/* Sandboxed-iframe viewer chrome for any-page/index.html, split out of its inline
   <style> for readability. Depends on the :root tokens from ../panel.css (--bg, --text,
   --text-dim, --border, --accent, --shadow), which index.html already links. */

/* --- Viewer (URL loaded) --- */
#viewerWrap { position: relative; flex: 1; display: flex; }
#frame { flex: 1; width: 100%; border: 0; background: var(--bg); }

.loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: var(--bg);
  color: var(--text-dim);
  font-size: 0.9rem;
  transition: opacity 220ms ease;
}
.spinner {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* --- Floating corner controls --- */
.corner {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 10px;
}
.icon-btn {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(17, 20, 27, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, opacity 160ms ease,
    background 160ms ease;
}
.icon-btn svg { width: 18px; height: 18px; }
.icon-btn:hover { border-color: var(--accent); transform: translateY(-1px); background: rgba(22, 26, 35, 0.9); }
.icon-btn.extra { opacity: 0; pointer-events: none; transform: translateX(10px) scale(0.9); }
.corner.open .icon-btn.extra { opacity: 1; pointer-events: auto; transform: translateX(0) scale(1); }

.icon-btn::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: rgba(11, 13, 18, 0.95);
  color: var(--text);
  padding: 5px 9px;
  border-radius: 6px;
  border: 1px solid var(--border);
  font-size: 0.74rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 140ms ease, transform 140ms ease;
}
.icon-btn:hover::after,
.icon-btn:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}