/* Feature tree — large readable hover preview */
.eh-feat-preview {
  position: fixed;
  z-index: 1200;
  width: min(960px, calc(100vw - 40px));
  max-height: min(86vh, 720px);
  padding: 14px 14px 12px;
  border-radius: 20px;
  border: 1px solid rgba(9, 92, 255, 0.2);
  background: rgba(255, 255, 255, 0.98);
  box-shadow:
    0 36px 80px rgba(12, 30, 80, 0.28),
    0 0 0 1px rgba(255, 255, 255, 0.85) inset;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(10px) scale(0.97);
  transition:
    opacity 0.18s ease,
    transform 0.22s cubic-bezier(0.22, 1, 0.36, 1),
    visibility 0.18s;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.eh-feat-preview.is-on {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}
.eh-feat-preview-media {
  display: block;
  width: 100%;
  height: auto;
  max-height: min(74vh, 620px);
  object-fit: contain;
  object-position: top center;
  border-radius: 14px;
  background:
    linear-gradient(180deg, #eef3fb, #f8faff);
  box-shadow: inset 0 0 0 1px rgba(28, 70, 150, 0.08);
}
.eh-feat-preview-cap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-top: 12px;
  padding: 0 6px 2px;
  flex: none;
}
.eh-feat-preview-cap b {
  color: #0b1220;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.eh-feat-preview-cap span {
  color: #5a6a86;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.feature-tree-node .feature-tree-image {
  cursor: zoom-in;
}
.feature-tree-node.is-previewing {
  z-index: 40 !important;
  border-color: #095cff !important;
  box-shadow:
    0 24px 54px rgba(25, 64, 151, 0.22),
    0 0 0 5px rgba(9, 92, 255, 0.1),
    inset 0 1px 0 #fff !important;
}

@media (max-width: 980px) {
  .eh-feat-preview {
    width: min(860px, calc(100vw - 28px));
  }
}

@media (hover: none), (max-width: 720px) {
  .eh-feat-preview {
    display: none !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .eh-feat-preview {
    transition: opacity 0.12s ease;
    transform: none;
  }
}