/* ============================================
   QUIZ SYSTEM - COMPREHENSIVE STYLES
   Mobile-First Responsive Design
   ============================================ */

/* Quiz Page Variables - Matching Theme Colors */
:root {
    --quiz-primary: #4ade80;
    --quiz-secondary: #22c55e;
    --quiz-success: #10b981;
    --quiz-warning: #f59e0b;
    --quiz-danger: #ef4444;
    --quiz-dark: #121212;
    --quiz-gray: #b3b3b3;
    --quiz-light: #1c1c1c;
    --quiz-border: rgba(255,255,255,0.1);
    --quiz-white: #e0e0e0;
    --quiz-bg: #121212;
    --quiz-bg-elev: #1c1c1c;
    --quiz-text: #e0e0e0;
    --quiz-brand-start: #1a4d3a;
    --quiz-brand-end: #22543d;
}

/* ============================================
   QUIZ LISTING PAGE STYLES
   ============================================ */

.quiz-page-header {
    background: linear-gradient(135deg, var(--quiz-brand-start) 0%, var(--quiz-brand-end) 100%);
    padding: 60px 20px;
    text-align: center;
    color: var(--quiz-text);
    position: relative;
    overflow: hidden;
}

.quiz-page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.1); opacity: 0.5; }
}

.quiz-page-header h1 {
    position: relative;
    z-index: 1;
    animation: fadeInDown 0.6s ease-out;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.quiz-categories {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 30px;
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.quiz-cat-btn {
    padding: 8px 16px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.quiz-cat-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.quiz-cat-btn.active {
    background: var(--quiz-primary) !important;
    color: white !important;
    border-color: var(--quiz-primary);
}

/* Quiz Grid */
.quiz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.quiz-card {
    background: var(--quiz-bg-elev);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.4);
    border: 1px solid var(--quiz-border);
    transition: all 0.3s ease;
    position: relative;
    animation: scaleIn 0.5s ease-out;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.quiz-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 28px rgba(74, 222, 128, 0.2);
    border-color: var(--quiz-primary);
}

.quiz-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--quiz-primary), var(--quiz-secondary));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.quiz-card:hover::before {
    transform: scaleX(1);
}

.quiz-thumbnail {
    position: relative;
    overflow: hidden;
}

.quiz-thumbnail img {
    transition: transform 0.5s ease;
}

.quiz-card:hover .quiz-thumbnail img {
    transform: scale(1.1);
}

.quiz-start-btn {
    display: block;
    text-align: center;
    background: var(--quiz-primary);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.quiz-start-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.quiz-start-btn:hover::before {
    width: 300px;
    height: 300px;
}

.quiz-start-btn:hover {
    background: var(--quiz-secondary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 222, 128, 0.4);
}

/* ============================================
   SINGLE QUIZ PAGE STYLES
   ============================================ */

.single-quiz-container {
    animation: fadeIn 0.6s ease-out;
}

.quiz-header {
    background: var(--quiz-bg-elev);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.4);
    border: 1px solid var(--quiz-border);
    margin-bottom: 30px;
    animation: slideInDown 0.6s ease-out;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.quiz-instructions {
    background: rgba(74, 222, 128, 0.1);
    padding: 25px;
    border-radius: 12px;
    border-left: 4px solid var(--quiz-primary);
    margin-bottom: 30px;
    animation: fadeInLeft 0.6s ease-out;
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Progress Bar */
.quiz-progress-container {
    animation: fadeIn 0.8s ease-out;
}

.progress-bar-fill {
    background: linear-gradient(90deg, var(--quiz-primary), var(--quiz-secondary));
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.progress-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Timer */
#quiz-timer {
    animation: pulse-timer 2s ease-in-out infinite;
}

@keyframes pulse-timer {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

#quiz-timer.warning {
    color: var(--quiz-danger) !important;
    animation: shake 0.5s infinite;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Question Blocks */
.question-block {
    background: var(--quiz-bg-elev);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.4);
    border: 1px solid var(--quiz-border);
    margin-bottom: 30px;
    animation: fadeInUp 0.6s ease-out;
    transition: all 0.3s ease;
}

.question-block:hover {
    box-shadow: 0 4px 16px rgba(74, 222, 128, 0.2);
    border-color: var(--quiz-primary);
}

.question-number {
    display: inline-block;
    background: var(--quiz-primary);
    color: white;
    padding: 6px 12px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 15px;
    animation: bounceIn 0.6s ease-out;
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.question-text {
    margin: 0;
    font-size: 20px;
    color: var(--quiz-text);
    line-height: 1.6;
}

/* Answer Options */
.answer-option {
    display: flex;
    align-items: center;
    padding: 15px;
    background: var(--quiz-bg);
    border: 2px solid var(--quiz-border);
    border-radius: 8px;
    margin-bottom: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.answer-option::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 0;
    background: linear-gradient(90deg, rgba(74, 222, 128, 0.1), transparent);
    transition: width 0.3s ease;
}

.answer-option:hover {
    background: rgba(74, 222, 128, 0.1);
    border-color: var(--quiz-primary);
    transform: translateX(5px);
}

.answer-option:hover::before {
    width: 100%;
}

.answer-option input {
    margin-right: 12px;
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--quiz-primary);
}

.answer-option.selected {
    background: rgba(74, 222, 128, 0.15);
    border-color: var(--quiz-primary);
    font-weight: 600;
}

.answer-option.correct {
    background: #d1fae5;
    border-color: var(--quiz-success);
    animation: correctAnswer 0.5s ease-out;
}

.answer-option.incorrect {
    background: #fee2e2;
    border-color: var(--quiz-danger);
    animation: incorrectAnswer 0.5s ease-out;
}

@keyframes correctAnswer {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

@keyframes incorrectAnswer {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Navigation Buttons */
.prev-question-btn,
.next-question-btn,
.start-quiz-button,
.submit-quiz-button,
.retake-quiz-button {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.prev-question-btn:hover,
.next-question-btn:hover,
.start-quiz-button:hover,
.submit-quiz-button:hover,
.retake-quiz-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.prev-question-btn:active,
.next-question-btn:active,
.start-quiz-button:active,
.submit-quiz-button:active,
.retake-quiz-button:active {
    transform: translateY(0);
}

/* Quiz Results */
.quiz-results {
    animation: fadeIn 0.8s ease-out;
}

.result-card {
    background: var(--quiz-bg-elev);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.4);
    border: 1px solid var(--quiz-border);
    margin-bottom: 30px;
    animation: zoomIn 0.6s ease-out;
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.result-score {
    font-size: 72px;
    font-weight: 800;
    text-align: center;
    margin: 20px 0;
    background: linear-gradient(135deg, var(--quiz-primary), var(--quiz-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: countUp 1.5s ease-out;
}

@keyframes countUp {
    from {
        opacity: 0;
        transform: scale(0.5);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.result-badge {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 20px;
    font-weight: 600;
    margin: 10px 5px;
    animation: bounceIn 0.8s ease-out;
}

.result-badge.passed {
    background: #d1fae5;
    color: var(--quiz-success);
    border: 2px solid var(--quiz-success);
}

.result-badge.failed {
    background: #fee2e2;
    color: var(--quiz-danger);
    border: 2px solid var(--quiz-danger);
}

/* Badge Icons */
.badge-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    font-size: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    box-shadow: 0 8px 16px rgba(245, 158, 11, 0.3);
    animation: rotateBadge 2s ease-in-out infinite;
}

@keyframes rotateBadge {
    0%, 100% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(10deg) scale(1.1); }
}

/* Share Buttons */
.share-buttons a {
    transition: all 0.3s ease;
}

.share-buttons a:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* Leaderboard */
.quiz-leaderboard ol li {
    transition: all 0.3s ease;
}

.quiz-leaderboard ol li:hover {
    background: rgba(74, 222, 128, 0.1);
    padding-left: 10px;
}

/* Sidebar */
.quiz-sidebar {
    position: sticky;
    top: 20px;
}

.related-quizzes a {
    transition: all 0.3s ease;
}

.related-quizzes a:hover {
    background: rgba(74, 222, 128, 0.1) !important;
    transform: translateX(5px);
}

/* Loading Spinner */
.quiz-loading {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid rgba(74, 222, 128, 0.3);
    border-top-color: var(--quiz-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Confetti Effect (for perfect score) */
.confetti {
    position: fixed;
    width: 10px;
    height: 10px;
    background: var(--quiz-primary);
    position: absolute;
    animation: confetti-fall 3s linear infinite;
}

@keyframes confetti-fall {
    to {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0;
    }
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
    .quiz-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 20px;
    }
    
    .single-quiz-container > div {
        grid-template-columns: 1fr !important;
    }
    
    .quiz-sidebar {
        position: static;
        margin-top: 30px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .quiz-page-header {
        padding: 40px 20px;
    }
    
    .quiz-page-header h1 {
        font-size: 32px !important;
    }
    
    .quiz-page-header p {
        font-size: 16px !important;
    }
    
    .quiz-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    /* Horizontal card layout on mobile */
    .quiz-card {
        display: flex;
        align-items: center;
        gap: 15px;
        padding: 12px;
    }
    
    .quiz-card:hover {
        transform: translateY(-2px);
    }
    
    .quiz-thumbnail {
        flex: 0 0 100px;
        width: 100px;
        height: 100px;
        border-radius: 8px;
        overflow: hidden;
    }
    
    .quiz-thumbnail img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    
    .quiz-card-content {
        flex: 1;
        min-width: 0;
        padding: 0 !important;
    }
    
    .quiz-card-content h3 {
        font-size: 16px !important;
        margin: 0 0 5px 0 !important;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    
    .quiz-excerpt {
        display: -webkit-box !important;
        -webkit-line-clamp: 2 !important;
        -webkit-box-orient: vertical !important;
        overflow: hidden !important;
        line-clamp: 2 !important;
        margin-bottom: 8px !important;
    }
    
    .quiz-meta {
        flex-wrap: nowrap !important;
        gap: 10px !important;
        font-size: 12px !important;
        margin-bottom: 8px !important;
    }
    
    .quiz-meta span {
        white-space: nowrap;
    }
    
    .quiz-start-btn {
        width: auto !important;
        padding: 8px 16px !important;
        font-size: 14px !important;
        display: inline-block !important;
    }
    
    .quiz-header {
        padding: 20px !important;
    }
    
    .quiz-header h1 {
        font-size: 24px !important;
    }
    
    .quiz-instructions {
        padding: 20px !important;
    }
    
    .question-block {
        padding: 20px !important;
    }
    
    .question-text {
        font-size: 18px !important;
    }
    
    .answer-option {
        padding: 12px !important;
    }
    
    .result-score {
        font-size: 48px !important;
    }
    
    .quiz-info-bar {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 10px !important;
    }
    
    .share-buttons {
        flex-direction: column !important;
    }
    
    .share-buttons a {
        width: 100%;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .quiz-categories {
        flex-direction: column;
        align-items: stretch;
    }
    
    .quiz-cat-btn {
        text-align: center;
    }
    
    .question-navigation {
        flex-direction: column;
        gap: 10px;
    }
    
    .prev-question-btn,
    .next-question-btn {
        width: 100%;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .quiz-sidebar,
    .quiz-top-ad,
    .quiz-inline-ad,
    .quiz-result-ad,
    .sidebar-ad,
    .share-buttons,
    .quiz-email-capture,
    .retake-quiz-button {
        display: none !important;
    }
    
    .quiz-card,
    .question-block,
    .quiz-header {
        box-shadow: none !important;
        border: 1px solid #ddd;
    }
}

/* ============================================
   ACCESSIBILITY ENHANCEMENTS
   ============================================ */

/* Focus States */
.answer-option:focus-within {
    outline: 3px solid var(--quiz-primary);
    outline-offset: 2px;
}

button:focus,
a:focus {
    outline: 3px solid var(--quiz-primary);
    outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .answer-option {
        border-width: 3px;
    }
    
    .quiz-card {
        border: 2px solid var(--quiz-dark);
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark Mode Support (if theme supports it) */
@media (prefers-color-scheme: dark) {
    :root {
        --quiz-dark: #f9fafb;
        --quiz-light: #1f2937;
        --quiz-white: #111827;
        --quiz-border: #374151;
    }
}