/* ============================================================
   EDUVILLE — PRACTICE.CSS
   ============================================================ */

.question-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--r-md);
  padding: 1.2rem 1.3rem;
  margin-bottom: 1rem;
}

.question-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.7rem;
}

.question-num {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--gold);
  font-size: 1rem;
}

.question-diff {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
}
.diff-easy { background: rgba(63, 185, 80, 0.15); color: #7ee787; }
.diff-medium { background: rgba(251, 191, 36, 0.15); color: var(--gold); }
.diff-hard { background: rgba(218, 54, 51, 0.15); color: #ff7b72; }

.question-prompt {
  color: var(--text-primary);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 1rem;
  white-space: pre-wrap;
}

.question-options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.question-option {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--border-default);
  border-radius: var(--r-sm);
  background: var(--bg-primary);
  cursor: pointer;
  transition: all 0.15s ease;
}
.question-option:hover { border-color: var(--edu-blue-light); }
.question-option input { display: none; }
.question-option .option-letter {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
  transition: all 0.15s ease;
}
.question-option .option-text {
  color: var(--text-primary);
  font-size: 0.92rem;
  line-height: 1.4;
}
.question-option input:checked ~ .option-letter {
  background: var(--gold);
  color: var(--edu-blue-dark);
}
.question-option input:checked ~ .option-text {
  color: var(--text-bright);
  font-weight: 500;
}
.question-option.correct {
  border-color: var(--accent-green);
  background: rgba(63, 185, 80, 0.08);
}
.question-option.correct .option-letter {
  background: var(--accent-green);
  color: #fff;
}
.question-option.wrong {
  border-color: var(--accent-red);
  background: rgba(218, 54, 51, 0.08);
}
.question-option.wrong .option-letter {
  background: var(--accent-red);
  color: #fff;
}

.question-feedback {
  margin-top: 0.9rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--border-muted);
}
.fb-line {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
}
.fb-ok { color: #7ee787; }
.fb-no { color: #ff7b72; }
.fb-explain {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.6;
  padding-left: 0.8rem;
  border-left: 3px solid var(--border-default);
}

.result-banner {
  background: linear-gradient(135deg, var(--edu-blue-dark), var(--edu-blue));
  border-radius: var(--r-lg);
  padding: 1.6rem 1.4rem;
  color: #fff;
  border-bottom: 4px solid var(--gold);
  margin-bottom: 1.5rem;
  text-align: center;
}
.result-score {
  font-family: var(--font-head);
  font-size: 3rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 0.3rem;
}
.result-message {
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 0.3rem;
}
.result-detail {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.9rem;
  margin-bottom: 0.6rem;
}
.result-saved {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 1rem;
}
.result-saved a { color: var(--gold); }
.result-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}