:root {
  --bg: #0e1116;
  --bg-2: #151a22;
  --bg-3: #1c232e;
  --line: #2a3341;
  --fg: #dfe6ef;
  --fg-dim: #8b97a8;
  --accent: #26c281;
  --accent-2: #3b9dff;
  --warn: #f0a136;
  --danger: #e5534b;
  --radius: 7px;
  --panel-w: 288px;
  font-synthesis: none;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; height: 100%;
  background: var(--bg); color: var(--fg);
  font: 13px/1.45 "Segoe UI", "Noto Sans Thai", system-ui, sans-serif;
  overflow: hidden;
}

#app { display: flex; flex-direction: column; height: 100%; }

/* ---------------------------------------------------------------- topbar */
.topbar {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 10px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--line);
  flex: 0 0 auto;
}
.brand { font-weight: 700; letter-spacing: .3px; display: flex; align-items: center; gap: 6px; }
.brand .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); }
.proj-name {
  background: var(--bg-3); border: 1px solid var(--line); color: var(--fg);
  border-radius: var(--radius); padding: 5px 9px; width: 210px;
}
.spacer { flex: 1 1 auto; }
.save-state { color: var(--fg-dim); font-size: 12px; min-width: 86px; text-align: right; }
.save-state.dirty { color: var(--warn); }
.save-state.saved { color: var(--accent); }
.save-state.error { color: var(--danger); }

.tool-group { display: flex; gap: 4px; margin-left: 6px; }
.tool {
  background: var(--bg-3); border: 1px solid var(--line); color: var(--fg-dim);
  padding: 5px 10px; border-radius: var(--radius); cursor: pointer; white-space: nowrap;
}
.tool:hover { color: var(--fg); border-color: #3c4a5d; }
.tool.active { background: var(--accent); border-color: var(--accent); color: #06210f; font-weight: 600; }

button { font: inherit; cursor: pointer; }
button.primary {
  background: var(--accent); color: #06210f; border: 0; font-weight: 600;
  padding: 6px 13px; border-radius: var(--radius);
}
button.primary:hover { filter: brightness(1.1); }
button.ghost {
  background: transparent; color: var(--fg-dim); border: 1px solid var(--line);
  padding: 5px 10px; border-radius: var(--radius);
}
button.ghost:hover { color: var(--fg); }
button.mini {
  background: var(--bg-3); color: var(--fg-dim); border: 1px solid var(--line);
  padding: 3px 8px; border-radius: 5px; font-size: 12px;
}
button.mini:hover { color: var(--fg); }
button.mini.danger:hover { color: #fff; background: var(--danger); border-color: var(--danger); }
button.mini.active-edit { background: var(--accent); color: #06210f; border-color: var(--accent); font-weight: 600; }
button.wide { width: 100%; }
button:disabled { opacity: .45; cursor: not-allowed; }

/* ----------------------------------------------------------------- layout */
main { flex: 1 1 auto; display: flex; min-height: 0; }

.panel {
  width: var(--panel-w); flex: 0 0 var(--panel-w);
  background: var(--bg-2); overflow-y: auto; overflow-x: hidden;
  display: flex; flex-direction: column; gap: 8px; padding: 8px;
}
.panel.left { border-right: 1px solid var(--line); }
.panel.right { border-left: 1px solid var(--line); }

.card {
  background: var(--bg-3); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 9px;
}
.card.grow { flex: 1 1 auto; min-height: 160px; display: flex; flex-direction: column; }
.card h3 {
  margin: 0 0 8px; font-size: 12px; text-transform: uppercase;
  letter-spacing: .6px; color: var(--fg-dim);
}
.badge {
  background: var(--bg); border: 1px solid var(--line); border-radius: 10px;
  padding: 0 6px; font-size: 11px; color: var(--fg);
}

.row { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
.row.end { justify-content: flex-end; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 5px 7px; margin-top: 6px; }
.grid2 > label, .row > label { display: flex; flex-direction: column; font-size: 11px; color: var(--fg-dim); gap: 2px; }
label.chk { flex-direction: row !important; align-items: center; gap: 5px; color: var(--fg); font-size: 12px; }

input[type=text], input[type=number], input[type=search], select {
  background: var(--bg); border: 1px solid var(--line); color: var(--fg);
  border-radius: 5px; padding: 4px 6px; width: 100%; min-width: 0;
}
input[type=range] { width: 100%; accent-color: var(--accent); }
input[type=color] { background: none; border: 1px solid var(--line); border-radius: 4px; width: 26px; height: 21px; padding: 1px; }
input[type=checkbox] { accent-color: var(--accent); }
select { cursor: pointer; }

.hint { color: var(--fg-dim); font-size: 11px; margin: 7px 0 0; line-height: 1.5; }
.kv { color: var(--fg-dim); font-size: 11px; white-space: nowrap; }
kbd {
  background: var(--bg); border: 1px solid var(--line); border-bottom-width: 2px;
  border-radius: 4px; padding: 0 5px; font: 11px/1.6 ui-monospace, monospace;
}

.layer-block { border-top: 1px dashed var(--line); padding-top: 8px; margin-top: 8px; }
.layer-block:first-of-type { border-top: 0; padding-top: 0; margin-top: 0; }
.layer-head { display: flex; align-items: center; justify-content: space-between; gap: 6px; }
.drop {
  margin-top: 6px; border: 1px dashed var(--line); border-radius: 6px;
  padding: 9px; text-align: center; color: var(--fg-dim); font-size: 11px;
}
.drop.hot { border-color: var(--accent); color: var(--accent); background: #26c2811a; }
.drop.has-image { border-style: solid; color: var(--fg); }

.pairs { margin: 6px 0 0; padding-left: 18px; font-size: 11px; color: var(--fg-dim); max-height: 108px; overflow: auto; }
.pairs li { margin: 1px 0; }
.pairs li.pending { color: var(--warn); }
.report { font-size: 11px; color: var(--fg-dim); margin-top: 6px; white-space: pre-line; }
.report.good { color: var(--accent); }
.report.bad { color: var(--danger); }

/* ------------------------------------------------------------------ stage */
.stage { flex: 1 1 auto; display: flex; flex-direction: column; min-width: 0; }
.tabs {
  display: flex; align-items: center; gap: 6px; padding: 5px 8px;
  background: var(--bg-2); border-bottom: 1px solid var(--line);
}
.tab {
  background: transparent; border: 1px solid transparent; color: var(--fg-dim);
  padding: 4px 11px; border-radius: var(--radius);
}
.tab.active { background: var(--bg-3); border-color: var(--line); color: var(--fg); }
.view-actions { display: flex; align-items: center; gap: 8px; }
.view-actions label { display: flex; align-items: center; gap: 4px; font-size: 11px; color: var(--fg-dim); }
.view-actions select, .view-actions input[type=range] { width: auto; }

.canvas-wrap { position: relative; flex: 1 1 auto; min-height: 0; background: #0a0d12; }
.canvas { position: absolute; inset: 0; width: 100%; height: 100%; outline: none; touch-action: none; }
.canvas.tool-wire { cursor: crosshair; }
.canvas.tool-align, .canvas.tool-calib, .canvas.tool-measure { cursor: cell; }
.canvas.panning { cursor: grabbing; }
.hidden { display: none !important; }

.hud {
  position: absolute; left: 10px; bottom: 10px; pointer-events: none;
  background: #0a0d12cc; border: 1px solid var(--line); border-radius: 6px;
  padding: 5px 9px; font-size: 11px; color: var(--fg-dim); max-width: 60%;
}
.hud:empty { display: none; }

.statusbar {
  flex: 0 0 auto; display: flex; gap: 14px; align-items: center;
  padding: 4px 10px; background: var(--bg-2); border-top: 1px solid var(--line);
  font-size: 11px; color: var(--fg-dim);
}

/* --------------------------------------------------------------- SVG bits */
.pcb-image { image-rendering: auto; }
.comp-body { fill: #1f2a38cc; stroke: #7dd3fc; stroke-width: 1; vector-effect: non-scaling-stroke; }
.comp-body.bottom { stroke: #f0abfc; stroke-dasharray: 4 3; }
.comp.selected .comp-body { stroke: var(--accent); stroke-width: 2; fill: #26c28133; }
.comp-ref { fill: #cbd5e1; font: 600 9px "Segoe UI", sans-serif; pointer-events: none; }
.pin { fill: #0b0f14; stroke: #fbbf24; stroke-width: 1; vector-effect: non-scaling-stroke; cursor: pointer; }
.pin.p1 { stroke: #ef4444; }
.pin.connected { fill: #fbbf24; }
.pin:hover { stroke: #fff; stroke-width: 2.5; }
.pin.hot { fill: var(--accent); stroke: #fff; }
.pin-num { fill: #94a3b8; font: 7px ui-monospace, monospace; pointer-events: none; text-anchor: middle; }
.trace { fill: none; stroke-width: 2.4; vector-effect: non-scaling-stroke; stroke-linecap: round; stroke-linejoin: round; cursor: pointer; }
.trace.bottom { stroke-dasharray: 7 4; }
.trace:hover { stroke-width: 5; }
.trace.hl { stroke-width: 5; filter: drop-shadow(0 0 4px currentColor); }
.rubber { fill: none; stroke: var(--accent); stroke-width: 2; stroke-dasharray: 5 4; vector-effect: non-scaling-stroke; }
.marker-a { fill: none; stroke: #3b9dff; stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.marker-b { fill: none; stroke: #f472b6; stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.meas { stroke: var(--warn); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.meas-text { fill: var(--warn); font: 11px ui-monospace, monospace; }
.grid-line { stroke: #ffffff10; stroke-width: 1; vector-effect: non-scaling-stroke; }

/* schematic */
.sch-bg { fill: #f7f7f2; }
.sch-grid { stroke: #00000010; stroke-width: 1; }
.sym { stroke: #14202e; fill: none; stroke-width: 2; stroke-linejoin: round; }
.sym-fill { fill: #14202e; stroke: none; }
.sym-box { fill: #fffdf3; stroke: #14202e; stroke-width: 2; }
.sym-text { fill: #14202e; font: 11px "Segoe UI", sans-serif; }
.sym-ref { fill: #0b6b3a; font: 700 12px "Segoe UI", sans-serif; }
.sym-val { fill: #7a3b00; font: 11px "Segoe UI", sans-serif; }
.sym-pinnum { fill: #64748b; font: 9px ui-monospace, monospace; }
.sch-wire { stroke: #0b6b3a; stroke-width: 1.8; fill: none; }
.sch-junction { fill: #0b6b3a; }
.sch-label { fill: #0b3a6b; font: 600 10px ui-monospace, monospace; }
.sch-node { cursor: move; }
.sch-node.selected .sym-box { stroke: #26a269; }
.sch-node.selected .sym { stroke: #26a269; }

/* ------------------------------------------------------------ right panel */
#fpPreviewWrap { margin-top: 8px; background: #0a0d12; border: 1px solid var(--line); border-radius: 6px; }
#fpPreview { width: 100%; height: 120px; display: block; }
.props .prow { display: grid; grid-template-columns: 62px 1fr; gap: 5px; align-items: center; margin-bottom: 5px; }
.props .prow > span { color: var(--fg-dim); font-size: 11px; }
.pin-table { width: 100%; border-collapse: collapse; margin-top: 6px; font-size: 11px; display: block; max-height: 190px; overflow: auto; }
.pin-table td { padding: 1px 3px; }
.pin-table td:first-child { color: var(--fg-dim); width: 26px; }
.pin-table input { padding: 2px 4px; }
.pin-table .netcell { color: var(--accent); font: 11px ui-monospace, monospace; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 84px; }

.netlist { list-style: none; margin: 6px 0 0; padding: 0; overflow-y: auto; flex: 1 1 auto; }
.netlist li {
  display: flex; align-items: center; gap: 5px; padding: 3px 4px;
  border-radius: 5px; cursor: pointer;
}
.netlist li:hover { background: #ffffff0d; }
.netlist li.sel { background: #26c28126; }
.netlist .swatch { width: 10px; height: 10px; border-radius: 2px; flex: 0 0 auto; }
.netlist .nm { flex: 1 1 auto; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font: 12px ui-monospace, monospace; }
.netlist .ct { color: var(--fg-dim); font-size: 11px; }

.projlist { list-style: none; margin: 10px 0 0; padding: 0; max-height: 320px; overflow: auto; }
.projlist li { display: flex; align-items: center; gap: 8px; padding: 6px; border-radius: 6px; border: 1px solid var(--line); margin-bottom: 5px; }
.projlist li:hover { background: #ffffff0d; }
.projlist .pn { flex: 1 1 auto; }
.projlist .pd { color: var(--fg-dim); font-size: 11px; }

dialog {
  background: var(--bg-2); color: var(--fg); border: 1px solid var(--line);
  border-radius: 10px; padding: 16px; min-width: 420px; box-shadow: 0 20px 60px #000a;
}
dialog::backdrop { background: #000a; backdrop-filter: blur(2px); }
dialog h3 { margin: 0 0 10px; }
.keys { border-collapse: collapse; font-size: 12px; }
.keys td { padding: 3px 10px 3px 0; vertical-align: top; }
.keys td:first-child { white-space: nowrap; }

::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-thumb { background: #33414f; border-radius: 5px; }
::-webkit-scrollbar-track { background: transparent; }