/* ---------- Swinging-flashlight lab (js/pupil-reflex/ui/rapd-lab.js) ---------- */
.rpl {
  display: flex; flex-direction: column; gap: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px 20px;
}
.rpl[hidden] { display: none; }
.rpl-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.rpl-title { margin: 0; font-family: "Source Serif 4", Georgia, serif; font-size: 16px; font-weight: 600; color: var(--text); }
.rpl-sub { margin: 2px 0 0; font-size: 12.5px; color: var(--text-soft); }
.rpl-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.rpl-wide { grid-column: 1 / -1; }
@media (max-width: 760px) { .rpl-grid { grid-template-columns: minmax(0, 1fr); } }

.rpl-card {
  display: flex; flex-direction: column; gap: 10px; min-width: 0;
  padding: 12px 14px;
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  background: var(--surface-sunken);
}
.rpl-card[hidden] { display: none; }
.rpl-card-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.rpl-card h4 {
  margin: 0; font-size: 11.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--accent-strong);
}
.rpl-src { font-size: 11px; color: var(--text-faint); }
.rpl-note { margin: 0; font-size: 12px; line-height: 1.55; color: var(--text-soft); }
.rpl-note:empty { display: none; }
.rpl-muted { margin: 0; font-size: 12px; color: var(--text-soft); }
.rpl-good { margin: 0; font-size: 12.5px; color: var(--accent-strong); }
.rpl-warn { margin: 0; font-size: 12.5px; color: var(--warn-strong); }

.rpl-seg { flex-wrap: wrap; }
.rpl-seg .ct-seg-btn.is-active,
.rpl-seg .ct-seg-btn[aria-checked="true"] { background: var(--surface); color: var(--accent-strong); box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08); }
.rpl-seg-small .ct-seg-btn { font-size: 11px; }

.rpl-readout { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.rpl-value { font-family: var(--ct-mono, ui-monospace, SFMono-Regular, Menlo, monospace); font-size: 22px; font-weight: 600; letter-spacing: -0.02em; color: var(--text); }
.rpl-band { font-size: 12px; font-weight: 600; color: var(--text-soft); }
.rpl-band[data-tone="note"] { color: var(--accent-strong); }
.rpl-band[data-tone="warn"],
.rpl-band[data-tone="alert"] { color: var(--warn-strong); }

.rpl-slider-row { display: flex; align-items: center; gap: 8px; }
.rpl-slider-row input[type="range"] { flex: 1 1 auto; min-width: 0; accent-color: var(--accent-strong); }
.rpl-slider-row input[type="range"]:disabled { opacity: 0.4; }

.rpl-chips, .rpl-steps { display: flex; flex-wrap: wrap; gap: 5px; }
.rpl-chip, .rpl-step {
  min-height: 28px; padding: 3px 10px;
  border: 1px solid var(--border); border-radius: 999px;
  background: var(--surface);
  font-family: var(--ct-mono, ui-monospace, SFMono-Regular, Menlo, monospace); font-size: 11.5px; font-weight: 600;
  color: var(--text); cursor: pointer;
}
.rpl-chip:hover, .rpl-step:hover:not(:disabled) { border-color: var(--accent); }
.rpl-chip.is-active, .rpl-step.is-active,
.rpl-chip[aria-pressed="true"] { border-color: var(--accent-strong); background: var(--accent-strong); color: #fff; }
.rpl-step:disabled { opacity: 0.45; cursor: not-allowed; }
.rpl-inf { min-width: 36px; font-size: 15px; }

.rpl-field { display: flex; flex-direction: column; gap: 4px; font-size: 11.5px; font-weight: 600; color: var(--text-soft); }
.rpl-field select {
  min-height: 32px; padding: 4px 8px; max-width: 100%;
  border: 1px solid var(--border); border-radius: 8px;
  background: var(--surface); color: var(--text); font-size: 12.5px;
}

.rpl-chart-wrap { position: relative; width: 100%; }
#rplChart { display: block; width: 100%; height: 150px; border-radius: 10px; background: var(--surface); }
.rpl-legend { margin: 0; display: flex; align-items: center; flex-wrap: wrap; gap: 6px 10px; font-size: 11px; color: var(--text-soft); }
.rpl-key { display: inline-block; width: 14px; height: 10px; border-radius: 3px; vertical-align: middle; margin-right: -4px; }
.rpl-key-od { background: color-mix(in srgb, var(--accent) 30%, transparent); }
.rpl-key-os { background: color-mix(in srgb, var(--warn-strong) 30%, transparent); }
.rpl-key-line { height: 2px; background: var(--text); }

.rpl-finding { display: flex; flex-direction: column; gap: 6px; font-size: 13px; line-height: 1.55; color: var(--text); }
.rpl-finding p { margin: 0; }

.rpl-endpoint:empty { display: none; }
.rpl-endpoint { display: flex; flex-direction: column; gap: 8px; }
.rpl-table-wrap { overflow-x: auto; }
.rpl-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.rpl-table th, .rpl-table td { padding: 4px 6px; text-align: left; border-bottom: 1px solid var(--border-soft); white-space: nowrap; }
.rpl-table th { font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-faint); }
.rpl-table td:first-child { font-family: var(--ct-mono, ui-monospace, SFMono-Regular, Menlo, monospace); }
.rpl-table tr.is-best td { color: var(--accent-strong); font-weight: 700; }

.rpl-confounds summary { cursor: pointer; font-size: 12.5px; font-weight: 600; color: var(--text-soft); }
.rpl-confounds ul { margin: 6px 0 0; padding-left: 18px; display: flex; flex-direction: column; gap: 6px; font-size: 12px; line-height: 1.55; color: var(--text-soft); }

/* Neutral-density filter held over an eye zone */
.rpl-nd-overlay {
  position: absolute; inset: 14% 10%;
  border-radius: 12px;
  background: rgba(20, 22, 24, var(--rpl-nd-alpha, 0.5));
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.35), 0 4px 14px rgba(0, 0, 0, 0.25);
  pointer-events: none;
  z-index: 6;
}
.rpl-nd-label {
  position: absolute; left: 8px; top: 6px;
  padding: 1px 6px; border-radius: 6px;
  background: rgba(255, 255, 255, 0.85); color: #1b2124;
  font: 600 11px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
}