* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    border-radius: var(--border-radius);
}

:root {
    --primary-color: #4B4EFC;
    --primary-hover: #3538E8;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --text-color: #1A1A1A;
    --text-secondary: #6c757d;
    --background-color: #FFFFFF;
    --card-background: #FFFFFF;
    --border-color: #E5E7EB;
    --border-radius: 12px;
    --spacing-lg: 2rem;
    --spacing-md: 1rem;
    --spacing-sm: 0.5rem;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    
    /* Light theme specific */
    --input-background: #FFFFFF;
    --hover-background: #F8F9FF;
    --success-light: #e8f5e9;
    --danger-light: #ffebee;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    padding: var(--spacing-lg);
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

h1, h2, h3 {
    color: var(--text-color);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

.quiz-form, .quiz-section, .results-section {
    background: var(--card-background);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: var(--spacing-lg);
    position: relative;
    border-radius: var(--border-radius);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-color);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--card-background);
    color: var(--text-color);
    font-size: 1rem;
    transition: all 0.2s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(75, 78, 252, 0.1);
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    background: var(--primary-color);
    color: white;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.hidden {
    display: none;
}

.questions-container {
    margin-bottom: 1.5rem;
}

/* Will style quiz questions and results later */

.question {
    background: var(--card-background);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.question-text {
    font-weight: bold;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: flex-start;
}

.question-number {
    background: var(--primary-color);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    flex-shrink: 0;
    font-size: 0.875rem;
}

.options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    border-radius: var(--border-radius);
    border: 2px solid #E5E7EB;
    transition: all 0.2s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

/* Style for selected option */
.option input[type="radio"]:checked + span {
    color: var(--primary-color);
    font-weight: 500;
}

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

/* Selected option styling */
.option.selected,
.option input[type="radio"]:checked + span + .option {
    border-color: var(--primary-color);
    background-color: #F8F9FF;
}

/* Add a left accent when selected */
.option::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background-color: var(--primary-color);
    transform: scaleY(0);
    transition: transform 0.2s ease;
}

.option:hover::before,
.option input[type="radio"]:checked + span + .option::before {
    transform: scaleY(1);
}

/* Custom radio button */
.option input[type="radio"] {
    appearance: none;
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border: 2px solid #E5E7EB;
    border-radius: 50%;
    margin: 0;
    transition: all 0.2s ease;
    position: relative;
    cursor: pointer;
}

.option input[type="radio"]:checked {
    border-color: var(--primary-color);
    background-color: var(--primary-color);
    border-width: 6px;
}

/* Hover state */
.option:hover {
    border-color: var(--primary-color);
    background-color: #F8F9FF;
}

/* Selected state with animation */
.option input[type="radio"]:checked + span + .option {
    animation: selectPulse 0.3s ease;
}

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

.result-item {
    background: var(--card-background);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.result-item.correct {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
}

.result-item.incorrect {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
}

.score {
    text-align: center;
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--primary-color);
}

.explanation {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: #F3F4F6;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

/* Add these styles for the difficulty selector */
.form-select {
    width: 100%;
    padding: 1rem;
    border: 2px solid #E5E7EB;
    border-radius: var(--border-radius);
    font-size: 1rem;
    background: var(--card-background);
    color: var(--text-color);
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%234B4EFC' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.5em;
    padding-right: 3rem;
    transition: all 0.2s ease;
}

.form-select:hover {
    border-color: var(--primary-color);
}

.form-select:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(75, 78, 252, 0.1);
}

/* Style the dropdown options */
.form-select option {
    padding: 1rem;
    background: var(--card-background);
    color: var(--text-color);
}

/* Difficulty badges */
.difficulty-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    margin-right: 0.75rem;
}

.difficulty-badge.beginner {
    background-color: #e9ecef;
    color: #495057;
}

.difficulty-badge.easy {
    background-color: #d4edda;
    color: #155724;
}

.difficulty-badge.medium {
    background-color: #fff3cd;
    color: #856404;
}

.difficulty-badge.hard {
    background-color: #f8d7da;
    color: #721c24;
}

.difficulty-badge.expert {
    background-color: #cce5ff;
    color: #004085;
}

/* Question difficulty styling */
.question.beginner {
    border-left: 4px solid #e9ecef;
}

.question.easy {
    border-left: 4px solid #d4edda;
}

.question.medium {
    border-left: 4px solid #fff3cd;
}

.question.hard {
    border-left: 4px solid #f8d7da;
}

.question.expert {
    border-left: 4px solid #cce5ff;
}

/* Add to your existing CSS */
.loading {
    opacity: 0.5;
    pointer-events: none;
}

.loading::after {
    content: 'Processing...';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 1rem 2rem;
    border-radius: 4px;
    font-size: 1rem;
}

/* Update the loading screen styles */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

/* Add this to show the loading screen when needed */
.loading-screen:not(.hidden) {
    display: flex;
}

.loader {
    width: 48px;
    height: 48px;
    border: 4px solid var(--primary-color);
    border-bottom-color: transparent;
    border-radius: 50%;
    animation: rotation 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

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

.loading-screen p {
    color: var(--card-background);
    font-size: 1.25rem;
    font-weight: 500;
}

/* Theme toggle button */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--card-background);
    border: 2px solid var(--primary-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    z-index: 1000;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    transform: scale(1.1);
}

.theme-toggle svg {
    width: 24px;
    height: 24px;
    fill: var(--primary-color);
}

.theme-toggle .moon-icon {
    display: none;
}

/* File input styling */
.file-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.file-input-wrapper input[type="file"] {
    display: none;
}

.file-input-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease;
}

.file-input-label:hover {
    background-color: #3538E8;
}

.file-input-label svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.file-name {
    color: var(--text-color);
    font-size: 0.9rem;
}

/* Dark theme styles */
[data-theme="dark"] {
    --text-color: #FFFFFF;
    --text-secondary: #9CA3AF;
    --background-color: #1A1A1A;
    --card-background: #2D2D2D;
    --border-color: #404040;
    --input-background: #2d2d2d;
    --hover-background: #3a3a3a;
    --success-light: rgba(40, 167, 69, 0.2);
    --danger-light: rgba(220, 53, 69, 0.2);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3 {
    color: white;
}

[data-theme="dark"] .quiz-form,
[data-theme="dark"] .quiz-section,
[data-theme="dark"] .results-section {
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .option {
    border-color: var(--border-color);
}

[data-theme="dark"] .theme-toggle {
    background: var(--card-background);
    border-color: white;
}

[data-theme="dark"] .theme-toggle svg {
    fill: white;
}

[data-theme="dark"] label {
    color: var(--text-color);
}

[data-theme="dark"] .file-name {
    color: var(--text-color);
}

[data-theme="dark"] textarea, 
[data-theme="dark"] input[type="number"],
[data-theme="dark"] .form-select {
    background: var(--input-background);
    border-color: var(--border-color);
    color: var(--text-color);
}

[data-theme="dark"] .theme-toggle .sun-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: block;
}

/* Update the hover state for dark mode */
[data-theme="dark"] .option:hover {
    border-color: var(--primary-color);
    background-color: var(--hover-background);
}

[data-theme="dark"] .option.selected,
[data-theme="dark"] .option input[type="radio"]:checked + span + .option {
    border-color: var(--primary-color);
    background-color: var(--hover-background);
}

/* Update the hover background for selected options in dark mode */
[data-theme="dark"] .option input[type="radio"]:checked + span {
    color: var(--primary-color);
}

/* Update the background color for checked state in dark mode */
[data-theme="dark"] .option input[type="radio"]:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Add dark mode styles for the review/results screen */
[data-theme="dark"] .result-item {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

[data-theme="dark"] .result-item.correct {
    background-color: var(--success-light);
    border-color: var(--success-color);
}

[data-theme="dark"] .result-item.incorrect {
    background-color: var(--danger-light);
    border-color: var(--danger-color);
}

[data-theme="dark"] .explanation {
    background-color: var(--card-background);
    border-color: var(--primary-color);
    color: var(--text-color);
}

[data-theme="dark"] .score {
    color: var(--primary-color);
}

[data-theme="dark"] .result-item strong {
    color: var(--text-color);
}

[data-theme="dark"] .result-item p {
    color: var(--text-color);
}

/* Update the form select styles for dark mode */
[data-theme="dark"] .form-select {
    background-color: var(--input-background);
    color: var(--text-color);
    border-color: var(--border-color);
}

[data-theme="dark"] .form-select:focus {
    border-color: var(--primary-color);
    outline: none;
}

/* Style the dropdown options in dark mode */
[data-theme="dark"] .form-select option {
    background-color: var(--input-background);
    color: var(--text-color);
}

/* Update loading screen text color for dark mode */
[data-theme="dark"] .loading-screen p,
.loading-screen p {  /* Always keep loading text white since overlay is dark */
    color: white;
}

/* Style the loading indicator text for dark mode */
[data-theme="dark"] .loading::after {
    color: white;
    background: rgba(0, 0, 0, 0.9);
}

/* Add hover effect for the dropdown in dark mode */
[data-theme="dark"] .form-select:hover {
    border-color: var(--primary-color);
}

/* Add styles for free response questions */
.question-type-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    margin-right: 0.75rem;
    background-color: var(--primary-color);
    color: white;
}

.free-response {
    margin-top: 1rem;
}

.response-input {
    width: 100%;
    padding: 1rem;
    border: 2px solid #E5E7EB;
    border-radius: var(--border-radius);
    font-size: 1rem;
    resize: vertical;
    min-height: 100px;
    font-family: inherit;
}

.response-input:focus {
    border-color: var(--primary-color);
    outline: none;
}

/* Dark mode styles for free response */
[data-theme="dark"] .response-input {
    background-color: var(--input-background);
    border-color: var(--border-color);
    color: var(--text-color);
}

[data-theme="dark"] .response-input:focus {
    border-color: var(--primary-color);
}

/* Add styles for free response results */
.score-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    font-size: 1rem;
    font-weight: 600;
    margin-left: 1rem;
    background-color: var(--primary-color);
    color: white;
}

.feedback {
    margin-top: 1rem;
    padding: 1rem;
    background-color: #F3F4F6;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

[data-theme="dark"] .feedback {
    background-color: var(--card-background);
    color: var(--text-color);
}

/* Add styles for free response grading */
.sample-answer {
    margin-top: 1rem;
    padding: 1rem;
    background-color: #f8f9fa;
    border-radius: var(--border-radius);
    border-left: 4px solid #28a745;
}

[data-theme="dark"] .sample-answer {
    background-color: var(--card-background);
    color: var(--text-color);
}

.score-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 1rem;
    font-weight: 600;
    background-color: var(--primary-color);
    color: white;
    margin: 1rem 0;
}

.feedback, .explanation {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: var(--border-radius);
}

.feedback {
    background-color: #e9ecef;
    border-left: 4px solid var(--primary-color);
}

[data-theme="dark"] .feedback {
    background-color: var(--card-background);
}

/* Timer styles */
.timer-toggle {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Switch styling */
.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

/* Update timer display styles */
.timer-display {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--card-background);
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    z-index: 1000;
    border: 2px solid var(--primary-color);
    transition: all 0.3s ease;
}

.timer-display.warning {
    color: #ffa500;
    border-color: #ffa500;
    animation: pulse 1s infinite;
}

.timer-display.urgent {
    color: #dc3545;
    border-color: #dc3545;
    animation: pulse 0.5s infinite;
}

/* Timer alert styles */
.timer-alert {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-size: 1.5rem;
    font-weight: 600;
    z-index: 1001;
    animation: fadeIn 0.3s ease-out;
}

.timer-alert.fade-out {
    animation: fadeOut 0.5s ease-out forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translate(-50%, -40%);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
    to {
        opacity: 0;
        transform: translate(-50%, -60%);
    }
}

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

/* Dark mode support */
[data-theme="dark"] .timer-alert {
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--text-color);
}

/* Tab Navigation Styles */
.tab-navigation {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tab-btn {
    padding: 1rem 2rem;
    background: var(--card-background);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-color);
    transition: all 0.3s ease;
}

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

.tab-btn:hover:not(.active) {
    background: #f0f0f0;
    transform: translateY(-2px);
}

.tab-content {
    display: none;
}

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

/* Essay specific styles */
.essay-form {
    background: var(--card-background);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
}

.grade-display {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin: 2rem 0;
}

.feedback-section {
    margin-top: 2rem;
}

.feedback-category {
    background: var(--card-background);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    border-left: 4px solid var(--primary-color);
}

.feedback-category h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
}

/* Dark mode styles for tabs */
[data-theme="dark"] .tab-btn {
    background: var(--card-background);
    color: var(--text-color);
}

[data-theme="dark"] .tab-btn:hover:not(.active) {
    background: var(--input-background);
}

[data-theme="dark"] .feedback-category {
    background: var(--card-background);
    color: var(--text-color);
}

/* Rubric styles */
.rubric-toggle {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

#rubricText {
    width: 100%;
    min-height: 150px;
    padding: 1rem;
    border: 2px solid #E5E7EB;
    border-radius: var(--border-radius);
    font-size: 1rem;
    resize: vertical;
    font-family: inherit;
}

.rubric-evaluation {
    background: var(--card-background);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin: 2rem 0;
    border-left: 4px solid var(--primary-color);
}

.rubric-list {
    list-style: none;
    padding: 0;
}

.rubric-list li {
    padding: 1rem;
    border-bottom: 1px solid #E5E7EB;
}

.rubric-list li:last-child {
    border-bottom: none;
}

/* Dark mode styles for rubric */
[data-theme="dark"] #rubricText {
    background-color: var(--card-background);
    border-color: var(--border-color);
    color: var(--text-color);
}

[data-theme="dark"] .rubric-evaluation {
    background-color: var(--card-background);
    color: var(--text-color);
}

[data-theme="dark"] .rubric-list li {
    border-color: var(--border-color);
}

/* Progress container styles */
.progress-container {
    margin-bottom: 2rem;
    background: var(--card-background);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.progress-text {
    display: flex;
    justify-content: center;
    color: var(--text-color);
    font-weight: 500;
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.progress-indicator {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin: 1rem 0;
}

.progress-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--border-color);
    transition: all 0.3s ease;
    position: relative;
}

.progress-dot::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 100%;
    width: 0.75rem;
    height: 2px;
    background-color: var(--border-color);
    transform: translateY(-50%);
}

.progress-dot:last-child::after {
    display: none;
}

.progress-dot.active {
    background-color: var(--primary-color);
    transform: scale(1.2);
    box-shadow: 0 0 0 2px rgba(75, 78, 252, 0.2);
}

.progress-dot.completed {
    background-color: var(--success-color);
}

.progress-dot.completed::after {
    background-color: var(--success-color);
}

/* Dark theme support */
[data-theme="dark"] .progress-container {
    background: var(--dark-card);
    border-color: var(--dark-border);
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .progress-text {
    color: var(--dark-text);
}

[data-theme="dark"] .progress-dot {
    background-color: var(--dark-border);
}

[data-theme="dark"] .progress-dot::after {
    background-color: var(--dark-border);
}

[data-theme="dark"] .progress-dot.active {
    background-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(75, 78, 252, 0.3);
}

[data-theme="dark"] .progress-dot.completed {
    background-color: var(--success-color);
}

[data-theme="dark"] .progress-dot.completed::after {
    background-color: var(--success-color);
}

/* Question container to support flag button */
.question-container {
    position: relative;
    padding: 1rem;
    background: var(--card-background);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

/* Update flag button styles */
.flag-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.flag-btn svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
    transition: all 0.2s ease;
}

.flag-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
    transform: scale(1.1);
}

.flag-btn.flagged {
    color: var(--warning-color);
}

/* Dark theme support for flag button */
[data-theme="dark"] .flag-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Update question container to support flag button */
.question-container {
    position: relative;
    padding: 1rem;
    background: var(--card-background);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

/* Update progress dots for dark theme */
[data-theme="dark"] .progress-dot {
    background-color: var(--border-color);
}

[data-theme="dark"] .progress-dot.active {
    background-color: var(--primary-color);
}

[data-theme="dark"] .progress-dot.completed {
    background-color: var(--success-color);
}

/* About button and modal styles */
.about-link {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1000;
}

.about-btn {
    background-color: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.about-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.about-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(75, 78, 252, 0.5);
}

/* Dark mode styles for the about button */
[data-theme="dark"] .about-btn {
    background-color: #4B4EFC;
    color: white;
}

[data-theme="dark"] .about-btn:hover {
    background-color: #3538E8;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--card-background);
    padding: 2rem;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    position: relative;
    transform: translateY(-20px);
    transition: all 0.3s ease;
}

.modal.show .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-header h2 {
    margin: 0;
    color: var(--text-color);
    font-size: 1.8rem;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
    padding: 0.5rem;
}

.modal-body {
    color: var(--text-color);
}

.creator-info {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #E5E7EB;
}

.creator-info h3 {
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.subtitle {
    color: #6B7280;
    font-size: 0.9rem;
}

/* Dark mode styles */
[data-theme="dark"] .modal-content {
    background: var(--card-background);
}

[data-theme="dark"] .close-btn {
    color: var(--text-color);
}

[data-theme="dark"] .creator-info {
    border-color: var(--border-color);
}

[data-theme="dark"] .subtitle {
    color: var(--text-secondary);
}

/* Update the results display styles */
.results-content {
    padding: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.total-score {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px;
    background: var(--card-background);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.score-display {
    margin-top: 15px;
}

.score-number {
    font-size: 48px;
    font-weight: bold;
    color: var(--primary-color);
    display: block;
}

.score-details {
    font-size: 18px;
    color: var(--text-secondary);
}

.question-result {
    margin-bottom: 30px;
    padding: 25px;
    border-radius: var(--border-radius);
    background: var(--card-background);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-color);
}

.question-result.correct {
    border-left: 5px solid var(--success-color);
}

.question-result.incorrect {
    border-left: 5px solid var(--danger-color);
}

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.result-indicator {
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.875rem;
}

.correct .result-indicator {
    color: var(--success-color);
    background: var(--success-light);
}

.incorrect .result-indicator {
    color: var(--danger-color);
    background: var(--danger-light);
}

/* Dark theme styles for results */
[data-theme="dark"] .total-score {
    background: var(--card-background);
}

[data-theme="dark"] .question-result {
    background: var(--card-background);
    border-color: var(--border-color);
}

[data-theme="dark"] .question-header {
    border-color: var(--border-color);
}

[data-theme="dark"] .question-content {
    color: var(--text-color);
}

[data-theme="dark"] .answer-section {
    background: var(--input-background);
    border-color: var(--border-color);
}

[data-theme="dark"] .explanation {
    background-color: var(--card-background);
    border-color: var(--primary-color);
    color: var(--text-color);
}

[data-theme="dark"] .explanation-label {
    color: var(--text-color);
}

[data-theme="dark"] .score-details {
    color: var(--text-secondary);
}

/* Add smooth transitions for theme switching */
.question-result,
.total-score,
.answer-section,
.explanation {
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: var(--spacing-md);
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.25rem; }

    .score-number {
        font-size: 2.5rem;
    }

    .question-header {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}

/* Update results buttons container */
.results-buttons {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
}

.results-buttons .btn {
    min-width: 200px;
}

/* Improve text input styling */
#textInput {
    width: 100%;
    min-height: 120px;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: var(--font-family);
    resize: vertical;
    background: var(--card-background);
    color: var(--text-color);
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

#textInput:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(75, 78, 252, 0.1);
}

/* Add these styles for the number input */
input[type="number"] {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background: var(--card-background);
    color: var(--text-color);
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
    -moz-appearance: textfield; /* Remove default arrows in Firefox */
}

/* Remove default arrows/spinners */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Style focus state */
input[type="number"]:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(75, 78, 252, 0.1);
}

/* Add custom number controls */
.number-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.number-controls {
    position: absolute;
    right: 1rem;
    display: flex;
    gap: 0.5rem;
}

.number-control-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    transition: all 0.2s ease;
}

.number-control-btn:hover {
    color: var(--primary-color);
}

/* Dark mode support */
[data-theme="dark"] input[type="number"] {
    background: var(--input-background);
    border-color: var(--border-color);
    color: var(--text-color);
}

[data-theme="dark"] .number-control-btn {
    color: var(--text-secondary);
}

[data-theme="dark"] .number-control-btn:hover {
    color: var(--primary-color);
}

/* Update flag button styles */
.flag-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.flag-btn svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
    transition: all 0.2s ease;
}

.flag-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
    transform: scale(1.1);
}

.flag-btn.flagged {
    color: var(--warning-color);
}

/* Dark theme support for flag button */
[data-theme="dark"] .flag-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Update question container to support flag button */
.question-container {
    position: relative;
    padding: 1rem;
    background: var(--card-background);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

/* Update progress dots for dark theme */
[data-theme="dark"] .progress-dot {
    background-color: var(--border-color);
}

[data-theme="dark"] .progress-dot.active {
    background-color: var(--primary-color);
}

[data-theme="dark"] .progress-dot.completed {
    background-color: var(--success-color);
}