.lesson-modal .modal-content {
    max-width: 750px;
    width: 95%;
    max-height: 90vh;
    overflow-y: auto;
    padding: 0;
    border-radius: 25px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    border: 3px solid #4facfe;
    box-shadow: 0 0 50px rgba(79, 172, 254, 0.3);
}

.lesson-modal .modal-close {
    position: absolute;
    top: 15px;
    left: 15px;
    z-index: 100;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lesson-modal .modal-close:hover {
    background: rgba(255, 0, 0, 0.8);
    transform: scale(1.1);
}


.lesson-header {
    padding: 25px;
    text-align: center;
    border-radius: 22px 22px 0 0;
    position: relative;
}

.lesson-header h2 {
    color: white;
    font-size: 1.8rem;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.lesson-progress {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.lesson-progress .progress-bar {
    width: 200px;
    height: 10px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 5px;
    overflow: hidden;
}

.lesson-progress .progress-fill {
    height: 100%;
    background: white;
    border-radius: 5px;
    transition: width 0.5s ease;
}

.lesson-progress span {
    color: white;
    font-size: 0.9rem;
    opacity: 0.9;
}


.lesson-content {
    padding: 30px;
    min-height: 350px;
}


.slide-intro,
.slide-info,
.slide-quiz,
.slide-complete {
    text-align: center;
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}


.slide-intro .intro-image {
    font-size: 6rem;
    margin-bottom: 20px;
    animation: float 3s ease-in-out infinite;
}

.slide-intro h3 {
    font-size: 2rem;
    color: #ffd700;
    margin-bottom: 15px;
}

.slide-intro p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
}


.slide-info h3 {
    font-size: 1.8rem;
    color: #ffd700;
    margin-bottom: 20px;
}

.slide-info .info-content {
    font-size: 1.1rem;
    color: white;
    line-height: 1.8;
    margin-bottom: 25px;
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.facts-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 30px;
}

.fact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(0, 255, 136, 0.1);
    padding: 12px 20px;
    border-radius: 12px;
    border: 1px solid rgba(0, 255, 136, 0.2);
    text-align: right;
}

.fact-icon {
    width: 30px;
    height: 30px;
    background: #00ff88;
    color: #1a1a2e;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.fact-item span:last-child {
    color: white;
    font-size: 1rem;
}


.slide-quiz .quiz-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    animation: bounce 1s ease infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.slide-quiz h3 {
    font-size: 1.5rem;
    color: white;
    margin-bottom: 30px;
    line-height: 1.6;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 500px;
    margin: 0 auto;
}

.quiz-option {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    color: white;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: right;
}

.quiz-option:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.2);
    border-color: #4facfe;
    transform: translateX(-5px);
}

.quiz-option:disabled {
    cursor: not-allowed;
}

.quiz-option.correct {
    background: rgba(0, 255, 136, 0.3) !important;
    border-color: #00ff88 !important;
    animation: correctPulse 0.5s ease;
}

.quiz-option.wrong {
    background: rgba(255, 68, 68, 0.3) !important;
    border-color: #ff4444 !important;
    animation: wrongShake 0.5s ease;
}

.quiz-option .option-letter {
    width: 35px;
    height: 35px;
    background: rgba(255, 215, 0, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}


.slide-complete .complete-icon {
    font-size: 5rem;
    margin-bottom: 20px;
    animation: celebrate 1s ease infinite;
}

@keyframes celebrate {

    0%,
    100% {
        transform: scale(1) rotate(0deg);
    }

    25% {
        transform: scale(1.1) rotate(-5deg);
    }

    50% {
        transform: scale(1) rotate(0deg);
    }

    75% {
        transform: scale(1.1) rotate(5deg);
    }
}

.slide-complete h3 {
    font-size: 2rem;
    color: #ffd700;
    margin-bottom: 15px;
}

.slide-complete p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 25px;
}

.lesson-results {
    background: rgba(255, 215, 0, 0.1);
    border: 2px solid rgba(255, 215, 0, 0.3);
    border-radius: 20px;
    padding: 25px;
    margin-bottom: 25px;
}

.lesson-results .stars-display {
    font-size: 2.5rem;
    margin-bottom: 15px;
    letter-spacing: 8px;
}

.score-details {
    margin-bottom: 15px;
}

.score-details p {
    font-size: 1rem;
    color: white;
    margin: 5px 0;
}

.points-earned {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.points-earned .big-points {
    font-size: 3rem;
    font-weight: 800;
    color: #00ff88;
    text-shadow: 0 0 20px rgba(0, 255, 136, 0.5);
}

.points-earned span:last-child {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.7);
}

.complete-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}


.lesson-btn {
    padding: 15px 35px;
    font-size: 1.1rem;
    font-weight: 700;
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    color: white;
    border: none;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    box-shadow: 0 5px 20px rgba(79, 172, 254, 0.4);
}

.lesson-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(79, 172, 254, 0.6);
}

.lesson-btn.primary {
    background: linear-gradient(135deg, #00ff88, #00cc66);
    box-shadow: 0 5px 20px rgba(0, 255, 136, 0.4);
}

.lesson-btn.secondary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}


@media (max-width: 768px) {
    .lesson-modal .modal-content {
        max-width: 100%;
        margin: 10px;
        border-radius: 20px;
    }

    .lesson-header h2 {
        font-size: 1.4rem;
    }

    .slide-intro .intro-image {
        font-size: 4rem;
    }

    .slide-intro h3,
    .slide-complete h3 {
        font-size: 1.5rem;
    }

    .slide-quiz h3 {
        font-size: 1.2rem;
    }

    .quiz-option {
        font-size: 1rem;
        padding: 12px 15px;
    }

    .lesson-btn {
        padding: 12px 25px;
        font-size: 1rem;
    }

    .points-earned .big-points {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .lesson-content {
        padding: 20px;
    }

    .slide-info .info-content {
        padding: 15px;
        font-size: 1rem;
    }

    .fact-item {
        padding: 10px 15px;
        font-size: 0.9rem;
    }


    .complete-buttons {
        flex-direction: column;
    }
}



.library-body {
    background-color: #f0f4f8;
    background-image:
        radial-gradient(circle at 10% 20%, rgba(255, 255, 255, 0.4) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(255, 255, 255, 0.4) 0%, transparent 20%);
    min-height: 100vh;
}

.library-main-header {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    margin-bottom: 30px;
    border-radius: 0 0 30px 30px;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.library-main-header h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 10px;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.library-main-header p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 20px;
}

.library-quote {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 10px 30px;
    border-radius: 50px;
    font-size: 1.3rem;
    font-weight: 700;
    color: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: pulse-light 3s infinite;
}

@keyframes pulse-light {

    0%,
    100% {
        transform: scale(1);
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }

    50% {
        transform: scale(1.05);
        box-shadow: 0 10px 25px rgba(255, 255, 255, 0.2);
    }
}


.nav-back-container {
    padding: 20px;
}

.back-home-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: white;
    color: #667eea;
    padding: 10px 20px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 700;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.back-home-btn:hover {
    transform: translateX(5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}


.category-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
    padding: 0 20px;
}

.filter-btn {
    padding: 10px 25px;
    border: none;
    background: white;
    color: #555;
    border-radius: 20px;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background: #ffd700;
    color: #1a1a2e;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(255, 215, 0, 0.3);
}


.books-full-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto 60px;
}

.book-card-full {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
}

.book-card-full:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.book-cover {
    height: 380px;
    position: relative;
    overflow: hidden;
    background: #f9f9f9;
}

.book-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.book-card-full:hover .book-cover img {
    transform: scale(1.1);
}

.book-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.book-card-full:hover .book-overlay {
    opacity: 1;
}

.miki-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, #ffd700, #ff9a00);
    color: #1a1a2e;
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 800;
    z-index: 10;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    border: 2px solid white;
    animation: badge-pop 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes badge-pop {
    from {
        transform: scale(0);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

.read-btn {
    background: #ffd700;
    color: #1a1a2e;
    padding: 12px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 800;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.book-card-full:hover .read-btn {
    transform: translateY(0);
}

.book-details {
    padding: 20px;
    text-align: center;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.book-title-full {
    font-size: 1.2rem;
    color: #2c3e50;
    margin-bottom: 20px;
    line-height: 1.5;
}

.book-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.action-btn {
    flex: 1;
    padding: 10px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.action-btn.read {
    background: #e0f7fa;
    color: #006064;
}

.action-btn.read:hover {
    background: #b2ebf2;
}

.action-btn.download {
    background: #f3e5f5;
    color: #4a148c;
}

.action-btn.download:hover {
    background: #e1bee7;
}


.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    left: 30px;
    
    width: 50px;
    height: 50px;
    background: #667eea;
    color: white;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top-btn:hover {
    transform: translateY(-5px);
    background: #5a67d8;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out forwards;
}