:root {
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --bg: #f4f5f7;
  --panel: #ffffff;
  --panel-2: #f8f9fb;
  --border: #e3e6eb;
  --border-strong: #cfd4dc;
  --text: #101828;
  --muted: #667085;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-weak: #eef2ff;
  --danger: #dc2626;
  --warn: #b45309;
  --success: #15803d;
  --hover: #f1f3f6;
  --canvas: #fbfbfc;
  --grid-minor: #eef0f3;
  --grid-major: #e1e5eb;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 8px 24px rgba(16, 24, 40, .08);
  --dv-bg: var(--canvas);
  --dv-device: #ffffff;
  --dv-device-stroke: #cbd2dc;
  --dv-text: #344054;
  --dv-accent: #4f46e5;
  --brand-ink: #111111;     /* Engage Live Flows lockup (brand kit, module colour #ec4899) */
  --brand-accent: #ec4899;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #0e1014;
  --panel: #161920;
  --panel-2: #1b1f27;
  --border: #272c36;
  --border-strong: #363c48;
  --text: #e7e9ee;
  --muted: #98a1b2;
  --accent: #818cf8;
  --accent-hover: #a5b4fc;
  --accent-weak: rgba(129, 140, 248, .14);
  --danger: #f87171;
  --warn: #fbbf24;
  --success: #4ade80;
  --hover: #20242d;
  --canvas: #111318;
  --grid-minor: #181b21;
  --grid-major: #21252e;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 28px rgba(0, 0, 0, .45);
  --dv-device: #1c2029;
  --dv-device-stroke: #353b47;
  --dv-text: #d3d7df;
  --dv-accent: #818cf8;
  --brand-ink: #eceff5;
  --brand-accent: #ec4899;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; }
body { font: 13px/1.4 var(--font); color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; color: inherit; }
.icon { display: block; flex: none; }
[hidden] { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

/* Layout --------------------------------------------------------------- */
#app {
  display: grid;
  height: 100vh;
  grid-template-rows: 52px minmax(0, 1fr) 26px;
  grid-template-columns: 268px minmax(0, 1fr) 332px;
  grid-template-areas: "top top top" "lib canvas insp" "status status status";
}
#app.no-lib { grid-template-columns: 0 minmax(0, 1fr) 332px; }
#app.no-insp { grid-template-columns: 268px minmax(0, 1fr) 0; }
#app.no-lib.no-insp { grid-template-columns: 0 minmax(0, 1fr) 0; }
#app.no-lib #library, #app.no-insp #inspector { display: none; }

/* Toolbar -------------------------------------------------------------- */
#toolbar {
  grid-area: top;
  display: flex; align-items: center; gap: 6px;
  padding: 0 10px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: none;
}
.brand { display: flex; align-items: center; padding: 0 12px 0 4px; flex: none; }
.brand-lockup svg, .login-brand svg { display: block; width: auto; }
.brand-lockup svg { height: 30px; }
.tb-group { display: flex; align-items: center; gap: 2px; padding: 0 6px; border-left: 1px solid var(--border); flex: none; }
.tb-group:first-of-type { border-left: 0; }
.tb-spacer { flex: 1; }
.tb-btn {
  display: inline-flex; align-items: center; gap: 6px;
  height: 34px; min-width: 34px; padding: 0 8px;
  border: 0; border-radius: 8px; background: transparent; cursor: pointer;
  color: var(--text); justify-content: center;
}
.tb-btn.labeled { padding: 0 11px 0 9px; font-weight: 500; }
.tb-btn:hover:not(:disabled) { background: var(--hover); }
.tb-btn:disabled { opacity: .35; cursor: default; }
.tb-btn.active { background: var(--accent-weak); color: var(--accent); }
.seg { background: var(--panel-2); border-radius: 10px; padding: 2px; margin: 0 6px; border: 1px solid var(--border); }
.seg .tb-btn { height: 28px; min-width: 32px; border-radius: 7px; }
.seg .tb-btn.active { background: var(--panel); color: var(--accent); box-shadow: 0 1px 2px rgba(0,0,0,.12); }

/* Buttons & inputs ----------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 32px; padding: 0 14px;
  border: 1px solid var(--border-strong); border-radius: 8px;
  background: var(--panel); cursor: pointer; font-weight: 500;
  transition: background .12s, border-color .12s;
}
.btn:hover:not(:disabled) { background: var(--hover); }
.btn:disabled { opacity: .4; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
:root[data-theme="dark"] .btn.primary { color: #0e1014; }
.btn.primary:hover { background: var(--accent-hover); }
.btn.danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, transparent); }
.btn.small { height: 26px; padding: 0 9px; font-size: 12px; }
.btn.ghost { border-color: transparent; color: var(--muted); }
.btn.block { width: 100%; margin-top: 10px; }
.btn.icon-only { width: 100%; height: 36px; padding: 0; }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border: 0; border-radius: 7px;
  background: transparent; color: var(--muted); cursor: pointer; flex: none;
}
.icon-btn:hover { background: var(--hover); color: var(--text); }
.icon-btn.danger:hover { color: var(--danger); }
.icon-btn.small { width: 24px; height: 24px; }

input[type="text"], input[type="number"], input[type="search"], input[type="password"], select, textarea {
  width: 100%; height: 32px; padding: 0 9px;
  border: 1px solid var(--border-strong); border-radius: 7px;
  background: var(--panel); outline: none;
  transition: border-color .12s, box-shadow .12s;
}
textarea { height: auto; padding: 7px 9px; resize: vertical; }
select { padding-right: 4px; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-weak); }
input::placeholder, textarea::placeholder { color: var(--muted); opacity: .7; }

/* Library -------------------------------------------------------------- */
#library {
  grid-area: lib; display: flex; flex-direction: column; min-height: 0;
  background: var(--panel); border-right: 1px solid var(--border);
}
.panel-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 14px 8px; }
.panel-head h2 { margin: 0; font-size: 14px; font-weight: 650; }
.lib-search { position: relative; padding: 0 12px 8px; }
.lib-search-icon { position: absolute; left: 22px; top: 8px; color: var(--muted); pointer-events: none; }
.lib-search-icon .icon { width: 16px; height: 16px; }
.lib-search input { padding-left: 32px; }
#lib-list { flex: 1; overflow-y: auto; padding: 2px 8px 12px; }
.lib-cat {
  display: flex; align-items: center; gap: 6px; width: 100%;
  margin-top: 6px; padding: 6px 6px; border: 0; background: none; cursor: pointer;
  font-size: 11px; font-weight: 650; text-transform: uppercase; letter-spacing: .05em; color: var(--muted);
  border-radius: 6px;
}
.lib-cat:hover { background: var(--hover); }
.lib-chev { transition: transform .15s; }
.lib-cat.collapsed .lib-chev { transform: rotate(-90deg); }
.lib-count { margin-left: auto; font-weight: 500; opacity: .7; }
.lib-item {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 8px; margin: 1px 0; border-radius: 8px; cursor: grab;
  border: 1px solid transparent; user-select: none;
}
.lib-item:hover { background: var(--hover); border-color: var(--border); }
.lib-item:active { cursor: grabbing; }
.lib-chip { width: 26px; height: 20px; border-radius: 5px; flex: none; position: relative; }
.lib-chip::after { content: ""; position: absolute; left: 4px; right: 4px; bottom: 4px; height: 3px; border-radius: 2px; background: rgba(255,255,255,.55); }
.lib-text { min-width: 0; flex: 1; }
.lib-name { font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lib-sub { font-size: 11px; color: var(--muted); }
.lib-del { opacity: 0; }
.lib-item:hover .lib-del { opacity: 1; }
.lib-empty { padding: 8px 10px; font-size: 12px; color: var(--muted); }
.lib-foot { padding: 8px 14px; font-size: 11.5px; color: var(--muted); border-top: 1px solid var(--border); }

/* Canvas --------------------------------------------------------------- */
#canvas-wrap { grid-area: canvas; position: relative; min-width: 0; min-height: 0; background: var(--canvas); overflow: hidden; }
#canvas { display: block; width: 100%; height: 100%; user-select: none; -webkit-user-select: none; touch-action: none; cursor: default; }
.grid-minor-line { stroke: var(--grid-minor); stroke-width: 1; }
.grid-major-line { stroke: var(--grid-major); stroke-width: 1; }
#canvas.panning, #canvas.space { cursor: grab; }
#canvas.panning:active { cursor: grabbing; }
#canvas.moving, #canvas.moving * { cursor: grabbing !important; }
#canvas.wiring, #canvas.wiring * { cursor: crosshair !important; }
.device { cursor: move; }
.port { cursor: crosshair; }
.port:hover .port-hit { fill: color-mix(in srgb, var(--accent) 22%, transparent); }
.cable, .tag { cursor: pointer; }
.area-rect { pointer-events: none; }
.area-title { cursor: move; }
.area-handle { cursor: nwse-resize; }
.device.flash .device-outline { animation: flash 1s ease-out 2; }
@keyframes flash { 0% { stroke: var(--dv-accent); stroke-width: 6; } 100% { stroke-width: 1; } }

#canvas.wiring .port.t-no { opacity: .3; }
#canvas.wiring .port.t-good .port-hit { fill: rgba(34, 197, 94, .28); }
#canvas.wiring .port.t-ok .port-hit { fill: rgba(234, 179, 8, .28); }
#canvas.wiring .port.t-hot .port-hit { fill: color-mix(in srgb, var(--accent) 45%, transparent); stroke: var(--accent); stroke-width: 2; r: 10; }
#canvas.wiring .port.t-src .port-hit { fill: color-mix(in srgb, var(--accent) 30%, transparent); }
.temp-wire { fill: none; stroke-width: 2.5; stroke-dasharray: 6 5; stroke-linecap: round; pointer-events: none; animation: dash .6s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -11; } }
.marquee { fill: color-mix(in srgb, var(--accent) 8%, transparent); stroke: var(--accent); stroke-dasharray: 4 3; }

#empty-state { position: absolute; inset: 0; display: grid; place-items: center; pointer-events: none; }
.empty-card {
  pointer-events: auto; max-width: 400px; text-align: center; padding: 28px 30px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow);
}
.empty-icon { display: inline-grid; place-items: center; width: 64px; height: 64px; border-radius: 16px; background: var(--accent-weak); color: var(--accent); margin-bottom: 8px; }
.empty-card h3 { margin: 6px 0; font-size: 18px; }
.empty-card p { margin: 0 0 18px; color: var(--muted); }
.empty-actions { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }

#zoom-controls {
  position: absolute; right: 14px; bottom: 14px; display: flex; align-items: center;
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow); padding: 3px;
}
.zc-btn { height: 30px; min-width: 30px; border: 0; border-radius: 7px; background: transparent; cursor: pointer; display: grid; place-items: center; color: var(--text); }
.zc-btn:hover { background: var(--hover); }
.zc-label { min-width: 52px; font-variant-numeric: tabular-nums; font-size: 12px; }

/* Inspector ------------------------------------------------------------ */
#inspector { grid-area: insp; min-height: 0; background: var(--panel); border-left: 1px solid var(--border); }
#insp { height: 100%; overflow-y: auto; padding-bottom: 24px; }
.insp-head { display: flex; align-items: center; gap: 10px; padding: 14px 12px 12px 14px; border-bottom: 1px solid var(--border); position: sticky; top: 0; background: var(--panel); z-index: 2; }
.insp-chip { width: 12px; height: 34px; border-radius: 4px; flex: none; }
.insp-title { min-width: 0; flex: 1; }
.insp-kind { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.insp-name { font-weight: 650; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.insp-actions { display: flex; gap: 2px; }
.insp-section { padding: 12px 14px; border-bottom: 1px solid var(--border); }
.insp-section h4 { margin: 0 0 10px; font-size: 11px; font-weight: 650; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.insp-section h4 .count { font-weight: 600; background: var(--hover); border-radius: 10px; padding: 0 7px; letter-spacing: 0; }
.insp-help { margin: 0 0 10px; font-size: 12px; color: var(--muted); }
.field { display: block; margin-bottom: 10px; }
.field:last-child { margin-bottom: 0; }
.field-label { display: block; font-size: 12px; font-weight: 500; margin-bottom: 4px; }
.field-hint { display: block; margin-top: 4px; font-size: 11.5px; color: var(--muted); }
.field-row { display: flex; gap: 8px; }
.field-row > .field { flex: 1; min-width: 0; }
.tips { margin: 0; padding-left: 18px; color: var(--muted); font-size: 12px; }
.tips li { margin-bottom: 4px; }

.toggle { display: flex; align-items: center; gap: 10px; margin: 0 0 9px; cursor: pointer; font-size: 12.5px; }
.toggle input { position: absolute; opacity: 0; pointer-events: none; }
.toggle-track { width: 30px; height: 18px; border-radius: 9px; background: var(--border-strong); position: relative; flex: none; transition: background .15s; }
.toggle-track::after { content: ""; position: absolute; left: 2px; top: 2px; width: 14px; height: 14px; border-radius: 50%; background: #fff; transition: transform .15s; box-shadow: 0 1px 2px rgba(0,0,0,.25); }
.toggle input:checked + .toggle-track { background: var(--accent); }
.toggle input:checked + .toggle-track::after { transform: translateX(12px); }
.toggle input:focus-visible + .toggle-track { box-shadow: 0 0 0 3px var(--accent-weak); }

.segmented { display: flex; background: var(--panel-2); border: 1px solid var(--border); border-radius: 9px; padding: 2px; gap: 2px; }
.segmented button { flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 5px; height: 28px; border: 0; border-radius: 7px; background: transparent; cursor: pointer; font-size: 12px; font-weight: 500; color: var(--muted); white-space: nowrap; padding: 0 6px; }
.segmented button:hover { color: var(--text); }
.segmented button.active { background: var(--panel); color: var(--accent); box-shadow: 0 1px 2px rgba(0,0,0,.12); }

.swatches { display: flex; flex-wrap: wrap; gap: 6px; }
.swatch { width: 22px; height: 22px; border-radius: 50%; border: 0; padding: 0; cursor: pointer; background: var(--c); box-shadow: inset 0 0 0 1px rgba(0,0,0,.12); position: relative; }
.swatch:hover { transform: scale(1.12); }
.swatch.active { box-shadow: 0 0 0 2px var(--panel), 0 0 0 4px var(--accent); }
.swatch.auto { font-size: 10px; font-weight: 700; color: #fff; background: linear-gradient(135deg, var(--c) 50%, color-mix(in srgb, var(--c) 60%, #000) 50%); }
.swatch.custom-wrap { background: conic-gradient(red, yellow, lime, cyan, blue, magenta, red); overflow: hidden; display: inline-block; }
.swatch-custom { opacity: 0; width: 100%; height: 100%; cursor: pointer; border: 0; padding: 0; }
.ctx-swatches { padding: 6px 10px 8px; max-width: 220px; }

.chip-toggles { display: flex; flex-wrap: wrap; gap: 6px; }
.chip-toggle { display: inline-flex; align-items: center; gap: 6px; height: 26px; padding: 0 10px 0 8px; border: 1px solid var(--border-strong); border-radius: 13px; background: var(--panel); cursor: pointer; font-size: 12px; color: var(--muted); }
.chip-toggle .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--c); }
.chip-toggle.active { border-color: var(--c); background: color-mix(in srgb, var(--c) 14%, var(--panel)); color: var(--text); font-weight: 600; }

.signal-list { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 10px; }
.signal-row { display: flex; align-items: center; gap: 8px; font-size: 12.5px; min-width: 0; }
.color-dot { width: 18px; height: 18px; border-radius: 5px; flex: none; position: relative; overflow: hidden; cursor: pointer; box-shadow: inset 0 0 0 1px rgba(0,0,0,.12); }
.color-dot input { position: absolute; inset: -4px; opacity: 0; cursor: pointer; width: 30px; height: 30px; }
.signal-name { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.signal-count { color: var(--muted); font-size: 11px; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.stats.wide { grid-template-columns: repeat(4, 1fr); margin-bottom: 14px; }
.stat { background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px; padding: 8px 10px; }
.stat-v { font-size: 17px; font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }
.stat-l { font-size: 11px; color: var(--muted); }

.ports-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.ports-head h4 { margin: 0; }
.ports-add { display: flex; gap: 4px; }
.port-list { display: flex; flex-direction: column; gap: 4px; }
.port-row { display: flex; align-items: center; gap: 5px; }
.port-row .port-name { flex: 1.3; min-width: 0; height: 28px; }
.port-row .port-signal { flex: 1; min-width: 0; height: 28px; font-size: 12px; }
.port-dot { width: 10px; height: 10px; flex: none; background: var(--c); }
.port-dot.in { clip-path: polygon(0 0, 100% 50%, 0 100%); }
.port-dot.out { clip-path: polygon(0 0, 100% 50%, 0 100%); transform: scaleX(-1) rotate(180deg); }
.port-dot.io { clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%); }
.port-linked { width: 14px; flex: none; color: var(--success); display: grid; place-items: center; }

.ends { display: flex; align-items: stretch; gap: 4px; }
.ends-arrow { display: grid; place-items: center; color: var(--muted); }
.end-card { flex: 1; min-width: 0; background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px; padding: 8px; }
.end-label { font-size: 10.5px; font-weight: 650; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.end-link { display: block; width: 100%; text-align: left; border: 0; background: none; padding: 2px 0 6px; cursor: pointer; }
.end-link:hover .end-dev { color: var(--accent); text-decoration: underline; }
.end-dev { display: block; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.end-port { display: block; font-size: 12px; color: var(--muted); }
.end-conn { display: flex; align-items: center; gap: 4px; color: var(--muted); }
.end-conn .conn-input { height: 24px; font-size: 11.5px; padding: 0 6px; }
.btn-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }

/* Status bar ----------------------------------------------------------- */
#statusbar {
  grid-area: status; display: flex; align-items: center; gap: 16px;
  padding: 0 12px; font-size: 11.5px; color: var(--muted);
  background: var(--panel); border-top: 1px solid var(--border); white-space: nowrap; overflow: hidden;
}
#status-hint { flex: 1; text-align: center; overflow: hidden; text-overflow: ellipsis; }
#status-file { max-width: 40%; overflow: hidden; text-overflow: ellipsis; direction: rtl; text-align: left; }

/* Context menu --------------------------------------------------------- */
.ctx-menu {
  position: fixed; z-index: 1000; min-width: 200px; padding: 5px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow);
  animation: pop .1s ease-out;
}
@keyframes pop { from { opacity: 0; transform: scale(.97); } }
.ctx-item { display: flex; align-items: center; gap: 8px; width: 100%; height: 30px; padding: 0 10px 0 6px; border: 0; border-radius: 6px; background: none; cursor: pointer; text-align: left; }
.ctx-item:hover:not(:disabled) { background: var(--hover); }
.ctx-item:disabled { opacity: .4; cursor: default; }
.ctx-item.danger { color: var(--danger); }
.ctx-item.checked .ctx-icon { color: var(--accent); }
.ctx-icon { width: 18px; display: grid; place-items: center; color: var(--muted); }
.ctx-item.danger .ctx-icon { color: inherit; }
.ctx-label { flex: 1; }
.ctx-kbd { font-size: 11px; color: var(--muted); }
.ctx-sep { height: 1px; background: var(--border); margin: 4px 2px; }
.ctx-header { padding: 6px 10px 4px; font-size: 11px; font-weight: 650; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 260px; }

/* Modal ---------------------------------------------------------------- */
.modal-overlay { position: fixed; inset: 0; z-index: 900; display: flex; align-items: center; justify-content: center; background: rgba(15, 18, 25, .45); backdrop-filter: blur(2px); animation: fade .12s ease-out; padding: 20px; }
@keyframes fade { from { opacity: 0; } }
.modal { max-width: 100%; max-height: calc(100vh - 40px); display: flex; flex-direction: column; background: var(--panel); border: 1px solid var(--border); border-radius: 14px; box-shadow: 0 24px 64px rgba(0,0,0,.3); animation: pop .14s ease-out; }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 14px 10px 20px; }
.modal-head h3 { margin: 0; font-size: 16px; }
.modal-body { padding: 4px 20px 16px; overflow-y: auto; min-height: 0; }
.modal-foot { display: flex; gap: 8px; justify-content: flex-end; padding: 12px 20px 16px; border-top: 1px solid var(--border); }
.modal-foot .btn.left { margin-right: auto; }
.modal-text { margin: 0 0 8px; }
.form .field { margin-bottom: 14px; }
.help-table { width: 100%; border-collapse: collapse; margin-bottom: 12px; }
.help-table td { padding: 6px 0; border-bottom: 1px solid var(--border); }
.help-table td:last-child { text-align: right; }
kbd { font: 11.5px var(--font); background: var(--panel-2); border: 1px solid var(--border); border-radius: 5px; padding: 2px 6px; color: var(--muted); }

/* Cable schedule --------------------------------------------------------- */
.sched-tabs { margin-bottom: 12px; max-width: 360px; }
.sched-bar { display: flex; align-items: center; gap: 14px; margin-bottom: 10px; flex-wrap: wrap; }
.sched-search { max-width: 260px; }
.table-wrap { max-height: 56vh; overflow: auto; border: 1px solid var(--border); border-radius: 10px; }
.sched-table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.sched-table th { position: sticky; top: 0; background: var(--panel-2); text-align: left; font-size: 11px; font-weight: 650; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); padding: 8px; border-bottom: 1px solid var(--border); z-index: 1; }
.sched-table td { padding: 4px 8px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.sched-table tr:last-child td { border-bottom: 0; }
.sched-table tbody tr:hover td { background: var(--hover); }
.sched-table.compact td { padding: 7px 8px; }
.sched-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.sched-id { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; white-space: nowrap; }
.sched-id::before { content: ""; width: 10px; height: 10px; border-radius: 3px; background: var(--c); flex: none; }
.cell-input { height: 28px !important; border-color: transparent !important; background: transparent !important; padding: 0 6px !important; }
.cell-input:hover { border-color: var(--border-strong) !important; }
.cell-input:focus { border-color: var(--accent) !important; background: var(--panel) !important; }
.cell-input.num { width: 80px; text-align: right; }
.cell-input.missing { background: color-mix(in srgb, var(--warn) 10%, transparent) !important; }
.cell-end b { display: block; font-weight: 600; white-space: nowrap; }
.cell-end span { font-size: 11.5px; color: var(--muted); white-space: nowrap; }
.sched-empty { padding: 40px; text-align: center; color: var(--muted); }
.totals-grid { display: grid; grid-template-columns: 1.7fr 1fr; gap: 20px; }
.totals-grid h4 { margin: 0 0 8px; font-size: 11px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.totals-grid table { border: 1px solid var(--border); border-radius: 10px; border-collapse: separate; border-spacing: 0; overflow: hidden; }
.breakdown { font-size: 12px; }
.inline-field { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; }
.inline-field input, .inline-field select { width: 80px; height: 28px; }
.warn-pill { background: color-mix(in srgb, var(--warn) 14%, transparent); color: var(--warn); border-radius: 12px; padding: 3px 10px; font-size: 12px; font-weight: 600; }

/* Toasts --------------------------------------------------------------- */
#toasts { position: fixed; left: 50%; bottom: 44px; transform: translateX(-50%); z-index: 1100; display: flex; flex-direction: column; align-items: center; gap: 6px; pointer-events: none; }
.toast { padding: 9px 16px; border-radius: 10px; background: #1f2430; color: #fff; font-weight: 500; box-shadow: var(--shadow); opacity: 0; transform: translateY(8px); transition: opacity .2s, transform .2s; max-width: 520px; text-align: center; }
.toast.show { opacity: 1; transform: none; }
.toast.success { background: #166534; }
.toast.warn { background: #92400e; }
.toast.error { background: #991b1b; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 10px; border: 2px solid var(--panel); }
::-webkit-scrollbar-track { background: transparent; }
.lib-section {
  margin: 12px 4px 4px; padding-top: 10px; border-top: 1px solid var(--border);
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--muted);
}
.lib-more {
  display: block; width: 100%; margin: 2px 0 6px; padding: 6px 10px; text-align: left;
  font: inherit; font-size: 12px; color: var(--accent, #3b82f6); background: none; border: 0; border-radius: 6px; cursor: pointer;
}
.lib-more:hover { background: var(--hover); }
.device-handle { cursor: ew-resize; transition: opacity .1s; }
.device:hover .device-handle, .device.selected .device-handle { opacity: .6; }
.device-handle:hover { opacity: 1 !important; }

/* ---- Web version: sign-in, diagrams, sharing, users ---- */
.login-screen { position: fixed; inset: 0; z-index: 950; display: flex; align-items: center; justify-content: center; padding: 16px; background: var(--bg, #f5f6f8); }
.login-card { width: 340px; max-width: 100%; padding: 28px 26px 20px; background: var(--panel); border: 1px solid var(--border); border-radius: 16px; box-shadow: 0 24px 64px rgba(0,0,0,.18); }
.login-brand { display: flex; justify-content: center; margin: 4px 0 22px; }
.login-brand svg { height: 46px; max-width: 100%; }
.login-msg { margin: 0 0 14px; color: var(--muted); }
.login-error { margin: 4px 0 2px; padding: 8px 10px; border-radius: 8px; font-size: 12.5px; color: var(--danger); background: color-mix(in srgb, var(--danger) 10%, transparent); }
.login-foot { margin: 14px 0 0; font-size: 12px; color: var(--muted); text-align: center; }
.ro-badge { display: inline-flex; align-items: center; gap: 5px; height: 26px; padding: 0 10px; margin-right: 4px; border-radius: 13px; font-size: 12px; font-weight: 600; color: var(--accent); background: var(--accent-weak); }
.ro-badge[hidden] { display: none; }
.tb-btn[hidden] { display: none; }
.tb-btn.labeled svg { margin-right: 5px; }
#app.readonly [data-cmd="save"], #app.readonly [data-cmd="undo"], #app.readonly [data-cmd="redo"],
#app.readonly [data-cmd="newDevice"], #app.readonly [data-cmd="addZone"], #app.readonly #route-style,
#app.readonly [data-cmd="toggleSnap"], #app.readonly [data-cmd="toggleLibrary"], #app.readonly .device-handle { display: none; }
.dg-actions { display: flex; gap: 8px; margin-bottom: 6px; }
.dg-actions .btn span { display: inline-flex; margin-right: 6px; }
.dg-list h4, .modal-body > div > h4 { margin: 16px 0 6px; font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.dg-row { display: flex; align-items: center; gap: 4px; border-radius: 8px; }
.dg-row:hover { background: var(--hover); }
.dg-open { flex: 1; min-width: 0; display: flex; align-items: baseline; gap: 10px; padding: 8px 10px; text-align: left; font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
.dg-name { flex: 1; min-width: 0; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dg-meta { font-size: 12px; color: var(--muted); white-space: nowrap; }
.dg-empty { margin: 6px 0; color: var(--muted); font-size: 13px; }
.share-section { padding: 12px 0; border-top: 1px solid var(--border); }
.share-section:first-child { border-top: 0; padding-top: 4px; }
.share-head { display: flex; align-items: flex-start; gap: 10px; }
.share-head > span { margin-top: 2px; color: var(--accent); }
.share-head > div { flex: 1; }
.share-link { display: flex; align-items: center; gap: 6px; margin-top: 8px; }
.link-box { flex: 1; display: flex; gap: 6px; }
.link-box input { flex: 1; font-size: 12px; }
.cred-box { margin: 8px 0 12px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; display: grid; gap: 6px; }
.cred-box div { display: flex; gap: 10px; }
.cred-box span { width: 80px; color: var(--muted); }
.cred-box code { font-size: 13.5px; user-select: all; }
.user-list { display: grid; gap: 2px; }
.user-row { display: flex; align-items: center; gap: 8px; padding: 6px 4px 6px 8px; border-radius: 8px; }
.user-row:hover { background: var(--hover); }
.user-row .dg-meta { margin-left: auto; }
.pill { font-size: 11px; padding: 1px 7px; border-radius: 9px; background: var(--accent-weak); color: var(--accent); font-weight: 600; }
.check { display: flex; align-items: center; gap: 6px; margin: 2px 0 12px; font-size: 13px; }

/* ---- Focus views (double-click a cable, device or tag) ---- */
.focus-dim { opacity: .1; pointer-events: none; transition: opacity .15s; }
.device.focus-hl .device-outline { stroke: var(--accent); stroke-width: 3; }
.port.focus-port .port-hit { fill: var(--accent); fill-opacity: .25; stroke: var(--accent); stroke-width: 2; }
.port.focus-port .port-label { font-weight: 700; fill: var(--accent); }
.tag.focus-hot .tag-pill { stroke: var(--accent); stroke-width: 3; animation: focus-pulse 1.2s ease-in-out 3; }
@keyframes focus-pulse { 50% { stroke-width: 7; stroke-opacity: .5; } }
#focus-bar {
  position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%); z-index: 5;
  display: flex; align-items: center; gap: 10px; max-width: calc(100% - 140px);
  padding: 8px 8px 8px 14px; border-radius: 14px; font-size: 13px; white-space: nowrap;
  background: var(--panel); border: 1px solid var(--border); box-shadow: 0 10px 30px rgba(0,0,0,.25);
}
#focus-bar[hidden] { display: none; }
.fb-num { padding: 2px 8px; border-radius: 8px; font-weight: 700; font-size: 12px; }
.fb-end { display: inline-flex; align-items: center; gap: 6px; padding: 4px 8px; border: 1px solid var(--border); border-radius: 9px; background: none; font: inherit; color: inherit; cursor: pointer; min-width: 0; }
.fb-end:hover { background: var(--hover); border-color: var(--accent); }
.fb-end span:last-child { color: var(--muted); }
.fb-chip { width: 10px; height: 10px; border-radius: 3px; flex: none; }
.fb-chip.big { width: 14px; height: 14px; border-radius: 4px; }
.fb-arrow { display: inline-flex; color: var(--muted); }
.fb-meta { color: var(--muted); overflow: hidden; text-overflow: ellipsis; }
.fb-hint { color: var(--muted); font-size: 12px; padding-left: 10px; border-left: 1px solid var(--border); }
@media (max-width: 900px) { .fb-hint { display: none; } }
.cable-spec { margin-top: 10px; padding: 8px 10px; border-radius: 8px; background: var(--hover); display: grid; gap: 4px; font-size: 12px; }
.cable-spec div { display: flex; justify-content: space-between; gap: 8px; }
.cable-spec span { color: var(--muted); }
.cable-spec .spec-warn span, .cable-spec .spec-warn b { color: var(--warn, #d97706); }

/* ---- Live collaboration ---- */
.peer-avatars { display: flex; align-items: center; margin-right: 6px; }
.peer-avatar {
  width: 28px; height: 28px; margin-left: -6px; border-radius: 50%; border: 2px solid var(--panel);
  background: var(--c); color: #fff; font: 700 11px/1 system-ui, sans-serif; cursor: pointer; padding: 0;
}
.peer-avatar:first-child { margin-left: 0; }
.peer-avatar.viewing { background: var(--panel); color: var(--c); box-shadow: inset 0 0 0 2px var(--c); }
.peer-avatar:hover { transform: translateY(-1px); z-index: 1; }
.peer-box { fill: none; stroke-width: 2.5; stroke-dasharray: 7 4; pointer-events: none; }
.peer-flag { pointer-events: none; }
.peer-flag text { font: 600 10.5px system-ui, sans-serif; fill: #fff; }
.cable.peer-sel .cable-path { stroke: var(--peer); }
.cable.peer-sel .cable-glow { stroke: var(--peer); stroke-opacity: .35; stroke-width: 10; }
.tag.peer-sel .tag-pill { stroke: var(--peer); stroke-width: 3; }

/* ---- Touch & small screens. The desktop layout above is unchanged. ---- */
#sheet-pill, .sheet-handle, #add-fab, .tb-menu, .lib-close, #lock-btn { display: none; }
@media (pointer: coarse) { #lock-btn { display: flex; } #lock-btn.active { color: var(--accent); } #app.readonly #lock-btn { display: none; } }
#canvas { -webkit-touch-callout: none; }

/* Landscape tablets: the equipment library slides in over the canvas (toolbar library button). */
@media (pointer: coarse) and (min-width: 761px) and (min-height: 501px) {
  #app, #app.no-lib { grid-template-columns: 0 minmax(0, 1fr) 332px; }
  #app.no-insp, #app.no-lib.no-insp { grid-template-columns: 0 minmax(0, 1fr) 0; }
  #app #library, #app.no-lib #library {
    display: flex; position: fixed; top: 52px; bottom: 26px; left: 0; width: 300px; z-index: 40;
    transform: translateX(-105%); transition: transform .2s ease; box-shadow: var(--shadow);
  }
  #app.lib-open #library { transform: none; }
  .tb-btn { min-width: 40px; height: 40px; }
  .lib-close { display: inline-flex; margin-left: 4px; }
}

/* Phones: view first. No library; the inspector is a sheet opened from the pill. */
@media (max-width: 760px), (pointer: coarse) and (max-height: 500px) {
  #app, #app.no-lib, #app.no-insp, #app.no-lib.no-insp {
    grid-template-columns: 0 minmax(0, 1fr) 0;
    grid-template-rows: 50px minmax(0, 1fr) 0;
  }
  #library, #statusbar { display: none !important; }
  /* Header: logo, who's here, and a menu with everything else. */
  #toolbar { gap: 0; padding: 0 4px 0 10px; overflow: visible; }
  #toolbar > .tb-group { display: none; }
  #toolbar > .tb-group.tb-presence, #toolbar > .tb-group.tb-menu { display: flex; padding: 0 2px; border-left: 0; }
  .tb-presence [data-cmd="share"], .tb-presence [data-cmd="account"] { display: none; }
  .brand { padding: 0; min-width: 0; flex: 0 1 auto; }
  .brand-lockup svg { height: 22px; max-width: 100%; }
  #toolbar .tb-btn { min-width: 42px; height: 42px; }
  .ro-badge { font-size: 0; gap: 0; padding: 0 7px; }

  /* + opens the equipment library full screen; picking something closes it. */
  #add-fab {
    display: flex; align-items: center; justify-content: center; position: absolute; left: 14px; bottom: 14px; z-index: 6;
    width: 50px; height: 50px; border-radius: 50%; border: 0; cursor: pointer;
    background: var(--accent); color: #fff; box-shadow: var(--shadow);
  }
  :root[data-theme="dark"] #add-fab { color: #0e1014; }
  #add-fab .icon { width: 24px; height: 24px; }
  #app.readonly #add-fab { display: none; }
  #app.lib-open #library { display: flex !important; position: fixed; inset: 0; z-index: 80; }
  .lib-close { display: inline-flex; margin-left: 4px; }
  .lib-item { padding-top: 10px; padding-bottom: 10px; }
  #library .panel-head h2 { flex: 1; }
  .peer-avatar { width: 26px; height: 26px; }
  #empty-state .empty-actions { display: none; }

  #inspector, #app.no-insp #inspector {
    display: flex !important; flex-direction: column; position: fixed; left: 0; right: 0; bottom: 0; height: 62vh; z-index: 60;
    border-left: 0; border-top: 1px solid var(--border); border-radius: 16px 16px 0 0;
    box-shadow: 0 -12px 40px rgba(0, 0, 0, .35); transform: translateY(105%); transition: transform .22s ease;
  }
  #app.sheet-open #inspector { transform: none; }
  #insp { flex: 1; height: auto; min-height: 0; }
  .sheet-handle {
    display: block; flex: none; width: 100%; height: 30px; border: 0; background: none; cursor: grab; position: relative; touch-action: none;
  }
  .sheet-handle::after {
    content: ''; position: absolute; left: 50%; top: 11px; width: 44px; height: 5px; margin-left: -22px;
    border-radius: 3px; background: var(--border-strong);
  }
  #sheet-pill {
    display: flex; align-items: center; gap: 7px; position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%);
    max-width: calc(100% - 160px); padding: 9px 16px; border-radius: 22px; z-index: 6;
    background: var(--panel); color: var(--text); border: 1px solid var(--border); box-shadow: var(--shadow);
    font: 600 13px var(--font); white-space: nowrap; cursor: pointer;
  }
  #sheet-pill span { overflow: hidden; text-overflow: ellipsis; }
  #app.sheet-open #sheet-pill { display: none; }
  #zoom-controls { right: 10px; bottom: 12px; }
  #zoom-controls .zc-label, #zoom-controls [data-cmd="zoomIn"], #zoom-controls [data-cmd="zoomOut"] { display: none; } /* pinch instead */
  #zoom-controls .zc-btn { width: 40px; height: 40px; }
  #focus-bar { top: 10px; bottom: auto; max-width: calc(100% - 20px); flex-wrap: wrap; white-space: normal; row-gap: 6px; }
  .fb-hint { display: none; }
}

/* ---- Edit with AI ---- */
.ai-btn svg { color: var(--accent); }
#ai-panel {
  position: fixed; top: 52px; right: 0; bottom: 26px; width: 380px; z-index: 45;
  display: flex; flex-direction: column; background: var(--panel); border-left: 1px solid var(--border); box-shadow: var(--shadow);
}
#ai-panel[hidden] { display: none; }
.ai-head { display: flex; align-items: center; gap: 2px; padding: 10px 8px 10px 14px; border-bottom: 1px solid var(--border); }
.ai-title { display: flex; align-items: center; gap: 8px; font-weight: 650; font-size: 14px; flex: 1; }
.ai-title svg { color: var(--accent); }
.ai-list { flex: 1; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.ai-msg { max-width: 92%; padding: 9px 12px; border-radius: 12px; line-height: 1.45; font-size: 13px; white-space: pre-wrap; }
.ai-msg p { margin: 0; }
.ai-user { align-self: flex-end; background: var(--accent); color: #fff; border-bottom-right-radius: 4px; }
:root[data-theme="dark"] .ai-user { color: #0e1014; }
.ai-bot { align-self: flex-start; background: var(--panel-2); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.ai-error { border-color: color-mix(in srgb, var(--danger) 50%, transparent); color: var(--danger); }
.ai-intro { white-space: normal; display: flex; flex-direction: column; gap: 6px; }
.ai-example { text-align: left; font: inherit; font-size: 12.5px; padding: 6px 9px; border-radius: 8px; border: 1px solid var(--border); background: var(--panel); color: var(--text); cursor: pointer; }
.ai-example:hover { border-color: var(--accent); }
.ai-note { color: var(--muted); font-size: 12px; }
.ai-changes { margin: 8px 0 0; padding-left: 18px; font-size: 12px; color: var(--muted); white-space: normal; }
.ai-actions { display: flex; gap: 6px; margin-top: 8px; }
.ai-pending { display: flex; align-items: center; gap: 8px; color: var(--muted); }
.ai-dots { display: inline-flex; gap: 3px; }
.ai-dots i { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: ai-dot 1s infinite ease-in-out; }
.ai-dots i:nth-child(2) { animation-delay: .15s; } .ai-dots i:nth-child(3) { animation-delay: .3s; }
@keyframes ai-dot { 0%, 80%, 100% { opacity: .25; transform: scale(.8); } 40% { opacity: 1; transform: scale(1); } }
.ai-compose { display: flex; align-items: flex-end; gap: 6px; padding: 10px; border-top: 1px solid var(--border); }
.ai-input { flex: 1; resize: none; min-height: 38px; max-height: 140px; line-height: 1.4; padding: 9px 10px; }
.ai-mic { width: 40px; height: 40px; flex: none; border-radius: 50%; border: 1px solid var(--border); background: var(--panel); color: var(--text); display: flex; align-items: center; justify-content: center; cursor: pointer; }
.ai-mic.on { background: var(--danger); border-color: var(--danger); color: #fff; animation: ai-pulse 1.2s infinite; }
@keyframes ai-pulse { 50% { box-shadow: 0 0 0 6px color-mix(in srgb, var(--danger) 25%, transparent); } }
.ai-send { height: 40px; }
.ver-list { display: grid; gap: 2px; }
.ver-row { display: flex; align-items: center; gap: 10px; padding: 7px 8px; border-radius: 8px; }
.ver-row:hover { background: var(--hover); }
.ver-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.ver-main b { font-weight: 550; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.usage-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.usage-table th, .usage-table td { text-align: right; padding: 5px 6px; border-bottom: 1px solid var(--border); }
.usage-table th:first-child, .usage-table td:first-child { text-align: left; }
@media (max-width: 760px), (pointer: coarse) and (max-height: 500px) {
  #ai-panel { top: 0; bottom: 0; width: 100%; z-index: 85; }
  .ai-msg { font-size: 14px; }
}
.ai-budget { padding: 0 12px 8px; font-size: 11.5px; color: var(--muted); text-align: right; }
.ai-budget.over, .usage-table .over-cap { color: var(--danger); font-weight: 600; }