.history-section {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dark-color);
}

.section-subtitle {
    color: var(--secondary-color);
    font-size: 1rem;
}

.documents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.document-card {
    background: white;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all 0.3s ease;
}

.document-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.document-card .card-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--light-color);
}

.file-info {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.file-icon i {
    font-size: 2rem;
}

.file-name {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.25rem;
}

.file-meta {
    font-size: 0.875rem;
    color: var(--secondary-color);
}

.status-badge {
    margin-left: auto;
}

.document-card .card-body {
    padding: 1.5rem;
}

.stats-row {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--secondary-color);
}

.changes-preview .changes-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.changes-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.changes-tags .badge {
    font-size: 0.75rem;
}

.card-actions {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--light-color);
}

.action-buttons {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.action-buttons .btn {
    font-size: 0.875rem;
}

.delete-form {
    display: inline;
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: white;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.empty-icon i {
    font-size: 4rem;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
}

.empty-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.75rem;
}

.empty-description {
    color: var(--secondary-color);
    margin-bottom: 2rem;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.pagination-wrapper {
    display: flex;
    justify-content: center;
}

.pagination-wrapper .pagination {
    background: white;
    border-radius: 8px;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    .documents-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .section-header {
        padding: 1.5rem;
    }
    
    .section-header .d-flex {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch !important;
    }
    
    .document-card .card-header,
    .document-card .card-body,
    .card-actions {
        padding: 1rem;
    }
    
    .stats-row {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .action-buttons {
        flex-wrap: wrap;
    }
    
    .action-buttons .btn {
        flex: 1;
        min-width: 80px;
    }
}