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

body {
    font-family: 'Open Sans', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

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

/* Header Styles */
.header {
    text-align: center;
    margin-bottom: 30px;
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
}

.main-title {
    font-family: 'Fredoka One', cursive;
    font-size: 2.5rem;
    color: #4a5568;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.main-title i {
    color: #f6ad55;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.subtitle {
    font-size: 1.2rem;
    color: #718096;
    margin-bottom: 20px;
}

/* Progress Bar */
.progress-bar {
    position: relative;
    background: #e2e8f0;
    height: 20px;
    border-radius: 10px;
    overflow: hidden;
    margin-top: 20px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #48bb78, #38a169);
    border-radius: 10px;
    transition: width 0.5s ease;
    width: 0%;
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-weight: 600;
    color: #4a5568;
    font-size: 0.9rem;
}

/* Navigation */
.navigation {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.nav-btn {
    background: rgba(255, 255, 255, 0.9);
    border: none;
    padding: 15px 25px;
    border-radius: 15px;
    cursor: pointer;
    font-weight: 600;
    color: #4a5568;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    background: rgba(255, 255, 255, 1);
}

.nav-btn.active {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    transform: translateY(-2px);
}

.nav-btn i {
    font-size: 1.1rem;
}

/* Content Sections */
.content-section {
    display: none;
    animation: fadeIn 0.5s ease;
}

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

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

.section-title {
    font-family: 'Fredoka One', cursive;
    font-size: 2rem;
    text-align: center;
    margin-bottom: 30px;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.character-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.character-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.25);
}

.character-card.villain {
    border: 2px solid #e53e3e;
}

.card-image {
    width: 100%;
    height: 200px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    margin-bottom: 20px;
    position: relative;
    overflow: hidden;
}

.card-image.locked {
    background: linear-gradient(135deg, #cbd5e0, #a0aec0);
    color: #4a5568;
}

.card-image.locked i {
    font-size: 2rem;
    margin-bottom: 10px;
}

.card-image.unlocked {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.card-image.unlocked::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.3) 50%, transparent 70%);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.card-info h3 {
    font-family: 'Fredoka One', cursive;
    font-size: 1.3rem;
    color: #2d3748;
    margin-bottom: 5px;
}

.character-subtitle {
    font-weight: 600;
    color: #667eea;
    margin-bottom: 10px;
}

.character-description {
    color: #718096;
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.card-number {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Quiz Styles */
.quiz-container {
    max-width: 800px;
    margin: 0 auto;
}

.quiz-info {
    background: rgba(255, 255, 255, 0.9);
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    margin-bottom: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.question-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
}

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 10px;
}

.question-number {
    background: #667eea;
    color: white;
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.character-unlock {
    background: #48bb78;
    color: white;
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.question-text {
    font-size: 1.3rem;
    color: #2d3748;
    margin-bottom: 25px;
    line-height: 1.5;
}

.answers-grid {
    display: grid;
    gap: 15px;
    margin-bottom: 20px;
}

.answer-btn {
    background: rgba(255, 255, 255, 0.8);
    border: 2px solid #e2e8f0;
    padding: 15px 20px;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    font-size: 1rem;
    color: #4a5568;
}

.answer-btn:hover {
    background: rgba(255, 255, 255, 1);
    border-color: #667eea;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.answer-btn.correct {
    background: #48bb78;
    color: white;
    border-color: #38a169;
}

.answer-btn.incorrect {
    background: #e53e3e;
    color: white;
    border-color: #c53030;
}

.answer-btn.disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.question-feedback {
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-weight: 600;
    text-align: center;
    display: none;
}

.question-feedback.correct {
    background: #c6f6d5;
    color: #22543d;
    border: 2px solid #48bb78;
}

.question-feedback.incorrect {
    background: #fed7d7;
    color: #742a2a;
    border: 2px solid #e53e3e;
}

.next-question-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 15px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    width: 100%;
}

.next-question-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Activities Styles */
.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.activity-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 25px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.activity-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.25);
}

.activity-card h3 {
    font-family: 'Fredoka One', cursive;
    font-size: 1.3rem;
    color: #2d3748;
    margin-bottom: 15px;
}

.activity-card p {
    color: #718096;
    margin-bottom: 20px;
}

.activity-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 15px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.activity-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: 20px;
    width: 90%;
    max-width: 600px;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-content.celebration {
    text-align: center;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.close-btn {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 2rem;
    cursor: pointer;
    color: #718096;
    transition: color 0.3s ease;
}

.close-btn:hover {
    color: #2d3748;
}

.unlocked-character {
    width: 200px;
    height: 200px;
    margin: 20px auto;
    border-radius: 15px;
    background-size: cover;
    background-position: center;
    border: 3px solid white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.celebration-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
    padding: 15px 30px;
    border-radius: 15px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    margin-top: 20px;
}

.celebration-btn:hover {
    background: white;
    color: #667eea;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .main-title {
        font-size: 2rem;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .navigation {
        gap: 5px;
    }
    
    .nav-btn {
        padding: 12px 20px;
        font-size: 0.9rem;
    }
    
    .question-header {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 1.5rem;
    }
    
    .nav-btn {
        padding: 10px 15px;
        font-size: 0.8rem;
    }
    
    .character-card {
        padding: 20px;
    }
    
    .card-image {
        height: 150px;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles for accessibility */
button:focus,
.nav-btn:focus,
.answer-btn:focus {
    outline: 3px solid #f6ad55;
    outline-offset: 2px;
}