.copy-source-toggle {
  position: fixed;
  top: 20px;
  right: 140px;
  z-index: 1000;
  background: transparent;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  width: 32px;
  height: 32px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  opacity: 0.6;
  transition: opacity 0.15s, background-color 0.15s, color 0.15s;
}

.copy-source-toggle:hover {
  opacity: 1;
}

.copy-source-toggle-icon {
  font-size: 16px;
  line-height: 1;
  color: #656d76;
}

/* Transient state after a successful copy. JS swaps the icon and adds
   `is-copied` for ~1.2s, then reverts. */
.copy-source-toggle.is-copied {
  opacity: 1;
  background: #ddf4ff;
  border-color: #0969da;
}
.copy-source-toggle.is-copied .copy-source-toggle-icon {
  color: #0969da;
}

@media (prefers-color-scheme: dark) {
  .copy-source-toggle {
    border-color: #484f58;
  }
  .copy-source-toggle-icon {
    color: #8b949e;
  }
  .copy-source-toggle.is-copied {
    background: rgba(56, 139, 253, 0.18);
    border-color: #58a6ff;
  }
  .copy-source-toggle.is-copied .copy-source-toggle-icon {
    color: #58a6ff;
  }
}

[data-theme="dark"] .copy-source-toggle {
  border-color: #484f58;
}
[data-theme="dark"] .copy-source-toggle-icon {
  color: #8b949e;
}
[data-theme="dark"] .copy-source-toggle.is-copied {
  background: rgba(56, 139, 253, 0.18);
  border-color: #58a6ff;
}
[data-theme="dark"] .copy-source-toggle.is-copied .copy-source-toggle-icon {
  color: #58a6ff;
}

[data-theme="light"] .copy-source-toggle {
  border-color: #d0d7de;
}
[data-theme="light"] .copy-source-toggle-icon {
  color: #656d76;
}

@media print {
  .copy-source-toggle {
    display: none;
  }
}