/* ============================================================
   NEXOGRAPH — Business Graph visualisation component
   Premium node-edge graph: curved "energy" wires with travelling
   light pulses, glowing nodes, a spotlit hub / crown-jewel node.
   Two themes:
     .bg-graph          light blueprint (tiles, light sections)
     .bg-graph.stage    dark dramatic canvas (signature graphs)
   Nodes positioned by --x / --y (0–100 %); edges drawn by graph.js
   as bezier paths into a 0..1000 viewBox (stretched); strokes stay
   crisp via vector-effect:non-scaling-stroke.
   ============================================================ */

.bg-graph {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper-2);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 32px 32px;
  overflow: hidden;
  padding: 4px;
  aspect-ratio: 16 / 11;
  width: 100%;
}
.bg-graph.tall { aspect-ratio: 4 / 5; }
.bg-graph.wide { aspect-ratio: 16 / 8; }
@media (max-width: 620px){ .bg-graph, .bg-graph.wide { aspect-ratio: 3 / 4; } }

/* ---- dark "stage" theme ---- */
.bg-graph.stage {
  border-color: #0d3151;
  background-color: #08243d;
  background-image:
    radial-gradient(70% 60% at 50% 42%, rgba(15,163,209,0.20), transparent 72%),
    radial-gradient(120% 120% at 50% 120%, rgba(6,20,34,0.9), transparent 70%),
    linear-gradient(rgba(116,207,234,0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(116,207,234,0.055) 1px, transparent 1px);
  background-size: auto, auto, 34px 34px, 34px 34px;
  box-shadow: inset 0 0 90px -20px rgba(0,0,0,0.6);
}

.bg-graph .bg-corner {
  position: absolute; z-index: 3; font-family: var(--mono);
  font-size: 0.6rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--sage); top: 13px; left: 15px; pointer-events: none;
}
.bg-graph .bg-corner.tr { left: auto; right: 15px; color: var(--ocher-600); }
.bg-graph.stage .bg-corner { color: rgba(154,172,193,0.75); }
.bg-graph.stage .bg-corner.tr { color: var(--ocher-300); }

/* ---- edges: faint base wire + travelling light spark ---- */
.bg-edges { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }
.bg-edge {
  fill: none; stroke: var(--line-dash); stroke-width: 1.2;
  vector-effect: non-scaling-stroke; opacity: 0;
}
.bg-edge.hot { stroke: var(--ocher); stroke-width: 1.5; }
.bg-edge.warnline { stroke: var(--brick); stroke-width: 1.5; }
[data-graph].g-in .bg-edge { opacity: 0.75; transition: opacity .6s ease; }
[data-graph].g-in .bg-edge.hot, [data-graph].g-in .bg-edge.warnline { opacity: 0.9; }

.bg-spark {
  fill: none; stroke: var(--ocher); stroke-width: 2.2;
  stroke-linecap: round; stroke-dasharray: 0.1 40;
  vector-effect: non-scaling-stroke; opacity: 0;
}
.bg-spark.warnline { stroke: var(--brick); }
[data-graph].g-in .bg-spark {
  opacity: 0.95;
  animation: bg-travel 2.4s linear infinite;
}
@keyframes bg-travel { to { stroke-dashoffset: -40.1; } }

/* stage: brighter, glowing wires */
.stage .bg-edge { stroke: rgba(116,207,234,0.28); }
.stage .bg-edge.hot { stroke: rgba(116,207,234,0.6); }
.stage .bg-edge.warnline { stroke: rgba(232,106,78,0.6); }
.stage .bg-spark { stroke: var(--ocher-300); filter: drop-shadow(0 0 4px rgba(116,207,234,0.9)); }
.stage .bg-spark.warnline { stroke: #F1876B; filter: drop-shadow(0 0 4px rgba(232,106,78,0.9)); }

/* ---- nodes ---- */
.bg-nodes { position: absolute; inset: 0; z-index: 1; }
.bg-node {
  position: absolute;
  left: calc(var(--x) * 1%); top: calc(var(--y) * 1%);
  transform: translate(-50%, -50%) scale(0.6);
  opacity: 0;
  display: inline-flex; align-items: center; gap: 0.55em;
  padding: 0.55em 0.85em;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 7px;
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.02em;
  color: var(--ink); white-space: nowrap; cursor: default;
  box-shadow: 0 2px 10px -6px rgba(12,34,51,0.4);
  transition: border-color .18s ease, background .18s ease, transform .18s ease, box-shadow .18s ease;
}
.bg-node .dot { width: 8px; height: 8px; border-radius: 50%; border: 1.5px solid var(--green); flex: none; position: relative; box-shadow: 0 0 6px rgba(0,120,212,0.35); }
.bg-node small { color: var(--sage); font-size: 0.62rem; letter-spacing: 0.04em; }
.bg-node:hover { border-color: var(--green); box-shadow: 0 12px 26px -14px rgba(12,34,51,0.55); z-index: 4; transform: translate(-50%,-50%) scale(1.05); }

.bg-node.hub {
  background: var(--green-900); border-color: var(--green-900); color: var(--paper);
  padding: 0.75em 1.1em; font-size: 0.82rem; letter-spacing: 0.04em; z-index: 2;
  box-shadow: 0 6px 22px -8px rgba(10,39,66,0.7);
}
.bg-node.hub .dot { border-color: var(--ocher-300); background: var(--ocher); box-shadow: 0 0 10px rgba(15,163,209,0.7); }
.bg-node.hub small { color: var(--sage-300); }
.bg-node.acc { border-color: var(--ocher); box-shadow: 0 0 0 1px rgba(15,163,209,0.12), 0 6px 20px -10px rgba(15,163,209,0.5); }
.bg-node.acc .dot { border-color: var(--ocher); background: var(--ocher); box-shadow: 0 0 10px rgba(15,163,209,0.7); }
.bg-node.warn { border-color: var(--brick); color: var(--brick); box-shadow: 0 0 0 1px rgba(192,73,46,0.12), 0 6px 20px -10px rgba(192,73,46,0.5); }
.bg-node.warn .dot { border-color: var(--brick); background: var(--brick); box-shadow: 0 0 10px rgba(192,73,46,0.7); }

/* stage nodes: glassy + glow */
.stage .bg-node {
  background: rgba(233,242,248,0.06); color: #EAF2F8;
  border-color: rgba(116,207,234,0.32);
  -webkit-backdrop-filter: blur(5px); backdrop-filter: blur(5px);
  box-shadow: 0 6px 22px -10px rgba(0,0,0,0.6);
}
.stage .bg-node small { color: var(--sage-300); }
.stage .bg-node .dot { border-color: var(--ocher-300); background: var(--ocher); box-shadow: 0 0 9px rgba(116,207,234,0.9); }
.stage .bg-node:hover { border-color: var(--ocher-300); box-shadow: 0 0 0 1px rgba(116,207,234,0.4), 0 14px 30px -14px rgba(0,0,0,0.7); }
.stage .bg-node.hub {
  background: linear-gradient(160deg, #12456e, #0a2742);
  border-color: rgba(116,207,234,0.6); color: #fff;
  box-shadow: 0 0 34px -4px rgba(15,163,209,0.65), 0 8px 26px -10px rgba(0,0,0,0.7);
}
.stage .bg-node.hub .dot { box-shadow: 0 0 12px rgba(116,207,234,1); }
.stage .bg-node.acc { border-color: rgba(116,207,234,0.75); box-shadow: 0 0 26px -4px rgba(116,207,234,0.6); }
.stage .bg-node.warn { border-color: rgba(232,106,78,0.75); color: #F3B4A6; box-shadow: 0 0 26px -4px rgba(232,106,78,0.55); }
.stage .bg-node.warn .dot { border-color: #F1876B; background: #E86A4E; box-shadow: 0 0 10px rgba(232,106,78,0.9); }

/* reveal: staggered scale-in + one-time pulse ring */
[data-graph].g-in .bg-node {
  opacity: 1; transform: translate(-50%, -50%) scale(1);
  transition: opacity .55s var(--gease, cubic-bezier(.2,.7,.2,1)), transform .55s var(--gease, cubic-bezier(.2,.7,.2,1));
  transition-delay: calc(var(--d, 0) * 75ms);
}
.bg-node .dot::after {
  content: ""; position: absolute; inset: -3px; border-radius: 50%;
  border: 1.5px solid var(--ocher); opacity: 0; transform: scale(1);
}
.stage .bg-node .dot::after { border-color: var(--ocher-300); }
[data-graph].g-in .bg-node .dot::after {
  animation: bg-pulse 1.5s ease-out 1 both;
  animation-delay: calc(var(--d, 0) * 75ms + 250ms);
}
@keyframes bg-pulse {
  0%   { opacity: 0.9; transform: scale(1); }
  70%  { opacity: 0; transform: scale(3.4); }
  100% { opacity: 0; transform: scale(3.4); }
}
[data-graph].g-in .bg-node.hub .dot::after {
  border-color: var(--ocher-300);
  animation: bg-breathe 3.2s ease-out infinite; animation-delay: 1.2s;
}
.stage .bg-node.hub .dot::after { border-color: var(--ocher-300); }
@keyframes bg-breathe {
  0%   { opacity: 0.7; transform: scale(1); }
  60%  { opacity: 0; transform: scale(3); }
  100% { opacity: 0; transform: scale(3); }
}

@media (prefers-reduced-motion: reduce){
  [data-graph].g-in .bg-spark { animation: none; opacity: 0.6; }
  [data-graph] .bg-edge { opacity: 0.75; }
  [data-graph] .bg-node { opacity: 1; transform: translate(-50%,-50%) scale(1); transition: none; }
  [data-graph] .bg-node .dot::after { animation: none !important; }
}

/* ============================================================
   MEDALLION variant — icon discs with decorative rings.
   Add class "medallions" to .bg-graph; give each node a
   data-icon="funnel|people|doc|alert|box|install|headset|
   refresh|plus|..." . graph.js injects the icon + label.
   ============================================================ */
.bg-graph.medallions .bg-node {
  background: none; border: 0; box-shadow: none; padding: 0;
  width: 60px; height: 60px; border-radius: 50%;
  overflow: visible; backdrop-filter: none; -webkit-backdrop-filter: none;
}
.bg-graph.medallions .bg-node .dot { display: none; }
.bg-graph.medallions.mini .bg-node { width: 38px; height: 38px; }

.bg-mdisc {
  position: absolute; inset: 0; border-radius: 50%;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(158deg, #0d6bb8, #0a4d86);
  box-shadow: 0 10px 22px -10px rgba(10,39,66,0.7), inset 0 1px 0 rgba(255,255,255,0.18);
  z-index: 1;
}
.bg-mdisc svg { width: 55%; height: 55%; display: block; }
/* decorative dashed ring (medallions only) */
.bg-graph.medallions .bg-node::after {
  content: ""; position: absolute; inset: -7px; border-radius: 50%;
  border: 2px dashed rgba(15,163,209,0.45); z-index: 0;
  transition: transform .4s ease, border-color .2s ease;
}
[data-graph].g-in .bg-graph.medallions .bg-node.spin::after,
[data-graph].medallions.g-in .bg-node.spin::after { animation: bg-ringspin 22s linear infinite; }
@keyframes bg-ringspin { to { transform: rotate(360deg); } }
.bg-graph.medallions .bg-node:hover::after { border-color: rgba(15,163,209,0.9); transform: scale(1.08); }

/* label sits below the disc without shifting the anchor */
.bg-mlabel {
  position: absolute; top: calc(100% + 9px); left: 50%; transform: translateX(-50%);
  white-space: nowrap; text-align: center; z-index: 2;
  font-family: var(--sans, 'Space Grotesk', sans-serif); font-weight: 600;
  font-size: 0.92rem; letter-spacing: -0.01em; color: var(--ink); line-height: 1.15;
}
.bg-mlabel small {
  display: block; margin-top: 3px; font-family: var(--mono); font-weight: 400;
  font-size: 0.58rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--sage);
}
/* keep labels inside the frame: flip above / align to the edge near borders */
.bg-graph.medallions .bg-node.lab-up .bg-mlabel { top: auto; bottom: calc(100% + 9px); }
.bg-graph.medallions .bg-node.lab-left .bg-mlabel { left: -8px; transform: none; text-align: left; }
.bg-graph.medallions .bg-node.lab-right .bg-mlabel { left: auto; right: -8px; transform: none; text-align: right; }
.bg-graph.mini .bg-mlabel { font-size: 0.62rem; top: calc(100% + 5px); }
.bg-graph.mini .bg-node.lab-up .bg-mlabel { top: auto; bottom: calc(100% + 5px); }
.bg-graph.mini .bg-mlabel small { display: none; }

/* accent (crown-jewel) medallion */
.bg-graph.medallions .bg-node.acc .bg-mdisc { background: linear-gradient(158deg, #17b0dd, #0d7aa8); box-shadow: 0 12px 26px -10px rgba(15,163,209,0.75), 0 0 0 4px rgba(15,163,209,0.12); }
.bg-graph.medallions .bg-node.acc::after { border-color: rgba(15,163,209,0.85); border-style: dotted; inset: -9px; }
.bg-graph.medallions .bg-node.acc .bg-mlabel small { color: var(--ocher-600); }

/* hub medallion */
.bg-graph.medallions .bg-node.hub .bg-mdisc { background: linear-gradient(158deg, #12456e, #0a2742); box-shadow: 0 0 30px -4px rgba(15,163,209,0.6), 0 10px 24px -10px rgba(0,0,0,0.5); }
.bg-graph.medallions .bg-node.hub .bg-mlabel { font-size: 1rem; }

/* warning medallion: red disc + starburst ring */
.bg-graph.medallions .bg-node.warn .bg-mdisc { background: linear-gradient(158deg, #d4553a, #a83a22); box-shadow: 0 12px 26px -10px rgba(192,73,46,0.7); }
.bg-graph.medallions .bg-node.warn::after {
  border: 0; inset: -12px; background: var(--brick); opacity: 0.9;
  clip-path: polygon(50% 0,60% 18%,79% 10%,76% 31%,96% 34%,82% 50%,96% 66%,76% 69%,79% 90%,60% 82%,50% 100%,40% 82%,21% 90%,24% 69%,4% 66%,18% 50%,4% 34%,24% 31%,21% 10%,40% 18%);
  z-index: 0; transition: transform .3s ease;
}
[data-graph].g-in .bg-graph.medallions .bg-node.warn::after,
[data-graph].medallions.g-in .bg-node.warn::after { animation: bg-starpulse 2.6s ease-in-out infinite; }
@keyframes bg-starpulse { 0%,100%{ transform: rotate(0) scale(1); opacity:.85 } 50%{ transform: rotate(18deg) scale(1.06); opacity:1 } }
.bg-graph.medallions .bg-node.warn .bg-mlabel { color: var(--brick); }
.bg-graph.medallions .bg-node.warn .bg-mlabel small { color: var(--brick); }

/* stage (dark) medallions */
.stage.medallions .bg-mlabel { color: #EAF2F8; }
.stage.medallions .bg-mlabel small { color: var(--sage-300); }

/* diamond waypoints drawn on edges by graph.js */
.bg-wp { fill: var(--paper); stroke: var(--green); stroke-width: 1.4; vector-effect: non-scaling-stroke; opacity: 0; }
.bg-wp.hot { stroke: var(--ocher); }
.bg-wp.warnline { stroke: var(--brick); }
.stage .bg-wp { fill: #0a2a45; stroke: var(--ocher-300); }
[data-graph].g-in .bg-wp { opacity: 1; transition: opacity .5s ease .3s; }

/* faint ghost nodes for depth (decorative, pure CSS) */
.bg-ghost { position: absolute; border-radius: 50%; z-index: 0; pointer-events: none;
  border: 1.5px dashed rgba(15,163,209,0.3); transform: translate(-50%,-50%); }
.bg-ghost::before { content: ""; position: absolute; inset: 30%; border-radius: 50%; background: rgba(0,120,212,0.12); }

/* ---- mini variant: thumbnail graphs inside cards ---- */
.bg-graph.mini { aspect-ratio: 16 / 10; padding: 2px; border-radius: 0; border-left: 0; border-right: 0; border-top: 0; background-size: auto, auto, 20px 20px, 20px 20px; }
.bg-graph.mini:not(.stage) { background-size: 20px 20px; }
.bg-graph.mini .bg-node { font-size: 0.58rem; padding: 0.34em 0.55em; gap: 0.38em; border-radius: 5px; }
.bg-graph.mini .bg-node small { font-size: 0.5rem; }
.bg-graph.mini .bg-node .dot { width: 6px; height: 6px; border-width: 1.2px; }
.bg-graph.mini .bg-node.hub { padding: 0.42em 0.66em; font-size: 0.6rem; }
.bg-graph.mini .bg-corner { display: none; }
.bg-graph.mini .bg-edge { stroke-width: 1; }

/* ---- legend row shared under graphs ---- */
.g-legend { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 16px; font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.04em; color: var(--sage); }
.g-legend span { display: inline-flex; align-items: center; gap: 0.5em; }
.g-legend i { width: 9px; height: 9px; border-radius: 50%; border: 1.5px solid var(--green); display: block; }
.g-legend i.acc { border-color: var(--ocher); background: var(--ocher); }
.g-legend i.hub { border-color: var(--ocher-300); background: var(--green-900); }
.g-legend i.warn { border-color: var(--brick); background: var(--brick); }