:root {
  --bg: #f5f6f4; --card: #ffffff; --text: #1d2320; --muted: #66706b; --line: #e2e5e1;
  --accent: #1f6f5c; --accent-2: #e9f3ef; --on-accent: #ffffff; --danger: #b3261e; --warn: #9a6700; --ok: #1e7b34;
  --pv: #e3a008; --akku: #2f80c3; --netz: #8a5a9e; --unknown: #9aa19d; --ohm: #d64545;
  --radius: 12px; --shadow: 0 1px 2px rgba(0,0,0,.05), 0 2px 8px rgba(0,0,0,.04);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111513; --card: #1a201d; --text: #e7ebe8; --muted: #9aa49f; --line: #2a322e;
    --accent: #5cc3a5; --accent-2: #1d2d27; --on-accent: #0c1411; --danger: #ff8a80; --warn: #e6b450; --ok: #6fd28a;
    --pv: #f2c14e; --akku: #6fb2ec; --netz: #c39bd6; --unknown: #6f7773; --ohm: #ff7b72;
    --shadow: none; color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body { font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
header.top { position: sticky; top: 0; z-index: 5; background: var(--card); border-bottom: 1px solid var(--line); }
header.top .inner { max-width: 1100px; margin: 0 auto; padding: 10px 16px; display: flex; gap: 12px 16px; align-items: center; flex-wrap: wrap; }
header.top .brand { font-weight: 700; color: var(--text); text-decoration: none; }
header.top nav { display: flex; gap: 4px; flex-wrap: wrap; flex: 1; }
header.top nav a { text-decoration: none; color: var(--muted); padding: 6px 10px; border-radius: 8px; }
header.top nav a.active, header.top nav a:hover { color: var(--text); background: var(--accent-2); }
header.top .user { color: var(--muted); font-size: 13px; display: flex; gap: 8px; align-items: center; }
main { max-width: 1100px; margin: 0 auto; padding: 16px; }
h1 { font-size: 22px; margin: 4px 0 16px; }
h2 { font-size: 17px; margin: 0 0 12px; }
h3 { font-size: 15px; margin: 16px 0 8px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); margin-bottom: 16px; }
.grid { display: grid; gap: 16px; }
.grid.tiles { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.tile .label { color: var(--muted); font-size: 13px; }
.tile .big { font-size: 28px; font-weight: 650; font-variant-numeric: tabular-nums; margin: 2px 0 8px; }
.bar { display: flex; height: 10px; border-radius: 5px; overflow: hidden; background: var(--line); }
.bar span { display: block; height: 100%; }
.legend { display: flex; gap: 12px; flex-wrap: wrap; font-size: 13px; color: var(--muted); margin-top: 8px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }
.c-pv { background: var(--pv); } .c-akku { background: var(--akku); } .c-netz { background: var(--netz); } .c-unknown { background: var(--unknown); }
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; margin-bottom: 16px; }
label.f { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
input, select, textarea, button { font: inherit; color: inherit; }
input[type=text], input[type=email], input[type=number], input[type=password], select, textarea {
  background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; min-width: 0; width: 100%;
}
button, .btn { background: var(--accent); color: var(--on-accent); border: 0; border-radius: 8px; padding: 8px 14px; cursor: pointer; text-decoration: none; display: inline-block; }
button.secondary { background: var(--accent-2); color: var(--text); }
button.danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
button.link { background: none; color: var(--accent); padding: 0; }
button:disabled { opacity: .5; cursor: default; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .4px; color: var(--muted); font-weight: 600; }
td.num, th.num { text-align: right; white-space: nowrap; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.pill { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; background: var(--accent-2); color: var(--text); white-space: nowrap; }
.pill.ok { color: var(--ok); } .pill.warn { color: var(--warn); } .pill.err { color: var(--danger); }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 6px; background: var(--unknown); }
.dot.ok { background: var(--ok); } .dot.warn { background: var(--warn); } .dot.err { background: var(--danger); }
.msg { padding: 10px 12px; border-radius: 8px; margin: 10px 0; background: var(--accent-2); }
.msg.err { color: var(--danger); }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 16px; border-bottom: 1px solid var(--line); }
.tabs button { background: transparent; color: var(--muted); border-radius: 8px 8px 0 0; border: 1px solid transparent; }
.tabs a { text-decoration: none; color: var(--muted); padding: 8px 14px; border-radius: 8px 8px 0 0; border: 1px solid transparent; }
.tabs a.active { color: var(--text); background: var(--card); border-color: var(--line); border-bottom-color: var(--card); margin-bottom: -1px; }
.tabs button.active { color: var(--text); background: var(--card); border-color: var(--line); border-bottom-color: var(--card); margin-bottom: -1px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; align-items: end; }
.checks { display: flex; flex-wrap: wrap; gap: 6px 14px; }
.checks label { display: flex; gap: 6px; align-items: center; }
pre.raw { background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 10px; overflow: auto; font-size: 12px; max-height: 360px; margin: 0; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; font-size: 14px; margin: 0; }
.kv dt { color: var(--muted); } .kv dd { margin: 0; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.check-list { padding-left: 0; list-style: none; margin: 0; }
.check-list li { margin: 6px 0; display: flex; gap: 8px; }
.chart-box { position: relative; height: 280px; }
.login-box { max-width: 380px; margin: 10vh auto; }
.hidden { display: none !important; }
dialog { border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); color: var(--text); padding: 20px; max-width: min(560px, calc(100vw - 32px)); width: 100%; }
dialog::backdrop { background: rgba(0,0,0,.35); }
dialog .actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
.row-actions { display: flex; gap: 6px; flex-wrap: wrap; }
@media (max-width: 600px) {
  header.top .brand { flex: 1; }
  header.top nav { order: 3; flex-basis: 100%; flex-wrap: nowrap; overflow-x: auto; }
  header.top nav a { white-space: nowrap; }
}
@media (max-width: 600px) { .tile .big { font-size: 24px; } th, td { padding: 6px; } main { padding: 12px 16px; } }

/* Übersicht: Energiefluss und Kennzahlen */
.flow, .grid.kpis { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(118px, 1fr)); }
.flow-node, .kpi { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; background: var(--bg); }
.flow-node .label, .kpi .label { font-size: 13px; color: var(--muted); }
.flow-node .val, .kpi .val { font-size: 22px; font-weight: 650; font-variant-numeric: tabular-nums; margin: 2px 0; }
.flow-node.c-pv-b { border-left: 4px solid var(--pv); }
.flow-node.c-akku-b { border-left: 4px solid var(--akku); }
.flow-node.c-netz-b { border-left: 4px solid var(--netz); }
.period-nav { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.period-nav .label { min-width: 150px; text-align: center; font-weight: 600; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.seg button { border-radius: 0; background: var(--card); color: var(--muted); }
.seg button.active { background: var(--accent); color: var(--on-accent); }

/* Energiefluss-Grafik */
.eflow-wrap { display: grid; gap: 16px; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); align-items: start; }
@media (max-width: 800px) { .eflow-wrap { grid-template-columns: 1fr; } }
.eflow { width: 100%; height: auto; display: block; max-height: 460px; user-select: none; }
.eflow.stale { opacity: .55; }
.eflow .edge-base { stroke: var(--line); stroke-width: 4; stroke-linecap: round; }
.eflow .edge-flow { fill: none; stroke-linecap: round; stroke-dasharray: 1 13; animation: eflow-run 1s linear infinite; }
.eflow .edge-arrow { stroke: none; }
.eflow .edge:not(.active) .edge-flow, .eflow .edge:not(.active) .edge-arrow { display: none; }
@keyframes eflow-run { to { stroke-dashoffset: -28; } }
.eflow .node { cursor: pointer; outline: none; }
.eflow .node-bg { fill: var(--card); }
.eflow .node-ring { fill: none; stroke-width: 3; transition: stroke-width .15s; }
.eflow .node:hover .node-ring, .eflow .node:focus-visible .node-ring { stroke-width: 5; }
.eflow .node.selected .node-ring { stroke-width: 6; }
.eflow .node.selected .node-bg { fill: var(--accent-2); }
.eflow .soc-ring { fill: none; stroke: var(--akku); stroke-width: 5; opacity: .35; stroke-linecap: round; }
.eflow text { text-anchor: middle; fill: var(--text); font-family: inherit; }
.eflow .node-icon { font-size: 24px; dominant-baseline: middle; }
.eflow .node-val { font-size: 17px; font-weight: 700; dominant-baseline: middle; font-variant-numeric: tabular-nums; }
.eflow .node-sub { font-size: 10px; fill: var(--muted); dominant-baseline: middle; }
.eflow .node-title { font-size: 13.5px; fill: var(--muted); font-weight: 600; }
@media (prefers-reduced-motion: reduce) { .eflow .edge-flow { animation: none; stroke-dasharray: none; opacity: .6; } }
.eflow-detail { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; background: var(--bg); min-height: 200px; }
@media (max-width: 600px) {
  .eflow .node-icon { font-size: 28px; }
  .eflow .node-val { font-size: 22px; }
  .eflow .node-sub { font-size: 12.5px; }
  .eflow .node-title { font-size: 17px; }
  #energy-now.card, #now-card.card { padding: 12px 8px; }
}
.qr { width: 220px; max-width: 100%; background: #fff; padding: 8px; border-radius: 8px; margin: 8px 0; }
.qr svg { width: 100%; height: auto; display: block; }
header.top .user a { color: var(--text); text-decoration: none; }