/* ========================================
   MODERN QUIZ LAYOUT STYLES
   ======================================== */

/* Main Layout - 3 Column Grid */
.modern-quiz-layout {
    display: grid;
    grid-template-columns: 300px 1fr 320px;
    gap: 20px;
    min-height: 600px;
    animation: fadeIn 0.5s ease;
}

/* ========================================
   LEFT SIDEBAR
   ======================================== */
.quiz-sidebar-left {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.quiz-info-card,
.quiz-timer-card,
.quiz-settings-card,
.quiz-progress-card,
.quiz-actions-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.quiz-title-sidebar {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.4;
}

.quiz-mode {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
}

/* Timer Card */
.quiz-timer-card {
    text-align: center;
}

.timer-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 10px;
    font-weight: 500;
}

.timer-display {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
    font-family: 'Courier New', monospace;
    letter-spacing: 2px;
}

/* Settings Card */
.quiz-settings-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.setting-item {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
    padding: 8px;
    border-radius: 8px;
    transition: var(--transition);
}

.setting-item:hover {
    background: rgba(102, 126, 234, 0.05);
}

.setting-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.setting-item span {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
}

/* Progress Card */
.quiz-progress-card h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.progress-section {
    display: flex;
    gap: 12px;
}

.progress-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.progress-info {
    flex: 1;
}

.progress-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.progress-stats {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.progress-stats strong {
    color: var(--primary-color);
    font-weight: 700;
}

.progress-bar-wrapper {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-bar-fill {
    height: 100%;
    background: var(--bg-gradient);
    border-radius: 10px;
    transition: width 0.4s ease;
    box-shadow: 0 0 10px rgba(102, 126, 234, 0.5);
}

.progress-details {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
}

.correct-count {
    color: var(--success-color);
    font-weight: 600;
}

.wrong-count {
    color: var(--danger-color);
    font-weight: 600;
}

/* Actions Card */
.quiz-actions-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-back-quiz,
.btn-submit-quiz {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-back-quiz {
    background: var(--card-bg);
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
}

.btn-back-quiz:hover {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.btn-submit-quiz {
    background: var(--bg-gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-submit-quiz:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

/* ========================================
   MAIN CONTENT
   ======================================== */
.quiz-main-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.question-display {
    flex: 1;
}

.question-card-modern {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 30px;
    box-shadow: var(--shadow-md);
    border: 2px solid var(--border-color);
    min-height: 400px;
}

.question-header-modern {
    margin-bottom: 20px;
}

.question-label {
    display: inline-block;
    background: var(--bg-gradient);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 14px;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.question-text-modern {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.7;
    margin-bottom: 25px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.03), rgba(118, 75, 162, 0.03));
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.options-modern {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.option-modern {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 18px 20px;
    border: 2px solid var(--border-color);
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(255, 255, 255, 0.7);
    position: relative;
    overflow: hidden;
}

.option-modern::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 5px;
    height: 100%;
    background: var(--bg-gradient);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform 0.3s ease;
}

.option-modern:hover {
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.9);
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.15);
}

.option-modern:hover::before {
    transform: scaleY(1);
}

.option-modern.selected {
    border-color: var(--primary-color);
    border-width: 3px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.12), rgba(118, 75, 162, 0.12));
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.25);
    transform: translateX(8px);
}

.option-modern.selected::before {
    transform: scaleY(1);
}

.option-modern input[type="radio"] {
    appearance: none;
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    border: 2.5px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
    background: white;
    flex-shrink: 0;
}

.option-modern input[type="radio"]:hover {
    border-color: var(--primary-color);
    transform: scale(1.1);
}

.option-modern input[type="radio"]:checked {
    border-color: var(--primary-color);
    background: white;
}

.option-modern input[type="radio"]:checked::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--bg-gradient);
    animation: radioPopIn 0.3s ease;
}

@keyframes radioPopIn {
    0% {
        transform: translate(-50%, -50%) scale(0);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.3);
    }
    100% {
        transform: translate(-50%, -50%) scale(1);
    }
}

.option-modern .option-letter {
    font-weight: 700;
    color: var(--primary-color);
    min-width: 28px;
    font-size: 16px;
}

.option-modern.selected .option-letter {
    transform: scale(1.1);
}

.option-modern .option-text {
    flex: 1;
    font-size: 16px;
    color: var(--text-primary);
    line-height: 1.6;
}

/* Navigation Buttons */
.quiz-navigation {
    display: flex;
    justify-content: space-between;
    gap: 15px;
}

.btn-nav {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-nav:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
}

.btn-nav:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-prev {
    flex: 1;
}

.btn-next {
    flex: 1;
}

/* ========================================
   RIGHT SIDEBAR - QUESTION GRID
   ======================================== */
.quiz-sidebar-right {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    max-height: calc(100vh - 140px);
    overflow-y: auto;
    position: sticky;
    top: 20px;
}

.grid-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border-color);
}

.question-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 8px;
}

.question-grid-item {
    aspect-ratio: 1;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: white;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.question-grid-item:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.2);
}

.question-grid-item.active {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.question-grid-item.answered {
    background: linear-gradient(135deg, #48bb78, #38a169);
    color: white;
    border-color: var(--success-color);
}

.question-grid-item.answered.active {
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-color: var(--primary-color);
}

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

/* Tablet */
@media (max-width: 1200px) {
    .modern-quiz-layout {
        grid-template-columns: 280px 1fr 280px;
        gap: 15px;
    }
    
    .question-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (max-width: 1024px) {
    .modern-quiz-layout {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .quiz-sidebar-left {
        order: 2;
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .quiz-info-card,
    .quiz-timer-card {
        flex: 1;
        min-width: 250px;
    }
    
    .quiz-settings-card,
    .quiz-progress-card {
        flex: 1;
        min-width: 250px;
    }
    
    .quiz-actions-card {
        width: 100%;
        flex-direction: row;
    }
    
    .quiz-main-content {
        order: 1;
    }
    
    .quiz-sidebar-right {
        order: 3;
        max-height: none;
        position: static;
    }
    
    .question-grid {
        grid-template-columns: repeat(8, 1fr);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .modern-quiz-layout {
        gap: 15px;
    }
    
    .quiz-sidebar-left {
        flex-direction: column;
    }
    
    .quiz-info-card,
    .quiz-timer-card,
    .quiz-settings-card,
    .quiz-progress-card {
        min-width: 100%;
    }
    
    .quiz-actions-card {
        flex-direction: column;
    }
    
    .question-card-modern {
        padding: 20px;
        min-height: 300px;
    }
    
    .question-text-modern {
        font-size: 16px;
        padding: 15px;
    }
    
    .option-modern {
        padding: 15px;
    }
    
    .option-modern .option-text {
        font-size: 15px;
    }
    
    .quiz-navigation {
        flex-direction: column;
    }
    
    .btn-nav {
        width: 100%;
    }
    
    .question-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

@media (max-width: 480px) {
    .question-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: 6px;
    }
    
    .question-grid-item {
        font-size: 13px;
    }
    
    .timer-display {
        font-size: 24px;
    }
    
    .question-label {
        font-size: 13px;
        padding: 6px 16px;
    }
}

/* ========================================
   DARK MODE ADJUSTMENTS
   ======================================== */
body.dark-mode .option-modern {
    background: rgba(30, 30, 40, 0.5);
}

body.dark-mode .option-modern:hover {
    background: rgba(30, 30, 40, 0.7);
}

body.dark-mode .option-modern input[type="radio"] {
    background: rgba(30, 30, 40, 0.8);
    border-color: var(--border-color);
}

body.dark-mode .option-modern input[type="radio"]:checked {
    background: rgba(30, 30, 40, 0.8);
}

body.dark-mode .question-grid-item {
    background: rgba(30, 30, 40, 0.8);
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scrollbar for question grid */
.quiz-sidebar-right::-webkit-scrollbar {
    width: 6px;
}

.quiz-sidebar-right::-webkit-scrollbar-track {
    background: var(--border-color);
    border-radius: 3px;
}

.quiz-sidebar-right::-webkit-scrollbar-thumb {
    background: var(--bg-gradient);
    border-radius: 3px;
}

.quiz-sidebar-right::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #764ba2, #667eea);
}