/* ============================================================
   Toggle Panel — fixed top-right controls
   theme · language · font mode
   Quiet, editorial chrome: hairline border, no shadow blob.
   ============================================================ */

.q-panel {
  position: fixed;
  top: 16px;
  right: 24px;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  font: 11px/1 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  -webkit-font-smoothing: antialiased;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.q-panel__group {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 0 6px;
  border-left: 1px solid var(--border);
}

.q-panel__group:first-child {
  border-left: 0;
  padding-left: 4px;
}

.q-panel__label {
  font-size: 9px;
  color: var(--muted);
  margin-right: 4px;
  opacity: 0.6;
}

.q-btn {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  padding: 6px 10px;
  border-radius: 999px;
  cursor: pointer;
  transition:
    background var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease);
}

.q-btn:hover {
  color: var(--fg);
}

.q-btn[aria-pressed="true"],
.q-btn.is-active {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}

.q-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* On small screens, collapse the labels but keep the buttons */
@media (max-width: 540px) {
  .q-panel {
    top: 12px;
    right: 12px;
    font-size: 10px;
  }
  .q-panel__label { display: none; }
  .q-btn { padding: 6px 8px; }
}