/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
    padding-bottom: 2rem;
}

/* Navigation */
.navbar {
    background-color: #2c3e50;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.logo h1 {
    color: #fff;
    font-size: 1.8rem;
    font-weight: 700;
}

.nav-links button {
    background: none;
    border: none;
    color: #fff;
    padding: 0.5rem 1rem;
    margin-left: 1rem;
    cursor: pointer;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.nav-links button:hover {
    color: #3498db;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: white;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Games Grid */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.game-card {
    background: white;
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.game-card:hover {
    transform: translateY(-5px);
}

.game-card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.play-btn {
    background-color: #3498db;
    color: white;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    margin-top: 1rem;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.play-btn:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.play-btn:disabled {
    background-color: #bdc3c7;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* 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.show {
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    max-width: 800px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.modal-content h2 {
    color: #333;
    margin-bottom: 1.5rem;
    font-size: 2rem;
    border-bottom: 2px solid #eee;
    padding-bottom: 0.5rem;
}

.modal-content p {
    line-height: 1.6;
    color: #555;
    margin-bottom: 1rem;
}

.modal-content ul {
    margin: 1rem 0;
    padding-left: 2rem;
}

.modal-content li {
    margin-bottom: 0.5rem;
    line-height: 1.5;
}

/* Privacy and Terms Modal Specific */
#privacyModal .modal-content,
#termsModal .modal-content {
    max-width: 800px;
    font-size: 1.1rem;
    line-height: 1.8;
}

#privacyModal h2,
#termsModal h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: #2c3e50;
}

#privacyModal h3,
#termsModal h3 {
    font-size: 1.8rem;
    margin: 2rem 0 1rem;
    color: #3498db;
}

/* Leaderboard Modal Specific */
#leaderboardModal .modal-content {
    max-width: 1000px;
    padding: 2rem;
}

.leaderboard-controls {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: #f8f9fa;
    border-radius: 10px;
}

.user-code-section {
    text-align: center;
    padding: 1rem;
    background-color: #e8f4f8;
    border-radius: 8px;
    border: 2px solid #3498db;
}

.user-code-section h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.code-display {
    font-size: 2rem;
    font-weight: bold;
    color: #3498db;
    letter-spacing: 2px;
    padding: 0.5rem;
    background-color: white;
    border-radius: 5px;
    display: inline-block;
}

.leaderboard-code-section {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.leaderboard-code-section input {
    flex: 1;
    padding: 0.8rem;
    font-size: 1.1rem;
    border: 2px solid #3498db;
    border-radius: 5px;
    text-transform: uppercase;
}

.leaderboard-code-section button,
.leaderboard-actions button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.leaderboard-code-section button:hover,
.leaderboard-actions button:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.leaderboard-actions button:last-child {
    background-color: #e74c3c;
}

.leaderboard-actions button:last-child:hover {
    background-color: #c0392b;
}

.leaderboard-table {
    width: 100%;
    overflow-x: auto;
}

.leaderboard-table table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.leaderboard-table th,
.leaderboard-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.leaderboard-table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #2c3e50;
}

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

.leaderboard-table td:first-child {
    font-weight: 600;
    color: #3498db;
}

.close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: #666;
}

.close:hover {
    color: #000;
}

.modal-body {
    margin-top: 1rem;
}

/* Leaderboard Styles */
#leaderboardControls {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

#joinLeaderboard {
    display: flex;
    gap: 0.5rem;
}

#joinCode {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 5px;
}

#leaderboardList {
    margin-top: 1rem;
}

/* Game Modal Styles */
.game-content {
    width: 90%;
    max-width: 800px;
}

#gameHeader {
    text-align: center;
    margin-bottom: 2rem;
}

.difficulty-selection {
    text-align: center;
    padding: 2rem;
}

.difficulty-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.difficulty-btn {
    padding: 1rem 2rem;
    font-size: 1.2rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 120px;
}

.difficulty-btn:nth-child(1) {
    background-color: #4CAF50;
    color: white;
}

.difficulty-btn:nth-child(2) {
    background-color: #FFA500;
    color: white;
}

.difficulty-btn:nth-child(3) {
    background-color: #f44336;
    color: white;
}

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

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    background-color: #2c3e50;
    color: white;
    margin-top: auto;
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        text-align: center;
    }

    .nav-links {
        margin-top: 1rem;
    }

    .nav-links button {
        margin: 0.5rem;
    }

    .hero h2 {
        font-size: 2rem;
    }

    .games-grid {
        grid-template-columns: 1fr;
    }

    .modal-content {
        margin: 10% auto;
        width: 95%;
    }

    #difficultySelect {
        flex-direction: column;
    }
}

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

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

/* Game-specific styles */
.question-container {
    text-align: center;
    padding: 1rem;
}

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

.option-btn {
    padding: 1rem;
    border: 2px solid #3498db;
    border-radius: 5px;
    background-color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    -webkit-tap-highlight-color: transparent;
}

.option-btn:hover {
    background-color: #3498db;
    color: white;
}

.option-btn.correct {
    background-color: #2ecc71;
    color: white;
    border-color: #2ecc71;
}

.option-btn.incorrect {
    background-color: #e74c3c;
    color: white;
    border-color: #e74c3c;
}

.option-btn:disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

.score-display {
    text-align: center;
    font-size: 1.5rem;
    margin: 1rem 0;
}

.nickname-section {
    margin: 1.5rem 0;
    text-align: center;
}

.nickname-section label {
    display: block;
    margin-bottom: 0.5rem;
    color: #2c3e50;
    font-weight: 500;
}

.nickname-section input {
    width: 80%;
    max-width: 300px;
    padding: 0.8rem;
    border: 2px solid #3498db;
    border-radius: 8px;
    font-size: 1rem;
    text-align: center;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.nickname-section input:focus {
    outline: none;
    border-color: #2980b9;
    box-shadow: 0 0 5px rgba(41, 128, 185, 0.3);
}

/* Score Display */
#scoreDisplay {
    color: #fff;
    font-weight: bold;
    margin-right: 1rem;
    padding: 0.5rem 1rem;
    background-color: #3498db;
    border-radius: 5px;
}

/* Timer Display */
.timer-display {
    font-size: 1.5rem;
    font-weight: bold;
    color: #e74c3c;
    text-align: center;
    margin: 1rem 0;
    padding: 0.5rem;
    background-color: #f8f9fa;
    border-radius: 5px;
}

/* Daily Challenge Styles */
.daily-challenge-info {
    margin: 1.5rem 0;
    padding: 1rem;
    background-color: #f8f9fa;
    border-radius: 5px;
}

.daily-challenge-info p {
    margin: 0.5rem 0;
    color: #666;
}

/* Custom Quiz Styles */
.custom-quiz-form {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.custom-quiz-form .form-group {
    width: 100%;
    margin-bottom: 1.5rem;
}

.custom-quiz-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #333;
    font-size: 1.1rem;
}

.custom-quiz-form input[type="text"] {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.custom-quiz-form input[type="text"]:focus {
    border-color: #4CAF50;
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
    outline: none;
}

.custom-quiz-form .options-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 1rem;
}

.custom-quiz-form .option-input {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.custom-quiz-form .option-input input[type="radio"] {
    margin: 0;
}

.custom-quiz-form .option-input input[type="text"] {
    flex: 1;
}

.custom-quiz-form .remove-option {
    background: #ff4444;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 0.3rem 0.6rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.custom-quiz-form .remove-option:hover {
    background: #cc0000;
}

.custom-quiz-form .add-option {
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 0.5rem 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 0.5rem;
}

.custom-quiz-form .add-option:hover {
    background: #45a049;
    transform: translateY(-2px);
}

.custom-quiz-form .question-container {
    width: 100%;
    background: #f8f9fa;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

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

.custom-quiz-form .question-number {
    font-weight: 600;
    color: #4CAF50;
    font-size: 1.2rem;
}

.custom-quiz-form .remove-question {
    background: #ff4444;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 0.5rem 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.custom-quiz-form .remove-question:hover {
    background: #cc0000;
}

.custom-quiz-form .add-btn {
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 8px;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    max-width: 300px;
    margin: 1rem auto;
}

.custom-quiz-form .play-btn {
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 8px;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    max-width: 300px;
    margin: 1rem auto;
    display: block;
}

.share-section {
    text-align: center;
    padding: 2rem;
}

.share-section h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.share-link-container {
    display: flex;
    gap: 1rem;
    margin: 1.5rem 0;
    justify-content: center;
    align-items: center;
}

#shareLink {
    flex: 1;
    max-width: 400px;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.9rem;
    background-color: #f8f9fa;
}

.copy-btn {
    padding: 0.5rem 1rem;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.copy-btn:hover {
    background-color: #2980b9;
}

/* Contact Form Styles */
.contact-form {
    display: grid;
    gap: 1.5rem;
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: #333;
}

.form-group input,
.form-group textarea {
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: #4CAF50;
    outline: none;
    box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.1);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.submit-btn {
    background-color: #4CAF50;
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

.submit-btn:hover {
    background-color: #45a049;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* Social Links */
.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 2rem;
}

.social-link {
    color: #4CAF50;
    text-decoration: none;
    font-size: 1.2rem;
    transition: color 0.3s ease;
}

.social-link:hover {
    color: #45a049;
}