/* ═══════════════════════════════════════════════════════════
   Self-hosted knowledge graph viewer (sigma.js)
   Used on /case-studies/syria-information-warfare/
   ═══════════════════════════════════════════════════════════ */

.kg {
  --kg-bg: #0E1524;
  --kg-panel: rgba(18, 25, 46, 0.92);
  --kg-line: rgba(255, 255, 255, 0.09);
  --kg-text: #E9EDF3;
  --kg-dim: rgba(233, 237, 243, 0.55);
  position: relative;
  width: 100%;
  height: 680px;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background:
    radial-gradient(ellipse 70% 60% at 50% 45%, rgba(42, 63, 98, 0.45), transparent 70%),
    radial-gradient(ellipse 40% 40% at 85% 10%, rgba(200, 148, 58, 0.06), transparent 70%),
    var(--kg-bg);
  color: var(--kg-text);
  font-family: var(--sans);
  user-select: none;
}
.kg:fullscreen { height: 100vh; border-radius: 0; border: none; }
.kg-stage { position: absolute; inset: 0; }

/* loading */
.kg-loading {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1rem;
  font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--kg-dim);
  z-index: 5; background: var(--kg-bg); transition: opacity 0.5s;
}
.kg-loading.done { opacity: 0; pointer-events: none; }
.kg-spinner { width: 28px; height: 28px; border: 2px solid rgba(200,148,58,0.2); border-top-color: var(--gold); border-radius: 50%; animation: kg-spin 0.9s linear infinite; }
@keyframes kg-spin { to { transform: rotate(360deg); } }

/* search */
.kg-search { position: absolute; top: 1rem; left: 1rem; width: min(320px, calc(100% - 5.5rem)); z-index: 4; }
.kg-search input {
  width: 100%; padding: 0.6875rem 0.875rem 0.6875rem 2.25rem;
  background: var(--kg-panel); color: var(--kg-text);
  border: 1px solid var(--kg-line); border-radius: 3px; outline: none;
  font-family: var(--sans); font-size: 0.875rem;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.kg-search input::placeholder { color: rgba(233,237,243,0.4); }
.kg-search input:focus { border-color: rgba(200,148,58,0.6); }
.kg-search svg { z-index: 1; pointer-events: none; position: absolute; left: 0.75rem; top: 1.125rem; transform: translateY(-50%); width: 14px; height: 14px; stroke: var(--kg-dim); }
.kg-results {
  list-style: none; margin-top: 0.375rem; background: var(--kg-panel); border: 1px solid var(--kg-line); border-radius: 3px;
  max-height: 300px; overflow-y: auto; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.kg-results[hidden] { display: none; }
.kg-results li { padding: 0.5625rem 0.875rem; font-size: 0.84375rem; cursor: pointer; display: flex; gap: 0.625rem; align-items: center; }
.kg-results li:hover, .kg-results li.on { background: rgba(200,148,58,0.12); }
.kg-results .kg-rtype { margin-left: auto; font-family: var(--mono); font-size: 0.625rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--kg-dim); }
.kg-dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }

/* controls */
.kg-controls { position: absolute; top: 1rem; right: 1rem; display: flex; flex-direction: column; gap: 1px; z-index: 4; border: 1px solid var(--kg-line); border-radius: 3px; overflow: hidden; }
.kg-btn {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  background: var(--kg-panel); border: none; color: var(--kg-text); cursor: pointer; transition: background 0.15s;
}
.kg-btn:hover { background: rgba(200,148,58,0.18); }
.kg-btn svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

/* legend */
.kg-legend { position: absolute; left: 1rem; bottom: 1rem; display: flex; flex-wrap: wrap; gap: 0.375rem; max-width: calc(100% - 2rem); z-index: 3; }
.kg-chip {
  display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.375rem 0.6875rem;
  background: var(--kg-panel); border: 1px solid var(--kg-line); border-radius: 999px; cursor: pointer;
  font-family: var(--sans); font-size: 0.75rem; color: var(--kg-text); transition: opacity 0.15s, border-color 0.15s;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.kg-chip:hover { border-color: rgba(255,255,255,0.25); }
.kg-chip.off { opacity: 0.38; }
.kg-chip .kg-n { font-family: var(--mono); font-size: 0.625rem; color: var(--kg-dim); }

.kg-hint {
  position: absolute; right: 4rem; top: 1.75rem; z-index: 3; pointer-events: none;
  font-family: var(--mono); font-size: 0.625rem; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(233,237,243,0.35);
  transition: opacity 0.3s;
}
.kg-toast {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); z-index: 6; pointer-events: none;
  background: rgba(10,14,24,0.85); color: var(--kg-text); padding: 0.75rem 1.125rem; border-radius: 3px;
  font-size: 0.8125rem; opacity: 0; transition: opacity 0.25s;
}
.kg-toast.show { opacity: 1; }

.kg-has-panel .kg-hint { opacity: 0; }
@media (min-width: 701px) { .kg-has-panel .kg-legend { max-width: calc(100% - 340px - 2rem); } }

/* details panel */
.kg-panel {
  position: absolute; top: 0; right: 0; bottom: 0; width: 340px; z-index: 5;
  background: var(--kg-panel); border-left: 1px solid var(--kg-line);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  transform: translateX(100%); transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  display: flex; flex-direction: column; user-select: text;
}
.kg-panel.open { transform: none; }
.kg-panel-head { padding: 1.5rem 1.5rem 1.125rem; border-bottom: 1px solid var(--kg-line); position: relative; }
.kg-close { position: absolute; top: 0.875rem; right: 0.875rem; width: 30px; height: 30px; }
.kg-type { display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--mono); font-size: 0.625rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--kg-dim); margin-bottom: 0.625rem; }
.kg-name { font-family: var(--serif); font-size: 1.3125rem; font-weight: 600; line-height: 1.3; padding-right: 1.5rem; }
.kg-panel-body { overflow-y: auto; padding: 1.125rem 1.5rem 1.5rem; flex: 1; }
.kg-props { display: grid; grid-template-columns: 1fr auto; gap: 0.5rem 1rem; font-size: 0.8125rem; margin-bottom: 1.5rem; }
.kg-props dt { color: var(--kg-dim); }
.kg-props dd { text-align: right; font-family: var(--mono); font-size: 0.75rem; color: var(--kg-text); }
.kg-sec { font-family: var(--mono); font-size: 0.625rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold); margin: 0 0 0.75rem; }
.kg-group { margin-bottom: 1.125rem; }
.kg-group-name { font-size: 0.75rem; color: var(--kg-dim); margin-bottom: 0.375rem; display: flex; justify-content: space-between; }
.kg-links { list-style: none; display: flex; flex-direction: column; gap: 1px; }
.kg-links li button {
  width: 100%; text-align: left; background: none; border: none; color: var(--kg-text); cursor: pointer;
  display: flex; gap: 0.5rem; align-items: center; padding: 0.3125rem 0.375rem; border-radius: 2px;
  font-family: var(--sans); font-size: 0.8125rem; line-height: 1.35;
}
.kg-links li button:hover { background: rgba(255,255,255,0.06); }
.kg-more { font-size: 0.75rem; color: var(--kg-dim); padding: 0.25rem 0.375rem; }

/* share */
.kg-share-pill {
  display: inline-flex; align-items: center; gap: 0.4375rem; margin-top: 0.875rem;
  background: rgba(200,148,58,0.14); border: 1px solid rgba(200,148,58,0.45); color: #E8D08A; border-radius: 999px;
  padding: 0.375rem 0.75rem; font-family: var(--sans); font-size: 0.75rem; cursor: pointer; transition: background 0.15s;
}
.kg-share-pill:hover { background: rgba(200,148,58,0.26); }
.kg-share-pill svg { width: 13px; height: 13px; stroke: currentColor; fill: none; stroke-width: 1.8; }
.kg-share {
  position: absolute; top: 1rem; right: 3.75rem; z-index: 7; width: min(340px, calc(100% - 5rem));
  background: rgba(14, 20, 36, 0.97); border: 1px solid rgba(200,148,58,0.4); border-radius: 4px; padding: 1rem 1.125rem 1.125rem;
  box-shadow: 0 16px 40px rgba(0,0,0,0.45); user-select: text;
}
.kg-share[hidden] { display: none; }
.kg-has-panel .kg-share { right: calc(340px + 1rem); }
.kg-share-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.625rem;
  font-family: var(--mono); font-size: 0.625rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold); }
.kg-share-x { width: 28px; height: 28px; background: transparent; }
.kg-share-what { display: flex; gap: 0.5rem; align-items: center; font-family: var(--serif); font-size: 0.9375rem; line-height: 1.35; margin-bottom: 0.75rem; }
.kg-share-link { display: flex; gap: 0.375rem; margin-bottom: 0.75rem; }
.kg-share-link input {
  flex: 1; min-width: 0; background: rgba(255,255,255,0.05); border: 1px solid var(--kg-line); border-radius: 3px; color: var(--kg-text);
  font-family: var(--mono); font-size: 0.6875rem; padding: 0.5rem 0.625rem; outline: none;
}
.kg-copy { background: var(--gold); color: var(--charcoal); border: none; border-radius: 3px; padding: 0 0.875rem; font-family: var(--sans); font-size: 0.75rem; font-weight: 500; cursor: pointer; }
.kg-share-btns { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.375rem; }
.kg-share-btns a, .kg-share-btns button {
  display: flex; align-items: center; justify-content: center; padding: 0.5rem; border-radius: 3px; text-decoration: none; cursor: pointer;
  background: rgba(255,255,255,0.05); border: 1px solid var(--kg-line); color: var(--kg-text); font-family: var(--sans); font-size: 0.8125rem;
}
.kg-share-btns a:hover, .kg-share-btns button:hover { border-color: rgba(200,148,58,0.6); }
.kg-share-note { margin-top: 0.75rem; font-size: 0.71875rem; line-height: 1.5; color: var(--kg-dim); }

@media (max-width: 700px) {
  .kg { height: 520px; }
  .kg-share, .kg-has-panel .kg-share { right: 1rem; left: 1rem; width: auto; top: 3.75rem; }
  .kg-panel { top: auto; left: 0; width: auto; height: 62%; border-left: none; border-top: 1px solid var(--kg-line); transform: translateY(100%); }
  .kg-hint { display: none; }
  .kg-legend { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 2px; }
  .kg-chip { flex: none; }
}
@media (max-width: 400px) { .kg { height: 460px; } }
@media (prefers-reduced-motion: reduce) { .kg-panel { transition: none; } }