.panel-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 20;
}

.panel-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.panel {
  position: fixed;
  top: 0;
  right: 0;
  width: min(420px, 92vw);
  height: 100dvh;
  background: rgba(10, 14, 20, 0.92);
  backdrop-filter: blur(14px);
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  transform: translateX(105%);
  transition: transform 0.35s ease;
  z-index: 21;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel.open {
  transform: translateX(0);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.1rem 0.6rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}

.tabs {
  display: flex;
  gap: 0.4rem;
}

.tab {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-dim);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab.active {
  color: var(--bg-3);
  background: var(--accent);
  border-color: var(--accent);
}

.tab-panel {
  padding: 1.1rem;
  overflow-y: auto;
  flex: 1;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.82rem;
  color: var(--text-dim);
}

.field-grow {
  flex: 1;
}

.field input,
.field select,
.field textarea {
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg-2);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  padding: 0.5rem 0.6rem;
}

/* Native <select> popups render with the OS's own light/dark chrome, driven
   by color-scheme (set on :root) rather than these colors — this pair keeps
   the closed control itself readable and matches option colors when the
   browser does honor them (Chromium/Firefox on most platforms). */
.field select option {
  background: var(--bg-2);
  color: var(--text);
}

.field input[type="color"] {
  padding: 0.2rem;
  height: 2.2rem;
  cursor: pointer;
}

.checkbox-field {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: var(--text);
  cursor: pointer;
}

.checkbox-field input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.section {
  margin-top: 1.4rem;
  padding-top: 1.1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.section h4 {
  margin: 0 0 0.4rem;
  font-size: 0.9rem;
}

.hint-text {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin: 0 0 0.6rem;
  line-height: 1.4;
}

.hint-text.warn {
  color: #ffb066;
}

.instance-origin {
  font-family: "Courier New", monospace;
  font-size: 0.72rem;
}

.code-input {
  width: 100%;
  font-family: "Courier New", monospace;
  font-size: 0.78rem;
  resize: vertical;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.btn {
  font-family: inherit;
  font-size: 0.82rem;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  transition: background 0.2s ease;
}

.btn:hover {
  background: rgba(255, 255, 255, 0.14);
}

.btn-accent {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg-3);
  font-weight: 600;
  margin-top: 0.4rem;
}

.btn-danger {
  border-color: rgba(255, 107, 107, 0.4);
  color: #ff8080;
}