body {
    font-family: 'Merriweather', Georgia, serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(180deg, #f9f9f9 0%, #e8ebe8 100%);
    color: #333;
    min-height: 100vh;
    line-height: 1.7;
}

.books-container {
    max-width: 1600px;
    margin: 40px auto;
    padding: 40px 20px;
}

.page-title {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, #6B8E23 0%, #556B2F 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin-bottom: 50px;
    letter-spacing: -1px;
}

.books-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 35px;
    padding: 20px 0;
}

.book-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    position: relative;
    border: 1px solid #e0e0e0;
    width: 100%;
}

.book-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #6B8E23 0%, #556B2F 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.book-card:hover::before {
    opacity: 1;
}

.book-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(107, 142, 35, 0.25);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.book-card-body {
    padding: 30px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.book-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 15px;
    line-height: 1.3;
    min-height: 60px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.book-description {
    font-size: 0.95rem;
    color: #7f8c8d;
    line-height: 1.7;
    margin-bottom: 15px;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.book-author {
    font-size: 0.9rem;
    color: #95a5a6;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.book-author::before {
    content: '\f007';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    color: #6B8E23;
}

.book-price-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
    margin-top: auto;
    padding-top: 20px;
    border-top: 2px solid #f1f3f5;
}

.price-display {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, #6B8E23 0%, #556B2F 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: baseline;
    gap: 5px;
}

.price-display .currency {
    font-size: 1rem;
    color: #7f8c8d;
    font-weight: 600;
}

.read-more-btn {
    background: linear-gradient(135deg, #6B8E23 0%, #556B2F 100%);
    color: #fff;
    padding: 12px 28px;
    text-align: center;
    text-decoration: none;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(107, 142, 35, 0.3);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.read-more-btn::after {
    content: '\f061';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    transition: transform 0.3s ease;
}

.read-more-btn:hover {
    transform: translateX(5px);
    box-shadow: 0 6px 20px rgba(107, 142, 35, 0.4);
}

.read-more-btn:hover::after {
    transform: translateX(5px);
}

/* Free book button style */
.book-card:has(.read-more-btn:contains('Citește acum')) .read-more-btn {
    background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%);
    box-shadow: 0 4px 15px rgba(46, 204, 113, 0.3);
}

.book-card:has(.read-more-btn:contains('Citește acum')) .read-more-btn:hover {
    box-shadow: 0 6px 20px rgba(46, 204, 113, 0.4);
}

/* Scroll-based animation with IntersectionObserver */
.book-card {
    opacity: 0;
    transform: translateY(30px);
}

.book-card.show {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

/* Responsive design */
@media (max-width: 1400px) {
    .books-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 1024px) {
    .books-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
}

@media (max-width: 768px) {
    .books-container {
        padding: 30px 15px;
    }

    .page-title {
        font-size: 2.2rem;
        margin-bottom: 30px;
    }

    .books-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        padding: 20px 10px;
    }

    .book-card-body {
        padding: 25px;
    }

    .book-title {
        font-size: 1.3rem;
        min-height: auto;
    }

    .book-price-info {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .price-display {
        justify-content: center;
        font-size: 1.5rem;
    }

    .read-more-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .page-title {
        font-size: 1.8rem;
    }

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

    .book-card-body {
        padding: 20px;
    }

    .book-description {
        -webkit-line-clamp: 2;
    }
}