:root{
  --bg:#f3f5f7; --card:#fff; --text:#1c1f23; --muted:#667085; --line:#e2e6ea; --accent:#03a9f4; --accent-text:#fff;
  --ok:#2e9e5b; --warn:#f59e0b; --err:#d92d20; --hover:#eef6fb; --sketch:#1c1f23; --sketch-bg:#fff; --shadow:0 1px 3px rgba(16,24,40,.12);
}
@media (prefers-color-scheme:dark){:root{
  --bg:#111418; --card:#1c2026; --text:#e6e9ee; --muted:#98a2b3; --line:#2c323a; --hover:#232a33; --sketch:#e6e9ee; --sketch-bg:#161a1f; --shadow:0 1px 3px rgba(0,0,0,.5);
}}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{font:14px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text)}
#app{height:100%;display:flex}
h1{font-size:20px;margin:0;font-weight:500} h2{font-size:16px;margin:0 0 10px;font-weight:500} h3{font-size:13px;margin:14px 0 6px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.04em}
a{color:var(--accent);cursor:pointer;text-decoration:none}
.muted{color:var(--muted)} .small{font-size:12px} .grow{flex:1} .row{display:flex;gap:8px;align-items:center} .wrap{flex-wrap:wrap} .right{margin-left:auto}
.hidden{display:none!important}

/* Navigation */
nav{width:210px;background:var(--card);border-right:1px solid var(--line);display:flex;flex-direction:column;flex-shrink:0}
nav .brand{padding:16px 18px;font-size:18px;font-weight:600;display:flex;gap:10px;align-items:center}
nav .brand svg{color:var(--accent)}
nav a{display:flex;gap:14px;align-items:center;padding:10px 18px;color:var(--text);border-radius:0 22px 22px 0;margin-right:10px}
nav a:hover{background:var(--hover)} nav a.on{background:color-mix(in srgb,var(--accent) 16%,transparent);color:var(--accent);font-weight:500}
nav .foot{margin-top:auto;padding:12px 18px;border-top:1px solid var(--line)}
svg.ic{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
main{flex:1;min-width:0;display:flex;flex-direction:column;height:100%}
.top{display:flex;gap:10px;align-items:center;padding:10px 18px;background:var(--card);border-bottom:1px solid var(--line);min-height:56px;flex-wrap:wrap}
.page{padding:18px;overflow:auto;flex:1}

/* Bausteine */
.card{background:var(--card);border-radius:12px;box-shadow:var(--shadow);padding:16px;margin-bottom:16px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
button,.btn{font:inherit;border:0;border-radius:8px;padding:7px 14px;background:transparent;color:var(--accent);cursor:pointer;font-weight:500;display:inline-flex;gap:6px;align-items:center;white-space:nowrap}
button:hover{background:color-mix(in srgb,var(--accent) 12%,transparent)}
button.primary{background:var(--accent);color:var(--accent-text)} button.primary:hover{filter:brightness(1.08)}
button.danger{color:var(--err)} button.danger:hover{background:color-mix(in srgb,var(--err) 12%,transparent)}
button.icon{padding:6px;border-radius:50%;color:var(--muted)}
button:disabled{opacity:.45;cursor:default}
input,select,textarea{font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:7px 10px;width:100%;min-width:0}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:-1px}
input[type=checkbox]{width:auto} input[type=range]{padding:0} input[type=color]{padding:2px;height:34px}
label.f{display:block;margin-bottom:10px} label.f>span{display:block;font-size:12px;color:var(--muted);margin-bottom:3px}
.top input,.top select{width:auto}
table{width:100%;border-collapse:collapse}
th{text-align:left;font-size:12px;color:var(--muted);font-weight:600;padding:8px 10px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:middle}
tr.click{cursor:pointer} tr.click:hover{background:var(--hover)}
.tag{display:inline-block;font-size:11px;padding:1px 8px;border-radius:10px;background:var(--hover);color:var(--muted);white-space:nowrap}
.tag.ok{background:color-mix(in srgb,var(--ok) 18%,transparent);color:var(--ok)} .tag.warn{background:color-mix(in srgb,var(--warn) 22%,transparent);color:var(--warn)}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:12px}
.tabs a{padding:8px 14px;color:var(--muted);border-bottom:2px solid transparent} .tabs a.on{color:var(--accent);border-color:var(--accent)}
.empty{text-align:center;color:var(--muted);padding:40px 20px}
.dot{width:10px;height:10px;border-radius:50%;display:inline-block}

/* Dialoge */
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:flex-start;justify-content:center;padding:5vh 16px;z-index:50;overflow:auto}
.dialog{background:var(--card);border-radius:14px;box-shadow:0 12px 40px rgba(0,0,0,.35);width:440px;max-width:100%;display:flex;flex-direction:column}
.dialog.wide{width:1080px} .dialog.mid{width:680px}
.dialog>header{display:flex;align-items:center;padding:14px 18px 6px;gap:10px} .dialog>header h2{margin:0;flex:1;font-size:18px}
.dialog>.body{padding:10px 18px}
.dialog>footer{display:flex;gap:8px;justify-content:flex-end;padding:10px 14px 14px}
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#323a45;color:#fff;padding:10px 18px;border-radius:8px;z-index:99;box-shadow:var(--shadow)}
.toast.err{background:var(--err)}
.pop{position:fixed;z-index:60;background:var(--card);border-radius:12px;box-shadow:0 6px 24px rgba(0,0,0,.3);padding:12px 14px;width:290px;border:1px solid var(--line)}
.pop b{font-weight:600}
.cols2{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}

/* Anmeldung */
.login{margin:auto;width:340px}
.login .brand{font-size:22px;font-weight:600;display:flex;gap:10px;align-items:center;justify-content:center;margin-bottom:14px} .login .brand svg{color:var(--accent);width:28px;height:28px}

/* Plan */
.planwrap{flex:1;display:flex;min-height:0}
.side{width:230px;background:var(--card);border-right:1px solid var(--line);overflow:auto;padding:10px;flex-shrink:0}
.side .item{display:flex;gap:8px;align-items:center;padding:6px 8px;border-radius:8px;cursor:grab;border:1px dashed var(--line);margin-bottom:6px;background:var(--bg)}
.side .item:hover{border-color:var(--accent)}
.canvas{flex:1;position:relative;overflow:hidden;background:repeating-conic-gradient(var(--bg) 0 25%,color-mix(in srgb,var(--line) 40%,var(--bg)) 0 50%) 0 0/24px 24px;touch-action:none}
.canvas svg.plan{position:absolute;inset:0;width:100%;height:100%;user-select:none}
.canvas.draw{cursor:crosshair}
.banner{position:absolute;top:12px;left:50%;transform:translateX(-50%);background:var(--accent);color:#fff;padding:8px 16px;border-radius:20px;box-shadow:var(--shadow);display:flex;gap:10px;align-items:center;z-index:5;white-space:nowrap}
.banner button{color:#fff;padding:2px 10px;background:rgba(255,255,255,.2)}
.loc{fill-opacity:.14;stroke-width:2;vector-effect:non-scaling-stroke;cursor:pointer} .loc:hover,.loc.sel{fill-opacity:.3}
.loclabel{font-weight:600;text-anchor:middle;pointer-events:none;paint-order:stroke;stroke:var(--card);stroke-width:3px}
.marker{cursor:pointer} .marker text{font-size:11px;text-anchor:middle;fill:var(--text);paint-order:stroke;stroke:var(--card);stroke-width:3px;font-weight:500}
.marker .bg{stroke:#fff;stroke-width:2} .marker.sel .bg{stroke:var(--warn);stroke-width:4}
.marker .gl{fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.panel{width:640px;max-width:60vw;background:var(--card);border-left:1px solid var(--line);overflow:auto;padding:14px;flex-shrink:0}
.panel.big{width:1100px;max-width:75vw}
.zoomctl{position:absolute;right:12px;bottom:12px;display:flex;flex-direction:column;background:var(--card);border-radius:10px;box-shadow:var(--shadow);z-index:4}

/* Rack */
.rack{position:relative;border:2px solid var(--muted);border-radius:6px;background:var(--sketch-bg)}
.rack .u{position:absolute;left:0;right:0;border-bottom:1px dashed var(--line);display:flex}
.rack .u .n{width:26px;font-size:10px;color:var(--muted);text-align:center;align-self:center;flex-shrink:0}
.rack .u.over{background:color-mix(in srgb,var(--accent) 25%,transparent)}
.rack .dev{position:absolute;left:26px;display:flex}
.rack .dev .sk{border:1px solid var(--sketch);background:var(--sketch-bg);border-radius:3px;overflow:hidden;cursor:grab}
.rack .dev.hl .sk{outline:3px solid var(--warn)}
.rack .dev .nm{width:120px;padding:0 8px;font-size:12px;display:flex;flex-direction:column;justify-content:center;overflow:hidden;line-height:1.2}
.rack .dev .nm a{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* Skizzen */
svg.sketch{display:block;width:100%;height:100%;color:var(--sketch)}
svg.sketch .chassis{fill:none;stroke:currentColor;stroke-width:2}
svg.sketch .port{fill:var(--sketch-bg);stroke:currentColor;stroke-width:1.5;cursor:pointer}
svg.sketch .port.con{fill:var(--ok);fill-opacity:.55}
svg.sketch .port:hover{stroke:var(--accent);stroke-width:3}
svg.sketch .port.hl{fill:var(--warn);fill-opacity:.9;stroke:var(--warn);stroke-opacity:1;animation:pulse 1s infinite}
svg.sketch text{fill:currentColor;text-anchor:middle;pointer-events:none;font-family:system-ui,sans-serif}
svg.sketch .glabel{font-size:11px;opacity:.7}
@media (prefers-color-scheme:dark){svg.sketch image{filter:invert(1)}}
@keyframes pulse{50%{fill-opacity:.35}}
.skbox{border:1px solid var(--line);border-radius:8px;padding:8px;background:var(--sketch-bg)}

/* Skizzen-Editor */
.edwrap{position:relative;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff;user-select:none;touch-action:none}
.edwrap canvas,.edwrap img{display:block;width:100%;pointer-events:none;-webkit-user-drag:none}
.edwrap .sel{position:absolute;border:2px dashed var(--accent);background:rgba(3,169,244,.15);pointer-events:none}
.edwrap .hs{position:absolute;border:1.5px solid var(--ok);background:rgba(46,158,91,.25);font-size:9px;color:#064;overflow:hidden;display:flex;align-items:center;justify-content:center;cursor:pointer}
.edwrap .hs:hover{border-color:var(--err);background:rgba(217,45,32,.3)}
td button{padding:4px 10px} td button.icon{padding:5px}

/* Verkabelungsmodus */
.seg{display:flex;border:1px solid var(--line);border-radius:9px;overflow:hidden}
.seg button{border-radius:0;color:var(--muted);padding:6px 12px} .seg button.on{background:color-mix(in srgb,var(--accent) 16%,transparent);color:var(--accent)}
.canvas.cabling .marker{opacity:.75} .canvas.cabling .loc{fill-opacity:.05;stroke-opacity:.4;pointer-events:none} .canvas.cabling .loclabel:not(.rlabel){opacity:.45}
.route{fill:none;stroke-width:3;vector-effect:non-scaling-stroke;stroke-linejoin:round;stroke-linecap:round;pointer-events:none}
.route.lwl{stroke-dasharray:9 5} .route.sel{stroke-width:6}
.routehit{fill:none;stroke:transparent;stroke-width:16;vector-effect:non-scaling-stroke;pointer-events:stroke;cursor:pointer}
.hnd circle{fill:#fff;stroke:var(--accent);stroke-width:2.5;cursor:move} .hnd.mid circle{stroke-width:1.5;opacity:.75} .hnd.link circle{fill:var(--accent);stroke:#fff}
.lvl{cursor:pointer} .lvl text{fill:#fff;font-size:11px;font-weight:600;text-anchor:middle;pointer-events:none}
.ctl3d{position:absolute;left:12px;bottom:12px;display:flex;gap:14px;align-items:center;background:var(--card);border-radius:10px;box-shadow:var(--shadow);padding:6px 12px;z-index:4;flex-wrap:wrap}
/* Fasertyp an LWL-Anschlüssen: Singlemode gelb, Multimode türkis (wie die üblichen Kabelfarben) */
svg.sketch .port.sm{stroke:#d9a400;stroke-width:3} svg.sketch .port.mm{stroke:#00a3ad;stroke-width:3}
.tag.sm{background:#d9a40033;color:#9a7400} .tag.mm{background:#00a3ad33;color:#007a82}
@media (prefers-color-scheme:dark){.tag.sm{color:#f2c744} .tag.mm{color:#4fd6de}}
/* Planteile anordnen */
.partbox{fill:none;stroke:var(--accent);stroke-width:1.5;vector-effect:non-scaling-stroke;stroke-dasharray:6 4;pointer-events:none} .partbox.sel{stroke-dasharray:none;stroke-width:2.5}
.phnd rect{fill:#fff;stroke:var(--accent);stroke-width:2.5;cursor:nwse-resize}
.canvas.arrange image{cursor:move} .canvas.arrange .marker,.canvas.arrange .loc,.canvas.arrange .loclabel{pointer-events:none;opacity:.35}
/* Passwortfeld mit Auge */
.pw{position:relative;display:block} .pw input{padding-right:38px} .pw .eye{position:absolute;right:3px;top:50%;transform:translateY(-50%);padding:5px}