/* ============================================================
   quiz.css - Shared quiz component styles for all module pages.
   Link this file in any module page that uses quiz.js.
   Depends on the CSS custom properties defined in styles.css.
   ============================================================ */

/* ----------------------------------------
   Quiz trigger row
   ---------------------------------------- */
.quiz-trigger-row {
  margin-top: 32px;
}

.btn-quiz {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 20px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(79, 195, 247, 0.3);
  background: rgba(79, 195, 247, 0.07);
  color: var(--blue-accent);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}

.btn-quiz:hover {
  background: rgba(79, 195, 247, 0.13);
  border-color: var(--blue-accent);
  transform: translateY(-1px);
}

/* ----------------------------------------
   Quiz panel + card
   ---------------------------------------- */
.quiz-panel {
  margin-top: 16px;
}

.quiz-card {
  background: rgba(10, 22, 40, 0.8);
  border: 1px solid rgba(79, 195, 247, 0.18);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  animation: quizSlideIn 0.28s ease both;
}

@keyframes quizSlideIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ----------------------------------------
   Card header
   ---------------------------------------- */
.quiz-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}

.quiz-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-accent);
  background: rgba(79, 195, 247, 0.1);
  border: 1px solid rgba(79, 195, 247, 0.2);
  border-radius: 100px;
  padding: 4px 14px;
}

.quiz-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.quiz-close:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

/* ----------------------------------------
   Question text
   ---------------------------------------- */
.quiz-question {
  font-size: 0.975rem;
  color: var(--text-primary);
  line-height: 1.65;
  margin-bottom: 20px;
}

/* ----------------------------------------
   Answer options (MCQ + T/F)
   ---------------------------------------- */
.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 4px;
}

.tf-options {
  flex-direction: row;
}

.quiz-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 11px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
  background: rgba(13, 31, 60, 0.4);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s, color 0.18s;
}

.tf-options .quiz-option {
  flex: 1;
  text-align: center;
}

.quiz-option:not(:disabled):hover {
  border-color: rgba(79, 195, 247, 0.35);
  background: rgba(79, 195, 247, 0.05);
  color: var(--text-primary);
}

.quiz-option.selected {
  border-color: var(--blue-accent);
  background: rgba(79, 195, 247, 0.1);
  color: var(--text-primary);
}

.quiz-option.correct {
  border-color: #4ade80;
  background: rgba(74, 222, 128, 0.08);
  color: #86efac;
}

.quiz-option.incorrect {
  border-color: #f87171;
  background: rgba(248, 113, 113, 0.08);
  color: #fca5a5;
}

.quiz-option:disabled {
  cursor: default;
}

/* ----------------------------------------
   Feedback block
   ---------------------------------------- */
.quiz-feedback {
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-top: 16px;
  font-size: 0.875rem;
  line-height: 1.65;
  animation: quizSlideIn 0.2s ease both;
}

.quiz-feedback.correct-fb {
  background: rgba(74, 222, 128, 0.07);
  border: 1px solid rgba(74, 222, 128, 0.22);
  color: #86efac;
}

.quiz-feedback.incorrect-fb {
  background: rgba(248, 113, 113, 0.07);
  border: 1px solid rgba(248, 113, 113, 0.22);
  color: #fca5a5;
}

.quiz-feedback strong {
  font-weight: 700;
}

/* ----------------------------------------
   Submit button
   ---------------------------------------- */
.quiz-actions {
  margin-top: 20px;
}

.btn-submit-quiz {
  padding: 10px 24px;
  border-radius: var(--radius-md);
  border: none;
  background: linear-gradient(135deg, var(--blue-primary), var(--blue-bright));
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
  box-shadow: 0 0 20px rgba(30, 144, 255, 0.25);
}

.btn-submit-quiz:hover:not(:disabled) {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-submit-quiz:disabled {
  opacity: 0.35;
  cursor: default;
  transform: none;
  box-shadow: none;
}

/* ----------------------------------------
   Responsive
   ---------------------------------------- */
@media (max-width: 600px) {
  .tf-options {
    flex-direction: column;
  }
}