html.copyright-protected body,
html.copyright-protected body *:not(input):not(textarea):not(select):not([contenteditable="true"]) {
  -webkit-user-select: none;
  user-select: none;
}

html.copyright-protected img,
html.copyright-protected video {
  -webkit-user-drag: none;
  user-drag: none;
}

.library-back-link {
  position: fixed;
  top: 18px;
  right: 22px;
  z-index: 1100;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid rgba(44, 99, 73, 0.24);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  color: #2c6349;
  padding: 8px 13px;
  font: 500 12px/1.2 system-ui, -apple-system, sans-serif;
  text-decoration: none;
  box-shadow: 0 4px 16px rgba(24, 43, 34, 0.08);
}

.library-back-link:hover {
  background: #2c6349;
  color: #fff;
}

.nav-back-top {
  display: block;
  margin: 12px 16px 20px;
  padding: 16px;
  border: 1px solid var(--border, #dfe5e2);
  border-radius: var(--radius, 16px);
  color: var(--accent, #2c6349);
  font: 500 0.8rem/1.4 system-ui, -apple-system, sans-serif;
  text-align: center;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.nav-back-top:hover,
.nav-back-top:focus-visible {
  border-color: var(--accent, #2c6349);
  background: var(--accent, #2c6349);
  color: #fff;
  outline: none;
}

@media (max-width: 600px) {
  .library-back-link {
    top: 12px;
    right: 12px;
    padding: 7px 10px;
    font-size: 11px;
  }
}