/* Sci-KGFM — Data Driven Twin / Sensor Research Studio design system */

/* ── Design tokens ───────────────────────────────────────────────── */
:root {
  --studio-bg:           #070a12;
  --studio-panel:        rgba(14, 19, 31, 0.9);
  --studio-panel-strong: #111725;
  --studio-line:         rgba(151, 169, 206, 0.15);
  --studio-line-strong:  rgba(151, 169, 206, 0.28);
  --studio-text:         #f5f7fc;
  --studio-muted:        #8d97ad;
  --studio-cyan:         #55e6d1;
  --studio-cyan-rgb:     85, 230, 209;
  --studio-violet:       #a892ff;
  --studio-violet-rgb:   168, 146, 255;
  --studio-amber:        #f5c96a;
  --studio-red:          #ff7a8d;
  --studio-radius:       18px;
  --studio-font:         Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --studio-mono:         "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

/* ── kg-studio wrapper ───────────────────────────────────────────── */
.kg-studio {
  min-height: calc(100vh - 56px);
  background-color: var(--studio-bg);
  background-image:
    linear-gradient(rgba(151, 169, 206, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(151, 169, 206, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  color: var(--studio-text);
  font: 14px/1.5 var(--studio-font);
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 0 24px 40px;
  position: relative;
  overflow-x: hidden;
}

/* ── ambient orbs ────────────────────────────────────────────────── */
.kg-ambient {
  position: absolute;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(90px);
  z-index: 0;
}
.kg-ambient-one {
  width: 520px;
  height: 520px;
  top: -140px;
  left: -100px;
  background: radial-gradient(circle, rgba(var(--studio-violet-rgb), 0.13) 0%, transparent 70%);
}
.kg-ambient-two {
  width: 400px;
  height: 400px;
  bottom: 40px;
  right: -80px;
  background: radial-gradient(circle, rgba(var(--studio-cyan-rgb), 0.1) 0%, transparent 70%);
}

/* push everything above the ambient layer */
.kg-hero,
.kg-status,
.kg-workspace {
  position: relative;
  z-index: 1;
}

/* ── hero ────────────────────────────────────────────────────────── */
.kg-hero {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 32px 0 0;
}
.kg-hero-copy { max-width: 600px; }

.kg-eyebrow {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--studio-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--studio-cyan);
  margin-bottom: 8px;
}
.kg-eyebrow > span {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--studio-cyan);
  box-shadow: 0 0 8px rgba(var(--studio-cyan-rgb), 0.75);
  flex: none;
}

.kg-title-line {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 10px;
}
.kg-title-line h1 {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -.045em;
  color: var(--studio-text);
  margin: 0;
  line-height: 1;
}

.kg-version {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 99px;
  background: rgba(var(--studio-cyan-rgb), 0.1);
  border: 1px solid rgba(var(--studio-cyan-rgb), 0.28);
  color: var(--studio-cyan);
  font-family: var(--studio-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: .1em;
  white-space: nowrap;
}

.kg-hero-copy p {
  color: var(--studio-muted);
  font-size: 13px;
  margin: 0;
  line-height: 1.6;
}

/* ── status bar ──────────────────────────────────────────────────── */
.kg-status {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px;
  padding: 12px 20px;
  background: var(--studio-panel);
  border: 1px solid var(--studio-line);
  border-radius: 12px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.kg-status-track {
  display: flex;
  align-items: center;
  gap: 5px;
}
.kg-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--studio-line-strong);
  transition: background .3s, box-shadow .3s;
}
.kg-status-dot.is-active {
  background: var(--studio-cyan);
  box-shadow: 0 0 8px rgba(var(--studio-cyan-rgb), 0.65);
}
.kg-status-line {
  width: 22px;
  height: 1px;
  background: var(--studio-line-strong);
}
.kg-status > div:nth-child(2) {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}
.kg-status strong {
  font-size: 12px;
  font-weight: 600;
  color: var(--studio-text);
}
.kg-status > div:nth-child(2) > span {
  font-size: 12px;
  color: var(--studio-muted);
}
.kg-provenance {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--studio-mono);
  font-size: 11px;
  color: var(--studio-muted);
  white-space: nowrap;
}
.kg-live-pulse {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--studio-cyan);
  flex: none;
  animation: kg-live-blink 2.2s ease-in-out infinite;
}
@keyframes kg-live-blink {
  0%, 100% { opacity: 1; box-shadow: 0 0 5px rgba(var(--studio-cyan-rgb), 0.9); }
  50%       { opacity: .25; box-shadow: none; }
}

/* ── 3-panel workspace ───────────────────────────────────────────── */
.kg-workspace {
  display: grid;
  grid-template-columns: minmax(260px, 310px) minmax(500px, 1fr) minmax(280px, 340px);
  gap: 12px;
  align-items: start;
  min-height: 0;
}

/* ── panel base ──────────────────────────────────────────────────── */
.kg-panel {
  background: var(--studio-panel);
  border: 1px solid var(--studio-line);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow:
    0 4px 32px rgba(0, 0, 0, .4),
    inset 0 1px 0 rgba(255, 255, 255, .04);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.kg-controls      { border-radius: 18px 7px 7px 18px; }
.kg-canvas-panel  { border-radius: 7px; }
.kg-inspector     { border-radius: 7px 18px 18px 7px; }

/* ── panel header ────────────────────────────────────────────────── */
.kg-panel-head {
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  border-bottom: 1px solid var(--studio-line);
  background: rgba(255, 255, 255, .012);
  flex: none;
}
.kg-panel-head > div {
  display: flex;
  align-items: center;
  gap: 10px;
}
.panel-index {
  font-family: var(--studio-mono);
  font-size: 10px;
  color: var(--studio-cyan);
  letter-spacing: .1em;
}
.kg-panel-head h2 {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--studio-text);
  margin: 0;
}

/* ── panel body (left controls) ──────────────────────────────────── */
.kg-panel-body {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
}

/* ── model identity ──────────────────────────────────────────────── */
.kg-model-identity {
  padding: 14px 18px 14px;
  border-bottom: 1px solid var(--studio-line);
}
.kg-model-kicker {
  display: block;
  font-family: var(--studio-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--studio-muted);
  margin-bottom: 5px;
}
.kg-model-identity h3 {
  font-size: 13px;
  font-weight: 600;
  color: var(--studio-text);
  margin: 0;
}

/* ── control sections ────────────────────────────────────────────── */
.kg-control-section {
  padding: 4px 18px 10px;
}
.kg-section-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--studio-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--studio-muted);
  margin: 12px 0 7px;
}
.kg-section-label > span:first-child {
  white-space: nowrap;
  flex: none;
}
.kg-section-line {
  flex: 1;
  height: 1px;
  background: var(--studio-line);
}

/* ecount sub-label shown next to "Head entity" */
.kg-ecount {
  font-size: 9px;
  color: var(--studio-muted);
  text-transform: none;
  letter-spacing: 0;
  margin-left: 6px;
  opacity: .7;
}

/* ── field inputs ────────────────────────────────────────────────── */
.kg-field {
  margin-bottom: 6px;
}
.kg-field input,
.kg-field select {
  width: 100%;
  height: 34px;
  padding: 0 10px;
  background: rgba(0, 0, 0, .38);
  color: var(--studio-text);
  border: 1px solid var(--studio-line-strong);
  border-radius: 8px;
  font: 13px/1 var(--studio-font);
  box-sizing: border-box;
  transition: border-color .15s, box-shadow .15s;
  appearance: none;
  -webkit-appearance: none;
}
.kg-field input:focus,
.kg-field select:focus {
  outline: none;
  border-color: var(--studio-cyan);
  box-shadow: 0 0 0 2px rgba(var(--studio-cyan-rgb), .14);
}
.kg-field input::placeholder { color: var(--studio-muted); opacity: .6; }

/* head entity multi-select */
select#head {
  height: auto;
  min-height: 120px;
  padding: 6px 8px;
  font-size: 12px;
  line-height: 1.6;
  border-radius: 8px;
  width: 100%;
  box-sizing: border-box;
  background: rgba(0, 0, 0, .38);
  color: var(--studio-text);
  border: 1px solid var(--studio-line-strong);
}
select#head:focus {
  outline: none;
  border-color: var(--studio-cyan);
  box-shadow: 0 0 0 2px rgba(var(--studio-cyan-rgb), .14);
}
select#head option { padding: 3px 4px; }

/* kg-meta: graph info inside the controls panel */
.kg-meta {
  font-family: var(--studio-mono);
  font-size: 11px;
  color: var(--studio-muted);
  line-height: 1.7;
  padding: 6px 0;
}
.kg-meta b { color: var(--studio-text); font-weight: 600; }

/* ── run dock ────────────────────────────────────────────────────── */
.kg-run-dock {
  border-top: 1px solid var(--studio-line);
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, .22));
  padding: 14px 18px;
  flex: none;
}
.kg-run-btn {
  width: 100%;
  min-height: 45px;
  display: grid;
  grid-template-columns: 20px 1fr 20px;
  align-items: center;
  gap: 6px;
  padding: 0 14px;
  background: rgba(var(--studio-cyan-rgb), 0.1);
  border: 1px solid rgba(var(--studio-cyan-rgb), 0.3);
  border-radius: 10px;
  color: var(--studio-cyan);
  font-family: var(--studio-mono);
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .14em;
  cursor: pointer;
  transition: background .15s, border-color .15s, box-shadow .15s, color .15s;
  text-align: center;
}
.kg-run-btn > span:first-child { text-align: left; font-size: 13px; }
.kg-run-btn > span:nth-child(2) { text-align: center; }
.kg-run-btn:hover:not(:disabled) {
  background: rgba(var(--studio-cyan-rgb), 0.18);
  border-color: rgba(var(--studio-cyan-rgb), 0.55);
  box-shadow: 0 0 22px rgba(var(--studio-cyan-rgb), 0.22);
}
.kg-run-btn:disabled {
  background: rgba(255, 255, 255, .04);
  border-color: var(--studio-line);
  color: var(--studio-muted);
  cursor: not-allowed;
  box-shadow: none;
}

/* ── center panel main body ──────────────────────────────────────── */
.kg-main-body {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 16px 20px;
  min-height: 400px;
}

/* ── empty state (shell) ─────────────────────────────────────────── */
.kg-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 70px 24px;
  opacity: .5;
}
.kg-empty h3 {
  font-size: 13px;
  font-weight: 400;
  color: var(--studio-muted);
  text-align: center;
  max-width: 340px;
  margin: 0;
  line-height: 1.6;
}

/* animated orbit ring shared by empty states */
.kg-empty-orbit {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1.5px solid rgba(var(--studio-cyan-rgb), .3);
  border-top-color: var(--studio-cyan);
  animation: kg-orbit 1.5s linear infinite;
  display: flex;
  align-items: center;
  justify-content: center;
}
.kg-empty-orbit > span {
  display: block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(var(--studio-cyan-rgb), .35);
}
@keyframes kg-orbit { to { transform: rotate(360deg); } }

/* ── inspector panel ─────────────────────────────────────────────── */
.kg-evidence-mark {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: 99px;
  background: rgba(var(--studio-violet-rgb), 0.1);
  border: 1px solid rgba(var(--studio-violet-rgb), 0.28);
  color: var(--studio-violet);
  font-family: var(--studio-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: .1em;
  white-space: nowrap;
}
.kg-inspect-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 48px 24px;
  text-align: center;
  flex: 1;
}
.kg-inspect-empty h3 {
  font-size: 13px;
  font-weight: 500;
  color: var(--studio-text);
  opacity: .65;
  margin: 0;
}
.kg-inspect-empty p {
  font-size: 12px;
  color: var(--studio-muted);
  margin: 0;
  line-height: 1.55;
}

/* ══════════════════════════════════════════════════════════════════
   PRESERVED CLASSES — all referenced by kg.js render() / explain()
   ══════════════════════════════════════════════════════════════════ */

/* ── error display ───────────────────────────────────────────────── */
.kg-studio .err {
  color: var(--studio-red);
  font-size: 11px;
  font-family: var(--studio-mono);
  padding: 8px 0 0;
  min-height: 1em;
  line-height: 1.5;
}

/* ── query line (inside #main after render) ──────────────────────── */
.kg-studio .q {
  font-size: 16px;
  margin: 0 0 6px;
  font-family: var(--studio-mono);
  color: var(--studio-text);
  line-height: 1.5;
}
.kg-studio .q .e { color: var(--studio-cyan); }
.kg-studio .q .r { color: #7ee8a2; }

/* ── result meta line ────────────────────────────────────────────── */
.kg-studio .meta {
  font-size: 11px;
  color: var(--studio-muted);
  font-family: var(--studio-mono);
  line-height: 1.7;
  margin-bottom: 12px;
}

/* ── badges ──────────────────────────────────────────────────────── */
.kg-studio .badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 99px;
  font-size: 10px;
  font-weight: 600;
  font-family: var(--studio-mono);
  vertical-align: middle;
}
.kg-studio .zs { background: rgba(var(--studio-cyan-rgb), .1);        color: var(--studio-cyan); }
.kg-studio .nz { background: rgba(245, 201, 106, .1);                 color: var(--studio-amber); }
.kg-studio .un { background: rgba(255, 255, 255, .06);                color: var(--studio-muted); }
.kg-studio .ho {
  font-size: 10px;
  color: var(--studio-amber);
  margin-left: 7px;
  white-space: nowrap;
  vertical-align: middle;
}

/* ── results table ───────────────────────────────────────────────── */
.kg-studio table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}
.kg-studio th {
  text-align: left;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--studio-muted);
  font-weight: 500;
  padding: 0 10px 8px;
  border-bottom: 1px solid var(--studio-line-strong);
  font-family: var(--studio-mono);
}
.kg-studio td {
  padding: 9px 10px;
  border-bottom: 1px solid var(--studio-line);
  vertical-align: middle;
}
.kg-studio tr:nth-child(even) td { background: rgba(255, 255, 255, .012); }

/* rank column */
.kg-studio .rk {
  color: var(--studio-muted);
  width: 38px;
  font-variant-numeric: tabular-nums;
  font-family: var(--studio-mono);
}
/* score column */
.kg-studio .sc {
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--studio-muted);
  width: 82px;
  font-family: var(--studio-mono);
}
/* probability bar column */
.kg-studio .pw { width: 150px; }
.kg-studio .pb {
  height: 5px;
  background: rgba(255, 255, 255, .08);
  border-radius: 3px;
  overflow: hidden;
}
.kg-studio .pf {
  height: 100%;
  background: var(--studio-cyan);
  border-radius: 3px;
  transition: width .3s ease;
}
.kg-studio .pt {
  font-size: 11px;
  color: var(--studio-muted);
  margin-top: 3px;
  font-variant-numeric: tabular-nums;
}

/* ── clickable result rows ───────────────────────────────────────── */
.kg-studio tr.clickable { cursor: pointer; }
.kg-studio tr.clickable:hover td {
  background: rgba(var(--studio-violet-rgb), .07);
}
.kg-studio tr.sel td {
  background: rgba(var(--studio-violet-rgb), .14);
  border-bottom-color: rgba(var(--studio-violet-rgb), .22);
}
.kg-studio .why {
  font-size: 10px;
  color: var(--studio-cyan);
  opacity: 0;
  margin-left: 8px;
  transition: opacity .12s;
  font-family: var(--studio-mono);
}
.kg-studio tr.clickable:hover .why,
.kg-studio tr.sel .why { opacity: .8; }

/* dim low-probability rows */
.kg-studio .dim td { opacity: .38; }

/* entity label in result table */
.kg-studio .eid {
  font-family: var(--studio-mono);
  font-size: 12px;
  color: var(--studio-cyan);
}

/* ── candidate neighbour facts ───────────────────────────────────── */
.kg-studio .fx {
  margin-top: 5px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
}
.kg-studio .fx span {
  font-size: 11px;
  color: var(--studio-muted);
  white-space: nowrap;
}
.kg-studio .fx b {
  color: rgba(255, 255, 255, .6);
  font-weight: 500;
}
.kg-studio .fx .ar {
  color: var(--studio-line-strong);
  margin: 0 3px;
}

/* ── empty state injected by render() ───────────────────────────── */
.kg-studio .empty {
  color: var(--studio-muted);
  margin-top: 80px;
  text-align: center;
  font-size: 13px;
  font-family: var(--studio-mono);
  letter-spacing: .03em;
  opacity: .55;
}

/* ── disclaimer note ─────────────────────────────────────────────── */
.kg-studio .note {
  margin-top: 22px;
  padding: 12px 16px;
  border-left: 2px solid var(--studio-line-strong);
  background: rgba(255, 255, 255, .015);
  border-radius: 0 8px 8px 0;
  color: var(--studio-muted);
  font-size: 12px;
  line-height: 1.65;
}
.kg-studio .note b { color: var(--studio-text); }

/* ── loading spinner ─────────────────────────────────────────────── */
.kg-studio .spin {
  color: var(--studio-cyan);
  font-size: 12px;
  margin-top: 14px;
  font-family: var(--studio-mono);
  animation: kg-pulse 1.2s ease-in-out infinite;
}
@keyframes kg-pulse {
  0%, 100% { opacity: .35; }
  50%       { opacity: 1; }
}

/* ── path explanation panel ──────────────────────────────────────── */
.kg-studio .expl {
  margin-top: 26px;
  padding: 18px 20px;
  background: var(--studio-panel-strong);
  border: 1px solid var(--studio-line-strong);
  border-left: 3px solid var(--studio-cyan);
  border-radius: 0 12px 12px 0;
}
.kg-studio .expl h3 {
  font-size: 11px;
  margin: 0 0 5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--studio-cyan);
  font-family: var(--studio-mono);
}
.kg-studio .expl .hint {
  color: var(--studio-muted);
  font-size: 12px;
  margin: 0 0 14px;
  line-height: 1.65;
}

/* ── SVG path visualization ──────────────────────────────────────── */
.kg-studio .viz {
  width: 100%;
  overflow-x: auto;
  background: rgba(0, 0, 0, .38);
  border: 1px solid var(--studio-line);
  border-radius: 8px;
}
.kg-studio .viz svg { display: block; }

/* graph node rects */
.kg-studio .nd rect {
  fill: var(--studio-panel-strong);
  stroke: var(--studio-line-strong);
  stroke-width: 1;
}
/* query source node */
.kg-studio .nd.q rect {
  fill: rgba(var(--studio-cyan-rgb), .08);
  stroke: var(--studio-cyan);
  stroke-width: 1.5;
}
/* target node */
.kg-studio .nd.t rect {
  fill: rgba(var(--studio-violet-rgb), .08);
  stroke: var(--studio-violet);
  stroke-width: 1.5;
}
.kg-studio .nd text {
  fill: var(--studio-text);
  font-size: 11px;
  dominant-baseline: middle;
}

/* graph edges */
.kg-studio .eg {
  fill: none;
  stroke: rgba(var(--studio-cyan-rgb), .28);
  stroke-linecap: round;
}
.kg-studio .eg.inv { stroke-dasharray: 4 3; }
.kg-studio .eg-l {
  fill: var(--studio-muted);
  font-size: 9.5px;
  text-anchor: middle;
}

/* ── path list below SVG ─────────────────────────────────────────── */
.kg-studio .pl { margin-top: 16px; }
.kg-studio .pl .row {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 6px 8px;
  border-radius: 5px;
  font-size: 12px;
  transition: background .1s;
}
.kg-studio .pl .row:hover { background: rgba(255, 255, 255, .04); }
.kg-studio .pl .w {
  color: var(--studio-muted);
  font-variant-numeric: tabular-nums;
  min-width: 58px;
  flex: none;
  font-family: var(--studio-mono);
}
.kg-studio .pl .chain { color: var(--studio-text); font-family: var(--studio-mono); }
.kg-studio .pl .chain .r     { color: var(--studio-cyan); }
.kg-studio .pl .chain .r.inv { color: var(--studio-amber); }
.kg-studio .pl .chain .sep   { color: var(--studio-line-strong); margin: 0 4px; }

/* ── responsive fallback (narrow viewports) ──────────────────────── */
@media (max-width: 1100px) {
  .kg-workspace {
    grid-template-columns: minmax(240px, 290px) 1fr;
    grid-template-rows: auto auto;
  }
  .kg-inspector {
    grid-column: 1 / -1;
    border-radius: 7px 7px 18px 18px;
  }
  .kg-controls { border-radius: 18px 7px 7px 18px; }
  .kg-canvas-panel { border-radius: 7px 18px 7px 7px; }
}
@media (max-width: 720px) {
  .kg-workspace {
    grid-template-columns: 1fr;
  }
  .kg-controls,
  .kg-canvas-panel,
  .kg-inspector { border-radius: 12px; }
  .kg-studio { padding: 0 14px 32px; }
}