney{fill:#6b767b;stroke:#3c4549;stroke-width:2}
.pv-window{fill:#9fc3d9;stroke:var(--paper);stroke-width:2}
.pv-mod{fill:var(--module);stroke:var(--module-line);stroke-width:1;cursor:pointer}
.pv-mod.bad{fill:rgba(255,77,46,.35);stroke:#ff4d2e;stroke-width:2;stroke-dasharray:4 3}
.pv-scale{display:flex;justify-content:space-between;gap:8px;margin:0;font-size:12px;color:var(--muted);flex-wrap:wrap}
.pv-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.pv-stats div{display:grid;padding:10px 12px;border-radius:8px;background:var(--plate);border:1px solid var(--line);min-width:0}
.pv-stats b{font-family:var(--font-display);font-weight:700;font-size:22px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pv-note{margin:0;font-size:13px;color:var(--muted)}
.pv .s0{--s:var(--str1)}
.pv .s1{--s:var(--str2)}
.pv-steps{display:flex;gap:8px;flex-wrap:wrap}
.pv-hint{margin:0;font-size:14px;color:var(--muted)}
.pv-roof.wiring{cursor:default}
.pv-mod.in{stroke:var(--s);stroke-width:2.5}
.pv-line-under{fill:none;stroke:rgba(0,0,0,.55);stroke-width:7;stroke-linejoin:round;stroke-linecap:round;pointer-events:none}
.pv-line{fill:none;stroke:var(--s);stroke-width:3.5;stroke-linejoin:round;stroke-linecap:round;pointer-events:none}
.pv-node{fill:var(--s);pointer-events:none}
.pv-badge{pointer-events:none}
.pv-badge circle{fill:var(--s);stroke:#1c2528;stroke-width:1.5}
.pv-badge text{font:700 15px var(--font-body);fill:#1c2528;text-anchor:middle}
.pv-pick::before{content:"";width:12px;height:12px;border-radius:50%;background:var(--s);box-shadow:0 0 0 1.5px var(--plate)}
.pv-strings{display:grid;gap:6px}
.pv-strings:empty{display:none}
.pv-srow{display:flex;flex-wrap:wrap;align-items:center;gap:4px 12px;padding:8px 12px;border-radius:8px;background:var(--plate);border:1px solid var(--line);border-left:5px solid var(--s);font-size:14px}
.pv-srow b{font-family:var(--font-display);font-weight:600;font-size:16px}
.pv-free{margin:0;font-size:13px;color:var(--muted)}
.pill{display:inline-block;padding:1px 9px;border-radius:999px;font-size:12px;font-weight:700;background:var(--tile-lock);color:var(--muted)}
.pill.ok{background:var(--ok-bg);color:var(--ok)}
.pill.bad{background:var(--bad-bg);color:var(--bad)}
.pv-data{padding:8px 12px;border-radius:8px;background:var(--plate);border:1px solid var(--line);font-size:14px}
.pv-data summary{cursor:pointer;font-weight:600}
.pv-data table{margin-top:8px;border-collapse:collapse;width:100%}
.pv-data th,.pv-data td{padding:5px 8px 5px 0;vertical-align:top;text-align:left;border-top:1px solid var(--line)}
.pv-data th{font-weight:600;white-space:nowrap}
@media (max-width:520px){.pv-data th{white-space:normal}}

/* ---------- Schaltplan-Trainer ---------- */
.mode{display:flex;flex-direction:column;gap:14px}
.sheets{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scroll-snap-type:x proximity;scrollbar-width:thin}
.chip{flex:none;scroll-snap-align:start;display:grid;gap:3px;min-width:112px;padding:8px 11px 9px;text-align:left;border:1px solid var(--line);border-radius:8px;background:var(--plate);color:var(--ink);cursor:pointer;font:inherit}
.chip:hover{border-color:var(--ink)}
.chip[aria-current="true"]{border-color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--ink)}
.chip.free{border-style:dashed}
.chip-no{font-family:var(--font-display);font-weight:600;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.chip-name{font-family:var(--font-display);font-weight:600;font-size:17px;line-height:1.05;white-space:nowrap}
.chip-bolts,.mini-bolts{display:inline-flex;gap:1px;vertical-align:-2px;min-height:13px}
.chip-bolts svg,.mini-bolts svg{width:13px;height:13px}
.task{background:var(--plate);border:1px solid var(--line);border-radius:10px;padding:14px 18px 12px;display:grid;gap:8px}
.task-head{display:flex;align-items:center;justify-content:space-between;gap:8px 14px;flex-wrap:wrap}
.task h2{margin:0;font-family:var(--font-display);font-weight:700;font-size:28px;line-height:1;letter-spacing:.03em;text-wrap:balance}
.task p{margin:0;max-width:78ch}
.tip{color:var(--muted);font-size:14px}
.tip b{color:var(--ink);font-weight:600}
.aids{display:grid;gap:10px}
.bom{list-style:none;margin:4px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.bom li{border:1px solid var(--line);border-radius:6px;padding:3px 9px;font-size:14px;background:var(--paper)}
.bom li b{font-family:var(--font-display);font-size:15px;font-variant-numeric:tabular-nums;margin-right:5px}
.bom li.done{border-color:var(--ok);color:var(--ok)}
.bom li.over{border-color:var(--bad);color:var(--bad)}
.learn{border-top:1px solid var(--line);padding-top:8px}
.learn summary{cursor:pointer;font-weight:600;width:max-content;max-width:100%}
.learn dl{margin:8px 0 0;display:grid;gap:8px;max-width:78ch}
.learn dt{font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.learn dd{margin:2px 0 0}
.exam-note{font-size:14px;color:var(--muted);border-left:3px solid var(--live);padding-left:10px}
.task-meta{display:flex;flex-wrap:wrap;gap:4px 20px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:7px}
.task-meta b{color:var(--ink);font-family:var(--font-display);font-size:16px;font-weight:600;font-variant-numeric:tabular-nums}
.kit{display:grid;gap:6px}
.kit-head{display:flex;align-items:baseline;gap:4px 12px;flex-wrap:wrap}
.kit-head h3{margin:0}
.kit-head p{margin:0;font-size:13px;color:var(--muted)}
.parts{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin}
.part{flex:none;width:90px;display:grid;justify-items:center;gap:2px;padding:6px 4px 7px;border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--ink);cursor:grab;font:inherit;touch-action:pan-x;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.part:hover{border-color:var(--ink)}
.part canvas{width:60px;height:60px;pointer-events:none}
.part span{font-family:var(--font-display);font-weight:600;font-size:13px;line-height:1.1;text-align:center}
.part[aria-pressed="true"]{border-color:var(--pick);box-shadow:inset 0 0 0 2px var(--pick)}
.banner{display:flex;gap:10px 14px;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:10px 14px;border-radius:8px;background:var(--bad-bg);border:1.5px solid var(--bad)}
.banner p{margin:0;font-weight:500;min-width:0;flex:1 1 280px}
.sheet-wrap{position:relative;overflow-x:auto;border-radius:10px;background:var(--well);padding:8px}
.sheet-wrap:has(#sheet:focus-visible){outline:2.5px solid var(--ink);outline-offset:3px}
#sheet{display:block;margin-inline:auto;touch-action:pan-x pan-y;-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;user-select:none;-webkit-user-select:none;border-radius:3px}
#sheet:focus{outline:none}
.selbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;padding:8px 12px;border:1.5px solid var(--pick);border-radius:8px;background:var(--plate)}
.selbar .sel-name{font-family:var(--font-display);font-weight:700;font-size:17px;letter-spacing:.03em;margin-right:4px}
.selbar .sel-note{font-size:13px;color:var(--muted)}
.ops{display:flex;flex-wrap:wrap;gap:10px 16px;justify-content:space-between;align-items:flex-start}
.ops-group{display:flex;flex-wrap:wrap;gap:8px;min-width:0}
.dev{display:grid;text-align:left;min-height:46px;padding:5px 12px 6px;border:1.5px solid var(--ink);border-radius:6px;background:transparent;color:var(--ink);cursor:pointer;font:inherit;touch-action:manipulation;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.dev:hover:not(:disabled){background:var(--plate)}
.dev-id{font-family:var(--font-display);font-weight:700;font-size:15px;letter-spacing:.04em;line-height:1.2}
.dev-state{font-size:12px;color:var(--muted);line-height:1.2}
.dev[aria-pressed="true"]{background:var(--ink);color:var(--plate)}
.dev[aria-pressed="true"] .dev-state{color:inherit;opacity:.8}
.dev.is-down{background:var(--live);border-color:var(--live);color:var(--on-live)}
.dev.is-down .dev-state{color:inherit}
.dev:disabled{opacity:.45;cursor:default}
.msg{margin:0;min-height:1.5em;font-size:14px;color:var(--muted)}
.protocol{background:var(--plate);border:1px solid var(--line);border-radius:8px;padding:14px 18px;display:grid;gap:8px}
.protocol-head{display:flex;align-items:baseline;gap:6px 14px;flex-wrap:wrap}
.protocol h3{margin:0;font-family:var(--font-display);font-weight:700;font-size:22px;letter-spacing:.05em;text-transform:uppercase}
.verdict{font-family:var(--font-display);font-weight:700;font-size:18px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);flex:1 1 auto}
.verdict.ok{color:var(--ok)}
.verdict.bad{color:var(--bad)}
.steps{list-style:none;margin:0;padding:0;display:grid}
.steps li{display:grid;grid-template-columns:26px minmax(0,1fr);gap:2px 8px;padding:6px 0;border-top:1px solid var(--line)}
.steps li.grp{display:block;padding:10px 0 2px;border-top:0;font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.steps .mark{font-family:var(--font-display);font-weight:700;font-size:17px;line-height:1.35;text-align:center}
.steps li.todo{color:var(--muted)}
.steps li.ok .mark{color:var(--ok)}
.steps li.bad .mark{color:var(--bad)}
.steps li.bad .say{font-weight:600}
.steps .err{grid-column:2;color:var(--bad);font-size:14px}
.protocol-foot{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;border-top:1px solid var(--line);padding-top:10px}
.protocol-foot p{margin:0;flex:1 1 260px;min-width:0;font-size:14px;color:var(--muted)}
.bolts{display:flex;gap:4px}
.bolt{width:30px;height:30px}
.bolt path{fill:none;stroke:var(--line);stroke-width:1.6;stroke-linejoin:round}
.bolt.on path{fill:var(--live);stroke:var(--live)}
.help{display:grid;gap:8px;font-size:14px;color:var(--muted);width:100%;max-width:72ch}
.help p{margin:0}
.help b{color:var(--ink);font-weight:600}

/* ---------- Netz-Puzzle ---------- */
.net-wrap{width:100%;max-width:560px;margin-inline:auto;display:flex;flex-direction:column;gap:14px}
.plate{position:relative;background:var(--plate);border:1px solid var(--line);border-radius:8px;padding:14px 28px 12px;display:grid;gap:12px}
.plate::before,.plate::after{content:"";position:absolute;top:50%;width:9px;height:9px;margin-top:-4.5px;border-radius:50%;background:var(--tile-lock);border:1.5px solid var(--line)}
.plate::before{left:9px}
.plate::after{right:9px}
.plate-top{display:flex;align-items:flex-end;justify-content:space-between;gap:12px 16px;flex-wrap:wrap}
.rating{margin:7px 0 0;font-family:var(--font-display);font-weight:500;font-size:14px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.level{display:flex;align-items:center;gap:8px}
.level-read{display:flex;flex-direction:column;align-items:center;line-height:1;gap:2px}
.level output{font-family:var(--font-display);font-weight:700;font-size:28px;font-variant-numeric:tabular-nums;min-width:2ch;text-align:center}
.specs{margin:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);padding-top:8px}
.spec{padding-inline:10px;border-left:1px solid var(--line);min-width:0}
.spec:first-child{padding-left:0;border-left:0}
.spec dt{font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.spec dd{margin:0;font-family:var(--font-display);font-weight:600;font-size:24px;line-height:1.15;font-variant-numeric:tabular-nums;white-space:nowrap}
.board{position:relative;width:min(100%,max(288px,calc(100vh - 300px)));max-width:100%;aspect-ratio:1/1;margin-inline:auto;padding:8px;background:var(--well);border-radius:12px}
.board:has(#board:focus-visible){outline:2.5px solid var(--ink);outline-offset:3px}
#board{display:block;width:100%;height:100%;touch-action:manipulation;-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;user-select:none;-webkit-user-select:none;cursor:pointer}
#board:focus{outline:none}
.win{position:absolute;inset:0;display:grid;place-items:center;padding:16px;background:var(--scrim);border-radius:12px;animation:fade .3s ease-out}
.win-card{width:100%;max-width:330px;background:var(--plate);border:1px solid var(--line);border-radius:10px;padding:20px 22px;display:grid;gap:10px;box-shadow:0 14px 34px var(--shadow);animation:rise .35s ease-out}
.win-card h2{margin:0;font-family:var(--font-display);font-weight:700;font-size:36px;line-height:1;letter-spacing:.03em}
.win-card p{margin:0}
.win-stats{margin:0;display:grid;grid-template-columns:1fr 1fr;gap:8px;border-block:1px solid var(--line);padding-block:8px}
.win-stats dt{font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.win-stats dd{margin:0;font-family:var(--font-display);font-weight:600;font-size:22px;font-variant-numeric:tabular-nums}
.win-note{font-size:14px;color:var(--muted)}
.win-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.win-actions .primary{flex:1 1 100%}
.controls{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.legend{display:flex;gap:6px 18px;flex-wrap:wrap;color:var(--ink);font-weight:500}
.legend span{display:inline-flex;align-items:center;gap:6px}
.sym{width:20px;height:20px;flex:none}
.sym-src{fill:var(--live);stroke:var(--on-live);stroke-width:1.4}
.sym-wave{fill:none;stroke:var(--on-live);stroke-width:1.6;stroke-linecap:round}
.sym-lamp{fill:var(--lamp);stroke:var(--live);stroke-width:1.5}
.sym-x{stroke:var(--filament);stroke-width:1.5}
.sym-wire{stroke:var(--wire);stroke-width:2.6;fill:none}
.sym-dot{fill:var(--wire)}
kbd{font-family:var(--font-display);font-size:13px;font-weight:600;padding:0 6px;border:1px solid var(--line);border-bottom-width:2px;border-radius:4px;background:var(--plate);color:var(--ink)}
@keyframes fade{from{opacity:0}}
@keyframes rise{from{opacity:0;transform:translateY(10px)}}

@media (prefers-reduced-motion: reduce){
  .node-ring,.win,.win-card,.shake{animation:none}
  .switch-knob::after,.lp-fill{transition:none}
}
@media (max-width:420px){
  .top-stats{gap:10px;font-size:16px}
  .tiles .tile b{font-size:22px}
  .zs-cab{height:500px}
  .plate{padding-inline:22px}
  .spec{padding-inline:7px}
  .spec dd{font-size:21px}
  .part{width:80px}
}