/* static/css/pages/drill-results.css */
.drill-results-page {
    min-height: 100vh;
    background: var(--background);
    color: var(--text-dark);
}

/* Header */
.results-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.back-button {
    flex-shrink: 0;
}

.drill-title-section {
    flex: 1;
    text-align: center;
}

.drill-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.drill-subtitle {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.language-badge {
    background: var(--primary-blue);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.difficulty-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    color: white;
}

.difficulty-beginner { background: var(--success); }
.difficulty-intermediate { background: var(--warning); color: var(--text-dark); }
.difficulty-advanced { background: var(--error); }
.difficulty-expert { 
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    background: var(--success);
    color: white;
}

.header-actions {
    flex-shrink: 0;
    display: flex;
    gap: 1rem;
}

/* Results Summary */
.results-summary {
    padding: 2rem 0;
    background: linear-gradient(135deg, rgba(42, 104, 255, 0.1), rgba(124, 97, 255, 0.1));
}

.summary-card {
    background: var(--surface);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border);
}

.summary-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.summary-header h2 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
}

.completion-time {
    color: var(--text-soft);
    font-size: 0.875rem;
}

.performance-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--background);
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--primary-blue);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-soft);
    margin-bottom: 0.5rem;
}

.stat-change {
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    display: inline-block;
}

.performance-bar {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.bar-label {
    font-size: 0.875rem;
    color: var(--text-soft);
    margin-bottom: 0.75rem;
}

.bar-container {
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    position: relative;
    margin-bottom: 2rem;
}

.bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-purple));
    border-radius: 4px;
    width: 0%;
    transition: width 1s ease;
}

.bar-markers {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-soft);
}

.marker {
    position: relative;
    padding-top: 1.5rem;
}

.marker::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 10px;
    background: var(--border);
}

.current-level {
    text-align: center;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin-top: 1rem;
}

/* Tabs */
.results-tabs {
    padding: 2rem 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.tabs-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tab {
    padding: 0.75rem 1.5rem;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-soft);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tab:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.tab.active {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

.tabs-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.search-box {
    position: relative;
}

.search-box input {
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-dark);
    width: 200px;
    font-size: 0.875rem;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-soft);
}

.filter-dropdown select {
    padding: 0.75rem 1rem;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-dark);
    font-size: 0.875rem;
    cursor: pointer;
}

/* Tab Content */
.tab-content {
    padding: 2rem 0;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* Questions Review */
.questions-review {
    min-height: 400px;
}

.loading-questions {
    text-align: center;
    padding: 4rem 0;
    color: var(--text-soft);
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border);
    border-top: 3px solid var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Question Item */
.question-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease;
}

.question-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.question-item.correct {
    border-left: 4px solid var(--success);
}

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

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.question-number {
    font-weight: 600;
    color: var(--text-dark);
}

.question-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.question-status.correct {
    color: var(--success);
}

.question-status.incorrect {
    color: var(--error);
}

.question-content {
    margin-bottom: 1.5rem;
}

.question-description {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.question-description pre,
.question-description code {
    font-family: 'Space Mono', monospace;
    background: var(--background);
    border-radius: 8px;
    padding: 1rem;
    overflow-x: auto;
    margin: 0.5rem 0;
}

.options-review {
    display: grid;
    gap: 0.75rem;
}

.option-review {
    padding: 1rem;
    border-radius: 8px;
    border: 2px solid transparent;
    background: var(--background);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.option-review.selected {
    border-color: var(--primary-blue);
    background: rgba(42, 104, 255, 0.1);
}

.option-review.correct {
    border-color: var(--success);
    background: rgba(43, 203, 119, 0.1);
}

.option-review.incorrect {
    border-color: var(--error);
    background: rgba(255, 90, 95, 0.1);
}

.option-marker {
    width: 24px;
    height: 24px;
    min-width: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 50%;
    font-weight: 600;
    font-size: 0.75rem;
    color: var(--text-soft);
}

.option-review.selected .option-marker {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

.option-review.correct .option-marker {
    background: var(--success);
    color: white;
    border-color: var(--success);
}

.option-content {
    flex: 1;
    line-height: 1.5;
}

.question-explanation {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: var(--background);
    border-radius: 8px;
    border-left: 4px solid var(--accent-purple);
}

.explanation-title {
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--accent-purple);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.explanation-content {
    line-height: 1.6;
    color: var(--text-dark);
}

/* Leaderboard */
.leaderboard-section {
    background: var(--surface);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid var(--border);
}

.leaderboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.leaderboard-header h3 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
}

.participant-count {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-soft);
    font-size: 0.875rem;
}

.leaderboard-container {
    display: grid;
    gap: 2rem;
}

.leaderboard-table {
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.leaderboard-table table {
    width: 100%;
    border-collapse: collapse;
}

.leaderboard-table thead {
    background: var(--background);
}

.leaderboard-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-soft);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.leaderboard-table tbody tr {
    border-bottom: 1px solid var(--border);
    transition: background-color 0.3s ease;
}

.leaderboard-table tbody tr:hover {
    background: var(--background);
}

.leaderboard-table tbody tr.current-user {
    background: rgba(42, 104, 255, 0.1);
    font-weight: 600;
}

.leaderboard-table td {
    padding: 1rem;
    color: var(--text-dark);
}

.leaderboard-table .rank-cell {
    font-weight: 700;
    font-size: 1.125rem;
}

.leaderboard-table .user-cell {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar-small {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary-blue);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-score-cell {
    font-weight: 600;
    color: var(--primary-blue);
}

.user-time-cell {
    color: var(--text-soft);
    font-size: 0.875rem;
}

.dio-change-cell {
    font-weight: 600;
}

.dio-change-cell.positive {
    color: var(--success);
}

.dio-change-cell.negative {
    color: var(--error);
}

.loading-leaderboard {
    text-align: center;
    padding: 2rem;
    color: var(--text-soft);
}

/* User Position Card */
.user-position-card {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-purple));
    border-radius: 12px;
    padding: 1.5rem;
    color: white;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.user-rank-badge {
    font-size: 2rem;
    font-weight: 700;
    min-width: 60px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.user-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.user-details {
    flex: 1;
}

.user-name {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.user-score-display {
    font-size: 0.875rem;
    opacity: 0.9;
}

.user-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.user-stats .stat {
    text-align: center;
}

.user-stats .stat-label {
    font-size: 0.75rem;
    opacity: 0.8;
    margin-bottom: 0.25rem;
}

.user-stats .stat-value {
    font-size: 1.125rem;
    font-weight: 600;
}

/* Analytics */
.analytics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.analytics-card {
    background: var(--surface);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border);
}

.analytics-card h4 {
    margin: 0 0 1.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1rem;
}

.chart-container {
    height: 250px;
    position: relative;
}

/* Comparison */
.comparison-section {
    background: var(--surface);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid var(--border);
}

.comparison-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.comparison-header h3 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.comparison-card {
    background: var(--background);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    border: 1px solid var(--border);
}

.comparison-title {
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-soft);
    font-size: 1rem;
}

.comparison-metrics {
    display: grid;
    gap: 1rem;
}

.comparison-metric {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--surface);
    border-radius: 8px;
}

.metric-label {
    font-size: 0.875rem;
    color: var(--text-soft);
}

.metric-value {
    font-weight: 600;
    color: var(--text-dark);
}

.metric-value.positive {
    color: var(--success);
}

.metric-value.negative {
    color: var(--error);
}

.comparison-chart {
    height: 400px;
    background: var(--background);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border);
}

/* Action Section */
.action-section {
    padding: 2rem 0;
    background: var(--surface);
    border-top: 1px solid var(--border);
}

.action-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--surface);
    border-radius: 16px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-soft);
    cursor: pointer;
    line-height: 1;
}

.modal-body {
    padding: 1.5rem;
}

.share-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.share-preview {
    background: var(--background);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border);
}

.preview-card {
    background: var(--surface);
    border-radius: 8px;
    padding: 1.5rem;
    border: 1px solid var(--border);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.preview-title {
    font-weight: 600;
    color: var(--text-dark);
}

.preview-score {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.preview-body p {
    margin: 0.5rem 0;
    color: var(--text-dark);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .performance-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tabs-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .tabs-actions {
        flex-direction: column;
    }
    
    .search-box input {
        width: 100%;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
    }
    
    .share-options {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .user-position-card {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .user-info {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .performance-stats {
        grid-template-columns: 1fr;
    }
    
    .analytics-grid {
        grid-template-columns: 1fr;
    }
}
/* static/css/pages/drill-results.css */
.drill-results-page {
    min-height: 100vh;
    background: var(--background);
}

/* Results Header */
.results-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: var(--space-xl) 0;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.drill-title-section {
    flex: 1;
    text-align: center;
}

.drill-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--text-dark);
}

.drill-subtitle {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* Results Summary */
.results-summary {
    padding: var(--space-2xl) 0;
}

.summary-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-lg);
}

.summary-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

.performance-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.stat-item {
    text-align: center;
    padding: var(--space-lg);
    background: var(--background);
    border-radius: var(--radius-md);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--space-xs);
}

.stat-label {
    color: var(--text-soft);
    font-size: 0.9rem;
    margin-bottom: var(--space-xs);
}

.stat-change {
    font-size: 1rem;
    font-weight: 500;
}

/* Questions Review */
.question-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-lg);
    border: 2px solid transparent;
}

.question-card.correct {
    border-color: var(--success);
}

.question-card.incorrect {
    border-color: var(--error);
}

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border);
}

.question-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.question-number {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
}

.question-time {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--text-soft);
    font-size: 0.9rem;
}

.question-status {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
}

.question-status.correct {
    background: rgba(43, 203, 119, 0.1);
    color: var(--success);
}

.question-status.incorrect {
    background: rgba(255, 90, 95, 0.1);
    color: var(--error);
}

.question-score {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
}

.question-body {
    margin-bottom: var(--space-xl);
}

.question-description {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-dark);
    margin-bottom: var(--space-xl);
}

.question-description pre {
    background: var(--background);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--space-md) 0;
}

.question-description code {
    background: var(--background);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-family: 'Space Mono', monospace;
    font-size: 0.9em;
}

.options-grid {
    display: grid;
    gap: var(--space-md);
}

.option {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    background: var(--background);
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    transition: all var(--transition-normal);
}

.option-content {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    flex: 1;
}

.option-letter {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--surface);
    border-radius: var(--radius-sm);
    font-weight: 600;
    color: var(--text-dark);
    flex-shrink: 0;
}

.option-text {
    flex: 1;
    line-height: 1.5;
}

.option-status {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-soft);
    font-size: 0.9rem;
}

/* Correct option styling */
.correct-option {
    border-color: var(--success);
    background: rgba(43, 203, 119, 0.05);
}

.correct-option .option-letter {
    background: var(--success);
    color: white;
}

.correct-option .option-status {
    color: var(--success);
}

/* User selected option (wrong) */
.user-selected:not(.correct-option) {
    border-color: var(--error);
    background: rgba(255, 90, 95, 0.05);
}

.user-selected:not(.correct-option) .option-letter {
    background: var(--error);
    color: white;
}

.user-selected:not(.correct-option) .option-status {
    color: var(--error);
}

/* Question Explanation */
.question-explanation {
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    background: var(--background);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-blue);
}

.explanation-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    font-weight: 600;
    color: var(--text-dark);
}

.explanation-content {
    line-height: 1.6;
    color: var(--text-dark);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--space-3xl);
    color: var(--text-soft);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: var(--space-lg);
    opacity: 0.5;
}

/* Error Toast */
.error-toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--error);
    color: white;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    transform: translateX(120%);
    transition: transform var(--transition-normal);
    max-width: 400px;
}

.error-toast.show {
    transform: translateX(0);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex: 1;
}

.toast-close {
    background: transparent;
    border: none;
    color: white;
    cursor: pointer;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.toast-close:hover {
    opacity: 1;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-md);
    }
    
    .drill-title {
        font-size: 1.5rem;
    }
    
    .performance-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }
    
    .stat-value {
        font-size: 2rem;
    }
    
    .question-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }
    
    .question-meta {
        flex-wrap: wrap;
    }
    
    .option {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
    
    .option-status {
        align-self: flex-end;
    }
}

@media (max-width: 480px) {
    .performance-stats {
        grid-template-columns: 1fr;
    }
    
    .summary-card {
        padding: var(--space-lg);
    }
    
    .question-card {
        padding: var(--space-lg);
    }
}

/* Add these to your existing CSS */
.score-excellent { color: var(--success); }
.score-good { color: var(--warning); }
.score-fair { color: var(--text-soft); }
.score-poor { color: var(--error); }

.performance-expert { background: var(--success); }
.performance-advanced { background: var(--warning); }
.performance-intermediate { background: var(--accent-purple); }
.performance-beginner { background: var(--primary-blue); }

.level-badge {
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}
.level-expert { background: var(--success); color: white; }
.level-advanced { background: var(--warning); color: var(--text-dark); }
.level-intermediate { background: var(--accent-purple); color: white; }
.level-beginner { background: var(--primary-blue); color: white; }

.positive { color: var(--success); }
.negative { color: var(--error); }

.current-user {
    background: rgba(42, 104, 255, 0.1);
    border-left: 4px solid var(--primary-blue);
}

.question-card.expanded .question-explanation {
    display: block;
}

.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.loading-spinner-large {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border);
    border-top: 4px solid var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}