/* =====================================================================
   PVV v5 — Per-claim source-viewer popover (citation detail panel).
   Reader trust is built by showing *exact* primary-source text on demand,
   not a paraphrase. The popover must be fast, readable, keyboard-friendly,
   and visually subordinate to the article — it's a detail layer, not the
   main surface.
   ===================================================================== */

[data-pvv-cite] {
  color: #0b4f3f;
  cursor: pointer;
  border-bottom: 1px dashed rgba(11, 79, 63, .5);
  text-underline-offset: 2px;
  transition: border-color .15s ease, background .15s ease;
}

[data-pvv-cite]:hover,
[data-pvv-cite]:focus {
  background: rgba(255, 193, 7, .16);
  border-bottom-color: #0b4f3f;
  outline: none;
}

[data-pvv-cite].pvv-cite-loading::after {
  content: ' ⌛';
  font-size: 0.9em;
  opacity: .6;
  animation: pvv-cite-pulse 900ms linear infinite;
}

@keyframes pvv-cite-pulse {
  0%, 100% { opacity: .4; }
  50%      { opacity: 1; }
}

.pvv-source-popover {
  background: #fff;
  border: 1px solid rgba(11, 79, 63, .3);
  border-radius: 10px;
  box-shadow:
    0 6px 24px rgba(0, 0, 0, .14),
    0 2px  8px rgba(11, 79, 63, .08);
  font: 14px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: #222;
  min-width: 280px;
  max-width: 380px;
  overflow: hidden;
  animation: pvv-pop-fade 180ms ease-out;
  box-sizing: border-box;
}

@keyframes pvv-pop-fade {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.pvv-source-pop-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: linear-gradient(180deg, #fff8ed 0%, #fff 100%);
  border-bottom: 1px solid rgba(11, 79, 63, .12);
}

.pvv-source-pop-agency {
  background: #0b4f3f;
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .4px;
  padding: 3px 8px;
  border-radius: 4px;
  text-transform: uppercase;
}

.pvv-source-pop-cite {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  color: #555;
  flex: 1 1 auto;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pvv-source-pop-close {
  background: transparent;
  color: #555;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 20px;
  line-height: 1;
  padding: 0 8px;
  cursor: pointer;
  flex: 0 0 auto;
}

.pvv-source-pop-close:hover { background: rgba(0,0,0,.06); color: #0b4f3f; }
.pvv-source-pop-close:focus { outline: 2px solid #ffc107; outline-offset: 1px; }

.pvv-source-pop-body { padding: 12px; }

.pvv-source-pop-quote {
  margin: 0 0 10px;
  padding: 0 0 0 12px;
  border-left: 3px solid rgba(11, 79, 63, .35);
  font-style: normal;
  color: #333;
  line-height: 1.5;
  max-height: 220px;
  overflow-y: auto;
}

.pvv-source-pop-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding-top: 8px;
  border-top: 1px solid rgba(11, 79, 63, .08);
  font-size: 12px;
  color: #555;
}

.pvv-source-pop-ext {
  color: #0b4f3f;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(11, 79, 63, .4);
}

.pvv-source-pop-ext:hover { border-bottom-color: #0b4f3f; }
.pvv-source-pop-ext:focus { outline: 2px solid #ffc107; outline-offset: 1px; }

.pvv-source-pop-date {
  font-size: 11px;
  color: #888;
}

.pvv-source-pop-empty {
  color: #555;
  font-style: italic;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  .pvv-source-popover {
    background: #1a2624;
    color: #eee;
    border-color: rgba(255,255,255,.18);
    box-shadow: 0 6px 30px rgba(0, 0, 0, .6);
  }
  .pvv-source-pop-head {
    background: linear-gradient(180deg, #223230 0%, #1a2624 100%);
    border-bottom-color: rgba(255,255,255,.08);
  }
  .pvv-source-pop-agency { background: #9fd8c5; color: #0b4f3f; }
  .pvv-source-pop-cite { color: #bbb; }
  .pvv-source-pop-close { color: #ccc; }
  .pvv-source-pop-close:hover { color: #9fd8c5; background: rgba(255,255,255,.07); }
  .pvv-source-pop-quote {
    color: #ddd;
    border-left-color: rgba(255,255,255,.22);
    background: rgba(255,255,255,.02);
  }
  .pvv-source-pop-foot { border-top-color: rgba(255,255,255,.08); color: #aaa; }
  .pvv-source-pop-ext { color: #9fd8c5; border-bottom-color: rgba(159, 216, 197, .5); }
  [data-pvv-cite] { color: #9fd8c5; border-bottom-color: rgba(159, 216, 197, .45); }
  [data-pvv-cite]:hover,
  [data-pvv-cite]:focus { background: rgba(255, 193, 7, .2); border-bottom-color: #9fd8c5; }
}

@media (prefers-reduced-motion: reduce) {
  .pvv-source-popover { animation: none; }
  [data-pvv-cite].pvv-cite-loading::after { animation: none; }
}