/* Theme variables */
:root {
    --background-color: #ffffff;
    --text-color: #333333;
    --accent-color: #007bff;
}

.watermark {
    position: fixed;
    bottom: 10px;
    right: 10px;
    font-size: 18px;
    color: #131312;
    opacity: 0.7;
    z-index: 1000;
    pointer-events: none;
}

/* Base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: url('quizbackground.png') no-repeat center center fixed;
    background-size: cover;
   color: var(--text-color);
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(45deg, 
        #FF0080, /* Hot Pink */
        #FF0000, /* Red */
        #FF8C00, /* Dark Orange */
        #FFD700, /* Gold */
        #32CD32, /* Lime Green */
        #00FFFF, /* Cyan */
        #0080FF, /* Blue */
        #8A2BE2  /* Blue Violet */
    );
    background-size: 800% 800%;
    animation: gradientBG 20s ease infinite;
    opacity: 0.15;
    filter: saturate(150%);
}

@keyframes gradientBG {
    0% { background-position: 0% 0%; }
    25% { background-position: 50% 100%; }
    50% { background-position: 100% 0%; }
    75% { background-position: 50% 100%; }
    100% { background-position: 0% 0%; }
}

button, .button {
    background-color: var(--accent-color);
    border: none;
    border-radius: 5px;
    color: white;
    padding: 10px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

button:hover, .button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.cancel-edit-btn {
    background-color: #dc3545;
    color: white;
    margin-right: 10px;
    margin-bottom: 20px;
}

.cancel-edit-btn:hover {
    background-color: #c82333;
}

/* Theme Settings */
.theme-settings {
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.theme-settings h3 {
    margin-bottom: 15px;
    color: #333;
}

.color-pickers {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.color-pickers div {
    display: flex;
    align-items: center;
    gap: 10px;
}

.color-pickers input[type="color"] {
    width: 50px;
    height: 40px;
    padding: 2px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

/* Winners Modal */
.winners-content {
    text-align: center;
    padding: 40px;
    max-height: 90vh;
    overflow-y: auto;
}

#fullLeaderboard {
    margin-top: 30px;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    max-height: 300px;
    overflow-y: auto;
}

#fullLeaderboard .leaderboard-entry {
    padding: 10px;
    margin-bottom: 5px;
    border-radius: 4px;
    background-color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

#fullLeaderboard .leaderboard-entry:last-child {
    margin-bottom: 0;
}

#fullLeaderboard .leaderboard-entry.top-three {
    font-weight: bold;
}

#fullLeaderboard .rank {
    width: 30px;
    text-align: center;
    font-weight: bold;
}

#fullLeaderboard .name {
    flex: 1;
    margin: 0 10px;
}

#fullLeaderboard .score {
    width: 60px;
    text-align: right;
    color: var(--accent-color);
}

#fullLeaderboard .stats {
    margin-left: 15px;
    font-size: 0.85em;
    color: #666;
}

#totalParticipants {
    font-size: 1.2em;
    color: #666;
    margin: 10px 0 20px;
}

.winner-rank {
    font-size: 0.9em;
    color: #666;
    margin-top: 5px;
}

.winners-announcement h2 {
    font-size: 2.5em;
    margin-bottom: 30px;
    color: #333;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.winners-podium {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: 20px;
    margin: 40px 0;
}

.winner {
    padding: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.winner.show {
    opacity: 1;
    transform: translateY(0);
}

#firstPlace {
    order: 2;
    padding-bottom: 60px;
}

#secondPlace {
    order: 1;
    padding-bottom: 40px;
}

#thirdPlace {
    order: 3;
    padding-bottom: 20px;
}

.trophy {
    font-size: 3em;
    margin-bottom: 10px;
}

.winner h3 {
    margin: 10px 0;
    color: #333;
}

.winner-name {
    font-size: 1.2em;
    font-weight: bold;
    margin: 5px 0;
}

.winner-score {
    color: #666;
}

.winners-actions {
    margin-top: 30px;
    display: flex;
    gap: 15px;
    justify-content: center;
}

.winners-actions button {
    padding: 12px 30px;
    font-size: 1.1em;
}

.download-report {
    background-color: #28a745;
}

.download-report:hover {
    background-color: #218838;
}

.close-winners {
    background-color: #6c757d;
}

.close-winners:hover {
    background-color: #5a6268;
}

/* QR Code */
#qrCode {
    text-align: center;
    margin: 20px 0;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

#qrCode h3 {
    color: #333;
    margin-bottom: 15px;
}

#qrCode img {
    max-width: 200px;
    margin: 10px auto;
    display: block;
    border-radius: 4px;
}

/* Modal styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

.modal-content {
    position: relative;
    background-color: #fff;
    margin: 50px auto;
    padding: 20px;
    width: 80%;
    max-width: 800px;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    max-height: 80vh;
    overflow-y: auto;
}

.close-modal {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 24px;
    cursor: pointer;
    color: #666;
}

.close-modal:hover {
    color: #333;
}

.quiz-preview {
    padding: 20px;
}

.quiz-preview-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.quiz-preview-header h2 {
    margin-bottom: 10px;
    color: #333;
}

.quiz-meta {
    display: flex;
    gap: 20px;
    color: #666;
    font-size: 14px;
    align-items: center;
}

.quiz-author {
    padding: 4px 8px;
    background-color: #f0f0f0;
    border-radius: 4px;
    display: flex;
    align-items: center;
}

.quiz-author::before {
    content: '👤';
    margin-right: 6px;
}

.quiz-questions {
    margin-top: 20px;
}

.preview-question {
    background-color: #f8f9fa;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 5px;
}

.preview-question h3 {
    margin-bottom: 10px;
    color: #333;
}

.preview-options {
    list-style: none;
    padding-left: 20px;
}

.preview-option {
    padding: 8px;
    margin-bottom: 5px;
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 3px;
}

.preview-option.correct {
    border-color: #28a745;
    background-color: #d4edda;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f4f4f4;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header and Branding */
header {
    background-color: #fff;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo {
    animation: pulse 2s infinite;
}

.logo svg {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

header h1 {
    color: #007bff;
    font-size: 2em;
    font-weight: bold;
    text-transform: none;
    letter-spacing: 1px;
    margin: 0;
    background: linear-gradient(45deg, #007bff, #00bfff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

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

nav {
    display: flex;
    gap: 10px;
}

/* Buttons */
button, .button {
    padding: 10px 20px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    text-decoration: none;
    font-size: 14px;
    transition: background-color 0.3s;
}

button:hover, .button:hover {
    background-color: #0056b3;
}

button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

/* Sections */
.section {
    background-color: #fff;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.section h2 {
    margin-bottom: 20px;
    color: #333;
}

/* Forms */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #555;
}

input[type="text"],
input[type="number"],
textarea,
select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

/* Search and Filter */
.quiz-filters {
    margin-bottom: 20px;
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
}

.search-bar {
    flex: 1;
    min-width: 200px;
}

.search-bar input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
}

.filter-controls {
    display: flex;
    gap: 10px;
}

.filter-controls select {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    min-width: 150px;
}

/* Quiz Tabs */
.quiz-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid #eee;
    padding-bottom: 10px;
}

.tab-button {
    padding: 10px 20px;
    background: none;
    border: none;
    color: #666;
    cursor: pointer;
    font-size: 16px;
    position: relative;
    transition: color 0.3s;
}

.tab-button:after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: #007bff;
    transform: scaleX(0);
    transition: transform 0.3s;
}

.tab-button.active {
    color: #007bff;
}

.tab-button.active:after {
    transform: scaleX(1);
}

/* Archived Quiz Card */
.archived-quiz-card {
    border: 1px solid #ddd;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 5px;
    background-color: #f8f9fa;
}

.archived-quiz-card .quiz-stats {
    display: flex;
    gap: 20px;
    margin: 10px 0;
    color: #666;
    font-size: 14px;
}

.archived-quiz-card .export-button {
    background-color: #28a745;
}

.archived-quiz-card .export-button:hover {
    background-color: #218838;
}

/* Quiz Cards */
.quiz-card {
    border: 1px solid #ddd;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 5px;
}

.quiz-card h3 {
    margin-bottom: 10px;
    color: #333;
}

.quiz-controls {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

/* Question Container */
.question-container {
    border: 1px solid #ddd;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 5px;
}

.options {
    margin: 10px 0;
}

.option {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.option input[type="text"] {
    flex: 1;
}

/* Image Upload Styles */
.question-image {
    margin: 10px 0;
}

.image-preview {
    margin: 10px 0;
    position: relative;
    max-width: 300px;
}

.image-preview img {
    max-width: 100%;
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.remove-image {
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #dc3545;
}

.remove-image:hover {
    background: #fff;
    color: #dc3545;
}

/* File Input Styling */
input[type="file"] {
    width: 0.1px;
    height: 0.1px;
    opacity: 0;
    overflow: hidden;
    position: absolute;
    z-index: -1;
}

/* Override for file upload area input */
.file-upload-area input[type="file"] {
    width: 100%;
    height: 100%;
    opacity: 0;
    overflow: visible;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    cursor: pointer;
}

input[type="file"] + label {
    display: inline-block;
    padding: 8px 16px;
    background-color: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

input[type="file"] + label:hover {
    background-color: #e9ecef;
}

/* Question Preview with Image */
.preview-question-image {
    margin: 10px 0;
    max-width: 300px;
}

.preview-question-image img {
    max-width: 100%;
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

/* Live Quiz Control */
#liveQuizControl {
    display: none;
}

/* Question Display */
.question-display {
    background-color: #fff;
    border-radius: 8px;
    padding: 20px;
    margin: 20px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.current-question {
    text-align: left;
}

.current-question h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 1.4em;
}

.current-question .question-text {
    font-size: 1.2em;
    margin-bottom: 15px;
    color: #444;
    line-height: 1.5;
}

.current-question .time-limit {
    color: #dc3545;
    font-weight: bold;
    margin-bottom: 20px;
    padding: 8px;
    background-color: #fff5f5;
    border-radius: 4px;
    display: inline-block;
}

.current-question .options-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.current-question .option {
    background-color: #f8f9fa;
    padding: 12px 15px;
    border-radius: 6px;
    border: 1px solid #e9ecef;
    display: flex;
    align-items: center;
}

.current-question .option-letter {
    font-weight: bold;
    color: var(--accent-color);
    margin-right: 10px;
    min-width: 25px;
}

.current-question .option-text {
    flex: 1;
}

#sessionInfo {
    background-color: #e9ecef;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
}

#participantCount {
    margin-bottom: 20px;
}

.participant-names {
    padding: 10px;
    background-color: #f8f9fa;
    border-radius: 4px;
    margin-top: 10px;
    white-space: pre;
    overflow-x: auto;
    font-family: monospace;
    border: 1px solid #ddd;
    max-height: 100px;
    overflow-y: auto;
}

#questionControl {
    margin-bottom: 20px;
}

/* Leaderboard */
#liveLeaderboard {
    background-color: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-top: 20px;
}

#liveLeaderboard h3 {
    color: #333;
    margin-bottom: 15px;
    text-align: center;
}

.leaderboard-entry {
    display: flex;
    align-items: center;
    padding: 12px;
    border-bottom: 1px solid #eee;
    transition: background-color 0.3s;
}

.leaderboard-entry:hover {
    background-color: #f8f9fa;
}

.leaderboard-entry:last-child {
    border-bottom: none;
}

.leaderboard-entry.top-three {
    background-color: #f8f9fa;
    border-radius: 4px;
    margin-bottom: 4px;
}

.leaderboard-entry.top-three:nth-child(1) {
    background-color: #fff7e6;
    border: 1px solid #ffd700;
}

.leaderboard-entry.top-three:nth-child(2) {
    background-color: #f8f9fa;
    border: 1px solid #c0c0c0;
}

.leaderboard-entry.top-three:nth-child(3) {
    background-color: #fff5f2;
    border: 1px solid #cd7f32;
}

.rank {
    width: 40px;
    font-weight: bold;
    color: #666;
}

.name {
    flex: 1;
    font-weight: 500;
}

.score {
    width: 80px;
    text-align: right;
    font-weight: bold;
    color: #007bff;
}

.stats {
    display: flex;
    gap: 15px;
    margin-left: 20px;
    color: #666;
    font-size: 0.9em;
}

.answered, .correct {
    display: flex;
    align-items: center;
}

.answered::before, .correct::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 6px;
}

.answered::before {
    background-color: #007bff;
}

.correct::before {
    background-color: #28a745;
}

/* Timer */
#timer {
    font-size: 24px;
    font-weight: bold;
    text-align: center;
    margin: 15px 0;
    color: #dc3545;
}

/* Report Controls */
.report-controls {
    display: flex;
    gap: 10px;
    margin-top: 20px;
    justify-content: center;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 5px;
}

.report-controls button {
    min-width: 150px;
    padding: 12px 24px;
    font-size: 16px;
}

#endQuizBtn {
    background-color: #dc3545;
}

#endQuizBtn:hover {
    background-color: #c82333;
}

/* Answer feedback animations */
@keyframes correctAnswer {
    0% { background-color: #ffffff; }
    50% { background-color: #28a745; }
    100% { background-color: #e8f5e9; }
}

@keyframes wrongAnswer {
    0% { background-color: #ffffff; }
    50% { background-color: #007bff; }
    100% { background-color: #e3f2fd; }
}

.correct-answer {
    animation: correctAnswer 1s ease forwards;
    border: 2px solid #28a745 !important;
}

.wrong-answer {
    animation: wrongAnswer 1s ease forwards;
    border: 2px solid #007bff !important;
}

/* Timer expired animation */
@keyframes highlightCorrect {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); background-color: #28a745; }
    100% { transform: scale(1); background-color: #e8f5e9; }
}

.highlight-correct {
    animation: highlightCorrect 1s ease forwards;
    border: 2px solid #28a745 !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    nav {
        flex-direction: column;
    }

    button, .button {
        width: 100%;
        margin-bottom: 5px;
    }

    .quiz-controls {
        flex-direction: column;
    }

    .leaderboard-entry {
        font-size: 14px;
    }

    /* Mobile-specific leaderboard */
    #liveLeaderboard {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.95);
        padding: 10px;
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
        max-height: 80px;
        overflow: hidden;
    }

    #liveLeaderboard .leaderboard-entry {
        padding: 5px;
        border: none;
    }

    #liveLeaderboard .stats {
        display: none;
    }

    #liveLeaderboard h3 {
        display: none;
    }

    #liveLeaderboard .name {
        max-width: 100px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
}

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

.section {
    animation: fadeIn 0.3s ease-in;
}

/* Quiz Section Styles */
#quizSection {
    text-align: center;
}

#waitingMessage {
    font-size: 20px;
    color: #666;
    margin: 20px 0;
}

#questionText {
    font-size: 24px;
    margin-bottom: 20px;
}

#options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 500px;
    margin: 0 auto;
}

#options button {
    padding: 15px;
    font-size: 16px;
    background-color: #f8f9fa;
    color: #333;
    border: 1px solid #ddd;
}

#options button:hover:not(:disabled) {
    background-color: #e9ecef;
}

#options button:disabled {
    opacity: 0.7;
}

/* AI Quiz Generation Styles */
.quiz-mode-selector {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
    padding-bottom: 10px;
}

.mode-btn {
    padding: 10px 20px;
    border: none;
    background: #f5f5f5;
    color: #666;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.mode-btn.active {
    background: var(--accent-color);
    color: white;
}

.mode-btn:hover {
    background: #e0e0e0;
}

.mode-btn.active:hover {
    background: var(--accent-color);
    opacity: 0.9;
}

.quiz-creation-mode {
    animation: fadeIn 0.3s ease-in;
}

.ai-generation-container {
    max-width: 800px;
}

.ai-description {
    color: #666;
    margin-bottom: 20px;
    font-style: italic;
}

.input-method-selector {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.input-method-btn {
    padding: 8px 16px;
    border: 2px solid #ddd;
    background: white;
    color: #666;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.input-method-btn.active {
    border-color: var(--accent-color);
    background: var(--accent-color);
    color: white;
}

.input-section {
    margin-bottom: 20px;
}

.file-upload-area {
    border: 2px dashed #ddd;
    border-radius: 10px;
    padding: 40px 20px;
    text-align: center;
    background: #fafafa;
    transition: all 0.3s ease;
    position: relative;
    cursor: pointer;
}

.file-upload-area:hover {
    border-color: var(--accent-color);
    background: #f0f8ff;
}

.file-upload-area.dragover {
    border-color: var(--accent-color);
    background: #e6f3ff;
}

.file-upload-area input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-placeholder {
    pointer-events: none;
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 10px;
}

.file-types {
    font-size: 12px;
    color: #999;
    margin-top: 5px;
}

.file-info {
    background: white;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 15px;
    text-align: left;
}

.file-info h4 {
    color: var(--accent-color);
    margin-bottom: 5px;
}

.file-info p {
    margin: 2px 0;
    font-size: 14px;
}

.text-stats {
    font-size: 12px;
    color: #666;
    margin-top: 5px;
}

.generation-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 8px;
}

.generation-controls {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 30px;
}

#generateQuizBtn {
    background: linear-gradient(45deg, #007bff, #0056b3);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

#generateQuizBtn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 123, 255, 0.3);
}

#generateQuizBtn:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-loading {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-loading::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.cancel-btn {
    background: #6c757d;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.cancel-btn:hover {
    background: #5a6268;
}

.generated-quiz-preview {
    border: 2px solid var(--accent-color);
    border-radius: 10px;
    padding: 20px;
    background: white;
    margin-top: 20px;
}

.quiz-preview-header {
    margin-bottom: 20px;
}

.quiz-preview-header input,
.quiz-preview-header textarea {
    width: 100%;
    margin-bottom: 10px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

.quiz-preview-header input {
    font-weight: 600;
    font-size: 18px;
}

.generated-questions {
    max-height: 400px;
    overflow-y: auto;
    margin-bottom: 20px;
}

.generated-question {
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
    background: #fafafa;
}

.generated-question.editing {
    background: #fff;
    border-color: var(--accent-color);
}

.question-header {
    display: flex;
    justify-content: between;
    align-items: center;
    margin-bottom: 10px;
}

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

.edit-question-btn {
    background: none;
    border: none;
    color: var(--accent-color);
    cursor: pointer;
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 3px;
    transition: background 0.3s ease;
}

.edit-question-btn:hover {
    background: #e6f3ff;
}

.question-text-display {
    font-weight: 500;
    margin-bottom: 10px;
    line-height: 1.4;
}

.question-text-edit {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-bottom: 10px;
    font-size: 14px;
}

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

.option-item {
    display: flex;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

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

.option-letter {
    width: 25px;
    height: 25px;
    border-radius: 50%;
    background: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    margin-right: 10px;
    font-size: 12px;
}

.option-item.correct .option-letter {
    background: #28a745;
    color: white;
}

.option-text {
    flex: 1;
    line-height: 1.3;
}

.option-text-edit {
    flex: 1;
    padding: 6px;
    border: 1px solid #ddd;
    border-radius: 3px;
    font-size: 13px;
}

.correct-indicator {
    color: #28a745;
    font-weight: 600;
    font-size: 12px;
    margin-left: 10px;
}

.preview-controls {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.preview-controls button {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.preview-controls button:first-child {
    background: #ffc107;
    color: #212529;
}

.preview-controls button:first-child:hover {
    background: #e0a800;
}

.preview-controls button:nth-child(2) {
    background: #28a745;
    color: white;
}

.preview-controls button:nth-child(2):hover {
    background: #218838;
}

.preview-controls button:last-child {
    background: #6c757d;
    color: white;
}

.preview-controls button:last-child:hover {
    background: #5a6268;
}

/* Loading and Animation Styles */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .generation-options {
        grid-template-columns: 1fr;
    }
    
    .generation-controls {
        flex-direction: column;
        align-items: center;
    }
    
    .preview-controls {
        flex-direction: column;
    }
    
    .quiz-mode-selector {
        flex-direction: column;
    }
    
    .input-method-selector {
        flex-direction: column;
    }
}

/* Error and Success Messages */
.message {
    padding: 12px 16px;
    border-radius: 6px;
    margin: 10px 0;
    font-weight: 500;
}

.message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.message.info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}