/* ===================== TEST / QUIZ PAGE ===================== */

.test-header .header-inner { justify-content: space-between; }
.test-back-link {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: color 160ms var(--ease);
}
.test-back-link:hover { color: var(--color-primary); }

.quiz-section { padding: var(--space-8) 0; }
.quiz-container { max-width: 760px; }
.quiz-container-narrow { max-width: 620px; }

#quiz-intro .section-title { margin-top: var(--space-3); }
#quiz-intro .section-lead { margin-top: var(--space-4); margin-bottom: var(--space-7); }

/* ---------- Grade picker ---------- */
.grade-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-4);
}
.grade-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: var(--space-6) var(--space-3);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: transform 180ms var(--ease), box-shadow 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}
.grade-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.grade-card:active { transform: translateY(0); }
.grade-num { font-size: 2rem; font-weight: 800; color: var(--color-primary); line-height: 1; }
.grade-label { font-size: 0.85rem; color: var(--color-text-muted); font-weight: 600; }

/* ---------- Progress ---------- */
.quiz-progress { margin-bottom: var(--space-6); }
.quiz-progress-track {
  height: 8px;
  border-radius: var(--radius-pill);
  background: var(--color-bg-alt);
  overflow: hidden;
  margin-bottom: var(--space-3);
}
.quiz-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--color-primary);
  border-radius: var(--radius-pill);
  transition: width 260ms var(--ease);
}
.quiz-progress-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

/* ---------- Question card ---------- */
.question-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-7) var(--space-6);
  box-shadow: var(--shadow-sm);
  animation: quiz-fade-in 260ms var(--ease);
}
@keyframes quiz-fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.question-text {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: var(--space-6);
}
.question-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.option-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  text-align: left;
  padding: 14px 18px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  font-family: var(--font-base);
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--color-text);
  cursor: pointer;
  transition: border-color 160ms var(--ease), background 160ms var(--ease), transform 160ms var(--ease);
}
.option-btn:hover { border-color: var(--color-primary-light); background: var(--color-primary-tint); }
.option-btn:active { transform: scale(0.99); }
.option-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  background: #fff;
  border: 1.5px solid var(--color-border);
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--color-primary);
}

/* ---------- Contact gate ---------- */
.contact-gate-panel { max-width: 100%; }

/* ---------- Results ---------- */
.result-summary { text-align: center; margin-bottom: var(--space-8); }
.result-summary .btn { margin-top: var(--space-6); }
.result-score {
  font-size: 3.4rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin: var(--space-3) 0 var(--space-4);
}
.result-message {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 46ch;
  margin-inline: auto;
}

.result-breakdown { display: flex; flex-direction: column; gap: var(--space-4); margin-bottom: var(--space-7); }
.result-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  background: var(--color-surface);
}
.result-item-head { display: flex; gap: var(--space-3); align-items: flex-start; margin-bottom: var(--space-3); }
.result-icon {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.result-icon svg { width: 15px; height: 15px; }
.result-item.is-correct .result-icon { background: rgba(31, 174, 107, 0.14); color: var(--color-success); }
.result-item.is-wrong .result-icon { background: rgba(229, 72, 77, 0.12); color: var(--color-danger); }
.result-item-q { font-weight: 700; font-size: 0.98rem; }
.result-item-answers { font-size: 0.88rem; color: var(--color-text-muted); margin-bottom: var(--space-2); }
.result-item-answers .is-wrong-text { color: var(--color-danger); text-decoration: line-through; }
.result-item-answers .is-correct-text { color: var(--color-success); font-weight: 700; }
.result-item-explain { font-size: 0.88rem; color: var(--color-text-muted); }

.quiz-restart { display: flex; margin-inline: auto; }

@media (max-width: 640px) {
  .question-card { padding: var(--space-5) var(--space-4); }
  .result-score { font-size: 2.6rem; }
}