@keyframes popover-v2-dropin {
  0%   { opacity: 0; visibility: hidden; }
  1%   { opacity: 0; }
  100% { opacity: 1; visibility: visible; }
}

.popover-v2 {
  z-index: 999;
  position: fixed;
  overflow: visible;
  padding: 1rem;
  left: 0;
  top: 0;
  will-change: transform;
  visibility: hidden;
  opacity: 0;
  transition:
    opacity 0.3s ease,
    visibility 0.3s ease;
}

.popover-v2 > .popover-v2-inner {
  position: relative;
  width: 30rem;
  max-height: 20rem;
  padding: 1rem;
  font-weight: initial;
  font-style: initial;
  line-height: normal;
  font-size: 0.9rem;
  font-family: var(--bodyFont, inherit);
  border: 1px solid var(--lightgray, #ddd);
  background-color: var(--light, #fff);
  color: var(--dark, #222);
  border-radius: 5px;
  box-shadow: 6px 6px 36px 0 rgba(0, 0, 0, 0.25);
  overflow: auto;
  overscroll-behavior: contain;
  white-space: normal;
  cursor: default;
}

.popover-v2 > .popover-v2-inner[data-content-type*="pdf"],
.popover-v2 > .popover-v2-inner[data-content-type*="image"] {
  padding: 0;
  max-height: 100%;
}

.popover-v2 > .popover-v2-inner[data-content-type*="image"] img {
  margin: 0;
  border-radius: 0;
  display: block;
  max-width: 100%;
}

.popover-v2 > .popover-v2-inner[data-content-type*="pdf"] iframe {
  width: 100%;
  min-height: 20rem;
  border: 0;
}

.popover-v2 h1,
.popover-v2 h2,
.popover-v2 h3 { font-size: 1rem; margin-top: 0.4rem; }
.popover-v2 p { margin: 0.4rem 0; }
.popover-v2 img { max-width: 100%; }

.popover-v2 .meta {
  opacity: 0.7;
  font-style: italic;
  font-size: 0.85rem;
  color: var(--gray, #4e4e4e);
}
.popover-v2 .meta .meta-label-full  { display: none; }
.popover-v2 .meta .meta-label-short { display: inline; }

.popover-v2 .e-content a[href^="http"]:not(.hanchor) {
  color: var(--gray);
  text-decoration: underline;
  text-decoration-color: var(--secondary);
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
}

.popover-v2 .e-content a.internal-link:not(.broken),
.popover-v2 .e-content a:not(.internal-link):not(.hanchor):not([href^="http"]) {
  color: var(--gray);
  background-color: transparent;
  text-decoration: underline;
  text-decoration-color: var(--tertiary);
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
}

.popover-v2 .e-content a.internal-link.broken {
  color: #000;
  background-color: transparent;
  text-decoration: underline dashed;
  text-decoration-color: #555;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  cursor: not-allowed;
}

[saved-theme="dark"] .popover-v2 .e-content a[href^="http"]:not(.hanchor) {
  text-decoration-color: var(--primary);
}
[saved-theme="dark"] .popover-v2 .e-content a.internal-link:not(.broken),
[saved-theme="dark"] .popover-v2 .e-content a:not(.internal-link):not(.hanchor):not([href^="http"]) {
  text-decoration-color: var(--secondary);
}
[saved-theme="dark"] .popover-v2 .e-content a.internal-link.broken {
  color: #8BA4B0;
  opacity: 0.7;
  text-decoration-color: #8BA4B0;
}

/* Blog dark mode (uBlogger sets body[theme="dark"]).
   Mirrors blog _override.scss colors: inner article bg #1F1F28, fujiWhite text. */
body[theme="dark"] .popover-v2 > .popover-v2-inner {
  background-color: #1F1F28;
  color: #DCD7BA;
  border-color: #54546D;
}
body[theme="dark"] .popover-v2 .meta {
  color: #C8C093;
}
body[theme="dark"] .popover-v2 .e-content a.internal-link:not(.broken),
body[theme="dark"] .popover-v2 .e-content a:not(.internal-link):not(.hanchor):not([href^="http"]) {
  color: #DCD7BA;
  text-decoration-color: #658594; /* dragonBlue — same as blog body links */
}
body[theme="dark"] .popover-v2 .e-content a[href^="http"]:not(.hanchor) {
  color: #DCD7BA;
  text-decoration-color: #D27E99; /* sakuraPink — matches blog external links */
}
body[theme="dark"] .popover-v2 .e-content a.internal-link.broken {
  color: #7E8A8A;
  text-decoration-color: #7E8A8A;
}

/* Book (mdBook): use the book's per-theme CSS variables so the popover
   adapts to whichever theme is active (light, ayu, burgundy, coal,
   kanagawa, navy, pinkrose, rust, tokyonight). */
html.light .popover-v2 > .popover-v2-inner,
html.ayu .popover-v2 > .popover-v2-inner,
html.burgundy .popover-v2 > .popover-v2-inner,
html.coal .popover-v2 > .popover-v2-inner,
html.kanagawa .popover-v2 > .popover-v2-inner,
html.navy .popover-v2 > .popover-v2-inner,
html.pinkrose .popover-v2 > .popover-v2-inner,
html.rust .popover-v2 > .popover-v2-inner,
html.tokyonight .popover-v2 > .popover-v2-inner {
  background-color: var(--bg);
  color: var(--fg);
  border-color: var(--quote-border, var(--icons));
}
html.light .popover-v2 .meta,
html.ayu .popover-v2 .meta,
html.burgundy .popover-v2 .meta,
html.coal .popover-v2 .meta,
html.kanagawa .popover-v2 .meta,
html.navy .popover-v2 .meta,
html.pinkrose .popover-v2 .meta,
html.rust .popover-v2 .meta,
html.tokyonight .popover-v2 .meta {
  color: var(--icons);
}
/* Inside the popover, brain content links keep brain's class="internal-link" semantics.
   Working internal → full --links color; external (http) → --inline-code-color; broken → muted. */
html.light .popover-v2 .e-content a.internal-link:not(.broken),
html.ayu .popover-v2 .e-content a.internal-link:not(.broken),
html.burgundy .popover-v2 .e-content a.internal-link:not(.broken),
html.coal .popover-v2 .e-content a.internal-link:not(.broken),
html.kanagawa .popover-v2 .e-content a.internal-link:not(.broken),
html.navy .popover-v2 .e-content a.internal-link:not(.broken),
html.pinkrose .popover-v2 .e-content a.internal-link:not(.broken),
html.rust .popover-v2 .e-content a.internal-link:not(.broken),
html.tokyonight .popover-v2 .e-content a.internal-link:not(.broken) {
  color: var(--fg);
  text-decoration-color: var(--links);
}
html.light .popover-v2 .e-content a[href^="http"]:not(.hanchor),
html.ayu .popover-v2 .e-content a[href^="http"]:not(.hanchor),
html.burgundy .popover-v2 .e-content a[href^="http"]:not(.hanchor),
html.coal .popover-v2 .e-content a[href^="http"]:not(.hanchor),
html.kanagawa .popover-v2 .e-content a[href^="http"]:not(.hanchor),
html.navy .popover-v2 .e-content a[href^="http"]:not(.hanchor),
html.pinkrose .popover-v2 .e-content a[href^="http"]:not(.hanchor),
html.rust .popover-v2 .e-content a[href^="http"]:not(.hanchor),
html.tokyonight .popover-v2 .e-content a[href^="http"]:not(.hanchor) {
  color: var(--fg);
  text-decoration-color: var(--inline-code-color);
}
html.light .popover-v2 .e-content a.internal-link.broken,
html.ayu .popover-v2 .e-content a.internal-link.broken,
html.burgundy .popover-v2 .e-content a.internal-link.broken,
html.coal .popover-v2 .e-content a.internal-link.broken,
html.kanagawa .popover-v2 .e-content a.internal-link.broken,
html.navy .popover-v2 .e-content a.internal-link.broken,
html.pinkrose .popover-v2 .e-content a.internal-link.broken,
html.rust .popover-v2 .e-content a.internal-link.broken,
html.tokyonight .popover-v2 .e-content a.internal-link.broken {
  color: var(--icons);
  text-decoration-color: var(--icons);
  text-decoration-style: dashed;
}

@media (max-width: 768px) {
  .popover-v2 { display: none !important; }
}

.popover-v2.active-popover {
  animation: popover-v2-dropin 0.3s ease;
  animation-fill-mode: forwards;
  animation-delay: 0.15s;
}

.popover-v2:hover {
  visibility: visible;
  opacity: 1;
}