/* Combining quiz-display.css, modern-quiz.css, and render-quiz-styles.css */

/* Quiz Display Section */
.quiz-dashboard {
  background-color: var(--quiz-background-light);
  border-radius: var(--quiz-border-radius-lg);
  padding: var(--quiz-spacing-lg);
}

.quiz-dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--quiz-spacing-lg);
  flex-wrap: wrap;
}

.quiz-dashboard-header h2 {
  margin: 0;
  color: var(--quiz-primary-color);
}
.music-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 100;
    background: #fff;
    border: 2px solid #007bff;
    color: #007bff;
    padding: 8px 15px;
    border-radius: 30px;
    cursor: pointer;
    font-weight: bold;
    box-shadow: 0 3px 6px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.music-toggle:hover {
    background: #007bff;
    color: #fff;
}
.quiz-filters {
  display: flex;
  gap: var(--quiz-spacing-md);
  flex-wrap: wrap;
  margin: var(--quiz-spacing-md) 0;
}

.filter-group {
  display: flex;
  flex-direction: column;
}

.filter-group label {
  font-size: var(--quiz-font-size-sm);
  margin-bottom: var(--quiz-spacing-xs);
  font-weight: 600;
}

.filter-group select,
.filter-group input {
  padding: 0.5rem;
  border: 1px solid #ddd;
  border-radius: var(--quiz-border-radius-sm);
}

/* Questions & Options Display */
.questions-container {
  margin-top: var(--quiz-spacing-lg);
}

.question {
  background-color: white;
  border-radius: var(--quiz-border-radius-md);
  padding: var(--quiz-spacing-lg);
  margin-bottom: var(--quiz-spacing-lg);
  box-shadow: var(--quiz-shadow-sm);
}

.question h3 {
  margin-top: 0;
  color: var(--quiz-primary-color);
  font-size: var(--quiz-font-size-lg);
  border-bottom: 1px solid #eee;
  padding-bottom: var(--quiz-spacing-sm);
}

.question-content {
  margin-top: var(--quiz-spacing-md);
}

.options {
  margin-top: var(--quiz-spacing-md);
}

.option {
  display: block;
  padding: var(--quiz-spacing-md);
  margin-bottom: var(--quiz-spacing-sm);
  border: 1px solid #eee;
  border-radius: var(--quiz-border-radius-sm);
  cursor: pointer;
  transition: all var(--quiz-transition-fast);
}

.option:hover {
  background-color: rgba(58, 86, 228, 0.05);
  border-color: var(--quiz-primary-color);
}

.option input[type="radio"] {
  margin-right: var(--quiz-spacing-sm);
}

/* Quiz Navigation */
.quiz-navigation {
  display: flex;
  justify-content: space-between;
  margin-top: var(--quiz-spacing-lg);
}

/* Quiz Results Display */
.quiz-results {
  background-color: white;
  border-radius: var(--quiz-border-radius-md);
  padding: var(--quiz-spacing-lg);
  margin-top: var(--quiz-spacing-lg);
  box-shadow: var(--quiz-shadow-md);
}

.result-summary {
  text-align: center;
  margin-bottom: var(--quiz-spacing-lg);
}

.result-score {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--quiz-primary-color);
}

.result-grade {
  display: inline-block;
  font-size: 1.5rem;
  font-weight: bold;
  margin: var(--quiz-spacing-md);
  padding: var(--quiz-spacing-sm) var(--quiz-spacing-md);
  border-radius: 50%;
  background-color: var(--quiz-accent-color);
  color: white;
}

.result-message {
  font-size: var(--quiz-font-size-lg);
  margin: var(--quiz-spacing-md) 0;
}

/* Modern Quiz Elements */
.question-progress {
  display: flex;
  margin-bottom: var(--quiz-spacing-lg);
}

.progress-step {
  flex: 1;
  height: 4px;
  background-color: #eee;
  margin: 0 2px;
}

.progress-step.active {
  background-color: var(--quiz-primary-color);
}

.progress-step.correct {
  background-color: var(--quiz-success);
}

.progress-step.incorrect {
  background-color: var(--quiz-error);
}

/* Feedback animation */
@keyframes fadeInOut {
  0% { opacity: 0; transform: translateY(-20px); }
  20% { opacity: 1; transform: translateY(0); }
  80% { opacity: 1; }
  100% { opacity: 0; }
}

.feedback-container {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
}

.feedback-message {
  padding: var(--quiz-spacing-md) var(--quiz-spacing-lg);
  border-radius: var(--quiz-border-radius-md);
  background-color: white;
  box-shadow: var(--quiz-shadow-lg);
  animation: fadeInOut 2s forwards;
}

/* Quiz Navigation Spacing */
.quiz-navigation,
.quiz-nav,
.quiz-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--quiz-spacing-lg) var(--quiz-spacing-md);
  margin-top: var(--quiz-spacing-xl);
  background-color: #f5f5f5;
  border-radius: var(--quiz-border-radius-md);
  gap: var(--quiz-spacing-md);
}

.quiz-navigation button,
.quiz-nav button,
.quiz-controls button {
  flex: 0 1 auto;
  padding: 0.6rem 1.2rem;
  background-color: var(--quiz-primary-color);
  color: white;
  border: none;
  border-radius: var(--quiz-border-radius-md);
  cursor: pointer;
  font-weight: 600;
  transition: all var(--quiz-transition-fast);
}

.quiz-navigation button:hover,
.quiz-nav button:hover,
.quiz-controls button:hover {
  background-color: #333;
  transform: translateY(-2px);
  box-shadow: var(--quiz-shadow-md);
}

.quiz-navigation button:disabled,
.quiz-nav button:disabled,
.quiz-controls button:disabled {
  background-color: #ccc;
  cursor: not-allowed;
  transform: none;
}

.feedback-incorrect {
  border-left: 4px solid var(--quiz-error);
}

/* ========== COMPREHENSIVE QUESTION STYLING - 4 LAYERS ========== */

/* LAYER 1: Question Container */
.question-wrapper,
.quiz-question {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  border: 2px solid #e0e0e0;
  border-radius: var(--quiz-border-radius-lg);
  padding: var(--quiz-spacing-xl);
  margin-bottom: var(--quiz-spacing-xl);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.question-wrapper:hover {
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
  border-color: #333;
}

/* LAYER 2: Question Text */
.question-text,
.quiz-question-text,
.question h3,
.question-title {
  font-size: var(--quiz-font-size-xl);
  font-weight: 700;
  color: var(--quiz-text-dark);
  margin: 0 0 var(--quiz-spacing-lg) 0;
  padding: var(--quiz-spacing-md);
  border-bottom: 3px solid #333;
  line-height: 1.6;
}

.question-number,
.question-counter {
  display: inline-block;
  background-color: var(--quiz-primary-color);
  color: var(--quiz-text-light);
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  font-size: var(--quiz-font-size-sm);
  margin-bottom: var(--quiz-spacing-md);
  font-weight: 600;
}

/* LAYER 3: Answer Options - Generic fallback (overridden by specific types) */
.options-container {
  display: flex;
  flex-direction: column;
  gap: var(--quiz-spacing-md);
}

/* Old fallback rules - superseded by question-type-specific styling */
/*
.option,
.quiz-option,
.answer-option {
  display: flex;
  align-items: center;
  padding: var(--quiz-spacing-md) var(--quiz-spacing-lg);
  border: 2px solid #ddd;
  border-radius: var(--quiz-border-radius-md);
  cursor: pointer;
  background-color: white;
  transition: all 0.2s ease;
}

.option:hover,
.quiz-option:hover,
.answer-option:hover {
  border-color: #333;
  background-color: #f0f0f0;
  transform: translateX(5px);
}

.option input[type="radio"],
.option input[type="checkbox"],
.quiz-option input,
.answer-option input {
  margin-right: var(--quiz-spacing-md);
  width: 20px;
  height: 20px;
  cursor: pointer;
}

.option-text,
.option-label,
.quiz-option-text {
  flex: 1;
  font-size: var(--quiz-font-size-md);
  color: var(--quiz-text-dark);
  line-height: 1.5;
}

.option.selected,
.quiz-option.selected,
.option input:checked + .option-text {
  background-color: #e3f2fd;
  border-color: #333;
  font-weight: 600;
}
*/

/* LAYER 4: Feedback & Results */
.feedback-section,
.answer-feedback,
.result-feedback {
  margin-top: var(--quiz-spacing-lg);
  padding: var(--quiz-spacing-lg);
  border-radius: var(--quiz-border-radius-md);
  border-left: 5px solid;
}

.feedback-correct,
.answer-correct,
.feedback-success {
  background-color: #e8f5e9;
  border-left-color: #4caf50;
  color: #2e7d32;
}

.feedback-incorrect,
.answer-incorrect,
.feedback-error {
  background-color: #ffebee;
  border-left-color: #f44336;
  color: #c62828;
}

.feedback-explanation,
.feedback-text {
  margin-top: var(--quiz-spacing-md);
  font-size: var(--quiz-font-size-md);
  line-height: 1.6;
}

.correct-answer,
.user-answer,
.selected-answer {
  padding: var(--quiz-spacing-md);
  margin: var(--quiz-spacing-sm) 0;
  border-radius: var(--quiz-border-radius-sm);
  background-color: rgba(255, 255, 255, 0.5);
  border: 1px solid currentColor;
}

/* Correct answer indicator */
.correct-answer {
  background-color: #c8e6c9;
  color: #2e7d32;
  font-weight: 600;
}

/* User's wrong answer */
.user-answer {
  background-color: #ffcccc;
  color: #c62828;
  font-weight: 600;
}

/* ========== QUESTION TYPES - COMPREHENSIVE 4-LAYER STYLING ========== */

/* ===== MULTIPLE CHOICE (MCQ) ===== */
.multiple-choice-question {
  display: flex;
  flex-direction: column;
}

/* MCQ Layer 1: Container */
.multiple-choice-question {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  border: 2px solid #e0e0e0;
  border-radius: var(--quiz-border-radius-lg);
  padding: var(--quiz-spacing-lg);
  margin-bottom: var(--quiz-spacing-xl);
}

/* MCQ Layer 2: Question Text */
.multiple-choice-question .question-text,
.multiple-choice-question h4 {
  border-bottom: 3px solid #1976d2;
  color: #1976d2;
  margin: 0 0 var(--quiz-spacing-lg) 0;
  padding-bottom: var(--quiz-spacing-md);
  font-size: var(--quiz-font-size-lg);
}

/* MCQ Layer 3: Options with boxes and hover - Column layout with spacing */
.multiple-choice-question .options-container {
  display: flex;
  flex-direction: column;
  gap: var(--quiz-spacing-lg);
  margin: var(--quiz-spacing-lg) 0 var(--quiz-spacing-xl) 0;
  padding: 0;
  background-color: transparent;
  border-radius: 0;
  border: none;
}

.multiple-choice-question .option-item {
  display: flex;
  align-items: center;
  padding: var(--quiz-spacing-lg) var(--quiz-spacing-xl);
  border: 3px solid #d0d7e8;
  border-radius: var(--quiz-border-radius-lg);
  background-color: #ffffff;
  cursor: pointer;
  transition: all 0.3s ease;
  min-height: 60px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.multiple-choice-question .option-item:hover {
  border-color: #ff6b6b;
  background-color: #fff5f5;
  transform: translateX(8px);
  box-shadow: 0 6px 16px rgba(255, 107, 107, 0.3);
}

.multiple-choice-question .option-item.selected {
  background-color: #e3f2fd;
  border-color: #1976d2;
  font-weight: 600;
  box-shadow: 0 6px 16px rgba(25, 118, 210, 0.3);
}

/* Glow effect for correct answers (Green) */
.multiple-choice-question .option-item.correct-answer {
  border-color: #4caf50;
  background-color: #f1f8e9;
  animation: correctGlow 0.6s ease-out;
  box-shadow: 0 0 20px rgba(76, 175, 80, 0.6), 0 0 40px rgba(76, 175, 80, 0.3);
}

/* Glow effect for wrong answers (Red) */
.multiple-choice-question .option-item.wrong-answer {
  border-color: #f44336;
  background-color: #ffebee;
  animation: wrongGlow 0.6s ease-out;
  box-shadow: 0 0 20px rgba(244, 67, 54, 0.6), 0 0 40px rgba(244, 67, 54, 0.3);
}

/* Animations for glow effects */
@keyframes correctGlow {
  0% {
    box-shadow: 0 0 0px rgba(76, 175, 80, 0);
  }
  50% {
    box-shadow: 0 0 30px rgba(76, 175, 80, 0.8), 0 0 50px rgba(76, 175, 80, 0.4);
  }
  100% {
    box-shadow: 0 0 20px rgba(76, 175, 80, 0.6), 0 0 40px rgba(76, 175, 80, 0.3);
  }
}

@keyframes wrongGlow {
  0% {
    box-shadow: 0 0 0px rgba(244, 67, 54, 0);
  }
  50% {
    box-shadow: 0 0 30px rgba(244, 67, 54, 0.8), 0 0 50px rgba(244, 67, 54, 0.4);
  }
  100% {
    box-shadow: 0 0 20px rgba(244, 67, 54, 0.6), 0 0 40px rgba(244, 67, 54, 0.3);
  }
}

.multiple-choice-question .option-item input[type="radio"] {
  width: 24px;
  height: 24px;
  margin-right: var(--quiz-spacing-lg);
  cursor: pointer;
  accent-color: #1976d2;
  flex-shrink: 0;
}

.multiple-choice-question .option-item label {
  font-size: var(--quiz-font-size-md);
  color: #333;
  line-height: 1.6;
  cursor: pointer;
  flex: 1;
  margin: 0;
  font-weight: 500;
}

/* MCQ Layer 4: Feedback */
.multiple-choice-question .feedback-section {
  margin-top: var(--quiz-spacing-lg);
  padding: var(--quiz-spacing-lg);
  border-radius: var(--quiz-border-radius-md);
  border-left: 5px solid;
}

.multiple-choice-question .feedback-correct {
  background-color: #e8f5e9;
  border-left-color: #4caf50;
  color: #2e7d32;
}

.multiple-choice-question .feedback-incorrect {
  background-color: #ffebee;
  border-left-color: #f44336;
  color: #c62828;
}

/* ===== TRUE/FALSE ===== */
.true-false-question {
  display: flex;
  flex-direction: column;
  background: linear-gradient(135deg, #ffffff 0%, #f9f9f9 100%);
  border: 2px solid #e0e0e0;
  border-radius: var(--quiz-border-radius-lg);
  padding: var(--quiz-spacing-lg);
  margin-bottom: var(--quiz-spacing-xl);
}

/* True/False Layer 2: Question Text */
.true-false-question .question-text,
.true-false-question h4 {
  border-bottom: 3px solid #ff9800;
  color: #ff9800;
  margin: 0 0 var(--quiz-spacing-lg) 0;
  padding-bottom: var(--quiz-spacing-md);
  font-size: var(--quiz-font-size-lg);
}

/* True/False Layer 3: Options (Column layout with boxes and hover) */
.true-false-question .options-container {
  display: flex;
  flex-direction: column;
  gap: var(--quiz-spacing-lg);
  margin: var(--quiz-spacing-lg) 0 var(--quiz-spacing-xl) 0;
  padding: 0;
  background-color: transparent;
  border-radius: 0;
  border: none;
}

.true-false-question .option-item {
  display: flex;
  align-items: center;
  padding: var(--quiz-spacing-lg) var(--quiz-spacing-xl);
  border: 3px solid #ffb366;
  border-radius: var(--quiz-border-radius-lg);
  background-color: #ffffff;
  cursor: pointer;
  transition: all 0.3s ease;
  min-height: 60px;
  box-shadow: 0 2px 8px rgba(255, 152, 0, 0.1);
}

.true-false-question .option-item:hover {
  border-color: #ff6b6b;
  background-color: #fff5f5;
  transform: translateX(8px);
  box-shadow: 0 6px 16px rgba(255, 107, 107, 0.3);
}

/* Glow effect for correct answers (Green) */
.true-false-question .option-item.correct-answer {
  border-color: #4caf50;
  background-color: #f1f8e9;
  animation: correctGlow 0.6s ease-out;
  box-shadow: 0 0 20px rgba(76, 175, 80, 0.6), 0 0 40px rgba(76, 175, 80, 0.3);
}

/* Glow effect for wrong answers (Red) */
.true-false-question .option-item.wrong-answer {
  border-color: #f44336;
  background-color: #ffebee;
  animation: wrongGlow 0.6s ease-out;
  box-shadow: 0 0 20px rgba(244, 67, 54, 0.6), 0 0 40px rgba(244, 67, 54, 0.3);
}

.true-false-question .option-item.selected {
  background-color: #fff8e1;
  border-color: #ff9800;
  font-weight: 600;
  box-shadow: 0 6px 16px rgba(255, 152, 0, 0.3);
}

.true-false-question .option-item input[type="radio"] {
  width: 24px;
  height: 24px;
  margin-right: var(--quiz-spacing-lg);
  cursor: pointer;
  accent-color: #ff9800;
  flex-shrink: 0;
}

.true-false-question .option-item label {
  font-size: var(--quiz-font-size-lg);
  font-weight: 600;
  color: #333;
  cursor: pointer;
  margin: 0;
  flex: 1;
}

/* True/False Layer 4: Feedback */
.true-false-question .feedback-section {
  margin-top: var(--quiz-spacing-lg);
  padding: var(--quiz-spacing-lg);
  border-radius: var(--quiz-border-radius-md);
  border-left: 5px solid;
}

.true-false-question .feedback-correct {
  background-color: #e8f5e9;
  border-left-color: #4caf50;
  color: #2e7d32;
}

.true-false-question .feedback-incorrect {
  background-color: #ffebee;
  border-left-color: #f44336;
  color: #c62828;
}

/* ===== MULTIPLE SELECT ===== */
.multiple-select-question {
  display: flex;
  flex-direction: column;
  background: linear-gradient(135deg, #ffffff 0%, #f5f5f5 100%);
  border: 2px solid #e0e0e0;
  border-radius: var(--quiz-border-radius-lg);
  padding: var(--quiz-spacing-lg);
  margin-bottom: var(--quiz-spacing-xl);
}

/* Multiple Select Layer 2: Question Text */
.multiple-select-question .question-text,
.multiple-select-question h4 {
  border-bottom: 3px solid #7b1fa2;
  color: #7b1fa2;
  margin: 0 0 var(--quiz-spacing-lg) 0;
  padding-bottom: var(--quiz-spacing-md);
  font-size: var(--quiz-font-size-lg);
}

/* Multiple Select Layer 3: Checkboxes */
.multiple-select-question .options-container {
  display: flex;
  flex-direction: column;
  gap: var(--quiz-spacing-md);
  margin: var(--quiz-spacing-lg) 0 var(--quiz-spacing-xl) 0;
  padding: var(--quiz-spacing-lg);
  background-color: #f9f5fe;
  border-radius: var(--quiz-border-radius-md);
  border: 1px solid #e6d9f5;
}

.multiple-select-question .option-item {
  display: flex;
  align-items: center;
  padding: var(--quiz-spacing-md) var(--quiz-spacing-lg);
  border: 2px solid #d0c4e4;
  border-radius: var(--quiz-border-radius-md);
  background-color: white;
  cursor: pointer;
  transition: all 0.3s ease;
}

.multiple-select-question .option-item:hover {
  border-color: #7b1fa2;
  background-color: #f3e5f5;
  transform: translateX(8px);
  box-shadow: 0 4px 12px rgba(123, 31, 162, 0.15);
}

.multiple-select-question .option-item.selected {
  background-color: #f3e5f5;
  border-color: #7b1fa2;
  font-weight: 600;
}

.multiple-select-question .option-item input[type="checkbox"] {
  width: 22px;
  height: 22px;
  margin-right: var(--quiz-spacing-lg);
  cursor: pointer;
  accent-color: #7b1fa2;
}

.multiple-select-question .option-item label {
  font-size: var(--quiz-font-size-md);
  color: #333;
  line-height: 1.5;
  cursor: pointer;
  flex: 1;
  margin: 0;
}

/* Multiple Select Layer 4: Feedback */
.multiple-select-question .feedback-section {
  margin-top: var(--quiz-spacing-lg);
  padding: var(--quiz-spacing-lg);
  border-radius: var(--quiz-border-radius-md);
  border-left: 5px solid;
}

.multiple-select-question .feedback-correct {
  background-color: #e8f5e9;
  border-left-color: #4caf50;
  color: #2e7d32;
}

.multiple-select-question .feedback-incorrect {
  background-color: #ffebee;
  border-left-color: #f44336;
  color: #c62828;
}

/* ===== MATCHING/PAIRS ===== */
/* === MATCH PAIRS SECTION MOVED TO classic-template.php ===*/


/* === DRAG & DROP SECTION MOVED TO classic-template.php ===*/


/* === ANSWER FILLING (TEXT INPUT) SECTION MOVED TO classic-template.php ===*/


/* ========== RESPONSIVE DESIGN - ALL QUESTION TYPES ========== */
@media (max-width: 768px) {
  /* General responsive adjustments */
  .question-item,
  .multiple-choice-question,
  .true-false-question,
  .multiple-select-question,
  .match-pair-question,
  .dragdrop-question,
  .fill-blanks-question,
  .short-answer-question,
  .text-input-question {
    padding: var(--quiz-spacing-lg);
    margin-bottom: var(--quiz-spacing-lg);
  }
  
  .question-text,
  .question-item h4 {
    font-size: var(--quiz-font-size-lg);
  }
  
  .option-item {
    padding: var(--quiz-spacing-md) var(--quiz-spacing-lg);
    flex-direction: row;
  }
  
  /* MCQ responsive */
  .multiple-choice-question .options-container {
    padding: var(--quiz-spacing-md);
  }
  
  /* True/False responsive - stack on mobile */
  .true-false-question .options-container {
    grid-template-columns: 1fr;
    gap: var(--quiz-spacing-md);
  }
  
  .true-false-question .option-item {
    min-height: 60px;
  }
  
  /* Multiple Select responsive */
  .multiple-select-question .options-container {
    padding: var(--quiz-spacing-md);
  }
  
  /* Matching responsive - stack on mobile */
  .match-pair-question .match-pairs-container {
    padding: var(--quiz-spacing-md);
    flex-direction: column;
  }
  
  .match-pair-question .left-items,
  .match-pair-question .right-items {
    gap: var(--quiz-spacing-md);
    width: 100%;
  }
  
  .match-pair-question .match-item {
    padding: var(--quiz-spacing-md);
    min-height: 50px;
    font-size: var(--quiz-font-size-base);
  }
  
  .match-pair-question .user-matches {
    width: 100%;
    padding: var(--quiz-spacing-md);
  }
  
  .match-pair-question .user-match {
    padding: var(--quiz-spacing-md);
    font-size: var(--quiz-font-size-base);
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--quiz-spacing-sm);
  }
  
  /* Drag & Drop responsive - stack on mobile */
  .dragdrop-question .dragdrop-container {
    padding: var(--quiz-spacing-md);
  }
  
  .dragdrop-question .dragdrop-items {
    grid-template-columns: 1fr;
    gap: var(--quiz-spacing-md);
  }
  
  .dragdrop-question .dragdrop-item {
    min-height: 60px;
  }
  
  /* Answer filling responsive */
  .fill-blanks-question .answer-input-container,
  .short-answer-question .answer-input-container,
  .text-input-question .answer-input-container {
    padding: var(--quiz-spacing-md);
  }
  
  .answer-input {
    padding: var(--quiz-spacing-md);
    font-size: var(--quiz-font-size-base);
  }
  
  /* Navigation responsive */
  .quiz-navigation,
  .quiz-nav,
  .quiz-controls {
    flex-direction: column;
    gap: var(--quiz-spacing-md);
    padding: var(--quiz-spacing-md);
  }
  
  .quiz-navigation button,
  .quiz-nav button,
  .quiz-controls button {
    width: 100%;
  }
  
  .quiz-dashboard-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .quiz-filters {
    width: 100%;
    margin-top: var(--quiz-spacing-md);
  }
  
  .filter-group {
    width: 100%;
  }
}

/* Extra Small Screens (Phones - under 480px) */
@media (max-width: 480px) {
  /* Match pairs - optimize for small phone screens */
  .match-pair-question {
    padding: var(--quiz-spacing-md);
  }
  
  .match-pair-question .match-pairs-container {
    grid-template-columns: 1fr;
    gap: var(--quiz-spacing-md);
    padding: var(--quiz-spacing-md);
  }
  
  .match-pair-question .left-items,
  .match-pair-question .right-items {
    width: 100%;
  }
  
  .match-pair-question .match-item {
    padding: var(--quiz-spacing-md);
    min-height: 45px;
    font-size: 0.9em;
  }
  
  .match-pair-question .user-match {
    flex-direction: column;
    padding: var(--quiz-spacing-md);
    gap: var(--quiz-spacing-sm);
  }
  
  .match-pair-question .user-match .match-left,
  .match-pair-question .user-match .match-right {
    width: 100%;
  }
  
  .match-pair-question .user-match .remove-match {
    width: 100%;
    padding: 8px;
  }
  
  /* Drag & Drop - optimize for small screens */
  .dragdrop-question {
    padding: var(--quiz-spacing-md);
  }
  
  .dragdrop-question .dragdrop-items {
    grid-template-columns: 1fr;
    gap: var(--quiz-spacing-md);
  }
  
  /* Question text sizing */
  .question-text,
  .question-item h4 {
    font-size: var(--quiz-font-size-md);
  }
}

/* ===== FOUR-LAYER ARCHITECTURE VISUAL DESIGN ===== */

/* Outer Container - Layer 4: Outer Shell */
.four-layer-architecture {
  max-width: 1000px;
  margin: 40px auto;
  font-family: var(--quiz-font-family, 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif);
}

/* Layer 4: Outer Shell (Yellow/Gold) */
.layer-4-outer {
  background-color: #FFF8DC;
  border: 3px solid #FFD700;
  border-radius: 15px;
  padding: 30px;
  gap: 20px;
  box-shadow: 0 8px 20px rgba(255, 215, 0, 0.3);
}

.layer-4-label {
  font-size: 14px;
  font-weight: bold;
  color: #B8860B;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Layer 3: Database/Storage (Blue) */
.layer-3-database {
  background-color: #E6F3FF;
  border: 3px solid #0066CC;
  border-radius: 12px;
  padding: 25px;
  margin-bottom: 20px;
  gap: 15px;
  box-shadow: 0 6px 15px rgba(0, 102, 204, 0.2);
}

.layer-3-label {
  font-size: 13px;
  font-weight: bold;
  color: #003399;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.layer-3-content {
  font-size: 12px;
  line-height: 1.8;
  color: #003366;
}

/* Layer 2: JavaScript/Frontend (Green) */
.layer-2-frontend {
  background-color: #E6F9F0;
  border: 3px solid #00A86B;
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 15px;
  gap: 12px;
  box-shadow: 0 5px 12px rgba(0, 168, 107, 0.2);
}

.layer-2-label {
  font-size: 12px;
  font-weight: bold;
  color: #006B3F;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.layer-2-content {
  font-size: 11px;
  line-height: 1.7;
  color: #004D2C;
}

/* Layer 1: CSS/Styling (Red/Pink) */
.layer-1-styling {
  background-color: #FFE6F0;
  border: 3px solid #FF1493;
  border-radius: 8px;
  padding: 15px;
  gap: 10px;
  box-shadow: 0 4px 10px rgba(255, 20, 147, 0.2);
}

.layer-1-label {
  font-size: 11px;
  font-weight: bold;
  color: #C71585;
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.layer-1-content {
  font-size: 10px;
  line-height: 1.6;
  color: #8B0A50;
}

/* ===== HORIZONTAL 4-LAYER DESIGN ===== */

.four-layer-horizontal {
  display: flex;
  gap: 25px;
  max-width: 1400px;
  margin: 40px auto;
  flex-wrap: wrap;
}

.layer-card {
  flex: 1;
  min-width: 200px;
  border-radius: 12px;
  padding: 25px;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.layer-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.layer-card-title {
  font-size: 14px;
  font-weight: bold;
  margin-bottom: 15px;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-bottom: 2px solid;
  padding-bottom: 10px;
}

.layer-card-content {
  font-size: 12px;
  line-height: 1.8;
}

.layer-card-item {
  margin-bottom: 10px;
  padding: 8px 0;
  border-bottom: 1px dotted rgba(0, 0, 0, 0.1);
}

.layer-card-item:last-child {
  border-bottom: none;
}

/* Layer 4 Horizontal Card */
.layer-4-card {
  background-color: #FFF8DC;
  border: 3px solid #FFD700;
  color: #8B6914;
}

.layer-4-card .layer-card-title {
  color: #B8860B;
  border-bottom-color: #FFD700;
}

.layer-4-card .layer-card-content {
  color: #654321;
}

/* Layer 3 Horizontal Card */
.layer-3-card {
  background-color: #E6F3FF;
  border: 3px solid #0066CC;
  color: #003366;
}

.layer-3-card .layer-card-title {
  color: #003399;
  border-bottom-color: #0066CC;
}

.layer-3-card .layer-card-content {
  color: #003366;
}

/* Layer 2 Horizontal Card */
.layer-2-card {
  background-color: #E6F9F0;
  border: 3px solid #00A86B;
  color: #004D2C;
}

.layer-2-card .layer-card-title {
  color: #006B3F;
  border-bottom-color: #00A86B;
}

.layer-2-card .layer-card-content {
  color: #004D2C;
}

/* Layer 1 Horizontal Card */
.layer-1-card {
  background-color: #FFE6F0;
  border: 3px solid #FF1493;
  color: #8B0A50;
}

.layer-1-card .layer-card-title {
  color: #C71585;
  border-bottom-color: #FF1493;
}

.layer-1-card .layer-card-content {
  color: #8B0A50;
}

/* ===== STACKED 4-LAYER DESIGN (Full Width) ===== */

.four-layer-stacked {
  max-width: 100%;
  margin: 40px auto;
}

.layer-stacked {
  padding: 20px;
  margin-bottom: 18px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.layer-stacked-title {
  font-size: 16px;
  font-weight: bold;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  display: flex;
  align-items: center;
}

.layer-stacked-number {
  display: inline-block;
  width: 35px;
  height: 35px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: white;
  margin-right: 12px;
  font-size: 18px;
}

.layer-stacked-content {
  font-size: 13px;
  line-height: 1.9;
  margin-left: 47px;
}

/* Layer 4 Stacked */
.layer-stacked-4 {
  background-color: #FFF8DC;
  border-left: 5px solid #FFD700;
  color: #654321;
}

.layer-stacked-4 .layer-stacked-number {
  background-color: #FFD700;
  color: #8B6914;
}

.layer-stacked-4 .layer-stacked-title {
  color: #8B6914;
}

/* Layer 3 Stacked */
.layer-stacked-3 {
  background-color: #E6F3FF;
  border-left: 5px solid #0066CC;
  color: #003366;
}

.layer-stacked-3 .layer-stacked-number {
  background-color: #0066CC;
}

.layer-stacked-3 .layer-stacked-title {
  color: #003399;
}

/* Layer 2 Stacked */
.layer-stacked-2 {
  background-color: #E6F9F0;
  border-left: 5px solid #00A86B;
  color: #004D2C;
}

.layer-stacked-2 .layer-stacked-number {
  background-color: #00A86B;
}

.layer-stacked-2 .layer-stacked-title {
  color: #006B3F;
}

/* Layer 1 Stacked */
.layer-stacked-1 {
  background-color: #FFE6F0;
  border-left: 5px solid #FF1493;
  color: #8B0A50;
}

.layer-stacked-1 .layer-stacked-number {
  background-color: #FF1493;
}

.layer-stacked-1 .layer-stacked-title {
  color: #C71585;
}

/* ===== RESPONSIVE 4-LAYER DESIGN ===== */

@media (max-width: 768px) {
  .four-layer-horizontal {
    flex-direction: column;
    gap: 15px;
  }

  .layer-card {
    min-width: 100%;
  }

  .layer-card-title {
    font-size: 13px;
  }

  .layer-card-content {
    font-size: 11px;
  }

  .layer-4-outer {
    padding: 20px;
  }

  .layer-3-database {
    padding: 18px;
    margin-bottom: 15px;
  }

  .layer-2-frontend {
    padding: 15px;
    margin-bottom: 12px;
  }

  .layer-1-styling {
    padding: 12px;
  }
}

@media (max-width: 480px) {
  .four-layer-architecture,
  .four-layer-stacked {
    margin: 20px 10px;
  }

  .layer-4-outer {
    padding: 15px;
    border-width: 2px;
  }

  .layer-3-database {
    padding: 12px;
    border-width: 2px;
    margin-bottom: 10px;
  }

  .layer-2-frontend {
    padding: 10px;
    border-width: 2px;
    margin-bottom: 8px;
  }

  .layer-1-styling {
    padding: 8px;
    border-width: 2px;
  }

  .layer-4-label,
  .layer-3-label,
  .layer-2-label,
  .layer-1-label {
    font-size: 10px;
  }

  .layer-3-content,
  .layer-2-content,
  .layer-1-content {
    font-size: 10px;
  }

  .layer-stacked-number {
    width: 28px;
    height: 28px;
    font-size: 14px;
    margin-right: 8px;
  }

  .layer-stacked-content {
    margin-left: 36px;
    font-size: 11px;
  }
}