/* Gleisknoten-Planer – Skizzenblock-Look (dunkel, helle Variante per Systemeinstellung) */
:root {
  --bg: #1f2124;
  --dot: #3c3f44;
  --panel: #2a2d31;
  --panel-2: #33363b;
  --line: #45494f;
  --ink: #ecebe6;
  --muted: #a3a7ad;
  --track: #c9c7c0;
  --accent: #f2c14e;
  --accent-ink: #1f2124;
  --sig-e: #7bd88f;
  --sig-a: #7cc4f5;
  --sig-z: #f2c14e;
  --warn: #ff7a59;
  --ok: #7bd88f;
  --err: #ff5d5d;
  --radius: 12px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f3ee;
    --dot: #d2cec4;
    --panel: #ffffff;
    --panel-2: #f1efe9;
    --line: #dcd8ce;
    --ink: #24262a;
    --muted: #686c73;
    --track: #6f6c65;
    --accent: #c98a00;
    --accent-ink: #ffffff;
    --sig-e: #2e9d4a;
    --sig-a: #1f7fc4;
    --sig-z: #c98a00;
    --warn: #d9480f;
    --ok: #2e9d4a;
    --err: #c92a2a;
    color-scheme: light;
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.45;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
button { font: inherit; color: inherit; }

/* ── Kopfzeile ── */
.bar {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  position: relative; z-index: 5;
}
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; min-width: 0; }
.logo { width: 30px; height: 30px; color: var(--accent); flex: none; }
.brand h1 { font-size: 17px; font-weight: 750; letter-spacing: -0.01em; }
.brand p { font-size: 12px; color: var(--muted); }
.tools { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.modes { display: inline-flex; background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; padding: 3px; margin-left: 8px; }
.modes a { color: var(--muted); text-decoration: none; padding: 4px 12px; border-radius: 7px; font-weight: 650; font-size: 13px; }
.modes a:hover { color: var(--ink); }
.modes a[aria-current="page"] { background: var(--accent); color: var(--accent-ink); }

/* Bahnhofsplaner: Listen in der Seitenleiste */
.prows, .plines { list-style: none; display: flex; flex-direction: column; gap: 4px; margin: 6px 0; }
.prow, .pline { display: flex; align-items: center; gap: 6px; padding: 4px 6px; border-radius: 8px; flex-wrap: wrap; }
.prow:hover, .prow.hl, .pline:hover, .pline.hl { background: color-mix(in srgb, var(--accent) 12%, transparent); }
.prow .no, .pline .no { min-width: 24px; font-weight: 750; font-variant-numeric: tabular-nums; }
.prow select { padding: 3px 4px; font-size: 12.5px; max-width: 112px; }
.typebtn { display: inline-flex; align-items: center; gap: 6px; padding: 3px 9px; font-size: 12.5px; min-width: 92px; }
.picks { flex-basis: 100%; display: flex; gap: 12px; padding-left: 30px; flex-wrap: wrap; }
.pick { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.pick select { padding: 2px 4px; font-size: 12px; }
.rowbtns { display: inline-flex; gap: 2px; margin-left: auto; }
.rowbtns .btn { padding: 2px 7px; font-size: 12px; min-width: 0; }
.dirtag { font-size: 11.5px; color: var(--muted); min-width: 52px; }
.flash { animation: flash 1s ease-out; }
@keyframes flash { 0% { background: color-mix(in srgb, var(--accent) 40%, transparent); } 100% { background: transparent; } }

.btn {
  border: 1px solid var(--line);
  background: var(--panel-2);
  border-radius: 9px;
  padding: 6px 11px;
  cursor: pointer;
  white-space: nowrap;
  transition: background .12s, border-color .12s;
}
.btn:hover { border-color: var(--muted); }
.btn:focus-visible, .menu-list button:focus-visible, .link:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 650; }
.btn.icon { min-width: 36px; font-size: 16px; line-height: 1; padding: 6px 8px; }
.btn:disabled { opacity: .4; cursor: default; }
.btn.danger { color: var(--err); border-color: color-mix(in srgb, var(--err) 45%, var(--line)); background: transparent; }
.seg { display: inline-flex; }
.seg .btn { border-radius: 0; margin-left: -1px; }
.seg .btn:first-child { border-radius: 9px 0 0 9px; margin-left: 0; }
.seg .btn:last-child { border-radius: 0 9px 9px 0; }
.seg .btn[aria-pressed="true"] { background: color-mix(in srgb, var(--accent) 22%, var(--panel-2)); border-color: color-mix(in srgb, var(--accent) 60%, var(--line)); position: relative; }
.seg.small .btn { padding: 4px 9px; font-size: 12.5px; }

.menu { position: relative; }
.menu-list {
  position: absolute; right: 0; top: calc(100% + 6px);
  min-width: 250px;
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(0,0,0,.35);
  padding: 6px; display: flex; flex-direction: column;
}
.menu-list[hidden] { display: none; }
.menu-list button { text-align: left; background: none; border: 0; padding: 8px 10px; border-radius: 8px; cursor: pointer; }
.menu-list button:hover { background: var(--panel-2); }
.menu-list hr { border: 0; border-top: 1px solid var(--line); margin: 5px 4px; }

/* ── Hauptbereich ── */
.layout { flex: 1; min-height: 0; display: grid; grid-template-columns: minmax(0, 1fr) 390px; }
.stage { position: relative; min-width: 0; min-height: 0; overflow: hidden; }
#canvas { width: 100%; height: 100%; display: block; background: var(--bg); touch-action: none; user-select: none; -webkit-user-select: none; cursor: grab; }
#canvas.panning { cursor: grabbing; }
#canvas .node, #canvas .handle, #canvas .pill, #canvas .strand, #canvas .hit, #canvas .sig { cursor: pointer; }
#canvas .node { cursor: move; }
#canvas .strand:hover { stroke-width: 4.6; }
#canvas .pulse { animation: pulse 1.1s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .35; } }

.stats {
  position: absolute; left: 12px; top: 12px;
  display: flex; flex-wrap: wrap; gap: 6px; max-width: calc(100% - 24px);
  pointer-events: none;
}
.chip {
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 3px 10px; font-size: 12px; color: var(--muted);
  backdrop-filter: blur(6px);
}
.chip b { color: var(--ink); font-weight: 700; }
.chip.warn b { color: var(--warn); }
.hint {
  position: absolute; left: 12px; right: 12px; bottom: 10px;
  font-size: 12px; color: var(--muted);
  pointer-events: none; text-shadow: 0 0 4px var(--bg), 0 0 8px var(--bg);
}

/* ── Seitenleiste ── */
.side {
  border-left: 1px solid var(--line);
  background: var(--panel);
  overflow-y: auto;
  padding: 14px;
  display: flex; flex-direction: column; gap: 14px;
}
.panel { background: var(--panel-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; }
.panel h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-bottom: 8px; font-weight: 700; }
.panel h3 { font-size: 13px; margin: 10px 0 6px; }
.panel p { color: var(--muted); }
.panel .lead { color: var(--ink); font-weight: 650; font-size: 15px; margin-bottom: 8px; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin: 8px 0; flex-wrap: wrap; }
.row > span:first-child { color: var(--muted); }
input[type="text"], select {
  font: inherit; color: var(--ink);
  background: var(--panel); border: 1px solid var(--line); border-radius: 8px;
  padding: 6px 9px; min-width: 0;
}
input[type="text"] { width: 100%; }
input[type="text"]:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.stepper { display: inline-flex; align-items: center; gap: 8px; }
.stepper output { min-width: 1.6em; text-align: center; font-weight: 700; font-size: 16px; }
.checks { display: flex; flex-direction: column; gap: 5px; }
.checks label { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.dot { width: 11px; height: 11px; border-radius: 50%; flex: none; display: inline-block; }
.swatches { display: flex; flex-wrap: wrap; gap: 6px; }
.swatch { width: 26px; height: 26px; border-radius: 50%; border: 2px solid transparent; cursor: pointer; }
.swatch[aria-pressed="true"] { border-color: var(--ink); box-shadow: 0 0 0 2px var(--panel-2) inset; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.link { background: none; border: 0; color: var(--accent); cursor: pointer; padding: 4px 0; font-size: 12.5px; text-decoration: underline; }
.fine { font-size: 12px; color: var(--muted); margin-top: 8px; }

.legend summary { cursor: pointer; color: var(--muted); font-size: 13px; margin-top: 8px; }
.legend ul { list-style: none; margin-top: 8px; display: flex; flex-direction: column; gap: 6px; }
.legend li { display: flex; align-items: center; gap: 10px; font-size: 12.5px; }
.legend li svg { width: 44px; height: 14px; flex: none; }

/* Bauanleitung */
.guide details { border-top: 1px solid var(--line); padding: 8px 0 2px; }
.guide details:first-of-type { border-top: 0; }
.guide summary { cursor: pointer; font-weight: 650; list-style: none; display: flex; align-items: center; gap: 8px; }
.guide summary::-webkit-details-marker { display: none; }
.guide summary::before { content: "▸"; color: var(--muted); transition: transform .15s; display: inline-block; }
.guide details[open] summary::before { transform: rotate(90deg); }
.guide summary .count { color: var(--muted); font-weight: 500; margin-left: auto; font-size: 12px; }
.items { list-style: none; margin: 6px 0 4px; display: flex; flex-direction: column; gap: 2px; }
.item { display: grid; grid-template-columns: 36px 1fr; gap: 8px; padding: 5px 6px; border-radius: 8px; font-size: 13px; }
.item:hover, .item.hl { background: color-mix(in srgb, var(--accent) 14%, transparent); }
.item .tag { font-weight: 750; font-variant-numeric: tabular-nums; }
.item .sub { color: var(--muted); font-size: 12px; }
.item .cols { display: inline-flex; gap: 3px; vertical-align: middle; margin-right: 4px; }
.item.clickable { cursor: pointer; }
.nodecard { margin: 6px 0 10px; }
.nodecard .title { font-weight: 650; }
.nodecard .title span { color: var(--muted); font-weight: 500; font-size: 12px; }
.lanes { list-style: none; margin-top: 4px; }
.lanes li { display: grid; grid-template-columns: 30px 18px 1fr; gap: 6px; align-items: center; padding: 3px 6px; border-radius: 7px; font-size: 13px; }
.lanes li:hover, .lanes li.hl { background: color-mix(in srgb, var(--accent) 14%, transparent); }
.lanes .no { font-weight: 700; color: var(--muted); }
.lanes .dir { text-align: center; color: var(--muted); }
.hsb { display: inline-block; font-size: 10px; font-weight: 750; letter-spacing: .03em; line-height: 1.35; padding: 0 5px; margin-left: 6px;
  border: 1px solid currentColor; border-radius: 6px; color: var(--accent); vertical-align: 1px; white-space: nowrap; }
.arrow { display: inline-block; width: 14px; text-align: center; }
.sigtag { display: inline-flex; align-items: center; gap: 4px; }
.sigdot { width: 12px; height: 12px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 8px; color: var(--bg); }
.pillbtn { font-size: 11.5px; border: 1px solid var(--line); background: var(--panel); border-radius: 999px; padding: 1px 8px; cursor: pointer; margin-top: 3px; }
.pillbtn.flat { border-color: var(--warn); color: var(--warn); }

/* Bauablauf */
.steps { list-style: none; margin: 6px 0 4px; display: flex; flex-direction: column; gap: 8px; }
.step { padding: 6px; border-radius: 9px; }
.step[data-ref]:hover, .step.hl { background: color-mix(in srgb, var(--accent) 10%, transparent); }
.steptitle { font-weight: 650; display: flex; align-items: center; gap: 8px; }
.stepno {
  width: 20px; height: 20px; border-radius: 50%; flex: none;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent); color: var(--accent-ink); font-size: 12px; font-weight: 750;
}
.step > .sub { margin: 3px 0 0 28px; }
.step .items { margin-left: 20px; }
.step .note { margin: 6px 0 0 28px; }

/* Hinweis auf neue Version */
.updatebar {
  position: fixed; top: 10px; left: 50%; transform: translateX(-50%); z-index: 30;
  display: flex; align-items: center; gap: 12px;
  background: var(--panel); border: 1px solid var(--accent); border-radius: 999px;
  padding: 6px 6px 6px 16px; box-shadow: 0 10px 30px rgba(0,0,0,.35); font-weight: 600;
}

/* Hinweise */
.notes { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.note { padding: 8px 10px 8px 12px; border-radius: 9px; background: var(--panel); border-left: 3px solid var(--muted); font-size: 13px; }
.note.warn { border-left-color: var(--warn); }
.note.error { border-left-color: var(--err); }
.note.ok { border-left-color: var(--ok); }
.note[data-ref]:hover, .note.hl { background: color-mix(in srgb, var(--accent) 14%, var(--panel)); }
.empty { color: var(--muted); font-size: 13px; }

.toast {
  position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%);
  background: var(--ink); color: var(--bg);
  padding: 8px 14px; border-radius: 999px; font-size: 13px; font-weight: 600;
  box-shadow: 0 8px 24px rgba(0,0,0,.3); z-index: 20;
}

/* ── Schmale Fenster ── */
@media (max-width: 900px) {
  body { overflow: auto; }
  .layout { grid-template-columns: 1fr; }
  .stage { height: 64vh; min-height: 360px; }
  .side { border-left: 0; border-top: 1px solid var(--line); overflow: visible; }
  .brand p { display: none; }
  .hint { display: none; }
}
@media (max-width: 560px) {
  .bar { padding: 8px 12px; gap: 8px; flex-wrap: wrap; }
  .brand { width: 100%; }
  .brand h1 { font-size: 16px; }
  .logo { width: 24px; height: 24px; }
  /* Werkzeuge in einer Zeile, bei Bedarf seitlich wischen */
  .tools { gap: 6px; flex-wrap: nowrap; overflow-x: auto; width: 100%; padding-bottom: 2px; scrollbar-width: none; }
  .tools::-webkit-scrollbar { display: none; }
  .tools .btn { padding: 5px 8px; font-size: 12.5px; }
  .menu { position: static; }
  .menu-list { right: 12px; top: calc(100% - 4px); }
  .side { padding: 12px 16px; }
}