/* e-swarm Kundenportal – Energie & Wärme */
:root {
  --bg: #0b0f17; --bg2: #101623; --card: rgba(255,255,255,.045); --card2: rgba(255,255,255,.08); --line: rgba(255,255,255,.09);
  --fg: #eef2f8; --fg2: #aab4c5; --mut: #6f7b8f;
  --sun: #ffc93c; --sun2: #ff9f1c; --grid: #8a9bb8; --bat: #3ddc97; --house: #5aa9ff; --heat: #ff5d73; --cold: #4fc3f7;
  --export: #b28dff; --ok: #3ddc97; --warn: #ffb547; --bad: #ff5d73;
  --r: 18px; --shadow: 0 10px 40px rgba(0,0,0,.35);
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: light) {
  :root { --bg: #f3f5f9; --bg2: #e9edf4; --card: rgba(255,255,255,.85); --card2: #fff; --line: rgba(20,30,50,.09);
    --fg: #121826; --fg2: #46516a; --mut: #7d889c; --grid: #5f6f8c; --shadow: 0 10px 30px rgba(30,40,70,.10); }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--fg); font: 15px/1.45 var(--font); -webkit-font-smoothing: antialiased; }
body { min-height: 100vh; background:
  radial-gradient(1200px 600px at 10% -10%, rgba(255,201,60,.10), transparent 60%),
  radial-gradient(900px 500px at 110% 10%, rgba(90,169,255,.10), transparent 60%), var(--bg); background-attachment: fixed; }
a { color: inherit; }
button { font: inherit; color: inherit; border: 0; border-radius: 12px; padding: 9px 16px; cursor: pointer; background: linear-gradient(135deg, var(--sun), var(--sun2)); color: #1b1407; font-weight: 650; }
button.ghost { background: var(--card); color: var(--fg2); border: 1px solid var(--line); font-weight: 500; }
button.seg { background: transparent; color: var(--fg2); padding: 6px 12px; border-radius: 9px; font-weight: 550; }
button.seg.act { background: var(--card2); color: var(--fg); box-shadow: 0 1px 6px rgba(0,0,0,.18); }
input { font: inherit; color: var(--fg); background: var(--card2); border: 1px solid var(--line); border-radius: 12px; padding: 11px 14px; width: 100%; }

/* Kopf */
.top { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 18px; padding: 12px max(16px, calc((100vw - 1240px) / 2));
  backdrop-filter: blur(18px) saturate(1.4); background: color-mix(in srgb, var(--bg) 72%, transparent); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand b { display: block; font-size: 1.02rem; letter-spacing: .01em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.brand span { display: block; font-size: .72rem; color: var(--mut); text-transform: uppercase; letter-spacing: .12em; }
nav { display: flex; gap: 4px; background: var(--card); border: 1px solid var(--line); border-radius: 13px; padding: 4px; margin-left: auto; }
nav a { text-decoration: none; padding: 7px 16px; border-radius: 10px; color: var(--fg2); font-weight: 600; font-size: .92rem; }
nav a.act { background: var(--card2); color: var(--fg); box-shadow: 0 1px 8px rgba(0,0,0,.2); }
.topright { display: flex; align-items: center; gap: 10px; }
.live { width: 9px; height: 9px; border-radius: 50%; background: var(--mut); }
.live.on { background: var(--ok); box-shadow: 0 0 0 0 rgba(61,220,151,.6); animation: pulse 2.4s infinite; }
.live.bad { background: var(--bad); }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(61,220,151,.55); } 70% { box-shadow: 0 0 0 10px rgba(61,220,151,0); } 100% { box-shadow: 0 0 0 0 rgba(61,220,151,0); } }

main { max-width: 1240px; margin: 0 auto; padding: 22px 16px 60px; }
.loading { color: var(--mut); padding: 80px 0; text-align: center; }
.grid { display: grid; gap: 16px; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 900px) { .g3, .g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .g2 { grid-template-columns: 1fr; } }
.kpis { grid-template-columns: 1fr 1fr; }
.mobile-only { display: none; }
@media (max-width: 640px) { .mobile-only { display: block; } }
@media (max-width: 640px) {
  .top { flex-wrap: wrap; row-gap: 8px; }
  nav { order: 3; width: 100%; margin-left: 0; justify-content: center; }
  nav a { flex: 1; text-align: center; padding: 7px 10px; }
  .topright { margin-left: auto; }
  .card h2 { flex-wrap: wrap; row-gap: 8px; }
  .card { padding: 16px; }
  .flow .node-l { font-size: 21px; } .flow .node-v { font-size: 27px; } .flow .node-s { font-size: 15px; }
  #scene { overflow-x: auto; margin: 0 -16px; padding: 0 16px; -webkit-overflow-scrolling: touch; }
  #scene svg { min-width: 880px; }
}
@media (max-width: 520px) { .g4, .g3 { grid-template-columns: 1fr 1fr; } .brand span { display: none; } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 18px 20px; box-shadow: var(--shadow); min-width: 0; }
.card h2 { margin: 0 0 12px; font-size: .78rem; text-transform: uppercase; letter-spacing: .12em; color: var(--mut); font-weight: 650; display: flex; align-items: center; gap: 10px; }
.card h2 .sp, .row .sp { flex: 1; }
.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.mut { color: var(--mut); }
.small { font-size: .82rem; }
.hint { display: flex; gap: 10px; align-items: flex-start; padding: 11px 14px; border-radius: 13px; background: rgba(255,181,71,.10); color: var(--fg2); font-size: .86rem; border: 1px solid rgba(255,181,71,.22); }
.hint b { color: var(--fg); }
.seggroup { display: inline-flex; gap: 2px; background: var(--bg2); border-radius: 11px; padding: 3px; }

/* Kennzahlen */
.kpi { display: flex; flex-direction: column; gap: 2px; }
.kpi .l { font-size: .74rem; color: var(--mut); text-transform: uppercase; letter-spacing: .1em; font-weight: 600; }
.kpi .v { font-size: 1.7rem; font-weight: 720; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.kpi .v small { font-size: .9rem; color: var(--fg2); font-weight: 550; margin-left: 3px; }
.kpi .s { font-size: .8rem; color: var(--fg2); }
.ring { position: relative; width: 92px; height: 92px; flex: none; }
.ring svg { transform: rotate(-90deg); }
.ring b { position: absolute; inset: 0; display: grid; place-items: center; font-size: 1.15rem; font-weight: 720; }
.kpirow { display: flex; align-items: center; gap: 16px; }

/* Energiefluss */
.flow { position: relative; }
.flow svg { width: 100%; height: auto; display: block; overflow: visible; }
.node-c { fill: var(--bg2); stroke-width: 2.5; }
.node-l { font-size: 15px; fill: var(--fg2); font-weight: 600; text-anchor: middle; letter-spacing: .02em; }
.node-v { font-size: 26px; fill: var(--fg); font-weight: 760; text-anchor: middle; font-variant-numeric: tabular-nums; letter-spacing: -.02em; }
.node-s { font-size: 13px; fill: var(--mut); text-anchor: middle; }
.wire { fill: none; stroke: var(--line); stroke-width: 3; stroke-linecap: round; }
.wire.on { stroke-opacity: .55; }
.dot { filter: drop-shadow(0 0 6px currentColor); }
.glow { animation: glow 2s ease-in-out infinite; }
@keyframes glow { 50% { opacity: .55; } }

/* Diagramme */
.chart { position: relative; width: 100%; user-select: none; }
.chart svg { display: block; width: 100%; }
.chart .ax { font-size: 11px; fill: var(--mut); font-variant-numeric: tabular-nums; }
.chart .gl { stroke: var(--line); stroke-width: 1; }
.tip { position: absolute; pointer-events: none; background: var(--bg2); border: 1px solid var(--line); border-radius: 12px; padding: 9px 12px; font-size: .8rem; box-shadow: var(--shadow); min-width: 150px; z-index: 3; display: none; }
.tip div { display: flex; gap: 8px; align-items: center; justify-content: space-between; }
.tip i { width: 9px; height: 9px; border-radius: 3px; display: inline-block; }
.legend { display: flex; gap: 16px; flex-wrap: wrap; font-size: .82rem; color: var(--fg2); margin-top: 8px; }
.legend i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; margin-right: 6px; vertical-align: -1px; }

/* Heizung */
.scene svg { width: 100%; height: auto; display: block; }
.scene .lbl { font-size: 13px; fill: var(--fg2); font-weight: 600; letter-spacing: .03em; }
.scene .big { font-size: 22px; fill: var(--fg); font-weight: 760; font-variant-numeric: tabular-nums; }
.scene .mid { font-size: 15px; fill: var(--fg); font-weight: 650; font-variant-numeric: tabular-nums; }
.scene .tiny { font-size: 11px; fill: var(--mut); }
.scene .house { fill: var(--card); stroke: var(--line); stroke-width: 1.5; }
.scene .roof { fill: color-mix(in srgb, var(--bg2) 80%, var(--fg) 6%); stroke: var(--line); }
.pipe { fill: none; stroke-width: 7; stroke-linecap: round; stroke-linejoin: round; }
.pipe-flow { fill: none; stroke-width: 3; stroke-linecap: round; stroke-dasharray: 2 16; stroke: rgba(255,255,255,.75); }
.pipe-flow.run { animation: flowdash 1.1s linear infinite; }
.pipe-flow.slow { animation-duration: 2.4s; }
@keyframes flowdash { to { stroke-dashoffset: -18; } }
.pump .rotor { transform-box: fill-box; transform-origin: center; }
.pump.on .rotor { animation: spin 1.2s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.flame { transform-box: fill-box; transform-origin: bottom center; animation: flick .8s ease-in-out infinite alternate; }
@keyframes flick { from { transform: scaleY(.88) skewX(-3deg); } to { transform: scaleY(1.08) skewX(3deg); } }
.rod.on { animation: glow 1.3s ease-in-out infinite; }
.circ { display: flex; flex-direction: column; gap: 10px; }
.circ .head { display: flex; align-items: center; gap: 10px; }
.circ .head b { font-size: 1.1rem; }
.circ .temp { font-size: 2.3rem; font-weight: 760; letter-spacing: -.03em; font-variant-numeric: tabular-nums; line-height: 1; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { font-size: .78rem; padding: 4px 9px; border-radius: 999px; background: var(--bg2); color: var(--fg2); border: 1px solid var(--line); font-variant-numeric: tabular-nums; }
.chip.on { color: var(--ok); border-color: rgba(61,220,151,.35); }
.chip.hot { color: var(--heat); border-color: rgba(255,93,115,.35); }
.thermo { height: 8px; border-radius: 999px; background: linear-gradient(90deg, var(--cold), #7ee0c3, var(--sun), var(--sun2), var(--heat)); position: relative; }
.thermo i { position: absolute; top: -4px; width: 4px; height: 16px; border-radius: 3px; background: var(--fg); box-shadow: 0 0 0 3px var(--bg); }

/* Anmeldung */
.login { max-width: 400px; margin: 10vh auto; text-align: center; }
.login .card { padding: 34px 30px; }
.login h1 { margin: 14px 0 4px; font-size: 1.5rem; }
.login p { color: var(--fg2); margin: 0 0 22px; }
.login form { display: grid; gap: 12px; }
.err { color: var(--bad); font-size: .9rem; min-height: 1.2em; }
.fade { animation: fade .5s ease both; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } }

.stack { display: flex; flex-direction: column; gap: 14px; }
.invrow + .invrow { border-top: 1px solid var(--line); padding-top: 12px; }
.bar { height: 6px; border-radius: 999px; background: var(--bg2); overflow: hidden; margin-top: 8px; }
.bar i { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--sun), var(--sun2)); }
.pbar { position: relative; height: 10px; border-radius: 999px; background: var(--bg2); margin-top: 6px; overflow: hidden; }
.pbar::after { content: ""; position: absolute; left: 50%; top: -2px; bottom: -2px; width: 2px; background: var(--line); }
.pbar i { position: absolute; top: 0; bottom: 0; border-radius: 999px; }