/* Visual language mirrors the VS Code extension's popover: slate-900
   background, sky-blue accents, dark-mode by default. */

:root {
  --bg: #0f172a;
  --fg: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --border: #1e293b;
  --danger: #ef4444;
  --success: #22c55e;
  --modal-bg: #1e293b;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 14px;
}

#stage {
  position: fixed;
  inset: 0;
  display: block;
}

#stage svg {
  width: 100%;
  height: 100%;
  cursor: grab;
}

#stage svg:active { cursor: grabbing; }

/* SVG class hooks used by the renderer for theme colours */
svg .pv-default-fill { fill: #1e293b; }
svg .pv-default-stroke { stroke: var(--border); }
svg .pv-default-arrow-stroke { stroke: var(--fg); }
svg .pv-default-arrow-fill { fill: var(--fg); }
svg .pv-title { fill: var(--fg); }
svg .pv-container-fill { fill: #1e293b; }
svg .pv-container-stroke { stroke: var(--border); }
svg .pv-container-label { fill: var(--muted); }
svg .pv-edge-line { /* per-edge */ }
svg .pv-edge-label {
  opacity: 0;
  transition: opacity 0.12s ease;
  pointer-events: none;
}
svg [data-relationship-group]:hover .pv-edge-label { opacity: 1; }

/* Toolbar (top-right) */
#toolbar {
  position: fixed;
  top: 12px;
  right: 12px;
  z-index: 10;
  display: flex;
  gap: 6px;
}

.lo-tb-btn {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 10px;
  background: var(--modal-bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 6px;
  text-decoration: none;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}
.lo-tb-btn:hover { background: #273449; }

/* Loading / error / landing states */
.lo-status, .lo-error, .lo-landing {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
}
.lo-status { color: var(--muted); }
.lo-error { color: var(--danger); }
.lo-landing h1 {
  font-size: 32px;
  margin: 0 0 12px;
  color: var(--accent);
}
.lo-landing p {
  color: var(--muted);
  max-width: 520px;
  line-height: 1.5;
}
.lo-cta a {
  color: var(--accent);
  text-decoration: none;
}
.lo-cta a:hover { text-decoration: underline; }

/* Password modal */
.lo-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.lo-modal {
  background: var(--modal-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px 24px;
  max-width: 360px;
  width: 90vw;
}
.lo-modal h2 { margin: 0 0 8px; font-size: 16px; }
.lo-modal-sub { margin: 0 0 12px; color: var(--muted); font-size: 13px; }
.lo-modal-err { margin: 0 0 12px; color: var(--danger); font-size: 13px; }
.lo-modal input[type=password] {
  width: 100%;
  padding: 8px 10px;
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  font: inherit;
  margin-bottom: 12px;
}
.lo-modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}
.lo-modal-actions button {
  padding: 6px 12px;
  background: var(--border);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
.lo-modal-actions button[type=submit] {
  background: var(--accent);
  color: #0f172a;
  border-color: var(--accent);
  font-weight: 600;
}
.lo-modal-actions button:hover { filter: brightness(1.1); }

/* Hover popover — same colour palette as the extension's meta label. */
.lo-popover {
  position: fixed;
  display: none;
  background: var(--modal-bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px 12px;
  font-size: 12px;
  line-height: 1.5;
  max-width: 360px;
  pointer-events: none;
  z-index: 100;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
}
.lo-popover__title { font-weight: 600; }
.lo-popover__sub { color: var(--muted); font-size: 11px; margin-top: 2px; }
.lo-popover__body { margin-top: 6px; }
.lo-popover__refs { margin-top: 6px; font-size: 11px; }
.lo-popover__ref { margin-top: 2px; }
.lo-popover__ref-key { color: #64748b; }
.lo-popover__sep { border-top: 1px solid var(--border); margin: 8px 0; }

/* Primary toolbar button — sky-blue, draws the eye for the conversion CTA. */
.lo-tb-btn.lo-tb-btn--primary {
  background: var(--accent);
  color: #0f172a;
  border-color: var(--accent);
  font-weight: 600;
}
.lo-tb-btn.lo-tb-btn--primary:hover { filter: brightness(1.1); }