/* app/css/app.css — VoltLab minimal theme, dark + light */

/* ---------- theme tokens ---------- */
:root, :root[data-theme="dark"] {
  --bg: #0d1117;
  --panel: #141b24;
  --panel2: #182130;
  --line: #232e3d;
  --text: #c9d4e3;
  --dim: #7d8b9e;
  --accent: #ffb454;
  --accent2: #4fc3f7;
  --hot: #ff7a45;
  --ok: #38c172;
  --bad: #e3342f;
  --bad-bg: #3a2527;
  --bad-text: #ff9d8a;
  --wire-off: #55606e;
  --wire-mix: #e8e2d6;
  --grid-dot: #1d2530;

  --sym-body: #1c2836;
  --sym-idle: #5f7086;
  --sym-border: #3d5271;
  --sym-rotor: #41546e;
  --sym-dim: #7d8b9e;
  --sym-label: #9fb0c5;

  --ph-L1: #c98a3d;
  --ph-L2: #8f8f98;
  --ph-L3: #b06a72;
  --ph-N: #4f83b8;

  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #f4f6f9;
  --panel: #ffffff;
  --panel2: #eef1f6;
  --line: #d7dde6;
  --text: #1e293b;
  --dim: #64748b;
  --accent: #b45309;
  --accent2: #0284c7;
  --hot: #ea580c;
  --ok: #059669;
  --bad: #dc2626;
  --bad-bg: #fee2e2;
  --bad-text: #b91c1c;
  --wire-off: #b0bac7;
  --wire-mix: #6b7280;
  --grid-dot: #dde3ec;

  --sym-body: #ffffff;
  --sym-idle: #94a3b8;
  --sym-border: #cbd5e1;
  --sym-rotor: #a8b3c2;
  --sym-dim: #64748b;
  --sym-label: #475569;

  --ph-L1: #a3671f;
  --ph-L2: #6b7280;
  --ph-L3: #96525c;
  --ph-N: #2563eb;

  color-scheme: light;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 13px/1.45 "Segoe UI", system-ui, sans-serif;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ---------- toolbar ---------- */
#toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.brand { font-size: 14px; margin-right: 4px; }
.brand .bolt { color: var(--accent); }
.brand .sub { color: var(--dim); font-size: 11px; margin-left: 7px; }
.spacer { flex: 1; }

.seg {
  display: flex; align-items: center; gap: 0;
  border: 1px solid var(--line);
  border-radius: 7px;
  overflow: hidden;
  background: var(--panel2);
}
.seg > * { border: 0; border-radius: 0; }
.seg > * + * { border-left: 1px solid var(--line); }

button, select, input {
  background: var(--panel2);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 4px 10px;
  font: inherit;
  cursor: pointer;
}
button:hover, select:hover { border-color: var(--accent2); }
button:active { transform: translateY(1px); }
button.accent { color: var(--bg); background: var(--accent); border-color: var(--accent); font-weight: 600; }
button.accent.paused { background: var(--panel2); color: var(--text); }
input[type=number] { width: 54px; cursor: text; }
select { max-width: 150px; }
#btn-theme { border-color: transparent; background: transparent; font-size: 15px; padding: 4px 7px; }

/* dropdown menus */
.menu { position: relative; }
.menu summary {
  list-style: none;
  cursor: pointer;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel2);
  user-select: none;
}
.menu summary::-webkit-details-marker { display: none; }
.menu[open] summary { border-color: var(--accent2); }
.menu-pop {
  position: absolute;
  top: calc(100% + 5px);
  left: 0;
  min-width: 200px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 5px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  box-shadow: 0 10px 28px rgba(0,0,0,.35);
  z-index: 40;
}
.menu-pop hr { border: 0; border-top: 1px solid var(--line); margin: 4px 2px; }
.menu-pop button {
  text-align: left;
  border-color: transparent;
  background: transparent;
  border-radius: 5px;
}
.menu-pop button:hover { background: var(--panel2); border-color: transparent; }

/* ---------- workspace ---------- */
#workspace { flex: 1; display: flex; min-height: 0; }
aside {
  width: 168px;
  background: var(--panel);
  border-right: 1px solid var(--line);
  overflow-y: auto;
  padding: 10px;
  flex-shrink: 0;
}
#inspector { border-right: 0; border-left: 1px solid var(--line); width: 224px; }
aside h2 {
  margin: 2px 0 8px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  color: var(--dim);
  font-weight: 600;
}
.palette-group h3 {
  margin: 10px 0 3px;
  font-size: 9.5px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--dim);
  opacity: .75;
  font-weight: 600;
}
.palette-item {
  padding: 3px 7px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 12px;
  border: 1px solid transparent;
}
.palette-item:hover { background: var(--panel2); }
.palette-item.active { background: var(--panel2); border-color: var(--accent2); }
.hint { color: var(--dim); font-size: 10.5px; margin-top: 14px; line-height: 1.55; opacity: .85; }

/* ---------- canvas ---------- */
#canvas-wrap { flex: 1; position: relative; overflow: auto; background: var(--bg); }
#canvas-scale { position: relative; transform-origin: 0 0; }
#canvas { display: block; }
input[type=range]#zoom-slider { padding: 0 4px; height: 22px; }
#canvas .grid-dot { fill: var(--grid-dot); }
#canvas .wire { fill: none; stroke: var(--wire-off); stroke-width: 2.4; stroke-linejoin: round; }
#canvas .wire.hot { filter: url(#glow); }
#canvas .wire.hot.ph-L1 { stroke: var(--ph-L1); }
#canvas .wire.hot.ph-L2 { stroke: var(--ph-L2); }
#canvas .wire.hot.ph-L3 { stroke: var(--ph-L3); }
#canvas .wire.hot.ph-N  { stroke: var(--ph-N); }
#canvas .wire.hot.ph-mix { stroke: var(--wire-mix); }
#canvas .wire.pending { stroke: var(--accent2); stroke-dasharray: 6 4; }
#canvas .terminal { cursor: crosshair; }
#canvas .comp-label {
  font: 11px var(--mono, monospace);
  fill: var(--sym-label);
  text-anchor: middle;
  pointer-events: none;
  user-select: none;
}
#canvas .sym { cursor: pointer; }
#canvas .sym.selected .sel-box { display: block; }
.sel-box { display: none; fill: none; stroke: var(--accent2); stroke-dasharray: 4 3; }

/* symbol theme classes */
#canvas .s-body   { fill: var(--sym-body); }
#canvas .s-stroke { stroke: var(--sym-idle); }
#canvas .s-stroke2 { stroke: var(--sym-border); }
#canvas .s-dim    { fill: var(--sym-dim); }
#canvas .s-hi     { fill: var(--text); }
#canvas .s-rotor  { stroke: var(--sym-rotor); }
#canvas .s-blade  { stroke: var(--hot); }

#toast {
  position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
  background: var(--bad-bg); color: var(--bad-text);
  border: 1px solid var(--bad);
  padding: 6px 15px; border-radius: 7px;
  font-size: 12.5px;
  transition: opacity .3s;
  z-index: 10;
}
#toast.hidden { opacity: 0; pointer-events: none; }

/* ---------- inspector ---------- */
#inspector-body.empty { color: var(--dim); font-size: 12px; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; font-size: 12px; margin-bottom: 12px; }
.kv .k { color: var(--dim); }
.kv .v { font-family: var(--mono, monospace); }
.kv .v.on { color: var(--ok); } .kv .v.off { color: var(--dim); opacity: .7; }
.kv .v.fault { color: var(--bad); font-weight: 700; }
.insp-title { font: 700 14px var(--mono, monospace); color: var(--accent); margin-bottom: 2px; }
.insp-type { color: var(--dim); font-size: 11px; margin-bottom: 10px; }
.param-row { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; }
.param-row label { flex: 1; font-size: 12px; color: var(--dim); }
.param-row input { width: 70px; cursor: text; }
.param-row .unit { color: var(--dim); font-size: 11px; width: 24px; }
.insp-actions { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 10px; }
.insp-actions button { font-size: 12px; padding: 3px 8px; }
.thermal-bar { height: 7px; background: var(--panel2); border-radius: 4px; overflow: hidden; margin: 4px 0 10px; }
.thermal-bar > div { height: 100%; background: linear-gradient(90deg, var(--ok), var(--accent), var(--bad)); }

/* ---------- bottom ---------- */
#bottom { border-top: 1px solid var(--line); background: var(--panel); }
#log-drawer[open] { display: flex; flex-direction: column; }
#log-drawer summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 3px 12px;
  cursor: pointer;
  font-size: 11px;
  color: var(--dim);
  user-select: none;
}
#log-drawer summary::-webkit-details-marker { display: none; }
#log-drawer .log-label { text-transform: uppercase; letter-spacing: 1.2px; font-size: 9.5px; font-weight: 600; }
#log-drawer .chev { margin-left: auto; transition: transform .15s; }
#log-drawer[open] .chev { transform: rotate(90deg); }
#log-ticker { font-family: var(--mono, monospace); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; opacity: .8; }
#eventlog {
  height: 96px; overflow-y: auto;
  padding: 2px 12px 6px;
  font: 11px var(--mono, monospace);
  border-top: 1px solid var(--line);
}
#eventlog .ev { white-space: nowrap; }
#eventlog .ev .t { color: var(--dim); opacity: .7; margin-right: 8px; }
#eventlog .ev.info { color: var(--text); opacity: .85; }
#eventlog .ev.warn { color: var(--accent); }
#eventlog .ev.fault { color: var(--bad); font-weight: 600; }
#statusbar {
  display: flex; align-items: center; gap: 14px;
  padding: 3px 12px;
  border-top: 1px solid var(--line);
  font: 11px var(--mono, monospace);
  color: var(--dim);
}
.dot { width: 7px; height: 7px; border-radius: 50%; display: inline-block; }
.dot.on { background: var(--ok); box-shadow: 0 0 6px var(--ok); }
.dot.off { background: var(--bad); }
#st-faults { color: var(--bad); font-weight: 700; }

/* ---------- MCP panel ---------- */
.mcp-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  vertical-align: 1px;
  margin-left: 3px;
}
.mcp-dot.idle { background: var(--dim); }
.mcp-dot.active { background: var(--ok); box-shadow: 0 0 6px var(--ok); }
.mcp-pop { min-width: 360px; max-width: 420px; font-size: 12px; }
#menu-mcp .menu-pop { left: auto; right: 0; }
.mcp-row { display: flex; justify-content: space-between; gap: 16px; padding: 2px 4px; }
.mcp-row .k { color: var(--dim); }
.mcp-row .v { font-family: var(--mono, monospace); }
.mcp-row .v.on { color: var(--ok); }
#mcp-config {
  background: var(--panel2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px;
  font: 10.5px var(--mono, monospace);
  overflow-x: auto;
  margin: 8px 0 6px;
  white-space: pre;
}
.mcp-hint { color: var(--dim); font-size: 11px; line-height: 1.5; margin: 6px 0 0; }
.mcp-hint code { font-family: var(--mono, monospace); color: var(--text); }

/* ---------- legend ---------- */
dialog#legend-dialog {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 20px;
  width: min(860px, 92vw);
  max-height: 86vh;
}
dialog#legend-dialog::backdrop { background: rgba(0,0,0,.55); }
.legend-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.legend-head h2 { margin: 0; font-size: 15px; }
#legend-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 10px;
  overflow-y: auto;
  max-height: 68vh;
}
.legend-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px;
  background: var(--panel2);
}
.legend-item svg { width: 64px; height: 84px; flex-shrink: 0; background: var(--bg); border-radius: 6px; }
.legend-item .lt { font-weight: 600; font-size: 12px; }
.legend-item .ld { color: var(--dim); font-size: 10.5px; line-height: 1.4; margin-top: 2px; }

/* ---------- tutorial ---------- */
#tut-overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(5,8,12,0.55);
  pointer-events: none; /* the UI under the dim stays clickable */
}
#tut-spot {
  position: fixed; z-index: 101;
  border-radius: 10px;
  box-shadow: 0 0 0 9999px rgba(5,8,12,0.62);
  border: 2px solid var(--accent2);
  pointer-events: none;
  transition: all .25s ease;
}
#tut-card {
  position: fixed; z-index: 102;
  pointer-events: auto;
  left: 50%; bottom: 90px; transform: translateX(-50%);
  width: min(560px, 92vw);
  background: var(--panel); color: var(--text);
  border: 1px solid var(--accent2);
  border-radius: 12px;
  padding: 16px 18px;
  box-shadow: 0 14px 40px rgba(0,0,0,.5);
}
#tut-step { font: 700 10px var(--mono, monospace); letter-spacing: 1.2px; color: var(--accent2); text-transform: uppercase; }
#tut-text { margin: 8px 0 12px; font-size: 14px; line-height: 1.55; }
#tut-text b { color: var(--accent); }
#tut-gate { font-size: 12px; color: var(--ok); font-weight: 600; margin-bottom: 10px; }
#tut-gate.hidden { display: none; }
.tut-btns { display: flex; gap: 8px; align-items: center; }
.tut-btns .spacer { flex: 1; }
#tut-next:disabled { opacity: .45; cursor: default; }

/* ---------- operator panel (mimic buttons + motor display) ---------- */
#mimic-panel {
  display: flex;
  gap: 28px;
  align-items: stretch;
  padding: 8px 14px 10px;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
}
#mimic-panel[hidden] { display: none; }
.mimic-group { display: flex; flex-direction: column; gap: 6px; }
.mimic-group h3 {
  margin: 0;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--dim);
}
.mimic-btns, .mimic-motlist { display: flex; gap: 14px; align-items: flex-start; flex-wrap: wrap; }
.mimic-empty { font-size: 11.5px; color: var(--dim); padding-top: 10px; }

/* round push buttons, like a real control-station panel */
.mimic-btn-wrap { display: flex; flex-direction: column; align-items: center; gap: 4px; min-width: 58px; }
.mimic-btn {
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 2.5px solid var(--line);
  font: 700 13px var(--mono, monospace);
  color: #fff;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
  box-shadow: 0 3px 0 rgba(0,0,0,.45), 0 5px 10px rgba(0,0,0,.3), inset 0 2px 3px rgba(255,255,255,.28);
  transition: transform .05s, box-shadow .05s;
}
.mimic-btn.no  { background: radial-gradient(circle at 34% 28%, #55d98d, var(--ok) 58%, #1d7a4a); }
.mimic-btn.nc  { background: radial-gradient(circle at 34% 28%, #f37a72, var(--bad) 58%, #8c1f1c); }
.mimic-btn:focus-visible { outline: 2px solid var(--accent2); outline-offset: 2px; }
.mimic-btn.pressed {
  transform: translateY(2.5px);
  box-shadow: 0 0.5px 0 rgba(0,0,0,.45), 0 2px 5px rgba(0,0,0,.35), inset 0 2px 6px rgba(0,0,0,.45);
}
.mimic-btn.pressed::after { content: ''; }
.mimic-cap {
  font-size: 10px;
  color: var(--dim);
  max-width: 74px;
  text-align: center;
  line-height: 1.15;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* motor rotation display */
.mimic-motor {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 5px 12px 5px 7px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel2);
}
.mimic-disc {
  position: relative;
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 2px solid var(--wire-off);
  flex: none;
  color: var(--dim);
}
.mimic-disc .rotor {
  position: absolute;
  inset: 0;
  animation: mimic-spin 1.4s linear infinite;
  animation-play-state: paused;
  transform-origin: 50% 50%;
}
.mimic-disc .rotor i {
  position: absolute;
  left: calc(50% - 1.5px);
  top: 2px;
  width: 3px;
  height: calc(50% - 2px);
  background: currentColor;
  border-radius: 2px;
}
.mimic-disc .rotor i::after {
  content: '';
  position: absolute;
  top: -4px; left: -3.5px;
  border: 5px solid transparent;
  border-bottom: 8px solid currentColor;
  transform: rotate(38deg);
}
.mimic-disc.run { border-color: var(--ok); color: var(--ok); }
.mimic-disc.coast { border-color: var(--accent); color: var(--accent); }
.mimic-disc.stall { border-color: var(--bad); color: var(--bad); }
.mimic-mot-meta { display: flex; flex-direction: column; line-height: 1.25; }
.mimic-mot-id { font: 700 11.5px var(--mono, monospace); color: var(--text); }
.mimic-mot-state { font-size: 10.5px; color: var(--dim); }
.mimic-mot-state.run { color: var(--ok); font-weight: 600; }
.mimic-mot-state.coast { color: var(--accent); font-weight: 600; }
.mimic-mot-state.stall { color: var(--bad-text); font-weight: 600; }
@keyframes mimic-spin { to { transform: rotate(360deg); } }