/* ══════════════════════════════════════════════════════════════════
   TITAN DDC · stylesheet
   Aesthetic: lab-grade instrumentation, industrial control room.
   ══════════════════════════════════════════════════════════════════ */

:root {
  /* ── Dark theme (default) ── */
  --bg-void:        #05070a;
  --bg-base:        #0a0d11;
  --bg-panel:       #10151b;
  --bg-raised:      #181e26;
  --bg-elevated:    #222a33;
  --bg-sunken:      #040608;
  --bg-canvas:      #070a0e;

  --border-hair:    #1b222b;
  --border-line:    #26303b;
  --border-strong:  #3b4755;
  --border-accent:  #4de4e8;

  --text-bright:    #f2f5f8;
  --text-primary:   #d8dde4;
  --text-secondary: #8d97a3;
  --text-muted:     #5a6470;
  --text-faint:     #353e48;

  --cyan:           #4de4e8;
  --cyan-dim:       #1d7a80;
  --cyan-glow:      rgba(77, 228, 232, 0.55);

  --green:          #3dd68c;
  --green-glow:     rgba(61, 214, 140, 0.55);

  --amber:          #f5b544;
  --amber-dim:      #8a6320;
  --amber-glow:     rgba(245, 181, 68, 0.55);

  --red:            #ff5d4f;
  --red-dim:        #8a2c24;
  --red-glow:       rgba(255, 93, 79, 0.55);

  --blue:           #5c9dff;
  --orange:         #ff9040;

  --wire-number:    #5c9dff;
  --wire-bool:      #ff9040;
  --wire-alarm:     #ff5d4f;

  --cat-input:      var(--green);
  --cat-logic:      var(--cyan);
  --cat-output:     var(--amber);

  --font-sans: 'IBM Plex Sans', system-ui, sans-serif;
  --font-cond: 'IBM Plex Sans Condensed', 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  --rail-h: 52px;
  --strip-h: 32px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

/* ── Light theme override ── */
html[data-theme='light'] {
  --bg-void:        #dce0e6;
  --bg-base:        #eef1f5;
  --bg-panel:       #f7f9fb;
  --bg-raised:      #ffffff;
  --bg-elevated:    #ffffff;
  --bg-sunken:      #e4e8ee;
  --bg-canvas:      #edf0f4;

  --border-hair:    #dce1e8;
  --border-line:    #c8d0da;
  --border-strong:  #a8b2bf;
  --border-accent:  #0aa2a7;

  --text-bright:    #0a0c10;
  --text-primary:   #1a1f27;
  --text-secondary: #4a5560;
  --text-muted:     #78828e;
  --text-faint:     #b5bcc5;

  --cyan:           #0a8a90;
  --cyan-glow:      rgba(10, 138, 144, 0.35);
  --green:          #1a9b62;
  --green-glow:     rgba(26, 155, 98, 0.35);
  --amber:          #c27d0b;
  --amber-glow:     rgba(194, 125, 11, 0.35);
  --red:            #cc3023;
  --red-glow:       rgba(204, 48, 35, 0.35);
}

/* ── Reset / base ── */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg-void);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.45;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden;
}

body {
  /* subtle noise texture for atmosphere */
  background-image:
    radial-gradient(ellipse 100% 60% at 50% 0%, rgba(77, 228, 232, 0.025), transparent 70%),
    radial-gradient(ellipse 80% 50% at 80% 100%, rgba(245, 181, 68, 0.015), transparent 60%);
  background-attachment: fixed;
}

button {
  font-family: inherit;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

input, select, textarea { font-family: inherit; }

::selection { background: var(--cyan-dim); color: var(--text-bright); }

/* Scrollbar */
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: var(--bg-sunken); }
*::-webkit-scrollbar-thumb { background: var(--border-line); border-radius: 0; border: 2px solid var(--bg-sunken); }
*::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

/* ── App shell ── */
.app {
  display: grid;
  grid-template-rows: var(--rail-h) 1fr;
  height: 100vh;
  width: 100vw;
  background: var(--bg-base);
  position: relative;
}

/* ══════════════════════════════════════════════════════════════════
   TOP RAIL
   ══════════════════════════════════════════════════════════════════ */
.rail {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: var(--rail-h);
  padding: 0 16px;
  background: linear-gradient(180deg, var(--bg-panel) 0%, var(--bg-base) 100%);
  border-bottom: 1px solid var(--border-hair);
  position: relative;
  z-index: 40;
}

.rail::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-accent) 20%, var(--border-accent) 80%, transparent);
  opacity: 0.12;
}

.rail-left { display: flex; align-items: center; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { color: var(--cyan); filter: drop-shadow(0 0 6px var(--cyan-glow)); }
.brand-stack { display: flex; flex-direction: column; line-height: 1.05; }
.brand-text {
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.08em;
  color: var(--text-bright);
}
.brand-accent { color: var(--cyan); margin: 0 2px; font-weight: 400; }
.brand-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: 2px;
}

/* Nav */
.rail-nav { display: flex; gap: 2px; background: var(--bg-sunken); border: 1px solid var(--border-hair); padding: 3px; border-radius: 2px; }
.rail-btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 32px; padding: 0 16px;
  background: transparent; border: none;
  color: var(--text-secondary);
  font-family: var(--font-cond);
  font-size: 12px; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase;
  border-radius: 2px;
  transition: color 0.12s, background 0.12s;
}
.rail-btn:hover { color: var(--text-primary); background: var(--bg-raised); }
.rail-btn.is-active {
  background: var(--bg-raised);
  color: var(--cyan);
  box-shadow: inset 0 -1px 0 var(--cyan), inset 0 0 0 1px var(--border-hair);
}
.rail-btn svg { opacity: 0.85; }

.rail-right { display: flex; align-items: center; gap: 16px; justify-content: flex-end; }

.rail-status {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 12px;
  background: var(--bg-sunken);
  border: 1px solid var(--border-hair);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-secondary);
}
.status-label { color: var(--green); }

.rail-clock {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--text-bright);
  padding: 6px 14px;
  background: var(--bg-sunken);
  border: 1px solid var(--border-hair);
  border-radius: 2px;
  min-width: 104px;
  text-align: center;
}

.rail-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  background: var(--bg-sunken);
  border: 1px solid var(--border-hair);
  border-radius: 2px;
  color: var(--text-secondary);
  transition: color 0.12s, background 0.12s, border-color 0.12s;
}
.rail-icon:hover { color: var(--cyan); border-color: var(--border-line); }

/* LEDs */
.led {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--text-faint);
  position: relative;
}
.led::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: inherit;
  opacity: 0.25;
  filter: blur(3px);
}
.led-ok    { background: var(--green); box-shadow: 0 0 4px var(--green-glow), inset 0 0 2px rgba(255,255,255,0.4); }
.led-ok::after { background: var(--green); }
.led-warn  { background: var(--amber); box-shadow: 0 0 4px var(--amber-glow), inset 0 0 2px rgba(255,255,255,0.4); }
.led-warn::after { background: var(--amber); }
.led-crit  { background: var(--red); box-shadow: 0 0 5px var(--red-glow), inset 0 0 2px rgba(255,255,255,0.4); animation: led-pulse 1.2s ease-in-out infinite; }
.led-crit::after { background: var(--red); }
@keyframes led-pulse {
  0%,100% { box-shadow: 0 0 4px var(--red-glow); }
  50%     { box-shadow: 0 0 12px var(--red-glow), 0 0 3px rgba(255,255,255,0.3) inset; }
}

/* ══════════════════════════════════════════════════════════════════
   VIEWS
   ══════════════════════════════════════════════════════════════════ */
.view { display: none; height: 100%; min-height: 0; }
.view.is-active { display: flex; }

.view-dashboard {
  flex-direction: column;
  overflow: hidden;
}

/* ══════════════════════════════════════════════════════════════════
   ALARM BANNER
   ══════════════════════════════════════════════════════════════════ */
.alarm-banner {
  display: flex;
  align-items: stretch;
  height: 44px;
  margin: 12px 16px 0;
  background: var(--bg-panel);
  border: 1px solid var(--border-hair);
  position: relative;
  overflow: hidden;
}
.alarm-banner.state-ok   { --a: var(--green);   --a-glow: var(--green-glow); }
.alarm-banner.state-warn { --a: var(--amber);   --a-glow: var(--amber-glow); }
.alarm-banner.state-crit { --a: var(--red);     --a-glow: var(--red-glow); }

.alarm-stripe {
  width: 4px;
  background: var(--a);
  box-shadow: 0 0 16px var(--a-glow);
}
.alarm-chevron {
  width: 22px;
  background: repeating-linear-gradient(-45deg, transparent 0, transparent 5px, var(--a) 5px, var(--a) 7px);
  opacity: 0.35;
}
.alarm-content {
  flex: 1;
  display: flex; align-items: center; gap: 16px;
  padding: 0 16px;
}
.alarm-prio {
  font-family: var(--font-cond);
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--a);
  padding: 3px 8px;
  border: 1px solid var(--a);
  background: rgba(245, 181, 68, 0.08);
}
.state-crit .alarm-prio { background: rgba(255, 93, 79, 0.08); }
.state-ok   .alarm-prio { background: rgba(61, 214, 140, 0.08); }
.alarm-text {
  font-size: 13px;
  color: var(--text-primary);
  flex: 1;
}
.alarm-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}
.alarm-ack {
  font-family: var(--font-cond);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  padding: 6px 14px;
  background: transparent;
  color: var(--a);
  border: 1px solid var(--a);
  border-radius: 2px;
  transition: background 0.12s, color 0.12s;
}
.alarm-ack:hover { background: var(--a); color: var(--bg-base); }

/* ══════════════════════════════════════════════════════════════════
   DASH GRID
   ══════════════════════════════════════════════════════════════════ */
.dash-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  grid-template-rows: auto 1fr;
  gap: 12px;
  padding: 12px 16px;
  flex: 1;
  min-height: 0;
  overflow: auto;
}
.tiles-section { grid-column: 1; grid-row: 1; }
.schematic-section { grid-column: 1; grid-row: 2; min-height: 380px; }
.event-section { grid-column: 2; grid-row: 1 / span 2; }

/* ══════════════════════════════════════════════════════════════════
   PANEL / SECTION
   ══════════════════════════════════════════════════════════════════ */
.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-hair);
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.panel-corners i {
  position: absolute;
  width: 10px; height: 10px;
  border: 1px solid var(--cyan);
  opacity: 0.5;
  pointer-events: none;
}
.panel-corners i:nth-child(1) { top: -1px;    left: -1px;    border-right: none; border-bottom: none; }
.panel-corners i:nth-child(2) { top: -1px;    right: -1px;   border-left: none;  border-bottom: none; }
.panel-corners i:nth-child(3) { bottom: -1px; left: -1px;    border-right: none; border-top: none; }
.panel-corners i:nth-child(4) { bottom: -1px; right: -1px;   border-left: none;  border-top: none; }

.panel-header {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-hair);
  background: linear-gradient(180deg, rgba(77, 228, 232, 0.02), transparent);
}
.panel-num {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: 0.1em;
  padding: 2px 6px;
  border: 1px solid var(--cyan-dim);
  background: rgba(77, 228, 232, 0.05);
}
.panel-title {
  font-family: var(--font-cond);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-bright);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.panel-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}
.panel-actions { margin-left: auto; display: flex; gap: 4px; }
.panel-btn {
  font-family: var(--font-cond);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.15em;
  padding: 4px 10px;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-hair);
  border-radius: 1px;
  transition: color 0.12s, background 0.12s, border-color 0.12s;
}
.panel-btn:hover { color: var(--text-primary); border-color: var(--border-line); background: var(--bg-raised); }
.panel-btn.is-active { color: var(--cyan); border-color: var(--cyan-dim); background: rgba(77, 228, 232, 0.06); }
.panel-btn.is-ghost { color: var(--text-muted); }

/* ══════════════════════════════════════════════════════════════════
   TILES
   ══════════════════════════════════════════════════════════════════ */
.tiles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1px;
  background: var(--border-hair);
  padding: 1px;
}

.tile {
  position: relative;
  background: var(--bg-panel);
  padding: 14px 16px 12px;
  display: flex; flex-direction: column; gap: 8px;
  min-height: 118px;
  transition: background 0.15s;
  cursor: pointer;
}
.tile:hover { background: var(--bg-raised); }

.tile-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 8px;
}
.tile-label {
  font-family: var(--font-cond);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--text-secondary);
  text-transform: uppercase;
  line-height: 1.35;
}
.tile-id {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--text-faint);
  letter-spacing: 0.04em;
}
.tile-body {
  display: flex; align-items: baseline; gap: 4px;
  font-variant-numeric: tabular-nums;
}
.tile-value {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 400;
  color: var(--text-bright);
  letter-spacing: -0.01em;
  line-height: 1;
}
.tile-unit {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  margin-left: 4px;
  letter-spacing: 0.04em;
}
.tile-value.is-hot   { color: #ff7d52; }
.tile-value.is-cold  { color: #7dbfff; }
.tile-value.is-warn  { color: var(--amber); }
.tile-value.is-crit  { color: var(--red); }

.tile-foot {
  display: flex; align-items: flex-end; gap: 8px;
  margin-top: auto;
  height: 30px;
}
.tile-spark {
  flex: 1;
  height: 30px;
  overflow: hidden;
}
.tile-spark svg { width: 100%; height: 100%; display: block; }
.tile-spark path.line { fill: none; stroke: var(--cyan); stroke-width: 1.25; opacity: 0.9; vector-effect: non-scaling-stroke; }
.tile-spark path.area { fill: var(--cyan); opacity: 0.08; }
.tile.is-hot .tile-spark path.line { stroke: #ff7d52; }
.tile.is-hot .tile-spark path.area { fill: #ff7d52; }
.tile.is-cold .tile-spark path.line { stroke: #7dbfff; }
.tile.is-cold .tile-spark path.area { fill: #7dbfff; }
.tile.is-warn .tile-spark path.line { stroke: var(--amber); }
.tile.is-warn .tile-spark path.area { fill: var(--amber); }

.tile-delta {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  white-space: nowrap;
}
.tile-delta.up   { color: var(--green); }
.tile-delta.down { color: var(--red); }

.tile-state {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 0 0 0;
  font-family: var(--font-cond);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
}
.tile-state.on  { color: var(--green); }
.tile-state.off { color: var(--text-muted); }

.tile-sidebar {
  position: absolute;
  left: 0; top: 14%; bottom: 14%;
  width: 2px;
  background: var(--text-faint);
}
.tile.is-hot .tile-sidebar   { background: #ff7d52; box-shadow: 0 0 8px rgba(255,125,82,0.35); }
.tile.is-cold .tile-sidebar  { background: #7dbfff; box-shadow: 0 0 8px rgba(125,191,255,0.35); }
.tile.is-warn .tile-sidebar  { background: var(--amber); box-shadow: 0 0 8px var(--amber-glow); }
.tile.is-crit .tile-sidebar  { background: var(--red); box-shadow: 0 0 8px var(--red-glow); }
.tile.is-ok .tile-sidebar    { background: var(--green); box-shadow: 0 0 8px var(--green-glow); }

/* ══════════════════════════════════════════════════════════════════
   SCHEMATIC
   ══════════════════════════════════════════════════════════════════ */
.schematic-wrap {
  flex: 1;
  min-height: 0;
  position: relative;
  background:
    radial-gradient(ellipse at center, rgba(77,228,232,0.03) 0%, transparent 70%),
    var(--bg-sunken);
  padding: 16px;
  display: flex;
  overflow: hidden;
}
.schematic-legend {
  position: absolute;
  top: 12px; right: 16px;
  display: flex; gap: 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  z-index: 2;
}
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.legend-item .dot { width: 10px; height: 2px; }
.legend-item .dot.pipe-hot { background: #ff7d52; }
.legend-item .dot.pipe-cold { background: #7dbfff; }
.legend-item .dot.signal { background: var(--cyan); }

.schematic-panel {
  flex: 1;
  position: relative;
  overflow: hidden;
}
.schematic-panel svg { width: 100%; height: 100%; display: block; }

/* ══════════════════════════════════════════════════════════════════
   EVENT LOG
   ══════════════════════════════════════════════════════════════════ */
.event-log {
  flex: 1;
  overflow-y: auto;
  padding: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
}
.event-row {
  display: grid;
  grid-template-columns: 60px 14px 1fr;
  gap: 8px;
  padding: 7px 8px;
  border-bottom: 1px solid var(--border-hair);
  color: var(--text-secondary);
  line-height: 1.35;
}
.event-row:hover { background: var(--bg-raised); }
.event-time { color: var(--text-muted); letter-spacing: 0.02em; }
.event-pip  { font-size: 14px; text-align: center; line-height: 1; }
.event-row.info  .event-pip { color: var(--cyan); }
.event-row.ok    .event-pip { color: var(--green); }
.event-row.warn  .event-pip { color: var(--amber); }
.event-row.crit  .event-pip { color: var(--red); }
.event-row.crit  .event-msg { color: var(--text-primary); }
.event-msg {
  color: var(--text-primary);
  word-break: break-word;
}
.event-msg b { color: var(--cyan); font-weight: 500; }

/* ══════════════════════════════════════════════════════════════════
   STATUS STRIP (bottom)
   ══════════════════════════════════════════════════════════════════ */
.status-strip {
  display: flex;
  align-items: center;
  height: var(--strip-h);
  padding: 0 16px;
  gap: 18px;
  background: var(--bg-panel);
  border-top: 1px solid var(--border-hair);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  overflow-x: auto;
  flex-shrink: 0;
}
.strip-spacer { flex: 1; }
.strip-item { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
.strip-key { color: var(--text-muted); }
.strip-val { color: var(--text-primary); }
.strip-val.ok { color: var(--green); }
.strip-val.warn { color: var(--amber); }
.strip-val.crit { color: var(--red); }
.strip-bar {
  display: inline-block;
  width: 60px; height: 4px;
  background: var(--bg-sunken);
  border: 1px solid var(--border-hair);
  position: relative;
}
.strip-bar i {
  display: block;
  height: 100%;
  background: var(--cyan);
  box-shadow: 0 0 4px var(--cyan-glow);
  transition: width 0.4s var(--ease-out);
}

/* ══════════════════════════════════════════════════════════════════
   LOGIC EDITOR
   ══════════════════════════════════════════════════════════════════ */
.view-editor {
  display: none;
  flex-direction: row;
  height: 100%;
  min-height: 0;
}
.view-editor.is-active { display: flex; }

/* ── Palette ── */
.palette {
  width: 272px;
  flex-shrink: 0;
  background: var(--bg-panel);
  border-right: 1px solid var(--border-hair);
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.palette-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-hair);
}
.palette-title {
  font-family: var(--font-cond);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--text-bright);
}
.palette-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--cyan);
  padding: 2px 6px;
  border: 1px solid var(--cyan-dim);
  background: rgba(77,228,232,0.05);
  letter-spacing: 0.1em;
}
.palette-search {
  position: relative;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-hair);
}
.palette-search svg {
  position: absolute;
  left: 22px; top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}
.palette-search input {
  width: 100%;
  padding: 7px 8px 7px 30px;
  background: var(--bg-sunken);
  border: 1px solid var(--border-hair);
  color: var(--text-primary);
  font-size: 12px;
  outline: none;
  transition: border-color 0.12s;
}
.palette-search input:focus { border-color: var(--cyan-dim); box-shadow: 0 0 0 1px var(--cyan-dim); }

.palette-groups {
  flex: 1;
  overflow-y: auto;
  padding: 6px 0 8px;
}
.palette-group { padding: 10px 0 6px; }
.palette-group-head {
  display: flex; align-items: center; gap: 8px;
  padding: 2px 14px 8px;
  font-family: var(--font-cond);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--text-secondary);
}
.palette-group-head .bar {
  flex: 1; height: 1px; background: var(--border-hair);
}
.palette-group[data-cat='input']  .palette-group-head .bar { background: linear-gradient(90deg, var(--cat-input), transparent); opacity: 0.4; }
.palette-group[data-cat='logic']  .palette-group-head .bar { background: linear-gradient(90deg, var(--cat-logic), transparent); opacity: 0.4; }
.palette-group[data-cat='output'] .palette-group-head .bar { background: linear-gradient(90deg, var(--cat-output), transparent); opacity: 0.4; }

.palette-item {
  display: grid;
  grid-template-columns: 32px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  margin: 1px 6px;
  cursor: grab;
  position: relative;
  border: 1px solid transparent;
  transition: background 0.1s, border-color 0.1s;
}
.palette-item:hover {
  background: var(--bg-raised);
  border-color: var(--border-hair);
}
.palette-item:active { cursor: grabbing; }

.palette-icon {
  width: 28px; height: 28px;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--border-hair);
  background: var(--bg-sunken);
}
.palette-group[data-cat='input']  .palette-icon { color: var(--cat-input);  border-color: rgba(61,214,140,0.35); }
.palette-group[data-cat='logic']  .palette-icon { color: var(--cat-logic);  border-color: rgba(77,228,232,0.35); }
.palette-group[data-cat='output'] .palette-icon { color: var(--cat-output); border-color: rgba(245,181,68,0.35); }

.palette-label {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.25;
}
.palette-sub {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-top: 1px;
}
.palette-grip {
  font-family: var(--font-mono);
  color: var(--text-faint);
  font-size: 14px;
  opacity: 0;
  transition: opacity 0.12s;
}
.palette-item:hover .palette-grip { opacity: 1; }

.palette-footer {
  padding: 10px 14px;
  border-top: 1px solid var(--border-hair);
  background: var(--bg-sunken);
}
.palette-footer .hint {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* ── Editor main ── */
.editor-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  position: relative;
  background: var(--bg-canvas);
}

/* Toolbar */
.editor-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-hair);
  flex-shrink: 0;
  z-index: 5;
}
.tb-group { display: flex; gap: 2px; }
.tb-btn {
  display: inline-flex; align-items: center; gap: 7px;
  height: 28px; padding: 0 10px;
  background: var(--bg-sunken);
  color: var(--text-secondary);
  border: 1px solid var(--border-hair);
  font-family: var(--font-cond);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  transition: color 0.1s, border-color 0.1s, background 0.1s;
}
.tb-btn:hover { color: var(--text-primary); border-color: var(--border-line); background: var(--bg-raised); }
.tb-btn:active { background: var(--bg-base); }
.tb-btn svg { opacity: 0.75; }
.tb-btn.tb-icon { width: 28px; padding: 0; justify-content: center; font-size: 16px; }
.tb-btn.tb-danger:hover { color: var(--red); border-color: var(--red-dim); }
.tb-btn.tb-deploy {
  color: var(--green);
  background: rgba(61,214,140,0.04);
  border-color: rgba(61,214,140,0.3);
}
.tb-btn.tb-deploy:hover { background: rgba(61,214,140,0.1); color: var(--text-bright); }

.tb-sep { width: 1px; height: 20px; background: var(--border-hair); margin: 0 4px; }
.tb-spacer { flex: 1; }

.tb-zoom {
  background: var(--bg-sunken);
  border: 1px solid var(--border-hair);
  padding: 2px;
  display: flex;
  align-items: center;
  gap: 2px;
}
.tb-zoom .tb-btn { background: transparent; border-color: transparent; }
.tb-zoom .tb-btn:hover { background: var(--bg-raised); }
.zoom-display {
  padding: 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-primary);
  min-width: 60px;
  text-align: center;
  letter-spacing: 0.04em;
}

.tb-info {
  display: flex; gap: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
}
.info-kv { display: inline-flex; gap: 6px; align-items: center; }
.info-k { color: var(--text-muted); text-transform: uppercase; }
.info-v { color: var(--text-bright); font-weight: 500; }

/* Canvas viewport */
.canvas-viewport {
  flex: 1;
  position: relative;
  overflow: hidden;
  cursor: default;
  background: var(--bg-canvas);
}
.canvas-viewport.is-panning { cursor: grabbing; }

.canvas-grid {
  --grid-major-size: 240px 240px;
  --grid-major-pos: 0 0;
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, var(--border-hair) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: 0 0;
  pointer-events: none;
  z-index: 0;
}
.canvas-grid::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--border-hair) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border-hair) 1px, transparent 1px);
  background-size: var(--grid-major-size);
  background-position: var(--grid-major-pos);
  opacity: 0.6;
  pointer-events: none;
}

.canvas-world {
  position: absolute;
  top: 0; left: 0;
  transform-origin: 0 0;
  will-change: transform;
}

.wires-layer {
  position: absolute;
  top: 0; left: 0;
  width: 10000px; height: 10000px;
  pointer-events: none;
  overflow: visible;
}
.wire-path {
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  pointer-events: stroke;
  cursor: pointer;
  transition: stroke-width 0.12s, filter 0.12s;
}
.wire-path.hover { stroke-width: 3; filter: drop-shadow(0 0 4px currentColor); }
.wire-path.type-number { stroke: var(--wire-number); }
.wire-path.type-bool   { stroke: var(--wire-bool); }
.wire-path.type-alarm  { stroke: var(--wire-alarm); }

.wire-flow {
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 4 14;
  opacity: 0.7;
  animation: wire-flow 1.8s linear infinite;
  pointer-events: none;
}
.wire-flow.type-number { stroke: var(--wire-number); }
.wire-flow.type-bool   { stroke: var(--wire-bool); }
.wire-flow.type-alarm  { stroke: var(--wire-alarm); }
@keyframes wire-flow {
  from { stroke-dashoffset: 0; }
  to   { stroke-dashoffset: -18; }
}

.drag-wire {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 2;
  stroke-dasharray: 3 4;
  opacity: 0.85;
  pointer-events: none;
  display: none;
  filter: drop-shadow(0 0 3px var(--cyan-glow));
}

.blocks-layer {
  position: relative;
  pointer-events: none;
}

/* ── Block ── */
.block {
  position: absolute;
  width: 212px;
  background: var(--bg-raised);
  border: 1px solid var(--border-line);
  pointer-events: auto;
  user-select: none;
  font-family: var(--font-sans);
  transition: border-color 0.1s, box-shadow 0.15s;
}
.block::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--cat-logic);
}
.block[data-cat='input']::before  { background: var(--cat-input); }
.block[data-cat='logic']::before  { background: var(--cat-logic); }
.block[data-cat='output']::before { background: var(--cat-output); }

.block.is-selected {
  border-color: var(--cyan);
  box-shadow:
    0 0 0 1px var(--cyan),
    0 0 20px rgba(77, 228, 232, 0.25),
    0 6px 20px rgba(0,0,0,0.4);
  z-index: 10;
}

.block-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px 8px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-hair);
  cursor: grab;
}
.block-head:active { cursor: grabbing; }

.block-icon {
  width: 22px; height: 22px;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  background: var(--bg-sunken);
  border: 1px solid var(--border-hair);
}
.block[data-cat='input']  .block-icon { color: var(--cat-input);  border-color: rgba(61,214,140,0.35); }
.block[data-cat='logic']  .block-icon { color: var(--cat-logic);  border-color: rgba(77,228,232,0.35); }
.block[data-cat='output'] .block-icon { color: var(--cat-output); border-color: rgba(245,181,68,0.35); }

.block-label {
  flex: 1;
  min-width: 0;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-bright);
  line-height: 1.2;
  letter-spacing: 0.01em;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.block-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.block-id {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-faint);
  letter-spacing: 0.04em;
}

.block-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 6px 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
}
.block-ins, .block-outs {
  display: flex;
  flex-direction: column;
}
.block-outs { align-items: flex-end; }

.pin-row {
  display: flex;
  align-items: center;
  height: 22px;
  padding: 0 12px 0 8px;
  position: relative;
  gap: 6px;
}
.block-outs .pin-row {
  flex-direction: row-reverse;
  padding: 0 8px 0 12px;
}
.pin {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--bg-base);
  border: 2px solid var(--text-muted);
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  cursor: crosshair;
  z-index: 2;
  transition: transform 0.12s, border-color 0.12s, box-shadow 0.12s;
}
.block-ins .pin { left: -5px; }
.block-outs .pin { right: -5px; }
.pin[data-type='number'] { border-color: var(--wire-number); }
.pin[data-type='bool']   { border-color: var(--wire-bool); }
.pin[data-type='alarm']  { border-color: var(--wire-alarm); }
.pin:hover,
.pin.is-target {
  transform: translateY(-50%) scale(1.4);
  box-shadow: 0 0 10px currentColor;
  background: currentColor;
  color: inherit;
}
.pin[data-type='number']:hover, .pin[data-type='number'].is-target { color: var(--wire-number); }
.pin[data-type='bool']:hover,   .pin[data-type='bool'].is-target   { color: var(--wire-bool); }
.pin[data-type='alarm']:hover,  .pin[data-type='alarm'].is-target  { color: var(--wire-alarm); }

.pin.is-connected {
  background: currentColor;
  color: var(--text-muted);
}
.pin[data-type='number'].is-connected { background: var(--wire-number); color: var(--wire-number); }
.pin[data-type='bool'].is-connected   { background: var(--wire-bool); color: var(--wire-bool); }
.pin[data-type='alarm'].is-connected  { background: var(--wire-alarm); color: var(--wire-alarm); }

.pin-label {
  font-size: 10.5px;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  line-height: 1;
  padding-left: 6px;
}
.block-outs .pin-label { padding-left: 0; padding-right: 6px; }

.block-foot {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-top: 1px solid var(--border-hair);
  background: var(--bg-sunken);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}
.block-foot .val {
  color: var(--text-primary);
  padding: 1px 5px;
  background: var(--bg-base);
  border: 1px solid var(--border-hair);
}
.block-foot .pill {
  margin-left: auto;
  display: inline-flex; align-items: center; gap: 5px;
  padding: 1px 6px;
  border: 1px solid var(--border-hair);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.block-foot .pill.live { color: var(--green); border-color: rgba(61,214,140,0.3); }

/* Canvas HUD */
.canvas-hud {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  display: flex;
  justify-content: space-between;
  padding: 8px 12px;
  pointer-events: none;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  z-index: 3;
}
.hud-left, .hud-right { display: flex; gap: 14px; }
.hud-kv { display: inline-flex; gap: 4px; }
.hud-kv b { color: var(--text-muted); font-weight: 400; }
.hud-kv span { color: var(--text-primary); }
.hud-hint b {
  display: inline-block;
  padding: 1px 5px;
  background: var(--bg-sunken);
  border: 1px solid var(--border-hair);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 9.5px;
  margin: 0 2px;
}

/* ── Properties panel ── */
.properties {
  width: 308px;
  flex-shrink: 0;
  background: var(--bg-panel);
  border-left: 1px solid var(--border-hair);
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.props-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-hair);
}
.props-title {
  font-family: var(--font-cond);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--text-bright);
}
.props-id {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}
.props-body {
  flex: 1;
  overflow-y: auto;
}
.props-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
  height: 100%;
}
.props-empty svg { color: var(--text-faint); margin-bottom: 16px; }
.props-empty-title {
  font-family: var(--font-cond);
  font-size: 12px; font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.props-empty-text {
  font-size: 11.5px;
  color: var(--text-muted);
  line-height: 1.5;
}

.props-block-head {
  padding: 14px;
  background: var(--bg-sunken);
  border-bottom: 1px solid var(--border-hair);
  display: flex; align-items: center; gap: 10px;
}
.props-block-head .block-icon { width: 32px; height: 32px; font-size: 16px; }
.props-block-head .title {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column; gap: 2px;
}
.props-block-head .name {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-bright);
  letter-spacing: 0.01em;
}
.props-block-head .sub {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.props-section {
  padding: 14px;
  border-bottom: 1px solid var(--border-hair);
}
.props-section-head {
  font-family: var(--font-cond);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--text-secondary);
  margin-bottom: 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-hair);
}

.prop-row {
  display: grid;
  grid-template-columns: 100px 1fr;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.prop-row label {
  font-size: 11px;
  color: var(--text-secondary);
  font-family: var(--font-cond);
  letter-spacing: 0.04em;
}
.prop-input {
  padding: 6px 8px;
  background: var(--bg-sunken);
  border: 1px solid var(--border-hair);
  color: var(--text-primary);
  font-size: 11.5px;
  font-family: var(--font-mono);
  outline: none;
  width: 100%;
  transition: border-color 0.12s;
}
.prop-input:focus {
  border-color: var(--cyan-dim);
  box-shadow: 0 0 0 1px var(--cyan-dim);
}
select.prop-input { cursor: pointer; }

.prop-curve {
  grid-column: 1 / span 2;
}
.prop-curve-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 11px;
  margin-top: 6px;
}
.prop-curve-table th {
  text-align: left;
  padding: 4px 6px;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border-hair);
  background: var(--bg-sunken);
}
.prop-curve-table td { padding: 0; }
.prop-curve-table input {
  width: 100%;
  padding: 5px 6px;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid transparent;
  border-bottom: 1px solid var(--border-hair);
  font-family: var(--font-mono);
  font-size: 11px;
  outline: none;
}
.prop-curve-table input:focus { background: var(--bg-sunken); border-color: var(--cyan-dim); }
.prop-curve-table tr:hover td { background: var(--bg-raised); }

.props-pins {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 10.5px;
}
.props-pin {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  color: var(--text-primary);
}
.props-pin .pin-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--bg-base);
  border: 2px solid var(--text-muted);
}
.props-pin[data-type='number'] .pin-dot { border-color: var(--wire-number); }
.props-pin[data-type='bool']   .pin-dot { border-color: var(--wire-bool); }
.props-pin[data-type='alarm']  .pin-dot { border-color: var(--wire-alarm); }
.props-pin .type {
  color: var(--text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 9.5px;
}

.props-actions {
  padding: 14px;
  display: flex;
  gap: 8px;
}
.props-btn {
  flex: 1;
  height: 32px;
  background: var(--bg-sunken);
  border: 1px solid var(--border-hair);
  color: var(--text-secondary);
  font-family: var(--font-cond);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  transition: color 0.1s, border-color 0.1s, background 0.1s;
}
.props-btn:hover { color: var(--text-primary); border-color: var(--border-line); background: var(--bg-raised); }
.props-btn.danger:hover {
  color: var(--red);
  border-color: var(--red-dim);
  background: rgba(255,93,79,0.06);
}

/* ══════════════════════════════════════════════════════════════════
   DRAG GHOST (palette → canvas)
   ══════════════════════════════════════════════════════════════════ */
.drag-ghost {
  position: fixed;
  pointer-events: none;
  z-index: 100;
  padding: 6px 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--cyan);
  box-shadow: 0 0 20px var(--cyan-glow), 0 4px 12px rgba(0,0,0,0.4);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-bright);
  display: none;
  transform: translate(-50%, -50%);
}
.drag-ghost.is-active { display: block; }
.drag-ghost::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--cyan);
}

/* ══════════════════════════════════════════════════════════════════
   TOASTS
   ══════════════════════════════════════════════════════════════════ */
.toast-stack {
  position: fixed;
  bottom: 44px; right: 20px;
  display: flex;
  flex-direction: column-reverse;
  gap: 8px;
  z-index: 120;
  pointer-events: none;
}
.toast {
  min-width: 280px;
  padding: 10px 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--cyan);
  box-shadow: 0 0 20px var(--cyan-glow), 0 4px 16px rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: toast-in 0.3s var(--ease-out);
  pointer-events: auto;
  font-size: 12px;
}
.toast.state-ok   { border-color: var(--green); box-shadow: 0 0 20px var(--green-glow), 0 4px 16px rgba(0,0,0,0.5); }
.toast.state-warn { border-color: var(--amber); box-shadow: 0 0 20px var(--amber-glow), 0 4px 16px rgba(0,0,0,0.5); }
.toast.state-crit { border-color: var(--red); box-shadow: 0 0 20px var(--red-glow), 0 4px 16px rgba(0,0,0,0.5); }
@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}
.toast-icon { flex-shrink: 0; color: var(--cyan); font-family: var(--font-mono); font-size: 14px; }
.toast.state-ok .toast-icon { color: var(--green); }
.toast.state-warn .toast-icon { color: var(--amber); }
.toast.state-crit .toast-icon { color: var(--red); }
.toast-msg { color: var(--text-primary); }
.toast-msg b { color: var(--text-bright); font-weight: 500; }

/* ══════════════════════════════════════════════════════════════════
   Responsive tweaks
   ══════════════════════════════════════════════════════════════════ */
@media (max-width: 1100px) {
  .palette { width: 232px; }
  .properties { width: 272px; }
  .dash-grid { grid-template-columns: 1fr; }
  .event-section { grid-column: 1; grid-row: auto; min-height: 240px; }
}