/**
 * Academic Assessment — age-adaptive UI tiers (early | elementary | secondary).
 * Pairs with data-aa-ui-mode on :root and .aa-mode--* on body (set by academic-assessment-ui-mode.js).
 */

/* --- Shared question chrome --- */
.aa-question-render {
  --aa-choice-gap: 0.75rem;
  --aa-stem-size: 1rem;
  --aa-stem-weight: 600;
  --aa-choice-minh: 3rem;
  --aa-choice-pad: 0.65rem 1rem;
  --aa-radius-choice: 12px;
}

.aa-stem-text {
  margin: 0 0 1rem;
  font-size: var(--aa-stem-size);
  font-weight: var(--aa-stem-weight);
  line-height: 1.45;
  color: var(--aa-text);
}

.aa-stem-figure {
  margin: 0 0 1.25rem;
  text-align: center;
}

.aa-stem-image {
  max-width: min(100%, 420px);
  height: auto;
  border-radius: 14px;
  border: 1px solid var(--aa-border);
  display: inline-block;
  vertical-align: middle;
  background: #f3f4f6;
}

.aa-image-fallback {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  max-width: min(100%, 420px);
  margin: 0 auto;
  padding: 1rem;
  border-radius: 14px;
  border: 1px dashed var(--aa-border);
  background: #f9fafb;
  color: var(--aa-muted);
  font-size: 0.9rem;
  text-align: center;
  line-height: 1.4;
}

.aa-choices {
  display: grid;
  gap: var(--aa-choice-gap);
  margin-top: 0.5rem;
}

.aa-choice-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  min-height: var(--aa-choice-minh);
  padding: var(--aa-choice-pad);
  border-radius: var(--aa-radius-choice);
  border: 2px solid var(--aa-border);
  background: #fff;
  font: inherit;
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.1s ease;
  color: var(--aa-text);
}

.aa-choice-btn:hover {
  border-color: var(--aa-accent);
  box-shadow: 0 2px 10px rgba(26, 86, 219, 0.12);
}

.aa-choice-btn:focus-visible {
  outline: 3px solid rgba(26, 86, 219, 0.45);
  outline-offset: 2px;
}

.aa-choice-btn:active {
  transform: scale(0.99);
}

.aa-choice-image {
  max-width: 100%;
  max-height: 120px;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 10px;
}

.aa-choice-label {
  font-size: 0.95rem;
  font-weight: 600;
  text-align: center;
  line-height: 1.3;
}

.aa-muted-inline {
  margin: 0;
  color: var(--aa-muted);
  font-size: 0.9rem;
}

.aa-audio-placeholder {
  display: none;
}

/* --- Elementary (default balanced) --- */
.aa-mode--elementary .aa-question-render,
:root[data-aa-ui-mode="elementary"] .aa-question-render {
  --aa-stem-size: 1.02rem;
  --aa-choice-minh: 3.1rem;
}

.aa-choices--elementary {
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.aa-choice-btn--elementary .aa-choice-label {
  font-weight: 600;
}

/* --- Early learner (PreK–2): large, colorful, minimal text emphasis on visuals --- */
.aa-mode--early .aa-question-render,
:root[data-aa-ui-mode="early"] .aa-question-render {
  --aa-stem-size: 1.2rem;
  --aa-stem-weight: 700;
  --aa-choice-gap: 1rem;
  --aa-choice-minh: 5.5rem;
  --aa-choice-pad: 1rem 1.1rem;
  --aa-radius-choice: 18px;
}

.aa-mode--early .aa-stem-text,
:root[data-aa-ui-mode="early"] .aa-stem-text {
  letter-spacing: 0.01em;
}

.aa-mode--early .aa-stem-image,
:root[data-aa-ui-mode="early"] .aa-stem-image {
  max-width: min(100%, 480px);
  border-width: 3px;
  border-color: rgba(26, 86, 219, 0.35);
}

.aa-choices--early {
  grid-template-columns: 1fr;
}

@media (min-width: 520px) {
  .aa-choices--early {
    grid-template-columns: repeat(2, 1fr);
  }
}

.aa-choice-btn--early {
  min-height: 5.75rem;
  font-size: 1.15rem;
  border-width: 3px;
  background: linear-gradient(180deg, #ffffff 0%, #f0f9ff 100%);
  border-color: rgba(59, 130, 246, 0.45);
}

.aa-choice-btn--early:hover {
  background: linear-gradient(180deg, #eff6ff 0%, #dbeafe 100%);
  border-color: var(--aa-accent);
}

.aa-choice-btn--early .aa-choice-label {
  font-size: 1.12rem;
  font-weight: 800;
}

.aa-choice-btn--early .aa-choice-image {
  max-height: 140px;
}

/* --- Secondary (6–12): clean academic --- */
.aa-mode--secondary .aa-question-render,
:root[data-aa-ui-mode="secondary"] .aa-question-render {
  --aa-stem-size: 0.98rem;
  --aa-stem-weight: 600;
  --aa-choice-minh: 2.85rem;
  --aa-choice-pad: 0.55rem 0.85rem;
  --aa-radius-choice: 10px;
}

.aa-mode--secondary .aa-stem-text,
:root[data-aa-ui-mode="secondary"] .aa-stem-text {
  font-weight: 600;
  color: #111827;
}

.aa-choices--secondary {
  grid-template-columns: 1fr;
}

@media (min-width: 600px) {
  .aa-choices--secondary {
    grid-template-columns: repeat(2, 1fr);
  }
}

.aa-choice-btn--secondary {
  flex-direction: row;
  justify-content: flex-start;
  text-align: left;
  gap: 0.75rem;
  border-width: 1px;
  background: #fff;
  box-shadow: none;
}

.aa-choice-btn--secondary .aa-choice-image {
  max-height: 56px;
  max-width: 72px;
  margin-right: 0.25rem;
}

.aa-choice-btn--secondary .aa-choice-label {
  font-size: 0.95rem;
  font-weight: 500;
  text-align: left;
}

.aa-mode--secondary .aa-stem-image,
:root[data-aa-ui-mode="secondary"] .aa-stem-image {
  max-width: min(100%, 360px);
  border-radius: 10px;
}