/* ── Shared Selection Bar (Pill Collector) ── */
.parent-selection-bar {
  display: none;
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: min(760px, calc(100% - 32px));
  max-width: calc(100% - 32px);
  margin-bottom: max(12px, env(safe-area-inset-bottom, 0px));
  padding: 10px 14px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  /* Liquid glass pill shape - bright white frosted glass */
  background: color-mix(in srgb, var(--c-light) 45%, transparent);
  backdrop-filter: blur(2px) saturate(var(--saturation));
  -webkit-backdrop-filter: blur(2px) saturate(var(--saturation));
  border: 1px solid color-mix(in srgb, var(--c-light) 60%, transparent);
  border-radius: 99em;
  /* Elevated shadow with more depth */
  box-shadow:
    inset 0 1px 1px color-mix(in srgb, var(--c-light) 80%, transparent),
    inset 0 -1px 1px color-mix(in srgb, var(--c-dark) 8%, transparent),
    0 2px 8px color-mix(in srgb, var(--c-dark) 8%, transparent),
    0 6px 20px color-mix(in srgb, var(--c-dark) 10%, transparent),
    0 12px 28px color-mix(in srgb, var(--c-dark) 6%, transparent);
  z-index: 900;
  font-family: var(--font-sans);
}

.parent-selection-bar.visible {
  display: flex;
}

.parent-selection-bar-text {
  font-size: .85rem;
  color: var(--text-2);
  font-family: var(--font-mono);
}

.parent-selection-bar-text strong {
  color: var(--text);
  font-weight: 600;
}

.parent-selection-bar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.parent-selection-bar button {
  font-family: var(--font-sans);
  font-size: .78rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 99px;
  padding: 8px 16px;
  border: none;
  /* Engraved appearance - recessed into the glass surface */
  background: color-mix(in srgb, var(--c-dark) 8%, transparent);
  color: var(--text-2);
  box-shadow:
    inset 0 1px 2px color-mix(in srgb, var(--c-dark) 20%, transparent),
    inset 0 -1px 1px color-mix(in srgb, var(--c-light) 40%, transparent),
    0 1px 0 color-mix(in srgb, var(--c-light) 30%, transparent);
  transition: background 200ms ease, color 200ms ease, box-shadow 200ms ease;
}

.parent-selection-bar button:hover {
  background: color-mix(in srgb, var(--c-dark) 12%, transparent);
  color: var(--text);
}

.parent-selection-bar button:active {
  box-shadow:
    inset 0 2px 4px color-mix(in srgb, var(--c-dark) 25%, transparent),
    inset 0 -1px 1px color-mix(in srgb, var(--c-light) 20%, transparent),
    0 0 0 transparent;
}

.parent-selection-bar .parent-selection-start {
  background: color-mix(in srgb, var(--accent) 85%, transparent);
  color: #fff;
  box-shadow:
    inset 0 1px 2px color-mix(in srgb, var(--c-dark) 30%, transparent),
    inset 0 -1px 1px color-mix(in srgb, var(--c-light) 30%, transparent),
    0 1px 0 color-mix(in srgb, var(--c-light) 20%, transparent);
}

.parent-selection-bar .parent-selection-start:hover {
  background: color-mix(in srgb, var(--accent) 92%, transparent);
  filter: brightness(1.05);
}

.parent-selection-bar .parent-selection-start:active {
  box-shadow:
    inset 0 2px 4px color-mix(in srgb, var(--c-dark) 35%, transparent),
    inset 0 -1px 1px color-mix(in srgb, var(--c-light) 15%, transparent),
    0 0 0 transparent;
}

/* SRS start button — amber tint to distinguish from quiz start */
.parent-selection-bar .parent-selection-srs {
  background: color-mix(in srgb, #b45309 80%, transparent);
  color: #fff;
  box-shadow:
    inset 0 1px 2px color-mix(in srgb, var(--c-dark) 30%, transparent),
    inset 0 -1px 1px color-mix(in srgb, var(--c-light) 30%, transparent),
    0 1px 0 color-mix(in srgb, var(--c-light) 20%, transparent);
}

.parent-selection-bar .parent-selection-srs:hover {
  background: color-mix(in srgb, #b45309 90%, transparent);
  filter: brightness(1.05);
}

.parent-selection-bar .parent-selection-srs:active {
  box-shadow:
    inset 0 2px 4px color-mix(in srgb, var(--c-dark) 35%, transparent),
    inset 0 -1px 1px color-mix(in srgb, var(--c-light) 15%, transparent),
    0 0 0 transparent;
}