.shelf-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 32px;
}

.shelf-header h1 {
    font-size: 1.4rem;
    color: var(--text-title);
    font-weight: 700;
}

.shelf-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 40px;
    align-items: start;
}

.book-card {
    display: block;
    background-color: var(--bg-card);
    border-radius: 4px;
    overflow: hidden;
    text-decoration: none;
    box-shadow: 0 0px 2px rgba(0, 0, 0, 0.15);
    transition: box-shadow 0.2s ease;
}

.book-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.book-cover {
    width: 100%;
}

.book-info {
    padding: 14px 14px 16px;
}

.book-title {
    font-size: 1rem;
    color: var(--text-title);
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 8px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.book-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.book-tags .tag {
    display: inline-block;
    padding: 1px 8px;
    font-size: 0.75rem;
    color: var(--text-accent);
    background-color: var(--tag-bg);
    border-radius: 3px;
}

.book-status {
    display: inline-block;
    font-size: 0.8rem;
    padding: 2px 8px;
    border-radius: 3px;
}

.status-ongoing {
    color: var(--status-ongoing);
    background-color: var(--status-ongoing-bg);
}

.status-finished {
    color: var(--status-finished);
    background-color: var(--status-finished-bg);
}

.copyright {
    text-align: center;
    padding: 20px 0;
    font-size: 0.8rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
}

@media (max-width: 900px) {
    .shelf-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
}

@media (max-width: 600px) {
    .shelf-header {
        padding: 16px 0;
        margin-bottom: 20px;
    }

    .shelf-header h1 {
        font-size: 1.2rem;
    }

    .shelf-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .book-info {
        padding: 10px 10px 12px;
    }

    .book-title {
        font-size: 0.9rem;
        margin-bottom: 6px;
    }

    .book-tags {
        margin-bottom: 8px;
    }

    .book-status {
        font-size: 0.75rem;
    }
}