/* Stereo Imaging Test — tool-specific overrides only. Signal generator (no mic/audio capture).
   Also defines the shared-look helper classes this page uses that are not in design-system.css
   (input-label, control-label__val, content-section, faq-question/answer, related-tools-grid/card). */

/* ---- hero caveat note ---- */
.img-warn-note {
  max-width: 820px; margin: var(--space-md) auto 0;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border); border-left: 4px solid var(--color-secondary);
  border-radius: var(--radius-sm); background: rgba(0, 255, 65, 0.04);
  color: var(--color-text-muted); font-size: 0.9rem; line-height: 1.55; text-align: left;
}
.img-warn-note strong { color: var(--color-text); }

/* ---- shared form-label helpers (not in design-system.css) ---- */
.input-label {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: var(--fs-sm); color: var(--color-text-muted);
  margin-bottom: var(--space-xs); font-family: var(--font-mono); gap: var(--space-sm);
}
.control-label__val { font-family: var(--font-mono); color: var(--color-secondary); font-weight: 600; white-space: nowrap; }

/* ---- pan indicator ---- */
.img-canvas {
  display: block; width: 100%; height: 160px; border-radius: var(--radius-sm);
  background: #060a08; border: 1px solid var(--color-border);
}
.img-axislabels {
  display: flex; justify-content: space-between; max-width: 100%;
  margin: 6px 4px var(--space-md); font-family: var(--font-mono);
  font-size: 0.75rem; color: var(--color-text-muted);
}

/* ---- shared top controls ---- */
.img-controls { display: flex; flex-wrap: wrap; gap: var(--space-lg); align-items: flex-end; }
.img-field { flex: 1 1 240px; min-width: 200px; }
.img-select {
  width: 100%; margin-top: 6px; padding: 10px 12px; background: var(--color-bg); color: var(--color-text);
  border: 1px solid var(--color-border); border-radius: var(--radius-sm); font-family: var(--font-mono); font-size: 0.95rem;
}
.img-select:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 2px rgba(0, 255, 65, 0.18); }
.img-range { width: 100%; margin-top: 8px; accent-color: var(--color-primary); }

.img-safe {
  margin-top: var(--space-md); padding: 8px 12px;
  border: 1px solid rgba(255, 180, 60, 0.35); border-left: 4px solid #ffb43c;
  border-radius: var(--radius-sm); background: rgba(255, 180, 60, 0.06);
  color: #ffd9a0; font-size: 0.84rem; line-height: 1.5;
}

/* ---- per-test blocks ---- */
.img-block {
  margin-top: var(--space-lg); padding: var(--space-md);
  border: 1px solid var(--color-border); border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.015);
}
.img-h3 { font-size: 1.05rem; margin: 0 0 var(--space-xs); color: var(--color-primary); }
.img-block__desc { font-size: 0.88rem; color: var(--color-text-muted); line-height: 1.55; margin: 0 0 var(--space-md); }

.img-btns { display: flex; flex-wrap: wrap; gap: 10px; }
.img-btns .btn { margin: 0; }
.img-btns--wide .btn { flex: 1 1 auto; }

/* ---- quiz ---- */
.img-quiz {
  margin-top: var(--space-md); padding: var(--space-md);
  border: 1px solid rgba(0, 255, 65, 0.25); background: rgba(0, 255, 65, 0.05);
  border-radius: var(--radius-sm);
}
.img-quiz__q { font-family: var(--font-mono); font-weight: 700; text-align: center; color: var(--color-primary); margin: 0 0 10px; }
.img-quiz__ans { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.img-quiz__ans .btn { margin: 0; padding-left: 6px; padding-right: 6px; }
.img-quiz__result { margin-top: 12px; min-height: 1em; }
.img-quiz__verdict {
  text-align: center; font-family: var(--font-mono); font-weight: 700; font-size: 1rem;
  padding: 8px 12px; border-radius: var(--radius-sm);
  border: 1px solid var(--color-border); color: var(--color-text);
}
.img-quiz__verdict--ok { border-color: rgba(0, 255, 65, 0.5); background: rgba(0, 255, 65, 0.08); color: var(--color-primary); }
.img-quiz__verdict--bad { border-color: rgba(255, 180, 60, 0.5); background: rgba(255, 180, 60, 0.08); color: #ffd9a0; }

/* ---- status line ---- */
.img-status {
  margin-top: var(--space-lg); padding: 10px 14px;
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  background: rgba(0, 255, 65, 0.03); color: var(--color-text);
  font-family: var(--font-mono); font-size: 0.88rem; line-height: 1.5;
}

/* ---- content section + FAQ (shared look; not in design-system.css) ---- */
.content-section { max-width: 800px; margin: 0 auto var(--space-lg); color: var(--color-text); line-height: 1.7; }
.content-section p { margin-bottom: var(--space-sm); }

.faq-question {
  padding: var(--space-md); cursor: pointer; font-weight: 600; list-style: none;
  display: flex; justify-content: space-between; align-items: center; color: var(--color-text-bright);
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question::after { content: '+'; color: var(--color-primary); font-size: 1.3em; font-weight: 700; }
details[open] .faq-question::after { content: '\2212'; }
.faq-answer {
  padding: 0 var(--space-md) var(--space-md); color: var(--color-text-muted); line-height: 1.75;
  border-top: 1px solid var(--color-border); padding-top: var(--space-sm);
}

/* ---- related tools (shared look; not in design-system.css) ---- */
.related-tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); max-width: 900px; margin: 0 auto; }
.related-tool-card {
  display: block; background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: var(--space-md); text-decoration: none;
  transition: border-color 0.2s, transform 0.2s; text-align: left;
}
.related-tool-card:hover { border-color: var(--color-primary); transform: translateY(-2px); }
.related-tool-card__title { font-family: var(--font-display); font-size: var(--fs-sm); color: var(--color-primary); margin-bottom: var(--space-xs); }
.related-tool-card__desc { font-size: var(--fs-xs); color: var(--color-text-muted); line-height: 1.5; }

/* ---- responsive ---- */
@media (max-width: 640px) {
  .img-quiz__ans { grid-template-columns: repeat(3, 1fr); }
  .related-tools-grid { grid-template-columns: 1fr; }
  .img-canvas { height: 140px; }
}