:root {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --line: #dfe2e7;
  --text: #1d2330;
  --muted: #6b7280;
  --hover: #f0f3f8;
  --sel: #e3ecff;
  --accent: #2f6fed;
  --accent-text: #ffffff;
  --wire: #2f6fed;
  --wire-func: #8b46d9;
  --wire-loop: #e08a00;
  --const: #0f7b5f;
  --err: #d93a3a;
  --err-bg: #fdeeee;
  --ok: #18884a;
  --code-bg: #f7f8fa;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}
@media all {
  :root[data-theme="dark"] {
    --bg: #14161b;
    --panel: #1c1f26;
    --line: #2d313b;
    --text: #e6e8ec;
    --muted: #9aa1ad;
    --hover: #252a33;
    --sel: #23324f;
    --accent: #5b8cff;
    --wire: #5b8cff;
    --wire-func: #b07cf0;
    --wire-loop: #f0a530;
    --const: #3ccf9e;
    --err: #ff6b6b;
    --err-bg: #3a2023;
    --ok: #3ecf7a;
    --code-bg: #171a20;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 13px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
button, input, select, textarea { font: inherit; color: inherit; }
button {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 4px 10px;
  cursor: pointer;
  white-space: nowrap;
}
button:hover { background: var(--hover); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.primary:hover { filter: brightness(1.08); }
button.danger { color: var(--err); }
button:disabled { opacity: .45; cursor: default; }
.icon-btn { padding: 4px 7px; }
input, select, textarea {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 4px 7px;
  min-width: 0;
}
input:focus, select:focus, textarea:focus, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}
textarea { font-family: var(--mono); font-size: 12px; resize: vertical; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.spacer { flex: 1; }
.muted { color: var(--muted); }
[hidden] { display: none !important; }

/* ---------- Kopfzeile */
.top {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.brand { font-weight: 650; font-size: 15px; }
.logo { color: var(--accent); }
.tabs { display: flex; gap: 2px; }
.tabs button { border: none; background: none; padding: 6px 12px; border-radius: 6px; color: var(--muted); }
.tabs button.active { background: var(--sel); color: var(--text); font-weight: 600; }
.mapbar { display: flex; align-items: center; gap: 6px; margin-left: auto; flex-wrap: wrap; }
.mapbar select { min-width: 200px; }
.state { color: var(--muted); font-size: 12px; }
.state.dirty { color: var(--wire-loop); }
.state.err { color: var(--err); }
.state.ok { color: var(--ok); }

main { flex: 1; min-height: 0; }
.tab { display: none; height: 100%; }
.tab.active { display: flex; flex-direction: column; }

/* ---------- Panels */
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
}
.panel-head {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.panel-head h2 { font-size: 13px; margin: 0; font-weight: 650; }
.badge {
  font-size: 11px;
  padding: 1px 7px;
  border-radius: 10px;
  background: var(--sel);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .03em;
}
.settings {
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  background: var(--code-bg);
}
.settings label, .form label { display: flex; flex-direction: column; gap: 2px; font-size: 11px; color: var(--muted); }
.settings label.check, .form label.check { flex-direction: row; align-items: center; gap: 6px; font-size: 12px; color: var(--text); }
.settings input[type=text] { width: 120px; }
.settings textarea { width: 100%; min-height: 120px; }

/* ---------- Mapping-Fläche */
.board {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 110px minmax(0, 1.25fr);
  gap: 0;
  padding: 10px 10px 6px;
  flex: 1.5;
  min-height: 0;
}
.tree { overflow: auto; flex: 1; padding: 4px 0 30px; position: relative; }
.empty { padding: 18px; color: var(--muted); line-height: 1.6; }
.empty b { color: var(--text); }
#wires { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
#wires path { fill: none; stroke-width: 1.6; }
#wires path.hit { stroke: transparent; stroke-width: 12; pointer-events: stroke; cursor: pointer; }
#wires path.wire { stroke: var(--wire); }
#wires path.wire.func { stroke: var(--wire-func); stroke-dasharray: 5 3; }
#wires path.wire.loop { stroke: var(--wire-loop); stroke-width: 2.4; }
#wires path.wire.sel { stroke-width: 3.2; }
#wires path.wire.off { opacity: .35; }
#wires path.temp { stroke: var(--accent); stroke-dasharray: 4 3; stroke-width: 2; }

.row {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  height: 25px;
  padding-right: 22px;
  white-space: nowrap;
  cursor: default;
  user-select: none;
}
.row:hover { background: var(--hover); }
.row.sel { background: var(--sel); }
.row.err { background: var(--err-bg); }
.row .name { overflow: hidden; text-overflow: ellipsis; }
.row.group .name, .row.node .name { font-weight: 600; }
.row .icon { width: 14px; text-align: center; color: var(--muted); flex: none; font-size: 12px; }
.row.node .icon.loop { color: var(--wire-loop); font-weight: 700; }
.twisty { width: 12px; flex: none; color: var(--muted); cursor: pointer; text-align: center; }
.sample { color: var(--muted); font-family: var(--mono); font-size: 11px; overflow: hidden; text-overflow: ellipsis; margin-left: 6px; }
.dot {
  position: absolute;
  top: 50%;
  width: 11px;
  height: 11px;
  margin-top: -5.5px;
  border-radius: 50%;
  border: 2px solid var(--muted);
  background: var(--panel);
  flex: none;
}
.src .dot { right: 5px; cursor: crosshair; }
.src .dot:hover, .src.dragging .dot { border-color: var(--accent); background: var(--accent); }
.tgt .dot { left: 4px; }
.tgt .dot.on { border-color: var(--wire); background: var(--wire); }
.tgt .dot.loop { border-color: var(--wire-loop); background: var(--wire-loop); }
.tgt { padding-left: 22px; padding-right: 8px; cursor: pointer; }
.tgt.drop { outline: 2px dashed var(--accent); outline-offset: -2px; background: var(--sel); }
.tgt .val {
  margin-left: auto;
  padding-left: 12px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--wire);
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 60%;
}
.tgt .val.const { color: var(--const); }
.tgt .val.func { color: var(--wire-func); }
.tgt .val.def { color: var(--muted); font-style: italic; }
.row.node .name { flex: none; }
.loopinfo { color: var(--wire-loop); font-size: 11px; font-family: var(--mono); overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.cond { color: var(--wire-func); font-size: 11px; }
.rootrow { color: var(--muted); padding-left: 8px; cursor: default; }

/* ---------- unterer Bereich */
.bottom {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 10px;
  padding: 4px 10px 10px;
  flex: 1;
  min-height: 0;
}
.props-body { overflow: auto; padding: 10px 12px; }
.form { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px 12px; align-items: end; }
.form .wide { grid-column: 1 / -1; }
.form input[type=text], .form input[type=number], .form select { width: 100%; }
.form .formula { font-family: var(--mono); }
.formula-row { display: flex; gap: 6px; }
.formula-row input { flex: 1; min-width: 200px; }
.formula-row select { flex: 0 0 170px; width: 170px; }
.actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.seg button { border: none; border-radius: 0; padding: 4px 12px; }
.seg button.on { background: var(--accent); color: var(--accent-text); }
.hint { color: var(--muted); font-size: 12px; line-height: 1.55; }
.hint code, .help code { font-family: var(--mono); background: var(--code-bg); padding: 0 4px; border-radius: 3px; }
.ferr { color: var(--err); font-size: 12px; margin-top: 8px; }

pre.code {
  margin: 0;
  padding: 10px 12px;
  overflow: auto;
  flex: 1;
  font: 12px/1.5 var(--mono);
  background: var(--code-bg);
  border-radius: 0 0 8px 8px;
  white-space: pre;
}
#errors:empty { display: none; }
#errors { padding: 8px 12px; border-bottom: 1px solid var(--line); background: var(--err-bg); color: var(--err); font-size: 12px; max-height: 35%; overflow: auto; }
#errors div { padding: 1px 0; cursor: pointer; }
#errors div:hover { text-decoration: underline; }

/* ---------- Dialog */
dialog {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  color: var(--text);
  padding: 0;
  width: min(720px, calc(100vw - 32px));
  max-height: calc(100vh - 60px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, .25);
}
dialog::backdrop { background: rgba(10, 14, 22, .45); }
dialog form { display: flex; flex-direction: column; max-height: calc(100vh - 60px); }
dialog header { padding: 12px 16px; border-bottom: 1px solid var(--line); font-weight: 650; font-size: 14px; }
dialog .body { padding: 14px 16px; overflow: auto; display: flex; flex-direction: column; gap: 10px; }
dialog footer { padding: 10px 16px; border-top: 1px solid var(--line); display: flex; justify-content: flex-end; gap: 8px; }
dialog textarea { width: 100%; min-height: 260px; }
dialog label { display: flex; flex-direction: column; gap: 3px; font-size: 12px; color: var(--muted); }
dialog pre.code { max-height: 60vh; border-radius: 6px; }
.tables table { border-collapse: collapse; width: 100%; }
.tables td { padding: 2px 4px 2px 0; }
.tables td input { width: 100%; }
.tables .tbl { border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; }
.tables .tbl-head { display: flex; gap: 8px; align-items: center; margin-bottom: 6px; }

/* ---------- Monitor */
#monitor { padding: 14px; overflow: auto; height: 100%; display: flex; flex-direction: column; gap: 14px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 12px; }
.card { padding: 12px 14px; gap: 6px; }
.card h3 { margin: 0; font-size: 14px; display: flex; gap: 8px; align-items: center; }
.card .kv { display: grid; grid-template-columns: 90px 1fr; gap: 2px 8px; font-size: 12px; }
.card .kv span:nth-child(odd) { color: var(--muted); }
.card .kv span:nth-child(even) { font-family: var(--mono); font-size: 11.5px; overflow-wrap: anywhere; }
.pill { font-size: 11px; padding: 1px 8px; border-radius: 10px; background: var(--sel); color: var(--muted); }
.pill.ok { background: rgba(24, 136, 74, .14); color: var(--ok); }
.pill.err { background: var(--err-bg); color: var(--err); }
.errfile { border-top: 1px solid var(--line); padding-top: 6px; margin-top: 4px; font-size: 12px; display: flex; flex-direction: column; gap: 3px; }
.errfile .msg { color: var(--err); font-family: var(--mono); font-size: 11px; white-space: pre-wrap; }
.errfile .line { display: flex; align-items: center; gap: 8px; }
.errfile .line span { font-family: var(--mono); overflow-wrap: anywhere; flex: 1; }
table.log { width: 100%; border-collapse: collapse; font-size: 12px; }
table.log th, table.log td { text-align: left; padding: 5px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.log th { color: var(--muted); font-weight: 600; position: sticky; top: 0; background: var(--panel); }
table.log td.mono { font-family: var(--mono); font-size: 11.5px; }
table.log tr.bad td { color: var(--err); }
.logwrap { overflow: auto; max-height: 55vh; }
a.dl { color: var(--wire); text-decoration: none; }
a.dl:hover { text-decoration: underline; }
a.dl::before { content: "⇩ "; opacity: .7; }

/* ---------- Meldungen */
#toasts { position: fixed; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 50; }
.toast {
  background: var(--text);
  color: var(--bg);
  padding: 8px 14px;
  border-radius: 8px;
  box-shadow: var(--shadow);
  max-width: 420px;
  font-size: 13px;
  animation: pop .15s ease-out;
}
.toast.err { background: var(--err); color: #fff; }
@keyframes pop { from { transform: translateY(6px); opacity: 0; } }

@media (max-width: 900px) {
  body { overflow: auto; }
  .board { grid-template-columns: minmax(0, 1fr) 40px minmax(0, 1fr); min-height: 70vh; }
  .bottom { grid-template-columns: 1fr; }
  .bottom .panel { min-height: 260px; }
}